1174 lines
39 KiB
C++
1174 lines
39 KiB
C++
#pragma once
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#include "dqn.h"
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/*
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////////////////////////////////////////////////////////////////////////////////////////////////////
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//
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// $$$$$$\ $$$$$$$$\ $$$$$$$\ $$$$$$\ $$\ $$\ $$$$$$\
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// $$ __$$\\__$$ __|$$ __$$\ \_$$ _|$$$\ $$ |$$ __$$\
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// $$ / \__| $$ | $$ | $$ | $$ | $$$$\ $$ |$$ / \__|
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// \$$$$$$\ $$ | $$$$$$$ | $$ | $$ $$\$$ |$$ |$$$$\
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// \____$$\ $$ | $$ __$$< $$ | $$ \$$$$ |$$ |\_$$ |
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// $$\ $$ | $$ | $$ | $$ | $$ | $$ |\$$$ |$$ | $$ |
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// \$$$$$$ | $$ | $$ | $$ |$$$$$$\ $$ | \$$ |\$$$$$$ |
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// \______/ \__| \__| \__|\______|\__| \__| \______/
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//
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// dqn_string.cpp
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//
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////////////////////////////////////////////////////////////////////////////////////////////////////
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*/
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// NOTE: [$CSTR] Dqn_CStr8 /////////////////////////////////////////////////////////////////////////
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DQN_API Dqn_usize Dqn_CStr8_FSize(DQN_FMT_ATTRIB char const *fmt, ...)
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{
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va_list args;
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va_start(args, fmt);
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Dqn_usize result = DQN_VSNPRINTF(nullptr, 0, fmt, args);
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va_end(args);
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return result;
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}
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DQN_API Dqn_usize Dqn_CStr8_FVSize(DQN_FMT_ATTRIB char const *fmt, va_list args)
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{
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va_list args_copy;
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va_copy(args_copy, args);
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Dqn_usize result = DQN_VSNPRINTF(nullptr, 0, fmt, args_copy);
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va_end(args_copy);
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return result;
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}
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DQN_API Dqn_usize Dqn_CStr8_Size(char const *src)
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{
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Dqn_usize result = 0;
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while (src && src[0] != 0) {
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src++;
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result++;
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}
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return result;
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}
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DQN_API Dqn_usize Dqn_CStr16_Size(wchar_t const *src)
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{
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Dqn_usize result = 0;
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while (src && src[0] != 0) {
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src++;
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result++;
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}
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return result;
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}
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// NOTE: [$STR6] Dqn_Str16 /////////////////////////////////////////////////////////////////////////
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DQN_API bool operator==(Dqn_Str16 const &lhs, Dqn_Str16 const &rhs)
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{
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bool result = false;
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if (lhs.size == rhs.size)
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result = DQN_MEMCMP(lhs.data, rhs.data, lhs.size * sizeof(*lhs.data)) == 0;
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return result;
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}
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DQN_API bool operator!=(Dqn_Str16 const &lhs, Dqn_Str16 const &rhs)
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{
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bool result = !(lhs == rhs);
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return result;
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}
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// NOTE: [$STR8] Dqn_Str8 //////////////////////////////////////////////////////////////////////////
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DQN_API Dqn_Str8 Dqn_Str8_InitCStr8(char const *src)
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{
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Dqn_usize size = Dqn_CStr8_Size(src);
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Dqn_Str8 result = Dqn_Str8_Init(src, size);
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return result;
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}
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DQN_API bool Dqn_Str8_IsAll(Dqn_Str8 string, Dqn_Str8IsAll is_all)
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{
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bool result = Dqn_Str8_HasData(string);
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if (!result)
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return result;
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switch (is_all) {
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case Dqn_Str8IsAll_Digits: {
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for (Dqn_usize index = 0; result && index < string.size; index++)
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result = string.data[index] >= '0' && string.data[index] <= '9';
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} break;
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case Dqn_Str8IsAll_Hex: {
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Dqn_Str8 trimmed = Dqn_Str8_TrimPrefix(string, DQN_STR8("0x"), Dqn_Str8EqCase_Insensitive);
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for (Dqn_usize index = 0; result && index < trimmed.size; index++) {
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char ch = trimmed.data[index];
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result = (ch >= '0' && ch <= '9') || (ch >= 'a' && ch <= 'f') || (ch >= 'A' && ch <= 'F');
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}
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} break;
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}
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return result;
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}
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DQN_API Dqn_Str8 Dqn_Str8_Slice(Dqn_Str8 string, Dqn_usize offset, Dqn_usize size)
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{
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Dqn_Str8 result = Dqn_Str8_Init(string.data, 0);
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if (!Dqn_Str8_HasData(string))
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return result;
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Dqn_usize capped_offset = DQN_MIN(offset, string.size);
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Dqn_usize max_size = string.size - capped_offset;
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Dqn_usize capped_size = DQN_MIN(size, max_size);
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result = Dqn_Str8_Init(string.data + capped_offset, capped_size);
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return result;
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}
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DQN_API Dqn_Str8 Dqn_Str8_Advance(Dqn_Str8 string, Dqn_usize amount)
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{
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Dqn_Str8 result = Dqn_Str8_Slice(string, amount, DQN_USIZE_MAX);
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return result;
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}
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DQN_API Dqn_Str8 Dqn_Str8_NextLine(Dqn_Str8 string)
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{
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Dqn_Str8 result = Dqn_Str8_BinarySplit(string, DQN_STR8("\n")).rhs;
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return result;
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}
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DQN_API Dqn_Str8BinarySplitResult Dqn_Str8_BinarySplitArray(Dqn_Str8 string, Dqn_Str8 const *find, Dqn_usize find_size)
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{
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Dqn_Str8BinarySplitResult result = {};
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if (!Dqn_Str8_HasData(string) || !find || find_size == 0)
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return result;
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result.lhs = string;
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for (size_t index = 0; !result.rhs.data && index < string.size; index++) {
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for (Dqn_usize find_index = 0; find_index < find_size; find_index++) {
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Dqn_Str8 find_item = find[find_index];
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Dqn_Str8 string_slice = Dqn_Str8_Slice(string, index, find_item.size);
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if (Dqn_Str8_Eq(string_slice, find_item)) {
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result.lhs.size = index;
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result.rhs.data = string_slice.data + find_item.size;
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result.rhs.size = string.size - (index + find_item.size);
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break;
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}
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}
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}
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return result;
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}
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DQN_API Dqn_Str8BinarySplitResult Dqn_Str8_BinarySplit(Dqn_Str8 string, Dqn_Str8 find)
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{
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Dqn_Str8BinarySplitResult result = Dqn_Str8_BinarySplitArray(string, &find, 1);
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return result;
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}
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DQN_API Dqn_Str8BinarySplitResult Dqn_Str8_BinarySplitLastArray(Dqn_Str8 string, Dqn_Str8 const *find, Dqn_usize find_size)
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{
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Dqn_Str8BinarySplitResult result = {};
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if (!Dqn_Str8_HasData(string) || !find || find_size == 0)
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return result;
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result.lhs = string;
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for (size_t index = string.size - 1; !result.rhs.data && index < string.size; index--) {
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for (Dqn_usize find_index = 0; find_index < find_size; find_index++) {
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Dqn_Str8 find_item = find[find_index];
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Dqn_Str8 string_slice = Dqn_Str8_Slice(string, index, find_item.size);
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if (Dqn_Str8_Eq(string_slice, find_item)) {
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result.lhs.size = index;
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result.rhs.data = string_slice.data + find_item.size;
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result.rhs.size = string.size - (index + find_item.size);
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break;
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}
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}
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}
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return result;
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}
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DQN_API Dqn_Str8BinarySplitResult Dqn_Str8_BinarySplitLast(Dqn_Str8 string, Dqn_Str8 find)
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{
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Dqn_Str8BinarySplitResult result = Dqn_Str8_BinarySplitLastArray(string, &find, 1);
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return result;
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}
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DQN_API Dqn_usize Dqn_Str8_Split(Dqn_Str8 string, Dqn_Str8 delimiter, Dqn_Str8 *splits, Dqn_usize splits_count, Dqn_Str8SplitIncludeEmptyStrings mode)
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{
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Dqn_usize result = 0; // The number of splits in the actual string.
