8479 lines
258 KiB
C++
8479 lines
258 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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// Dqn.h Usage
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////////////////////////////////////////////////////////////////////////////////
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/*
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#define DQN_IMPLEMENTATION // Enable the implementation
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// Define this wherever you want access to DQN code that uses the platform.
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#define DQN_PLATFORM_HEADER // Enable function prototypes for xplatform/platform code
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// NOTE: For platform code, it's one or the other or you will get compilation problems.
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// Define this in ONE and only ONE file to enable the implementation of platform code.
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// On Win32 you must link against user32.lib
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#define DQN_WIN32_IMPLEMENTATION // Enable Win32 Code, but only if _WIN32 or _WIN64 is already defined. Also requires DQN_IMPLEMENTATION.
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#define DQN_UNIX_IMPLEMENTATION // Enable Unix Code, but only if __linux__ is already defined. Also requires DQN_IMPLEMENTATION.
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#define DQN_MAKE_STATIC // Make all functions be static
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#include "dqn.h"
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*/
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// Conventions
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// All data structures fields are exposed by default, with exceptions here and there. The rationale
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// is I rarely go into libraries and start changing values around in fields unless I know the
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// implementation OR we're required to fill out a struct for some function.
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// Just treat all struct fields to be internal and read-only unless explicitly stated otherwise.
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////////////////////////////////////////////////////////////////////////////////
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// Table Of Contents #TOC #TableOfContents
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////////////////////////////////////////////////////////////////////////////////
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// You can search by #<entry> to jump straight to the section.
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// The first match is the public API, the next matche(s) are the implementation
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// #Portable Code
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// #DqnAssert Assertions
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// #DqnMem Memory Allocation
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// #DqnMemAPI Custom memory API for Dqn Data Structures
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// #DqnMemStack Memory Allocator, Push, Pop Style
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// #DqnString String library
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// #DqnArray Dynamic Array using Templates
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// #DqnHash Hashing using Murmur
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// #DqnHashTable Hash Tables using Templates
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// #DqnMath Simple Math Helpers (Lerp etc.)
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// #DqnV2 2D Math Vectors
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// #DqnV3 3D Math Vectors
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// #DqnV4 4D Math Vectors
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// #DqnMat4 4x4 Math Matrix
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// #DqnRect Rectangles
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// #DqnChar Char Operations (IsDigit(), IsAlpha() etc)
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// #DqnStr Str Operations (Str_Len(), Str_Copy() etc)
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// #DqnWChar WChar Operations (IsDigit(), IsAlpha() etc)
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// #DqnRnd Random Number Generator (ints and floats)
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// #Dqn_* Utility code, (qsort, quick file reading)
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// #XPlatform (Win32 & Unix)
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// #DqnFile File I/O (Read, Write, Delete)
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// #DqnTimer High Resolution Timer
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// #DqnLock Mutex Synchronisation
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// #DqnJobQueue Multithreaded Job Queue
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// #DqnAtomic Interlocks/Atomic Operations
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// #DqnPlatform Common Platform API helpers
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// #Platform
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// - #Win32Platform
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// - #DqnWin32 Common Win32 API Helpers
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// #External Code
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// #DqnIni Simple INI Config File API (Public Domain lib by Mattias Gustavsson)
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// #DqnSprintf Cross-platform Sprintf Implementation (Public Domain lib stb_sprintf)
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// TODO
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// - Memory debugging
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// - Total allocated memory vs freed memory to track leaked allocations
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//
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// - QuickSort version for classes that implement a less than operator
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//
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// - DqnMemStack
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// - Allow 0 size memblock stack initialisation/block-less stack for situations where you don't
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// care about specifying a size upfront
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// - Default block size for when new blocks are required
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//
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// - Win32
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// - Get rid of reliance on MAX_PATH
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//
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// - Make lib compile and run on Linux with GCC using -03
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// - Make DqnV* operations be static to class for consistency?
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////////////////////////////////////////////////////////////////////////////////
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// Preprocessor Checks
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////////////////////////////////////////////////////////////////////////////////
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// This needs to be above the portable layer so that, if the user requests
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// a platform implementation, platform specific implementations in the portable
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// layer will get activated.
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#if (defined(_WIN32) || defined(_WIN64))
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#define DQN_IS_WIN32 1
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#elif defined(__linux__)
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#define DQN_IS_UNIX 1
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#endif
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#if defined(DQN_IS_WIN32) && defined(DQN_WIN32_IMPLEMENTATION)
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#define DQN_XPLATFORM_LAYER 1
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#define DQN_WIN32_PLATFORM 1
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#elif defined(DQN_IS_UNIX) && defined(DQN_UNIX_IMPLEMENTATION)
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#define DQN_XPLATFORM_LAYER 1
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#define DQN_UNIX_PLATFORM 1
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#endif
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////////////////////////////////////////////////////////////////////////////////
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// #Portable Code
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////////////////////////////////////////////////////////////////////////////////
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#ifndef DQN_H
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#define DQN_H
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#ifdef DQN_MAKE_STATIC
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#define DQN_FILE_SCOPE static
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#else
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#define DQN_FILE_SCOPE
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#endif
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#include <stdint.h> // For standard types
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#include <stddef.h> // For standard types
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#include <string.h> // memmove
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#include <float.h>
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#define LOCAL_PERSIST static
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#define FILE_SCOPE static
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typedef uint64_t u64;
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typedef uint32_t u32;
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typedef uint16_t u16;
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typedef uint8_t u8;
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typedef int64_t i64;
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typedef int32_t i32;
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typedef int16_t i16;
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typedef int8_t i8;
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typedef double f64;
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typedef float f32;
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#define DQN_F32_MIN -FLT_MAX
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#define DQN_TERABYTE(val) (DQN_GIGABYTE(val) * 1024LL)
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#define DQN_GIGABYTE(val) (DQN_MEGABYTE(val) * 1024LL)
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#define DQN_MEGABYTE(val) (DQN_KILOBYTE(val) * 1024LL)
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#define DQN_KILOBYTE(val) ((val) * 1024LL)
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#define DQN_ALIGN_POW_N(val, align) ((((size_t)val) + ((size_t)align-1)) & (~(size_t)(align-1)))
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#define DQN_ALIGN_POW_4(val) DQN_ALIGN_POW_N(val, 4)
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#define DQN_INVALID_CODE_PATH 0
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#define DQN_ARRAY_COUNT(array) (sizeof(array) / sizeof(array[0]))
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#define DQN_PI 3.14159265359f
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#define DQN_SQUARED(x) ((x) * (x))
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#define DQN_ABS(x) (((x) < 0) ? (-(x)) : (x))
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#define DQN_DEGREES_TO_RADIANS(x) ((x * (DQN_PI / 180.0f)))
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#define DQN_RADIANS_TO_DEGREES(x) ((x * (180.0f / DQN_PI)))
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#define DQN_MAX(a, b) ((a) < (b) ? (b) : (a))
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#define DQN_MIN(a, b) ((a) < (b) ? (a) : (b))
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#define DQN_SWAP(type, a, b) do { type tmp = a; a = b; b = tmp; } while(0)
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////////////////////////////////////////////////////////////////////////////////
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// #DqnAssert Public API - Assertions
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////////////////////////////////////////////////////////////////////////////////
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// DQN_ASSERT() & DQN_ASSERT_MSG() will hard break the program but it can be
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// disabled in DqnAssertInternal() for release whilst still allowing the assert
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// expressions to be evaluated and instead send diagnostics to console.
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// NOTE: "## __VA_ARGS__" is a GCC hack. Zero variadic arguments won't compile
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// because there will be a trailing ',' at the end. Pasting it swallows it. MSVC
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// implicitly swallows the trailing comma.
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// returns: If the expr was true or not.
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#define DQN_ASSERT(expr) DqnAssertInternal(expr, __FILE__, __LINE__, #expr, nullptr)
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#define DQN_ASSERT_MSG(expr, msg, ...) DqnAssertInternal(expr, __FILE__, __LINE__, #expr, msg, ## __VA_ARGS__)
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// Usage example. This protects code against asserts that should fire in release
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// mode by still letting the expression evaluate and the ability to redirect
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// the code flow to some recovery path.
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#if 0
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int *mem = (int *)malloc(sizeof(*mem));
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if (DQN_ASSERT_MSG(mem, "Not enough memory for malloc")) {
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// success
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} else {
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// failed
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}
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#endif
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// Internal implementation should not be used as the macro above will handle it, but is required in
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// header for visibility to external functions calling it.
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// returns: If the expr was true or not.
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DQN_FILE_SCOPE bool DqnAssertInternal(const bool result, const char *const file, const i32 lineNum,
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const char *const expr, const char *const msg, ...);
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// Hard assert causes an immediate program break at point of assertion by trying
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// to modify the 0th mem-address.
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#define DQN_ASSERT_HARD(expr) if (!(expr)) { *((int *)0) = 0; }
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// Assert at compile time by making a type that is invalid depending on the expression result
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#define DQN_COMPILE_ASSERT(expr) DQN_COMPILE_ASSERT_INTERNAL(expr, __COUNTER__)
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#define DQN_COMPILE_ASSERT_INTERNAL(expr, guid) typedef char DqnCompileAssertInternal_##guid[((int)(expr)) * 2 - 1];
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////////////////////////////////////////////////////////////////////////////////
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// #DqnMem Public API - Memory Allocation
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////////////////////////////////////////////////////////////////////////////////
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// TODO(doyle): Use platform allocation, fallback to malloc if platform not defined
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DQN_FILE_SCOPE void *DqnMem_Alloc (const size_t size);
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DQN_FILE_SCOPE void *DqnMem_Calloc (const size_t size);
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DQN_FILE_SCOPE void DqnMem_Clear (void *const memory, const u8 clearValue, const size_t size);
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DQN_FILE_SCOPE void *DqnMem_Realloc(void *memory, const size_t newSize);
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DQN_FILE_SCOPE void DqnMem_Free (void *memory);
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DQN_FILE_SCOPE void DqnMem_Copy (u8 *const dest, u8 *const src, const i64 numBytesToCopy);
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////////////////////////////////////////////////////////////////////////////////
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// #DqnMemAPI Public API - Custom memory API for Dqn Data Structures
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////////////////////////////////////////////////////////////////////////////////
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// You only need to care about this API if you want to use custom mem-alloc routines in the data
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// structures! Otherwise it already has a default one to use.
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// How To Use:
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// 1. Implement the allocator function, where DqnMemAPI::Request will tell you the request.
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// - (NOTE) The callback should return the resulting data into DqnMemAPI::Result
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// 2. Create a DqnMemAPI struct with a function ptr to your allocator
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// - (OPTIONAL) Set the user context to your book-keeping/mem allocating service
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// 3. Initialise any data structure that supports a DqnMemAPI with your struct.
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// That's it! Done :) Of course, changing memAPI's after initialisation is invalid since the
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// pointers belonging to your old routine may not be tracked in your new memAPI. So you're at your
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// own discretion there.
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class DqnMemAPI
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{
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public:
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enum Type
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{
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Invalid,
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Alloc,
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Calloc,
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Realloc,
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Free
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};
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struct Request
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{
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void *userContext;
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Type type;
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union {
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// DqnMemAPI::Type::Alloc / DqnMemAPI::Type::Calloc
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struct
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{
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bool clearToZero;
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size_t requestSize;
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};
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// DqnMemAPI::Type::Free
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struct
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{
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void *ptrToFree;
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size_t sizeToFree;
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};
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// DqnMemAPI::Type::Realloc
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struct
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{
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size_t newRequestSize;
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void *oldMemPtr;
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size_t oldSize;
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};
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};
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};
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static Request RequestRealloc(const DqnMemAPI memAPI, void *const oldMemPtr, const size_t oldSize, const size_t newSize);
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static Request RequestAlloc (const DqnMemAPI memAPI, const size_t size, const bool clearToZero);
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static Request RequestFree (const DqnMemAPI memAPI, void *const ptrToFree, const size_t sizeToFree);
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typedef u8 *Allocator(DqnMemAPI::Request request);
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Allocator *callback;
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void *userContext;
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};
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DQN_FILE_SCOPE DqnMemAPI DqnMemAPI_HeapAllocator ();
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DQN_FILE_SCOPE DqnMemAPI DqnMemAPI_StackAllocator(struct DqnMemStack *const stack);
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////////////////////////////////////////////////////////////////////////////////
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// #DqnMemStack Public API - Memory Allocator, Push, Pop Style
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////////////////////////////////////////////////////////////////////////////////
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// DqnMemStack is an memory allocator in a stack like, push-pop style. It pre-allocates a block of
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// memory at init and sub-allocates from this block to take advantage of memory locality.
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// When an allocation requires a larger amount of memory than available in the block then the
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// MemStack will allocate a new block of sufficient size for you in DqnMemStack_Push(..). This DOES
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// mean that there will be wasted spaceat the end of each block and is a tradeoff for memory
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// locality against optimal space usage.
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// How To Use:
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// 1. Create a DqnMemStack struct and pass it into an initialisation function
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// - InitWithFixedMem() allows you to pass in your own memory which is
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// converted to a memory block. This disables dynamic allocation.
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// NOTE: Space is reserved in the given memory for MemStackBlock metadata.
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// - InitWithFixedSize() allows you to to disable dynamic allocations and
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// sub-allocate from the initial MemStack allocation size only.
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// 2. Use DqnMemStack_Push(..) to allocate memory for use.
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// - "Freeing" memory is dealt by creating temporary MemStacks or using the
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// BeginTempRegion and EndTempRegion functions. Specifically freeing
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// individual items is typically not generalisable in this scheme.
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struct DqnMemStack
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{
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enum Flag
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{
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IsNotExpandable = (1 << 0),
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// NOTE(doyle): Required to indicate we CAN'T free this memory when free is called.
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IsFixedMemoryFromUser = (1 << 1),
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};
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// Blocks are freely modifiable if you want fine grained control. Size value and memory ptr should
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// NOT be modified directly, only indirectly through the regular API.
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struct Block
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{
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// The raw memory block, size and used count
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u8 *memory;
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size_t size;
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size_t used;
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// The allocator uses a linked list approach for additional blocks beyond capacity
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Block *prevBlock;
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};
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DqnMemAPI memAPI; // Allocation scheme
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Block *block; // The memory block allocated for the stack
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u32 flags; // Bits set from enum Flag
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i32 tempRegionCount;
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// Allocations are address aligned to this value. Not modifiable as popping uses this to realign ptrs
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u32 byteAlign;
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// -- Initialisation API
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// Uses fixed memory given by user. All allocations from the MemStack will be suballocated from the
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// given memory. Allocations fail after the MemStack becomes full.
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// stack: Pass in a pointer to a zero cleared DqnMemStack struct.
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// mem: Memory to use for the memory stack
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// byteAlign: Set the alignment of memory addresses for all allocated items from the memory stack.
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// return: FALSE if args are invalid, or insufficient memSize.
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bool InitWithFixedMem(u8 *const mem, const size_t memSize, const u32 byteAlign_ = 4);
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// The memory stack uses 1 initial allocation from the DqnMem_Alloc(). No further allocations are
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// made. All allocations are suballocated from the first allocation.
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// size: The amount of memory to allocate. Size gets aligned to the next "byteAlign"ed value.
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bool InitWithFixedSize(const size_t size, const bool zeroClear, const u32 byteAlign_ = 4, const DqnMemAPI memAPI_ = DqnMemAPI_HeapAllocator());
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// Dynamically expandable stack. Akin to DqnMemStack_InitWithFixedSize() except if the MemStack does
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// not have enough space for allocation it will automatically attach another MemBlock using
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// DqnMem_Calloc().
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bool Init(const size_t size, const bool zeroClear, const u32 byteAlign_ = 4, const DqnMemAPI memAPI_ = DqnMemAPI_HeapAllocator());
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// -- Memory API
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// Allocate memory from the MemStack.
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// size: "size" gets aligned to the byte alignment of the stack.
|
||
// return: nullptr if out of space OR stack is using fixed memory/size OR stack full and platform malloc fails.
|
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void *Push(size_t size);
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// Frees the given ptr. It MUST be the last allocated item in the stack, fails otherwise.
|
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bool Pop (void *const ptr, size_t size);
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|
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// Frees all blocks belonging to this stack.
|
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void Free();
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|
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// Frees the specified block belonging to the stack.
|
||
// return: FALSE if block doesn't belong this into calls DqnMem_Free() or invalid args.
|
||
bool FreeMemBlock(Block *memBlock);
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|
||
// Frees the last-most memory block. If last block, free that block making the MemStack blockless.
|
||
// Next allocate will attach a block.
|
||
bool FreeLastBlock();
|
||
|
||
// Reset the current memory block usage to 0.
|
||
void ClearCurrBlock(const bool zeroClear);
|
||
|
||
// -- Temporary Regions API
|
||
// region: Takes pointer to a zero-cleared DqnMemStackTempRegion struct.
|
||
// return: FALSE if arguments are invalid.
|
||
struct DqnMemStackTempRegion TempRegionBegin();
|
||
void TempRegionEnd (DqnMemStackTempRegion region);
|
||
|
||
// -- Scoped Temporary Regions API
|
||
struct DqnMemStackTempRegionGuard TempRegionGuard();
|
||
|
||
// -- Advanced API
|
||
// These are useful for forcing a new block to be used. AllocateCompatibleBlock() will fail if the
|
||
// supplied stack has flags set such that the stack is not allowed to have new blocks.
|
||
Block *AllocateCompatibleBlock(size_t size, const bool zeroClear);
|
||
bool AttachBlock (Block *const newBlock);
|
||
bool DetachBlock (Block *const detachBlock);
|
||
|
||
// (IMPORTANT) Should only be used to free blocks that haven't been attached! Attached blocks should
|
||
// be freed using DqnMemStack_FreeMemBlock().
|
||
void FreeDetachedBlock (Block *memBlock);
|
||
};
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// DqnMemStack Temporary Regions
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// Lets the programmer mark a begin/end region in which all the memory allocated from the MemStack
|
||
// will be reverted upon reaching the DqnMemStackTempRegion_End() call. This includes the reverting
|
||
// of additional MemBlocks allocated in a dynamic stack and all other various MemStack configs.
|
||
|
||
// TODO(doyle): Look into a way of "preventing/guarding" against anual calls to free/clear in temp
|
||
// regions
|
||
typedef struct DqnMemStackTempRegion
|
||
{
|
||
// The stack associated with this TempRegion
|
||
DqnMemStack *stack;
|
||
|
||
// Store memBlock state to revert back to on DqnMemStackTempRegion_End()
|
||
DqnMemStack::Block *startingBlock;
|
||
size_t used;
|
||
} DqnMemStackTempRegion;
|
||
|
||
// Region guard automatically starts a region on construction and ends a region on destruction.
|
||
struct DqnMemStackTempRegionGuard
|
||
{
|
||
// stack: Takes a pointer to a pre-existing and already initialised stack
|
||
DqnMemStackTempRegionGuard(DqnMemStack *const stack);
|
||
~DqnMemStackTempRegionGuard();
|
||
|
||
private:
|
||
DqnMemStackTempRegion memRegion;
|
||
};
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// #DqnString Public API - String library
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// String allocates +1 extra byte for the null-terminator to be completely compatible with
|
||
// C style strings, but this is not reflected in the capacity or len, and is hidden from the user.
|
||
|
||
#define DQN_STRING_LITERAL(dqnstring, literal) \
|
||
{}; \
|
||
char dqnstring##_[] = literal; \
|
||
dqnstring.InitLiteralNoAlloc(dqnstring##_, DQN_ARRAY_COUNT(dqnstring##_) - 1);
|
||
|
||
struct DqnString
|
||
{
|
||
char *str;
|
||
i32 len; // Len of the string in bytes not including null-terminator
|
||
i32 max; // The maximum capacity not including space for null-terminator.
|
||
DqnMemAPI memAPI;
|
||
|
||
bool InitSize (const i32 size, const DqnMemAPI api = DqnMemAPI_HeapAllocator());
|
||
bool InitFixedMem(char *const memory, const i32 sizeInBytes);
|
||
bool InitLiteral (const char *const cstr, const DqnMemAPI api = DqnMemAPI_HeapAllocator());
|
||
bool InitWLiteral(const wchar_t *const cstr, const DqnMemAPI api = DqnMemAPI_HeapAllocator());
|
||
|
||
bool InitLiteralNoAlloc(char *const cstr, i32 cstrLen = -1);
|
||
|
||
bool Expand(const i32 newMax);
|
||
|
||
bool AppendStr (const DqnString strToAppend, i32 bytesToCopy = -1);
|
||
bool AppendCStr(const char *const cstr, i32 bytesToCopy = -1);
|
||
void Clear();
|
||
void Free();
|
||
|
||
// The function automatically null-terminates the output string.
|
||
// bufSize: The size of the buffer in wchar_t characters.
|
||
// return: -1 if invalid, or if bufSize is 0 the required buffer length in wchar_t characters
|
||
i32 ToWCharUseBuf(wchar_t *const buf, const i32 bufSize);
|
||
|
||
// returns a malloc() string, needs to be freed using free(..);
|
||
wchar_t *ToWChar(DqnMemAPI api = DqnMemAPI_HeapAllocator());
|
||
};
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// #DqnArray Public API - CPP Dynamic Array with Templates
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
#define DQN_FOR_ARRAY(indexName, arrayPtr) \
|
||
for (auto indexName = 0; indexName < (arrayPtr)->count; indexName++)
|
||
|
||
template <typename T>
|
||
struct DqnArray
|
||
{
|
||
// Function pointers to custom allocators
|
||
DqnMemAPI memAPI;
|
||
|
||
// Array state
|
||
i64 count;
|
||
i64 max;
|
||
T *data;
|
||
|
||
// API
|
||
bool Init (const i64 size, DqnMemAPI api = DqnMemAPI_HeapAllocator());
|
||
bool Free ();
|
||
bool Resize (const i64 newMax);
|
||
bool Grow ();
|
||
T *Push (const T *item, const i64 num);
|
||
T *Push (const T item);
|
||
void Pop ();
|
||
T *Get (const i64 index);
|
||
void Clear (const bool clearMemory = false);
|
||
bool Remove (const i64 index);
|
||
bool RemoveStable(const i64 index);
|
||
void RemoveStable(i64 *indexList, const i64 numIndexes);
|
||
};
|
||
|
||
template <typename T>
|
||
bool DqnArray<T>::Init(const i64 size, const DqnMemAPI api = DqnMemAPI_HeapAllocator())
|
||
{
|
||
DQN_ASSERT_HARD(size >= 0);
|
||
|
||
if (size > 0)
|
||
{
|
||
i64 allocateSize = size * sizeof(T);
|
||
DqnMemAPI::Request info = DqnMemAPI::RequestAlloc(api, allocateSize, /*zeroClear*/ false);
|
||
this->data = (T *)api.callback(info);
|
||
if (!this->data) return false;
|
||
}
|
||
|
||
this->memAPI = api;
|
||
this->count = 0;
|
||
this->max = size;
|
||
return true;
|
||
}
|
||
|
||
// Implementation taken from Milton, developed by Serge at
|
||
// https://github.com/serge-rgb/milton#license
|
||
template <typename T>
|
||
bool DqnArray<T>::Free()
|
||
{
|
||
if (this->data)
|
||
{
|
||
// TODO(doyle): Right now we assume free always works, and it probably should?
|
||
i64 sizeToFree = this->max * sizeof(T);
|
||
DqnMemAPI::Request info =
|
||
DqnMemAPI::RequestFree(this->memAPI, this->data, sizeToFree);
|
||
this->memAPI.callback(info);
|
||
this->data = nullptr;
|
||
|
||
this->count = 0;
|
||
this->max = 0;
|
||
return true;
|
||
}
|
||
|
||
return false;
|
||
}
|
||
|
||
template <typename T>
|
||
bool DqnArray<T>::Resize(i64 newMax)
|
||
{
|
||
if (!this->data) return false;
|
||
if (!this->memAPI.callback) return false;
|
||
|
||
i64 oldSize = this->max * sizeof(T);
|
||
i64 newSize = newMax * sizeof(T);
|
||
|
||
DqnMemAPI::Request info =
|
||
DqnMemAPI::RequestRealloc(this->memAPI, this->data, oldSize, newSize);
|
||
u8 *result = this->memAPI.callback(info);
|
||
if (result)
|
||
{
|
||
this->data = (T *)result;
|
||
this->max = newMax;
|
||
return true;
|
||
}
|
||
else
|
||
{
|
||
return false;
|
||
}
|
||
}
|
||
|
||
template <typename T>
|
||
bool DqnArray<T>::Grow()
|
||
{
|
||
if (!this->data) return false;
|
||
|
||
const f32 GROWTH_FACTOR = 2.0f;
|
||
i64 newMax = (i64)(this->max * GROWTH_FACTOR);
|
||
if (newMax == this->max) newMax++;
|
||
|
||
bool result = this->Resize(newMax);
|
||
return result;
|
||
}
|
||
|
||
template <typename T>
|
||
T *DqnArray<T>::Push(const T *item, const i64 num)
|
||
{
|
||
i64 newSize = this->count + num;
|
||
if (!this->data || newSize > this->max)
|
||
{
|
||
if (!this->Grow()) return nullptr;
|
||
}
|
||
|
||
DQN_ASSERT(this->count < this->max);
|
||
for (auto i = 0; i < num; i++)
|
||
{
|
||
this->data[this->count++] = item[i];
|
||
}
|
||
|
||
return &this->data[this->count-1];
|
||
}
|
||
|
||
template <typename T>
|
||
T *DqnArray<T>::Push(const T item)
|
||
{
|
||
T* result = this->Push(&item, 1);
|
||
return result;
|
||
}
|
||
|
||
template <typename T>
|
||
void DqnArray<T>::Pop()
|
||
{
|
||
if (this->count == 0) return;
|
||
this->count--;
|
||
}
|
||
|
||
template <typename T>
|
||
T *DqnArray<T>::Get(const i64 index)
|
||
{
|
||
T *result = nullptr;
|
||
if (index >= 0 && index <= this->count) result = &this->data[index];
|
||
return result;
|
||
}
|
||
|
||
template <typename T>
|
||
void DqnArray<T>::Clear(bool clearMemory)
|
||
{
|
||
this->count = 0;
|
||
if (clearMemory)
|
||
{
|
||
i64 sizeToClear = sizeof(T) * this->count;
|
||
DqnMem_Clear(this->data, 0, sizeToClear);
|
||
}
|
||
}
|
||
|
||
template <typename T>
|
||
bool DqnArray<T>::Remove(const i64 index)
|
||
{
|
||
if (index >= this->count) return false;
|
||
|
||
bool firstElementAndOnlyElement = (index == 0 && this->count == 1);
|
||
bool isLastElement = (index == (this->count - 1));
|
||
if (firstElementAndOnlyElement || isLastElement)
|
||
{
|
||
this->count--;
|
||
return true;
|
||
}
|
||
|
||
this->data[index] = this->data[this->count - 1];
|
||
this->count--;
|
||
return true;
|
||
}
|
||
|
||
template <typename T>
|
||
bool DqnArray<T>::RemoveStable(const i64 index)
|
||
{
|
||
if (index >= this->count) return false;
|
||
|
||
bool firstElementAndOnlyElement = (index == 0 && this->count == 1);
|
||
bool isLastElement = (index == (this->count - 1));
|
||
if (firstElementAndOnlyElement || isLastElement)
|
||
{
|
||
this->count--;
|
||
return true;
|
||
}
|
||
|
||
i64 itemToRemoveByteOffset = index * sizeof(T);
|
||
i64 oneAfterItemToRemoveByteOffset = (index + 1) * sizeof(T);
|
||
i64 lastItemByteOffset = this->count * sizeof(T);
|
||
i64 numBytesToMove = lastItemByteOffset - oneAfterItemToRemoveByteOffset;
|
||
|
||
u8 *bytePtr = (u8 *)this->data;
|
||
u8 *dest = &bytePtr[itemToRemoveByteOffset];
|
||
u8 *src = &bytePtr[oneAfterItemToRemoveByteOffset];
|
||
memmove(dest, src, numBytesToMove);
|
||
|
||
this->count--;
|
||
return true;
|
||
}
|
||
|
||
template <typename T>
|
||
void DqnArray<T>::RemoveStable(i64 *indexList, const i64 numIndexes)
|
||
{
|
||
if (numIndexes == 0 || !indexList) return;
|
||
|
||
// NOTE: Sort the index list and ensure we only remove indexes up to the size of our array
|
||
Dqn_QuickSort<i64>(indexList, numIndexes);
|
||
|
||
i64 arrayHighestIndex = this->count - 1;
|
||
i64 realCount = numIndexes;
|
||
if (indexList[numIndexes - 1] > arrayHighestIndex)
|
||
{
|
||
i64 realNumIndexes = Dqn_BinarySearch<i64>(indexList, numIndexes, arrayHighestIndex,
|
||
Dqn_BinarySearchBound_Lower);
|
||
// NOTE: If -1, then there's no index in the indexlist that is within the range of our array
|
||
// i.e. no index we can remove without out of array bounds access
|
||
if (realNumIndexes == -1)
|
||
return;
|
||
|
||
if (indexList[realNumIndexes] == arrayHighestIndex)
|
||
{
|
||
realCount = realNumIndexes++;
|
||
}
|
||
else
|
||
{
|
||
realCount = realNumIndexes += 2;
|
||
}
|
||
realCount = DQN_MIN(numIndexes, realCount);
|
||
}
|
||
|
||
if (realCount == 1)
|
||
{
|
||
this->RemoveStable(indexList[0]);
|
||
}
|
||
else
|
||
{
|
||
i64 indexListIndex = 0;
|
||
i64 indexToCopyTo = indexList[indexListIndex++];
|
||
i64 indexToCopyFrom = indexToCopyTo + 1;
|
||
i64 deadIndex = indexList[indexListIndex++];
|
||
|
||
bool breakLoop = false;
|
||
for (;
|
||
indexToCopyFrom < this->count;
|
||
indexToCopyTo++, indexToCopyFrom++)
|
||
{
|
||
while (indexToCopyFrom == deadIndex)
|
||
{
|
||
deadIndex = indexList[indexListIndex++];
|
||
indexToCopyFrom++;
|
||
|
||
breakLoop |= (indexToCopyFrom >= this->count);
|
||
breakLoop |= (indexListIndex > realCount);
|
||
if (breakLoop) break;
|
||
}
|
||
if (breakLoop) break;
|
||
|
||
this->data[indexToCopyTo] = this->data[indexToCopyFrom];
|
||
}
|
||
|
||
for (; indexToCopyFrom < this->count; indexToCopyTo++, indexToCopyFrom++)
|
||
{
|
||
this->data[indexToCopyTo] = this->data[indexToCopyFrom];
|
||
}
|
||
|
||
this->count -= realCount;
|
||
DQN_ASSERT(this->count >= 0);
|
||
}
|
||
}
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// #DqnHash Public API
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
DQN_FILE_SCOPE u32 DqnHash_Murmur32Seed(void const *data, size_t len, u32 seed);
|
||
DQN_FILE_SCOPE u64 DqnHash_Murmur64Seed(void const *data_, size_t len, u64 seed);
|
||
|
||
DQN_FILE_SCOPE inline u32 DqnHash_Murmur32(void const *data, size_t len)
|
||
{
|
||
return DqnHash_Murmur32Seed(data, len, 0x9747b28c);
|
||
}
|
||
|
||
DQN_FILE_SCOPE inline u64 DqnHash_Murmur64(void const *data, size_t len)
|
||
{
|
||
return DqnHash_Murmur64Seed(data, len, 0x9747b28c);
|
||
}
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// #DqnHashTable Public API - Hash Tables using Templates
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
template <typename T>
|
||
struct DqnHashTable
|
||
{
|
||
struct Entry
|
||
{
|
||
DqnString key;
|
||
T data;
|
||
Entry *next;
|
||
};
|
||
|
||
DqnMemAPI memAPI;
|
||
|
||
Entry **entries;
|
||
i64 numEntries;
|
||
|
||
Entry *freeList; // Entries which are allocated and can be reused are stored here.
|
||
i64 numFreeEntries;
|
||
|
||
i64 *usedEntries; // Tracks the indexes used in the entries.
|
||
i64 usedEntriesIndex;
|
||
|
||
bool Init(const i64 numTableEntries = 1024, const DqnMemAPI api = DqnMemAPI_HeapAllocator());
|
||
|
||
// keyLen: Len of string not including null-terminator, if -1, utf8 strlen will be used to determine length.
|
||
// return: Pre-existing entry if it exists, otherwise a nullptr.
|
||
Entry *Get(DqnString key);
|
||
Entry *Get(const char *const key, i32 keyLen = -1);
|
||
|
||
// keyLen: Len of string not including null-terminator, if -1, utf8 strlen will be used to determine length.
|
||
// entryAlreadyExisted: Pass in a bool that indicates true if a new entry was created, or false
|
||
// if the entry already existed.
|
||
// return: Pre-existing entry if it exists, otherwise create a new entry suitable for key.
|
||
// nullptr if out of memory.
|
||
Entry *Make(DqnString key, bool *entryAlreadyExisted = nullptr);
|
||
Entry *Make(const char *const key, i32 keyLen = -1, bool *entryAlreadyExisted = nullptr);
|
||
|
||
// keyLen: Len of string not including null-terminator, if -1, utf8 strlen will be used to determine length.
|
||
void Remove(DqnString key);
|
||
void Remove(const char *const key, i32 keyLen = -1);
|
||
|
||
void Free ();
|
||
|
||
// num: If num is positive, allocate num entries to free list.
|
||
// If num is negative, remove num entries from free list.
|
||
bool AddNewEntriesToFreeList(i64 num);
|
||
|
||
// newNumEntries: If different from numEntries, reallocate the table and rehash all entries in the table.
|
||
bool ChangeNumEntries(i64 newNumEntries);
|
||
};
|
||
|
||
template <typename T>
|
||
bool DqnHashTable<T>::Init(const i64 numTableEntries, const DqnMemAPI api = DqnMemAPI_HeapAllocator())
|
||
{
|
||
size_t arrayOfPtrsSize = sizeof(*this->entries) * numTableEntries;
|
||
DqnMemAPI::Request arrayOfPtrsInfo = DqnMemAPI::RequestAlloc(api, arrayOfPtrsSize);
|
||
u8 *arrayOfPtrs = api.callback(arrayOfPtrsInfo);
|
||
if (!arrayOfPtrs) return false;
|
||
|
||
size_t usedEntriesSize = sizeof(*this->usedEntries) * numTableEntries;
|
||
DqnMemAPI::Request usedEntriesInfo = DqnMemAPI::RequestAlloc(api, usedEntriesSize);
|
||
u8 *usedEntriesPtr = api.callback(usedEntriesInfo);
|
||
if (!usedEntriesPtr)
|
||
{
|
||
DqnMemAPI::Request freeInfo =
|
||
DqnMemAPI::RequestFree(api, arrayOfPtrs, arrayOfPtrsSize);
|
||
api.callback(freeInfo);
|
||
return false;
|
||
}
|
||
|
||
this->memAPI = api;
|
||
this->entries = (Entry **)arrayOfPtrs;
|
||
this->numEntries = numTableEntries;
|
||
this->freeList = nullptr;
|
||
this->numFreeEntries = 0;
|
||
this->usedEntries = (i64 *)usedEntriesPtr;
|
||
this->usedEntriesIndex = 0;
|
||
|
||
return true;
|
||
}
|
||
|
||
template <typename T>
|
||
typename DqnHashTable<T>::Entry *DqnHashTableInternal_AllocateEntry(DqnHashTable<T> *table)
|
||
{
|
||
DqnMemAPI::Request info =
|
||
DqnMemAPI::RequestAlloc(table->memAPI, sizeof(DqnHashTable<T>::Entry));
|
||
auto *result = (DqnHashTable<T>::Entry *)table->memAPI.callback(info);
|
||
|
||
if (!result->key.InitSize(0, table->memAPI))
|
||
{
|
||
DQN_ASSERT_MSG(DQN_INVALID_CODE_PATH, "Out of memory error");
|
||
DqnMemAPI::RequestFree(table->memAPI, result, sizeof(DqnHashTable<T>::Entry));
|
||
return nullptr;
|
||
}
|
||
|
||
return result;
|
||
}
|
||
|
||
template <typename T>
|
||
FILE_SCOPE typename DqnHashTable<T>::Entry *
|
||
DqnHashTableInternal_GetFreeEntry(DqnHashTable<T> *table)
|
||
{
|
||
DqnHashTable<T>::Entry *result = {};
|
||
if (table->freeList)
|
||
{
|
||
result = table->freeList;
|
||
table->freeList = table->freeList->next;
|
||
table->numFreeEntries--;
|
||
}
|
||
else
|
||
{
|
||
DQN_ASSERT(table->numFreeEntries == 0);
|
||
result = DqnHashTableInternal_AllocateEntry(table);
|
||
}
|
||
|
||
return result;
|
||
}
|
||
|
||
template <typename T>
|
||
FILE_SCOPE inline i64 DqnHashTableInternal_GetHashIndex(DqnHashTable<T> *table,
|
||
const char *const key, i32 keyLen)
|
||
{
|
||
u64 hash = DqnHash_Murmur64(key, keyLen);
|
||
i64 hashIndex = hash % table->numEntries;
|
||
return hashIndex;
|
||
}
|
||
|
||
FILE_SCOPE inline i64 DqnHashTableInternal_GetHashIndex(i64 numEntries, const char *const key,
|
||
i32 keyLen)
|
||
{
|
||
u64 hash = DqnHash_Murmur64(key, keyLen);
|
||
i64 hashIndex = hash % numEntries;
|
||
return hashIndex;
|
||
}
|
||
|
||
template <typename T>
|
||
typename DqnHashTable<T>::Entry *
|
||
DqnHashTableInternal_FindMatchingKey(typename DqnHashTable<T>::Entry *entry, const char *const key,
|
||
i32 keyLen,
|
||
typename DqnHashTable<T>::Entry **prevEntry = nullptr)
|
||
{
|
||
for (;;)
|
||
{
|
||
if (entry->key.len == keyLen && DqnStr_Cmp(entry->key.str, key) == 0)
|
||
{
|
||
return entry;
|
||
}
|
||
|
||
if (entry->next == nullptr) break;
|
||
if (prevEntry) *prevEntry = entry;
|
||
|
||
entry = entry->next;
|
||
}
|
||
|
||
return nullptr;
|
||
}
|
||
|
||
template <typename T>
|
||
DQN_FILE_SCOPE inline typename DqnHashTable<T>::Entry *
|
||
DqnHashTableInternal_Get(DqnHashTable<T> *table, const char *const key, i32 keyLen, i64 hashIndex)
|
||
{
|
||
DqnHashTable<T>::Entry *entry = table->entries[hashIndex];
|
||
if (entry)
|
||
{
|
||
DqnHashTable<T>::Entry *matchingEntry = DqnHashTableInternal_FindMatchingKey<T>(entry, key, (i64)keyLen);
|
||
if (matchingEntry) return matchingEntry;
|
||
}
|
||
|
||
return nullptr;
|
||
}
|
||
|
||
template <typename T>
|
||
typename DqnHashTable<T>::Entry *DqnHashTable<T>::Get(const char *const key, i32 keyLen)
|
||
{
|
||
if (keyLen == -1) DqnStr_LenUTF8((u32 *)key, &keyLen);
|
||
i64 hashIndex = DqnHashTableInternal_GetHashIndex(this, key, keyLen);
|
||
Entry *result = DqnHashTableInternal_Get(this, key, keyLen, hashIndex);
|
||
return result;
|
||
}
|
||
|
||
template <typename T>
|
||
typename DqnHashTable<T>::Entry *DqnHashTable<T>::Get(DqnString key)
|
||
{
|
||
Entry *result = this->Get(key.str, key.len);
|
||
return result;
|
||
}
|
||
|
||
template <typename T>
|
||
typename DqnHashTable<T>::Entry *DqnHashTable<T>::Make(const char *const key, i32 keyLen,
|
||
bool *entryAlreadyExisted)
|
||
{
|
||
// NOTE: Internal_Get() function because we want a way to allow re-using the hashIndex
|
||
if (keyLen == -1) DqnStr_LenUTF8((u32 *)key, &keyLen);
|
||
|
||
i64 hashIndex = DqnHashTableInternal_GetHashIndex(this, key, keyLen);
|
||
Entry *existingEntry = DqnHashTableInternal_Get(this, key, keyLen, hashIndex);
|
||
|
||
if (entryAlreadyExisted) *entryAlreadyExisted = true;
|
||
if (existingEntry) return existingEntry;
|
||
|
||
Entry *newEntry = DqnHashTableInternal_GetFreeEntry(this);
|
||
if (newEntry)
|
||
{
|
||
if (entryAlreadyExisted) *entryAlreadyExisted = false;
|
||
|
||
// If entry for hashIndex not used yet, mark it down as a used slot.
|
||
if (!this->entries[hashIndex])
|
||
{
|
||
i64 index =
|
||
Dqn_BinarySearch<i64>(this->usedEntries, this->usedEntriesIndex, hashIndex, Dqn_BinarySearchBound_Lower);
|
||
i64 indexToEndAt = index;
|
||
if (index == -1) indexToEndAt = 0;
|
||
|
||
this->usedEntriesIndex++;
|
||
for (i64 i = this->usedEntriesIndex; i > indexToEndAt; i--)
|
||
this->usedEntries[i] = this->usedEntries[i - 1];
|
||
|
||
this->usedEntries[indexToEndAt] = hashIndex;
|
||
}
|
||
|
||
newEntry->key.InitSize(keyLen, this->memAPI);
|
||
newEntry->key.AppendCStr(key, keyLen);
|
||
newEntry->next = this->entries[hashIndex];
|
||
this->entries[hashIndex] = newEntry;
|
||
|
||
return newEntry;
|
||
}
|
||
else
|
||
{
|
||
DQN_ASSERT_MSG(DQN_INVALID_CODE_PATH, "DqnHashTable_Get() failed: Out of memory.");
|
||
return nullptr;
|
||
}
|
||
}
|
||
|
||
template <typename T>
|
||
typename DqnHashTable<T>::Entry *DqnHashTable<T>::Make(DqnString key, bool *entryAlreadyExisted)
|
||
{
|
||
Entry *result = this->Make(key.str, key.len, entryAlreadyExisted);
|
||
return result;
|
||
}
|
||
|
||
template <typename T>
|
||
void DqnHashTable<T>::Remove(const char *const key, i32 keyLen)
|
||
{
|
||
if (keyLen == -1) DqnStr_LenUTF8((u32 *)key, &keyLen);
|
||
|
||
i64 hashIndex = DqnHashTableInternal_GetHashIndex(this, key, keyLen);
|
||
Entry *entry = this->entries[hashIndex];
|
||
|
||
// TODO(doyle): This is wrong, doesn't update before pointers
|
||
if (entry)
|
||
{
|
||
Entry prevEntry_;
|
||
|
||
Entry *prevEntry = &prevEntry_;
|
||
Entry *entryToFree =
|
||
DqnHashTableInternal_FindMatchingKey<T>(entry, key, (i64)keyLen, &prevEntry);
|
||
if (entryToFree)
|
||
{
|
||
if (entryToFree == entry)
|
||
{
|
||
// Unique entry, so remove this index from the used list as well.
