293 lines
8.7 KiB
C
293 lines
8.7 KiB
C
// NOTE: Implementation
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// ============================================================================
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bool HAV_Str8_Equals(HAV_Str8 lhs, HAV_Str8 rhs)
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{
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bool result = lhs.size == rhs.size && memcmp(lhs.data, rhs.data, lhs.size) == 0;
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return result;
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}
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HAV_Str8ToU64Result HAV_Str8_ToU64(HAV_Str8 string)
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{
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HAV_Str8ToU64Result result = {0};
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size_t ch_index = 0;
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while (ch_index < string.size && HAV_CharIsWhiteSpace(string.data[ch_index]))
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ch_index++;
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for (; ch_index < string.size; ch_index++) {
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char ch = string.data[ch_index];
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if (ch >= '0' && ch <= '9') {
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result.value = (result.value * 10) + (ch - '0');
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} else {
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return result;
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}
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}
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result.success = true;
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return result;
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}
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HAV_Str8BinarySplitResult HAV_Str8_BinarySplit(HAV_Str8 buffer, HAV_Str8 find)
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{
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HAV_Str8BinarySplitResult result = {0};
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result.lhs = buffer;
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for (size_t index = 0; (index + find.size) <= buffer.size; index++) {
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HAV_Str8 check = {buffer.data + index, find.size};
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if (HAV_Str8_Equals(find, check)) {
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result.lhs.size = index;
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result.rhs.data = check.data + find.size;
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result.rhs.size = buffer.size - (index + find.size);
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break;
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}
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}
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return result;
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}
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bool HAV_CharIsWhiteSpace(char ch)
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{
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bool result = ch == ' ' || ch == '\n' || ch == '\r' || ch == '\t';
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return result;
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}
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bool HAV_CharIsDigit(char ch)
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{
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bool result = ch >= '0' && ch <= '9';
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return result;
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}
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#pragma warning(push)
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#pragma warning(disable: 4146) // warning C4146: unary minus operator applied to unsigned type, result still unsigned
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uint32_t HAV_PCG32_Pie (uint64_t *state)
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{
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uint64_t old = *state ^ 0xc90fdaa2adf85459ULL;
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*state = *state * 6364136223846793005ULL + 0xc90fdaa2adf85459ULL;
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uint32_t xorshifted = (uint32_t)(((old >> 18u) ^ old) >> 27u);
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uint32_t rot = old >> 59u;
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return (xorshifted >> rot) | (xorshifted << ((-rot) & 31));
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}
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#pragma warning(pop)
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f64 HAV_PCG32_PieF64(uint64_t *state, f64 min, f64 max)
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{
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uint32_t u32_value = HAV_PCG32_Pie(state);
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f64 t01 = HAV_CAST(f64)u32_value / HAV_CAST(f64)HAV_CAST(uint32_t)-1;
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f64 result = min + (max - min) * t01;
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return result;
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}
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bool HAV_BufferIsValid(HAV_Buffer buffer)
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{
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bool result = buffer.data && buffer.size;
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return result;
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}
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HAV_BufferIterator HAV_BufferIteratorInit(HAV_Buffer buffer)
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{
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HAV_BufferIterator result = {0};
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result.buffer = buffer;
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return result;
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}
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bool HAV_BufferIteratorHasMoreBytes(HAV_BufferIterator it)
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{
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bool result = HAV_BufferIsValid(it.buffer) && it.index < it.buffer.size;
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return result;
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}
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uint8_t HAV_BufferIteratorPeekByte(HAV_BufferIterator *it)
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{
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HAV_ASSERT(it);
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HAV_ASSERT(HAV_BufferIsValid(it->buffer));
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HAV_ASSERT(it->index < it->buffer.size);
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uint8_t result = it->buffer.data[it->index];
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return result;
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}
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uint8_t HAV_BufferIteratorNextByte(HAV_BufferIterator *it)
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{
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uint8_t result = HAV_BufferIteratorPeekByte(it);
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it->index++;
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return result;
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}
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HAV_Buffer HAV_FileRead(char const *file_path)
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{
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HAV_Buffer result = {0};
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// NOTE: Determine file size
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// =========================================================================
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WIN32_FILE_ATTRIBUTE_DATA file_attrib_data = {0};
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if (GetFileAttributesEx(file_path, GetFileExInfoStandard, &file_attrib_data) == 0)
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return result;
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// NOTE: Open file
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// =========================================================================
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HANDLE file_handle = CreateFile(
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/*LPCSTR lpFileName*/ file_path,
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/*DWORD dwDesiredAccess*/ GENERIC_READ,
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/*DWORD dwShareMode*/ 0,
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/*LPSECURITY_ATTRIBUTES lpSecurityAttributes*/ NULL,
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/*DWORD dwCreationDisposition*/ OPEN_EXISTING,
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/*DWORD dwFlagsAndAttributes*/ 0,
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/*HANDLE hTemplateFile*/ NULL
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);
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if (file_handle == INVALID_HANDLE_VALUE)
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return result;
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// NOTE: Allocate buffer
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// =========================================================================