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if (!Dqn_Str8_HasData(string) || !Dqn_Str8_HasData(delimiter) || delimiter.size <= 0)
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return result;
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Dqn_Str8BinarySplitResult split = {};
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Dqn_Str8 first = string;
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do {
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split = Dqn_Str8_BinarySplit(first, delimiter);
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if (split.lhs.size || mode == Dqn_Str8SplitIncludeEmptyStrings_Yes) {
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if (splits && result < splits_count)
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splits[result] = split.lhs;
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result++;
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}
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first = split.rhs;
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} while (first.size);
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return result;
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}
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DQN_API Dqn_Slice<Dqn_Str8> Dqn_Str8_SplitAlloc(Dqn_Arena *arena, Dqn_Str8 string, Dqn_Str8 delimiter, Dqn_Str8SplitIncludeEmptyStrings mode)
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{
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Dqn_Slice<Dqn_Str8> result = {};
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Dqn_usize splits_required = Dqn_Str8_Split(string, delimiter, /*splits*/ nullptr, /*count*/ 0, mode);
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result.data = Dqn_Arena_NewArray(arena, Dqn_Str8, splits_required, Dqn_ZeroMem_No);
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if (result.data) {
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result.size = Dqn_Str8_Split(string, delimiter, result.data, splits_required, mode);
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DQN_ASSERT(splits_required == result.size);
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}
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return result;
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}
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DQN_API Dqn_Str8FindResult Dqn_Str8_FindStr8Array(Dqn_Str8 string, Dqn_Str8 const *find, Dqn_usize find_size, Dqn_Str8EqCase eq_case)
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{
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Dqn_Str8FindResult result = {};
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if (!Dqn_Str8_HasData(string) || !find || find_size == 0)
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return result;
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for (Dqn_usize index = 0; !result.found && index < string.size; index++) {
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for (Dqn_usize find_index = 0; find_index < find_size; find_index++) {
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Dqn_Str8 find_item = find[find_index];
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Dqn_Str8 string_slice = Dqn_Str8_Slice(string, index, find_item.size);
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if (Dqn_Str8_Eq(string_slice, find_item, eq_case)) {
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result.found = true;
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result.index = index;
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result.start_to_before_match = Dqn_Str8_Init(string.data, index);
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result.match = Dqn_Str8_Init(string.data + index, find_item.size);
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result.match_to_end_of_buffer = Dqn_Str8_Init(result.match.data, string.size - index);
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break;
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}
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}
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}
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return result;
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}
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DQN_API Dqn_Str8FindResult Dqn_Str8_FindStr8(Dqn_Str8 string, Dqn_Str8 find, Dqn_Str8EqCase eq_case)
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{
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Dqn_Str8FindResult result = Dqn_Str8_FindStr8Array(string, &find, 1, eq_case);
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return result;
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}
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DQN_API Dqn_Str8FindResult Dqn_Str8_Find(Dqn_Str8 string, uint32_t flags)
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{
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Dqn_Str8FindResult result = {};
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for (size_t index = 0; !result.found && index < string.size; index++) {
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result.found |= ((flags & Dqn_Str8FindFlag_Digit) && Dqn_Char_IsDigit(string.data[index]));
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result.found |= ((flags & Dqn_Str8FindFlag_Alphabet) && Dqn_Char_IsAlphabet(string.data[index]));
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result.found |= ((flags & Dqn_Str8FindFlag_Whitespace) && Dqn_Char_IsWhitespace(string.data[index]));
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result.found |= ((flags & Dqn_Str8FindFlag_Plus) && string.data[index] == '+');
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result.found |= ((flags & Dqn_Str8FindFlag_Minus) && string.data[index] == '-');
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if (result.found) {
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result.index = index;
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result.match = Dqn_Str8_Init(string.data + index, 1);
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result.match_to_end_of_buffer = Dqn_Str8_Init(result.match.data, string.size - index);
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}
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}
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return result;
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}
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DQN_API Dqn_Str8 Dqn_Str8_Segment(Dqn_Arena *arena, Dqn_Str8 src, Dqn_usize segment_size, char segment_char)
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{
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if (!segment_size || !Dqn_Str8_HasData(src)) {
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Dqn_Str8 result = Dqn_Str8_Copy(arena, src);
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return result;
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}
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Dqn_usize segments = src.size / segment_size;
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if (src.size % segment_size == 0)
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segments--;
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Dqn_usize segment_counter = 0;
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Dqn_Str8 result = Dqn_Str8_Alloc(arena, src.size + segments, Dqn_ZeroMem_Yes);
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Dqn_usize write_index = 0;
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DQN_FOR_UINDEX(src_index, src.size) {
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result.data[write_index++] = src.data[src_index];
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if ((src_index + 1) % segment_size == 0 && segment_counter < segments) {
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result.data[write_index++] = segment_char;
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segment_counter++;
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}
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DQN_ASSERTF(write_index <= result.size, "result.size=%zu, write_index=%zu", result.size, write_index);