|
||
i64 indexToRemove = Dqn_BinarySearch<i64>(this->usedEntries, this->usedEntriesIndex,
|
||
hashIndex, Dqn_BinarySearchBound_Lower);
|
||
|
||
for (i64 i = indexToRemove; i < this->usedEntriesIndex - 1; i++)
|
||
this->usedEntries[i] = this->usedEntries[i + 1];
|
||
|
||
this->usedEntriesIndex--;
|
||
}
|
||
|
||
if (prevEntry)
|
||
{
|
||
prevEntry->next = nullptr;
|
||
}
|
||
|
||
entryToFree->key.Clear();
|
||
entryToFree->data = {};
|
||
entryToFree->next = this->freeList;
|
||
|
||
this->freeList = entryToFree;
|
||
this->numFreeEntries++;
|
||
}
|
||
}
|
||
}
|
||
|
||
template <typename T>
|
||
void DqnHashTable<T>::Remove(DqnString key)
|
||
{
|
||
Entry result = this->Remove(key.str, key.len);
|
||
}
|
||
|
||
template <typename T>
|
||
void DqnHashTable<T>::Free()
|
||
{
|
||
const size_t ENTRY_SIZE = sizeof(*this->entries);
|
||
for (i64 i = 0; i < usedEntriesIndex; i++)
|
||
{
|
||
i64 indexToFree = usedEntries[i];
|
||
Entry *entryToFree = *(this->entries + indexToFree);
|
||
|
||
entryToFree->key.Free();
|
||
DqnMemAPI::Request info =
|
||
DqnMemAPI::RequestFree(this->memAPI, entryToFree, ENTRY_SIZE);
|
||
this->memAPI.callback(info);
|
||
}
|
||
|
||
// Free usedEntries list
|
||
{
|
||
size_t sizeToFree = sizeof(*this->usedEntries) * this->numEntries;
|
||
DqnMemAPI::Request info =
|
||
DqnMemAPI::RequestFree(this->memAPI, this->usedEntries, sizeToFree);
|
||
this->memAPI.callback(info);
|
||
}
|
||
|
||
// Free freeList
|
||
{
|
||
Entry *entry = this->freeList;
|
||
while (entry)
|
||
{
|
||
Entry *entryToFree = entry;
|
||
entry = entry->next;
|
||
|
||
entryToFree->key.Free();
|
||
DqnMemAPI::Request info = DqnMemAPI::RequestFree(this->memAPI, entryToFree, ENTRY_SIZE);
|
||
this->memAPI.callback(info);
|
||
}
|
||
}
|
||
|
||
// Free the array of ptrs
|
||
{
|
||
size_t sizeToFree = ENTRY_SIZE * this->numEntries;
|
||
DqnMemAPI::Request info =
|
||
DqnMemAPI::RequestFree(this->memAPI, this->entries, sizeToFree);
|
||
this->memAPI.callback(info);
|
||
}
|
||
|
||
}
|
||
|
||
template <typename T>
|
||
bool DqnHashTable<T>::AddNewEntriesToFreeList(i64 num)
|
||
{
|
||
if (num < 0)
|
||
{
|
||
num = DQN_ABS(num);
|
||
for (i64 i = 0; i < num; i++)
|
||
{
|
||
Entry *entryToFree = this->freeList;
|
||
if (entryToFree)
|
||
{
|
||
this->freeList = entryToFree->next;
|
||
DqnMemAPI::Request info = DqnMemAPI::RequestFree(
|
||
this->memAPI, entryToFree, sizeof(*this->freeList));
|
||
this->memAPI.callback(info);
|
||
}
|
||
}
|
||
|
||
this->numFreeEntries -= num;
|
||
}
|
||
else
|
||
{
|
||
for (i64 i = 0; i < num; i++)
|
||
{
|
||
Entry *newEntry = DqnHashTableInternal_AllocateEntry(this);
|
||
if (!newEntry) return false;
|
||
|
||
newEntry->next = this->freeList;
|
||
this->freeList = newEntry;
|
||
}
|
||
|
||
this->numFreeEntries += num;
|
||
}
|
||
|
||
DQN_ASSERT(this->numFreeEntries >= 0);
|
||
return true;
|
||
}
|
||
|
||
template <typename T>
|
||
bool DqnHashTable<T>::ChangeNumEntries(i64 newNumEntries)
|
||
{
|
||
if (newNumEntries == this->numEntries) return true;
|
||
|
||
Entry **newEntries = {};
|
||
size_t newEntriesSize = sizeof(*this->entries) * newNumEntries;
|
||
|
||
i64 *newUsedEntries = {};
|
||
size_t newUsedEntriesSize = sizeof(*this->usedEntries) * newNumEntries;
|
||
i64 newUsedEntriesIndex = 0;
|
||
|
||
// NOTE: If you change allocation order, be sure to change the free order.
|
||
// Allocate newEntries
|
||
{
|
||
DqnMemAPI::Request info = DqnMemAPI::RequestAlloc(this->memAPI, newEntriesSize);
|
||
u8 *newEntriesPtr = this->memAPI.callback(info);
|
||
if (!newEntriesPtr) return false;
|
||
|
||
newEntries = (Entry **)newEntriesPtr;
|
||
}
|
||
|
||
// Allocate usedEntries
|
||
{
|
||
DqnMemAPI::Request info = DqnMemAPI::RequestAlloc(this->memAPI, newUsedEntriesSize);
|
||
u8 *usedEntriesPtr = this->memAPI.callback(info);
|
||
|
||
if (!usedEntriesPtr)
|
||
{
|
||
DqnMemAPI::Request freeInfo =
|
||
DqnMemAPI::RequestFree(this->memAPI, newEntries, newEntriesSize);
|
||
this->memAPI.callback(freeInfo);
|
||
return false;
|
||
}
|
||
|
||
newUsedEntries = (i64 *)usedEntriesPtr;
|
||
}
|
||
|
||
for (i64 i = 0; i < this->usedEntriesIndex; i++)
|
||
{
|
||
i64 usedIndex = this->usedEntries[i];
|
||
Entry *oldEntry = this->entries[usedIndex];
|
||
|
||
while (oldEntry)
|
||
{
|
||
i64 newHashIndex = DqnHashTableInternal_GetHashIndex(newNumEntries, oldEntry->key.str,
|
||
oldEntry->key.len);
|
||
Entry *entryToAppendTo = newEntries[newHashIndex];
|
||
|
||
if (entryToAppendTo)
|
||
{
|
||
while (entryToAppendTo->next)
|
||
entryToAppendTo = entryToAppendTo->next;
|
||
|
||
entryToAppendTo->next = oldEntry;
|
||
}
|
||
else
|
||
{
|
||
newEntries[newHashIndex] = oldEntry;
|
||
newUsedEntries[newUsedEntriesIndex++] = newHashIndex;
|
||
}
|
||
|
||
oldEntry = oldEntry->next;
|
||
}
|
||
}
|
||
|
||
// Free the old entry list
|
||
{
|
||
size_t freeSize = sizeof(*this->entries) * this->numEntries;
|
||
DqnMemAPI::Request info =
|
||
DqnMemAPI::RequestFree(this->memAPI, this->entries, freeSize);
|
||
this->memAPI.callback(info);
|
||
}
|
||
|
||
// Free the old used entry list
|
||
{
|
||
size_t freeSize = sizeof(*this->usedEntries) * this->numEntries;
|
||
DqnMemAPI::Request info =
|
||
DqnMemAPI::RequestFree(this->memAPI, this->usedEntries, freeSize);
|
||
this->memAPI.callback(info);
|
||
}
|
||
|
||
this->entries = newEntries;
|
||
this->numEntries = newNumEntries;
|
||
this->usedEntries = newUsedEntries;
|
||
this->usedEntriesIndex = newUsedEntriesIndex;
|
||
|
||
return true;
|
||
}
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// #DqnMath Public API - Simple Math Helpers
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
DQN_FILE_SCOPE f32 DqnMath_Lerp (f32 a, f32 t, f32 b);
|
||
DQN_FILE_SCOPE f32 DqnMath_Sqrtf (f32 a);
|
||
DQN_FILE_SCOPE f32 DqnMath_Clampf(f32 val, f32 min, f32 max);
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// #DqnV2 Public API - 2D Math Vectors
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
class DqnV2i
|
||
{
|
||
public:
|
||
union
|
||
{
|
||
struct { i32 x, y; };
|
||
struct { i32 w, h; };
|
||
struct { i32 min, max; };
|
||
i32 e[2];
|
||
};
|
||
|
||
DqnV2i();
|
||
DqnV2i(i32 x_, i32 y_);
|
||
DqnV2i(f32 x_, f32 y_);
|
||
DqnV2i(class DqnV2 a);
|
||
|
||
};
|
||
|
||
class DqnV2
|
||
{
|
||
public:
|
||
union
|
||
{
|
||
struct { f32 x, y; };
|
||
struct { f32 w, h; };
|
||
struct { f32 min, max; };
|
||
f32 e[2];
|
||
};
|
||
|
||
DqnV2();
|
||
DqnV2(f32 xy);
|
||
DqnV2(f32 x_, f32 y_);
|
||
DqnV2(i32 x_, i32 y_);
|
||
DqnV2(DqnV2i a);
|
||
|
||
};
|
||
|
||
DQN_FILE_SCOPE DqnV2 DqnV2_Add (DqnV2 a, DqnV2 b);
|
||
DQN_FILE_SCOPE DqnV2 DqnV2_Sub (DqnV2 a, DqnV2 b);
|
||
DQN_FILE_SCOPE DqnV2 DqnV2_Scalei (DqnV2 a, i32 b);
|
||
DQN_FILE_SCOPE DqnV2 DqnV2_Scalef (DqnV2 a, f32 b);
|
||
DQN_FILE_SCOPE DqnV2 DqnV2_Hadamard(DqnV2 a, DqnV2 b);
|
||
DQN_FILE_SCOPE f32 DqnV2_Dot (DqnV2 a, DqnV2 b);
|
||
DQN_FILE_SCOPE bool DqnV2_Equals (DqnV2 a, DqnV2 b);
|
||
|
||
DQN_FILE_SCOPE f32 DqnV2_LengthSquared(const DqnV2 a, const DqnV2 b);
|
||
DQN_FILE_SCOPE f32 DqnV2_Length (const DqnV2 a, const DqnV2 b);
|
||
DQN_FILE_SCOPE DqnV2 DqnV2_Normalise (const DqnV2 a);
|
||
DQN_FILE_SCOPE bool DqnV2_Overlaps ( DqnV2 a, DqnV2 b);
|
||
DQN_FILE_SCOPE DqnV2 DqnV2_Perpendicular(const DqnV2 a);
|
||
|
||
DQN_FILE_SCOPE DqnV2 DqnV2_ResizeKeepAspectRatio(DqnV2 srcSize, DqnV2 targetSize);
|
||
DQN_FILE_SCOPE DqnV2 DqnV2_ConstrainToRatio (DqnV2 dim, DqnV2 ratio); // Resize the dimension to fit the aspect ratio provided. Downscale only.
|
||
|
||
DQN_FILE_SCOPE inline DqnV2 operator- (DqnV2 a, DqnV2 b) { return DqnV2_Sub (a, b); }
|
||
DQN_FILE_SCOPE inline DqnV2 operator+ (DqnV2 a, DqnV2 b) { return DqnV2_Add (a, b); }
|
||
DQN_FILE_SCOPE inline DqnV2 operator* (DqnV2 a, DqnV2 b) { return DqnV2_Hadamard(a, b); }
|
||
DQN_FILE_SCOPE inline DqnV2 operator* (DqnV2 a, f32 b) { return DqnV2_Scalef (a, b); }
|
||
DQN_FILE_SCOPE inline DqnV2 operator* (DqnV2 a, i32 b) { return DqnV2_Scalei (a, b); }
|
||
DQN_FILE_SCOPE inline DqnV2 &operator*=(DqnV2 &a, DqnV2 b) { return (a = DqnV2_Hadamard(a, b)); }
|
||
DQN_FILE_SCOPE inline DqnV2 &operator*=(DqnV2 &a, f32 b) { return (a = DqnV2_Scalef (a, b)); }
|
||
DQN_FILE_SCOPE inline DqnV2 &operator*=(DqnV2 &a, i32 b) { return (a = DqnV2_Scalei (a, b)); }
|
||
DQN_FILE_SCOPE inline DqnV2 &operator-=(DqnV2 &a, DqnV2 b) { return (a = DqnV2_Sub (a, b)); }
|
||
DQN_FILE_SCOPE inline DqnV2 &operator+=(DqnV2 &a, DqnV2 b) { return (a = DqnV2_Add (a, b)); }
|
||
DQN_FILE_SCOPE inline bool operator==(DqnV2 a, DqnV2 b) { return DqnV2_Equals (a, b); }
|
||
|
||
// DqnV2i
|
||
DQN_FILE_SCOPE DqnV2i DqnV2i_Add (DqnV2i a, DqnV2i b);
|
||
DQN_FILE_SCOPE DqnV2i DqnV2i_Sub (DqnV2i a, DqnV2i b);
|
||
DQN_FILE_SCOPE DqnV2i DqnV2i_Scalei (DqnV2i a, i32 b);
|
||
DQN_FILE_SCOPE DqnV2i DqnV2i_Scalef (DqnV2i a, f32 b);
|
||
DQN_FILE_SCOPE DqnV2i DqnV2i_Hadamard(DqnV2i a, DqnV2i b);
|
||
DQN_FILE_SCOPE f32 DqnV2i_Dot (DqnV2i a, DqnV2i b);
|
||
DQN_FILE_SCOPE bool DqnV2i_Equals (DqnV2i a, DqnV2i b);
|
||
|
||
DQN_FILE_SCOPE inline DqnV2i operator- (DqnV2i a, DqnV2i b) { return DqnV2i_Sub (a, b); }
|
||
DQN_FILE_SCOPE inline DqnV2i operator+ (DqnV2i a, DqnV2i b) { return DqnV2i_Add (a, b); }
|
||
DQN_FILE_SCOPE inline DqnV2i operator* (DqnV2i a, DqnV2i b) { return DqnV2i_Hadamard(a, b); }
|
||
DQN_FILE_SCOPE inline DqnV2i operator* (DqnV2i a, f32 b) { return DqnV2i_Scalef (a, b); }
|
||
DQN_FILE_SCOPE inline DqnV2i operator* (DqnV2i a, i32 b) { return DqnV2i_Scalei (a, b); }
|
||
DQN_FILE_SCOPE inline DqnV2i &operator*=(DqnV2i &a, DqnV2i b) { return (a = DqnV2i_Hadamard(a, b)); }
|
||
DQN_FILE_SCOPE inline DqnV2i &operator-=(DqnV2i &a, DqnV2i b) { return (a = DqnV2i_Sub (a, b)); }
|
||
DQN_FILE_SCOPE inline DqnV2i &operator+=(DqnV2i &a, DqnV2i b) { return (a = DqnV2i_Add (a, b)); }
|
||
DQN_FILE_SCOPE inline bool operator==(DqnV2i a, DqnV2i b) { return DqnV2i_Equals (a, b); }
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// #DqnV3 Public API - 3D Math Vectors
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
class DqnV3
|
||
{
|
||
public:
|
||
union
|
||
{
|
||
struct { f32 x, y, z; };
|
||
DqnV2 xy;
|
||
struct { f32 r, g, b; };
|
||
f32 e[3];
|
||
};
|
||
|
||
DqnV3();
|
||
DqnV3(f32 xyz);
|
||
DqnV3(f32 x_, f32 y_, f32 z_);
|
||
DqnV3(i32 x_, i32 y_, i32 z_);
|
||
};
|
||
|
||
class DqnV3i
|
||
{
|
||
public:
|
||
union
|
||
{
|
||
struct { i32 x, y, z; };
|
||
struct { i32 r, g, b; };
|
||
i32 e[3];
|
||
};
|
||
|
||
DqnV3i(i32 x_, i32 y_, i32 z_);
|
||
DqnV3i(f32 x_, f32 y_, f32 z_);
|
||
};
|
||
|
||
// DqnV3
|
||
DQN_FILE_SCOPE DqnV3 DqnV3_Add (DqnV3 a, DqnV3 b);
|
||
DQN_FILE_SCOPE DqnV3 DqnV3_Sub (DqnV3 a, DqnV3 b);
|
||
DQN_FILE_SCOPE DqnV3 DqnV3_Scalei (DqnV3 a, i32 b);
|
||
DQN_FILE_SCOPE DqnV3 DqnV3_Scalef (DqnV3 a, f32 b);
|
||
DQN_FILE_SCOPE DqnV3 DqnV3_Hadamard(DqnV3 a, DqnV3 b);
|
||
DQN_FILE_SCOPE f32 DqnV3_Dot (DqnV3 a, DqnV3 b);
|
||
DQN_FILE_SCOPE bool DqnV3_Equals (DqnV3 a, DqnV3 b);
|
||
DQN_FILE_SCOPE DqnV3 DqnV3_Cross (DqnV3 a, DqnV3 b);
|
||
|
||
DQN_FILE_SCOPE DqnV3 DqnV3_Normalise (DqnV3 a);
|
||
DQN_FILE_SCOPE f32 DqnV3_Length (DqnV3 a, DqnV3 b);
|
||
DQN_FILE_SCOPE f32 DqnV3_LengthSquared(DqnV3 a, DqnV3 b);
|
||
|
||
DQN_FILE_SCOPE inline DqnV3 operator- (DqnV3 a, DqnV3 b) { return DqnV3_Sub (a, b); }
|
||
DQN_FILE_SCOPE inline DqnV3 operator+ (DqnV3 a, DqnV3 b) { return DqnV3_Add (a, b); }
|
||
DQN_FILE_SCOPE inline DqnV3 operator+ (DqnV3 a, f32 b) { return DqnV3_Add (a, DqnV3(b)); }
|
||
DQN_FILE_SCOPE inline DqnV3 operator* (DqnV3 a, DqnV3 b) { return DqnV3_Hadamard(a, b); }
|
||
DQN_FILE_SCOPE inline DqnV3 operator* (DqnV3 a, f32 b) { return DqnV3_Scalef (a, b); }
|
||
DQN_FILE_SCOPE inline DqnV3 operator* (DqnV3 a, i32 b) { return DqnV3_Scalei (a, b); }
|
||
DQN_FILE_SCOPE inline DqnV3 operator/ (DqnV3 a, f32 b) { return DqnV3_Scalef (a, (1.0f/b)); }
|
||
DQN_FILE_SCOPE inline DqnV3 &operator*=(DqnV3 &a, DqnV3 b) { return (a = DqnV3_Hadamard(a, b)); }
|
||
DQN_FILE_SCOPE inline DqnV3 &operator*=(DqnV3 &a, f32 b) { return (a = DqnV3_Scalef (a, b)); }
|
||
DQN_FILE_SCOPE inline DqnV3 &operator*=(DqnV3 &a, i32 b) { return (a = DqnV3_Scalei (a, b)); }
|
||
DQN_FILE_SCOPE inline DqnV3 &operator-=(DqnV3 &a, DqnV3 b) { return (a = DqnV3_Sub (a, b)); }
|
||
DQN_FILE_SCOPE inline DqnV3 &operator+=(DqnV3 &a, DqnV3 b) { return (a = DqnV3_Add (a, b)); }
|
||
DQN_FILE_SCOPE inline bool operator==(DqnV3 a, DqnV3 b) { return DqnV3_Equals (a, b); }
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// #DqnV4 Public API - 4D Math Vectors
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
class DqnV4
|
||
{
|
||
public:
|
||
union
|
||
{
|
||
struct { f32 x, y, z, w; };
|
||
DqnV3 xyz;
|
||
DqnV2 xy;
|
||
|
||
struct { f32 r, g, b, a; };
|
||
DqnV3 rgb;
|
||
|
||
f32 e[4];
|
||
DqnV2 v2[2];
|
||
};
|
||
|
||
DqnV4();
|
||
DqnV4(f32 xyzw);
|
||
DqnV4(f32 x_, f32 y_, f32 z_, f32 w_);
|
||
DqnV4(i32 x_, i32 y_, i32 z_, i32 w_);
|
||
DqnV4(DqnV3 a, f32 w);
|
||
|
||
};
|
||
|
||
DQN_FILE_SCOPE DqnV4 DqnV4_Add (DqnV4 a, DqnV4 b);
|
||
DQN_FILE_SCOPE DqnV4 DqnV4_Sub (DqnV4 a, DqnV4 b);
|
||
DQN_FILE_SCOPE DqnV4 DqnV4_Scalef (DqnV4 a, f32 b);
|
||
DQN_FILE_SCOPE DqnV4 DqnV4_Scalei (DqnV4 a, i32 b);
|
||
DQN_FILE_SCOPE DqnV4 DqnV4_Hadamard(DqnV4 a, DqnV4 b);
|
||
DQN_FILE_SCOPE f32 DqnV4_Dot (DqnV4 a, DqnV4 b);
|
||
DQN_FILE_SCOPE bool DqnV4_Equals (DqnV4 a, DqnV4 b);
|
||
|
||
DQN_FILE_SCOPE inline DqnV4 operator- (DqnV4 a, DqnV4 b) { return DqnV4_Sub (a, b); }
|
||
DQN_FILE_SCOPE inline DqnV4 operator+ (DqnV4 a, DqnV4 b) { return DqnV4_Add (a, b); }
|
||
DQN_FILE_SCOPE inline DqnV4 operator+ (DqnV4 a, f32 b) { return DqnV4_Add (a, DqnV4(b)); }
|
||
DQN_FILE_SCOPE inline DqnV4 operator* (DqnV4 a, DqnV4 b) { return DqnV4_Hadamard(a, b); }
|
||
DQN_FILE_SCOPE inline DqnV4 operator* (DqnV4 a, f32 b) { return DqnV4_Scalef (a, b); }
|
||
DQN_FILE_SCOPE inline DqnV4 operator* (DqnV4 a, i32 b) { return DqnV4_Scalei (a, b); }
|
||
DQN_FILE_SCOPE inline DqnV4 &operator*=(DqnV4 &a, DqnV4 b) { return (a = DqnV4_Hadamard(a, b)); }
|
||
DQN_FILE_SCOPE inline DqnV4 &operator*=(DqnV4 &a, f32 b) { return (a = DqnV4_Scalef (a, b)); }
|
||
DQN_FILE_SCOPE inline DqnV4 &operator*=(DqnV4 &a, i32 b) { return (a = DqnV4_Scalei (a, b)); }
|
||
DQN_FILE_SCOPE inline DqnV4 &operator-=(DqnV4 &a, DqnV4 b) { return (a = DqnV4_Sub (a, b)); }
|
||
DQN_FILE_SCOPE inline DqnV4 &operator+=(DqnV4 &a, DqnV4 b) { return (a = DqnV4_Add (a, b)); }
|
||
DQN_FILE_SCOPE inline bool operator==(DqnV4 a, DqnV4 b) { return DqnV4_Equals (a, b); }
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// #DqnMat4 Public API - 4x4 Math Matrix
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
typedef union DqnMat4
|
||
{
|
||
// TODO(doyle): Row/column instead? More cache friendly since multiplication
|
||
// prefers rows.
|
||
DqnV4 col[4];
|
||
f32 e[4][4]; // Column/row
|
||
} DqnMat4;
|
||
|
||
DQN_FILE_SCOPE DqnMat4 DqnMat4_Identity ();
|
||
|
||
DQN_FILE_SCOPE DqnMat4 DqnMat4_Orthographic(f32 left, f32 right, f32 bottom, f32 top, f32 zNear, f32 zFar);
|
||
DQN_FILE_SCOPE DqnMat4 DqnMat4_Perspective (f32 fovYDegrees, f32 aspectRatio, f32 zNear, f32 zFar);
|
||
DQN_FILE_SCOPE DqnMat4 DqnMat4_LookAt (DqnV3 eye, DqnV3 center, DqnV3 up);
|
||
|
||
DQN_FILE_SCOPE DqnMat4 DqnMat4_Translate3f (f32 x, f32 y, f32 z);
|
||
DQN_FILE_SCOPE DqnMat4 DqnMat4_TranslateV3 (DqnV3 vec);
|
||
DQN_FILE_SCOPE DqnMat4 DqnMat4_Rotate (f32 radians, f32 x, f32 y, f32 z);
|
||
DQN_FILE_SCOPE DqnMat4 DqnMat4_Scale (f32 x, f32 y, f32 z);
|
||
DQN_FILE_SCOPE DqnMat4 DqnMat4_ScaleV3 (DqnV3 scale);
|
||
DQN_FILE_SCOPE DqnMat4 DqnMat4_Mul (DqnMat4 a, DqnMat4 b);
|
||
DQN_FILE_SCOPE DqnV4 DqnMat4_MulV4 (DqnMat4 a, DqnV4 b);
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// #DqnRect Public API - Rectangles
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
class DqnRect
|
||
{
|
||
public:
|
||
DqnV2 min;
|
||
DqnV2 max;
|
||
|
||
DqnRect();
|
||
DqnRect(DqnV2 origin, DqnV2 size);
|
||
DqnRect(f32 x, f32 y, f32 w, f32 h);
|
||
DqnRect(i32 x, i32 y, i32 w, i32 h);
|
||
|
||
void GetSize (f32 *const width, f32 *const height) const;
|
||
DqnV2 GetSize () const;
|
||
DqnV2 GetCenter() const;
|
||
|
||
DqnRect ClipRect (const DqnRect clip) const;
|
||
DqnRect Move (const DqnV2 shift) const;
|
||
bool ContainsP(const DqnV2 p) const;
|
||
};
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// #DqnChar Public API - Char Operations
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
DQN_FILE_SCOPE char DqnChar_ToLower (char c);
|
||
DQN_FILE_SCOPE char DqnChar_ToUpper (char c);
|
||
DQN_FILE_SCOPE bool DqnChar_IsDigit (char c);
|
||
DQN_FILE_SCOPE bool DqnChar_IsAlpha (char c);
|
||
DQN_FILE_SCOPE bool DqnChar_IsAlphanum(char c);
|
||
|
||
DQN_FILE_SCOPE char *DqnChar_SkipWhitespace(char *ptr);
|
||
|
||
// TODO(doyle): this is NOT UTF8 safe
|
||
// ch: Char to find
|
||
// len: The length of the string stored in ptr, (doesn't care if it includes null terminator)
|
||
// lenToChar: The length to the char from end of the ptr, i.e. (ptr + len)
|
||
// return: The ptr to the last char, null if it could not find.
|
||
DQN_FILE_SCOPE char *DqnChar_FindLastChar (char *ptr, const char ch, i32 len, u32 *const lenToChar);
|
||
|
||
// returns: The value to advance the ptr by, this can be different from the line
|
||
// length if there are new lines or leading whitespaces in the next line
|
||
DQN_FILE_SCOPE i32 DqnChar_GetNextLine (const char *ptr, i32 *lineLength);
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// #DqnStr Public API - Str Operations
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// numBytesToCompare: If -1, cmp runs until \0 is encountered.
|
||
// return: 0 if equal. 0 < if a is before b, > 0 if a is after b
|
||
DQN_FILE_SCOPE i32 DqnStr_Cmp(const char *const a, const char *const b, i32 numBytesToCompare = -1, bool ignoreCase = false);
|
||
|
||
// return: String length not including the nullptr terminator. 0 if invalid args.
|
||
DQN_FILE_SCOPE i32 DqnStr_Len (const char *const a);
|
||
DQN_FILE_SCOPE i32 DqnStr_LenUTF8(const u32 *const a, i32 *const lenInBytes = nullptr);
|
||
|
||
// Get the String length starting from a, up to and not including the first delimiter character.
|
||
DQN_FILE_SCOPE i32 DqnStr_LenDelimitWith(char *const a, const char delimiter);
|
||
|
||
// return: The dest argument, nullptr if args invalid (i.e. nullptr pointers or numChars < 0)
|
||
DQN_FILE_SCOPE char *DqnStr_Copy(char *const dest, const char *const src, const i32 numChars);
|
||
|
||
DQN_FILE_SCOPE void DqnStr_Reverse(char *const buf, const u32 bufSize);
|
||
|
||
// return: Number of bytes in codepoint, 0 if *a becomes invalid or end of stream.
|
||
DQN_FILE_SCOPE i32 DqnStr_ReadUTF8Codepoint(const u32 *const a, u32 *outCodepoint);
|
||
|
||
// return: The offset into the src to first char of the found string. Returns -1 if not found
|
||
DQN_FILE_SCOPE i32 DqnStr_FindFirstOccurence(const char *const src, const i32 srcLen, const char *const find, const i32 findLen, bool ignoreCase = false);
|
||
// return: Helper function that returns the pointer to the first occurence, nullptr if not found.
|
||
DQN_FILE_SCOPE char *DqnStr_GetFirstOccurence(char *const src, const i32 srcLen, char *const find, const i32 findLen, bool ignoreCase = false);
|
||
DQN_FILE_SCOPE bool DqnStr_HasSubstring (const char *const src, const i32 srcLen, const char *const find, const i32 findLen, bool ignoreCase = false);
|
||
|
||
#define DQN_32BIT_NUM_MAX_STR_SIZE 11
|
||
#define DQN_64BIT_NUM_MAX_STR_SIZE 21
|
||
// Return the len of the derived string. If buf is nullptr and or bufSize is 0 the function returns the
|
||
// required string length for the integer
|
||
// TODO NOTE(doyle): Parsing stops when a non-digit is encountered, so numbers with ',' don't work atm.
|
||
DQN_FILE_SCOPE i32 Dqn_I64ToStr(const i64 value, char *const buf, const i32 bufSize);
|
||
DQN_FILE_SCOPE i64 Dqn_StrToI64(const char *const buf, const i32 bufSize);
|
||
// WARNING: Not robust, precision errors and whatnot but good enough!
|
||
DQN_FILE_SCOPE f32 Dqn_StrToF32(const char *const buf, const i32 bufSize);
|
||
|
||
// Both return the number of bytes read, return 0 if invalid codepoint or UTF8
|
||
DQN_FILE_SCOPE u32 Dqn_UCSToUTF8(u32 *const dest, const u32 character);
|
||
DQN_FILE_SCOPE u32 Dqn_UTF8ToUCS(u32 *const dest, const u32 character);
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// #DqnWChar Public API - WChar Operations
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
DQN_FILE_SCOPE bool DqnWChar_IsDigit(const wchar_t c);
|
||
DQN_FILE_SCOPE wchar_t DqnWChar_ToLower(const wchar_t c);
|
||
|
||
DQN_FILE_SCOPE wchar_t *DqnWChar_SkipWhitespace(wchar_t *ptr);
|
||
DQN_FILE_SCOPE wchar_t *DqnWChar_FindLastChar (wchar_t *ptr, const wchar_t ch, i32 len, u32 *const lenToChar);
|
||
DQN_FILE_SCOPE i32 DqnWChar_GetNextLine (const wchar_t *ptr, i32 *lineLength);
|
||
|
||
DQN_FILE_SCOPE i32 DqnWStr_Cmp (const wchar_t *const a, const wchar_t *const b);
|
||
DQN_FILE_SCOPE i32 DqnWStr_FindFirstOccurence(const wchar_t *const src, const i32 srcLen, const wchar_t *const find, const i32 findLen);
|
||
DQN_FILE_SCOPE bool DqnWStr_HasSubstring (const wchar_t *const src, const i32 srcLen, const wchar_t *const find, const i32 findLen);
|
||
DQN_FILE_SCOPE i32 DqnWStr_Len (const wchar_t *const a);
|
||
DQN_FILE_SCOPE i32 DqnWStr_LenDelimitWith (const wchar_t *const a, const wchar_t delimiter);
|
||
DQN_FILE_SCOPE void DqnWStr_Reverse (wchar_t *const buf, const u32 bufSize);
|
||
|
||
DQN_FILE_SCOPE i32 Dqn_WStrToI32(const wchar_t *const buf, const i32 bufSize);
|
||
DQN_FILE_SCOPE i32 Dqn_I32ToWStr(i32 value, wchar_t *buf, i32 bufSize);
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// #DqnRnd Public API - Random Number Generator
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// PCG (Permuted Congruential Generator) Random Number Generator
|
||
class DqnRndPCG
|
||
{
|
||
public:
|
||
u64 state[2];
|
||
|
||
void Init (); // Uses rdstc to create a seed
|
||
void InitWithSeed(u32 seed);
|
||
|
||
u32 Next (); // return: A random number N between [0, 0xFFFFFFFF]
|
||
f32 Nextf(); // return: A random float N between [0.0, 1.0f]
|
||
i32 Range(i32 min, i32 max); // return: A random integer N between [min, max]
|
||
};
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// #Dqn_* Public API
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
|
||
template <typename T>
|
||
using Dqn_QuickSortLessThanCallback = bool (*)(const T *const , const T *const);
|
||
|
||
template <typename T>
|
||
DQN_FILE_SCOPE void Dqn_QuickSort(T *const array, const i64 size,
|
||
Dqn_QuickSortLessThanCallback<T> IsLessThan)
|
||
{
|
||
if (!array || size <= 1 || !IsLessThan) return;
|
||
|
||
#if 1
|
||
// Insertion Sort, under 24->32 is an optimal amount
|
||
const i32 QUICK_SORT_THRESHOLD = 24;
|
||
if (size < QUICK_SORT_THRESHOLD)
|
||
{
|
||
i32 itemToInsertIndex = 1;
|
||
while (itemToInsertIndex < size)
|
||
{
|
||
for (i32 checkIndex = 0; checkIndex < itemToInsertIndex; checkIndex++)
|
||
{
|
||
if (!IsLessThan(&array[checkIndex], &array[itemToInsertIndex]))
|
||
{
|
||
T itemToInsert = array[itemToInsertIndex];
|
||
for (i32 i = itemToInsertIndex; i > checkIndex; i--)
|
||
array[i] = array[i - 1];
|
||
|
||
array[checkIndex] = itemToInsert;
|
||
break;
|
||
}
|
||
}
|
||
itemToInsertIndex++;
|
||
}
|
||
|
||
return;
|
||
}
|
||
#endif
|
||
|
||
DqnRndPCG state; state.Init();
|
||
|
||
auto lastIndex = size - 1;
|
||
auto pivotIndex = (i64)state.Range(0, (i32)lastIndex);
|
||
auto partitionIndex = 0;
|
||
auto startIndex = 0;
|
||
|
||
// Swap pivot with last index, so pivot is always at the end of the array.
|
||
// This makes logic much simpler.
|
||
DQN_SWAP(T, array[lastIndex], array[pivotIndex]);
|
||
pivotIndex = lastIndex;
|
||
|
||
// 4^, 8, 7, 5, 2, 3, 6
|
||
if (IsLessThan(&array[startIndex], &array[pivotIndex])) partitionIndex++;
|
||
startIndex++;
|
||
|
||
// 4, |8, 7, 5^, 2, 3, 6*
|
||
// 4, 5, |7, 8, 2^, 3, 6*
|
||
// 4, 5, 2, |8, 7, ^3, 6*
|
||
// 4, 5, 2, 3, |7, 8, ^6*
|
||
for (auto checkIndex = startIndex; checkIndex < lastIndex; checkIndex++)
|
||
{
|
||
if (IsLessThan(&array[checkIndex], &array[pivotIndex]))
|
||
{
|
||
DQN_SWAP(T, array[partitionIndex], array[checkIndex]);
|
||
partitionIndex++;
|
||
}
|
||
}
|
||
|
||
// Move pivot to right of partition
|
||
// 4, 5, 2, 3, |6, 8, ^7*
|
||
DQN_SWAP(T, array[partitionIndex], array[pivotIndex]);
|
||
Dqn_QuickSort(array, partitionIndex, IsLessThan);
|
||
|
||
// Skip the value at partion index since that is guaranteed to be sorted.
|
||
// 4, 5, 2, 3, (x), 8, 7
|
||
i32 oneAfterPartitionIndex = partitionIndex + 1;
|
||
Dqn_QuickSort(array + oneAfterPartitionIndex, (size - oneAfterPartitionIndex), IsLessThan);
|
||
}
|
||
|
||
template <typename T>
|
||
DQN_FILE_SCOPE void Dqn_QuickSort(T *const array, const i64 size)
|
||
{
|
||
if (!array || size <= 1) return;
|
||
|
||
#if 1
|
||
// Insertion Sort, under 24->32 is an optimal amount
|
||
const i32 QUICK_SORT_THRESHOLD = 24;
|
||
if (size < QUICK_SORT_THRESHOLD)
|
||
{
|
||
i32 itemToInsertIndex = 1;
|
||
while (itemToInsertIndex < size)
|
||
{
|
||
for (i32 checkIndex = 0; checkIndex < itemToInsertIndex; checkIndex++)
|
||
{
|
||
if (!(array[checkIndex] < array[itemToInsertIndex]))
|
||
{
|
||
T itemToInsert = array[itemToInsertIndex];
|
||
for (i32 i = itemToInsertIndex; i > checkIndex; i--)
|
||
array[i] = array[i - 1];
|
||
|
||
array[checkIndex] = itemToInsert;
|
||
break;
|
||
}
|
||
}
|
||
itemToInsertIndex++;
|
||
}
|
||
|
||
return;
|
||
}
|
||
#endif
|
||
|
||
DqnRndPCG state; state.Init();
|
||
|
||
auto lastIndex = size - 1;
|
||
auto pivotIndex = (i64)state.Range(0, (i32)lastIndex); // TODO(doyle): RNG 64bit
|
||
auto partitionIndex = 0;
|
||
auto startIndex = 0;
|
||
|
||
// Swap pivot with last index, so pivot is always at the end of the array.
|
||
// This makes logic much simpler.
|
||
DQN_SWAP(T, array[lastIndex], array[pivotIndex]);
|
||
pivotIndex = lastIndex;
|
||
|
||
// 4^, 8, 7, 5, 2, 3, 6
|
||
if (array[startIndex] < array[pivotIndex]) partitionIndex++;
|
||
startIndex++;
|
||
|
||
// 4, |8, 7, 5^, 2, 3, 6*
|
||
// 4, 5, |7, 8, 2^, 3, 6*
|
||
// 4, 5, 2, |8, 7, ^3, 6*
|
||
// 4, 5, 2, 3, |7, 8, ^6*
|
||
for (auto checkIndex = startIndex; checkIndex < lastIndex; checkIndex++)
|
||
{
|
||
if (array[checkIndex] < array[pivotIndex])
|
||
{
|
||
DQN_SWAP(T, array[partitionIndex], array[checkIndex]);
|
||
partitionIndex++;
|
||
}
|
||
}
|
||
|
||
// Move pivot to right of partition
|
||
// 4, 5, 2, 3, |6, 8, ^7*
|
||
DQN_SWAP(T, array[partitionIndex], array[pivotIndex]);
|
||
Dqn_QuickSort(array, partitionIndex);
|
||
|
||
// Skip the value at partion index since that is guaranteed to be sorted.
|
||
// 4, 5, 2, 3, (x), 8, 7
|
||
i32 oneAfterPartitionIndex = partitionIndex + 1;
|
||
Dqn_QuickSort(array + oneAfterPartitionIndex, (size - oneAfterPartitionIndex));
|
||
}
|
||
|
||
template <typename T>
|
||
using Dqn_BinarySearchLessThanCallback = bool (*)(const T&, const T&);
|
||
|
||
enum Dqn_BinarySearchBound
|
||
{
|
||
Dqn_BinarySearchBound_Normal, // Return the index of the first item that matches the find value
|
||
Dqn_BinarySearchBound_Lower, // Return the index of the first item lower than the find value
|
||
Dqn_BinarySearchBound_Higher, // Return the index of the first item higher than the find value
|
||
};
|
||
|
||
// bound: The behaviour of the binary search,
|
||
// return: -1 if element not found, otherwise index of the element.
|
||
// For higher and lower bounds return -1 if there is no element higher/lower than the
|
||
// find value (i.e. -1 if the 0th element is the find val for lower bound).
|
||
template <typename T>
|
||
DQN_FILE_SCOPE i64
|
||
Dqn_BinarySearch(T *const array, const i64 size, const T &find,
|
||
const Dqn_BinarySearchLessThanCallback<T> IsLessThan,
|
||
const Dqn_BinarySearchBound bound = Dqn_BinarySearchBound_Normal)
|
||
{
|
||
if (size == 0 || !array) return -1;
|
||
|
||
i64 start = 0;
|
||
i64 end = size - 1;
|
||
i64 mid = (i64)((start + end) * 0.5f);
|
||
|
||
while (start <= end)
|
||
{
|
||
if (array[mid] == find)
|
||
{
|
||
if (bound == Dqn_BinarySearchBound_Lower)
|
||
{
|
||
// NOTE: We can always -1 because at worst case, 0 index will go to -1 which is
|
||
// correct behaviour.
|
||
return mid - 1;
|
||
}
|
||
else if (bound == Dqn_BinarySearchBound_Higher)
|
||
{
|
||
if ((mid + 1) >= size) return -1;
|
||
return mid + 1;
|
||
}
|
||
else
|
||
{
|
||
return mid;
|
||
}
|
||
}
|
||
else if (IsLessThan(array[mid], find)) start = mid + 1;
|
||
else end = mid - 1;
|
||
mid = (i64)((start + end) * 0.5f);
|
||
}
|
||
|
||
if (bound == Dqn_BinarySearchBound_Lower)
|
||
{
|
||
if (find < array[mid]) return -1;
|
||
return mid;
|
||
}
|
||
else if (bound == Dqn_BinarySearchBound_Higher)
|
||
{
|
||
if (find > array[mid]) return -1;
|
||
return mid;
|
||
}
|
||
else
|
||
{
|
||
return -1;
|
||
}
|
||
}
|
||
|
||
template <typename T>
|
||
DQN_FILE_SCOPE i64
|
||
Dqn_BinarySearch(T *const array, const i64 size, const i64 &find,
|
||
const Dqn_BinarySearchBound bound = Dqn_BinarySearchBound_Normal)
|
||
{
|
||
if (size == 0 || !array) return -1;
|
||
|
||
i64 start = 0;
|
||
i64 end = size - 1;
|
||
i64 mid = (i64)((start + end) * 0.5f);
|
||
|
||
while (start <= end)
|
||
{
|
||
if (array[mid] == find)
|
||
{
|
||
if (bound == Dqn_BinarySearchBound_Lower)
|
||
{
|
||
return mid - 1;
|
||
}
|
||
else if (bound == Dqn_BinarySearchBound_Higher)
|
||
{
|
||
if ((mid + 1) >= size) return -1;
|
||
return mid + 1;
|
||
}
|
||
else
|
||
{
|
||
return mid;
|
||
}
|
||
}
|
||
else if (array[mid] < find) start = mid + 1;
|
||
else end = mid - 1;
|
||
mid = (i64)((start + end) * 0.5f);
|
||
}
|
||
|
||
if (bound == Dqn_BinarySearchBound_Lower)
|
||
{
|
||
if (find < array[mid]) return -1;
|
||
return mid;
|
||
}
|
||
else if (bound == Dqn_BinarySearchBound_Higher)
|
||
{
|
||
if (find > array[mid]) return -1;
|
||
return mid;
|
||
}
|
||
else
|
||
{
|
||
return -1;
|
||
}
|
||
}
|
||
|
||
#endif /* DQN_H */
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// #XPlatform (Win32 & Unix) Public API
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// Functions in the Cross Platform are guaranteed to be supported in both Unix
|
||
// and Win32
|
||
|
||
// NOTE(doyle): DQN_PLATFORM_HEADER is enabled by the user to have the function prototypes be
|
||
// visible. DQN_PLATFORM_H is like a normal header guard that ensures singular declaration of
|
||
// functions.
|
||
#ifdef DQN_PLATFORM_HEADER
|
||
|
||
#ifndef DQN_PLATFORM_H
|
||
#define DQN_PLATFORM_H
|
||
|
||
#if defined(DQN_IS_WIN32)
|
||
#define WIN32_LEAN_AND_MEAN 1
|
||
#include <Windows.h>
|
||
|
||
#elif defined(DQN_IS_UNIX)
|
||
#include <pthread.h>
|
||
#include <semaphore.h>
|
||
|
||
#endif
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// XPlatform > #DqnFile Public API - File I/O
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
enum DqnFilePermissionFlag
|
||
{
|
||
DqnFilePermissionFlag_Read = (1 << 0),
|
||
DqnFilePermissionFlag_Write = (1 << 1),
|
||
DqnFilePermissionFlag_Execute = (1 << 2),
|
||
DqnFilePermissionFlag_All = (1 << 3)
|
||
};
|
||
|
||
enum DqnFileAction
|
||
{
|
||
// Only open file if it exists. Fails and returns false if file did not
|
||
// exist or could not open.
|
||
DqnFileAction_OpenOnly,
|
||
|
||
// Try and create file. Return true if it was able to create. If it already
|
||
// exists, this will fail.
|
||
DqnFileAction_CreateIfNotExist,
|
||
|
||
// Clear the file contents to zero if it exists. Fails and returns false if
|
||
// file does not exist.
|
||
DqnFileAction_ClearIfExist,
|
||
|
||
// Always create, even if it exists
|
||
DqnFileAction_ForceCreate,
|
||
};
|
||
|
||
typedef struct DqnFile
|
||
{
|
||
u32 permissionFlags;
|
||
void *handle;
|
||
size_t size;
|
||
|
||
// If raiiCleanup is true, close() is called in the destructor on scope exit. Can be changed at
|
||
// any point by user.
|
||
bool raiiCleanup;
|
||
DqnFile (const bool raiiCleanup = false);
|
||
~DqnFile();
|
||
|
||
bool Open (const char *const path, const u32 permissionFlags_, const enum DqnFileAction action);
|
||
bool OpenW(const wchar_t *const path, const u32 permissionFlags_, const enum DqnFileAction action);
|
||
size_t Write(u8 *const buffer, const size_t numBytesToWrite, const size_t fileOffset);
|
||
size_t Read (u8 *const buffer, const size_t numBytesToRead);
|
||
void Close();
|
||
} DqnFile;
|
||
|
||
// NOTE: W(ide) versions of functions only work on Win32, since Unix is already UTF-8 compatible.
|
||
|
||
// Open a handle for file read and writing. Deleting files does not need a handle. Handles should be
|
||
// closed before deleting files otherwise the OS may not be able to delete the file.
|
||
// return: FALSE if invalid args or failed to get handle (i.e. insufficient permissions)
|
||
DQN_FILE_SCOPE bool DqnFile_Open (const char *const path, DqnFile *const file, const u32 permissionFlags, const enum DqnFileAction action);
|
||
DQN_FILE_SCOPE bool DqnFile_OpenW(const wchar_t *const path, DqnFile *const file, const u32 permissionFlags, const enum DqnFileAction action);
|
||
|
||
// fileOffset: The byte offset to starting writing from.
|
||
// return: The number of bytes written. 0 if invalid args or it failed to write.
|
||
DQN_FILE_SCOPE size_t DqnFile_Write(const DqnFile *const file, u8 *const buffer, const size_t numBytesToWrite, const size_t fileOffset);
|
||
|
||
// return: The number of bytes read. 0 if invalid args or it failed to read.
|
||
DQN_FILE_SCOPE size_t DqnFile_Read (const DqnFile *const file, u8 *const buffer, const size_t numBytesToRead);
|
||
|
||
// Read the entire file at path into the given buffer. To determine the necessary buffer size, use
|
||
// DqnFile_GetFileSize()
|
||
// buffer: The buffer to put data into.
|
||
// bufferSize: The size of the given buffer.