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}
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DQN_ASSERTF(write_index == result.size, "result.size=%zu, write_index=%zu", result.size, write_index);
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return result;
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}
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DQN_API Dqn_Str8 Dqn_Str8_ReverseSegment(Dqn_Arena *arena, Dqn_Str8 src, Dqn_usize segment_size, char segment_char)
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{
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if (!segment_size || !Dqn_Str8_HasData(src)) {
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Dqn_Str8 result = Dqn_Str8_Copy(arena, src);
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return result;
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}
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Dqn_usize segments = src.size / segment_size;
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if (src.size % segment_size == 0)
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segments--;
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Dqn_usize write_counter = 0;
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Dqn_usize segment_counter = 0;
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Dqn_Str8 result = Dqn_Str8_Alloc(arena, src.size + segments, Dqn_ZeroMem_Yes);
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Dqn_usize write_index = result.size - 1;
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DQN_MSVC_WARNING_PUSH
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DQN_MSVC_WARNING_DISABLE(6293) // NOTE: Ill-defined loop
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for (size_t src_index = src.size - 1; src_index < src.size; src_index--) {
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DQN_MSVC_WARNING_POP
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result.data[write_index--] = src.data[src_index];
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if (++write_counter % segment_size == 0 && segment_counter < segments) {
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result.data[write_index--] = segment_char;
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segment_counter++;
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}
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}
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DQN_ASSERT(write_index == SIZE_MAX);
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return result;
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}
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DQN_API bool Dqn_Str8_Eq(Dqn_Str8 lhs, Dqn_Str8 rhs, Dqn_Str8EqCase eq_case)
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{
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if (lhs.size != rhs.size)
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return false;
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if (lhs.size == 0)
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return true;
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if (!lhs.data || !rhs.data)
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return false;
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bool result = true;
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switch (eq_case) {
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case Dqn_Str8EqCase_Sensitive: {
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result = (DQN_MEMCMP(lhs.data, rhs.data, lhs.size) == 0);
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} break;
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case Dqn_Str8EqCase_Insensitive: {
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for (Dqn_usize index = 0; index < lhs.size && result; index++)
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result = (Dqn_Char_ToLower(lhs.data[index]) == Dqn_Char_ToLower(rhs.data[index]));
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} break;
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}
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return result;
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}
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DQN_API bool Dqn_Str8_EqInsensitive(Dqn_Str8 lhs, Dqn_Str8 rhs)
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{
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bool result = Dqn_Str8_Eq(lhs, rhs, Dqn_Str8EqCase_Insensitive);
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return result;
|
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}
|
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|
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DQN_API bool Dqn_Str8_StartsWith(Dqn_Str8 string, Dqn_Str8 prefix, Dqn_Str8EqCase eq_case)
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{
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Dqn_Str8 substring = {string.data, DQN_MIN(prefix.size, string.size)};
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bool result = Dqn_Str8_Eq(substring, prefix, eq_case);
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return result;
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}
|
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|
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DQN_API bool Dqn_Str8_StartsWithInsensitive(Dqn_Str8 string, Dqn_Str8 prefix)
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{
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bool result = Dqn_Str8_StartsWith(string, prefix, Dqn_Str8EqCase_Insensitive);
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return result;
|
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}
|
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|
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DQN_API bool Dqn_Str8_EndsWith(Dqn_Str8 string, Dqn_Str8 suffix, Dqn_Str8EqCase eq_case)
|
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{
|
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Dqn_Str8 substring = {string.data + string.size - suffix.size, DQN_MIN(string.size, suffix.size)};
|
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bool result = Dqn_Str8_Eq(substring, suffix, eq_case);
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return result;
|
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}
|
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|
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DQN_API bool Dqn_Str8_EndsWithInsensitive(Dqn_Str8 string, Dqn_Str8 suffix)
|
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{
|
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bool result = Dqn_Str8_EndsWith(string, suffix, Dqn_Str8EqCase_Insensitive);
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return result;
|
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}
|
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|
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DQN_API bool Dqn_Str8_HasChar(Dqn_Str8 string, char ch)
|
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{
|
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bool result = false;
|
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for (Dqn_usize index = 0; !result && index < string.size; index++)
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result = string.data[index] == ch;
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return result;
|
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}
|
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|
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DQN_API Dqn_Str8 Dqn_Str8_TrimPrefix(Dqn_Str8 string, Dqn_Str8 prefix, Dqn_Str8EqCase eq_case)
|
||
{
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Dqn_Str8 result = string;
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if (Dqn_Str8_StartsWith(string, prefix, eq_case)) {
|
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result.data += prefix.size;
|
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result.size -= prefix.size;
|
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}
|
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return result;
|
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}
|
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|
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DQN_API Dqn_Str8 Dqn_Str8_TrimHexPrefix(Dqn_Str8 string)
|
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{
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Dqn_Str8 result = Dqn_Str8_TrimPrefix(string, DQN_STR8("0x"), Dqn_Str8EqCase_Insensitive);
|
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return result;
|
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}
|
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|
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DQN_API Dqn_Str8 Dqn_Str8_TrimSuffix(Dqn_Str8 string, Dqn_Str8 suffix, Dqn_Str8EqCase eq_case)
|
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{
|
||
Dqn_Str8 result = string;
|
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if (Dqn_Str8_EndsWith(string, suffix, eq_case))
|
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result.size -= suffix.size;
|
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return result;
|
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}
|
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|
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DQN_API Dqn_Str8 Dqn_Str8_TrimAround(Dqn_Str8 string, Dqn_Str8 trim_string)
|
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{
|
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Dqn_Str8 result = Dqn_Str8_TrimPrefix(string, trim_string);
|
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result = Dqn_Str8_TrimSuffix(result, trim_string);
|
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return result;
|
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}
|
||
|
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DQN_API Dqn_Str8 Dqn_Str8_TrimWhitespaceAround(Dqn_Str8 string)
|
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{
|
||
Dqn_Str8 result = string;
|
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if (!Dqn_Str8_HasData(string))
|
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return result;
|
||
|
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char const *start = string.data;
|
||
char const *end = string.data + string.size;
|
||
while (start < end && Dqn_Char_IsWhitespace(start[0]))
|
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start++;
|
||
|
||
while (end > start && Dqn_Char_IsWhitespace(end[-1]))
|
||
end--;
|
||
|
||
result = Dqn_Str8_Init(start, end - start);
|
||
return result;
|
||
}
|
||
|
||
DQN_API Dqn_Str8 Dqn_Str8_TrimByteOrderMark(Dqn_Str8 string)
|
||
{
|
||
Dqn_Str8 result = string;
|
||
if (!Dqn_Str8_HasData(result))
|
||
return result;
|
||
|
||
// TODO(dqn): This is little endian
|
||
Dqn_Str8 UTF8_BOM = DQN_STR8("\xEF\xBB\xBF");
|
||
Dqn_Str8 UTF16_BOM_BE = DQN_STR8("\xEF\xFF");
|
||
Dqn_Str8 UTF16_BOM_LE = DQN_STR8("\xFF\xEF");
|
||
Dqn_Str8 UTF32_BOM_BE = DQN_STR8("\x00\x00\xFE\xFF");
|
||
Dqn_Str8 UTF32_BOM_LE = DQN_STR8("\xFF\xFE\x00\x00");
|
||
|
||
result = Dqn_Str8_TrimPrefix(result, UTF8_BOM, Dqn_Str8EqCase_Sensitive);
|
||
result = Dqn_Str8_TrimPrefix(result, UTF16_BOM_BE, Dqn_Str8EqCase_Sensitive);
|
||
result = Dqn_Str8_TrimPrefix(result, UTF16_BOM_LE, Dqn_Str8EqCase_Sensitive);
|
||
result = Dqn_Str8_TrimPrefix(result, UTF32_BOM_BE, Dqn_Str8EqCase_Sensitive);
|
||
result = Dqn_Str8_TrimPrefix(result, UTF32_BOM_LE, Dqn_Str8EqCase_Sensitive);
|
||
return result;
|
||
}
|
||
|
||
DQN_API Dqn_Str8 Dqn_Str8_FileNameFromPath(Dqn_Str8 path)
|
||
{
|
||
Dqn_Str8 separators[] = {DQN_STR8("/"), DQN_STR8("\\")};
|
||
Dqn_Str8BinarySplitResult split = Dqn_Str8_BinarySplitLastArray(path, separators, DQN_ARRAY_UCOUNT(separators));
|
||
Dqn_Str8 result = Dqn_Str8_HasData(split.rhs) ? split.rhs : split.lhs;
|
||
return result;
|
||
}
|
||
|
||
DQN_API Dqn_Str8 Dqn_Str8_FileNameNoExtension(Dqn_Str8 path)
|
||
{
|
||
Dqn_Str8 file_name = Dqn_Str8_FileNameFromPath(path);
|
||
Dqn_Str8 result = Dqn_Str8_FilePathNoExtension(file_name);
|
||
return result;
|
||
}
|
||
|
||
DQN_API Dqn_Str8 Dqn_Str8_FilePathNoExtension(Dqn_Str8 path)
|
||
{
|
||
Dqn_Str8BinarySplitResult split = Dqn_Str8_BinarySplitLast(path, DQN_STR8("."));
|
||
Dqn_Str8 result = split.lhs;
|
||
return result;
|
||
}
|
||
|
||
DQN_API Dqn_Str8 Dqn_Str8_FileExtension(Dqn_Str8 path)
|
||
{
|
||
Dqn_Str8BinarySplitResult split = Dqn_Str8_BinarySplitLast(path, DQN_STR8("."));
|
||
Dqn_Str8 result = split.rhs;
|
||
return result;
|
||
}
|
||
|
||
DQN_API Dqn_Str8ToU64Result Dqn_Str8_ToU64(Dqn_Str8 string, char separator)
|
||
{
|
||
// NOTE: Argument check
|
||
Dqn_Str8ToU64Result result = {};
|
||
if (!Dqn_Str8_HasData(string)) {
|
||
result.success = true;
|
||
return result;
|
||
}
|
||
|
||
// NOTE: Sanitize input/output
|
||
Dqn_Str8 trim_string = Dqn_Str8_TrimWhitespaceAround(string);
|
||
if (trim_string.size == 0) {
|
||
result.success = true;
|
||
return result;
|
||
}
|
||
|
||
// NOTE: Handle prefix '+'
|
||
Dqn_usize start_index = 0;
|
||
if (!Dqn_Char_IsDigit(trim_string.data[0])) {
|
||
if (trim_string.data[0] != '+')
|
||
return result;
|
||
start_index++;
|
||
}
|
||
|
||
// NOTE: Convert the string number to the binary number
|
||
for (Dqn_usize index = start_index; index < trim_string.size; index++) {
|
||
char ch = trim_string.data[index];
|
||
if (index) {
|
||
if (separator != 0 && ch == separator)
|
||
continue;
|
||
}
|
||
|
||
if (!Dqn_Char_IsDigit(ch))
|
||
return result;
|
||
|
||
result.value = Dqn_Safe_MulU64(result.value, 10);
|
||
uint64_t digit = ch - '0';
|
||
result.value = Dqn_Safe_AddU64(result.value, digit);
|
||
}
|
||
|
||
result.success = true;
|
||
return result;
|
||
}
|
||
|
||
DQN_API Dqn_Str8ToI64Result Dqn_Str8_ToI64(Dqn_Str8 string, char separator)
|
||
{
|
||
// NOTE: Argument check
|
||
Dqn_Str8ToI64Result result = {};
|
||
if (!Dqn_Str8_HasData(string)) {
|
||
result.success = true;
|
||
return result;
|
||
}
|
||
|
||
// NOTE: Sanitize input/output
|
||
Dqn_Str8 trim_string = Dqn_Str8_TrimWhitespaceAround(string);
|
||
if (trim_string.size == 0) {
|
||
result.success = true;
|
||
return result;
|
||
}
|
||
|
||
bool negative = false;
|
||
Dqn_usize start_index = 0;
|
||
if (!Dqn_Char_IsDigit(trim_string.data[0])) {
|
||
negative = (trim_string.data[start_index] == '-');
|
||
if (!negative && trim_string.data[0] != '+')
|
||
return result;
|
||
start_index++;
|
||
}
|
||
|
||
// NOTE: Convert the string number to the binary number
|
||
for (Dqn_usize index = start_index; index < trim_string.size; index++) {
|
||
char ch = trim_string.data[index];
|
||
if (index) {
|
||
if (separator != 0 && ch == separator)
|
||
continue;
|
||
}
|
||
|
||
if (!Dqn_Char_IsDigit(ch))
|
||
return result;
|
||
|
||
result.value = Dqn_Safe_MulU64(result.value, 10);
|
||
uint64_t digit = ch - '0';
|
||
result.value = Dqn_Safe_AddU64(result.value, digit);
|
||
}
|
||
|
||
if (negative)
|
||
result.value *= -1;
|
||
|
||
result.success = true;
|
||
return result;
|
||
}
|
||
|
||
DQN_API Dqn_Str8 Dqn_Str8_Replace(Dqn_Str8 string,
|
||
Dqn_Str8 find,
|
||
Dqn_Str8 replace,
|
||
Dqn_usize start_index,
|
||
Dqn_Arena *arena,
|
||
Dqn_Str8EqCase eq_case)
|
||
{
|
||
Dqn_Str8 result = {};
|
||
if (!Dqn_Str8_HasData(string) || !Dqn_Str8_HasData(find) || find.size > string.size || find.size == 0 || string.size == 0) {
|
||
result = Dqn_Str8_Copy(arena, string);
|
||
return result;
|
||
}
|
||
|
||
Dqn_TLSTMem tmem = Dqn_TLS_TMem(arena);
|
||
Dqn_Str8Builder string_builder = Dqn_Str8Builder_Init(tmem.arena);
|
||
Dqn_usize max = string.size - find.size;
|
||
Dqn_usize head = start_index;
|
||
|
||
for (Dqn_usize tail = head; tail <= max; tail++) {
|
||
Dqn_Str8 check = Dqn_Str8_Slice(string, tail, find.size);
|
||
if (!Dqn_Str8_Eq(check, find, eq_case))
|
||
continue;
|
||
|
||
if (start_index > 0 && string_builder.string_size == 0) {
|
||
// User provided a hint in the string to start searching from, we
|
||
// need to add the string up to the hint. We only do this if there's
|
||
// a replacement action, otherwise we have a special case for no
|
||
// replacements, where the entire string gets copied.