|
||
// bytesRead: (Optionally) Pass in a pointer to a size_t to get how many bytes of the buffer was
|
||
// used. Will be valid only if function returns true. This is basically the return value
|
||
// of DqnFile_Read()
|
||
// return: FALSE if insufficient bufferSize OR file access failure OR invalid args (i.e nullptr)
|
||
DQN_FILE_SCOPE bool DqnFile_ReadEntireFile (const char *const path, u8 *const buffer,
|
||
const size_t bufferSize, size_t *const bytesRead);
|
||
DQN_FILE_SCOPE bool DqnFile_ReadEntireFileW(const wchar_t *const path, u8 *const buffer,
|
||
const size_t bufferSize, size_t *const bytesRead);
|
||
|
||
// bufSize: Pass in (optional) ptr to a size_t to fill out with the size of the returned buffer. Holds invalid data
|
||
// if the returned ptr is null.
|
||
// returns: nullptr if file could not be read, malloc failed or string.
|
||
// Free the buffer using the memAPI, if default heap allocator, this is just free().
|
||
DQN_FILE_SCOPE u8 *DqnFile_ReadEntireFileSimple (const char *const path, size_t *const bufSize, DqnMemAPI memAPI = DqnMemAPI_HeapAllocator());
|
||
DQN_FILE_SCOPE u8 *DqnFile_ReadEntireFileSimpleW(const wchar_t *const path, size_t *const bufSize, DqnMemAPI memAPI = DqnMemAPI_HeapAllocator());
|
||
|
||
// File close invalidates the handle after it is called.
|
||
DQN_FILE_SCOPE void DqnFile_Close(DqnFile *const file);
|
||
|
||
// size: Pass in a pointer to a size_t where the file size gets put into. It holds invalid data if
|
||
// function returns false.
|
||
DQN_FILE_SCOPE bool DqnFile_GetFileSize (const char *const path, size_t *const size);
|
||
DQN_FILE_SCOPE bool DqnFile_GetFileSizeW(const wchar_t *const path, size_t *const size);
|
||
|
||
// NOTE: You can't delete a file unless the handle has been closed to it on Win32.
|
||
DQN_FILE_SCOPE bool DqnFile_Delete (const char *const path);
|
||
DQN_FILE_SCOPE bool DqnFile_DeleteW(const wchar_t *const path);
|
||
|
||
// numFiles: Pass in a pointer to a u32. The function fills it out with the number of entries.
|
||
// return: An array of strings of the files in the directory in UTF-8. The directory lisiting is
|
||
// allocated with malloc and must be freed using free() or the helper function DqnFile_ReadFree()
|
||
DQN_FILE_SCOPE char **DqnFile_ListDir (const char *const dir, u32 *const numFiles);
|
||
DQN_FILE_SCOPE void DqnFile_ListDirFree(char **fileList, u32 numFiles);
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// XPlatform > #DqnTimer Public API - High Resolution Timer
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
DQN_FILE_SCOPE f64 DqnTimer_NowInMs();
|
||
DQN_FILE_SCOPE f64 DqnTimer_NowInS ();
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// XPlatform > #DqnLock Public API - Mutex Synchronisation
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
typedef struct DqnLock
|
||
{
|
||
#if defined(DQN_IS_WIN32)
|
||
CRITICAL_SECTION win32Handle;
|
||
|
||
#elif defined(DQN_IS_UNIX)
|
||
pthread_mutex_t unixHandle;
|
||
|
||
#else
|
||
#error Unknown platform
|
||
|
||
#endif
|
||
|
||
// Win32 only, when trying to acquire a locked lock, it is the number of spins permitted
|
||
// spinlocking on the lock before being blocked. Set before init if you want a different value.
|
||
u32 win32SpinCount = 16000;
|
||
|
||
bool Init ();
|
||
void Acquire();
|
||
void Release();
|
||
void Delete ();
|
||
|
||
// Create a lock guard on the lock this is invoked on.
|
||
struct DqnLockGuard LockGuard();
|
||
} DqnLock;
|
||
|
||
// Lock guard automatically acquires a lock on construction and releases the associated lock on
|
||
// destruction. If the lock is unable to be acquired, the program blocks at construction until it
|
||
// can.
|
||
struct DqnLockGuard
|
||
{
|
||
// lock: Takes a pointer to a pre-existing and already initialised lock
|
||
// bool: Pass in (optionally) a pointer to a bool which returns whether a lock was successful.
|
||
// FALSE if lock is nullptr.
|
||
DqnLockGuard(DqnLock *const lock_, bool *const succeeded);
|
||
~DqnLockGuard();
|
||
|
||
private:
|
||
DqnLock *lock;
|
||
};
|
||
|
||
// lock: Pass in a pointer to a default DqnLock struct.
|
||
// In Win32, you may optionally change the win32Spincount.
|
||
DQN_FILE_SCOPE bool DqnLock_Init (DqnLock *const lock);
|
||
DQN_FILE_SCOPE void DqnLock_Acquire(DqnLock *const lock);
|
||
DQN_FILE_SCOPE void DqnLock_Release(DqnLock *const lock);
|
||
DQN_FILE_SCOPE void DqnLock_Delete (DqnLock *const lock);
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// XPlatform > #DqnJobQueue Public API - Multithreaded Job Queue
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// DqnJobQueue is a platform abstracted "lockless" multithreaded work queue. It will create threads
|
||
// and assign threads to complete the job via the job "callback" using the "userData" supplied.
|
||
|
||
// Usage
|
||
// 1. Prepare your callback function for threads to execute following the 'DqnJob_Callback' function
|
||
// signature.
|
||
// 2. Create a job queue with DqnJobQueue_InitWithMem()
|
||
// 3. Add jobs with DqnJobQueue_AddJob() and threads will be dispatched automatically.
|
||
|
||
// When all jobs are sent you can also utilise the main executing thread to complete jobs whilst you
|
||
// wait for all jobs to complete using DqnJobQueue_TryExecuteNextJob() or spinlock on
|
||
// DqnJobQueue_AllJobsComplete(). Alternatively you can combine both for the main thread to help
|
||
// complete work and not move on until all tasks are complete.
|
||
|
||
typedef struct DqnJobQueue DqnJobQueue;
|
||
|
||
typedef void DqnJob_Callback(DqnJobQueue *const queue, void *const userData);
|
||
typedef struct DqnJob
|
||
{
|
||
DqnJob_Callback *callback;
|
||
void *userData;
|
||
} DqnJob;
|
||
|
||
typedef struct DqnJobQueue
|
||
{
|
||
// JobList Circular Array, is setup in Init()
|
||
DqnJob *jobList;
|
||
u32 size;
|
||
|
||
// NOTE(doyle): Modified by main+worker threads
|
||
i32 volatile jobToExecuteIndex;
|
||
i32 volatile numJobsToComplete;
|
||
|
||
#if defined(DQN_IS_WIN32)
|
||
void *semaphore;
|
||
|
||
#elif defined(DQN_IS_UNIX)
|
||
sem_t semaphore;
|
||
|
||
#else
|
||
#error Unknown platform
|
||
|
||
#endif
|
||
|
||
// NOTE: Modified by main thread ONLY
|
||
i32 volatile jobInsertIndex;
|
||
|
||
bool Init (DqnJob *const jobList_, const u32 jobListSize, const u32 numThreads);
|
||
bool AddJob (const DqnJob job);
|
||
|
||
void BlockAndCompleteAllJobs();
|
||
bool TryExecuteNextJob();
|
||
bool AllJobsComplete ();
|
||
} DqnJobQueue;
|
||
|
||
// TODO(doyle): Queue delete, thread delete
|
||
|
||
// queue: Pass a pointer to a zero cleared DqnJobQueue struct
|
||
// jobList: Pass in a pointer to an array of DqnJob's
|
||
// jobListSize: The number of elements in the jobList array
|
||
// numThreads: The number of threads the queue should request from the OS for working on the queue
|
||
// return: FALSE if invalid args i.e. nullptr ptrs or jobListSize & numThreads == 0
|
||
DQN_FILE_SCOPE bool DqnJobQueue_Init(DqnJobQueue *const queue, const DqnJob *const jobList,
|
||
const u32 jobListSize, const u32 numThreads);
|
||
|
||
// return: FALSE if the job is not able to be added, this occurs if the queue is full.
|
||
DQN_FILE_SCOPE bool DqnJobQueue_AddJob(DqnJobQueue *const queue, const DqnJob job);
|
||
|
||
// Helper function that combines TryExecuteNextJob() and AllJobsComplete(), i.e.
|
||
// complete all work before moving on. Does nothing if queue is nullptr.
|
||
DQN_FILE_SCOPE void DqnJobQueue_BlockAndCompleteAllJobs(DqnJobQueue *const queue);
|
||
|
||
// return: TRUE if there was a job to execute (the calling thread executes it). FALSE if it could
|
||
// not get a job. It may return FALSE whilst there are still jobs, this means that another thread
|
||
// has taken the job before the calling thread could and should NOT be used to determine if there
|
||
// are any remaining jobs left. That can only be definitively known using
|
||
// DqnJobQueue_AllJobsComplete(). This is typically combined like so ..
|
||
// while (DqnJobQueue_TryExecuteNextJob(queue) || !DqnJobQueue_AllJobsComplete(queue));
|
||
// Return FALSE also if queue is a nullptr pointer.
|
||
DQN_FILE_SCOPE bool DqnJobQueue_TryExecuteNextJob(DqnJobQueue *const queue);
|
||
DQN_FILE_SCOPE bool DqnJobQueue_AllJobsComplete (DqnJobQueue *const queue);
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// XPlatform > #DqnAtomic Public API - Interlocks/Atomic Operations
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// All atomic operations generate a full read/write barrier. This is implicitly enforced by the
|
||
// OS calls, not explicitly in my code.
|
||
|
||
// swapVal: The value to put into "dest", IF at point of read, "dest" has the value of "compareVal"
|
||
// compareVal: The value to check in "dest"
|
||
// return: Return the original value that was in "dest"
|
||
DQN_FILE_SCOPE i32 DqnAtomic_CompareSwap32(i32 volatile *const dest, const i32 swapVal, const i32 compareVal);
|
||
|
||
// Add "value" to src
|
||
// return: The new value at src
|
||
DQN_FILE_SCOPE i32 DqnAtomic_Add32(i32 volatile *const src, const i32 value);
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// XPlatform > #DqnPlatform Public API - Common Platform API Helpers
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// Uses a single call to DqnMem_Calloc() and DqnMem_Free(). Not completely platform "independent" for Unix.
|
||
// numCores: numThreadsPerCore: Can be nullptr, the function will just skip it.
|
||
DQN_FILE_SCOPE void DqnPlatform_GetNumThreadsAndCores(u32 *const numCores, u32 *const numThreadsPerCore);
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// #Platform Public API
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// Functions here are only available for the #defined sections (i.e. all functions in
|
||
// DQN_WIN32_PLATFORM only have a valid implementation in Win32.
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// #Win32Platform Public API
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
#if defined(DQN_IS_WIN32)
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// Platform > #DqnWin32 Public API - Common Win32 API Helpers
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
#define DQN_WIN32_ERROR_BOX(text, title) MessageBoxA(nullptr, text, title, MB_OK);
|
||
|
||
// The function automatically null-terminates the output string.
|
||
// out: A pointer to the buffer to receive the characters.
|
||
// outLen: The length/capacity of the buffer "out". If 0, the function returns the required length including null terminator.
|
||
// return: -1 if invalid, or if outLen is 0 the required buffer length.
|
||
DQN_FILE_SCOPE i32 DqnWin32_UTF8ToWChar(const char *const in, wchar_t *const out, const i32 outLen);
|
||
DQN_FILE_SCOPE i32 DqnWin32_WCharToUTF8(const wchar_t *const in, char *const out, const i32 outLen);
|
||
|
||
// "width" and "height" are optional and won't be used if not given by user.
|
||
// width & height: Pass in a pointer for function to fill out.
|
||
DQN_FILE_SCOPE void DqnWin32_GetClientDim (const HWND window, LONG *const width, LONG *const height);
|
||
DQN_FILE_SCOPE void DqnWin32_GetRectDim (const RECT rect, LONG *const width, LONG *const height);
|
||
|
||
// Displays error in the format <errorPrefix>: <Win32 Error Message> in a Win32 Dialog Box.
|
||
// errorPrefix: The message before the Win32 error, can be nullptr
|
||
DQN_FILE_SCOPE void DqnWin32_DisplayLastError (const char *const errorPrefix);
|
||
|
||
// Asimilar to DqnWin32_DisplayLastError() a particular error can be specified in a Win32 Dialog Box.
|
||
DQN_FILE_SCOPE void DqnWin32_DisplayErrorCode (const DWORD error, const char *const errorPrefix);
|
||
|
||
// Output text to the debug console. For visual studio this is the output window and not the console.
|
||
// ...: Variable args alike printf, powered by stb_sprintf
|
||
DQN_FILE_SCOPE void DqnWin32_OutputDebugString(const char *const formatStr, ...);
|
||
|
||
// Get the full path of to the current processes executable, and return the char offset in the
|
||
// string to the last backslash, i.e. the directory.
|
||
// buf: Filled with the path to the executable file.
|
||
// return: The offset to the last backslash. -1 if bufLen was not large enough or buf is null.
|
||
DQN_FILE_SCOPE i32 DqnWin32_GetEXEDirectory(char *const buf, const u32 bufLen);
|
||
#endif // DQN_IS_WIN32
|
||
#endif // DQN_PLATFORM_H
|
||
#endif // DQN_PLATFORM_HEADER
|
||
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// #External Code
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
#ifndef DQN_INI_H
|
||
#define DQN_INI_H
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// #DqnIni Public API - Simple INI Config File API v1.1
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
/*
|
||
TODO(doyle): Make my own for fun?
|
||
Public Domain library with thanks to Mattias Gustavsson
|
||
https://github.com/mattiasgustavsson/libs/blob/master/docs/ini.md
|
||
|
||
Examples
|
||
Loading an ini file and retrieving values
|
||
|
||
#define DQN_INI_IMPLEMENTATION
|
||
#include "ini.h"
|
||
#include <stdio.h>
|
||
#include <stdlib.h>
|
||
|
||
int main()
|
||
{
|
||
FILE *fp = fopen("test.ini", "r");
|
||
fseek(fp, 0, SEEK_END);
|
||
int size = ftell(fp);
|
||
fseek(fp, 0, SEEK_SET);
|
||
char *data = (char *)malloc(size + 1);
|
||
fread(data, 1, size, fp);
|
||
data[size] = '\0';
|
||
fclose(fp);
|
||
|
||
DqnIni *ini = DqnIni_Load(data);
|
||
free(data);
|
||
int second_index = DqnIni_FindProperty(ini, DQN_INI_GLOBAL_SECTION, "SecondSetting");
|
||
char const *second = DqnIni_PropertyValue(ini, DQN_INI_GLOBAL_SECTION, second_index);
|
||
int section = DqnIni_FindSection(ini, "MySection");
|
||
int third_index = DqnIni_FindProperty(ini, section, "ThirdSetting");
|
||
char const *third = DqnIni_PropertyValue(ini, section, third_index);
|
||
DqnIni_Destroy(ini);
|
||
|
||
return 0;
|
||
}
|
||
|
||
Creating a new ini file
|
||
#define DQN_INI_IMPLEMENTATION
|
||
#include "ini.h"
|
||
|
||
#include <stdio.h>
|
||
#include <stdlib.h>
|
||
|
||
int main()
|
||
{
|
||
DqnIni *ini = DqnIni_Create();
|
||
DqnIni_PropertyAdd(ini, DQN_INI_GLOBAL_SECTION, "FirstSetting", "Test");
|
||
DqnIni_PropertyAdd(ini, DQN_INI_GLOBAL_SECTION, "SecondSetting", "2");
|
||
int section = DqnIni_SectionAdd(ini, "MySection");
|
||
DqnIni_PropertyAdd(ini, section, "ThirdSetting", "Three");
|
||
|
||
int size = DqnIni_Save(ini, nullptr, 0); // Find the size needed
|
||
char *data = (char *)malloc(size);
|
||
size = DqnIni_Save(ini, data, size); // Actually save the file
|
||
DqnIni_Destroy(ini);
|
||
|
||
FILE *fp = fopen("test.ini", "w");
|
||
fwrite(data, 1, size, fp);
|
||
fclose(fp);
|
||
free(data);
|
||
|
||
return 0;
|
||
}
|
||
*/
|
||
|
||
#define DQN_INI_GLOBAL_SECTION (0)
|
||
#define DQN_INI_NOT_FOUND (-1)
|
||
|
||
typedef struct DqnIni DqnIni;
|
||
|
||
DqnIni *DqnIni_Create(void *memctx);
|
||
DqnIni *DqnIni_Load (char const *data, void *memctx);
|
||
|
||
int DqnIni_Save (DqnIni const *ini, char *data, int size);
|
||
void DqnIni_Destroy(DqnIni *ini);
|
||
|
||
int DqnIni_SectionCount(DqnIni const *ini);
|
||
char const *DqnIni_SectionName (DqnIni const *ini, int section);
|
||
|
||
int DqnIni_PropertyCount(DqnIni const *ini, int section);
|
||
char const *DqnIni_PropertyName (DqnIni const *ini, int section, int property);
|
||
char const *DqnIni_PropertyValue(DqnIni const *ini, int section, int property);
|
||
|
||
int DqnIni_FindSection (DqnIni const *ini, char const *name, int name_length);
|
||
int DqnIni_FindProperty(DqnIni const *ini, int section, char const *name, int name_length);
|
||
|
||
int DqnIni_SectionAdd (DqnIni *ini, char const *name, int length);
|
||
void DqnIni_PropertyAdd (DqnIni *ini, int section, char const *name, int name_length, char const *value, int value_length);
|
||
void DqnIni_SectionRemove (DqnIni *ini, int section);
|
||
void DqnIni_PropertyRemove(DqnIni *ini, int section, int property);
|
||
|
||
void DqnIni_SectionNameSet (DqnIni *ini, int section, char const *name, int length);
|
||
void DqnIni_PropertyNameSet (DqnIni *ini, int section, int property, char const *name, int length);
|
||
void DqnIni_PropertyValueSet(DqnIni *ini, int section, int property, char const *value, int length);
|
||
|
||
/**
|
||
Customization
|
||
-------------
|
||
### Custom memory allocators
|
||
|
||
To store the internal data structures, ini.h needs to do dynamic allocation by
|
||
calling `malloc`. Programs might want to keep track of allocations done, or use
|
||
custom defined pools to allocate memory from. ini.h allows for specifying custom
|
||
memory allocation functions for `malloc` and `free`. This is done with the
|
||
following code:
|
||
|
||
#define DQN_INI_IMPLEMENTATION
|
||
#define DQN_INI_MALLOC( ctx, size ) ( my_custom_malloc( ctx, size ) )
|
||
#define DQN_INI_FREE( ctx, ptr ) ( my_custom_free( ctx, ptr ) )
|
||
#include "ini.h"
|
||
|
||
where `my_custom_malloc` and `my_custom_free` are your own memory
|
||
allocation/deallocation functions. The `ctx` parameter is an optional parameter
|
||
of type `void*`. When `DqnIni_Create` or `DqnIni_Load` is called, you can pass
|
||
in a `memctx` parameter, which can be a pointer to anything you like, and which
|
||
will be passed through as the `ctx` parameter to every
|
||
`DQN_INI_MALLOC`/`DQN_INI_FREE` call. For example, if you are doing memory
|
||
tracking, you can pass a pointer to your tracking data as `memctx`, and in your
|
||
custom allocation/deallocation function, you can cast the `ctx` param back to
|
||
the right type, and access the tracking data.
|
||
|
||
If no custom allocator is defined, ini.h will default to `malloc` and `free`
|
||
from the C runtime library.
|
||
|
||
### Custom C runtime function
|
||
The library makes use of three additional functions from the C runtime library,
|
||
and for full flexibility, it allows you to substitute them for your own. Here's
|
||
an example:
|
||
|
||
#define DQN_INI_IMPLEMENTATION
|
||
#define DQN_INI_MEMCPY( dst, src, cnt ) ( my_memcpy_func( dst, src, cnt ) )
|
||
#define DQN_INI_STRLEN( s ) ( my_strlen_func( s ) )
|
||
#define DQN_INI_STRICMP( s1, s2 ) ( my_stricmp_func( s1, s2 ) )
|
||
#include "ini.h"
|
||
|
||
If no custom function is defined, ini.h will default to the C runtime library equivalent.
|
||
|
||
|
||
DqnIni_Create
|
||
----------
|
||
|
||
DqnIni* DqnIni_Create( void* memctx )
|
||
|
||
Instantiates a new, empty ini structure, which can be manipulated with other API
|
||
calls, to fill it with data. To save it out to an ini-file string, use
|
||
`DqnIni_Save`. When no longer needed, it can be destroyed by calling
|
||
`DqnIni_Destroy`. `memctx` is a pointer to user defined data which will be
|
||
passed through to the custom DQN_INI_MALLOC/DQN_INI_FREE calls. It can be nullptr
|
||
if no user defined data is needed.
|
||
|
||
|
||
DqnIni_Load
|
||
--------
|
||
|
||
DqnIni* DqnIni_Load( char const* data, void* memctx )
|
||
|
||
Parse the zero-terminated string `data` containing an ini-file, and create a new
|
||
DqnIni instance containing the data. The instance can be manipulated with
|
||
other API calls to enumerate sections/properties and retrieve values. When no
|
||
longer needed, it can be destroyed by calling `DqnIni_Destroy`. `memctx` is
|
||
a pointer to user defined data which will be passed through to the custom
|
||
DQN_INI_MALLOC/DQN_INI_FREE calls. It can be nullptr if no user defined data is
|
||
needed.
|
||
|
||
|
||
DqnIni_Save
|
||
--------
|
||
|
||
int DqnIni_Save( DqnIni const* ini, char* data, int size )
|
||
|
||
Saves an ini structure as a zero-terminated ini-file string, into the specified
|
||
buffer. Returns the number of bytes written, including the zero terminator. If
|
||
`data` is nullptr, nothing is written, but `DqnIni_Save` still returns the number
|
||
of bytes it would have written. If the size of `data`, as specified in the
|
||
`size` parameter, is smaller than that required, only part of the ini-file
|
||
string will be written. `DqnIni_Save` still returns the number of bytes it
|
||
would have written had the buffer been large enough.
|
||
|
||
DqnIni_Destroy
|
||
-----------
|
||
|
||
void DqnIni_Destroy( DqnIni* ini )
|
||
|
||
Destroy an `DqnIni` instance created by calling `DqnIni_Load` or
|
||
`DqnIni_Create`, releasing the memory allocated by it. No further API calls are
|
||
valid on an `DqnIni` instance after calling `DqnIni_Destroy` on it.
|
||
|
||
|
||
DqnIni_SectionCount
|
||
-----------------
|
||
|
||
int DqnIni_SectionCount( DqnIni const* ini )
|
||
|
||
Returns the number of sections in an ini file. There's at least one section in
|
||
an ini file (the global section), but there can be many more, each specified in
|
||
the file by the section name wrapped in square brackets [ ].
|
||
|
||
|
||
DqnIni_SectionName
|
||
----------------
|
||
|
||
char const* DqnIni_SectionName( DqnIni const* ini, int section )
|
||
|
||
Returns the name of the section with the specified index. `section` must be
|
||
non-negative and less than the value returned by `DqnIni_SectionCount`, or
|
||
`DqnIni_SectionName` will return nullptr. The defined constant
|
||
`DQN_INI_GLOBAL_SECTION` can be used to indicate the global section.
|
||
|
||
|
||
DqnIni_PropertyCount
|
||
------------------
|
||
|
||
int DqnIni_PropertyCount( DqnIni const* ini, int section )
|
||
|
||
Returns the number of properties belonging to the section with the specified
|
||
index. `section` must be non-negative and less than the value returned by
|
||
`DqnIni_SectionCount`, or `DqnIni_SectionName` will return 0. The defined
|
||
constant `DQN_INI_GLOBAL_SECTION` can be used to indicate the global section.
|
||
Properties are declared in the ini-file on he format `name=value`.
|
||
|
||
|
||
DqnIni_PropertyName
|
||
-----------------
|
||
|
||
char const* DqnIni_PropertyName( DqnIni const* ini, int section, int property )
|
||
|
||
Returns the name of the property with the specified index `property` in the
|
||
section with the specified index `section`. `section` must be non-negative and
|
||
less than the value returned by `DqnIni_SectionCount`, and `property` must be
|
||
non-negative and less than the value returned by `DqnIni_PropertyCount`, or
|
||
`DqnIni_PropertyName` will return nullptr. The defined constant
|
||
`DQN_INI_GLOBAL_SECTION` can be used to indicate the global section.
|
||
|
||
|
||
DqnIni_PropertyValue
|
||
------------------
|
||
|
||
char const* DqnIni_PropertyValue( DqnIni const* ini, int section, int property )
|
||
|
||
Returns the value of the property with the specified index `property` in the
|
||
section with the specified index `section`. `section` must be non-negative and
|
||
less than the value returned by `DqnIni_SectionCount`, and `property` must be
|
||
non-negative and less than the value returned by `DqnIni_PropertyCount`, or
|
||
`DqnIni_PropertyValue` will return nullptr. The defined constant
|
||
`DQN_INI_GLOBAL_SECTION` can be used to indicate the global section.
|
||
|
||
|
||
DqnIni_FindSection
|
||
----------------
|
||
|
||
int DqnIni_FindSection( DqnIni const* ini, char const* name, int name_length )
|
||
|
||
Finds the section with the specified name, and returns its index. `name_length`
|
||
specifies the number of characters in `name`, which does not have to be
|
||
zero-terminated. If `name_length` is zero, the length is determined
|
||
automatically, but in this case `name` has to be zero-terminated. If no section
|
||
with the specified name could be found, the value `DQN_INI_NOT_FOUND` is
|
||
returned.
|
||
|
||
|
||
DqnIni_FindProperty
|
||
-----------------
|
||
|
||
int DqnIni_FindProperty( DqnIni const* ini, int section, char const* name, int name_length )
|
||
|
||
Finds the property with the specified name, within the section with the
|
||
specified index, and returns the index of the property. `name_length` specifies
|
||
the number of characters in `name`, which does not have to be zero-terminated.
|
||
If `name_length` is zero, the length is determined automatically, but in this
|
||
case `name` has to be zero-terminated. If no property with the specified name
|
||
could be found within the specified section, the value `DQN_INI_NOT_FOUND` is
|
||
returned. `section` must be non-negative and less than the value returned by
|
||
`DqnIni_SectionCount`, or `DqnIni_FindProperty` will return
|
||
`DQN_INI_NOT_FOUND`. The defined constant `DQN_INI_GLOBAL_SECTION` can be used
|
||
to indicate the global section.
|
||
|
||
|
||
DqnIni_SectionAdd
|
||
---------------
|
||
|
||
int DqnIni_SectionAdd( DqnIni* ini, char const* name, int length )
|
||
|
||
Adds a section with the specified name, and returns the index it was added at.
|
||
There is no check done to see if a section with the specified name already
|
||
exists - multiple sections of the same name are allowed. `length` specifies the
|
||
number of characters in `name`, which does not have to be zero-terminated. If
|
||
`length` is zero, the length is determined automatically, but in this case
|
||
`name` has to be zero-terminated.
|
||
|
||
|
||
DqnIni_PropertyAdd
|
||
----------------
|
||
|
||
void DqnIni_PropertyAdd( DqnIni* ini, int section, char const* name, int name_length, char const* value, int value_length )
|
||
|
||
Adds a property with the specified name and value to the specified section, and returns the index it was added at. There is no check done to see if a property
|
||
with the specified name already exists - multiple properties of the same name
|
||
are allowed. `name_length` and `value_length` specifies the number of characters
|
||
in `name` and `value`, which does not have to be zero-terminated. If
|
||
`name_length` or `value_length` is zero, the length is determined automatically,
|
||
but in this case `name`/`value` has to be zero-terminated. `section` must be
|
||
non-negative and less than the value returned by `DqnIni_SectionCount`, or the
|
||
property will not be added. The defined constant `DQN_INI_GLOBAL_SECTION` can be
|
||
used to indicate the global section.
|
||
|
||
|
||
DqnIni_SectionRemove
|
||
------------------
|
||
|
||
void DqnIni_SectionRemove( DqnIni* ini, int section )
|
||
|
||
Removes the section with the specified index, and all properties within it.
|
||
`section` must be non-negative and less than the value returned by
|
||
`DqnIni_SectionCount`. The defined constant `DQN_INI_GLOBAL_SECTION` can be
|
||
used to indicate the global section. Note that removing a section will shuffle
|
||
section indices, so that section indices you may have stored will no longer
|
||
indicate the same section as it did before the remove. Use the find functions to
|
||
update your indices.
|
||
|
||
|
||
DqnIni_PropertyRemove
|
||
-------------------
|
||
|
||
void DqnIni_PropertyRemove( DqnIni* ini, int section, int property )
|
||
|
||
Removes the property with the specified index from the specified section.
|
||
`section` must be non-negative and less than the value returned by
|
||
`DqnIni_SectionCount`, and `property` must be non-negative and less than the
|
||
value returned by `DqnIni_PropertyCount`. The defined constant
|
||
`DQN_INI_GLOBAL_SECTION` can be used to indicate the global section. Note that
|
||
removing a property will shuffle property indices within the specified section,
|
||
so that property indices you may have stored will no longer indicate the same
|
||
property as it did before the remove. Use the find functions to update your
|
||
indices.
|
||
|
||
|
||
DqnIni_SectionNameSet
|
||
--------------------
|
||
|
||
void DqnIni_SectionNameSet( DqnIni* ini, int section, char const* name, int length )
|
||
|
||
Change the name of the section with the specified index. `section` must be
|
||
non-negative and less than the value returned by `DqnIni_SectionCount`. The
|
||
defined constant `DQN_INI_GLOBAL_SECTION` can be used to indicate the global
|
||
section. `length` specifies the number of characters in `name`, which does not
|
||
have to be zero-terminated. If `length` is zero, the length is determined
|
||
automatically, but in this case `name` has to be zero-terminated.
|
||
|
||
|
||
DqnIni_PropertyNameSet
|
||
---------------------
|
||
|
||
void DqnIni_PropertyNameSet( DqnIni* ini, int section, int property, char const* name, int length )
|
||
|
||
Change the name of the property with the specified index in the specified
|
||
section. `section` must be non-negative and less than the value returned by
|
||
`DqnIni_SectionCount`, and `property` must be non-negative and less than the
|
||
value returned by `DqnIni_PropertyCount`. The defined constant
|
||
`DQN_INI_GLOBAL_SECTION` can be used to indicate the global section. `length`
|
||
specifies the number of characters in `name`, which does not have to be
|
||
zero-terminated. If `length` is zero, the length is determined automatically,
|
||
but in this case `name` has to be zero-terminated.
|
||
|
||
|
||
DqnIni_PropertyValueSet
|
||
----------------------
|
||
|
||
void DqnIni_PropertyValueSet( DqnIni* ini, int section, int property, char const* value, int length )
|
||
|
||
Change the value of the property with the specified index in the specified
|
||
section. `section` must be non-negative and less than the value returned by
|
||
`DqnIni_SectionCount`, and `property` must be non-negative and less than the
|
||
value returned by `DqnIni_PropertyCount`. The defined constant
|
||
`DQN_INI_GLOBAL_SECTION` can be used to indicate the global section. `length`
|
||
specifies the number of characters in `value`, which does not have to be
|
||
zero-terminated. If `length` is zero, the length is determined automatically,
|
||
but in this case `value` has to be zero-terminated.
|
||
|
||
**/
|
||
#endif // DQN_INI_H
|
||
|
||
#ifndef STB_SPRINTF_H_INCLUDE
|
||
#define STB_SPRINTF_H_INCLUDE
|
||
#define STB_SPRINTF_DECORATE(name) Dqn_##name
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// #DqnSprintf Public API - Cross-platform Sprintf Implementation
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
/*
|
||
Public Domain library originally written by Jeff Roberts at RAD Game Tools
|
||
- 2015/10/20. Hereby placed in public domain.
|
||
STB_Sprintf renamed to Dqn_Sprintf
|
||
|
||
FLOATS/DOUBLES:
|
||
===============
|
||
This code uses a internal float->ascii conversion method that uses doubles with
|
||
error correction (double-doubles, for ~105 bits of precision). This conversion
|
||
is round-trip perfect - that is, an atof of the values output here will give you
|
||
the bit-exact double back.
|
||
|
||
One difference is that our insignificant digits will be different than with MSVC
|
||
or GCC (but they don't match each other either). We also don't attempt to find
|
||
the minimum length matching float (pre-MSVC15 doesn't either).
|
||
|
||
If you don't need float or doubles at all, define STB_SPRINTF_NOFLOAT and you'll
|
||
save 4K of code space.
|
||
|
||
64-BIT INTS:
|
||
============
|
||
This library also supports 64-bit integers and you can use MSVC style or GCC
|
||
style indicators (%I64d or %lld). It supports the C99 specifiers for size_t and
|
||
ptr_diff_t (%jd %zd) as well.
|
||
|
||
EXTRAS:
|
||
=======
|
||
Like some GCCs, for integers and floats, you can use a ' (single quote)
|
||
specifier and commas will be inserted on the thousands: "%'d" on 12345 would
|
||
print 12,345.
|
||
|
||
For integers and floats, you can use a "$" specifier and the number will be
|
||
converted to float and then divided to get kilo, mega, giga or tera and then
|
||
printed, so "%$d" 1000 is "1.0 k", "%$.2d" 2536000 is "2.53 M", etc. For byte
|
||
values, use two $:s, like "%$$d" to turn 2536000 to "2.42 Mi". If you prefer
|
||
JEDEC suffixes to SI ones, use three $:s: "%$$$d" -> "2.42 M". To remove the
|
||
space between the number and the suffix, add "_" specifier: "%_$d" -> "2.53M".
|
||
|
||
In addition to octal and hexadecimal conversions, you can print integers in
|
||
binary: "%b" for 256 would print 100.
|
||
*/
|
||
|
||
#if defined(__has_feature)
|
||
#if __has_feature(address_sanitizer)
|
||
#define STBI__ASAN __attribute__((no_sanitize("address")))
|
||
#endif
|
||
#endif
|
||
|
||
#ifndef STBI__ASAN
|
||
#define STBI__ASAN
|
||
#endif
|
||
|
||
#ifdef STB_SPRINTF_STATIC
|
||
#define STBSP__PUBLICDEC static
|
||
#define STBSP__PUBLICDEF static STBI__ASAN
|
||
#else
|
||
#ifdef __cplusplus
|
||
#define STBSP__PUBLICDEC extern "C"
|
||
#define STBSP__PUBLICDEF extern "C" STBI__ASAN
|
||
#else
|
||
#define STBSP__PUBLICDEC extern
|
||
#define STBSP__PUBLICDEF STBI__ASAN
|
||
#endif
|
||
#endif
|
||
|
||
#include <stdarg.h> // for va_list()
|
||
|
||
#ifndef STB_SPRINTF_MIN
|
||
#define STB_SPRINTF_MIN 512 // how many characters per callback
|
||
#endif
|
||
|
||
#ifndef STB_SPRINTF_DECORATE
|
||
#define STB_SPRINTF_DECORATE(name) stbsp_##name // define this before including if you want to change the names
|
||
#endif
|
||
|
||
// Convert a va_list arg list into a buffer. vsnprintf always returns a zero-terminated string (unlike regular snprintf).
|
||
// return: The number of characters copied into the buffer
|
||
STBSP__PUBLICDEF int STB_SPRINTF_DECORATE(vsprintf) (char *buf, char const *fmt, va_list va);
|
||
STBSP__PUBLICDEF int STB_SPRINTF_DECORATE(vsnprintf)(char *buf, int count, char const *fmt, va_list va);
|
||
|
||
// Write format string to buffer. It always writes the whole string and appends a null.
|
||
// return: The number of characters copied into the buffer not including the null terminator.
|
||
STBSP__PUBLICDEF int STB_SPRINTF_DECORATE(sprintf) (char *buf, char const *fmt, ...);
|
||
|
||
// snprintf() always returns a zero-terminated string (unlike regular snprintf).
|
||
// return: The number of characters copied into the buffer not including the null terminator.
|
||
STBSP__PUBLICDEF int STB_SPRINTF_DECORATE(snprintf)(char *buf, int count, char const *fmt, ...);
|
||
|
||
// Convert into a buffer, calling back every STB_SPRINTF_MIN chars.
|
||
// Your callback can then copy the chars out, print them or whatever.
|
||
// This function is actually the workhorse for everything else.
|
||
// The buffer you pass in must hold at least STB_SPRINTF_MIN characters.
|
||
// You return the next buffer to use or 0 to stop converting
|
||
typedef char *STBSP_SPRINTFCB(char *buf, void *user, int len);
|
||
STBSP__PUBLICDEF int STB_SPRINTF_DECORATE(vsprintfcb)(STBSP_SPRINTFCB* callback, void *user, char *buf, char const *fmt, va_list va);
|
||
|
||
// Set the comma and period characters to use.
|
||
STBSP__PUBLICDEF void STB_SPRINTF_DECORATE(set_separators)(char comma, char period);
|
||
|
||
#endif // STB_SPRINTF_H_INCLUDE
|
||
|
||
#ifdef DQN_IMPLEMENTATION
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
//
|
||
// DQN_IMPLEMENTATION
|
||
//
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
#include <math.h> // TODO(doyle): For trigonometry functions (for now)
|
||
#include <stdlib.h> // For calloc, malloc, free
|
||
#include <stdio.h> // For printf
|
||
|
||
// NOTE: STB_SPRINTF is included when DQN_IMPLEMENTATION defined
|
||
// #define STB_SPRINTF_IMPLEMENTATION
|
||
|
||
// NOTE: DQN_INI_IMPLEMENTATION modified to be included when DQN_IMPLEMENTATION defined
|
||
// #define DQN_INI_IMPLEMENTATION
|
||
#define DQN_INI_STRLEN(s) DqnStr_Len(s)
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// #DqnAssert Implementation
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
DQN_FILE_SCOPE bool DqnAssertInternal(const bool result, const char *const file, const i32 lineNum,
|
||
const char *const expr, const char *const msg, ...)
|
||
{
|
||
if (!(result))
|
||
{
|
||
const char *const formatStrNoMsg = "DqnAssert() failed: %s|%d| (%s)\n";
|
||
const char *const formatStrWithMsg = "DqnAssert() failed: %s|%d| (%s): %s\n";
|
||
const char *const formatStr = (msg) ? formatStrWithMsg : formatStrNoMsg;
|
||
|
||
char userMsg[2048] = {};
|
||
if (msg)
|
||
{
|
||
va_list argList;
|
||
va_start(argList, msg);
|
||
{
|
||
u32 numCopied = Dqn_vsprintf(userMsg, msg, argList);
|
||
DQN_ASSERT_HARD(numCopied < DQN_ARRAY_COUNT(userMsg));
|
||
}
|
||
va_end(argList);
|
||
}
|
||
|
||
#ifdef DQN_WIN32_PLATFORM
|
||
DqnWin32_OutputDebugString(formatStr, file, lineNum, expr, userMsg);
|
||
#else
|
||
printf(formatStr, file, lineNum, expr, userMsg);
|
||
#endif
|
||
|
||
(*((i32 *)0)) = 0;
|
||
}
|
||
return result;
|
||
}
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// #DqnMemory Implementation
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// NOTE: All memory allocations in dqn.h go through these functions. So they can
|
||
// be rerouted fairly easily especially for platform specific mallocs.
|
||
DQN_FILE_SCOPE void *DqnMem_Alloc(const size_t size)
|
||
{
|
||
void *result = malloc(size);
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE void *DqnMem_Calloc(const size_t size)
|
||
{
|
||
void *result = calloc(1, size);
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE void DqnMem_Clear(void *const memory, const u8 clearValue, const size_t size)
|
||
{
|
||
if (memory) memset(memory, clearValue, size);
|
||
}
|
||
|
||
DQN_FILE_SCOPE void *DqnMem_Realloc(void *memory, const size_t newSize)
|
||
{
|
||
void *result = realloc(memory, newSize);
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE void DqnMem_Free(void *memory)
|
||
{
|
||
if (memory) free(memory);
|
||
}
|
||
|
||
DQN_FILE_SCOPE void DqnMem_Copy(u8 *const dest, u8 *const src, const i64 numBytesToCopy)
|
||
{
|
||
for (auto i = 0; i < numBytesToCopy; i++)
|
||
dest[i] = src[i];
|
||
}
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// #DqnMemAPIInternal Implementation
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
FILE_SCOPE void DqnMemAPIInternal_ValidateRequest(DqnMemAPI::Request request)
|
||
{
|
||
DQN_ASSERT_HARD(request.type != DqnMemAPI::Type::Invalid);
|
||
|
||
switch(request.type)
|
||
{
|
||
case DqnMemAPI::Type::Alloc:
|
||
{
|
||
DQN_ASSERT_HARD(request.requestSize > 0);
|
||
}
|
||
break;
|
||
|
||
case DqnMemAPI::Type::Realloc:
|
||
{
|
||
DQN_ASSERT_HARD(request.oldSize > 0);
|
||
DQN_ASSERT_HARD(request.requestSize > 0);
|
||
DQN_ASSERT_HARD(request.oldMemPtr);
|
||
}
|
||
break;
|
||
|
||
case DqnMemAPI::Type::Free:
|
||
{
|
||
// nothing to validate
|
||
}
|
||
break;
|
||
|
||
default:
|
||
{
|
||
DQN_ASSERT_HARD(DQN_INVALID_CODE_PATH);
|
||
}
|
||
break;
|
||
}
|
||
}
|
||
|
||
FILE_SCOPE u8 *DqnMemAPIInternal_HeapAllocatorCallback(DqnMemAPI::Request request)
|
||
{
|
||
DQN_ASSERT_HARD(!request.userContext);
|
||
u8 *result = nullptr;
|
||
|
||
DqnMemAPIInternal_ValidateRequest(request);
|
||
switch(request.type)
|
||
{
|
||
case DqnMemAPI::Type::Alloc:
|
||
{
|
||
if (request.clearToZero)
|
||
{
|
||
result = (u8 *)DqnMem_Calloc(request.requestSize);
|
||
}
|
||
else
|
||
{
|
||
result = (u8 *)DqnMem_Alloc(request.requestSize);
|
||
}
|
||
}
|
||
break;
|
||
|
||
case DqnMemAPI::Type::Realloc:
|
||
{
|
||
result = (u8 *)DqnMem_Realloc(request.oldMemPtr, request.newRequestSize);
|
||
}
|
||
break;
|
||
|
||
case DqnMemAPI::Type::Free:
|
||
{
|
||
DqnMem_Free(request.ptrToFree);
|
||
}
|
||
break;
|
||
|
||
default:
|
||
{
|
||
DQN_ASSERT_HARD(DQN_INVALID_CODE_PATH);
|
||
}
|
||
break;
|
||
}
|
||
|
||
return result;
|
||
}
|
||
|
||
FILE_SCOPE u8 *DqnMemAPIInternal_StackAllocatorCallback(DqnMemAPI::Request info)
|
||
{
|
||
DQN_ASSERT_HARD(info.userContext);
|
||
DqnMemStack *const stack = static_cast<DqnMemStack *>(info.userContext);
|
||
u8 *result = nullptr;
|
||
|
||
DqnMemAPIInternal_ValidateRequest(info);
|
||
switch(info.type)
|
||
{
|
||
case DqnMemAPI::Type::Alloc:
|
||
{
|
||
result = (u8 *)stack->Push(info.requestSize);
|
||
|
||
if (info.clearToZero)
|
||
{
|
||
DqnMem_Clear(result, 0, info.requestSize);
|
||
}
|
||
}
|
||
break;
|
||
|
||
case DqnMemAPI::Type::Realloc:
|
||
case DqnMemAPI::Type::Free:
|
||
{
|
||
// IMPORTANT: This is a _naive_ realloc scheme for stack allocation.
|
||
DqnMemStack::Block *block = stack->block;
|
||
u8 *currUsagePtr = (u8 *)(block->memory + block->used);
|
||
u8 *checkPtr = currUsagePtr - DQN_ALIGN_POW_N(info.oldSize, stack->byteAlign);
|
||
|
||
if (info.type == DqnMemAPI::Type::Realloc)
|
||
{
|
||
// Last allocation, can safely allocate the remainder space.
|
||
if (checkPtr == (u8 *)info.oldMemPtr || info.oldMemPtr == block->memory)
|
||
{
|
||
size_t remainingBytesToAlloc = info.newRequestSize - info.oldSize;
|
||
DQN_ASSERT_HARD(remainingBytesToAlloc > 0);
|
||
|
||
bool enoughSpace =
|
||
(currUsagePtr + remainingBytesToAlloc) < (block->memory + block->size);
|
||
|
||
if (enoughSpace)
|
||
{
|
||
result = (u8 *)info.oldMemPtr;
|
||
u8 *startPtr = (u8 *)stack->Push(remainingBytesToAlloc);
|
||
DQN_ASSERT_HARD(stack->block == block);
|
||
|
||
if (info.clearToZero)
|
||
{
|
||
DqnMem_Clear(startPtr, 0, remainingBytesToAlloc);
|
||
}
|
||
|
||
return result;
|
||
}
|
||
|
||
// Else, last allocation but not enough space in block. Create a new block and
|
||
// copy
|
||
DqnMemStack::Block *newBlock =
|
||
stack->AllocateCompatibleBlock(info.newRequestSize, info.clearToZero);
|
||
if (newBlock)
|
||
{
|
||
DqnMem_Copy(result, (u8 *)info.oldMemPtr, info.oldSize);
|
||
stack->Pop(info.oldMemPtr, info.oldSize);
|
||
|
||
stack->AttachBlock(block);
|
||
result = stack->block->memory;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
// NOTE: Lost memory when this case occurs.