|
||
Dqn_Str8 slice = Dqn_Str8_Init(string.data, head);
|
||
Dqn_Str8Builder_AddRef(&string_builder, slice);
|
||
}
|
||
|
||
Dqn_Str8 range = Dqn_Str8_Slice(string, head, (tail - head));
|
||
Dqn_Str8Builder_AddRef(&string_builder, range);
|
||
Dqn_Str8Builder_AddRef(&string_builder, replace);
|
||
head = tail + find.size;
|
||
tail += find.size - 1; // NOTE: -1 since the for loop will post increment us past the end of the find string
|
||
}
|
||
|
||
if (string_builder.string_size == 0) {
|
||
// NOTE: No replacement possible, so we just do a full-copy
|
||
result = Dqn_Str8_Copy(arena, string);
|
||
} else {
|
||
Dqn_Str8 remainder = Dqn_Str8_Init(string.data + head, string.size - head);
|
||
Dqn_Str8Builder_AddRef(&string_builder, remainder);
|
||
result = Dqn_Str8Builder_Build(&string_builder, arena);
|
||
}
|
||
|
||
return result;
|
||
}
|
||
|
||
DQN_API Dqn_Str8 Dqn_Str8_ReplaceInsensitive(Dqn_Str8 string, Dqn_Str8 find, Dqn_Str8 replace, Dqn_usize start_index, Dqn_Arena *arena)
|
||
{
|
||
Dqn_Str8 result = Dqn_Str8_Replace(string, find, replace, start_index, arena, Dqn_Str8EqCase_Insensitive);
|
||
return result;
|
||
}
|
||
|
||
DQN_API void Dqn_Str8_Remove(Dqn_Str8 *string, Dqn_usize offset, Dqn_usize size)
|
||
{
|
||
if (!string || !Dqn_Str8_HasData(*string))
|
||
return;
|
||
|
||
char *end = string->data + string->size;
|
||
char *dest = DQN_MIN(string->data + offset, end);
|
||
char *src = DQN_MIN(string->data + offset + size, end);
|
||
Dqn_usize bytes_to_move = end - src;
|
||
DQN_MEMMOVE(dest, src, bytes_to_move);
|
||
string->size -= bytes_to_move;
|
||
}
|
||
|
||
#if defined(__cplusplus)
|
||
DQN_API bool operator==(Dqn_Str8 const &lhs, Dqn_Str8 const &rhs)
|
||
{
|
||
bool result = Dqn_Str8_Eq(lhs, rhs, Dqn_Str8EqCase_Sensitive);
|
||
return result;
|
||
}
|
||
|
||
DQN_API bool operator!=(Dqn_Str8 const &lhs, Dqn_Str8 const &rhs)
|
||
{
|
||
bool result = !(lhs == rhs);
|
||
return result;
|
||
}
|
||
#endif
|
||
|
||
DQN_API Dqn_Str8 Dqn_Str8_InitF(Dqn_Arena *arena, DQN_FMT_ATTRIB char const *fmt, ...)
|
||
{
|
||
va_list va;
|
||
va_start(va, fmt);
|
||
Dqn_Str8 result = Dqn_Str8_InitFV(arena, fmt, va);
|
||
va_end(va);
|
||
return result;
|
||
}
|
||
|
||
DQN_API Dqn_Str8 Dqn_Str8_InitFV(Dqn_Arena *arena, DQN_FMT_ATTRIB char const *fmt, va_list args)
|
||
{
|
||
Dqn_Str8 result = {};
|
||
if (!fmt)
|
||
return result;
|
||
|
||
Dqn_usize size = Dqn_CStr8_FVSize(fmt, args);
|
||
if (size) {
|
||
result = Dqn_Str8_Alloc(arena, size, Dqn_ZeroMem_No);
|
||
if (Dqn_Str8_HasData(result))
|
||
DQN_VSNPRINTF(result.data, Dqn_Safe_SaturateCastISizeToInt(size + 1 /*null-terminator*/), fmt, args);
|
||
}
|
||
return result;
|
||
}
|
||
|
||
DQN_API Dqn_Str8 Dqn_Str8_Alloc(Dqn_Arena *arena, Dqn_usize size, Dqn_ZeroMem zero_mem)
|
||
{
|
||
Dqn_Str8 result = {};
|
||
result.data = Dqn_Arena_NewArray(arena, char, size + 1, zero_mem);
|
||
if (result.data)
|
||
result.size = size;
|
||
if (zero_mem == Dqn_ZeroMem_No)
|
||
result.data[result.size] = 0;
|
||
return result;
|
||
}
|
||
|
||
DQN_API Dqn_Str8 Dqn_Str8_CopyCString(Dqn_Arena *arena, char const *string, Dqn_usize size)
|
||
{
|
||
Dqn_Str8 result = {};
|
||
if (!string)
|
||
return result;
|
||
|
||
result = Dqn_Str8_Alloc(arena, size, Dqn_ZeroMem_No);
|
||
if (Dqn_Str8_HasData(result)) {
|
||
DQN_MEMCPY(result.data, string, size);
|
||
result.data[size] = 0;
|
||
}
|
||
return result;
|
||
}
|
||
|
||
DQN_API Dqn_Str8 Dqn_Str8_Copy(Dqn_Arena *arena, Dqn_Str8 string)
|
||
{
|
||
Dqn_Str8 result = Dqn_Str8_CopyCString(arena, string.data, string.size);
|
||
return result;
|
||
}
|
||
|
||
// NOTE: [$STRB] Dqn_Str8Builder ////////////////////////////////////////////////////////////////
|
||
DQN_API Dqn_Str8Builder Dqn_Str8Builder_Init(Dqn_Arena *arena)
|
||
{
|
||
Dqn_Str8Builder result = {};
|
||
result.arena = arena;
|
||
return result;
|
||
}
|
||
|
||
DQN_API Dqn_Str8Builder Dqn_Str8Builder_InitArrayRef(Dqn_Arena *arena,
|
||
Dqn_Str8 const *strings,
|
||
Dqn_usize size)
|
||
{
|
||
Dqn_Str8Builder result = Dqn_Str8Builder_Init(arena);
|
||
Dqn_Str8Builder_AddArrayRef(&result, strings, size);
|
||
return result;
|
||
}
|
||
|
||
DQN_API Dqn_Str8Builder Dqn_Str8Builder_InitArrayCopy(Dqn_Arena *arena,
|
||
Dqn_Str8 const *strings,
|
||
Dqn_usize size)
|
||
{
|
||
Dqn_Str8Builder result = Dqn_Str8Builder_Init(arena);
|
||
Dqn_Str8Builder_AddArrayCopy(&result, strings, size);
|
||
return result;
|
||
}
|
||
|
||
DQN_API bool Dqn_Str8Builder_AddArrayRef(Dqn_Str8Builder *builder, Dqn_Str8 const *strings, Dqn_usize size)
|
||
{
|
||
if (!builder)
|
||
return false;
|
||
|
||
if (!strings || size <= 0)
|
||
return true;
|
||
|
||
Dqn_Str8Link *links = Dqn_Arena_NewArray(builder->arena, Dqn_Str8Link, size, Dqn_ZeroMem_No);
|
||
if (!links)
|
||
return false;
|
||
|
||
DQN_FOR_UINDEX(index, size) {
|
||
Dqn_Str8 string = strings[index];
|
||
Dqn_Str8Link *link = links + index;
|
||
|
||
link->string = string;
|
||
link->next = NULL;
|
||
|
||
if (builder->head)
|
||
builder->tail->next = link;
|
||
else
|
||
builder->head = link;
|
||
|
||
builder->tail = link;
|
||
builder->count++;
|
||
builder->string_size += string.size;
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
DQN_API bool Dqn_Str8Builder_AddArrayCopy(Dqn_Str8Builder *builder, Dqn_Str8 const *strings, Dqn_usize size)
|
||
{
|
||
if (!builder)
|
||
return false;
|
||
|
||
if (!strings || size <= 0)
|
||
return true;
|
||
|
||
Dqn_ArenaTempMem tmp_mem = Dqn_Arena_TempMemBegin(builder->arena);
|
||
bool result = true;
|
||
Dqn_Str8 *strings_copy = Dqn_Arena_NewArray(builder->arena, Dqn_Str8, size, Dqn_ZeroMem_No);
|
||
DQN_FOR_UINDEX (index, size) {
|
||
strings_copy[index] = Dqn_Str8_Copy(builder->arena, strings[index]);
|
||
if (strings_copy[index].size != strings[index].size) {
|
||
result = false;
|
||
break;
|
||
}
|
||
}
|
||
|
||
if (result)
|
||
result = Dqn_Str8Builder_AddArrayRef(builder, strings_copy, size);
|
||
|
||
if (!result)
|
||
Dqn_Arena_TempMemEnd(tmp_mem);
|
||
|
||
return result;
|
||
}
|
||
|
||
DQN_API bool Dqn_Str8Builder_AddSliceRef(Dqn_Str8Builder *builder, Dqn_Slice<Dqn_Str8> array)
|
||
{
|
||
bool result = Dqn_Str8Builder_AddArrayRef(builder, array.data, array.size);
|
||
return result;
|
||
}
|
||
|
||
DQN_API bool Dqn_Str8Builder_AddSliceCopy(Dqn_Str8Builder *builder, Dqn_Slice<Dqn_Str8> array)
|
||
{
|
||
bool result = Dqn_Str8Builder_AddArrayCopy(builder, array.data, array.size);
|
||
return result;
|
||
}
|
||
|
||
DQN_API bool Dqn_Str8Builder_AddRef(Dqn_Str8Builder *builder, Dqn_Str8 string)
|
||
{
|
||
bool result = Dqn_Str8Builder_AddArrayRef(builder, &string, 1);
|
||
return result;
|
||
}
|
||
|
||
DQN_API bool Dqn_Str8Builder_AddCopy(Dqn_Str8Builder *builder, Dqn_Str8 string)
|
||
{
|
||
bool result = Dqn_Str8Builder_AddArrayCopy(builder, &string, 1);
|
||
return result;
|
||
}
|
||
|
||
DQN_API bool Dqn_Str8Builder_AddFV(Dqn_Str8Builder *builder, DQN_FMT_ATTRIB char const *fmt, va_list args)
|
||
{
|
||
Dqn_Str8 string = Dqn_Str8_InitFV(builder->arena, fmt, args);
|
||
Dqn_ArenaTempMem temp_mem = Dqn_Arena_TempMemBegin(builder->arena);
|
||
bool result = Dqn_Str8Builder_AddRef(builder, string);
|
||
if (!result)
|
||
Dqn_Arena_TempMemEnd(temp_mem);
|
||
return result;
|
||
}
|
||
|
||
DQN_API bool Dqn_Str8Builder_AddF(Dqn_Str8Builder *builder, DQN_FMT_ATTRIB char const *fmt, ...)
|
||
{
|
||
va_list args;
|
||
va_start(args, fmt);
|
||
bool result = Dqn_Str8Builder_AddFV(builder, fmt, args);
|
||
va_end(args);
|
||
return result;
|
||
}
|
||
|
||
DQN_API bool Dqn_Str8Builder_AddBytesRef(Dqn_Str8Builder *builder, void const *ptr, Dqn_usize size)
|
||
{
|
||
Dqn_Str8 input = Dqn_Str8_Init(ptr, size);
|
||
bool result = Dqn_Str8Builder_AddRef(builder, input);
|
||
return result;
|
||
}
|
||
|
||
DQN_API bool Dqn_Str8Builder_AddBytesCopy(Dqn_Str8Builder *builder, void const *ptr, Dqn_usize size)
|
||
{
|
||
Dqn_Str8 input = Dqn_Str8_Init(ptr, size);
|
||
bool result = Dqn_Str8Builder_AddCopy(builder, input);
|
||
return result;
|
||
}
|
||
|
||
static bool Dqn_Str8Builder_AddBuilder_(Dqn_Str8Builder *dest, Dqn_Str8Builder const *src, bool copy)
|
||
{
|
||
if (!dest)
|
||
return false;
|
||
if (!src)
|
||
return true;
|
||
|
||
Dqn_Arena_TempMemBegin(dest->arena);
|
||
Dqn_Str8Link *links = Dqn_Arena_NewArray(dest->arena, Dqn_Str8Link, src->count, Dqn_ZeroMem_No);
|
||
if (!links)
|
||
return false;
|
||
|
||
Dqn_Str8Link *first = nullptr;
|
||
Dqn_Str8Link *last = nullptr;
|
||
Dqn_usize link_index = 0;
|
||
bool result = true;
|
||
for (Dqn_Str8Link const *it = src->head; it; it = it->next) {
|
||
Dqn_Str8Link *link = links + link_index++;
|
||
link->next = nullptr;
|
||
link->string = it->string;
|
||
|
||
if (copy) {
|
||
link->string = Dqn_Str8_Copy(dest->arena, it->string);
|
||
if (link->string.size != it->string.size) {
|
||
result = false;
|
||
break;
|
||
}
|
||
}
|
||
|
||
if (last) {
|
||
last->next = link;
|
||
} else {
|
||
first = link;
|
||
}
|
||
last = link;
|
||
}
|
||
|
||
if (result) {
|
||
if (dest->head)
|
||
dest->tail->next = first;
|
||
else
|
||
dest->head = first;
|
||
dest->tail = last;
|
||
dest->count += src->count;
|
||