|
||
result = (u8 *)stack->Push(info.newRequestSize);
|
||
|
||
if (result)
|
||
{
|
||
DqnMem_Copy(result, (u8 *)info.oldMemPtr, info.oldSize);
|
||
}
|
||
}
|
||
|
||
return result;
|
||
}
|
||
else
|
||
{
|
||
if (checkPtr == (u8 *)info.oldMemPtr)
|
||
stack->Pop(info.oldMemPtr, info.oldSize);
|
||
}
|
||
}
|
||
break;
|
||
|
||
default:
|
||
{
|
||
DQN_ASSERT_HARD(DQN_INVALID_CODE_PATH);
|
||
}
|
||
break;
|
||
}
|
||
|
||
return result;
|
||
}
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// #DqnMemAPI Implementation
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
DqnMemAPI::Request DqnMemAPI::RequestRealloc(const DqnMemAPI memAPI, void *const oldMemPtr,
|
||
const size_t oldSize, const size_t newSize)
|
||
{
|
||
DqnMemAPI::Request info = {};
|
||
info.type = Type::Realloc;
|
||
info.userContext = memAPI.userContext;
|
||
info.newRequestSize = newSize;
|
||
info.oldMemPtr = oldMemPtr;
|
||
info.oldSize = oldSize;
|
||
|
||
return info;
|
||
}
|
||
|
||
DqnMemAPI::Request DqnMemAPI::RequestAlloc(const DqnMemAPI memAPI, const size_t size,
|
||
const bool clearToZero = true)
|
||
{
|
||
DqnMemAPI::Request result = {};
|
||
result.type = DqnMemAPI::Type::Alloc;
|
||
result.userContext = memAPI.userContext;
|
||
result.clearToZero = clearToZero;
|
||
result.requestSize = size;
|
||
return result;
|
||
}
|
||
|
||
DqnMemAPI::Request DqnMemAPI::RequestFree(const DqnMemAPI memAPI, void *const ptrToFree,
|
||
const size_t sizeToFree)
|
||
{
|
||
DqnMemAPI::Request result = {};
|
||
result.type = DqnMemAPI::Type::Free;
|
||
result.userContext = memAPI.userContext;
|
||
result.ptrToFree = ptrToFree;
|
||
result.sizeToFree = sizeToFree;
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE DqnMemAPI DqnMemAPI_HeapAllocator()
|
||
{
|
||
DqnMemAPI result = {0};
|
||
result.callback = DqnMemAPIInternal_HeapAllocatorCallback;
|
||
result.userContext = nullptr;
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE DqnMemAPI DqnMemAPI_StackAllocator(DqnMemStack *const stack)
|
||
{
|
||
DQN_ASSERT_HARD(stack);
|
||
DqnMemAPI result = {0};
|
||
result.callback = DqnMemAPIInternal_StackAllocatorCallback;
|
||
result.userContext = stack;
|
||
return result;
|
||
}
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// #DqnMemStackInternal Implementation
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
DQN_FILE_SCOPE DqnMemStack::Block *DqnMemStackInternal_AllocateBlock(u32 byteAlign, size_t size,
|
||
const bool zeroClear,
|
||
const DqnMemAPI &memAPI)
|
||
{
|
||
if (!memAPI.callback) return nullptr;
|
||
|
||
size_t alignedSize = DQN_ALIGN_POW_N(size, byteAlign);
|
||
size_t totalSize = alignedSize + sizeof(DqnMemStack::Block) + (byteAlign -1);
|
||
|
||
// NOTE(doyle): Total size includes another (byteAlign-1) since we also want
|
||
// to align the base pointer to memory that we receive.
|
||
DqnMemAPI::Request request = DqnMemAPI::RequestAlloc(memAPI, totalSize, zeroClear);
|
||
auto *result = (DqnMemStack::Block *)memAPI.callback(request);
|
||
if (!result) return nullptr;
|
||
|
||
result->memory = (u8 *)DQN_ALIGN_POW_N((u8 *)result + sizeof(*result), byteAlign);
|
||
result->size = alignedSize;
|
||
result->used = 0;
|
||
result->prevBlock = nullptr;
|
||
return result;
|
||
}
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// #DqnMemStack Initialisation Implementation
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
DQN_FILE_SCOPE bool DqnMemStack::InitWithFixedMem(u8 *const mem, const size_t memSize,
|
||
const u32 byteAlign_)
|
||
{
|
||
// TODO(doyle): Logging
|
||
if (!mem) return false;
|
||
|
||
if (!DQN_ASSERT_MSG(
|
||
memSize > sizeof(DqnMemStack::Block),
|
||
"memSize is insufficient to initialise a memstack, memSize: %d, requiredSize: %d",
|
||
memSize, sizeof(DqnMemStack::Block)))
|
||
{
|
||
return false;
|
||
}
|
||
|
||
this->block = (DqnMemStack::Block *)mem;
|
||
this->block->memory = mem + sizeof(DqnMemStack::Block);
|
||
this->block->used = 0;
|
||
this->block->size = memSize - sizeof(DqnMemStack::Block);
|
||
this->block->prevBlock = nullptr;
|
||
this->memAPI = {};
|
||
this->flags = (DqnMemStack::Flag::IsFixedMemoryFromUser | DqnMemStack::Flag::IsNotExpandable);
|
||
|
||
const u32 DEFAULT_ALIGNMENT = 4;
|
||
this->tempRegionCount = 0;
|
||
this->byteAlign = (byteAlign_ == 0) ? DEFAULT_ALIGNMENT : byteAlign_;
|
||
|
||
DQN_ASSERT(!this->block->prevBlock);
|
||
return true;
|
||
}
|
||
|
||
DQN_FILE_SCOPE bool DqnMemStack::InitWithFixedSize(size_t size, const bool zeroClear,
|
||
const u32 byteAlign_, const DqnMemAPI memAPI_)
|
||
{
|
||
bool result = this->Init(size, zeroClear, byteAlign_, memAPI_);
|
||
if (result)
|
||
{
|
||
this->flags |= DqnMemStack::Flag::IsNotExpandable;
|
||
DQN_ASSERT(!this->block->prevBlock);
|
||
return true;
|
||
}
|
||
|
||
return false;
|
||
}
|
||
|
||
DQN_FILE_SCOPE bool DqnMemStack::Init(size_t size, const bool zeroClear, const u32 byteAlign_, const DqnMemAPI memAPI_)
|
||
{
|
||
if (!this || size <= 0) return false;
|
||
if (!DQN_ASSERT_MSG(!this->block, "MemStack has pre-existing block already attached"))
|
||
return false;
|
||
|
||
this->block = DqnMemStackInternal_AllocateBlock(byteAlign_, size, zeroClear, memAPI_);
|
||
if (!DQN_ASSERT_MSG(this->block, "MemStack failed to allocate block, not enough memory"))
|
||
return false;
|
||
|
||
this->tempRegionCount = 0;
|
||
this->byteAlign = byteAlign_;
|
||
this->flags = 0;
|
||
this->memAPI = memAPI_;
|
||
DQN_ASSERT(!this->block->prevBlock);
|
||
return true;
|
||
}
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// #DqnMemStack Push/Pop/Free Implementation
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
DQN_FILE_SCOPE void *DqnMemStack::Push(size_t size)
|
||
{
|
||
if (size == 0) return nullptr;
|
||
|
||
size_t alignedSize = DQN_ALIGN_POW_N(size, this->byteAlign);
|
||
if (!this->block ||
|
||
(this->block->used + alignedSize) > this->block->size)
|
||
{
|
||
size_t newBlockSize;
|
||
// TODO(doyle): Allocate block size based on the aligned size or
|
||
// a minimum block size? Not allocate based on the current block
|
||
// size
|
||
if (this->block) newBlockSize = DQN_MAX(alignedSize, this->block->size);
|
||
else newBlockSize = alignedSize;
|
||
|
||
DqnMemStack::Block *newBlock = this->AllocateCompatibleBlock(newBlockSize, true);
|
||
if (newBlock)
|
||
{
|
||
bool blockAttachResult = this->AttachBlock(newBlock);
|
||
// IMPORTANT(doyle): This should be impossible, considering that
|
||
// AllocateCompatibleBlock checks the preconditions that the new
|
||
// block should be able to be attached.
|
||
|
||
// But if we somehow reach this, we need to free the block
|
||
// otherwise memory is leaked.
|
||
DQN_ASSERT_HARD(blockAttachResult);
|
||
}
|
||
else
|
||
{
|
||
// TODO: Better notifying to user, out of space in stack OR stack
|
||
// is configured such that new blocks are not allowed.
|
||
return nullptr;
|
||
}
|
||
}
|
||
|
||
u8 *currPointer = this->block->memory + this->block->used;
|
||
u8 *alignedResult = (u8 *)DQN_ALIGN_POW_N(currPointer, this->byteAlign);
|
||
size_t alignmentOffset = (size_t)(alignedResult - currPointer);
|
||
|
||
// NOTE(doyle): Since all stack can't change alignment once they've been
|
||
// initialised and that the base memory ptr is already aligned, then all
|
||
// subsequent allocations should also be aligned automatically.
|
||
// TODO(doyle): In the future, do we want to allow arbitrary alignment PER
|
||
// allocation, not per MemStack?
|
||
DQN_ASSERT_HARD(alignmentOffset == 0);
|
||
|
||
void *result = alignedResult;
|
||
this->block->used += (alignedSize + alignmentOffset);
|
||
DQN_ASSERT_HARD(this->block->used <= this->block->size);
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE bool DqnMemStack::Pop(void *const ptr, size_t size)
|
||
{
|
||
if (!this->block) return false;
|
||
|
||
u8 *currPtr = this->block->memory + this->block->used;
|
||
if (DQN_ASSERT_MSG((u8 *)ptr >= this->block->memory && ptr < currPtr,
|
||
"'ptr' to pop does not belong to current memStack attached block"))
|
||
{
|
||
size_t calcSize = (size_t)currPtr - (size_t)ptr;
|
||
size_t sizeAligned = DQN_ALIGN_POW_N(size, this->byteAlign);
|
||
if (DQN_ASSERT_MSG(calcSize == sizeAligned, "'ptr' was not the last item allocated to memStack"))
|
||
{
|
||
this->block->used -= sizeAligned;
|
||
if (this->block->used == 0 && this->block->prevBlock)
|
||
{
|
||
return DQN_ASSERT(this->FreeLastBlock());
|
||
}
|
||
return true;
|
||
}
|
||
}
|
||
|
||
return false;
|
||
}
|
||
|
||
DQN_FILE_SCOPE void DqnMemStack::Free()
|
||
{
|
||
// NOTE(doyle): User is in charge of freeing this memory, so all we need to
|
||
// do is clear the block.
|
||
if (this->flags & DqnMemStack::Flag::IsFixedMemoryFromUser)
|
||
{
|
||
DQN_ASSERT_HARD(!this->block->prevBlock);
|
||
this->ClearCurrBlock(false);
|
||
return;
|
||
}
|
||
|
||
while (this->block)
|
||
this->FreeLastBlock();
|
||
|
||
// After a stack is free, we reset the not expandable flag so that if we
|
||
// allocate on an empty stack it still works.
|
||
this->flags &= ~DqnMemStack::Flag::IsNotExpandable;
|
||
}
|
||
|
||
DQN_FILE_SCOPE bool DqnMemStack::FreeMemBlock(DqnMemStack::Block *memBlock)
|
||
{
|
||
if (!memBlock || !this->block) return false;
|
||
if (this->flags & DqnMemStack::Flag::IsFixedMemoryFromUser) return false;
|
||
|
||
DqnMemStack::Block **blockPtr = &this->block;
|
||
|
||
while (*blockPtr && (*blockPtr) != memBlock)
|
||
blockPtr = &((*blockPtr)->prevBlock);
|
||
|
||
if (*blockPtr)
|
||
{
|
||
DqnMemStack::Block *blockToFree = *blockPtr;
|
||
(*blockPtr) = blockToFree->prevBlock;
|
||
DqnMem_Free(blockToFree);
|
||
|
||
// No more blocks, then last block has been freed
|
||
if (!this->block) DQN_ASSERT_HARD(this->tempRegionCount == 0);
|
||
return true;
|
||
}
|
||
|
||
return false;
|
||
}
|
||
|
||
DQN_FILE_SCOPE bool DqnMemStack::FreeLastBlock()
|
||
{
|
||
bool result = this->FreeMemBlock(this->block);
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE void DqnMemStack::ClearCurrBlock(const bool zeroClear)
|
||
{
|
||
if (this->block)
|
||
{
|
||
this->block->used = 0;
|
||
if (zeroClear)
|
||
{
|
||
DqnMem_Clear(this->block->memory, 0, this->block->size);
|
||
}
|
||
}
|
||
}
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// #DqnMemStackTempRegion Implementation
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
DQN_FILE_SCOPE DqnMemStackTempRegion DqnMemStack::TempRegionBegin()
|
||
{
|
||
DqnMemStackTempRegion result;
|
||
result.stack = this;
|
||
result.startingBlock = this->block;
|
||
result.used = this->block->used;
|
||
this->tempRegionCount++;
|
||
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE void DqnMemStack::TempRegionEnd(DqnMemStackTempRegion region)
|
||
{
|
||
DqnMemStack *stack = region.stack;
|
||
DQN_ASSERT(stack == this);
|
||
|
||
while (this->block != region.startingBlock)
|
||
this->FreeLastBlock();
|
||
|
||
if (this->block)
|
||
{
|
||
DQN_ASSERT_HARD(this->block->used >= region.used);
|
||
this->block->used = region.used;
|
||
}
|
||
|
||
this->tempRegionCount--;
|
||
DQN_ASSERT_HARD(this->tempRegionCount >= 0);
|
||
}
|
||
|
||
DqnMemStackTempRegionGuard DqnMemStack::TempRegionGuard()
|
||
{
|
||
return DqnMemStackTempRegionGuard(this);
|
||
}
|
||
|
||
DqnMemStackTempRegionGuard::DqnMemStackTempRegionGuard(DqnMemStack *const stack)
|
||
{
|
||
this->memRegion = stack->TempRegionBegin();
|
||
}
|
||
|
||
DqnMemStackTempRegionGuard::~DqnMemStackTempRegionGuard()
|
||
{
|
||
const DqnMemStackTempRegion ®ion = this->memRegion;
|
||
DqnMemStack *const stack = region.stack;
|
||
stack->TempRegionEnd(region);
|
||
}
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// #DqnMemStack Advanced API Implementation
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
DQN_FILE_SCOPE DqnMemStack::Block *DqnMemStack::AllocateCompatibleBlock(size_t size,
|
||
const bool zeroClear)
|
||
{
|
||
if (this->flags & DqnMemStack::Flag::IsFixedMemoryFromUser) return nullptr;
|
||
if (this->flags & DqnMemStack::Flag::IsNotExpandable) return nullptr;
|
||
|
||
DqnMemStack::Block *memBlock =
|
||
DqnMemStackInternal_AllocateBlock(this->byteAlign, size, zeroClear, this->memAPI);
|
||
return memBlock;
|
||
}
|
||
|
||
DQN_FILE_SCOPE bool DqnMemStack::AttachBlock(DqnMemStack::Block *const newBlock)
|
||
{
|
||
if (!newBlock) return false;
|
||
if (this->flags & DqnMemStack::Flag::IsFixedMemoryFromUser) return false;
|
||
if (this->flags & DqnMemStack::Flag::IsNotExpandable) return false;
|
||
|
||
newBlock->prevBlock = this->block;
|
||
this->block = newBlock;
|
||
return true;
|
||
}
|
||
|
||
DQN_FILE_SCOPE bool DqnMemStack::DetachBlock(DqnMemStack::Block *const detachBlock)
|
||
{
|
||
if (!detachBlock) return false;
|
||
if (this->flags & DqnMemStack::Flag::IsFixedMemoryFromUser) return false;
|
||
if (this->flags & DqnMemStack::Flag::IsNotExpandable) return false;
|
||
|
||
DqnMemStack::Block **blockPtr = &this->block;
|
||
while (*blockPtr && *blockPtr != detachBlock)
|
||
blockPtr = &((*blockPtr)->prevBlock);
|
||
|
||
if (*blockPtr)
|
||
{
|
||
*blockPtr = detachBlock->prevBlock;
|
||
detachBlock->prevBlock = nullptr;
|
||
}
|
||
else
|
||
{
|
||
return false;
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
DQN_FILE_SCOPE void DqnMemStack::FreeDetachedBlock(DqnMemStack::Block *memBlock)
|
||
{
|
||
if (!memBlock) return;
|
||
DqnMem_Free(memBlock);
|
||
}
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// #DqnHash Implementation
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// Taken from GingerBill single file library @ github.com/gingerbill/gb
|
||
u32 DqnHash_Murmur32Seed(void const *data, size_t len, u32 seed)
|
||
{
|
||
u32 const c1 = 0xcc9e2d51; u32 const c2 = 0x1b873593; u32 const r1 = 15;
|
||
u32 const r2 = 13; u32 const m = 5; u32 const n = 0xe6546b64;
|
||
|
||
size_t i, nblocks = len / 4;
|
||
u32 hash = seed, k1 = 0;
|
||
u32 const *blocks = (u32 const *)data;
|
||
u8 const *tail = (u8 const *)(data) + nblocks * 4;
|
||
|
||
for (i = 0; i < nblocks; i++) {
|
||
u32 k = blocks[i];
|
||
k *= c1;
|
||
k = (k << r1) | (k >> (32 - r1));
|
||
k *= c2;
|
||
|
||
hash ^= k;
|
||
hash = ((hash << r2) | (hash >> (32 - r2))) * m + n;
|
||
}
|
||
|
||
switch (len & 3) {
|
||
case 3: k1 ^= tail[2] << 16;
|
||
case 2: k1 ^= tail[1] << 8;
|
||
case 1: k1 ^= tail[0];
|
||
|
||
k1 *= c1;
|
||
k1 = (k1 << r1) | (k1 >> (32 - r1));
|
||
k1 *= c2;
|
||
hash ^= k1;
|
||
}
|
||
|
||
hash ^= len; hash ^= (hash >> 16);
|
||
hash *= 0x85ebca6b; hash ^= (hash >> 13);
|
||
hash *= 0xc2b2ae35; hash ^= (hash >> 16);
|
||
|
||
return hash;
|
||
}
|
||
|
||
u64 DqnHash_Murmur64Seed(void const *data_, size_t len, u64 seed)
|
||
{
|
||
u64 const m = 0xc6a4a7935bd1e995ULL;
|
||
i32 const r = 47;
|
||
|
||
u64 h = seed ^ (len * m);
|
||
|
||
u64 const *data = (u64 const *)data_;
|
||
u8 const *data2 = (u8 const *)data_;
|
||
u64 const *end = data + (len / 8);
|
||
|
||
while (data != end) {
|
||
u64 k = *data++;
|
||
k *= m; k ^= k >> r; k *= m;
|
||
h ^= k; h *= m;
|
||
}
|
||
|
||
switch (len & 7) {
|
||
case 7: h ^= (u64)(data2[6]) << 48;
|
||
case 6: h ^= (u64)(data2[5]) << 40;
|
||
case 5: h ^= (u64)(data2[4]) << 32;
|
||
case 4: h ^= (u64)(data2[3]) << 24;
|
||
case 3: h ^= (u64)(data2[2]) << 16;
|
||
case 2: h ^= (u64)(data2[1]) << 8;
|
||
case 1: h ^= (u64)(data2[0]);
|
||
h *= m;
|
||
};
|
||
|
||
h ^= h >> r; h *= m; h ^= h >> r;
|
||
return h;
|
||
}
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// #DqnMath Implementation
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
DQN_FILE_SCOPE f32 DqnMath_Lerp(f32 a, f32 t, f32 b)
|
||
{
|
||
/*
|
||
Linear blend between two values. We having a starting point "a", and
|
||
the distance to "b" is defined as (b - a). Then we can say
|
||
|
||
a + t(b - a)
|
||
|
||
As our linear blend fn. We start from "a" and choosing a t from 0->1
|
||
will vary the value of (b - a) towards b. If we expand this, this
|
||
becomes
|
||
|
||
a + (t * b) - (a * t) == (1 - t)a + t*b
|
||
*/
|
||
f32 result = a + (b - a) * t;
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE f32 DqnMath_Sqrtf(f32 a)
|
||
{
|
||
f32 result = sqrtf(a);
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE f32 DqnMath_Clampf(f32 val, f32 min, f32 max)
|
||
{
|
||
if (val < min) return min;
|
||
if (val > max) return max;
|
||
return val;
|
||
}
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// #DqnV2 Implementation
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
DqnV2::DqnV2() { }
|
||
DqnV2::DqnV2(f32 xy) : x(xy) , y(xy) { }
|
||
DqnV2::DqnV2(f32 x_, f32 y_) : x(x_) , y(y_) { }
|
||
DqnV2::DqnV2(i32 x_, i32 y_) : x((f32)x_) , y((f32)y_) { }
|
||
DqnV2::DqnV2(DqnV2i a) : x((f32)a.x), y((f32)a.y) { }
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// #DqnV2 Arithmetic Implementation
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
DQN_FILE_SCOPE DqnV2 DqnV2_Add(DqnV2 a, DqnV2 b)
|
||
{
|
||
DqnV2 result = {};
|
||
for (u32 i = 0; i < DQN_ARRAY_COUNT(a.e); i++)
|
||
result.e[i] = a.e[i] + b.e[i];
|
||
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE DqnV2 DqnV2_Sub(DqnV2 a, DqnV2 b)
|
||
{
|
||
DqnV2 result = {};
|
||
for (u32 i = 0; i < DQN_ARRAY_COUNT(a.e); i++)
|
||
result.e[i] = a.e[i] - b.e[i];
|
||
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE DqnV2 DqnV2_Scalei(DqnV2 a, i32 b)
|
||
{
|
||
DqnV2 result = {};
|
||
for (u32 i = 0; i < DQN_ARRAY_COUNT(a.e); i++)
|
||
result.e[i] = a.e[i] * b;
|
||
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE DqnV2 DqnV2_Scalef(DqnV2 a, f32 b)
|
||
{
|
||
DqnV2 result = {};
|
||
for (u32 i = 0; i < DQN_ARRAY_COUNT(a.e); i++)
|
||
result.e[i] = a.e[i] * b;
|
||
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE DqnV2 DqnV2_Hadamard(DqnV2 a, DqnV2 b)
|
||
{
|
||
DqnV2 result = {};
|
||
for (u32 i = 0; i < DQN_ARRAY_COUNT(a.e); i++)
|
||
result.e[i] = a.e[i] * b.e[i];
|
||
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE f32 DqnV2_Dot(DqnV2 a, DqnV2 b)
|
||
{
|
||
/*
|
||
DOT PRODUCT
|
||
Two vectors with dot product equals |a||b|cos(theta)
|
||
|a| |d|
|
||
|b| . |e| = (ad + be + cf)
|
||
|c| |f|
|
||
*/
|
||
f32 result = 0;
|
||
for (u32 i = 0; i < DQN_ARRAY_COUNT(a.e); i++)
|
||
result += (a.e[i] * b.e[i]);
|
||
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE bool DqnV2_Equals(DqnV2 a, DqnV2 b)
|
||
{
|
||
bool result = true;
|
||
for (u32 i = 0; i < DQN_ARRAY_COUNT(a.e); i++)
|
||
if (a.e[i] != b.e[i]) result = false;
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE f32 DqnV2_LengthSquared(const DqnV2 a, const DqnV2 b)
|
||
{
|
||
f32 x_ = b.x - a.x;
|
||
f32 y_ = b.y - a.y;
|
||
f32 result = (DQN_SQUARED(x_) + DQN_SQUARED(y_));
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE f32 DqnV2_Length(const DqnV2 a, const DqnV2 b)
|
||
{
|
||
f32 lengthSq = DqnV2_LengthSquared(a, b);
|
||
if (lengthSq == 0) return 0;
|
||
|
||
f32 result = DqnMath_Sqrtf(lengthSq);
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE DqnV2 DqnV2_Normalise(const DqnV2 a)
|
||
{
|
||
f32 magnitude = DqnV2_Length(DqnV2(0, 0), a);
|
||
if (magnitude == 0) return DqnV2(0.0f);
|
||
|
||
DqnV2 result = a * (1.0f / magnitude);
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE bool DqnV2_Overlaps(DqnV2 a, DqnV2 b)
|
||
{
|
||
bool result = false;
|
||
|
||
f32 lenOfA = a.max - a.min;
|
||
f32 lenOfB = b.max - b.min;
|
||
|
||
if (lenOfA > lenOfB)
|
||
{
|
||
DqnV2 tmp = a;
|
||
a = b;
|
||
b = tmp;
|
||
}
|
||
|
||
if ((a.min >= b.min && a.min <= b.max) || (a.max >= b.min && a.max <= b.max))
|
||
{
|
||
result = true;
|
||
}
|
||
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE DqnV2 DqnV2_Perpendicular(const DqnV2 a)
|
||
{
|
||
DqnV2 result = DqnV2(a.y, -a.x);
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE DqnV2 DqnV2_ResizeKeepAspectRatio(DqnV2 srcSize, DqnV2 targetSize)
|
||
{
|
||
f32 ratioA = srcSize.w / targetSize.w;
|
||
f32 ratioB = srcSize.h / targetSize.h;
|
||
f32 ratio = DQN_MIN(ratioA, ratioB);
|
||
DqnV2 result = DqnV2_Scalef(targetSize, ratio);
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE DqnV2 DqnV2_ConstrainToRatio(DqnV2 dim, DqnV2 ratio)
|
||
{
|
||
DqnV2 result = {0};
|
||
f32 numRatioIncrementsToWidth = (f32)(dim.w / ratio.w);
|
||
f32 numRatioIncrementsToHeight = (f32)(dim.h / ratio.h);
|
||
|
||
f32 leastIncrementsToSide =
|
||
DQN_MIN(numRatioIncrementsToHeight, numRatioIncrementsToWidth);
|
||
|
||
result.w = (f32)(ratio.w * leastIncrementsToSide);
|
||
result.h = (f32)(ratio.h * leastIncrementsToSide);
|
||
return result;
|
||
}
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// #DqnV2i Implementation
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
DqnV2i::DqnV2i() {}
|
||
DqnV2i::DqnV2i(i32 x_, i32 y_) : x(x_) , y(y_) { }
|
||
DqnV2i::DqnV2i(f32 x_, f32 y_) : x((i32)x_) , y((i32)y_) { }
|
||
DqnV2i::DqnV2i(DqnV2 a) : x((i32)a.x), y((i32)a.y) { }
|
||
|
||
DQN_FILE_SCOPE DqnV2i DqnV2i_Add(DqnV2i a, DqnV2i b)
|
||
{
|
||
DqnV2i result = {0};
|
||
for (u32 i = 0; i < DQN_ARRAY_COUNT(a.e); i++)
|
||
result.e[i] = a.e[i] + b.e[i];
|
||
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE DqnV2i DqnV2i_Sub(DqnV2i a, DqnV2i b)
|
||
{
|
||
DqnV2i result = {0};
|
||
for (u32 i = 0; i < DQN_ARRAY_COUNT(a.e); i++)
|
||
result.e[i] = a.e[i] - b.e[i];
|
||
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE DqnV2i DqnV2i_Scalef(DqnV2i a, f32 b)
|
||
{
|
||
DqnV2i result = {0};
|
||
for (u32 i = 0; i < DQN_ARRAY_COUNT(a.e); i++)
|
||
result.e[i] = (i32)(a.e[i] * b);
|
||
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE DqnV2i DqnV2i_Scalei(DqnV2i a, i32 b)
|
||
{
|
||
DqnV2i result = {0};
|
||
for (u32 i = 0; i < DQN_ARRAY_COUNT(a.e); i++)
|
||
result.e[i] = a.e[i] * b;
|
||
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE DqnV2i DqnV2i_Hadamard(DqnV2i a, DqnV2i b)
|
||
{
|
||
DqnV2i result = {0};
|
||
for (u32 i = 0; i < DQN_ARRAY_COUNT(a.e); i++)
|
||
result.e[i] = a.e[i] * b.e[i];
|
||
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE f32 DqnV2i_Dot(DqnV2i a, DqnV2i b)
|
||
{
|
||
/*
|
||
DOT PRODUCT
|
||
Two vectors with dot product equals |a||b|cos(theta)
|
||
|a| |d|
|
||
|b| . |e| = (ad + be + cf)
|
||
|c| |f|
|
||
*/
|
||
f32 result = 0;
|
||
for (u32 i = 0; i < DQN_ARRAY_COUNT(a.e); i++)
|
||
result += (a.e[i] * b.e[i]);
|
||
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE bool DqnV2i_Equals(DqnV2i a, DqnV2i b)
|
||
{
|
||
bool result = true;
|
||
for (u32 i = 0; i < DQN_ARRAY_COUNT(a.e); i++)
|
||
if (a.e[i] != b.e[i]) result = false;
|
||
return result;
|
||
}
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// #DqnV3 Implementation
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
DqnV3::DqnV3() { }
|
||
DqnV3::DqnV3(f32 xyz) : x(xyz) , y(xyz) , z(xyz) { }
|
||
DqnV3::DqnV3(f32 x_, f32 y_, f32 z_) : x(x_) , y(y_) , z(z_) { }
|
||
DqnV3::DqnV3(i32 x_, i32 y_, i32 z_) : x((f32)x_), y((f32)y_), z((f32)z_) { }
|
||
|
||
DQN_FILE_SCOPE DqnV3 DqnV3_Add(DqnV3 a, DqnV3 b)
|
||
{
|
||
DqnV3 result = {0};
|
||
for (u32 i = 0; i < DQN_ARRAY_COUNT(a.e); i++)
|
||
result.e[i] = a.e[i] + b.e[i];
|
||
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE DqnV3 DqnV3_Sub(DqnV3 a, DqnV3 b)
|
||
{
|
||
DqnV3 result = {0};
|
||
for (u32 i = 0; i < DQN_ARRAY_COUNT(a.e); i++)
|
||
result.e[i] = a.e[i] - b.e[i];
|
||
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE DqnV3 DqnV3_Scalei(DqnV3 a, i32 b)
|
||
{
|
||
DqnV3 result = {0};
|
||
for (u32 i = 0; i < DQN_ARRAY_COUNT(a.e); i++)
|
||
result.e[i] = a.e[i] * b;
|
||
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE DqnV3 DqnV3_Scalef(DqnV3 a, f32 b)
|
||
{
|
||
DqnV3 result = {0};
|
||
for (u32 i = 0; i < DQN_ARRAY_COUNT(a.e); i++)
|
||
result.e[i] = a.e[i] * b;
|
||
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE DqnV3 DqnV3_Hadamard(DqnV3 a, DqnV3 b)
|
||
{
|
||
DqnV3 result = {0};
|
||
for (u32 i = 0; i < DQN_ARRAY_COUNT(a.e); i++)
|
||
result.e[i] = a.e[i] * b.e[i];
|
||
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE f32 DqnV3_Dot(DqnV3 a, DqnV3 b)
|
||
{
|
||
/*
|
||
DOT PRODUCT
|
||
Two vectors with dot product equals |a||b|cos(theta)
|
||
|a| |d|
|
||
|b| . |e| = (ad + be + cf)
|
||
|c| |f|
|
||
*/
|
||
f32 result = 0;
|
||
for (u32 i = 0; i < DQN_ARRAY_COUNT(a.e); i++)
|
||
result += (a.e[i] * b.e[i]);
|
||
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE bool DqnV3_Equals(DqnV3 a, DqnV3 b)
|
||
{
|
||
bool result = true;
|
||
for (u32 i = 0; i < DQN_ARRAY_COUNT(a.e); i++)
|
||
if (a.e[i] != b.e[i]) result = false;
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE DqnV3 DqnV3_Cross(DqnV3 a, DqnV3 b)
|
||
{
|
||
/*
|
||
CROSS PRODUCT
|
||
Generate a perpendicular vector to the 2 vectors
|
||
|a| |d| |bf - ce|
|
||
|b| x |e| = |cd - af|
|
||
|c| |f| |ae - be|
|
||
*/
|
||
DqnV3 result = {0};
|
||
result.e[0] = (a.e[1] * b.e[2]) - (a.e[2] * b.e[1]);
|
||
result.e[1] = (a.e[2] * b.e[0]) - (a.e[0] * b.e[2]);
|
||
result.e[2] = (a.e[0] * b.e[1]) - (a.e[1] * b.e[0]);
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE DqnV3 DqnV3_Normalise(DqnV3 a)
|
||
{
|
||
f32 length = DqnMath_Sqrtf(DQN_SQUARED(a.x) + DQN_SQUARED(a.y) + DQN_SQUARED(a.z));
|
||
f32 invLength = 1 / length;
|
||
DqnV3 result = a * invLength;
|
||
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE f32 DqnV3_LengthSquared(DqnV3 a, DqnV3 b)
|
||
{
|
||
f32 x = b.x - a.x;
|
||
f32 y = b.y - a.y;
|
||
f32 z = b.z - a.z;
|
||
f32 result = (DQN_SQUARED(x) + DQN_SQUARED(y) + DQN_SQUARED(z));
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE f32 DqnV3_Length(DqnV3 a, DqnV3 b)
|
||
{
|
||
f32 lengthSq = DqnV3_LengthSquared(a, b);
|
||
if (lengthSq == 0) return 0;
|
||
|
||
f32 result = DqnMath_Sqrtf(lengthSq);
|
||
return result;
|
||
}
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// #DqnV3i Implementation
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
DqnV3i::DqnV3i(i32 x_, i32 y_, i32 z_) : x(x_) , y(y_) , z(z_) { }
|
||
DqnV3i::DqnV3i(f32 x_, f32 y_, f32 z_) : x((i32)x_), y((i32)y_), z((i32)z_) { }
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// #DqnV4 Implementation
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
DqnV4::DqnV4() {};
|
||
DqnV4::DqnV4(f32 xyzw) : x(xyzw) , y(xyzw) , z(xyzw) , w(xyzw) { }
|
||
DqnV4::DqnV4(f32 x_, f32 y_, f32 z_, f32 w_) : x(x_) , y(y_) , z(z_) , w(w_) { }
|
||
DqnV4::DqnV4(i32 x_, i32 y_, i32 z_, i32 w_) : x((f32)x_), y((f32)y_), z((f32)z_), w((f32)w_) { }
|
||
DqnV4::DqnV4(DqnV3 a, f32 w) : x(a.x) , y(a.y) , z(a.z) , w(w) { }
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// #DqnV4 Arithmetic Implementation
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
DQN_FILE_SCOPE DqnV4 DqnV4_Add(DqnV4 a, DqnV4 b)
|
||
{
|
||
DqnV4 result = {0};
|
||
for (u32 i = 0; i < DQN_ARRAY_COUNT(a.e); i++)
|
||
result.e[i] = a.e[i] + b.e[i];
|
||
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE DqnV4 DqnV4_Sub(DqnV4 a, DqnV4 b)
|
||
{
|
||
DqnV4 result = {0};
|
||
for (u32 i = 0; i < DQN_ARRAY_COUNT(a.e); i++)
|
||
result.e[i] = a.e[i] - b.e[i];
|
||
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE DqnV4 DqnV4_Scalei(DqnV4 a, i32 b)
|
||
{
|
||
DqnV4 result = {0};
|
||
for (u32 i = 0; i < DQN_ARRAY_COUNT(a.e); i++)
|
||
result.e[i] = a.e[i] * b;
|
||
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE DqnV4 DqnV4_Scalef(DqnV4 a, f32 b)
|
||
{
|
||
DqnV4 result = {0};
|
||
for (u32 i = 0; i < DQN_ARRAY_COUNT(a.e); i++)
|
||
result.e[i] = a.e[i] * b;
|
||
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE DqnV4 DqnV4_Hadamard(DqnV4 a, DqnV4 b)
|
||
{
|
||
DqnV4 result = {0};
|
||
for (u32 i = 0; i < DQN_ARRAY_COUNT(a.e); i++)
|
||
result.e[i] = a.e[i] * b.e[i];
|
||
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE f32 DqnV4_Dot(DqnV4 a, DqnV4 b)
|
||
{
|
||
/*
|
||
DOT PRODUCT
|
||
Two vectors with dot product equals |a||b|cos(theta)
|
||
|a| |d|
|
||
|b| . |e| = (ad + be + cf)
|
||
|c| |f|
|
||
*/
|
||
f32 result = 0;
|
||
for (u32 i = 0; i < DQN_ARRAY_COUNT(a.e); i++)
|
||
result += (a.e[i] * b.e[i]);
|
||
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE bool DqnV4_Equals(DqnV4 a, DqnV4 b)
|
||
{
|
||
bool result = true;
|
||
for (u32 i = 0; i < DQN_ARRAY_COUNT(a.e); i++)
|
||
if (a.e[i] != b.e[i]) result = false;
|
||
return result;
|
||
}
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// #DqnMat4 Implementation
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
DQN_FILE_SCOPE DqnMat4 DqnMat4_Identity()
|
||
{
|
||
DqnMat4 result = {0, 0, 0, 0};
|
||
result.e[0][0] = 1;
|
||
result.e[1][1] = 1;
|
||
result.e[2][2] = 1;
|
||
result.e[3][3] = 1;
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE DqnMat4 DqnMat4_Orthographic(f32 left, f32 right, f32 bottom, f32 top, f32 zNear,
|
||
f32 zFar)
|
||
{
|
||
DqnMat4 result = DqnMat4_Identity();
|
||
result.e[0][0] = +2.0f / (right - left);
|
||
result.e[1][1] = +2.0f / (top - bottom);
|
||
result.e[2][2] = -2.0f / (zFar - zNear);
|
||
|
||
result.e[3][0] = -(right + left) / (right - left);
|
||
result.e[3][1] = -(top + bottom) / (top - bottom);
|
||
result.e[3][2] = -(zFar + zNear) / (zFar - zNear);
|
||
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE DqnMat4 DqnMat4_Perspective(f32 fovYDegrees, f32 aspectRatio, f32 zNear, f32 zFar)
|
||
{
|
||
f32 fovYRadians = DQN_DEGREES_TO_RADIANS(fovYDegrees);
|
||
f32 fovYRadiansOver2 = fovYRadians * 0.5f;
|
||
f32 tanFovYRadiansOver2 = tanf(fovYRadiansOver2);
|
||
f32 zNearSubZFar = zNear - zFar;
|
||
|
||
DqnMat4 result = DqnMat4_Identity();
|
||
result.e[0][0] = 1.0f / (aspectRatio * tanFovYRadiansOver2);
|
||
result.e[1][1] = 1.0f / tanFovYRadiansOver2;
|
||
result.e[2][2] = (zNear + zFar) / zNearSubZFar;
|
||
result.e[2][3] = -1.0f;
|
||
result.e[3][2] = (2.0f * zNear * zFar) / zNearSubZFar;
|
||
result.e[3][3] = 0.0f;
|
||
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE DqnMat4 DqnMat4_LookAt(DqnV3 eye, DqnV3 center, DqnV3 up)
|
||
{
|
||
DqnMat4 result = {0, 0, 0, 0};
|
||
|
||
DqnV3 f = DqnV3_Normalise(DqnV3_Sub(eye, center));
|
||
DqnV3 s = DqnV3_Normalise(DqnV3_Cross(up, f));
|
||
DqnV3 u = DqnV3_Cross(f, s);
|
||
|
||
result.e[0][0] = s.x;
|
||
result.e[0][1] = u.x;
|
||
result.e[0][2] = -f.x;
|
||
|
||
result.e[1][0] = s.y;
|
||
result.e[1][1] = u.y;
|
||
result.e[1][2] = -f.y;
|
||
|
||
result.e[2][0] = s.z;
|
||
result.e[2][1] = u.z;
|
||
result.e[2][2] = -f.z;
|
||
|
||
result.e[3][0] = -DqnV3_Dot(s, eye);
|
||
result.e[3][1] = -DqnV3_Dot(u, eye);
|
||
result.e[3][2] = DqnV3_Dot(f, eye);
|
||
result.e[3][3] = 1.0f;
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE DqnMat4 DqnMat4_Translate3f(f32 x, f32 y, f32 z)
|
||
{
|
||
DqnMat4 result = DqnMat4_Identity();
|
||
result.e[3][0] = x;
|
||
result.e[3][1] = y;
|
||
result.e[3][2] = z;
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE DqnMat4 DqnMat4_TranslateV3(DqnV3 vec)
|
||
{
|
||
DqnMat4 result = DqnMat4_Identity();
|
||
result.e[3][0] = vec.x;
|
||
result.e[3][1] = vec.y;
|
||
result.e[3][2] = vec.z;
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE DqnMat4 DqnMat4_Rotate(f32 radians, f32 x, f32 y, f32 z)
|
||
{
|
||
DqnMat4 result = DqnMat4_Identity();
|
||
f32 sinVal = sinf(radians);
|
||
f32 cosVal = cosf(radians);
|
||
f32 oneMinusCosVal = 1 - cosVal;
|
||
|
||
DqnV3 axis = DqnV3_Normalise(DqnV3(x, y, z));
|
||
|
||
result.e[0][0] = (axis.x * axis.x * oneMinusCosVal) + cosVal;
|
||
result.e[0][1] = (axis.x * axis.y * oneMinusCosVal) + (axis.z * sinVal);
|
||
result.e[0][2] = (axis.x * axis.z * oneMinusCosVal) - (axis.y * sinVal);
|
||
|
||
result.e[1][0] = (axis.y * axis.x * oneMinusCosVal) - (axis.z * sinVal);
|
||
result.e[1][1] = (axis.y * axis.y * oneMinusCosVal) + cosVal;
|
||
result.e[1][2] = (axis.y * axis.z * oneMinusCosVal) + (axis.x * sinVal);
|
||
|
||
result.e[2][0] = (axis.z * axis.x * oneMinusCosVal) + (axis.y * sinVal);
|
||
result.e[2][1] = (axis.z * axis.y * oneMinusCosVal) - (axis.x * sinVal);
|
||
result.e[2][2] = (axis.z * axis.z * oneMinusCosVal) + cosVal;
|
||
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE DqnMat4 DqnMat4_Scale(f32 x, f32 y, f32 z)
|
||
{
|
||
DqnMat4 result = {0, 0, 0, 0};
|
||
result.e[0][0] = x;
|
||
result.e[1][1] = y;
|
||
result.e[2][2] = z;
|
||
result.e[3][3] = 1;
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE DqnMat4 DqnMat4_ScaleV3(DqnV3 scale)
|
||
{
|
||
DqnMat4 result = {0, 0, 0, 0};
|
||
result.e[0][0] = scale.x;
|
||
result.e[1][1] = scale.y;
|
||
result.e[2][2] = scale.z;
|
||
result.e[3][3] = 1;
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE DqnMat4 DqnMat4_Mul(DqnMat4 a, DqnMat4 b)
|
||
{
|
||
DqnMat4 result = {0};
|
||
for (u32 j = 0; j < 4; j++) {
|
||
for (u32 i = 0; i < 4; i++)
|
||
{
|
||
result.e[j][i] = a.e[0][i] * b.e[j][0]
|
||
+ a.e[1][i] * b.e[j][1]
|
||
+ a.e[2][i] * b.e[j][2]
|
||
+ a.e[3][i] * b.e[j][3];
|
||
}
|
||
}
|
||
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE DqnV4 DqnMat4_MulV4(DqnMat4 a, DqnV4 b)
|
||
{
|
||
DqnV4 result = {0};
|
||
result.x = (a.e[0][0] * b.x) + (a.e[1][0] * b.y) + (a.e[2][0] * b.z) + (a.e[3][0] * b.w);
|
||
result.y = (a.e[0][1] * b.x) + (a.e[1][1] * b.y) + (a.e[2][1] * b.z) + (a.e[3][1] * b.w);
|
||
result.z = (a.e[0][2] * b.x) + (a.e[1][2] * b.y) + (a.e[2][2] * b.z) + (a.e[3][2] * b.w);
|
||
result.w = (a.e[0][3] * b.x) + (a.e[1][3] * b.y) + (a.e[2][3] * b.z) + (a.e[3][3] * b.w);
|
||
|
||
return result;
|
||
}
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// #DqnRect Implementation
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
DqnRect::DqnRect() {}
|
||
DqnRect::DqnRect(DqnV2 origin, DqnV2 size)
|
||
{
|
||
this->min = origin;
|
||
this->max = this->min + size;
|
||
}
|
||
|
||
DqnRect::DqnRect(f32 x, f32 y, f32 w, f32 h)
|
||
{
|
||
this->min = DqnV2(x, y);
|
||
this->max = DqnV2(x + w, y + h);
|
||
}
|
||
|
||
DqnRect::DqnRect(i32 x, i32 y, i32 w, i32 h)
|
||
{
|
||
this->min = DqnV2(x, y);
|
||
this->max = DqnV2(x + w, y + h);
|
||
}
|
||
|
||
void DqnRect::GetSize(f32 *const width, f32 *const height) const
|
||
{
|
||
if (width) *width = this->max.x - this->min.x;
|
||
if (height) *height = this->max.y - this->min.y;
|
||
}
|
||
|
||
DqnV2 DqnRect::GetSize() const
|
||
{
|
||
f32 width = this->max.x - this->min.x;
|
||
f32 height = this->max.y - this->min.y;
|
||
DqnV2 result = DqnV2(width, height);
|
||
return result;
|
||
}
|
||
|
||
DqnV2 DqnRect::GetCenter() const
|
||
{
|
||
f32 sumX = this->min.x + this->max.x;
|
||
f32 sumY = this->min.y + this->max.y;
|
||
DqnV2 result = DqnV2(sumX, sumY) * 0.5f;
|
||
return result;
|
||
}
|
||
|
||
DqnRect DqnRect::ClipRect(const DqnRect clip) const
|
||
{
|
||
DqnV2 clipSize = clip.GetSize();
|
||
|
||
DqnRect result;
|
||
result.max.x = DQN_MIN(this->max.x, clipSize.w);
|
||
result.max.y = DQN_MIN(this->max.y, clipSize.h);
|
||
result.min.x = DQN_MAX(clip.min.x, this->min.x);
|
||
result.min.y = DQN_MAX(clip.min.y, this->min.y);
|
||
return result;
|
||
}
|
||
|
||
DqnRect DqnRect::Move(const DqnV2 shift) const
|
||
{
|
||
DqnRect result;
|
||
result.min = this->min + shift;
|
||
result.max = this->max + shift;
|
||
return result;
|
||
}
|
||
|
||
bool DqnRect::ContainsP(const DqnV2 p) const
|
||
{
|
||
bool outsideOfRectX = false;
|
||
if (p.x < this->min.x || p.x > this->max.w)
|
||
outsideOfRectX = true;
|
||
|
||
bool outsideOfRectY = false;
|
||
if (p.y < this->min.y || p.y > this->max.h)
|
||
outsideOfRectY = true;
|
||
|
||
if (outsideOfRectX || outsideOfRectY) return false;
|
||
|
||
return true;
|
||
}
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// #DqnChar Implementation
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
DQN_FILE_SCOPE char DqnChar_ToLower(char c)
|
||
{
|
||
if (c >= 'A' && c <= 'Z')
|
||
{
|
||
i32 shiftOffset = 'a' - 'A';
|
||
return (c + (char)shiftOffset);
|
||
}
|
||
return c;
|
||
}
|
||
|
||
DQN_FILE_SCOPE char DqnChar_ToUpper(char c)
|
||
{
|
||
if (c >= 'a' && c <= 'z')
|
||
{
|
||
i32 shiftOffset = 'a' - 'A';
|
||
return (c - (char)shiftOffset);
|
||
}
|
||
return c;
|
||
}
|
||
|
||
|
||
DQN_FILE_SCOPE bool DqnChar_IsDigit(char c)
|
||
{
|
||
if (c >= '0' && c <= '9') return true;
|
||
return false;
|
||
}
|
||
|
||
DQN_FILE_SCOPE bool DqnChar_IsAlpha(char c)
|
||
{
|
||
if ((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z')) return true;
|
||
return false;
|
||
}
|
||
|
||
DQN_FILE_SCOPE bool DqnChar_IsAlphaNum(char c)
|
||
{
|
||
if (DqnChar_IsAlpha(c) || DqnChar_IsDigit(c)) return true;
|
||
return false;
|
||
}
|
||
|
||
DQN_FILE_SCOPE char *DqnChar_SkipWhitespace(char *ptr)
|
||
{
|
||
while (ptr && (*ptr == ' ' || *ptr == '\r' || *ptr == '\n')) ptr++;
|
||
return ptr;
|
||
}
|
||
|
||
DQN_FILE_SCOPE char *DqnChar_FindLastChar(char *ptr, const char ch, i32 len, u32 *const lenToChar)
|
||
{
|
||
for (i32 i = len - 1; i >= 0; i--)
|
||
{
|
||
if (ptr[i] == ch)
|
||
{
|
||
if (lenToChar) *lenToChar = (u32)len - i;
|
||
return &ptr[i];
|
||
}
|
||
}
|
||
|
||
return nullptr;
|
||
}
|
||
|
||
DQN_FILE_SCOPE i32 DqnChar_GetNextLine(char *ptr, i32 *lineLength)
|
||
{
|
||
i32 len = 0;
|
||
ptr = DqnChar_SkipWhitespace(ptr);
|
||
|
||
// Advance pointer to first new line
|
||
while (ptr && *ptr != 0 && *ptr != '\r' && *ptr != '\n')
|
||
{
|
||
ptr++;
|
||
len++;
|
||
}
|
||
|
||
if (!ptr || *ptr == 0)
|
||
{
|
||
if (lineLength) *lineLength = len;
|
||
return -1;
|
||
}
|
||
|
||
// Destroy all new lines
|
||
i32 extraChars = 0;
|
||
while (ptr && (*ptr == '\r' || *ptr == '\n' || *ptr == ' '))
|
||
{
|
||
*ptr = 0;
|
||
ptr++;
|
||
extraChars++;
|
||
}
|
||
|
||
if (lineLength) *lineLength = len;
|
||
return len + extraChars;
|
||
}
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// #DqnStr Implementation
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
DQN_FILE_SCOPE i32 DqnStr_Cmp(const char *const a, const char *const b, i32 numBytesToCompare, bool ignoreCase)
|
||
{
|
||
if (!a && !b) return -1;
|
||
if (!a) return -1;
|
||
if (!b) return -1;
|
||
if (numBytesToCompare == 0) return -1;
|
||
|
||
i32 bytesCompared = 0;
|
||
char const *aPtr = a;
|
||
char const *bPtr = b;
|
||
|
||
if (ignoreCase)
|
||
{
|
||
while (DqnChar_ToLower((*aPtr)) == DqnChar_ToLower((*bPtr)))
|
||
{
|
||
if (!(*aPtr)) return 0;
|
||
bytesCompared++;
|
||
aPtr++;
|
||
bPtr++;
|
||
|
||
if (bytesCompared == numBytesToCompare) return 0;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
while ((*aPtr) == (*bPtr))
|
||
{
|
||
if (!(*aPtr)) return 0;
|
||
bytesCompared++;
|
||
aPtr++;
|
||
bPtr++;
|
||
|
||
if (bytesCompared == numBytesToCompare) return 0;
|
||
}
|
||
}
|
||
|
||
return (((*aPtr) < (*bPtr)) ? -1 : 1);
|
||
}
|
||
|
||
DQN_FILE_SCOPE i32 DqnStr_Len(const char *const a)
|
||
{
|
||
i32 result = 0;
|
||
while (a && a[result]) result++;
|
||
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE i32 DqnStr_LenUTF8(const u32 *const a, i32 *const lenInBytes)
|
||
{
|
||
i32 utf8Len = 0;
|
||
i32 utf8LenInBytes = 0;
|
||
u8 *bytePtr = (u8 *)a;
|
||
while (true)
|
||
{
|
||
u32 codepoint = 0;
|
||
i32 numBytesInCodepoint = DqnStr_ReadUTF8Codepoint((u32 *)bytePtr, &codepoint);
|
||
|
||
if (numBytesInCodepoint == 0) break;
|
||
utf8Len++;
|
||
bytePtr += numBytesInCodepoint;
|
||
utf8LenInBytes += numBytesInCodepoint;
|
||
}
|
||
|
||
if (lenInBytes) *lenInBytes = utf8LenInBytes;
|
||
return utf8Len;
|
||
}
|
||
|
||
DQN_FILE_SCOPE i32 DqnStr_LenDelimitWith(const char *a, const char delimiter)
|
||
{
|
||
i32 result = 0;
|
||
while (a && a[result] && a[result] != delimiter) result++;
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE char *DqnStr_Copy(char *const dest, const char *const src, const i32 numChars)
|
||
{
|
||
if (!dest) return nullptr;
|
||
if (!src) return nullptr;
|
||
if (numChars < 0) return nullptr;
|
||
|
||
for (i32 i = 0; i < numChars; i++)
|
||
dest[i] = src[i];
|
||
|
||
return dest;
|
||
}
|
||
|
||
DQN_FILE_SCOPE i32 DqnStr_ReadUTF8Codepoint(const u32 *const a, u32 *outCodepoint)
|
||
{
|
||
u8 *byte = (u8 *)a;
|
||
if (a && byte[0])
|
||
{
|
||
i32 numBytesInChar = 0;
|
||
u32 actualChar = 0;
|
||
|
||
if (byte[0] <= 128)
|
||
{
|
||
actualChar = byte[0];
|
||
numBytesInChar = 1;
|
||
}
|
||
else if ((byte[0] & 0xE0) == 0xC0)
|
||
{
|
||
// Header 110xxxxx 10xxxxxx
|
||
actualChar = ((u32)(byte[0] & 0x3F) << 6)
|
||
| ((u32)(byte[1] & 0x1F) << 0);
|
||
numBytesInChar = 2;
|
||
}
|
||
else if ((byte[0] & 0xF0) == 0xE0)
|
||
{
|
||
// Header 1110xxxx 10xxxxxx 10xxxxxx
|
||
actualChar = ((u32)(byte[0] & 0x0F) << 12)
|
||
| ((u32)(byte[1] & 0x3F) << 6 )
|
||
| ((u32)(byte[2] & 0x3F) << 0 );
|
||
numBytesInChar = 3;
|
||
}
|
||
else if ((byte[0] & 0xF8) == 0xF0)
|
||
{
|
||
// Header 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx
|
||
actualChar = ((u32)(byte[0] & 0x07) << 18)
|
||
| ((u32)(byte[1] & 0x3F) << 12)
|
||
| ((u32)(byte[2] & 0x3F) << 6 )
|
||
| ((u32)(byte[3] & 0x3F) << 0 );
|
||
numBytesInChar = 4;
|
||
}
|
||
else
|
||
{
|
||
// NOTE: Malformed utf8 stream
|
||
}
|
||
|
||
if (outCodepoint) *outCodepoint = actualChar;
|
||
return numBytesInChar;
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
DQN_FILE_SCOPE void DqnStr_Reverse(char *const buf, const u32 bufSize)
|
||
{
|
||
if (!buf) return;
|
||
i32 mid = bufSize / 2;
|
||
|
||
for (i32 i = 0; i < mid; i++)
|
||
{
|
||
char tmp = buf[i];
|
||
buf[i] = buf[(bufSize - 1) - i];
|
||
buf[(bufSize - 1) - i] = tmp;
|
||
}
|
||
}
|
||
|
||
DQN_FILE_SCOPE i32 DqnStr_FindFirstOccurence(const char *const src, const i32 srcLen,
|
||
const char *const find, const i32 findLen, bool ignoreCase)
|
||
{
|
||
if (!src || !find) return -1;
|
||
if (srcLen == 0 || findLen == 0) return -1;
|
||
if (srcLen < findLen) return -1;
|
||
|
||
for (i32 indexIntoSrc = 0; indexIntoSrc < srcLen; indexIntoSrc++)
|
||
{
|
||
// NOTE: As we scan through, if the src string we index into becomes
|
||
// shorter than the substring we're checking then the substring is not
|
||
// contained in the src string.
|
||
i32 remainingLenInSrcStr = srcLen - indexIntoSrc;
|
||
if (remainingLenInSrcStr < findLen) break;
|
||
|
||
const char *srcSubStr = src + indexIntoSrc;
|
||
if (DqnStr_Cmp(srcSubStr, find, findLen, ignoreCase) == 0)
|
||
{
|
||
return indexIntoSrc;
|
||
}
|
||
}
|
||
|
||
// NOTE(doyle): We have early exit, if we reach here, then the substring was
|
||
// not found.
|
||
return -1;
|
||
}
|
||
|
||
DQN_FILE_SCOPE char *DqnStr_GetFirstOccurence(char *const src, const i32 srcLen, char *const find,
|
||
const i32 findLen, bool ignoreCase)
|
||
{
|
||
i32 offset = DqnStr_FindFirstOccurence(src, srcLen, find, findLen, ignoreCase);
|
||
if (offset == -1) return nullptr;
|
||
|
||
char *result = src + offset;
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE bool DqnStr_HasSubstring(const char *const src, const i32 srcLen,
|
||
const char *const find, const i32 findLen, bool ignoreCase)
|
||
{
|
||
if (DqnStr_FindFirstOccurence(src, srcLen, find, findLen, ignoreCase) == -1)
|
||
return false;
|
||
|
||
return true;
|
||
}
|
||
|
||
DQN_FILE_SCOPE i32 Dqn_I64ToStr(const i64 value, char *const buf, const i32 bufSize)
|
||
{
|
||
bool validBuffer = true;
|
||
if (!buf || bufSize == 0) validBuffer = false;
|
||
|
||
if (value == 0)
|
||
{
|
||
if (validBuffer) buf[0] = '0';
|
||
return 1;
|
||
}
|
||
|
||
i32 charIndex = 0;
|
||
bool negative = false;
|
||
if (value < 0) negative = true;
|
||
|
||
if (negative)
|
||
{
|
||
if (validBuffer) buf[charIndex] = '-';
|
||
charIndex++;
|
||
}
|
||
|
||
bool lastDigitDecremented = false;
|
||
i64 val = DQN_ABS(value);
|
||
if (val < 0)
|
||
{
|
||
// TODO(doyle): This will occur if we are checking the smallest number
|
||
// possible in i64 since the range of negative numbers is one more than
|
||
// it is for positives, so ABS will fail.
|
||
lastDigitDecremented = true;
|
||
val = DQN_ABS(val - 1);
|
||
DQN_ASSERT_HARD(val >= 0);
|
||
}
|
||
|
||
if (validBuffer)
|
||
{
|
||
if (lastDigitDecremented)
|
||
{
|
||
i64 rem = (val % 10) + 1;
|
||
buf[charIndex++] = (u8)rem + '0';
|
||
val /= 10;
|
||
}
|
||
|
||
while (val != 0 && charIndex < bufSize)
|
||
{
|
||
i64 rem = val % 10;
|
||
buf[charIndex++] = (u8)rem + '0';
|
||
val /= 10;
|
||
}
|
||
|
||
// NOTE(doyle): If string is negative, we only want to reverse starting
|
||
// from the second character, so we don't put the negative sign at the
|
||
// end
|
||
if (negative)
|
||
{
|
||
DqnStr_Reverse(buf + 1, charIndex - 1);
|
||
}
|
||
else
|
||
{
|
||
DqnStr_Reverse(buf, charIndex);
|
||
}
|
||
}
|
||
else
|
||
{
|
||
while (val != 0)
|
||
{
|
||
val /= 10;
|
||
charIndex++;
|
||
}
|
||
}
|
||
|
||
return charIndex;
|
||
}
|
||
|
||
DQN_FILE_SCOPE i64 Dqn_StrToI64(const char *const buf, const i32 bufSize)
|
||
{
|
||
if (!buf || bufSize == 0) return 0;
|
||
|
||
i32 index = 0;
|
||
while (buf[index] == ' ')
|
||
{
|
||
index++;
|
||
}
|
||
|
||
bool isNegative = false;
|
||
if (buf[index] == '-' || buf[index] == '+')
|
||
{
|
||
if (buf[index] == '-') isNegative = true;
|
||
index++;
|
||
}
|
||
else if (!DqnChar_IsDigit(buf[index]))
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
i64 result = 0;
|
||
for (i32 i = index; i < bufSize; i++)
|
||
{
|
||
if (DqnChar_IsDigit(buf[i]))
|
||
{
|
||
result *= 10;
|
||
result += (buf[i] - '0');
|
||
}
|
||
else
|
||
{
|
||
break;
|
||
}
|
||
}
|
||
|
||
if (isNegative) result *= -1;
|
||
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE f32 Dqn_StrToF32(const char *const buf, const i32 bufSize)
|
||
{
|
||
if (!buf || bufSize == 0) return 0;
|
||
|
||
i32 index = 0;
|
||
bool isNegative = false;
|
||
if (buf[index] == '-')
|
||
{
|
||
index++;
|
||
isNegative = true;
|
||
}
|
||
|
||
bool isPastDecimal = false;
|
||
i32 numDigitsAfterDecimal = 0;
|
||
i32 rawNumber = 0;
|
||
|
||
f32 digitShiftValue = 1.0f;
|
||
f32 digitShiftMultiplier = 0.1f;
|
||
for (i32 i = index; i < bufSize; i++)
|
||
{
|
||
char ch = buf[i];
|
||
if (ch == '.')
|
||
{
|
||
isPastDecimal = true;
|
||
continue;
|
||
}
|
||
// Handle scientific notation
|
||
else if (ch == 'e')
|
||
{
|
||
bool digitShiftIsPositive = true;
|
||
if (i < bufSize)
|
||
{
|
||
if (buf[i + 1] == '-') digitShiftIsPositive = false;
|
||
DQN_ASSERT_HARD(buf[i + 1] == '-' || buf[i + 1] == '+');
|
||
i += 2;
|
||
}
|
||
|
||
i32 exponentPow = 0;
|
||
bool scientificNotation = false;
|
||
while (i < bufSize)
|
||
{
|
||
scientificNotation = true;
|
||
char exponentCh = buf[i];
|
||
if (DqnChar_IsDigit(exponentCh))
|
||
{
|
||
exponentPow *= 10;
|
||
exponentPow += (buf[i] - '0');
|
||
}
|
||
else
|
||
{
|
||
i = bufSize;
|
||
}
|
||
|
||
i++;
|
||
}
|
||
|
||
// NOTE(doyle): If exponent not specified but this branch occurred,
|
||
// the float string has a malformed scientific notation in the
|
||
// string, i.e. "e" followed by no number.
|
||
DQN_ASSERT_HARD(scientificNotation);
|
||
|
||
if (digitShiftIsPositive)
|
||
{
|
||
numDigitsAfterDecimal -= exponentPow;
|
||
}
|
||
else
|
||
{
|
||
numDigitsAfterDecimal += exponentPow;
|
||
}
|
||
}
|
||
else if (DqnChar_IsDigit(ch))
|
||
{
|
||
numDigitsAfterDecimal += (i32)isPastDecimal;
|
||
rawNumber *= 10;
|
||
rawNumber += (ch - '0');
|
||
}
|
||
else
|
||
{
|
||
break;
|
||
}
|
||
}
|
||
|
||
for (i32 i = 0; i < numDigitsAfterDecimal; i++)
|
||
digitShiftValue *= digitShiftMultiplier;
|
||
|
||
f32 result = (f32)rawNumber;
|
||
if (numDigitsAfterDecimal > 0) result *= digitShiftValue;
|
||
if (isNegative) result *= -1;
|
||
|
||
return result;
|
||
}
|
||
|
||
/*
|
||
Encoding
|
||
The following byte sequences are used to represent a character. The sequence
|
||
to be used depends on the UCS code number of the character:
|
||
|
||
The extra 1's are the headers used to identify the string as a UTF-8 string.
|
||
UCS [0x00000000, 0x0000007F] -> UTF-8 0xxxxxxx
|
||
UCS [0x00000080, 0x000007FF] -> UTF-8 110xxxxx 10xxxxxx
|
||
UCS [0x00000800, 0x0000FFFF] -> UTF-8 1110xxxx 10xxxxxx 10xxxxxx
|
||
UCS [0x00010000, 0x001FFFFF] -> UTF-8 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx
|
||
UCS [0x00200000, 0x03FFFFFF] -> N/A 111110xx 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx
|
||
UCS [0x04000000, 0x7FFFFFFF] -> N/A 1111110x 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx
|
||
|
||
The xxx bit positions are filled with the bits of the character code number
|
||
in binary representation. Only the shortest possible multibyte sequence
|
||
which can represent the code number of the character can be used.
|
||
|
||
The UCS code values 0xd800–0xdfff (UTF-16 surrogates) as well as 0xfffe and
|
||
0xffff (UCS noncharacters) should not appear in conforming UTF-8 streams.
|
||
*/
|
||
DQN_FILE_SCOPE u32 Dqn_UCSToUTF8(u32 *const dest, const u32 character)
|
||
{
|
||
if (!dest) return 0;
|
||
|
||
u8 *bytePtr = (u8 *)dest;
|
||
|
||
// Character is within ASCII range, so it's an ascii character
|
||
// UTF Bit Arrangement: 0xxxxxxx
|
||
// Character : 0xxxxxxx
|
||
if (character >= 0 && character < 0x80)
|
||
{
|
||
bytePtr[0] = (u8)character;
|
||
return 1;
|
||
}
|
||
|
||
// UTF Header Bits : 11000000 00xxxxxx
|
||
// UTF Bit Arrangement: 000xxxxx 00xxxxxx
|
||
// Character : 00000xxx xxxxxxxx
|
||
if (character < 0x800)
|
||
{
|
||
// Add the 2nd byte, 6 bits, OR the 0xC0 (11000000) header bits
|
||
bytePtr[1] = (u8)((character >> 6) | 0xC0);
|
||
|
||
// Add the 1st byte, 6 bits, plus the 0x80 (10000000) header bits
|
||
bytePtr[0] = (u8)((character & 0x3F) | 0x80);
|
||
|
||
return 2;
|
||
}
|
||
|
||
// UTF Header Bits : 11100000 10000000 10000000
|
||
// UTF Bit Arrangement : 0000xxxx 00xxxxxx 00xxxxxx
|
||
// Character : 00000000 xxxxxxxx xxxxxxxx
|
||
if (character < 0x10000)
|
||
{
|
||
// Add the 3rd byte, 4 bits, OR the 0xE0 (11100000) header bits
|
||
bytePtr[2] = (u8)((character >> 12) | 0xE0);
|
||
|
||
// Add the 2nd byte, 6 bits, OR the 0x80 (10000000) header bits
|
||
bytePtr[1] = (u8)((character >> 6) | 0x80);
|
||
|
||
// Add the 1st byte, 6 bits, plus the 0x80 (10000000) header bits
|
||
bytePtr[0] = (u8)((character & 0x3F) | 0x80);
|
||
|
||
return 3;
|
||
}
|
||
|
||
// UTF Header Bits : 11110000 10000000 10000000 10000000
|
||
// UTF Bit Arrangement : 00000xxx 00xxxxxx 00xxxxxx 00xxxxxx
|
||
// Character : 00000000 00000xxx xxxxxxxx xxxxxxxx
|
||
if (character < 0x110000)
|
||
{
|
||
// Add the 4th byte, 3 bits, OR the 0xF0 (11110000) header bits
|
||
bytePtr[3] = (u8)((character >> 18) | 0xF0);
|
||
|
||
// Add the 3rd byte, 6 bits, OR the 0x80 (10000000) header bits
|
||
bytePtr[2] = (u8)(((character >> 12) & 0x3F) | 0x80);
|
||
|
||
// Add the 2nd byte, 6 bits, plus the 0x80 (10000000) header bits
|
||
bytePtr[1] = (u8)(((character >> 6) & 0x3F) | 0x80);
|
||
|
||
// Add the 2nd byte, 6 bits, plus the 0x80 (10000000) header bits
|
||
bytePtr[0] = (u8)((character & 0x3F) | 0x80);
|
||
|
||
return 4;
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
DQN_FILE_SCOPE u32 Dqn_UTF8ToUCS(u32 *const dest, const u32 character)
|
||
{
|
||
if (!dest) return 0;
|
||
|
||
const u32 HEADER_BITS_4_BYTES = 0xF0808080u;
|
||
const u32 HEADER_BITS_3_BYTES = 0xE08080u;
|
||
const u32 HEADER_BITS_2_BYTES = 0xC000u;
|
||
const u32 HEADER_BITS_1_BYTE = 0x80u;
|
||
|
||
// UTF Header Bits : 11110000 10000000 10000000 10000000
|
||
// UTF Bit Arrangement : 00000xxx 00xxxxxx 00xxxxxx 00xxxxxx
|
||
// UCS : 00000000 00000xxx xxxxxxxx xxxxxxxx
|
||
if ((character & HEADER_BITS_4_BYTES) == HEADER_BITS_4_BYTES)
|
||
{
|
||
u32 utfWithoutHeader = HEADER_BITS_4_BYTES ^ character;
|
||
|
||
u32 firstByte = utfWithoutHeader & 0x3F;
|
||
u32 secondByte = (utfWithoutHeader >> 8) & 0x3F;
|
||
u32 thirdByte = (utfWithoutHeader >> 16) & 0x3F;
|
||
u32 fourthByte = utfWithoutHeader >> 24;
|
||
|
||
u32 result =
|
||
(fourthByte << 18 | thirdByte << 12 | secondByte << 6 | firstByte);
|
||
*dest = result;
|
||
|
||
return 4;
|
||
}
|
||
|
||
// UTF Header Bits : 11100000 10000000 10000000
|
||
// UTF Bit Arrangement : 0000xxxx 00xxxxxx 00xxxxxx
|
||
// UCS : 00000000 xxxxxxxx xxxxxxxx
|
||
if ((character & HEADER_BITS_3_BYTES) == HEADER_BITS_3_BYTES)
|
||
{
|
||
u32 utfWithoutHeader = HEADER_BITS_3_BYTES ^ character;
|
||
|
||
u32 firstByte = utfWithoutHeader & 0x3F;
|
||
u32 secondByte = (utfWithoutHeader >> 8) & 0x3F;
|
||
u32 thirdByte = utfWithoutHeader >> 16;
|
||
|
||
u32 result = (thirdByte << 12 | secondByte << 6 | firstByte);
|
||
*dest = result;
|
||
|
||
return 3;
|
||
}
|
||
|
||
// UTF Header Bits : 11000000 00xxxxxx
|
||
// UTF Bit Arrangement: 000xxxxx 00xxxxxx
|
||
// UCS : 00000xxx xxxxxxxx
|
||
if ((character & HEADER_BITS_2_BYTES) == HEADER_BITS_2_BYTES)
|
||
{
|
||
u32 utfWithoutHeader = HEADER_BITS_2_BYTES ^ character;
|
||
|
||
u32 firstByte = utfWithoutHeader & 0x3F;
|
||
u32 secondByte = utfWithoutHeader >> 8;
|
||
|
||
u32 result = (secondByte << 6 | firstByte);
|
||
*dest = result;
|
||
|
||
return 2;
|
||
}
|
||
|
||
// Character is within ASCII range, so it's an ascii character
|
||
// UTF Bit Arrangement: 0xxxxxxx
|
||
// UCS : 0xxxxxxx
|
||
if ((character & HEADER_BITS_1_BYTE) == 0)
|
||
{
|
||
u32 firstByte = (character & 0x3F);
|
||
*dest = firstByte;
|
||
|
||
return 1;
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// #DqnWChar Implementation
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
DQN_FILE_SCOPE bool DqnWChar_IsDigit(const wchar_t c)
|
||
{
|
||
if (c >= L'0' && c <= L'9') return true;
|
||
return false;
|
||
}
|
||
|
||
DQN_FILE_SCOPE wchar_t DqnWChar_ToLower(const wchar_t c)
|
||
{
|
||
if (c >= L'A' && c <= L'Z')
|
||
{
|
||
i32 shiftOffset = L'a' - L'A';
|
||
return (c + (wchar_t)shiftOffset);
|
||
}
|
||
|
||
return c;
|
||
}
|
||
|
||
DQN_FILE_SCOPE wchar_t *DqnWChar_SkipWhitespace(wchar_t *ptr)
|
||
{
|
||
while (ptr && (*ptr == ' ' || *ptr == '\r' || *ptr == '\n')) ptr++;
|
||
return ptr;
|
||
}
|
||
|
||
DQN_FILE_SCOPE wchar_t *DqnWChar_FindLastChar(wchar_t *ptr, const wchar_t ch, i32 len, u32 *const lenToChar)
|
||
{
|
||
for (i32 i = len - 1; i >= 0; i--)
|
||
{
|
||
if (ptr[i] == ch)
|
||
{
|
||
if (lenToChar) *lenToChar = (u32)len - i;
|
||
return &ptr[i];
|
||
}
|
||
}
|
||
|
||
return nullptr;
|
||
}
|
||
|
||
DQN_FILE_SCOPE i32 DqnWChar_GetNextLine(wchar_t *ptr, i32 *lineLength)
|
||
{
|
||
i32 len = 0;
|
||
ptr = DqnWChar_SkipWhitespace(ptr);
|
||
|
||
// Advance pointer to first new line
|
||
while (ptr && *ptr != 0 && *ptr != '\r' && *ptr != '\n')
|
||
{
|
||
ptr++;
|
||
len++;
|
||
}
|
||
|
||
if (!ptr || *ptr == 0) return -1;
|
||
|
||
// Destroy all new lines
|
||
i32 extraChars = 0;
|
||
while (ptr && (*ptr == '\r' || *ptr == '\n' || *ptr == ' '))
|
||
{
|
||
*ptr = 0;
|
||
ptr++;
|
||
extraChars++;
|
||
}
|
||
|
||
if (lineLength) *lineLength = len;
|
||
return len + extraChars;
|
||
}
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// #DqnWStr Implementation
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
DQN_FILE_SCOPE i32 DqnWStr_Cmp(const wchar_t *const a, const wchar_t *const b)
|
||
{
|
||
if (!a && !b) return -1;
|
||
if (!a) return -1;
|
||
if (!b) return -1;
|
||
|
||
const wchar_t *aPtr = a;
|
||
const wchar_t *bPtr = b;
|
||
|
||
while ((*aPtr) == (*bPtr))
|
||
{
|
||
if (!(*aPtr)) return 0;
|
||
aPtr++;
|
||
bPtr++;
|
||
}
|
||
|
||
return (((*aPtr) < (*bPtr)) ? -1 : 1);
|
||
}
|
||
|
||
DQN_FILE_SCOPE i32 DqnWStr_FindFirstOccurence(const wchar_t *const src, const i32 srcLen,
|
||
const wchar_t *const find, const i32 findLen)
|
||
{
|
||
if (!src || !find) return -1;
|
||
if (srcLen == 0 || findLen == 0) return -1;
|
||
if (srcLen < findLen) return -1;
|
||
|
||
for (i32 indexIntoSrc = 0; indexIntoSrc < srcLen; indexIntoSrc++)
|
||
{
|
||
// NOTE: As we scan through, if the src string we index into becomes
|
||
// shorter than the substring we're checking then the substring is not
|
||
// contained in the src string.
|
||
i32 remainingLenInSrcStr = srcLen - indexIntoSrc;
|
||
if (remainingLenInSrcStr < findLen) break;
|
||
|
||
const wchar_t *srcSubStr = &src[indexIntoSrc];
|
||
i32 index = 0;
|
||
for (;;)
|
||
{
|
||
if (DqnWChar_ToLower(srcSubStr[index]) ==
|
||
DqnWChar_ToLower(find[index]))
|
||
{
|
||
index++;
|
||
if (index >= findLen || !find[index])
|
||
{
|
||
return indexIntoSrc;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
// NOTE(doyle): We have early exit, if we reach here, then the substring was
|
||
// not found.
|
||
return -1;
|
||
}
|
||
|
||
DQN_FILE_SCOPE bool DqnWStr_HasSubstring(const wchar_t *const src, const i32 srcLen,
|
||
const wchar_t *const find, const i32 findLen)
|
||
{
|
||
if (DqnWStr_FindFirstOccurence(src, srcLen, find, findLen) == -1)
|
||
return false;
|
||
|
||
return true;
|
||
}
|
||
|
||
DQN_FILE_SCOPE i32 DqnWStr_Len(const wchar_t *const a)
|
||
{
|
||
i32 result = 0;
|
||
while (a && a[result]) result++;
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE i32 DqnWStr_LenDelimitWith(const wchar_t *a, const wchar_t delimiter)
|
||
{
|
||
i32 result = 0;
|
||
while (a && a[result] && a[result] != delimiter) result++;
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE void DqnWStr_Reverse(wchar_t *const buf, const u32 bufSize)
|
||
{
|
||
if (!buf) return;
|
||
i32 mid = bufSize / 2;
|
||
|
||
for (i32 i = 0; i < mid; i++)
|
||
{
|
||
wchar_t tmp = buf[i];
|
||
buf[i] = buf[(bufSize - 1) - i];
|
||
buf[(bufSize - 1) - i] = tmp;
|
||
}
|
||
}
|
||
|
||
DQN_FILE_SCOPE i32 Dqn_WStrToI32(const wchar_t *const buf, const i32 bufSize)
|
||
{
|
||
if (!buf || bufSize == 0) return 0;
|
||
|
||
i32 index = 0;
|
||
bool isNegative = false;
|
||
if (buf[index] == L'-' || buf[index] == L'+')
|
||
{
|
||
if (buf[index] == L'-') isNegative = true;
|
||
index++;
|
||
}
|
||
else if (!DqnWChar_IsDigit(buf[index]))
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
i32 result = 0;
|
||
for (i32 i = index; i < bufSize; i++)
|
||
{
|
||
if (DqnWChar_IsDigit(buf[i]))
|
||
{
|
||
result *= 10;
|
||
result += (buf[i] - L'0');
|
||
}
|
||
else
|
||
{
|
||
break;
|
||
}
|
||
}
|
||
|
||
if (isNegative) result *= -1;
|
||
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE i32 Dqn_I32ToWstr(i32 value, wchar_t *buf, i32 bufSize)
|
||
{
|
||
if (!buf || bufSize == 0) return 0;
|
||
|
||
if (value == 0)
|
||
{
|
||
buf[0] = L'0';
|
||
return 0;
|
||
}
|
||
|
||
// NOTE(doyle): Max 32bit integer (+-)2147483647
|
||
i32 charIndex = 0;
|
||
bool negative = false;
|
||
if (value < 0) negative = true;
|
||
|
||
if (negative) buf[charIndex++] = L'-';
|
||
|
||
i32 val = DQN_ABS(value);
|
||
while (val != 0 && charIndex < bufSize)
|
||
{
|
||
i32 rem = val % 10;
|
||
buf[charIndex++] = (u8)rem + '0';
|
||
val /= 10;
|
||
}
|
||
|
||
// NOTE(doyle): If string is negative, we only want to reverse starting
|
||
// from the second character, so we don't put the negative sign at the end
|
||
if (negative)
|
||
{
|
||
DqnWStr_Reverse(buf + 1, charIndex - 1);
|
||
}
|
||
else
|
||
{
|
||
DqnWStr_Reverse(buf, charIndex);
|
||
}
|
||
|
||
return charIndex;
|
||
}
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// #DqnString Impleemntation
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
DQN_FILE_SCOPE bool DqnString::InitSize(const i32 size, const DqnMemAPI api)
|
||
{
|
||
size_t allocSize = sizeof(*(this->str)) * (size + 1);
|
||
DqnMemAPI::Request info = DqnMemAPI::RequestAlloc(api, allocSize);
|
||
this->str = (char *)api.callback(info);
|
||
|
||
if (!this->str) return false;
|
||
|
||
this->len = 0;
|
||
this->max = size;
|
||
this->memAPI = api;
|
||
return true;
|
||
}
|
||
|
||
DQN_FILE_SCOPE bool DqnString::InitFixedMem(char *const memory, const i32 sizeInBytes)
|
||
{
|
||
if (!memory || sizeInBytes == 0) return false;
|
||
|
||
this->str = (char *)memory;
|
||
this->len = 0;
|
||
this->max = sizeInBytes - 1;
|
||
this->memAPI = {};
|
||
|
||
return true;
|
||
}
|
||
|
||
DQN_FILE_SCOPE bool DqnString::InitLiteral(const char *const cstr, const DqnMemAPI api)
|
||
{
|
||
i32 utf8LenInBytes = 0;
|
||
this->len = DqnStr_LenUTF8((u32 *)cstr, &utf8LenInBytes);
|
||
|
||
size_t allocSize = sizeof(*(this->str)) * (utf8LenInBytes + 1);
|
||
DqnMemAPI::Request info = DqnMemAPI::RequestAlloc(api, allocSize);
|
||
this->str = (char *)api.callback(info);
|
||
if (!this->str) return false;
|
||
|
||
this->max = this->len;
|
||
this->memAPI = api;
|
||
|
||
for (i32 i = 0; i < this->len; i++) this->str[i] = cstr[i];
|
||
|
||
this->str[this->len] = 0;
|
||
|
||
return true;
|
||
}
|
||
|
||
DQN_FILE_SCOPE bool DqnString::InitWLiteral(const wchar_t *const cstr, const DqnMemAPI api)
|
||
{
|
||
#if defined(DQN_IS_WIN32) && defined(DQN_WIN32_IMPLEMENTATION)
|
||
i32 requiredLen = DqnWin32_WCharToUTF8(cstr, nullptr, 0);
|
||
|
||
this->len = requiredLen - 1;
|
||
|
||
size_t allocSize = sizeof(*(this->str)) * (this->len + 1);
|
||
DqnMemAPI::Request info = DqnMemAPI::RequestAlloc(api, allocSize);
|
||
this->str = (char *)api.callback(info);
|
||
if (!this->str) return false;
|
||
|
||
this->max = this->len;
|
||
this->memAPI = api;
|
||
|
||
i32 convertResult = DqnWin32_WCharToUTF8(cstr, this->str, this->len + 1);
|
||
DQN_ASSERT(convertResult != -1);
|
||
|
||
this->str[this->len] = 0;
|
||
return true;
|
||
|
||
#else
|
||
DQN_ASSERT_HARD(DQN_INVALID_CODE_PATH);
|
||
return false;
|
||
|
||
#endif
|
||
}
|
||
|
||
DQN_FILE_SCOPE bool DqnString::InitLiteralNoAlloc(char *const cstr, i32 cstrLen)
|
||
{
|
||
if (!cstr) return false;
|
||
|
||
this->str = cstr;
|
||
if (cstrLen == -1)
|
||
{
|
||
i32 utf8LenInBytes = 0;
|
||
DqnStr_LenUTF8((u32 *)cstr, &utf8LenInBytes);
|
||
this->len = utf8LenInBytes;
|
||
}
|
||
else
|
||
{
|
||
this->len = cstrLen;
|
||
}
|
||
|
||
this->max = this->len;
|
||
|
||
return true;
|
||
}
|
||
|
||
DQN_FILE_SCOPE bool DqnString::Expand(const i32 newMax)
|
||
{
|
||
if (!this->memAPI.callback) return false;
|
||
if (newMax < this->max) return true;
|
||
|
||
size_t allocSize = sizeof(*(this->str)) * (newMax + 1);
|
||
DqnMemAPI::Request info = {};
|
||
|
||
if (this->str)
|
||
{
|
||
info = DqnMemAPI::RequestRealloc(this->memAPI, this->str, this->len, allocSize);
|
||
}
|
||
else
|
||
{
|
||
info = DqnMemAPI::RequestAlloc(this->memAPI, allocSize);
|
||
}
|
||
|
||
u8 *result = this->memAPI.callback(info);
|
||
if (result)
|
||
{
|
||
this->str = (char *)result;
|
||
this->max = newMax;
|
||
return true;
|
||
}
|
||
|
||
return false;
|
||
}
|
||
|
||
DQN_FILE_SCOPE bool DqnStringInternal_AppendCStr(DqnString *const str, const char *const cstr,
|
||
const i32 bytesToCopy)
|
||
{
|
||
|
||
// Check and reserve space if needed
|
||
i32 totalLen = str->len + bytesToCopy;
|
||
if (totalLen > str->max)
|
||
{
|
||
bool result = str->Expand(totalLen);
|
||
if (!result) return false;
|
||
}
|
||
|
||
// Append
|
||
for (i32 i = 0; i < bytesToCopy; i++) str->str[str->len + i] = cstr[i];
|
||
|
||
str->len = totalLen;
|
||
str->str[totalLen] = 0;
|
||
return true;
|
||
}
|
||
|
||
DQN_FILE_SCOPE bool DqnString::AppendCStr(const char *const cstr, i32 bytesToCopy)
|
||
{
|
||
i32 cstrLen = 0;
|
||
if (bytesToCopy == -1)
|
||
{
|
||
i32 utf8LenInBytes = 0;
|
||
DqnStr_LenUTF8((u32 *)cstr, &utf8LenInBytes);
|
||
cstrLen = utf8LenInBytes;
|
||
}
|
||
else
|
||
{
|
||
cstrLen = bytesToCopy;
|
||
}
|
||
|
||
bool result = DqnStringInternal_AppendCStr(this, cstr, cstrLen);
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE bool DqnString::AppendStr(const DqnString strToAppend, i32 bytesToCopy)
|
||
{
|
||
i32 cstrLen = (bytesToCopy == -1) ? strToAppend.len : bytesToCopy;
|
||
bool result = DqnStringInternal_AppendCStr(this, strToAppend.str, cstrLen);
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE void DqnString::Clear()
|
||
{
|
||
this->len = 0;
|
||
this->str[0] = 0;
|
||
}
|
||
|
||
DQN_FILE_SCOPE void DqnString::Free()
|
||
{
|
||
if (this->str)
|
||
{
|
||
if (this->memAPI.callback)
|
||
{
|
||
DqnMemAPI::Request info =
|
||
DqnMemAPI::RequestFree(this->memAPI, this->str, this->len);
|
||
this->memAPI.callback(info);
|
||
}
|
||
|
||
this->str = nullptr;
|
||
this->len = 0;
|
||
this->max = 0;
|
||
}
|
||
}
|
||
|
||
DQN_FILE_SCOPE i32 DqnString::ToWCharUseBuf(wchar_t *const buf, const i32 bufSize)
|
||
{
|
||
#if defined(DQN_IS_WIN32) && defined(DQN_WIN32_IMPLEMENTATION)
|
||
i32 result = DqnWin32_UTF8ToWChar(this->str, buf, bufSize);
|
||
return result;
|
||
|
||
#else
|
||
DQN_ASSERT_HARD(DQN_INVALID_CODE_PATH);
|
||
return -1;
|
||
|
||
#endif
|
||
}
|
||
|
||
DQN_FILE_SCOPE wchar_t *DqnString::ToWChar(const DqnMemAPI api)
|
||
{
|
||
// TODO(doyle): Should the "in" string allow specifyign len? probably
|
||
// Otherwise a c-string and a literal initiated string might have different lengths
|
||
// to wchar will produce an unintuitive output
|
||
#if defined(DQN_IS_WIN32) && defined(DQN_WIN32_IMPLEMENTATION)
|
||
i32 requiredLenInclNull = DqnWin32_UTF8ToWChar(this->str, nullptr, 0);
|
||
|
||
i32 allocSize = sizeof(wchar_t) * requiredLenInclNull;
|
||
DqnMemAPI::Request info = DqnMemAPI::RequestAlloc(api, allocSize);
|
||
wchar_t *result = (wchar_t *)api.callback(info);
|
||
if (!result) return nullptr;
|
||
|
||
DqnWin32_UTF8ToWChar(this->str, result, requiredLenInclNull);
|
||
result[requiredLenInclNull - 1] = 0;
|
||
return result;
|
||
|
||
#else
|
||
DQN_ASSERT_HARD(DQN_INVALID_CODE_PATH);
|
||
return nullptr;
|
||
|
||
#endif
|
||
}
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// #DqnRnd Implementation
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// Public Domain library with thanks to Mattias Gustavsson
|
||
// https://github.com/mattiasgustavsson/libs/blob/master/docs/rnd.md
|
||
|
||
// Convert a randomized u32 value to a float value x in the range 0.0f <= x
|
||
// < 1.0f. Contributed by Jonatan Hedborg
|
||
|
||
// NOTE: This is to abide to strict aliasing rules.
|
||
union DqnRndInternal_U32F32
|
||
{
|
||
u32 unsigned32;
|
||
f32 float32;
|
||
};
|
||
|
||
FILE_SCOPE f32 DqnRndInternal_F32NormalizedFromU32(u32 value)
|
||
{
|
||
u32 exponent = 127;
|
||
u32 mantissa = value >> 9;
|
||
|
||
union DqnRndInternal_U32F32 uf;
|
||
uf.unsigned32 = (exponent << 23 | mantissa);
|
||
return uf.float32 - 1.0f;
|
||
}
|
||
|
||
FILE_SCOPE u64 DqnRndInternal_Murmur3Avalanche64(u64 h)
|
||
{
|
||
h ^= h >> 33;
|
||
h *= 0xff51afd7ed558ccd;
|
||
h ^= h >> 33;
|
||
h *= 0xc4ceb9fe1a85ec53;
|
||
h ^= h >> 33;
|
||
return h;
|
||
}
|
||
|
||
#if defined(DQN_UNIX_PLATFORM)
|
||
#include <x86intrin.h> // __rdtsc
|
||
#endif
|
||
|
||
FILE_SCOPE u32 DqnRndInternal_MakeSeed()
|
||
{
|
||
#if defined(DQN_WIN32_PLATFORM) || defined(DQN_UNIX_PLATFORM)
|
||
i64 numClockCycles = __rdtsc();
|
||
return (u32)numClockCycles;
|
||
#elif __ANDROID__
|
||
DQN_ASSERT_MSG(DQN_INVALID_CODE_PATH, "Android path not implemented yet");
|
||
return 0;
|
||
#else
|
||
DQN_ASSERT_MSG(DQN_INVALID_CODE_PATH, "Non Win32 path not implemented yet");
|
||
return 0;
|
||
#endif
|
||
}
|
||
|
||
void DqnRndPCG::InitWithSeed(u32 seed)
|
||
{
|
||
u64 value = (((u64)seed) << 1ULL) | 1ULL;
|
||
value = DqnRndInternal_Murmur3Avalanche64(value);
|
||
this->state[0] = 0U;
|
||
this->state[1] = (value << 1ULL) | 1ULL;
|
||
this->Next();
|
||
this->state[0] += DqnRndInternal_Murmur3Avalanche64(value);
|
||
this->Next();
|
||
}
|
||
|
||
void DqnRndPCG::Init()
|
||
{
|
||
u32 seed = DqnRndInternal_MakeSeed();
|
||
this->InitWithSeed(seed);
|
||
}
|
||
|
||
u32 DqnRndPCG::Next()
|
||
{
|
||
u64 oldstate = this->state[0];
|
||
this->state[0] = oldstate * 0x5851f42d4c957f2dULL + this->state[1];
|
||
u32 xorshifted = (u32)(((oldstate >> 18ULL) ^ oldstate) >> 27ULL);
|
||
u32 rot = (u32)(oldstate >> 59ULL);
|
||
return (xorshifted >> rot) | (xorshifted << ((-(i32)rot) & 31));
|
||
}
|
||
|
||
f32 DqnRndPCG::Nextf()
|
||
{
|
||
f32 result = DqnRndInternal_F32NormalizedFromU32(this->Next());
|
||
return result;
|
||
}
|
||
|
||
i32 DqnRndPCG::Range(i32 min, i32 max)
|
||
{
|
||
i32 const range = (max - min) + 1;
|
||
if (range <= 0) return min;
|
||
|
||
i32 const value = (i32)(this->Nextf() * range);
|
||
i32 result = min + value;
|
||
return result;
|
||
}
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// #Dqn_* Implementation
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// #External Code
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// #DqnSprintf Implementation - STB_Sprintf
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
/*
|
||
Single file sprintf replacement.