dest->string_size += src->string_size;
|
||
}
|
||
return true;
|
||
}
|
||
|
||
DQN_API bool Dqn_Str8Builder_AddBuilderRef(Dqn_Str8Builder *dest, Dqn_Str8Builder const *src)
|
||
{
|
||
bool result = Dqn_Str8Builder_AddBuilder_(dest, src, false);
|
||
return result;
|
||
}
|
||
|
||
DQN_API bool Dqn_Str8Builder_AddBuilderCopy(Dqn_Str8Builder *dest, Dqn_Str8Builder const *src)
|
||
{
|
||
bool result = Dqn_Str8Builder_AddBuilder_(dest, src, true);
|
||
return result;
|
||
}
|
||
|
||
DQN_API bool Dqn_Str8Builder_Erase(Dqn_Str8Builder *builder, Dqn_Str8 string)
|
||
{
|
||
for (Dqn_Str8Link **it = &builder->head; *it; it = &((*it)->next)) {
|
||
if ((*it)->string == string) {
|
||
*it = (*it)->next;
|
||
builder->string_size -= string.size;
|
||
builder->count -= 1;
|
||
return true;
|
||
}
|
||
}
|
||
return false;
|
||
}
|
||
|
||
DQN_API Dqn_Str8Builder Dqn_Str8Builder_Copy(Dqn_Arena *arena, Dqn_Str8Builder const *builder)
|
||
{
|
||
Dqn_Str8Builder result = Dqn_Str8Builder_Init(arena);
|
||
Dqn_Str8Builder_AddBuilderCopy(&result, builder);
|
||
return result;
|
||
}
|
||
|
||
DQN_API Dqn_Str8 Dqn_Str8Builder_Build(Dqn_Str8Builder const *builder, Dqn_Arena *arena)
|
||
{
|
||
Dqn_Str8 result = Dqn_Str8Builder_BuildDelimited(builder, DQN_STR8(""), arena);
|
||
return result;
|
||
}
|
||
|
||
DQN_API Dqn_Str8 Dqn_Str8Builder_BuildDelimited(Dqn_Str8Builder const *builder, Dqn_Str8 delimiter, Dqn_Arena *arena)
|
||
{
|
||
Dqn_Str8 result = DQN_ZERO_INIT;
|
||
if (!builder || builder->string_size <= 0 || builder->count <= 0)
|
||
return result;
|
||
|
||
Dqn_usize size_for_delimiter = Dqn_Str8_HasData(delimiter) ? ((builder->count - 1) * delimiter.size) : 0;
|
||
result.data = Dqn_Arena_NewArray(arena,
|
||
char,
|
||
builder->string_size + size_for_delimiter + 1 /*null terminator*/,
|
||
Dqn_ZeroMem_No);
|
||
if (!result.data)
|
||
return result;
|
||
|
||
for (Dqn_Str8Link *link = builder->head; link; link = link->next) {
|
||
DQN_MEMCPY(result.data + result.size, link->string.data, link->string.size);
|
||
result.size += link->string.size;
|
||
if (link->next && Dqn_Str8_HasData(delimiter)) {
|
||
DQN_MEMCPY(result.data + result.size, delimiter.data, delimiter.size);
|
||
result.size += delimiter.size;
|
||
}
|
||
}
|
||
|
||
result.data[result.size] = 0;
|
||
DQN_ASSERT(result.size == builder->string_size + size_for_delimiter);
|
||
return result;
|
||
}
|
||
|
||
DQN_API Dqn_Str8 Dqn_Str8Builder_BuildCRT(Dqn_Str8Builder const *builder)
|
||
{
|
||
Dqn_Str8 result = DQN_ZERO_INIT;
|
||
if (!builder || builder->string_size <= 0 || builder->count <= 0)
|
||
return result;
|
||
|
||
result.data = DQN_CAST(char *)malloc(builder->string_size + 1);
|
||
if (!result.data)
|
||
return result;
|
||
|
||
for (Dqn_Str8Link *link = builder->head; link; link = link->next) {
|
||
DQN_MEMCPY(result.data + result.size, link->string.data, link->string.size);
|
||
result.size += link->string.size;
|
||
}
|
||
|
||
result.data[result.size] = 0;
|
||
DQN_ASSERT(result.size == builder->string_size);
|
||
return result;
|
||
}
|
||
|
||
DQN_API Dqn_Slice<Dqn_Str8> Dqn_Str8Builder_BuildSlice(Dqn_Str8Builder const *builder, Dqn_Arena *arena)
|
||
{
|
||
Dqn_Slice<Dqn_Str8> result = DQN_ZERO_INIT;
|
||
if (!builder || builder->string_size <= 0 || builder->count <= 0)
|
||
return result;
|
||
|
||
result = Dqn_Slice_Alloc<Dqn_Str8>(arena, builder->count, Dqn_ZeroMem_No);
|
||
if (!result.data)
|
||
return result;
|
||
|
||
Dqn_usize slice_index = 0;
|
||
for (Dqn_Str8Link *link = builder->head; link; link = link->next)
|
||
result.data[slice_index++] = Dqn_Str8_Copy(arena, link->string);
|
||
|
||
DQN_ASSERT(slice_index == builder->count);
|
||
return result;
|
||
}
|
||
|
||
DQN_API void Dqn_Str8Builder_Print(Dqn_Str8Builder const *builder)
|
||
{
|
||
for (Dqn_Str8Link *link = builder ? builder->head : nullptr; link; link = link->next)
|
||
Dqn_Print(link->string);
|
||
}
|
||
|
||
DQN_API void Dqn_Str8Builder_PrintLn(Dqn_Str8Builder const *builder)
|
||
{
|
||
for (Dqn_Str8Link *link = builder ? builder->head : nullptr; link; link = link->next) {
|
||
if (link->next) {
|
||
Dqn_Print(link->string);
|
||
} else {
|
||
Dqn_Print_Ln(link->string);
|
||
}
|
||
}
|
||
}
|
||
|
||
// NOTE: [$CHAR] Dqn_Char //////////////////////////////////////////////////////////////////////////
|
||
DQN_API bool Dqn_Char_IsAlphabet(char ch)
|
||
{
|
||
bool result = (ch >= 'A' && ch <= 'Z') || (ch >= 'a' && ch <= 'z');
|
||
return result;
|
||
}
|
||
|
||
DQN_API bool Dqn_Char_IsDigit(char ch)
|
||
{
|
||
bool result = (ch >= '0' && ch <= '9');
|
||
return result;
|
||
}
|
||
|