|
||
|
||
Originally written by Jeff Roberts at RAD Game Tools - 2015/10/20. Hereby
|
||
placed in public domain.
|
||
|
||
This is a full sprintf replacement that supports everything that the C runtime
|
||
sprintfs support, including float/double, 64-bit integers, hex floats, field
|
||
parameters (%*.*d stuff), length reads backs, etc.
|
||
|
||
Why would you need this if sprintf already exists? Well, first off, it's *much*
|
||
faster (see below). It's also much smaller than the CRT versions
|
||
code-space-wise. We've also added some simple improvements that are super handy
|
||
(commas in thousands, callbacks at buffer full, for example). Finally, the
|
||
format strings for MSVC and GCC differ for 64-bit integers (among other small
|
||
things), so this lets you use the same format strings in cross platform code.
|
||
|
||
It uses the standard single file trick of being both the header file and the
|
||
source itself. If you just include it normally, you just get the header file
|
||
function definitions. To get the code, you include it from a C or C++ file and
|
||
define STB_SPRINTF_IMPLEMENTATION first.
|
||
|
||
It only uses va_args macros from the C runtime to do it's work. It does cast
|
||
doubles to S64s and shifts and divides U64s, which does drag in CRT code on most
|
||
platforms.
|
||
|
||
It compiles to roughly 8K with float support, and 4K without. As a comparison,
|
||
when using MSVC static libs, calling sprintf drags in 16K.
|
||
|
||
PERFORMANCE vs MSVC 2008 32-/64-bit (GCC is even slower than MSVC):
|
||
===================================================================
|
||
"%d" across all 32-bit ints (4.8x/4.0x faster than 32-/64-bit MSVC)
|
||
"%24d" across all 32-bit ints (4.5x/4.2x faster)
|
||
"%x" across all 32-bit ints (4.5x/3.8x faster)
|
||
"%08x" across all 32-bit ints (4.3x/3.8x faster)
|
||
"%f" across e-10 to e+10 floats (7.3x/6.0x faster)
|
||
"%e" across e-10 to e+10 floats (8.1x/6.0x faster)
|
||
"%g" across e-10 to e+10 floats (10.0x/7.1x faster)
|
||
"%f" for values near e-300 (7.9x/6.5x faster)
|
||
"%f" for values near e+300 (10.0x/9.1x faster)
|
||
"%e" for values near e-300 (10.1x/7.0x faster)
|
||
"%e" for values near e+300 (9.2x/6.0x faster)
|
||
"%.320f" for values near e-300 (12.6x/11.2x faster)
|
||
"%a" for random values (8.6x/4.3x faster)
|
||
"%I64d" for 64-bits with 32-bit values (4.8x/3.4x faster)
|
||
"%I64d" for 64-bits > 32-bit values (4.9x/5.5x faster)
|
||
"%s%s%s" for 64 char strings (7.1x/7.3x faster)
|
||
"...512 char string..." ( 35.0x/32.5x faster!)
|
||
*/
|
||
|
||
#ifdef __GNUC__
|
||
#pragma GCC diagnostic push
|
||
#pragma GCC diagnostic ignored "-Wmisleading-indentation"
|
||
#pragma GCC diagnostic ignored "-Wstrict-aliasing"
|
||
#endif
|
||
|
||
#include <stdlib.h> // for va_arg()
|
||
|
||
#define stbsp__uint32 unsigned int
|
||
#define stbsp__int32 signed int
|
||
|
||
#ifdef _MSC_VER
|
||
#define stbsp__uint64 unsigned __int64
|
||
#define stbsp__int64 signed __int64
|
||
#else
|
||
#define stbsp__uint64 unsigned long long
|
||
#define stbsp__int64 signed long long
|
||
#endif
|
||
#define stbsp__uint16 unsigned short
|
||
|
||
#ifndef stbsp__uintptr
|
||
#if defined(__ppc64__) || defined(__aarch64__) || defined(_M_X64) || defined(__x86_64__) || defined(__x86_64)
|
||
#define stbsp__uintptr stbsp__uint64
|
||
#else
|
||
#define stbsp__uintptr stbsp__uint32
|
||
#endif
|
||
#endif
|
||
|
||
#ifndef STB_SPRINTF_MSVC_MODE // used for MSVC2013 and earlier (MSVC2015 matches GCC)
|
||
#if defined(_MSC_VER) && (_MSC_VER<1900)
|
||
#define STB_SPRINTF_MSVC_MODE
|
||
#endif
|
||
#endif
|
||
|
||
#ifdef STB_SPRINTF_NOUNALIGNED // define this before inclusion to force stbsp_sprintf to always use aligned accesses
|
||
#define STBSP__UNALIGNED(code)
|
||
#else
|
||
#define STBSP__UNALIGNED(code) code
|
||
#endif
|
||
|
||
#ifndef STB_SPRINTF_NOFLOAT
|
||
// internal float utility functions
|
||
static stbsp__int32 stbsp__real_to_str( char const * * start, stbsp__uint32 * len, char *out, stbsp__int32 * decimal_pos, double value, stbsp__uint32 frac_digits );
|
||
static stbsp__int32 stbsp__real_to_parts( stbsp__int64 * bits, stbsp__int32 * expo, double value );
|
||
#define STBSP__SPECIAL 0x7000
|
||
#endif
|
||
|
||
static char stbsp__period='.';
|
||
static char stbsp__comma=',';
|
||
static char stbsp__digitpair[201]="00010203040506070809101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899";
|
||
|
||
STBSP__PUBLICDEF void STB_SPRINTF_DECORATE( set_separators )( char pcomma, char pperiod )
|
||
{
|
||
stbsp__period=pperiod;
|
||
stbsp__comma=pcomma;
|
||
}
|
||
|
||
#define STBSP__LEFTJUST 1
|
||
#define STBSP__LEADINGPLUS 2
|
||
#define STBSP__LEADINGSPACE 4
|
||
#define STBSP__LEADING_0X 8
|
||
#define STBSP__LEADINGZERO 16
|
||
#define STBSP__INTMAX 32
|
||
#define STBSP__TRIPLET_COMMA 64
|
||
#define STBSP__NEGATIVE 128
|
||
#define STBSP__METRIC_SUFFIX 256
|
||
#define STBSP__HALFWIDTH 512
|
||
#define STBSP__METRIC_NOSPACE 1024
|
||
#define STBSP__METRIC_1024 2048
|
||
#define STBSP__METRIC_JEDEC 4096
|
||
|
||
static void stbsp__lead_sign(stbsp__uint32 fl, char *sign)
|
||
{
|
||
sign[0] = 0;
|
||
if (fl&STBSP__NEGATIVE) {
|
||
sign[0]=1;
|
||
sign[1]='-';
|
||
} else if (fl&STBSP__LEADINGSPACE) {
|
||
sign[0]=1;
|
||
sign[1]=' ';
|
||
} else if (fl&STBSP__LEADINGPLUS) {
|
||
sign[0]=1;
|
||
sign[1]='+';
|
||
}
|
||
}
|
||
|
||
STBSP__PUBLICDEF int STB_SPRINTF_DECORATE( vsprintfcb )( STBSP_SPRINTFCB * callback, void * user, char * buf, char const * fmt, va_list va )
|
||
{
|
||
static char hex[]="0123456789abcdefxp";
|
||
static char hexu[]="0123456789ABCDEFXP";
|
||
char * bf;
|
||
char const * f;
|
||
int tlen = 0;
|
||
|
||
bf = buf;
|
||
f = fmt;
|
||
for(;;)
|
||
{
|
||
stbsp__int32 fw,pr,tz; stbsp__uint32 fl;
|
||
|
||
// macros for the callback buffer stuff
|
||
#define stbsp__chk_cb_bufL(bytes) { int len = (int)(bf-buf); if ((len+(bytes))>=STB_SPRINTF_MIN) { tlen+=len; if (0==(bf=buf=callback(buf,user,len))) goto done; } }
|
||
#define stbsp__chk_cb_buf(bytes) { if ( callback ) { stbsp__chk_cb_bufL(bytes); } }
|
||
#define stbsp__flush_cb() { stbsp__chk_cb_bufL(STB_SPRINTF_MIN-1); } //flush if there is even one byte in the buffer
|
||
#define stbsp__cb_buf_clamp(cl,v) cl = v; if ( callback ) { int lg = STB_SPRINTF_MIN-(int)(bf-buf); if (cl>lg) cl=lg; }
|
||
|
||
// fast copy everything up to the next % (or end of string)
|
||
for(;;)
|
||
{
|
||
while (((stbsp__uintptr)f)&3)
|
||
{
|
||
schk1: if (f[0]=='%') goto scandd;
|
||
schk2: if (f[0]==0) goto endfmt;
|
||
stbsp__chk_cb_buf(1); *bf++=f[0]; ++f;
|
||
}
|
||
for(;;)
|
||
{
|
||
// Check if the next 4 bytes contain %(0x25) or end of string.
|
||
// Using the 'hasless' trick:
|
||
// https://graphics.stanford.edu/~seander/bithacks.html#HasLessInWord
|
||
stbsp__uint32 v,c;
|
||
v=*(stbsp__uint32*)f; c=(~v)&0x80808080;
|
||
if (((v^0x25252525)-0x01010101)&c) goto schk1;
|
||
if ((v-0x01010101)&c) goto schk2;
|
||
if (callback) if ((STB_SPRINTF_MIN-(int)(bf-buf))<4) goto schk1;
|
||
*(stbsp__uint32*)bf=v; bf+=4; f+=4;
|
||
}
|
||
} scandd:
|
||
|
||
++f;
|
||
|
||
// ok, we have a percent, read the modifiers first
|
||
fw = 0; pr = -1; fl = 0; tz = 0;
|
||
|
||
// flags
|
||
for(;;)
|
||
{
|
||
switch(f[0])
|
||
{
|
||
// if we have left justify
|
||
case '-': fl|=STBSP__LEFTJUST; ++f; continue;
|
||
// if we have leading plus
|
||
case '+': fl|=STBSP__LEADINGPLUS; ++f; continue;
|
||
// if we have leading space
|
||
case ' ': fl|=STBSP__LEADINGSPACE; ++f; continue;
|
||
// if we have leading 0x
|
||
case '#': fl|=STBSP__LEADING_0X; ++f; continue;
|
||
// if we have thousand commas
|
||
case '\'': fl|=STBSP__TRIPLET_COMMA; ++f; continue;
|
||
// if we have kilo marker (none->kilo->kibi->jedec)
|
||
case '$':
|
||
if (fl&STBSP__METRIC_SUFFIX)
|
||
{
|
||
if (fl&STBSP__METRIC_1024)
|
||
{
|
||
fl|=STBSP__METRIC_JEDEC;
|
||
}
|
||
else
|
||
{
|
||
fl|=STBSP__METRIC_1024;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
fl|=STBSP__METRIC_SUFFIX;
|
||
}
|
||
++f; continue;
|
||
// if we don't want space between metric suffix and number
|
||
case '_': fl|=STBSP__METRIC_NOSPACE; ++f; continue;
|
||
// if we have leading zero
|
||
case '0': fl|=STBSP__LEADINGZERO; ++f; goto flags_done;
|
||
default: goto flags_done;
|
||
}
|
||
}
|
||
flags_done:
|
||
|
||
// get the field width
|
||
if ( f[0] == '*' ) {fw = va_arg(va,stbsp__uint32); ++f;} else { while (( f[0] >= '0' ) && ( f[0] <= '9' )) { fw = fw * 10 + f[0] - '0'; f++; } }
|
||
// get the precision
|
||
if ( f[0]=='.' ) { ++f; if ( f[0] == '*' ) {pr = va_arg(va,stbsp__uint32); ++f;} else { pr = 0; while (( f[0] >= '0' ) && ( f[0] <= '9' )) { pr = pr * 10 + f[0] - '0'; f++; } } }
|
||
|
||
// handle integer size overrides
|
||
switch(f[0])
|
||
{
|
||
// are we halfwidth?
|
||
case 'h': fl|=STBSP__HALFWIDTH; ++f; break;
|
||
// are we 64-bit (unix style)
|
||
case 'l': ++f; if ( f[0]=='l') { fl|=STBSP__INTMAX; ++f; } break;
|
||
// are we 64-bit on intmax? (c99)
|
||
case 'j': fl|=STBSP__INTMAX; ++f; break;
|
||
// are we 64-bit on size_t or ptrdiff_t? (c99)
|
||
case 'z': case 't': fl|=((sizeof(char*)==8)?STBSP__INTMAX:0); ++f; break;
|
||
// are we 64-bit (msft style)
|
||
case 'I': if ( ( f[1]=='6') && ( f[2]=='4') ) { fl|=STBSP__INTMAX; f+=3; }
|
||
else if ( ( f[1]=='3') && ( f[2]=='2') ) { f+=3; }
|
||
else { fl|=((sizeof(void*)==8)?STBSP__INTMAX:0); ++f; } break;
|
||
default: break;
|
||
}
|
||
|
||
// handle each replacement
|
||
switch( f[0] )
|
||
{
|
||
#define STBSP__NUMSZ 512 // big enough for e308 (with commas) or e-307
|
||
char num[STBSP__NUMSZ];
|
||
char lead[8];
|
||
char tail[8];
|
||
char *s;
|
||
char const *h;
|
||
stbsp__uint32 l,n,cs;
|
||
stbsp__uint64 n64;
|
||
#ifndef STB_SPRINTF_NOFLOAT
|
||
double fv;
|
||
#endif
|
||
stbsp__int32 dp; char const * sn;
|
||
|
||
case 's':
|
||
// get the string
|
||
s = va_arg(va,char*); if (s==0) s = (char*)"null";
|
||
// get the length
|
||
sn = s;
|
||
for(;;)
|
||
{
|
||
if ((((stbsp__uintptr)sn)&3)==0) break;
|
||
lchk:
|
||
if (sn[0]==0) goto ld;
|
||
++sn;
|
||
}
|
||
n = 0xffffffff;
|
||
if (pr>=0) { n=(stbsp__uint32)(sn-s); if (n>=(stbsp__uint32)pr) goto ld; n=((stbsp__uint32)(pr-n))>>2; }
|
||
while(n)
|
||
{
|
||
stbsp__uint32 v=*(stbsp__uint32*)sn;
|
||
if ((v-0x01010101)&(~v)&0x80808080UL) goto lchk;
|
||
sn+=4;
|
||
--n;
|
||
}
|
||
goto lchk;
|
||
ld:
|
||
|
||
l = (stbsp__uint32) ( sn - s );
|
||
// clamp to precision
|
||
if ( l > (stbsp__uint32)pr ) l = pr;
|
||
lead[0]=0; tail[0]=0; pr = 0; dp = 0; cs = 0;
|
||
// copy the string in
|
||
goto scopy;
|
||
|
||
case 'c': // char
|
||
// get the character
|
||
s = num + STBSP__NUMSZ -1; *s = (char)va_arg(va,int);
|
||
l = 1;
|
||
lead[0]=0; tail[0]=0; pr = 0; dp = 0; cs = 0;
|
||
goto scopy;
|
||
|
||
case 'n': // weird write-bytes specifier
|
||
{ int * d = va_arg(va,int*);
|
||
*d = tlen + (int)( bf - buf ); }
|
||
break;
|
||
|
||
#ifdef STB_SPRINTF_NOFLOAT
|
||
case 'A': // float
|
||
case 'a': // hex float
|
||
case 'G': // float
|
||
case 'g': // float
|
||
case 'E': // float
|
||
case 'e': // float
|
||
case 'f': // float
|
||
va_arg(va,double); // eat it
|
||
s = (char*)"No float";
|
||
l = 8;
|
||
lead[0]=0; tail[0]=0; pr = 0; dp = 0; cs = 0;
|
||
goto scopy;
|
||
#else
|
||
case 'A': // float
|
||
h=hexu;
|
||
goto hexfloat;
|
||
|
||
case 'a': // hex float
|
||
h=hex;
|
||
hexfloat:
|
||
fv = va_arg(va,double);
|
||
if (pr==-1) pr=6; // default is 6
|
||
// read the double into a string
|
||
if ( stbsp__real_to_parts( (stbsp__int64*)&n64, &dp, fv ) )
|
||
fl |= STBSP__NEGATIVE;
|
||
|
||
s = num+64;
|
||
|
||
stbsp__lead_sign(fl, lead);
|
||
|
||
if (dp==-1023) dp=(n64)?-1022:0; else n64|=(((stbsp__uint64)1)<<52);
|
||
n64<<=(64-56);
|
||
if (pr<15) n64+=((((stbsp__uint64)8)<<56)>>(pr*4));
|
||
// add leading chars
|
||
|
||
#ifdef STB_SPRINTF_MSVC_MODE
|
||
*s++='0';*s++='x';
|
||
#else
|
||
lead[1+lead[0]]='0'; lead[2+lead[0]]='x'; lead[0]+=2;
|
||
#endif
|
||
*s++=h[(n64>>60)&15]; n64<<=4;
|
||
if ( pr ) *s++=stbsp__period;
|
||
sn = s;
|
||
|
||
// print the bits
|
||
n = pr; if (n>13) n = 13; if (pr>(stbsp__int32)n) tz=pr-n; pr = 0;
|
||
while(n--) { *s++=h[(n64>>60)&15]; n64<<=4; }
|
||
|
||
// print the expo
|
||
tail[1]=h[17];
|
||
if (dp<0) { tail[2]='-'; dp=-dp;} else tail[2]='+';
|
||
n = (dp>=1000)?6:((dp>=100)?5:((dp>=10)?4:3));
|
||
tail[0]=(char)n;
|
||
for(;;) { tail[n]='0'+dp%10; if (n<=3) break; --n; dp/=10; }
|
||
|
||
dp = (int)(s-sn);
|
||
l = (int)(s-(num+64));
|
||
s = num+64;
|
||
cs = 1 + (3<<24);
|
||
goto scopy;
|
||
|
||
case 'G': // float
|
||
h=hexu;
|
||
goto dosmallfloat;
|
||
|
||
case 'g': // float
|
||
h=hex;
|
||
dosmallfloat:
|
||
fv = va_arg(va,double);
|
||
if (pr==-1) pr=6; else if (pr==0) pr = 1; // default is 6
|
||
// read the double into a string
|
||
if ( stbsp__real_to_str( &sn, &l, num, &dp, fv, (pr-1)|0x80000000 ) )
|
||
fl |= STBSP__NEGATIVE;
|
||
|
||
// clamp the precision and delete extra zeros after clamp
|
||
n = pr;
|
||
if ( l > (stbsp__uint32)pr ) l = pr; while ((l>1)&&(pr)&&(sn[l-1]=='0')) { --pr; --l; }
|
||
|
||
// should we use %e
|
||
if ((dp<=-4)||(dp>(stbsp__int32)n))
|
||
{
|
||
if ( pr > (stbsp__int32)l ) pr = l-1; else if ( pr ) --pr; // when using %e, there is one digit before the decimal
|
||
goto doexpfromg;
|
||
}
|
||
// this is the insane action to get the pr to match %g sematics for %f
|
||
if(dp>0) { pr=(dp<(stbsp__int32)l)?l-dp:0; } else { pr = -dp+((pr>(stbsp__int32)l)?l:pr); }
|
||
goto dofloatfromg;
|
||
|
||
case 'E': // float
|
||
h=hexu;
|
||
goto doexp;
|
||
|
||
case 'e': // float
|
||
h=hex;
|
||
doexp:
|
||
fv = va_arg(va,double);
|
||
if (pr==-1) pr=6; // default is 6
|
||
// read the double into a string
|
||
if ( stbsp__real_to_str( &sn, &l, num, &dp, fv, pr|0x80000000 ) )
|
||
fl |= STBSP__NEGATIVE;
|
||
doexpfromg:
|
||
tail[0]=0;
|
||
stbsp__lead_sign(fl, lead);
|
||
if ( dp == STBSP__SPECIAL ) { s=(char*)sn; cs=0; pr=0; goto scopy; }
|
||
s=num+64;
|
||
// handle leading chars
|
||
*s++=sn[0];
|
||
|
||
if (pr) *s++=stbsp__period;
|
||
|
||
// handle after decimal
|
||
if ((l-1)>(stbsp__uint32)pr) l=pr+1;
|
||
for(n=1;n<l;n++) *s++=sn[n];
|
||
// trailing zeros
|
||
tz = pr-(l-1); pr=0;
|
||
// dump expo
|
||
tail[1]=h[0xe];
|
||
dp -= 1;
|
||
if (dp<0) { tail[2]='-'; dp=-dp;} else tail[2]='+';
|
||
#ifdef STB_SPRINTF_MSVC_MODE
|
||
n = 5;
|
||
#else
|
||
n = (dp>=100)?5:4;
|
||
#endif
|
||
tail[0]=(char)n;
|
||
for(;;) { tail[n]='0'+dp%10; if (n<=3) break; --n; dp/=10; }
|
||
cs = 1 + (3<<24); // how many tens
|
||
goto flt_lead;
|
||
|
||
case 'f': // float
|
||
fv = va_arg(va,double);
|
||
doafloat:
|
||
// do kilos
|
||
if (fl&STBSP__METRIC_SUFFIX)
|
||
{
|
||
double divisor;
|
||
divisor=1000.0f;
|
||
if (fl&STBSP__METRIC_1024) divisor = 1024.0;
|
||
while(fl<0x4000000) { if ((fv<divisor) && (fv>-divisor)) break; fv/=divisor; fl+=0x1000000; }
|
||
}
|
||
if (pr==-1) pr=6; // default is 6
|
||
// read the double into a string
|
||
if ( stbsp__real_to_str( &sn, &l, num, &dp, fv, pr ) )
|
||
fl |= STBSP__NEGATIVE;
|
||
dofloatfromg:
|
||
tail[0]=0;
|
||
stbsp__lead_sign(fl, lead);
|
||
if ( dp == STBSP__SPECIAL ) { s=(char*)sn; cs=0; pr=0; goto scopy; }
|
||
s=num+64;
|
||
|
||
// handle the three decimal varieties
|
||
if (dp<=0)
|
||
{
|
||
stbsp__int32 i;
|
||
// handle 0.000*000xxxx
|
||
*s++='0'; if (pr) *s++=stbsp__period;
|
||
n=-dp; if((stbsp__int32)n>pr) n=pr; i=n; while(i) { if ((((stbsp__uintptr)s)&3)==0) break; *s++='0'; --i; } while(i>=4) { *(stbsp__uint32*)s=0x30303030; s+=4; i-=4; } while(i) { *s++='0'; --i; }
|
||
if ((stbsp__int32)(l+n)>pr) l=pr-n; i=l; while(i) { *s++=*sn++; --i; }
|
||
tz = pr-(n+l);
|
||
cs = 1 + (3<<24); // how many tens did we write (for commas below)
|
||
}
|
||
else
|
||
{
|
||
cs = (fl&STBSP__TRIPLET_COMMA)?((600-(stbsp__uint32)dp)%3):0;
|
||
if ((stbsp__uint32)dp>=l)
|
||
{
|
||
// handle xxxx000*000.0
|
||
n=0; for(;;) { if ((fl&STBSP__TRIPLET_COMMA) && (++cs==4)) { cs = 0; *s++=stbsp__comma; } else { *s++=sn[n]; ++n; if (n>=l) break; } }
|
||
if (n<(stbsp__uint32)dp)
|
||
{
|
||
n = dp - n;
|
||
if ((fl&STBSP__TRIPLET_COMMA)==0) { while(n) { if ((((stbsp__uintptr)s)&3)==0) break; *s++='0'; --n; } while(n>=4) { *(stbsp__uint32*)s=0x30303030; s+=4; n-=4; } }
|
||
while(n) { if ((fl&STBSP__TRIPLET_COMMA) && (++cs==4)) { cs = 0; *s++=stbsp__comma; } else { *s++='0'; --n; } }
|
||
}
|
||
cs = (int)(s-(num+64)) + (3<<24); // cs is how many tens
|
||
if (pr) { *s++=stbsp__period; tz=pr;}
|
||
}
|
||
else
|
||
{
|
||
// handle xxxxx.xxxx000*000
|
||
n=0; for(;;) { if ((fl&STBSP__TRIPLET_COMMA) && (++cs==4)) { cs = 0; *s++=stbsp__comma; } else { *s++=sn[n]; ++n; if (n>=(stbsp__uint32)dp) break; } }
|
||
cs = (int)(s-(num+64)) + (3<<24); // cs is how many tens
|
||
if (pr) *s++=stbsp__period;
|
||
if ((l-dp)>(stbsp__uint32)pr) l=pr+dp;
|
||
while(n<l) { *s++=sn[n]; ++n; }
|
||
tz = pr-(l-dp);
|
||
}
|
||
}
|
||
pr = 0;
|
||
|
||
// handle k,m,g,t
|
||
if (fl&STBSP__METRIC_SUFFIX)
|
||
{
|
||
char idx;
|
||
idx=1;
|
||
if (fl&STBSP__METRIC_NOSPACE)
|
||
idx=0;
|
||
tail[0]=idx;
|
||
tail[1]=' ';
|
||
{
|
||
if (fl>>24)
|
||
{ // SI kilo is 'k', JEDEC and SI kibits are 'K'.
|
||
if (fl&STBSP__METRIC_1024)
|
||
tail[idx+1]="_KMGT"[fl>>24];
|
||
else
|
||
tail[idx+1]="_kMGT"[fl>>24];
|
||
idx++;
|
||
// If printing kibits and not in jedec, add the 'i'.
|
||
if (fl&STBSP__METRIC_1024&&!(fl&STBSP__METRIC_JEDEC))
|
||
{
|
||
tail[idx+1]='i';
|
||
idx++;
|
||
}
|
||
tail[0]=idx;
|
||
}
|
||
}
|
||
};
|
||
|
||
flt_lead:
|
||
// get the length that we copied
|
||
l = (stbsp__uint32) ( s-(num+64) );
|
||
s=num+64;
|
||
goto scopy;
|
||
#endif
|
||
|
||
case 'B': // upper binary
|
||
h = hexu;
|
||
goto binary;
|
||
|
||
case 'b': // lower binary
|
||
h = hex;
|
||
binary:
|
||
lead[0]=0;
|
||
if (fl&STBSP__LEADING_0X) { lead[0]=2;lead[1]='0';lead[2]=h[0xb]; }
|
||
l=(8<<4)|(1<<8);
|
||
goto radixnum;
|
||
|
||
case 'o': // octal
|
||
h = hexu;
|
||
lead[0]=0;
|
||
if (fl&STBSP__LEADING_0X) { lead[0]=1;lead[1]='0'; }
|
||
l=(3<<4)|(3<<8);
|
||
goto radixnum;
|
||
|
||
case 'p': // pointer
|
||
fl |= (sizeof(void*)==8)?STBSP__INTMAX:0;
|
||
pr = sizeof(void*)*2;
|
||
fl &= ~STBSP__LEADINGZERO; // 'p' only prints the pointer with zeros
|
||
// drop through to X
|
||
|
||
case 'X': // upper binary
|
||
h = hexu;
|
||
goto dohexb;
|
||
|
||
case 'x': // lower binary
|
||
h = hex; dohexb:
|
||
l=(4<<4)|(4<<8);
|
||
lead[0]=0;
|
||
if (fl&STBSP__LEADING_0X) { lead[0]=2;lead[1]='0';lead[2]=h[16]; }
|
||
radixnum:
|
||
// get the number
|
||
if ( fl&STBSP__INTMAX )
|
||
n64 = va_arg(va,stbsp__uint64);
|
||
else
|
||
n64 = va_arg(va,stbsp__uint32);
|
||
|
||
s = num + STBSP__NUMSZ; dp = 0;
|
||
// clear tail, and clear leading if value is zero
|
||
tail[0]=0; if (n64==0) { lead[0]=0; if (pr==0) { l=0; cs = ( ((l>>4)&15)) << 24; goto scopy; } }
|
||
// convert to string
|
||
for(;;) { *--s = h[n64&((1<<(l>>8))-1)]; n64>>=(l>>8); if ( ! ( (n64) || ((stbsp__int32) ( (num+STBSP__NUMSZ) - s ) < pr ) ) ) break; if ( fl&STBSP__TRIPLET_COMMA) { ++l; if ((l&15)==((l>>4)&15)) { l&=~15; *--s=stbsp__comma; } } };
|
||
// get the tens and the comma pos
|
||
cs = (stbsp__uint32) ( (num+STBSP__NUMSZ) - s ) + ( ( ((l>>4)&15)) << 24 );
|
||
// get the length that we copied
|
||
l = (stbsp__uint32) ( (num+STBSP__NUMSZ) - s );
|
||
// copy it
|
||
goto scopy;
|
||
|
||
case 'u': // unsigned
|
||
case 'i':
|
||
case 'd': // integer
|
||
// get the integer and abs it
|
||
if ( fl&STBSP__INTMAX )
|
||
{
|
||
stbsp__int64 i64 = va_arg(va,stbsp__int64); n64 = (stbsp__uint64)i64; if ((f[0]!='u') && (i64<0)) { n64=(stbsp__uint64)-i64; fl|=STBSP__NEGATIVE; }
|
||
}
|
||
else
|
||
{
|
||
stbsp__int32 i = va_arg(va,stbsp__int32); n64 = (stbsp__uint32)i; if ((f[0]!='u') && (i<0)) { n64=(stbsp__uint32)-i; fl|=STBSP__NEGATIVE; }
|
||
}
|
||
|
||
#ifndef STB_SPRINTF_NOFLOAT
|
||
if (fl&STBSP__METRIC_SUFFIX) { if (n64<1024) pr=0; else if (pr==-1) pr=1; fv=(double)(stbsp__int64)n64; goto doafloat; }
|
||
#endif
|
||
|
||
// convert to string
|
||
s = num+STBSP__NUMSZ; l=0;
|
||
|
||
for(;;)
|
||
{
|
||
// do in 32-bit chunks (avoid lots of 64-bit divides even with constant denominators)
|
||
char * o=s-8;
|
||
if (n64>=100000000) { n = (stbsp__uint32)( n64 % 100000000); n64 /= 100000000; } else {n = (stbsp__uint32)n64; n64 = 0; }
|
||
if((fl&STBSP__TRIPLET_COMMA)==0) { while(n) { s-=2; *(stbsp__uint16*)s=*(stbsp__uint16*)&stbsp__digitpair[(n%100)*2]; n/=100; } }
|
||
while (n) { if ( ( fl&STBSP__TRIPLET_COMMA) && (l++==3) ) { l=0; *--s=stbsp__comma; --o; } else { *--s=(char)(n%10)+'0'; n/=10; } }
|
||
if (n64==0) { if ((s[0]=='0') && (s!=(num+STBSP__NUMSZ))) ++s; break; }
|
||
while (s!=o) if ( ( fl&STBSP__TRIPLET_COMMA) && (l++==3) ) { l=0; *--s=stbsp__comma; --o; } else { *--s='0'; }
|
||
}
|
||
|
||
tail[0]=0;
|
||
stbsp__lead_sign(fl, lead);
|
||
|
||
// get the length that we copied
|
||
l = (stbsp__uint32) ( (num+STBSP__NUMSZ) - s ); if ( l == 0 ) { *--s='0'; l = 1; }
|
||
cs = l + (3<<24);
|
||
if (pr<0) pr = 0;
|
||
|
||
scopy:
|
||
// get fw=leading/trailing space, pr=leading zeros
|
||
if (pr<(stbsp__int32)l) pr = l;
|
||
n = pr + lead[0] + tail[0] + tz;
|
||
if (fw<(stbsp__int32)n) fw = n;
|
||
fw -= n;
|
||
pr -= l;
|
||
|
||
// handle right justify and leading zeros
|
||
if ( (fl&STBSP__LEFTJUST)==0 )
|
||
{
|
||
if (fl&STBSP__LEADINGZERO) // if leading zeros, everything is in pr
|
||
{
|
||
pr = (fw>pr)?fw:pr;
|
||
fw = 0;
|
||
}
|
||
else
|
||
{
|
||
fl &= ~STBSP__TRIPLET_COMMA; // if no leading zeros, then no commas
|
||
}
|
||
}
|
||
|
||
// copy the spaces and/or zeros
|
||
if (fw+pr)
|
||
{
|
||
stbsp__int32 i; stbsp__uint32 c;
|
||
|
||
// copy leading spaces (or when doing %8.4d stuff)
|
||
if ( (fl&STBSP__LEFTJUST)==0 ) while(fw>0) { stbsp__cb_buf_clamp(i,fw); fw -= i; while(i) { if ((((stbsp__uintptr)bf)&3)==0) break; *bf++=' '; --i; } while(i>=4) { *(stbsp__uint32*)bf=0x20202020; bf+=4; i-=4; } while (i) {*bf++=' '; --i;} stbsp__chk_cb_buf(1); }
|
||
|
||
// copy leader
|
||
sn=lead+1; while(lead[0]) { stbsp__cb_buf_clamp(i,lead[0]); lead[0] -= (char)i; while (i) {*bf++=*sn++; --i;} stbsp__chk_cb_buf(1); }
|
||
|
||
// copy leading zeros
|
||
c = cs >> 24; cs &= 0xffffff;
|
||
cs = (fl&STBSP__TRIPLET_COMMA)?((stbsp__uint32)(c-((pr+cs)%(c+1)))):0;
|
||
while(pr>0) { stbsp__cb_buf_clamp(i,pr); pr -= i; if((fl&STBSP__TRIPLET_COMMA)==0) { while(i) { if ((((stbsp__uintptr)bf)&3)==0) break; *bf++='0'; --i; } while(i>=4) { *(stbsp__uint32*)bf=0x30303030; bf+=4; i-=4; } } while (i) { if((fl&STBSP__TRIPLET_COMMA) && (cs++==c)) { cs = 0; *bf++=stbsp__comma; } else *bf++='0'; --i; } stbsp__chk_cb_buf(1); }
|
||
}
|
||
|
||
// copy leader if there is still one
|
||
sn=lead+1; while(lead[0]) { stbsp__int32 i; stbsp__cb_buf_clamp(i,lead[0]); lead[0] -= (char)i; while (i) {*bf++=*sn++; --i;} stbsp__chk_cb_buf(1); }
|
||
|
||
// copy the string
|
||
n = l; while (n) { stbsp__int32 i; stbsp__cb_buf_clamp(i,n); n-=i; STBSP__UNALIGNED( while(i>=4) { *(stbsp__uint32*)bf=*(stbsp__uint32*)s; bf+=4; s+=4; i-=4; } ) while (i) {*bf++=*s++; --i;} stbsp__chk_cb_buf(1); }
|
||
|
||
// copy trailing zeros
|
||
while(tz) { stbsp__int32 i; stbsp__cb_buf_clamp(i,tz); tz -= i; while(i) { if ((((stbsp__uintptr)bf)&3)==0) break; *bf++='0'; --i; } while(i>=4) { *(stbsp__uint32*)bf=0x30303030; bf+=4; i-=4; } while (i) {*bf++='0'; --i;} stbsp__chk_cb_buf(1); }
|
||
|
||
// copy tail if there is one
|
||
sn=tail+1; while(tail[0]) { stbsp__int32 i; stbsp__cb_buf_clamp(i,tail[0]); tail[0] -= (char)i; while (i) {*bf++=*sn++; --i;} stbsp__chk_cb_buf(1); }
|
||
|
||
// handle the left justify
|
||
if (fl&STBSP__LEFTJUST) if (fw>0) { while (fw) { stbsp__int32 i; stbsp__cb_buf_clamp(i,fw); fw-=i; while(i) { if ((((stbsp__uintptr)bf)&3)==0) break; *bf++=' '; --i; } while(i>=4) { *(stbsp__uint32*)bf=0x20202020; bf+=4; i-=4; } while (i--) *bf++=' '; stbsp__chk_cb_buf(1); } }
|
||
break;
|
||
|
||
default: // unknown, just copy code
|
||
s = num + STBSP__NUMSZ -1; *s = f[0];
|
||
l = 1;
|
||
fw=pr=fl=0;
|
||
lead[0]=0; tail[0]=0; pr = 0; dp = 0; cs = 0;
|
||
goto scopy;
|
||
}
|
||
++f;
|
||
}
|
||
endfmt:
|
||
|
||
if (!callback)
|
||
*bf = 0;
|
||
else
|
||
stbsp__flush_cb();
|
||
|
||
done:
|
||
return tlen + (int)(bf-buf);
|
||
}
|
||
|
||
// cleanup
|
||
#undef STBSP__LEFTJUST
|
||
#undef STBSP__LEADINGPLUS
|
||
#undef STBSP__LEADINGSPACE
|
||
#undef STBSP__LEADING_0X
|
||
#undef STBSP__LEADINGZERO
|
||
#undef STBSP__INTMAX
|
||
#undef STBSP__TRIPLET_COMMA
|
||
#undef STBSP__NEGATIVE
|
||
#undef STBSP__METRIC_SUFFIX
|
||
#undef STBSP__NUMSZ
|
||
#undef stbsp__chk_cb_bufL
|
||
#undef stbsp__chk_cb_buf
|
||
#undef stbsp__flush_cb
|
||
#undef stbsp__cb_buf_clamp
|
||
|
||
// ============================================================================
|
||
// wrapper functions
|
||
|
||
STBSP__PUBLICDEF int STB_SPRINTF_DECORATE( sprintf )( char * buf, char const * fmt, ... )
|
||
{
|
||
int result;
|
||
va_list va;
|
||
va_start( va, fmt );
|
||
result = STB_SPRINTF_DECORATE( vsprintfcb )( 0, 0, buf, fmt, va );
|
||
va_end(va);
|
||
return result;
|
||
}
|
||
|
||
typedef struct stbsp__context
|
||
{
|
||
char * buf;
|
||
int count;
|
||
char tmp[ STB_SPRINTF_MIN ];
|
||
} stbsp__context;
|
||
|
||
static char * stbsp__clamp_callback( char * buf, void * user, int len )
|
||
{
|
||
stbsp__context * c = (stbsp__context*)user;
|
||
|
||
if ( len > c->count ) len = c->count;
|
||
|
||
if (len)
|
||
{
|
||
if ( buf != c->buf )
|
||
{
|
||
char * s, * d, * se;
|
||
d = c->buf; s = buf; se = buf+len;
|
||
do{ *d++ = *s++; } while (s<se);
|
||
}
|
||
c->buf += len;
|
||
c->count -= len;
|
||
}
|
||
|
||
if ( c->count <= 0 ) return 0;
|
||
return ( c->count >= STB_SPRINTF_MIN ) ? c->buf : c->tmp; // go direct into buffer if you can
|
||
}
|
||
|
||
STBSP__PUBLICDEF int STB_SPRINTF_DECORATE( vsnprintf )( char * buf, int count, char const * fmt, va_list va )
|
||
{
|
||
stbsp__context c;
|
||
int l;
|
||
|
||
if ( count == 0 )
|
||
return 0;
|
||
|
||
c.buf = buf;
|
||
c.count = count;
|
||
|
||
STB_SPRINTF_DECORATE( vsprintfcb )( stbsp__clamp_callback, &c, stbsp__clamp_callback(0,&c,0), fmt, va );
|
||
|
||
// zero-terminate
|
||
l = (int)( c.buf - buf );
|
||
if ( l >= count ) // should never be greater, only equal (or less) than count
|
||
l = count - 1;
|
||
buf[l] = 0;
|
||
|
||
return l;
|
||
}
|
||
|
||
STBSP__PUBLICDEF int STB_SPRINTF_DECORATE( snprintf )( char * buf, int count, char const * fmt, ... )
|
||
{
|
||
int result;
|
||
va_list va;
|
||
va_start( va, fmt );
|
||
|
||
result = STB_SPRINTF_DECORATE( vsnprintf )( buf, count, fmt, va );
|
||
va_end(va);
|
||
|
||
return result;
|
||
}
|
||
|
||
STBSP__PUBLICDEF int STB_SPRINTF_DECORATE( vsprintf )( char * buf, char const * fmt, va_list va )
|
||
{
|
||
return STB_SPRINTF_DECORATE( vsprintfcb )( 0, 0, buf, fmt, va );
|
||
}
|
||
|
||
// =======================================================================
|
||
// low level float utility functions
|
||
|
||
#ifndef STB_SPRINTF_NOFLOAT
|
||
|
||
// copies d to bits w/ strict aliasing (this compiles to nothing on /Ox)
|
||
#define STBSP__COPYFP(dest,src) { int cn; for(cn=0;cn<8;cn++) ((char*)&dest)[cn]=((char*)&src)[cn]; }
|
||
|
||
// get float info
|
||
static stbsp__int32 stbsp__real_to_parts( stbsp__int64 * bits, stbsp__int32 * expo, double value )
|
||
{
|
||
double d;
|
||
stbsp__int64 b = 0;
|
||
|
||
// load value and round at the frac_digits
|
||
d = value;
|
||
|
||
STBSP__COPYFP( b, d );
|
||
|
||
*bits = b & ((((stbsp__uint64)1)<<52)-1);
|
||
*expo = (stbsp__int32) (((b >> 52) & 2047)-1023);
|
||
|
||
return (stbsp__int32)(b >> 63);
|
||
}
|
||
|
||
static double const stbsp__bot[23]={1e+000,1e+001,1e+002,1e+003,1e+004,1e+005,1e+006,1e+007,1e+008,1e+009,1e+010,1e+011,1e+012,1e+013,1e+014,1e+015,1e+016,1e+017,1e+018,1e+019,1e+020,1e+021,1e+022};
|
||
static double const stbsp__negbot[22]={1e-001,1e-002,1e-003,1e-004,1e-005,1e-006,1e-007,1e-008,1e-009,1e-010,1e-011,1e-012,1e-013,1e-014,1e-015,1e-016,1e-017,1e-018,1e-019,1e-020,1e-021,1e-022};
|
||
static double const stbsp__negboterr[22]={-5.551115123125783e-018,-2.0816681711721684e-019,-2.0816681711721686e-020,-4.7921736023859299e-021,-8.1803053914031305e-022,4.5251888174113741e-023,4.5251888174113739e-024,-2.0922560830128471e-025,-6.2281591457779853e-026,-3.6432197315497743e-027,6.0503030718060191e-028,2.0113352370744385e-029,-3.0373745563400371e-030,1.1806906454401013e-032,-7.7705399876661076e-032,2.0902213275965398e-033,-7.1542424054621921e-034,-7.1542424054621926e-035,2.4754073164739869e-036,5.4846728545790429e-037,9.2462547772103625e-038,-4.8596774326570872e-039};
|
||
static double const stbsp__top[13]={1e+023,1e+046,1e+069,1e+092,1e+115,1e+138,1e+161,1e+184,1e+207,1e+230,1e+253,1e+276,1e+299};
|
||
static double const stbsp__negtop[13]={1e-023,1e-046,1e-069,1e-092,1e-115,1e-138,1e-161,1e-184,1e-207,1e-230,1e-253,1e-276,1e-299};
|
||
static double const stbsp__toperr[13]={8388608,6.8601809640529717e+028,-7.253143638152921e+052,-4.3377296974619174e+075,-1.5559416129466825e+098,-3.2841562489204913e+121,-3.7745893248228135e+144,-1.7356668416969134e+167,-3.8893577551088374e+190,-9.9566444326005119e+213,6.3641293062232429e+236,-5.2069140800249813e+259,-5.2504760255204387e+282};
|
||
static double const stbsp__negtoperr[13]={3.9565301985100693e-040,-2.299904345391321e-063,3.6506201437945798e-086,1.1875228833981544e-109,-5.0644902316928607e-132,-6.7156837247865426e-155,-2.812077463003139e-178,-5.7778912386589953e-201,7.4997100559334532e-224,-4.6439668915134491e-247,-6.3691100762962136e-270,-9.436808465446358e-293,8.0970921678014997e-317};
|
||
|
||
#if defined(_MSC_VER) && (_MSC_VER<=1200)
|
||
static stbsp__uint64 const stbsp__powten[20]={1,10,100,1000, 10000,100000,1000000,10000000, 100000000,1000000000,10000000000,100000000000, 1000000000000,10000000000000,100000000000000,1000000000000000, 10000000000000000,100000000000000000,1000000000000000000,10000000000000000000U };
|
||
#define stbsp__tento19th ((stbsp__uint64)1000000000000000000)
|
||
#else
|
||
static stbsp__uint64 const stbsp__powten[20]={1,10,100,1000, 10000,100000,1000000,10000000, 100000000,1000000000,10000000000ULL,100000000000ULL, 1000000000000ULL,10000000000000ULL,100000000000000ULL,1000000000000000ULL, 10000000000000000ULL,100000000000000000ULL,1000000000000000000ULL,10000000000000000000ULL };
|
||
#define stbsp__tento19th (1000000000000000000ULL)
|
||
#endif
|
||
|
||
#define stbsp__ddmulthi(oh,ol,xh,yh) \
|
||
{ \
|
||
double ahi=0,alo,bhi=0,blo; \
|
||
stbsp__int64 bt; \
|
||
oh = xh * yh; \
|
||
STBSP__COPYFP(bt,xh); bt&=((~(stbsp__uint64)0)<<27); STBSP__COPYFP(ahi,bt); alo = xh-ahi; \
|
||
STBSP__COPYFP(bt,yh); bt&=((~(stbsp__uint64)0)<<27); STBSP__COPYFP(bhi,bt); blo = yh-bhi; \
|
||
ol = ((ahi*bhi-oh)+ahi*blo+alo*bhi)+alo*blo; \
|
||
}
|
||
|
||
#define stbsp__ddtoS64(ob,xh,xl) \
|
||
{ \
|
||
double ahi=0,alo,vh,t;\
|
||
ob = (stbsp__int64)ph;\
|
||
vh=(double)ob;\
|
||
ahi = ( xh - vh );\
|
||
t = ( ahi - xh );\
|
||
alo = (xh-(ahi-t))-(vh+t);\
|
||
ob += (stbsp__int64)(ahi+alo+xl);\
|
||
}
|
||
|
||
|
||
#define stbsp__ddrenorm(oh,ol) { double s; s=oh+ol; ol=ol-(s-oh); oh=s; }
|
||
|
||
#define stbsp__ddmultlo(oh,ol,xh,xl,yh,yl) \
|
||
ol = ol + ( xh*yl + xl*yh ); \
|
||
|
||
#define stbsp__ddmultlos(oh,ol,xh,yl) \
|
||
ol = ol + ( xh*yl ); \
|
||
|
||
static void stbsp__raise_to_power10( double *ohi, double *olo, double d, stbsp__int32 power ) // power can be -323 to +350
|
||
{
|
||
double ph, pl;
|
||
if ((power>=0) && (power<=22))
|
||
{
|
||
stbsp__ddmulthi(ph,pl,d,stbsp__bot[power]);
|
||
}
|
||
else
|
||
{
|
||
stbsp__int32 e,et,eb;
|
||
double p2h,p2l;
|
||
|
||
e=power; if (power<0) e=-e;
|
||
et = (e*0x2c9)>>14;/* %23 */ if (et>13) et=13; eb = e-(et*23);
|
||
|
||
ph = d; pl = 0.0;
|
||
if (power<0)
|
||
{
|
||
if (eb) { --eb; stbsp__ddmulthi(ph,pl,d,stbsp__negbot[eb]); stbsp__ddmultlos(ph,pl,d,stbsp__negboterr[eb]); }
|
||
if (et)
|
||
{
|
||
stbsp__ddrenorm(ph,pl);
|
||
--et; stbsp__ddmulthi(p2h,p2l,ph,stbsp__negtop[et]); stbsp__ddmultlo(p2h,p2l,ph,pl,stbsp__negtop[et],stbsp__negtoperr[et]); ph=p2h;pl=p2l;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
if (eb)
|
||
{
|
||
e = eb; if (eb>22) eb=22; e -= eb;
|
||
stbsp__ddmulthi(ph,pl,d,stbsp__bot[eb]);
|
||
if ( e ) { stbsp__ddrenorm(ph,pl); stbsp__ddmulthi(p2h,p2l,ph,stbsp__bot[e]); stbsp__ddmultlos(p2h,p2l,stbsp__bot[e],pl); ph=p2h;pl=p2l; }
|
||
}
|
||
if (et)
|
||
{
|
||
stbsp__ddrenorm(ph,pl);
|
||
--et; stbsp__ddmulthi(p2h,p2l,ph,stbsp__top[et]); stbsp__ddmultlo(p2h,p2l,ph,pl,stbsp__top[et],stbsp__toperr[et]); ph=p2h;pl=p2l;
|
||
}
|
||
}
|
||
}
|
||
stbsp__ddrenorm(ph,pl);
|
||
*ohi = ph; *olo = pl;
|
||
}
|
||
|
||
// given a float value, returns the significant bits in bits, and the position of the
|
||
// decimal point in decimal_pos. +/-INF and NAN are specified by special values
|
||
// returned in the decimal_pos parameter.
|
||
// frac_digits is absolute normally, but if you want from first significant digits (got %g and %e), or in 0x80000000
|
||
static stbsp__int32 stbsp__real_to_str( char const * * start, stbsp__uint32 * len, char *out, stbsp__int32 * decimal_pos, double value, stbsp__uint32 frac_digits )
|
||
{
|
||
double d;
|
||
stbsp__int64 bits = 0;
|
||
stbsp__int32 expo, e, ng, tens;
|
||
|
||
d = value;
|
||
STBSP__COPYFP(bits,d);
|
||
expo = (stbsp__int32) ((bits >> 52) & 2047);
|
||
ng = (stbsp__int32)(bits >> 63);
|
||
if (ng) d=-d;
|
||
|
||
if ( expo == 2047 ) // is nan or inf?
|
||
{
|
||
*start = (bits&((((stbsp__uint64)1)<<52)-1)) ? "NaN" : "Inf";
|
||
*decimal_pos = STBSP__SPECIAL;
|
||
*len = 3;
|
||
return ng;
|
||
}
|
||
|
||
if ( expo == 0 ) // is zero or denormal
|
||
{
|
||
if ((bits<<1)==0) // do zero
|
||
{
|
||
*decimal_pos = 1;
|
||
*start = out;
|
||
out[0] = '0'; *len = 1;
|
||
return ng;
|
||
}
|
||
// find the right expo for denormals
|
||
{
|
||
stbsp__int64 v = ((stbsp__uint64)1)<<51;
|
||
while ((bits&v)==0) { --expo; v >>= 1; }
|
||
}
|
||
}
|
||
|
||
// find the decimal exponent as well as the decimal bits of the value
|
||
{
|
||
double ph,pl;
|
||
|
||
// log10 estimate - very specifically tweaked to hit or undershoot by no more than 1 of log10 of all expos 1..2046
|
||
tens=expo-1023; tens = (tens<0)?((tens*617)/2048):(((tens*1233)/4096)+1);
|
||
|
||
// move the significant bits into position and stick them into an int
|
||
stbsp__raise_to_power10( &ph, &pl, d, 18-tens );
|
||
|
||
// get full as much precision from double-double as possible
|
||
stbsp__ddtoS64( bits, ph,pl );
|
||
|
||
// check if we undershot
|
||
if ( ((stbsp__uint64)bits) >= stbsp__tento19th ) ++tens;
|
||
}
|
||
|
||
// now do the rounding in integer land
|
||
frac_digits = ( frac_digits & 0x80000000 ) ? ( (frac_digits&0x7ffffff) + 1 ) : ( tens + frac_digits );
|
||
if ( ( frac_digits < 24 ) )
|
||
{
|
||
stbsp__uint32 dg = 1; if ((stbsp__uint64)bits >= stbsp__powten[9] ) dg=10; while( (stbsp__uint64)bits >= stbsp__powten[dg] ) { ++dg; if (dg==20) goto noround; }
|
||
if ( frac_digits < dg )
|
||
{
|
||
stbsp__uint64 r;
|
||
// add 0.5 at the right position and round
|
||
e = dg - frac_digits;
|
||
if ( (stbsp__uint32)e >= 24 ) goto noround;
|
||
r = stbsp__powten[e];
|
||
bits = bits + (r/2);
|
||
if ( (stbsp__uint64)bits >= stbsp__powten[dg] ) ++tens;
|
||
bits /= r;
|
||
}
|
||
noround:;
|
||
}
|
||
|
||
// kill long trailing runs of zeros
|
||
if ( bits )
|
||
{
|
||
stbsp__uint32 n;
|
||
for(;;) { if ( bits<=0xffffffff ) break; if (bits%1000) goto donez; bits/=1000; }
|
||
n = (stbsp__uint32)bits;
|
||
while ((n%1000)==0) n/=1000;
|
||
bits=n;
|
||
donez:;
|
||
}
|
||
|
||
// convert to string
|
||
out += 64;
|
||
e = 0;
|
||
for(;;)
|
||
{
|
||
stbsp__uint32 n;
|
||
char * o = out-8;
|
||
// do the conversion in chunks of U32s (avoid most 64-bit divides, worth it, constant denomiators be damned)
|
||
if (bits>=100000000) { n = (stbsp__uint32)( bits % 100000000); bits /= 100000000; } else {n = (stbsp__uint32)bits; bits = 0; }
|
||
while(n) { out-=2; *(stbsp__uint16*)out=*(stbsp__uint16*)&stbsp__digitpair[(n%100)*2]; n/=100; e+=2; }
|
||
if (bits==0) { if ((e) && (out[0]=='0')) { ++out; --e; } break; }
|
||
while( out!=o ) { *--out ='0'; ++e; }
|
||
}
|
||
|
||
*decimal_pos = tens;
|
||
*start = out;
|
||
*len = e;
|
||
return ng;
|
||
}
|
||
|
||
#undef stbsp__ddmulthi
|
||
#undef stbsp__ddrenorm
|
||
#undef stbsp__ddmultlo
|
||
#undef stbsp__ddmultlos
|
||
#undef STBSP__SPECIAL
|
||
#undef STBSP__COPYFP
|
||
|
||
#endif // STB_SPRINTF_NOFLOAT
|
||
|
||
// clean up
|
||
#undef stbsp__uint16
|
||
#undef stbsp__uint32
|
||
#undef stbsp__int32
|
||
#undef stbsp__uint64
|
||
#undef stbsp__int64
|
||
#undef STBSP__UNALIGNED
|
||
|
||
#ifdef __GNUC__
|
||
#pragma GCC diagnostic pop
|
||
#endif
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// #DqnIni Implementation - Simple ini-file reader for C/C++.
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
#ifdef __GNUC__
|
||
#pragma GCC diagnostic push
|
||
#pragma GCC diagnostic ignored "-Wsign-compare"
|
||
#endif
|
||
|
||
#define INITIAL_CAPACITY (256)
|
||
|
||
#define _CRT_NONSTDC_NO_DEPRECATE
|
||
#define _CRT_SECURE_NO_WARNINGS
|
||
#include <stddef.h>
|
||
|
||
#ifndef DQN_INI_MALLOC
|
||
#define _CRT_NONSTDC_NO_DEPRECATE
|
||
#define _CRT_SECURE_NO_WARNINGS
|
||
#include <stdlib.h>
|
||
#define DQN_INI_MALLOC(ctx, size) (malloc(size))
|
||
#define DQN_INI_FREE(ctx, ptr) (free(ptr))
|
||
#endif
|
||
|
||
#ifndef DQN_INI_MEMCPY
|
||
#define _CRT_NONSTDC_NO_DEPRECATE
|
||
#define _CRT_SECURE_NO_WARNINGS
|
||
#include <string.h>
|
||
#define DQN_INI_MEMCPY(dst, src, cnt) (memcpy(dst, src, cnt))
|
||
#endif
|
||
|
||
#ifndef DQN_INI_STRLEN
|
||
#define _CRT_NONSTDC_NO_DEPRECATE
|
||
#define _CRT_SECURE_NO_WARNINGS
|
||
#include <string.h>
|
||
#define DQN_INI_STRLEN(s) (strlen(s))
|
||
#endif
|
||
|
||
#ifndef DQN_INI_STRICMP
|
||
#ifdef _WIN32
|
||
#define _CRT_NONSTDC_NO_DEPRECATE
|
||
#define _CRT_SECURE_NO_WARNINGS
|
||
#include <string.h>
|
||
#define DQN_INI_STRICMP(s1, s2) ( _stricmp(s1, s2))
|
||
#else
|
||
#include <string.h>
|
||
#define DQN_INI_STRICMP(s1, s2) (strcasecmp(s1, s2))
|
||
#endif
|
||
#endif
|
||
|
||
struct dqn_ini_internal_section_t
|
||
{
|
||
char name[32];
|
||
char *name_large;
|
||
};
|
||
|
||
struct dqn_ini_internal_property_t
|
||
{
|
||
int section;
|
||
char name[32];
|
||
char *name_large;
|
||
char value[64];
|
||
char *value_large;
|
||
};
|
||
|
||
struct DqnIni
|
||
{
|
||
struct dqn_ini_internal_section_t *sections;
|
||
int section_capacity;
|
||
int section_count;
|
||
|
||
struct dqn_ini_internal_property_t *properties;
|
||
int property_capacity;
|
||
int property_count;
|
||
|
||
void *memctx;
|
||
};
|
||
|
||
static int DqnIni_InternalPropertyIndex(DqnIni const *ini, int section,
|
||
int property)
|
||
{
|
||
int i;
|
||
int p;
|
||
|
||
if (ini && section >= 0 && section < ini->section_count)
|
||
{
|
||
p = 0;
|
||
for (i = 0; i < ini->property_count; ++i)
|
||
{
|
||
if (ini->properties[i].section == section)
|
||
{
|
||
if (p == property) return i;
|
||
++p;
|
||
}
|
||
}
|
||
}
|
||
|
||
return DQN_INI_NOT_FOUND;
|
||
}
|
||
|
||
DqnIni *DqnIni_Create(void *memctx)
|
||
{
|
||
DqnIni *ini;
|
||
|
||
ini = (DqnIni *)DQN_INI_MALLOC(memctx, sizeof(DqnIni));
|
||
ini->memctx = memctx;
|
||
ini->sections = (struct dqn_ini_internal_section_t *)DQN_INI_MALLOC(
|
||
ini->memctx, INITIAL_CAPACITY * sizeof(ini->sections[0]));
|
||
ini->section_capacity = INITIAL_CAPACITY;
|
||
ini->section_count = 1; /* global section */
|
||
ini->sections[0].name[0] = '\0';
|
||
ini->sections[0].name_large = 0;
|
||
ini->properties = (struct dqn_ini_internal_property_t *)DQN_INI_MALLOC(
|
||
ini->memctx, INITIAL_CAPACITY * sizeof(ini->properties[0]));
|
||
ini->property_capacity = INITIAL_CAPACITY;
|
||
ini->property_count = 0;
|
||
return ini;
|
||
}
|
||
|
||
DqnIni *DqnIni_Load(char const *data, void *memctx)
|
||
{
|
||
DqnIni *ini;
|
||
char const *ptr;
|
||
int s;
|
||
char const *start;
|
||
char const *start2;
|
||
int l;
|
||
|
||
ini = DqnIni_Create(memctx);
|
||
|
||
ptr = data;
|
||
if (ptr)
|
||
{
|
||
s = 0;
|
||
while (*ptr)
|
||
{
|
||
/* trim leading whitespace */
|
||
while (*ptr && *ptr <= ' ')
|
||
++ptr;
|
||
|
||
/* done? */
|
||
if (!*ptr) break;
|
||
|
||
/* comment */
|
||
else if (*ptr == ';')
|
||
{
|
||
while (*ptr && *ptr != '\n')
|
||
++ptr;
|
||
}
|
||
/* section */
|
||
else if (*ptr == '[')
|
||
{
|
||
++ptr;
|
||
start = ptr;
|
||
while (*ptr && *ptr != ']' && *ptr != '\n')
|
||
++ptr;
|
||
|
||
if (*ptr == ']')
|
||
{
|
||
s = DqnIni_SectionAdd(ini, start, (int)(ptr - start));
|
||
++ptr;
|
||
}
|
||
}
|
||
/* property */
|
||
else
|
||
{
|
||
start = ptr;
|
||
while (*ptr && *ptr != '=' && *ptr != '\n')
|
||
++ptr;
|
||
|
||
if (*ptr == '=')
|
||
{
|
||
l = (int)(ptr - start);
|
||
++ptr;
|
||
while (*ptr && *ptr <= ' ' && *ptr != '\n')
|
||
ptr++;
|
||
start2 = ptr;
|
||
while (*ptr && *ptr != '\n')
|
||
++ptr;
|
||
while (*(--ptr) <= ' ')
|
||
(void)ptr;
|
||
ptr++;
|
||
DqnIni_PropertyAdd(ini, s, start, l, start2,
|
||
(int)(ptr - start2));
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
return ini;
|
||
}
|
||
|
||
int DqnIni_Save(DqnIni const *ini, char *data, int size)
|
||
{
|
||
int s;
|
||
int p;
|
||
int i;
|
||
int l;
|
||
char *n;
|
||
int pos;
|
||
|
||
if (ini)
|
||
{
|
||
pos = 0;
|
||
for (s = 0; s < ini->section_count; ++s)
|
||
{
|
||
n = ini->sections[s].name_large ? ini->sections[s].name_large
|
||
: ini->sections[s].name;
|
||
l = (int)DQN_INI_STRLEN(n);
|
||
if (l > 0)
|
||
{
|
||
if (data && pos < size) data[pos] = '[';
|
||
++pos;
|
||
for (i = 0; i < l; ++i)
|
||
{
|
||
if (data && pos < size) data[pos] = n[i];
|
||
++pos;
|
||
}
|
||
if (data && pos < size) data[pos] = ']';
|
||
++pos;
|
||
if (data && pos < size) data[pos] = '\n';
|
||
++pos;
|
||
}
|
||
|
||
for (p = 0; p < ini->property_count; ++p)
|
||
{
|
||
if (ini->properties[p].section == s)
|
||
{
|
||
n = ini->properties[p].name_large
|
||
? ini->properties[p].name_large
|
||
: ini->properties[p].name;
|
||
l = (int)DQN_INI_STRLEN(n);
|
||
for (i = 0; i < l; ++i)
|
||
{
|
||
if (data && pos < size) data[pos] = n[i];
|
||
++pos;
|
||
}
|
||
if (data && pos < size) data[pos] = '=';
|
||
++pos;
|
||
n = ini->properties[p].value_large
|
||
? ini->properties[p].value_large
|
||
: ini->properties[p].value;
|
||
l = (int)DQN_INI_STRLEN(n);
|
||
for (i = 0; i < l; ++i)
|
||
{
|
||
if (data && pos < size) data[pos] = n[i];
|
||
++pos;
|
||
}
|
||
if (data && pos < size) data[pos] = '\n';
|
||
++pos;
|
||
}
|
||
}
|
||
|
||
if (pos > 0)
|
||
{
|
||
if (data && pos < size) data[pos] = '\n';
|
||
++pos;
|
||
}
|
||
}
|
||
|
||
if (data && pos < size) data[pos] = '\0';
|
||
++pos;
|
||
|
||
return pos;
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
void DqnIni_Destroy(DqnIni *ini)
|
||
{
|
||
int i;
|
||
|
||
if (ini)
|
||
{
|
||
for (i = 0; i < ini->property_count; ++i)
|
||
{
|
||
if (ini->properties[i].value_large)
|
||
DQN_INI_FREE(ini->memctx, ini->properties[i].value_large);
|
||
if (ini->properties[i].name_large)
|
||
DQN_INI_FREE(ini->memctx, ini->properties[i].name_large);
|
||
}
|
||
for (i = 0; i < ini->section_count; ++i)
|
||
if (ini->sections[i].name_large)
|
||
DQN_INI_FREE(ini->memctx, ini->sections[i].name_large);
|
||
DQN_INI_FREE(ini->memctx, ini->properties);
|
||
DQN_INI_FREE(ini->memctx, ini->sections);
|
||
DQN_INI_FREE(ini->memctx, ini);
|
||
}
|
||
}
|
||
|
||
int DqnIni_SectionCount(DqnIni const *ini)
|
||
{
|
||
if (ini) return ini->section_count;
|
||
return 0;
|
||
}
|
||
|
||
char const *DqnIni_SectionName(DqnIni const *ini, int section)
|
||
{
|
||
if (ini && section >= 0 && section < ini->section_count)
|
||
return ini->sections[section].name_large
|
||
? ini->sections[section].name_large
|
||
: ini->sections[section].name;
|
||
|
||
return nullptr;
|
||
}
|
||
|
||
int DqnIni_PropertyCount(DqnIni const *ini, int section)
|
||
{
|
||
int i;
|
||
int count;
|
||
|
||
if (ini)
|
||
{
|
||
count = 0;
|
||
for (i = 0; i < ini->property_count; ++i)
|
||
{
|
||
if (ini->properties[i].section == section) ++count;
|
||
}
|
||
return count;
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
char const *DqnIni_PropertyName(DqnIni const *ini, int section, int property)
|
||
{
|
||
int p;
|
||
|
||
if (ini && section >= 0 && section < ini->section_count)
|
||
{
|
||
p = DqnIni_InternalPropertyIndex(ini, section, property);
|
||
if (p != DQN_INI_NOT_FOUND)
|
||
return ini->properties[p].name_large ? ini->properties[p].name_large
|
||
: ini->properties[p].name;
|
||
}
|
||
|
||
return nullptr;
|
||
}
|
||
|
||
char const *DqnIni_PropertyValue(DqnIni const *ini, int section, int property)
|
||
{
|
||
int p;
|
||
|
||
if (ini && section >= 0 && section < ini->section_count)
|
||
{
|
||
p = DqnIni_InternalPropertyIndex(ini, section, property);
|
||
if (p != DQN_INI_NOT_FOUND)
|
||
return ini->properties[p].value_large
|
||
? ini->properties[p].value_large
|
||
: ini->properties[p].value;
|
||
}
|
||
|
||
return nullptr;
|
||
}
|
||
|
||
int DqnIni_FindSection(DqnIni const *ini, char const *name, int name_length)
|
||
{
|
||
int i;
|
||
|
||
if (ini && name)
|
||
{
|
||
if (name_length <= 0) name_length = (int)DQN_INI_STRLEN(name);
|
||
for (i = 0; i < ini->section_count; ++i)
|
||
{
|
||
char const *const other = ini->sections[i].name_large
|
||
? ini->sections[i].name_large
|
||
: ini->sections[i].name;
|
||
if ((int)DQN_INI_STRLEN(other) == name_length &&
|
||
DQN_INI_STRICMP(name, other) == 0)
|
||
return i;
|
||
}
|
||
}
|
||
|
||
return DQN_INI_NOT_FOUND;
|
||
}
|
||
|
||
int DqnIni_FindProperty(DqnIni const *ini, int section, char const *name,
|
||
int name_length)
|
||
{
|
||
int i;
|
||
int c;
|
||
|
||
if (ini && name && section >= 0 && section < ini->section_count)
|
||
{
|
||
if (name_length <= 0) name_length = (int)DQN_INI_STRLEN(name);
|
||
c = 0;
|
||
for (i = 0; i < ini->property_capacity; ++i)
|
||
{
|
||
if (ini->properties[i].section == section)
|
||
{
|
||
char const *const other = ini->properties[i].name_large
|
||
? ini->properties[i].name_large
|
||
: ini->properties[i].name;
|
||
if ((int)DQN_INI_STRLEN(other) == name_length &&
|
||
DQN_INI_STRICMP(name, other) == 0)
|
||
return c;
|
||
++c;
|
||
}
|
||
}
|
||
}
|
||
|
||
return DQN_INI_NOT_FOUND;
|
||
}
|
||
|
||
int DqnIni_SectionAdd(DqnIni *ini, char const *name, int length)
|
||
{
|
||
struct dqn_ini_internal_section_t *new_sections;
|
||
|
||
if (ini && name)
|
||
{
|
||
if (length <= 0) length = (int)DQN_INI_STRLEN(name);
|
||
if (ini->section_count >= ini->section_capacity)
|
||
{
|
||
ini->section_capacity *= 2;
|
||
new_sections = (struct dqn_ini_internal_section_t *)DQN_INI_MALLOC(
|
||
ini->memctx, ini->section_capacity * sizeof(ini->sections[0]));
|
||
DQN_INI_MEMCPY(new_sections, ini->sections,
|
||
ini->section_count * sizeof(ini->sections[0]));
|
||
DQN_INI_FREE(ini->memctx, ini->sections);
|
||
ini->sections = new_sections;
|
||
}
|
||
|
||
ini->sections[ini->section_count].name_large = 0;
|
||
if (length + 1 >= sizeof(ini->sections[0].name))
|
||
{
|
||
ini->sections[ini->section_count].name_large =
|
||
(char *)DQN_INI_MALLOC(ini->memctx, (size_t)length + 1);
|
||
DQN_INI_MEMCPY(ini->sections[ini->section_count].name_large, name,
|
||
(size_t)length);
|
||
ini->sections[ini->section_count].name_large[length] = '\0';
|
||
}
|
||
else
|
||
{
|
||
DQN_INI_MEMCPY(ini->sections[ini->section_count].name, name,
|
||
(size_t)length);
|
||
ini->sections[ini->section_count].name[length] = '\0';
|
||
}
|
||
|
||
return ini->section_count++;
|
||
}
|
||
return DQN_INI_NOT_FOUND;
|
||
}
|
||
|
||
void DqnIni_PropertyAdd(DqnIni *ini, int section, char const *name,
|
||
int name_length, char const *value, int value_length)
|
||
{
|
||
struct dqn_ini_internal_property_t *new_properties;
|
||
|
||
if (ini && name && section >= 0 && section < ini->section_count)
|
||
{
|
||
if (name_length <= 0) name_length = (int)DQN_INI_STRLEN(name);
|
||
if (value_length <= 0) value_length = (int)DQN_INI_STRLEN(value);
|
||
|
||
if (ini->property_count >= ini->property_capacity)
|
||
{
|
||
|
||
ini->property_capacity *= 2;
|
||
new_properties =
|
||
(struct dqn_ini_internal_property_t *)DQN_INI_MALLOC(
|
||
ini->memctx,
|
||
ini->property_capacity * sizeof(ini->properties[0]));
|
||
DQN_INI_MEMCPY(new_properties, ini->properties,
|
||
ini->property_count * sizeof(ini->properties[0]));
|
||
DQN_INI_FREE(ini->memctx, ini->properties);
|
||
ini->properties = new_properties;
|
||
}
|
||
|
||
ini->properties[ini->property_count].section = section;
|
||
ini->properties[ini->property_count].name_large = 0;
|
||
ini->properties[ini->property_count].value_large = 0;
|
||
|
||
if (name_length + 1 >= sizeof(ini->properties[0].name))
|
||
{
|
||
ini->properties[ini->property_count].name_large =
|
||
(char *)DQN_INI_MALLOC(ini->memctx, (size_t)name_length + 1);
|
||
DQN_INI_MEMCPY(ini->properties[ini->property_count].name_large,
|
||
name, (size_t)name_length);
|
||
ini->properties[ini->property_count].name_large[name_length] = '\0';
|
||
}
|
||
else
|
||
{
|
||
DQN_INI_MEMCPY(ini->properties[ini->property_count].name, name,
|
||
(size_t)name_length);
|
||
ini->properties[ini->property_count].name[name_length] = '\0';
|
||
}
|
||
|
||
if (value_length + 1 >= sizeof(ini->properties[0].value))
|
||
{
|
||
ini->properties[ini->property_count].value_large =
|
||
(char *)DQN_INI_MALLOC(ini->memctx, (size_t)value_length + 1);
|
||
DQN_INI_MEMCPY(ini->properties[ini->property_count].value_large,
|
||
value, (size_t)value_length);
|
||
ini->properties[ini->property_count].value_large[value_length] =
|
||
'\0';
|
||
}
|
||
else
|
||
{
|
||
DQN_INI_MEMCPY(ini->properties[ini->property_count].value, value,
|
||
(size_t)value_length);
|
||
ini->properties[ini->property_count].value[value_length] = '\0';
|
||
}
|
||
|
||
++ini->property_count;
|
||
}
|
||
}
|
||
|
||
void DqnIni_SectionRemove(DqnIni *ini, int section)
|
||
{
|
||
int p;
|
||
|
||
if (ini && section >= 0 && section < ini->section_count)
|
||
{
|
||
if (ini->sections[section].name_large)
|
||
DQN_INI_FREE(ini->memctx, ini->sections[section].name_large);
|
||
for (p = ini->property_count - 1; p >= 0; --p)
|
||
{
|
||
if (ini->properties[p].section == section)
|
||
{
|
||
if (ini->properties[p].value_large)
|
||
DQN_INI_FREE(ini->memctx, ini->properties[p].value_large);
|
||
if (ini->properties[p].name_large)
|
||
DQN_INI_FREE(ini->memctx, ini->properties[p].name_large);
|
||
ini->properties[p] = ini->properties[--ini->property_count];
|
||
}
|
||
}
|
||
|
||
ini->sections[section] = ini->sections[--ini->section_count];
|
||
|
||
for (p = 0; p < ini->property_count; ++p)
|
||
{
|
||
if (ini->properties[p].section == ini->section_count)
|
||
ini->properties[p].section = section;
|
||
}
|
||
}
|
||
}
|
||
|
||
void DqnIni_PropertyRemove(DqnIni *ini, int section, int property)
|
||
{
|
||
int p;
|
||
|
||
if (ini && section >= 0 && section < ini->section_count)
|
||
{
|
||
p = DqnIni_InternalPropertyIndex(ini, section, property);
|
||
if (p != DQN_INI_NOT_FOUND)
|
||
{
|
||
if (ini->properties[p].value_large)
|
||
DQN_INI_FREE(ini->memctx, ini->properties[p].value_large);
|
||
if (ini->properties[p].name_large)
|
||
DQN_INI_FREE(ini->memctx, ini->properties[p].name_large);
|
||
ini->properties[p] = ini->properties[--ini->property_count];
|
||
return;
|
||
}
|
||
}
|
||
}
|
||
|
||
void DqnIni_SectionNameSet(DqnIni *ini, int section, char const *name,
|
||
int length)
|
||
{
|
||
if (ini && name && section >= 0 && section < ini->section_count)
|
||
{
|
||
if (length <= 0) length = (int)DQN_INI_STRLEN(name);
|
||
if (ini->sections[section].name_large)
|
||
DQN_INI_FREE(ini->memctx, ini->sections[section].name_large);
|
||
ini->sections[section].name_large = 0;
|
||
|
||
if (length + 1 >= sizeof(ini->sections[0].name))
|
||
{
|
||
ini->sections[section].name_large =
|
||
(char *)DQN_INI_MALLOC(ini->memctx, (size_t)length + 1);
|
||
DQN_INI_MEMCPY(ini->sections[section].name_large, name,
|
||
(size_t)length);
|
||
ini->sections[section].name_large[length] = '\0';
|
||
}
|
||
else
|
||
{
|
||
DQN_INI_MEMCPY(ini->sections[section].name, name, (size_t)length);
|
||
ini->sections[section].name[length] = '\0';
|
||
}
|
||
}
|
||
}
|
||
|
||
void DqnIni_PropertyNameSet(DqnIni *ini, int section, int property,
|
||
char const *name, int length)
|
||
{
|
||
int p;
|
||
|
||
if (ini && name && section >= 0 && section < ini->section_count)
|
||
{
|
||
if (length <= 0) length = (int)DQN_INI_STRLEN(name);
|
||
p = DqnIni_InternalPropertyIndex(ini, section, property);
|
||
if (p != DQN_INI_NOT_FOUND)
|
||
{
|
||
if (ini->properties[p].name_large)
|
||
DQN_INI_FREE(ini->memctx, ini->properties[p].name_large);
|
||
ini->properties[ini->property_count].name_large = 0;
|
||
|
||
if (length + 1 >= sizeof(ini->properties[0].name))
|
||
{
|
||
ini->properties[p].name_large =
|
||
(char *)DQN_INI_MALLOC(ini->memctx, (size_t)length + 1);
|
||
DQN_INI_MEMCPY(ini->properties[p].name_large, name,
|
||
(size_t)length);
|
||
ini->properties[p].name_large[length] = '\0';
|
||
}
|
||
else
|
||
{
|
||
DQN_INI_MEMCPY(ini->properties[p].name, name, (size_t)length);
|
||
ini->properties[p].name[length] = '\0';
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
void DqnIni_PropertyValueSet(DqnIni *ini, int section, int property,
|
||
char const *value, int length)
|
||
{
|
||
int p;
|
||
|
||
if (ini && value && section >= 0 && section < ini->section_count)
|
||
{
|
||
if (length <= 0) length = (int)DQN_INI_STRLEN(value);
|
||
p = DqnIni_InternalPropertyIndex(ini, section, property);
|
||
if (p != DQN_INI_NOT_FOUND)
|
||
{
|
||
if (ini->properties[p].value_large)
|
||
DQN_INI_FREE(ini->memctx, ini->properties[p].value_large);
|
||
ini->properties[ini->property_count].value_large = 0;
|
||
|
||
if (length + 1 >= sizeof(ini->properties[0].value))
|
||
{
|
||
ini->properties[p].value_large =
|
||
(char *)DQN_INI_MALLOC(ini->memctx, (size_t)length + 1);
|
||
DQN_INI_MEMCPY(ini->properties[p].name_large, value,
|
||
(size_t)length);
|
||
ini->properties[p].value_large[length] = '\0';
|
||
}
|
||
else
|
||
{
|
||
DQN_INI_MEMCPY(ini->properties[p].value, value, (size_t)length);
|
||
ini->properties[p].name[length] = '\0';
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
#ifdef __GNUC__
|
||
#pragma GCC diagnostic pop // -Wsign-compare for DQN_INI
|
||
#endif
|
||
#endif // DQN_IMPLEMENTATION
|
||
|
||
#if defined(DQN_XPLATFORM_LAYER)
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// #XPlatform (Win32 & Unix) Implementation
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// Functions in the Cross Platform are guaranteed to be supported in both Unix
|
||
// and Win32
|
||
|
||
#ifdef DQN_UNIX_PLATFORM
|
||
#include <stdio.h> // Basic File I/O // TODO(doyle): Syscall versions
|
||
|
||
#include <dirent.h> // readdir()/opendir()/closedir()
|
||
#include <sys/stat.h> // file size query
|
||
#include <sys/time.h> // high resolution timer
|
||
#include <time.h> // timespec
|
||
#include <unistd.h> // unlink()
|
||
#endif
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// XPlatform > #DqnFile CPP Implementation
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// NOTE(doyle): This is necessary since we supply a default constructor, some uninitialised values
|
||
// were put in when using DqnFile file = {};
|
||
DqnFile::DqnFile(const bool raiiCleanup)
|
||
: permissionFlags(0)
|
||
, handle(0)
|
||
, size(0)
|
||
, raiiCleanup(raiiCleanup)
|
||
{
|
||
}
|
||
|
||
DqnFile::~DqnFile()
|
||
{
|
||
if (this->raiiCleanup) this->Close();
|
||
}
|
||
|
||
bool DqnFile::Open(const char *const path, const u32 permissionFlags_,
|
||
const enum DqnFileAction action)
|
||
{
|
||
return DqnFile_Open(path, this, permissionFlags_, action);
|
||
}
|
||
|
||
bool DqnFile::OpenW(const wchar_t *const path, const u32 permissionFlags_,
|
||
const enum DqnFileAction action)
|
||
{
|
||
return DqnFile_OpenW(path, this, permissionFlags_, action);
|
||
}
|
||
|
||
size_t DqnFile::Write(u8 *const buffer, const size_t numBytesToWrite, const size_t fileOffset)
|
||
{
|
||
return DqnFile_Write(this, buffer, numBytesToWrite, fileOffset);
|
||
}
|
||
|
||
size_t DqnFile::Read(u8 *const buffer, const size_t numBytesToRead)
|
||
{
|
||
return DqnFile_Read(this, buffer, numBytesToRead);
|
||
}
|
||
void DqnFile::Close() { DqnFile_Close(this); }
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// XPlatform > #DqnFileInternal Implementation
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
#ifdef DQN_WIN32_PLATFORM
|
||
FILE_SCOPE bool DqnFileInternal_Win32OpenW(const wchar_t *const path,
|
||
DqnFile *const file,
|
||
const u32 permissionFlags,
|
||
const enum DqnFileAction action)
|
||
{
|
||
if (!file || !path) return false;
|
||
|
||
DWORD win32Permission = 0;
|
||
if (permissionFlags & DqnFilePermissionFlag_All)
|
||
{
|
||
win32Permission = GENERIC_ALL;
|
||
}
|
||
else
|
||
{
|
||
if (permissionFlags & DqnFilePermissionFlag_Read) win32Permission |= GENERIC_READ;
|
||
if (permissionFlags & DqnFilePermissionFlag_Write) win32Permission |= GENERIC_WRITE;
|
||
if (permissionFlags & DqnFilePermissionFlag_Execute) win32Permission |= GENERIC_EXECUTE;
|
||
}
|
||
|
||
DWORD win32Action = 0;
|
||
switch (action)
|
||
{
|
||
// Allow fall through
|
||
default: DQN_ASSERT(DQN_INVALID_CODE_PATH);
|
||
case DqnFileAction_OpenOnly: win32Action = OPEN_EXISTING; break;
|
||
case DqnFileAction_ClearIfExist: win32Action = TRUNCATE_EXISTING; break;
|
||
case DqnFileAction_CreateIfNotExist: win32Action = CREATE_NEW; break;
|
||
case DqnFileAction_ForceCreate: win32Action = CREATE_ALWAYS; break;
|
||
}
|
||
|
||
HANDLE handle = CreateFileW(path, win32Permission, 0, nullptr, win32Action,
|
||
FILE_ATTRIBUTE_NORMAL, nullptr);
|
||
|
||
if (handle == INVALID_HANDLE_VALUE)
|
||
{
|
||
return false;
|
||
}
|
||
|
||
LARGE_INTEGER size;
|
||
if (GetFileSizeEx(handle, &size) == 0)
|
||
{
|
||
DqnFile_Close(file);
|
||
DqnWin32_DisplayLastError("GetFileSizeEx() failed");
|
||
return false;
|
||
}
|
||
|
||
file->handle = handle;
|
||
file->size = (size_t)size.QuadPart;
|
||
file->permissionFlags = permissionFlags;
|
||
return true;
|
||
}
|
||
|
||
DQN_FILE_SCOPE char **DqnFileInternal_PlatformListDir(const char *const dir, u32 *const numFiles)
|
||
{
|
||
if (!dir || !numFiles) return nullptr;
|
||
|
||
u32 currNumFiles = 0;
|
||
wchar_t wideDir[MAX_PATH] = {0};
|
||
DqnWin32_UTF8ToWChar(dir, wideDir, DQN_ARRAY_COUNT(wideDir));
|
||
|
||
// Enumerate number of files first
|
||
{
|
||
WIN32_FIND_DATAW findData = {0};
|
||
HANDLE findHandle = FindFirstFileW(wideDir, &findData);
|
||
if (findHandle == INVALID_HANDLE_VALUE)
|
||
{
|
||
DQN_WIN32_ERROR_BOX("FindFirstFile() failed.", nullptr);
|
||
return nullptr;
|
||
}
|
||
|
||
bool stayInLoop = true;
|
||
while (stayInLoop)
|
||
{
|
||
BOOL result = FindNextFileW(findHandle, &findData);
|
||
if (result == 0)
|
||
{
|
||
DWORD error = GetLastError();
|
||
if (error != ERROR_NO_MORE_FILES)
|
||
{
|
||
DqnWin32_DisplayErrorCode(error,
|
||
"FindNextFileW() failed");
|
||
}
|
||
|
||
stayInLoop = false;
|
||
}
|
||
else
|
||
{
|
||
currNumFiles++;
|
||
}
|
||
}
|
||
FindClose(findHandle);
|
||
}
|
||
|
||
if (currNumFiles == 0)
|
||
{
|
||
*numFiles = 0;
|
||
return nullptr;
|
||
}
|
||
|
||
{
|
||
WIN32_FIND_DATAW initFind = {0};
|
||
HANDLE findHandle = FindFirstFileW(wideDir, &initFind);
|
||
if (findHandle == INVALID_HANDLE_VALUE)
|
||
{
|
||
DQN_WIN32_ERROR_BOX("FindFirstFile() failed.", nullptr);
|
||
*numFiles = 0;
|
||
return nullptr;
|
||
}
|
||
|
||
char **list = (char **)DqnMem_Calloc(
|
||
sizeof(*list) * (currNumFiles));
|
||
if (!list)
|
||
{
|
||
DQN_WIN32_ERROR_BOX("DqnMem_Calloc() failed.", nullptr);
|
||
*numFiles = 0;
|
||
return nullptr;
|
||
}
|
||
|
||
for (u32 i = 0; i < currNumFiles; i++)
|
||
{
|
||
list[i] = (char *)DqnMem_Calloc(sizeof(**list) * MAX_PATH);
|
||
if (!list[i])
|
||
{
|
||
for (u32 j = 0; j < i; j++)
|
||
DqnMem_Free(list[j]);
|
||
|
||
DQN_WIN32_ERROR_BOX("DqnMem_Clloc() failed.", nullptr);
|
||
*numFiles = 0;
|
||
return nullptr;
|
||
}
|
||
}
|
||
|
||
i32 listIndex = 0;
|
||
WIN32_FIND_DATAW findData = {0};
|
||
while (FindNextFileW(findHandle, &findData) != 0)
|
||
{
|
||
DqnWin32_WCharToUTF8(findData.cFileName, list[listIndex++],
|
||
MAX_PATH);
|
||
}
|
||
|
||
*numFiles = currNumFiles;
|
||
FindClose(findHandle);
|
||
|
||
return list;
|
||
}
|
||
}
|
||
|
||
#endif // DQN_WIN32_PLATFORM
|
||
|
||
#ifdef DQN_UNIX_PLATFORM
|
||
FILE_SCOPE bool DqnFileInternal_UnixGetFileSizeWithStat(const char *const path, size_t *const size)
|
||
{
|
||
struct stat fileStat = {0};
|
||
if (stat(path, &fileStat)) return false;
|
||
*size = fileStat.st_size;
|
||
|
||
return true;
|
||
}
|
||
|
||
FILE_SCOPE size_t DqnFileInternal_UnixGetFileSizeManual(FILE *const handle, const bool rewindHandle)
|
||
{
|
||
u64 fileSizeInBytes = 0;
|
||
|
||
DQN_ASSERT_HARD(handle);
|
||
char c = fgetc(handle);
|
||
while (c != EOF)
|
||
{
|
||
fileSizeInBytes++;
|
||
c = fgetc(handle);
|
||
}
|
||
if (rewindHandle) rewind(handle);
|
||
return fileSizeInBytes;
|
||
}
|
||
|
||
FILE_SCOPE bool DqnFileInternal_UnixOpen(const char *const path,
|
||
DqnFile *const file,
|
||
const u32 permissionFlags,
|
||
const enum DqnFileAction action)
|
||
{
|
||
char operation = 0;
|
||
bool updateFlag = false;
|
||
|
||
if (permissionFlags & DqnFilePermissionFlag_Write)
|
||
{
|
||
updateFlag = true;
|
||
switch (action)
|
||
{
|
||
default: DQN_ASSERT_HARD(DQN_INVALID_CODE_PATH);
|
||
case DqnFileAction_OpenOnly:
|
||
{
|
||
operation = 'r';
|
||
}
|
||
break;
|
||
|
||
case DqnFileAction_CreateIfNotExist:
|
||
case DqnFileAction_ClearIfExist:
|
||
case DqnFileAction_ForceCreate:
|
||
{
|
||
operation = 'w';
|
||
}
|
||
break;
|
||
}
|
||
}
|
||
else if ((permissionFlags & DqnFilePermissionFlag_Read) ||
|
||
(permissionFlags & DqnFilePermissionFlag_Execute))
|
||
{
|
||
if (permissionFlags & DqnFilePermissionFlag_Execute)
|
||
{
|
||
// TODO(doyle): Logging, UNIX doesn't have execute param for file
|
||
// handles. Execution goes through system()
|
||
}
|
||
operation = 'r';
|
||
}
|
||
DQN_ASSERT_HARD(operation != 0);
|
||
|
||
// TODO(doyle): What about not reading as a binary file and appending to end
|
||
// of file.