||
DQN_API bool Dqn_Char_IsAlphaNum(char ch)
|
||
{
|
||
bool result = Dqn_Char_IsAlphabet(ch) || Dqn_Char_IsDigit(ch);
|
||
return result;
|
||
}
|
||
|
||
DQN_API bool Dqn_Char_IsWhitespace(char ch)
|
||
{
|
||
bool result = (ch == ' ' || ch == '\t' || ch == '\n' || ch == '\r');
|
||
return result;
|
||
}
|
||
|
||
DQN_API bool Dqn_Char_IsHex(char ch)
|
||
{
|
||
bool result = ((ch >= 'a' && ch <= 'f') || (ch >= 'A' && ch <= 'F') || (ch >= '0' && ch <= '9'));
|
||
return result;
|
||
}
|
||
|
||
DQN_API Dqn_CharHexToU8 Dqn_Char_HexToU8(char ch)
|
||
{
|
||
Dqn_CharHexToU8 result = {};
|
||
result.success = true;
|
||
if (ch >= 'a' && ch <= 'f')
|
||
result.value = ch - 'a' + 10;
|
||
else if (ch >= 'A' && ch <= 'F')
|
||
result.value = ch - 'A' + 10;
|
||
else if (ch >= '0' && ch <= '9')
|
||
result.value = ch - '0';
|
||
else
|
||
result.success = false;
|
||
return result;
|
||
}
|
||
|
||
static char constexpr DQN_HEX_LUT[] = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'};
|
||
DQN_API char Dqn_Char_ToHex(char ch)
|
||
{
|
||
char result = DQN_CAST(char)-1;
|
||
if (ch < 16)
|
||
result = DQN_HEX_LUT[DQN_CAST(uint8_t)ch];
|
||
return result;
|
||
}
|
||
|
||
DQN_API char Dqn_Char_ToHexUnchecked(char ch)
|
||
{
|
||
char result = DQN_HEX_LUT[DQN_CAST(uint8_t)ch];
|
||
return result;
|
||
}
|
||
|
||
DQN_API char Dqn_Char_ToLower(char ch)
|
||
{
|
||
char result = ch;
|
||
if (result >= 'A' && result <= 'Z')
|
||
result += 'a' - 'A';
|
||
return result;
|
||
}
|
||
|
||
// NOTE: [$UTFX] Dqn_UTF ///////////////////////////////////////////////////////////////////////////
|
||
DQN_API int Dqn_UTF8_EncodeCodepoint(uint8_t utf8[4], uint32_t codepoint)
|
||
{
|
||
// NOTE: Table from https://www.reedbeta.com/blog/programmers-intro-to-unicode/
|
||
// ----------------------------------------+----------------------------+--------------------+
|
||
// UTF-8 (binary) | Code point (binary) | Range |
|
||
// ----------------------------------------+----------------------------+--------------------+
|
||
// 0xxx'xxxx | xxx'xxxx | U+0000 - U+007F |
|
||
// 110x'xxxx 10yy'yyyy | xxx'xxyy'yyyy | U+0080 - U+07FF |
|
||
// 1110'xxxx 10yy'yyyy 10zz'zzzz | xxxx'yyyy'yyzz'zzzz | U+0800 - U+FFFF |
|
||
// 1111'0xxx 10yy'yyyy 10zz'zzzz 10ww'wwww | x'xxyy'yyyy'zzzz'zzww'wwww | U+10000 - U+10FFFF |
|
||
// ----------------------------------------+----------------------------+--------------------+
|
||
|
||
if (codepoint <= 0b0111'1111) {
|
||
utf8[0] = DQN_CAST(uint8_t) codepoint;
|
||
return 1;
|
||
}
|
||
|
||
if (codepoint <= 0b0111'1111'1111) {
|
||
utf8[0] = (0b1100'0000 | ((codepoint >> 6) & 0b01'1111)); // x
|
||
utf8[1] = (0b1000'0000 | ((codepoint >> 0) & 0b11'1111)); // y
|
||
return 2;
|
||
}
|
||
|
||
if (codepoint <= 0b1111'1111'1111'1111) {
|
||
utf8[0] = (0b1110'0000 | ((codepoint >> 12) & 0b00'1111)); // x
|
||
utf8[1] = (0b1000'0000 | ((codepoint >> 6) & 0b11'1111)); // y
|
||
utf8[2] = (0b1000'0000 | ((codepoint >> 0) & 0b11'1111)); // z
|
||
return 3;
|
||
}
|
||
|
||
if (codepoint <= 0b1'1111'1111'1111'1111'1111) {
|
||
utf8[0] = (0b1111'0000 | ((codepoint >> 18) & 0b00'0111)); // x
|
||
utf8[1] = (0b1000'0000 | ((codepoint >> 12) & 0b11'1111)); // y
|
||
utf8[2] = (0b1000'0000 | ((codepoint >> 6) & 0b11'1111)); // z
|
||
utf8[3] = (0b1000'0000 | ((codepoint >> 0) & 0b11'1111)); // w
|
||
return 4;
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
DQN_API int Dqn_UTF16_EncodeCodepoint(uint16_t utf16[2], uint32_t codepoint)
|
||
{
|
||
// NOTE: Table from https://www.reedbeta.com/blog/programmers-intro-to-unicode/
|
||
// ----------------------------------------+------------------------------------+------------------+
|
||
// UTF-16 (binary) | Code point (binary) | Range |
|
||
// ----------------------------------------+------------------------------------+------------------+
|
||
// xxxx'xxxx'xxxx'xxxx | xxxx'xxxx'xxxx'xxxx | U+0000–U+FFFF |
|
||
// 1101'10xx'xxxx'xxxx 1101'11yy'yyyy'yyyy | xxxx'xxxx'xxyy'yyyy'yyyy + 0x10000 | U+10000–U+10FFFF |
|
||
// ----------------------------------------+------------------------------------+------------------+
|
||
|
||
if (codepoint <= 0b1111'1111'1111'1111) {
|
||
utf16[0] = DQN_CAST(uint16_t) codepoint;
|
||
return 1;
|
||
}
|
||
|
||
if (codepoint <= 0b1111'1111'1111'1111'1111) {
|
||
uint32_t surrogate_codepoint = codepoint + 0x10000;
|
||
utf16[0] = 0b1101'1000'0000'0000 | ((surrogate_codepoint >> 10) & 0b11'1111'1111); // x
|
||
utf16[1] = 0b1101'1100'0000'0000 | ((surrogate_codepoint >> 0) & 0b11'1111'1111); // y
|
||
return 2;
|
||
}
|
||
|
||
return 0;
|
||
}
|