|
||
u32 modeIndex = 0;
|
||
char mode[4] = {};
|
||
mode[modeIndex++] = operation;
|
||
|
||
if (updateFlag) mode[modeIndex++] = '+';
|
||
|
||
mode[modeIndex++] = 'b';
|
||
DQN_ASSERT_HARD(modeIndex <= DQN_ARRAY_COUNT(mode) - 1);
|
||
|
||
// TODO(doyle): Use open syscall
|
||
// TODO(doyle): Query errno
|
||
FILE *handle = fopen(path, mode);
|
||
if (!handle) return false;
|
||
|
||
if (!DqnFileInternal_UnixGetFileSizeWithStat(path, &file->size))
|
||
{
|
||
// TODO(doyle): Logging
|
||
fclose(handle);
|
||
return false;
|
||
}
|
||
|
||
file->handle = (void *)handle;
|
||
file->permissionFlags = permissionFlags;
|
||
|
||
// NOTE: Can occur in some instances where files are generated on demand,
|
||
// i.e. /proc/cpuinfo. But there can also be zero-byte files, we can't
|
||
// be sure. So manual check by counting bytes
|
||
if (file->size == 0)
|
||
file->size = DqnFileInternal_UnixGetFileSizeManual((FILE *)file->handle, true);
|
||
|
||
return true;
|
||
}
|
||
|
||
DQN_FILE_SCOPE char **DqnFileInternal_PlatformListDir(const char *const dir, u32 *const numFiles)
|
||
{
|
||
if (!dir || !numFiles) return nullptr;
|
||
|
||
// Enumerate num files
|
||
u32 currNumFiles = 0;
|
||
{
|
||
DIR *const dirHandle = opendir(dir);
|
||
if (!dirHandle) return nullptr;
|
||
|
||
struct dirent *dirFile = readdir(dirHandle);
|
||
while (dirFile)
|
||
{
|
||
currNumFiles++;
|
||
dirFile = readdir(dirHandle);
|
||
}
|
||
closedir(dirHandle);
|
||
}
|
||
|
||
if (currNumFiles == 0)
|
||
{
|
||
*numFiles = 0;
|
||
return nullptr;
|
||
}
|
||
|
||
// Create file list
|
||
{
|
||
DIR *const dirHandle = opendir(dir);
|
||
if (!dirHandle) return nullptr;
|
||
|
||
char **list = (char **)DqnMem_Calloc(sizeof(*list) * currNumFiles);
|
||
if (!list)
|
||
{
|
||
// TODO(doyle): Logging
|
||
DQN_ASSERT(DQN_INVALID_CODE_PATH);
|
||
*numFiles = 0;
|
||
return nullptr;
|
||
}
|
||
|
||
struct dirent *dirFile = readdir(dirHandle);
|
||
for (u32 i = 0; i < currNumFiles; i++)
|
||
{
|
||
list[i] = (char *)DqnMem_Calloc(sizeof(**list) *
|
||
DQN_ARRAY_COUNT(dirFile->d_name));
|
||
if (!list[i])
|
||
{
|
||
for (u32 j = 0; j < i; j++) DqnMem_Free(list[j]);
|
||
|
||
// TODO(doyle): Logging
|
||
*numFiles = 0;
|
||
return nullptr;
|
||
}
|
||
}
|
||
|
||
u32 listIndex = 0;
|
||
*numFiles = currNumFiles;
|
||
while (dirFile)
|
||
{
|
||
DqnStr_Copy(list[listIndex++], dirFile->d_name, DQN_ARRAY_COUNT(dirFile->d_name));
|
||
dirFile = readdir(dirHandle);
|
||
}
|
||
closedir(dirHandle);
|
||
|
||
return list;
|
||
}
|
||
}
|
||
|
||
#endif // DQN_UNIX_PLATFORM
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// XPlatform > #DqnFile Implementation
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
DQN_FILE_SCOPE
|
||
bool DqnFile_Open(const char *const path, DqnFile *const file,
|
||
const u32 permissionFlags, const enum DqnFileAction action)
|
||
{
|
||
if (!file || !path) return false;
|
||
|
||
#if defined(DQN_WIN32_PLATFORM)
|
||
// TODO(doyle): MAX PATH is baad
|
||
wchar_t widePath[MAX_PATH] = {0};
|
||
DqnWin32_UTF8ToWChar(path, widePath, DQN_ARRAY_COUNT(widePath));
|
||
return DqnFileInternal_Win32OpenW(widePath, file, permissionFlags, action);
|
||
|
||
#elif defined(DQN_UNIX_PLATFORM)
|
||
return DqnFileInternal_UnixOpen(path, file, permissionFlags, action);
|
||
|
||
#else
|
||
DQN_ASSERT_HARD(DQN_INVALID_CODE_PATH);
|
||
return false;
|
||
|
||
#endif
|
||
}
|
||
|
||
DQN_FILE_SCOPE
|
||
bool DqnFile_OpenW(const wchar_t *const path, DqnFile *const file, const u32 permissionFlags,
|
||
const enum DqnFileAction action)
|
||
{
|
||
if (!file || !path) return false;
|
||
|
||
#if defined(DQN_WIN32_PLATFORM)
|
||
return DqnFileInternal_Win32OpenW(path, file, permissionFlags, action);
|
||
#else
|
||
DQN_ASSERT(DQN_INVALID_CODE_PATH);
|
||
return false;
|
||
#endif
|
||
}
|
||
|
||
DQN_FILE_SCOPE size_t DqnFile_Write(const DqnFile *const file,
|
||
u8 *const buffer,
|
||
const size_t numBytesToWrite,
|
||
const size_t fileOffset)
|
||
{
|
||
size_t numBytesWritten = 0;
|
||
// TODO(doyle): Implement when it's needed
|
||
if (!DQN_ASSERT_MSG(fileOffset == 0, "'fileOffset' not implemented yet")) return 0;
|
||
if (!file || !buffer) return numBytesToWrite;
|
||
|
||
#if defined(DQN_WIN32_PLATFORM)
|
||
DWORD bytesToWrite = (DWORD)numBytesToWrite;
|
||
DWORD bytesWritten;
|
||
BOOL result = WriteFile(file->handle, buffer, bytesToWrite, &bytesWritten, nullptr);
|
||
|
||
numBytesWritten = (size_t)bytesWritten;
|
||
// TODO(doyle): Better logging system
|
||
if (result == 0)
|
||
{
|
||
DQN_WIN32_ERROR_BOX("ReadFile() failed.", nullptr);
|
||
}
|
||
|
||
#elif defined(DQN_UNIX_PLATFORM)
|
||
const size_t ITEMS_TO_WRITE = 1;
|
||
if (fwrite(buffer, numBytesToWrite, ITEMS_TO_WRITE, (FILE *)file->handle) ==
|
||
ITEMS_TO_WRITE)
|
||
{
|
||
rewind((FILE *)file->handle);
|
||
numBytesWritten = ITEMS_TO_WRITE * numBytesToWrite;
|
||
}
|
||
#endif
|
||
|
||
return numBytesWritten;
|
||
}
|
||
|
||
DQN_FILE_SCOPE size_t DqnFile_Read(const DqnFile *const file, u8 *const buffer,
|
||
const size_t numBytesToRead)
|
||
{
|
||
size_t numBytesRead = 0;
|
||
if (file && file->handle && buffer)
|
||
{
|
||
#if defined(DQN_WIN32_PLATFORM)
|
||
DWORD bytesToRead = (DWORD)numBytesToRead;
|
||
DWORD bytesRead = 0;
|
||
HANDLE win32Handle = file->handle;
|
||
|
||
BOOL result = ReadFile(win32Handle, (void *)buffer, bytesToRead,
|
||
&bytesRead, nullptr);
|
||
|
||
numBytesRead = (size_t)bytesRead;
|
||
// TODO(doyle): 0 also means it is completing async, but still valid
|
||
if (result == 0)
|
||
{
|
||
DQN_WIN32_ERROR_BOX("ReadFile() failed.", nullptr);
|
||
}
|
||
|
||
#elif defined(DQN_UNIX_PLATFORM)
|
||
// TODO(doyle): Syscall version
|
||
const size_t ITEMS_TO_READ = 1;
|
||
if (fread(buffer, numBytesToRead, ITEMS_TO_READ, (FILE *)file->handle) ==
|
||
ITEMS_TO_READ)
|
||
{
|
||
rewind((FILE *)file->handle);
|
||
numBytesRead = ITEMS_TO_READ * numBytesToRead;
|
||
}
|
||
else
|
||
{
|
||
// TODO(doyle): Logging, failed read
|
||
}
|
||
#else
|
||
DQN_ASSERT_MSG(DQN_INVALID_CODE_PATH, "Non Win32/Unix path not implemented");
|
||
#endif
|
||
}
|
||
return numBytesRead;
|
||
}
|
||
|
||
DQN_FILE_SCOPE u8 *DqnFile_ReadEntireFileSimpleW(const wchar_t *const path, size_t *const bufSize, DqnMemAPI memAPI)
|
||
{
|
||
// TODO(doyle): Logging
|
||
|
||
size_t requiredSize = 0;
|
||
if (!DqnFile_GetFileSizeW(path, &requiredSize)) return nullptr;
|
||
|
||
DqnMemAPI::Request info = DqnMemAPI::RequestAlloc(memAPI, requiredSize, false);
|
||
u8 *buffer = memAPI.callback(info);
|
||
if (!buffer) return nullptr;
|
||
|
||
size_t bytesRead = 0;
|
||
if (DqnFile_ReadEntireFileW(path, buffer, requiredSize, &bytesRead))
|
||
{
|
||
if (bufSize) *bufSize = requiredSize;
|
||
DQN_ASSERT(bytesRead == requiredSize);
|
||
return buffer;
|
||
}
|
||
|
||
free(buffer);
|
||
return nullptr;
|
||
}
|
||
|
||
DQN_FILE_SCOPE u8 *DqnFile_ReadEntireFileSimple(const char *const path, size_t *const bufSize, DqnMemAPI memAPI)
|
||
{
|
||
// TODO(doyle): Logging
|
||
|
||
size_t requiredSize = 0;
|
||
if (!DqnFile_GetFileSize(path, &requiredSize)) return nullptr;
|
||
|
||
DqnMemAPI::Request info = DqnMemAPI::RequestAlloc(memAPI, requiredSize, false);
|
||
u8 *buffer = (u8 *)memAPI.callback(info);
|
||
if (!buffer) return nullptr;
|
||
|
||
size_t bytesRead = 0;
|
||
if (DqnFile_ReadEntireFile(path, buffer, requiredSize, &bytesRead))
|
||
{
|
||
if (bufSize) *bufSize = requiredSize;
|
||
DQN_ASSERT(bytesRead == requiredSize);
|
||
return buffer;
|
||
}
|
||
|
||
free(buffer);
|
||
return nullptr;
|
||
}
|
||
|
||
DQN_FILE_SCOPE bool DqnFile_ReadEntireFileW(const wchar_t *const path, u8 *const buffer,
|
||
const size_t bufferSize, size_t *const bytesRead)
|
||
{
|
||
if (!path || !buffer) return false;
|
||
|
||
size_t bytesReadInternal;
|
||
DqnFile file = {};
|
||
bool result = DqnFile_OpenW(path, &file, DqnFilePermissionFlag_Read, DqnFileAction_OpenOnly);
|
||
|
||
// TODO(doyle): Logging
|
||
if (!result) goto cleanup;
|
||
|
||
if (file.size > bufferSize)
|
||
{
|
||
result = false;
|
||
goto cleanup;
|
||
}
|
||
|
||
bytesReadInternal = DqnFile_Read(&file, buffer, file.size);
|
||
DQN_ASSERT_HARD(bytesReadInternal == file.size);
|
||
|
||
if (bytesRead) *bytesRead = bytesReadInternal;
|
||
|
||
cleanup:
|
||
DqnFile_Close(&file);
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE bool DqnFile_ReadEntireFile(const char *const path, u8 *const buffer,
|
||
const size_t bufferSize, size_t *const bytesRead)
|
||
{
|
||
if (!path || !buffer) return false;
|
||
|
||
size_t bytesReadInternal;
|
||
DqnFile file = {};
|
||
bool result = DqnFile_Open(path, &file, DqnFilePermissionFlag_Read, DqnFileAction_OpenOnly);
|
||
|
||
// TODO(doyle): Logging
|
||
if (!result) goto cleanup;
|
||
|
||
if (file.size > bufferSize)
|
||
{
|
||
result = false;
|
||
goto cleanup;
|
||
}
|
||
|
||
bytesReadInternal = DqnFile_Read(&file, buffer, file.size);
|
||
DQN_ASSERT_HARD(bytesReadInternal == file.size);
|
||
|
||
if (bytesRead) *bytesRead = bytesReadInternal;
|
||
|
||
cleanup:
|
||
DqnFile_Close(&file);
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE void DqnFile_Close(DqnFile *const file)
|
||
{
|
||
if (file && file->handle)
|
||
{
|
||
#if defined(DQN_WIN32_PLATFORM)
|
||
CloseHandle(file->handle);
|
||
#elif defined(DQN_UNIX_PLATFORM)
|
||
fclose((FILE *)file->handle);
|
||
#endif
|
||
file->handle = nullptr;
|
||
file->size = 0;
|
||
file->permissionFlags = 0;
|
||
}
|
||
}
|
||
|
||
#if defined(DQN_WIN32_PLATFORM)
|
||
DQN_COMPILE_ASSERT(sizeof(DWORD) == sizeof(u32));
|
||
#endif
|
||
|
||
DQN_FILE_SCOPE bool DqnFile_GetFileSizeW(const wchar_t *const path, size_t *const size)
|
||
{
|
||
|
||
#if defined(DQN_WIN32_PLATFORM)
|
||
WIN32_FILE_ATTRIBUTE_DATA attribData = {};
|
||
if (GetFileAttributesExW(path, GetFileExInfoStandard, &attribData))
|
||
{
|
||
// TODO(doyle): What if size_t is < Quad.part?
|
||
LARGE_INTEGER largeInt = {};
|
||
largeInt.HighPart = attribData.nFileSizeHigh;
|
||
largeInt.LowPart = attribData.nFileSizeLow;
|
||
|
||
if (size) *size = (size_t)largeInt.QuadPart;
|
||
return true;
|
||
}
|
||
|
||
#elif defined(DQN_UNIX_PLATFORM)
|
||
// NOTE: Not supported on unix
|
||
DQN_ASSERT_HARD(DQN_INVALID_CODE_PATH);
|
||
|
||
#endif
|
||
|
||
return false;
|
||
}
|
||
|
||
DQN_FILE_SCOPE bool DqnFile_GetFileSize(const char *const path, size_t *const size)
|
||
{
|
||
if (!path || !size) return false;
|
||
|
||
// TODO(doyle): Logging
|
||
#if defined(DQN_WIN32_PLATFORM)
|
||
// TODO(doyle): MAX PATH is baad
|
||
wchar_t widePath[MAX_PATH] = {0};
|
||
DqnWin32_UTF8ToWChar(path, widePath, DQN_ARRAY_COUNT(widePath));
|
||
return DqnFile_GetFileSizeW(widePath, size);
|
||
|
||
#elif defined(DQN_UNIX_PLATFORM)
|
||
// TODO(doyle): Error logging
|
||
if (!DqnFileInternal_UnixGetFileSizeWithStat(path, size)) return false;
|
||
|
||
// NOTE: 0 size can occur in some instances where files are generated on demand,
|
||
// i.e. /proc/cpuinfo
|
||
if (*size == 0)
|
||
{
|
||
// If stat fails, then do a manual byte count
|
||
FILE *handle = fopen(path, "r");
|
||
*size = DqnFileInternal_UnixGetFileSizeManual(handle, false);
|
||
fclose(handle);
|
||
}
|
||
|
||
return true;
|
||
#endif
|
||
}
|
||
|
||
DQN_FILE_SCOPE bool DqnFile_Delete(const char *const path)
|
||
{
|
||
if (!path) return false;
|
||
|
||
// TODO(doyle): Logging
|
||
#if defined(DQN_WIN32_PLATFORM)
|
||
return DeleteFileA(path);
|
||
|
||
#elif defined(DQN_UNIX_PLATFORM)
|
||
i32 result = unlink(path);
|
||
|
||
if (result == 0) return true;
|
||
return false;
|
||
|
||
#endif
|
||
}
|
||
|
||
DQN_FILE_SCOPE bool DqnFile_DeleteW(const wchar_t *const path)
|
||
{
|
||
if (!path) return false;
|
||
|
||
// TODO(doyle): Logging
|
||
#if defined(DQN_WIN32_PLATFORM)
|
||
return DeleteFileW(path);
|
||
|
||
#elif defined(DQN_UNIX_PLATFORM)
|
||
DQN_ASSERT_HARD(DQN_INVALID_CODE_PATH);
|
||
return false;
|
||
|
||
#endif
|
||
}
|
||
|
||
DQN_FILE_SCOPE char **DqnFile_ListDir(const char *const dir, u32 *const numFiles)
|
||
{
|
||
char **result = DqnFileInternal_PlatformListDir(dir, numFiles);
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE void DqnFile_ListDirFree(char **fileList, u32 numFiles)
|
||
{
|
||
if (fileList)
|
||
{
|
||
for (u32 i = 0; i < numFiles; i++)
|
||
{
|
||
if (fileList[i]) DqnMem_Free(fileList[i]);
|
||
fileList[i] = nullptr;
|
||
}
|
||
|
||
DqnMem_Free(fileList);
|
||
}
|
||
}
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// XPlatform > #DqnTimer Implementation
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
#if defined (DQN_WIN32_PLATFORM)
|
||
FILE_SCOPE f64 DqnTimerInternal_Win32QueryPerfCounterTimeInMs()
|
||
{
|
||
LOCAL_PERSIST LARGE_INTEGER queryPerformanceFrequency = {0};
|
||
if (queryPerformanceFrequency.QuadPart == 0)
|
||
{
|
||
QueryPerformanceFrequency(&queryPerformanceFrequency);
|
||
DQN_ASSERT_HARD(queryPerformanceFrequency.QuadPart != 0);
|
||
}
|
||
|
||
LARGE_INTEGER qpcResult;
|
||
QueryPerformanceCounter(&qpcResult);
|
||
|
||
// Convert to microseconds first then divide by ticks per second then to milliseconds
|
||
qpcResult.QuadPart *= 1000000;
|
||
f64 timestamp = qpcResult.QuadPart / (f64)queryPerformanceFrequency.QuadPart;
|
||
timestamp /= 1000.0f;
|
||
return timestamp;
|
||
}
|
||
#endif
|
||
|
||
DQN_FILE_SCOPE f64 DqnTimer_NowInMs()
|
||
{
|
||
f64 result = 0;
|
||
#if defined(DQN_WIN32_PLATFORM)
|
||
result = DQN_MAX(DqnTimerInternal_Win32QueryPerfCounterTimeInMs(), 0);
|
||
|
||
#elif defined(DQN_UNIX_PLATFORM)
|
||
struct timespec timeSpec = {0};
|
||
if (clock_gettime(CLOCK_MONOTONIC, &timeSpec))
|
||
{
|
||
// TODO(doyle): Failed logging
|
||
DQN_ASSERT_HARD(DQN_INVALID_CODE_PATH);
|
||
}
|
||
else
|
||
{
|
||
result = (f64)((timeSpec.tv_sec * 1000.0f) + (timeSpec.tv_nsec / 1000000.0f));
|
||
}
|
||
|
||
#else
|
||
DQN_ASSERT_MSG(DQN_INVALID_CODE_PATH, "Non Unix/Win32 path not implemented yet");
|
||
|
||
#endif
|
||
return result;
|
||
};
|
||
|
||
DQN_FILE_SCOPE f64 DqnTimer_NowInS() { return DqnTimer_NowInMs() / 1000.0f; }
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// XPlatform > #DqnLock Implementation
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
bool DqnLock_Init(DqnLock *const lock)
|
||
{
|
||
if (!lock) return false;
|
||
|
||
#if defined(DQN_WIN32_PLATFORM)
|
||
if (InitializeCriticalSectionEx(&lock->win32Handle, lock->win32SpinCount, 0))
|
||
return true;
|
||
|
||
#elif defined(DQN_UNIX_PLATFORM)
|
||
// NOTE: Static initialise, pre-empt a lock so that it gets initialised as per documentation
|
||
lock->unixHandle = PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP;
|
||
DqnLock_Acquire(lock);
|
||
DqnLock_Release(lock);
|
||
return true;
|
||
|
||
#else
|
||
#error Unsupported platform
|
||
|
||
#endif
|
||
|
||
return false;
|
||
}
|
||
|
||
void DqnLock_Acquire(DqnLock *const lock)
|
||
{
|
||
if (!lock) return;
|
||
|
||
#if defined(DQN_WIN32_PLATFORM)
|
||
EnterCriticalSection(&lock->win32Handle);
|
||
|
||
#elif defined(DQN_UNIX_PLATFORM)
|
||
// TODO(doyle): Better error handling
|
||
i32 error = pthread_mutex_lock(&lock->unixHandle);
|
||
DQN_ASSERT_HARD(error == 0);
|
||
|
||
#else
|
||
#error Unsupported platform
|
||
|
||
#endif
|
||
}
|
||
|
||
void DqnLock_Release(DqnLock *const lock)
|
||
{
|
||
if (!lock) return;
|
||
|
||
#if defined(DQN_WIN32_PLATFORM)
|
||
LeaveCriticalSection(&lock->win32Handle);
|
||
|
||
#elif defined (DQN_UNIX_PLATFORM)
|
||
// TODO(doyle): better error handling
|
||
i32 error = pthread_mutex_unlock(&lock->unixHandle);
|
||
DQN_ASSERT_HARD(error == 0);
|
||
|
||
#else
|
||
#error Unsupported platform
|
||
|
||
#endif
|
||
}
|
||
|
||
void DqnLock_Delete(DqnLock *const lock)
|
||
{
|
||
if (!lock) return;
|
||
|
||
#if defined(DQN_WIN32_PLATFORM)
|
||
DeleteCriticalSection(&lock->win32Handle);
|
||
|
||
#elif defined(DQN_UNIX_PLATFORM)
|
||
i32 error = pthread_mutex_destroy(&lock->unixHandle);
|
||
DQN_ASSERT_HARD(error == 0);
|
||
|
||
#else
|
||
#error Unsupported platform
|
||
|
||
#endif
|
||
}
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// XPlatform > #DqnLock CPP Implementation
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
bool DqnLock::Init() { return DqnLock_Init (this); }
|
||
void DqnLock::Acquire() { DqnLock_Acquire(this); }
|
||
void DqnLock::Release() { DqnLock_Release(this); }
|
||
void DqnLock::Delete() { DqnLock_Delete (this); }
|
||
|
||
DqnLockGuard DqnLock::LockGuard()
|
||
{
|
||
return DqnLockGuard(this, nullptr);
|
||
}
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// XPlatform > #DqnLockGuard CPP Implementation
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
DqnLockGuard::DqnLockGuard(DqnLock *const lock_, bool *const succeeded)
|
||
{
|
||
if (lock_)
|
||
{
|
||
this->lock = lock_;
|
||
this->lock->Acquire();
|
||
if (succeeded) *succeeded = true;
|
||
}
|
||
else
|
||
{
|
||
if (succeeded) *succeeded = false;
|
||
}
|
||
}
|
||
|
||
DqnLockGuard::~DqnLockGuard()
|
||
{
|
||
if (this->lock) this->lock->Release();
|
||
}
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// XPlatform > #DqnJobQueueInternal Implementation
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
|
||
typedef void *DqnThreadCallbackInternal(void *threadParam);
|
||
size_t DQN_JOB_QUEUE_INTERNAL_THREAD_DEFAULT_STACK_SIZE = 0;
|
||
|
||
FILE_SCOPE u32 DqnJobQueueInternal_ThreadCreate(const size_t stackSize,
|
||
DqnThreadCallbackInternal *const threadCallback,
|
||
void *const threadParam, const u32 numThreads)
|
||
{
|
||
u32 numThreadsCreated = 0;
|
||
|
||
#if defined(DQN_WIN32_PLATFORM)
|
||
DQN_ASSERT_HARD(stackSize == 0 || !threadCallback);
|
||
for (u32 i = 0; i < numThreads; i++)
|
||
{
|
||
HANDLE handle = CreateThread(nullptr, stackSize, (LPTHREAD_START_ROUTINE)threadCallback,
|
||
threadParam, 0, nullptr);
|
||
CloseHandle(handle);
|
||
numThreadsCreated++;
|
||
}
|
||
|
||
#elif defined(DQN_UNIX_PLATFORM)
|
||
// TODO(doyle): Better error handling
|
||
pthread_attr_t attribute = {};
|
||
DQN_ASSERT(pthread_attr_init(&attribute) == 0);
|
||
|
||
// Allows us to use pthread_join() which lets us wait till a thread finishes execution
|
||
DQN_ASSERT(pthread_attr_setdetachstate(&attribute, PTHREAD_CREATE_JOINABLE) == 0);
|
||
|
||
// TODO(doyle): Persist thread handles
|
||
for (u32 i = 0; i < numThreads; i++)
|
||
{
|
||
pthread_t thread = {};
|
||
pthread_create(&thread, &attribute, threadCallback, threadParam);
|
||
numThreadsCreated++;
|
||
}
|
||
|
||
DQN_ASSERT(pthread_attr_destroy(&attribute) == 0);
|
||
|
||
#else
|
||
#error Unsupported platform
|
||
|
||
#endif
|
||
|
||
DQN_ASSERT(numThreadsCreated == numThreads);
|
||
return numThreadsCreated;
|
||
}
|
||
|
||
|
||
FILE_SCOPE void *DqnJobQueueInternal_ThreadCallback(void *threadParam)
|
||
{
|
||
DqnJobQueue *queue = (DqnJobQueue *)threadParam;
|
||
for (;;)
|
||
{
|
||
if (!DqnJobQueue_TryExecuteNextJob(queue))
|
||
{
|
||
#if defined(DQN_WIN32_PLATFORM)
|
||
WaitForSingleObjectEx(queue->semaphore, INFINITE, false);
|
||
|
||
#elif defined(DQN_UNIX_PLATFORM)
|
||
sem_wait(&queue->semaphore);
|
||
|
||
#else
|
||
#error Unsupported platform
|
||
|
||
#endif
|
||
}
|
||
}
|
||
}
|
||
|
||
FILE_SCOPE bool DqnJobQueueInternal_CreateSemaphore(DqnJobQueue *const queue, const u32 initSignalCount, const u32 maxSignalCount)
|
||
{
|
||
if (!queue) return false;
|
||
|
||
#if defined(DQN_WIN32_PLATFORM)
|
||
queue->semaphore = (void *)CreateSemaphore(nullptr, initSignalCount, maxSignalCount, nullptr);
|
||
DQN_ASSERT_HARD(queue->semaphore);
|
||
|
||
#elif defined(DQN_UNIX_PLATFORM)
|
||
// TODO(doyle): Use max count for unix
|
||
// TODO(doyle): Error handling
|
||
const u32 UNIX_DONT_SHARE_BETWEEN_PROCESSES = 0;
|
||
i32 error = sem_init(&queue->semaphore, UNIX_DONT_SHARE_BETWEEN_PROCESSES, 0);
|
||
DQN_ASSERT_HARD(error == 0);
|
||
|
||
for (u32 i = 0; i < initSignalCount; i++)
|
||
DQN_ASSERT_HARD(sem_post(&queue->semaphore) == 0);
|
||
|
||
#else
|
||
#error Unknown platform
|
||
|
||
#endif
|
||
|
||
return true;
|
||
}
|
||
|
||
FILE_SCOPE bool DqnJobQueueInternal_ReleaseSemaphore(DqnJobQueue *const queue)
|
||
{
|
||
DQN_ASSERT(queue);
|
||
|
||
#if defined(DQN_WIN32_PLATFORM)
|
||
DQN_ASSERT(queue->semaphore);
|
||
ReleaseSemaphore(queue->semaphore, 1, nullptr);
|
||
|
||
#elif defined(DQN_UNIX_PLATFORM)
|
||
// TODO(doyle): Error handling
|
||
DQN_ASSERT_HARD(sem_post(&queue->semaphore) == 0);
|
||
|
||
#else
|
||
#error Unknown platform
|
||
|
||
#endif
|
||
|
||
return true;
|
||
}
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// XPlatform > #DqnJobQueue Implementation
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
DQN_FILE_SCOPE bool DqnJobQueue_Init(DqnJobQueue *const queue, DqnJob *const jobList,
|
||
const u32 jobListSize, const u32 numThreads)
|
||
{
|
||
if (!queue || !jobList || jobListSize == 0 || numThreads == 0) return false;
|
||
queue->jobList = jobList;
|
||
queue->size = jobListSize;
|
||
|
||
DQN_ASSERT(DqnJobQueueInternal_CreateSemaphore(queue, 0, numThreads));
|
||
|
||
// Create threads
|
||
u32 numThreadsCreated = DqnJobQueueInternal_ThreadCreate(
|
||
DQN_JOB_QUEUE_INTERNAL_THREAD_DEFAULT_STACK_SIZE, DqnJobQueueInternal_ThreadCallback,
|
||
(void *)queue, numThreads);
|
||
DQN_ASSERT_HARD(numThreads == numThreadsCreated);
|
||
|
||
return true;
|
||
}
|
||
|
||
DQN_FILE_SCOPE bool DqnJobQueue_AddJob(DqnJobQueue *const queue, const DqnJob job)
|
||
{
|
||
i32 newJobInsertIndex = (queue->jobInsertIndex + 1) % queue->size;
|
||
if (newJobInsertIndex == queue->jobToExecuteIndex) return false;
|
||
|
||
queue->jobList[queue->jobInsertIndex] = job;
|
||
|
||
DqnAtomic_Add32(&queue->numJobsToComplete, 1);
|
||
DQN_ASSERT(DqnJobQueueInternal_ReleaseSemaphore(queue));
|
||
|
||
queue->jobInsertIndex = newJobInsertIndex;
|
||
return true;
|
||
}
|
||
|
||
DQN_FILE_SCOPE void DqnJobQueue_BlockAndCompleteAllJobs(DqnJobQueue *const queue)
|
||
{
|
||
while (DqnJobQueue_TryExecuteNextJob(queue) || !DqnJobQueue_AllJobsComplete(queue))
|
||
;
|
||
}
|
||
|
||
DQN_FILE_SCOPE bool DqnJobQueue_TryExecuteNextJob(DqnJobQueue *const queue)
|
||
{
|
||
if (!queue) return false;
|
||
|
||
i32 originalJobToExecute = queue->jobToExecuteIndex;
|
||
if (originalJobToExecute != queue->jobInsertIndex)
|
||
{
|
||
i32 newJobIndexForNextThread = (originalJobToExecute + 1) % queue->size;
|
||
i32 index = DqnAtomic_CompareSwap32(&queue->jobToExecuteIndex, newJobIndexForNextThread,
|
||
originalJobToExecute);
|
||
|
||
// NOTE: If we weren't successful at the interlock, another thread has
|
||
// taken the work and we can't know if there's more work or not. So
|
||
// irrespective of that result, return true to let the thread check
|
||
// again for more work.
|
||
if (index == originalJobToExecute)
|
||
{
|
||
DqnJob job = queue->jobList[index];
|
||
job.callback(queue, job.userData);
|
||
DqnAtomic_Add32(&queue->numJobsToComplete, -1);
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
return false;
|
||
}
|
||
|
||
DQN_FILE_SCOPE bool DqnJobQueue_AllJobsComplete(DqnJobQueue *const queue)
|
||
{
|
||
if (!queue) return false;
|
||
|
||
bool result = (queue->numJobsToComplete == 0);
|
||
return result;
|
||
}
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// XPlatform > #DqnJobQueue CPP Implementation
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
bool DqnJobQueue::Init(DqnJob *const jobList_, const u32 jobListSize, const u32 numThreads)
|
||
{
|
||
bool result = DqnJobQueue_Init(this, jobList_, jobListSize, numThreads);
|
||
return result;
|
||
}
|
||
|
||
bool DqnJobQueue::AddJob (const DqnJob job) { return DqnJobQueue_AddJob(this, job); }
|
||
void DqnJobQueue::BlockAndCompleteAllJobs() { DqnJobQueue_BlockAndCompleteAllJobs(this); }
|
||
bool DqnJobQueue::TryExecuteNextJob() { return DqnJobQueue_TryExecuteNextJob(this); }
|
||
bool DqnJobQueue::AllJobsComplete () { return DqnJobQueue_AllJobsComplete(this); }
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// XPlatform > #DqnAtomic Implementation
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
|
||
#if defined(DQN_WIN32_PLATFORM)
|
||
DQN_COMPILE_ASSERT(sizeof(LONG) == sizeof(i32));
|
||
#endif
|
||
|
||
DQN_FILE_SCOPE i32 DqnAtomic_CompareSwap32(i32 volatile *const dest, const i32 swapVal,
|
||
const i32 compareVal)
|
||
{
|
||
i32 result = 0;
|
||
#if defined(DQN_WIN32_PLATFORM)
|
||
result = (i32)InterlockedCompareExchange((LONG volatile *)dest, (LONG)swapVal, (LONG)compareVal);
|
||
|
||
#elif defined(DQN_UNIX_PLATFORM)
|
||
result = __sync_val_compare_and_swap(dest, compareVal, swapVal);
|
||
|
||
#else
|
||
#error Unsupported platform
|
||
|
||
#endif
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE i32 DqnAtomic_Add32(i32 volatile *const src, const i32 value)
|
||
{
|
||
i32 result = 0;
|
||
#if defined(DQN_WIN32_PLATFORM)
|
||
result = (i32)InterlockedAdd((LONG volatile *)src, value);
|
||
|
||
#elif defined(DQN_UNIX_PLATFORM)
|
||
result = __sync_add_and_fetch(src, value);
|
||
|
||
#else
|
||
#error Unsupported platform
|
||
|
||
#endif
|
||
|
||
return result;
|
||
}
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// XPlatform > #DqnPlatformInternal Implementation
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
#if defined(DQN_UNIX_PLATFORM)
|
||
FILE_SCOPE void DqnPlatformInternal_UnixGetNumCoresAndThreads(u32 *const numCores,
|
||
u32 *const numThreadsPerCore)
|
||
{
|
||
if (!numThreadsPerCore && !numCores) return;
|
||
|
||
// TODO(doyle): Not exactly standard
|
||
DqnFile file = {};
|
||
DQN_ASSERT_HARD(
|
||
DqnFile_Open("/proc/cpuinfo", &file, DqnFilePermissionFlag_Read, DqnFileAction_OpenOnly));
|
||
DQN_ASSERT_HARD(file.size > 0);
|
||
|
||
u8 *readBuffer = (u8 *)DqnMem_Calloc(file.size);
|
||
if (readBuffer)
|
||
{
|
||
size_t bytesRead = DqnFile_Read(&file, readBuffer, file.size);
|
||
DQN_ASSERT_HARD(bytesRead == file.size);
|
||
|
||
const char *srcPtr = (char *)readBuffer;
|
||
u32 srcLen = file.size;
|
||
|
||
#define DQN_ADVANCE_CHAR_PTR_AND_LEN_INTERNAL(ptr, len, offset) \
|
||
ptr += offset; \
|
||
len -= offset
|
||
|
||
if (numThreadsPerCore)
|
||
{
|
||
*numThreadsPerCore = 0;
|
||
// Find the offset to the processor field and move to it
|
||
const char processorStr[] = "processor";
|
||
i32 processorOffset = DqnStr_FindFirstOccurence(srcPtr, srcLen, processorStr,
|
||
DQN_ARRAY_COUNT(processorStr));
|
||
DQN_ASSERT_HARD(processorOffset != -1);
|
||
DQN_ADVANCE_CHAR_PTR_AND_LEN_INTERNAL(srcPtr, srcLen, processorOffset);
|
||
|
||
// Find the offset to the colon delimiter and advance to 1 after it
|
||
i32 colonOffset = DqnStr_FindFirstOccurence(srcPtr, srcLen, ":", 1) + 1;
|
||
DQN_ASSERT_HARD(colonOffset != -1);
|
||
DQN_ADVANCE_CHAR_PTR_AND_LEN_INTERNAL(srcPtr, srcLen, colonOffset);
|
||
|
||
// Read num processors, i.e. logical cores/hyper threads
|
||
*numThreadsPerCore = Dqn_StrToI64(srcPtr, srcLen);
|
||
if (*numThreadsPerCore == 0) *numThreadsPerCore = 1;
|
||
}
|
||
|
||
if (numCores)
|
||
{
|
||
*numCores = 0;
|
||
// Find the offset to the cpu cores field and move to it
|
||
const char cpuCoresStr[] = "cpu cores";
|
||
i32 cpuCoresOffset = DqnStr_FindFirstOccurence(srcPtr, srcLen, cpuCoresStr,
|
||
DQN_ARRAY_COUNT(cpuCoresStr));
|
||
DQN_ASSERT_HARD(cpuCoresOffset != -1);
|
||
DQN_ADVANCE_CHAR_PTR_AND_LEN_INTERNAL(srcPtr, srcLen, cpuCoresOffset);
|
||
|
||
// Find the offset to the colon delimiter and advance to 1 after it
|
||
i32 colonOffset = DqnStr_FindFirstOccurence(srcPtr, srcLen, ":", 1) + 1;
|
||
DQN_ASSERT_HARD(colonOffset != -1);
|
||
DQN_ADVANCE_CHAR_PTR_AND_LEN_INTERNAL(srcPtr, srcLen, colonOffset);
|
||
|
||
// Read num cores value, i.e. physical cores
|
||
*numCores = Dqn_StrToI64(srcPtr, srcLen);
|
||
}
|
||
DqnFile_Close(&file);
|
||
DqnMem_Free(readBuffer);
|
||
}
|
||
else
|
||
{
|
||
// TODO(doyle): Out of mem
|
||
DQN_ASSERT_HARD(DQN_INVALID_CODE_PATH);
|
||
}
|
||
}
|
||
#endif // DQN_UNIX_PLATFORM
|
||
|
||
#if defined(DQN_WIN32_PLATFORM)
|
||
FILE_SCOPE void DqnPlatformInternal_Win32GetNumCoresAndThreads(u32 *const numCores,
|
||
u32 *const numThreadsPerCore)
|
||
{
|
||
if (numThreadsPerCore)
|
||
{
|
||
SYSTEM_INFO systemInfo;
|
||
GetNativeSystemInfo(&systemInfo);
|
||
*numThreadsPerCore = systemInfo.dwNumberOfProcessors;
|
||
}
|
||
|
||
if (numCores)
|
||
{
|
||
*numCores = 0;
|
||
DWORD requiredSize = 0;
|
||
u8 insufficientBuffer = {0};
|
||
GetLogicalProcessorInformationEx(
|
||
RelationProcessorCore, (SYSTEM_LOGICAL_PROCESSOR_INFORMATION_EX *)insufficientBuffer,
|
||
&requiredSize);
|
||
|
||
u8 *rawProcInfoArray = (u8 *)DqnMem_Calloc(requiredSize);
|
||
if (!DQN_ASSERT_MSG(rawProcInfoArray, "Calloc failed, could not allocate memory"))
|
||
{
|
||
return;
|
||
}
|
||
|
||
if (GetLogicalProcessorInformationEx(
|
||
RelationProcessorCore, (SYSTEM_LOGICAL_PROCESSOR_INFORMATION_EX *)rawProcInfoArray,
|
||
&requiredSize))
|
||
{
|
||
SYSTEM_LOGICAL_PROCESSOR_INFORMATION_EX *logicalProcInfo =
|
||
(SYSTEM_LOGICAL_PROCESSOR_INFORMATION_EX *)rawProcInfoArray;
|
||
DWORD bytesRead = 0;
|
||
|
||
do
|
||
{
|
||
// NOTE: High efficiency value has greater performance and less efficiency.
|
||
PROCESSOR_RELATIONSHIP *procInfo = &logicalProcInfo->Processor;
|
||
// u32 efficiency = procInfo->EfficiencyClass;
|
||
(*numCores)++;
|
||
DQN_ASSERT_HARD(logicalProcInfo->Relationship == RelationProcessorCore);
|
||
DQN_ASSERT_HARD(procInfo->GroupCount == 1);
|
||
|
||
bytesRead += logicalProcInfo->Size;
|
||
logicalProcInfo =
|
||
(SYSTEM_LOGICAL_PROCESSOR_INFORMATION_EX *)((u8 *)logicalProcInfo +
|
||
logicalProcInfo->Size);
|
||
} while (bytesRead < requiredSize);
|
||
}
|
||
else
|
||
{
|
||
DqnWin32_DisplayLastError("GetLogicalProcessorInformationEx() failed");
|
||
}
|
||
|
||
DqnMem_Free(rawProcInfoArray);
|
||
}
|
||
}
|
||
#endif // DQN_WIN32_PLATFORM
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// XPlatform > #DqnPlatform Implementation
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
DQN_FILE_SCOPE void DqnPlatform_GetNumThreadsAndCores(u32 *const numCores, u32 *const numThreadsPerCore)
|
||
{
|
||
#if defined(DQN_WIN32_PLATFORM)
|
||
DqnPlatformInternal_Win32GetNumCoresAndThreads(numCores, numThreadsPerCore);
|
||
|
||
#elif defined(DQN_UNIX_PLATFORM)
|
||
DqnPlatformInternal_UnixGetNumCoresAndThreads(numCores, numThreadsPerCore);
|
||
|
||
#else
|
||
#error Unsupported platform
|
||
|
||
#endif
|
||
}
|
||
#endif // DQN_XPLATFORM_LAYER
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// #Platform Implementation
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
|
||
#ifdef DQN_WIN32_PLATFORM
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// #Win32Platform Implementation
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// Win32Platform > #DqnWin32 Implementation
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
DQN_FILE_SCOPE i32 DqnWin32_UTF8ToWChar(const char *const in,
|
||
wchar_t *const out, const i32 outLen)
|
||
{
|
||
i32 result = MultiByteToWideChar(CP_UTF8, 0, in, -1, out, outLen);
|
||
|
||
if (result == 0xFFFD || 0)
|
||
{
|
||
DQN_WIN32_ERROR_BOX("WideCharToMultiByte() failed.", nullptr);
|
||
return -1;
|
||
}
|
||
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE i32 DqnWin32_WCharToUTF8(const wchar_t *const in,
|
||
char *const out, const i32 outLen)
|
||
{
|
||
i32 result =
|
||
WideCharToMultiByte(CP_UTF8, 0, in, -1, out, outLen, nullptr, nullptr);
|
||
|
||
if (result == 0xFFFD || 0)
|
||
{
|
||
DQN_WIN32_ERROR_BOX("WideCharToMultiByte() failed.", nullptr);
|
||
return -1;
|
||
}
|
||
|
||
return result;
|
||
}
|
||
|
||
DQN_FILE_SCOPE void DqnWin32_GetClientDim(const HWND window, LONG *const width, LONG *const height)
|
||
{
|
||
RECT rect;
|
||
GetClientRect(window, &rect);
|
||
if (width) *width = rect.right - rect.left;
|
||
if (height) *height = rect.bottom - rect.top;
|
||
}
|
||
|
||
DQN_FILE_SCOPE void DqnWin32_GetRectDim(const RECT rect, LONG *const width, LONG *const height)
|
||
{
|
||
if (width) *width = rect.right - rect.left;
|
||
if (height) *height = rect.bottom - rect.top;
|
||
}
|
||
|
||
DQN_FILE_SCOPE void DqnWin32_DisplayLastError(const char *const errorPrefix)
|
||
{
|
||
DWORD error = GetLastError();
|
||
char errorMsg[1024] = {0};
|
||
FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
|
||
nullptr, error, 0, errorMsg, DQN_ARRAY_COUNT(errorMsg), nullptr);
|
||
|
||
if (errorPrefix)
|
||
{
|
||
char formattedError[2048] = {0};
|
||
Dqn_sprintf(formattedError, "%s: %s", errorPrefix, errorMsg);
|
||
DQN_WIN32_ERROR_BOX(formattedError, nullptr);
|
||
}
|
||
else
|
||
{
|
||
DQN_WIN32_ERROR_BOX(errorMsg, nullptr);
|
||
}
|
||
}
|
||
|
||
const i32 DQN_WIN32_INTERNAL_ERROR_MSG_SIZE = 2048;
|
||
DQN_FILE_SCOPE void DqnWin32_DisplayErrorCode(const DWORD error, const char *const errorPrefix)
|
||
{
|
||
char errorMsg[DQN_WIN32_INTERNAL_ERROR_MSG_SIZE] = {0};
|
||
FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
|
||
nullptr, error, 0, errorMsg, DQN_ARRAY_COUNT(errorMsg), nullptr);
|
||
|
||
char formattedError[2048] = {0};
|
||
Dqn_sprintf(formattedError, "%s: %s", errorPrefix, errorMsg);
|
||
DQN_WIN32_ERROR_BOX(formattedError, nullptr);
|
||
}
|
||
|
||
DQN_FILE_SCOPE void DqnWin32_OutputDebugString(const char *const formatStr, ...)
|
||
{
|
||
char str[DQN_WIN32_INTERNAL_ERROR_MSG_SIZE] = {0};
|
||
|
||
va_list argList;
|
||
va_start(argList, formatStr);
|
||
{
|
||
i32 numCopied = Dqn_vsprintf(str, formatStr, argList);
|
||
DQN_ASSERT_HARD(numCopied < DQN_ARRAY_COUNT(str));
|
||
}
|
||
va_end(argList);
|
||
|
||
OutputDebugStringA(str);
|
||
}
|
||
|
||
DQN_FILE_SCOPE i32 DqnWin32_GetEXEDirectory(char *const buf, const u32 bufLen)
|
||
{
|
||
if (!buf || bufLen == 0) return -1;
|
||
u32 copiedLen = GetModuleFileNameA(nullptr, buf, bufLen);
|
||
if (copiedLen == bufLen) return -1;
|
||
|
||
// NOTE: Should always work if GetModuleFileName works and we're running an
|
||
// executable.
|
||
i32 lastSlashIndex = 0;
|
||
for (i32 i = copiedLen; i > 0; i--)
|
||
{
|
||
if (buf[i] == '\\')
|
||
{
|
||
lastSlashIndex = i;
|
||
break;
|
||
}
|
||
}
|
||
|
||
return lastSlashIndex;
|
||
}
|
||
|
||
#endif // DQN_WIN32_PLATFORM
|