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uint64_t file_size = (uint64_t)file_attrib_data.nFileSizeHigh << 32 | (uint64_t)file_attrib_data.nFileSizeLow << 0;
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HAV_ASSERT(file_size < (DWORD)-1);
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char *buffer = VirtualAlloc(
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/*LPVOID lpAddress*/ NULL,
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/*SIZE_T dwSize*/ file_size,
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/*DWORD flAllocationType*/ MEM_COMMIT | MEM_RESERVE,
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/*DWORD flProtect*/ PAGE_READWRITE
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);
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if (!buffer)
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goto end;
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// NOTE: Read file to buffer
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// =========================================================================
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DWORD bytes_read = 0;
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BOOL read_file_result = ReadFile(
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/*HANDLE hFile*/ file_handle,
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/*LPVOID lpBuffer*/ buffer,
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/*DWORD nNumberOfBytesToRead*/ HAV_CAST(DWORD)file_size,
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/*LPDWORD lpNumberOfBytesRead*/ &bytes_read,
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/*LPOVERLAPPED lpOverlapped*/ NULL
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);
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// NOTE: Handle read result
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// =========================================================================
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if (read_file_result == 0) {
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VirtualFree(buffer, 0, MEM_RELEASE);
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} else {
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result.data = buffer;
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result.size = file_size;
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}
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end:
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CloseHandle(file_handle);
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return result;
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};
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void HAV_FileFree(HAV_Buffer buffer)
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{
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if (HAV_BufferIsValid(buffer))
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VirtualFree(buffer.data, 0, MEM_RELEASE);
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}
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bool HAV_FileWrite(char const *file_path, void const *buffer, size_t buffer_size)
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{
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bool result = false;
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// NOTE: Open file
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// =========================================================================
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HANDLE file_handle = CreateFile(
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/*LPCSTR lpFileName*/ file_path,
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/*DWORD dwDesiredAccess*/ GENERIC_WRITE,
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/*DWORD dwShareMode*/ 0,
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/*LPSECURITY_ATTRIBUTES lpSecurityAttributes*/ NULL,
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/*DWORD dwCreationDisposition*/ CREATE_ALWAYS,
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/*DWORD dwFlagsAndAttributes*/ 0,
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/*HANDLE hTemplateFile*/ NULL
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);
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if (file_handle == INVALID_HANDLE_VALUE)
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return result;
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// NOTE: Write file to disk
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// =========================================================================
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DWORD bytes_written = 0;
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BOOL write_file_result = WriteFile(
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/*HANDLE hFile*/ file_handle,
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/*LPVOID lpBuffer*/ buffer,
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/*DWORD nNumberOfBytesToWrite*/ HAV_CAST(DWORD)buffer_size,
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/*LPDWORD lpNumberOfBytesWrite*/ &bytes_written,
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/*LPOVERLAPPED lpOverlapped*/ NULL
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);
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HAV_ASSERT(bytes_written == buffer_size);
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result = write_file_result && bytes_written == buffer_size;
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CloseHandle(file_handle);
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return result;
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};
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void HAV_PrintHandle(void *handle, HAV_Str8 string)
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{
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DWORD bytes_written = 0;
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WriteFile(handle, string.data, HAV_CAST(DWORD)string.size, &bytes_written, NULL);
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(void)bytes_written;
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}
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void HAV_Print(HAV_Str8 string)
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{
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if (pap_globals.stdout_handle == NULL) {
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pap_globals.stdout_handle = GetStdHandle(STD_OUTPUT_HANDLE);
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DWORD mode = 0;
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BOOL get_console_mode_result = GetConsoleMode(
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/*HANDLE hConsoleHandle*/ pap_globals.stdout_handle,
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/*LPDWORD lpMode*/ &mode
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);
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pap_globals.write_to_console = get_console_mode_result != 0;
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}
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HAV_ASSERT(string.size < HAV_CAST(DWORD)-1);
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if (pap_globals.write_to_console) {
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DWORD chars_written = 0;
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WriteConsoleA(pap_globals.stdout_handle, string.data, (DWORD)string.size, &chars_written, NULL);
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} else {
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HAV_PrintHandle(pap_globals.stdout_handle, string);
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}
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}
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void HAV_PrintFmt(char const *fmt, ...)
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{
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va_list args, args_copy;
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va_start(args, fmt);
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va_copy(args_copy, args);
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int string_size = vsnprintf(NULL, 0, fmt, args_copy);
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va_end(args_copy);
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char buffer[8192];
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HAV_ASSERT(string_size >= 0 && string_size < HAV_ARRAY_UCOUNT(buffer));
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if (string_size) {
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vsnprintf(buffer, sizeof(buffer), fmt, args);
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HAV_Str8 string = {.data = buffer, .size = string_size};
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HAV_Print(string);
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}
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va_end(args);
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}
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void HAV_PrintLn(HAV_Str8 string)
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{
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HAV_Print(string);
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HAV_Print(HAV_STR8("\n"));
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}
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void HAV_PrintLnFmt(char const *fmt, ...)
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{
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va_list args, args_copy;
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va_start(args, fmt);
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va_copy(args_copy, args);
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int string_size = vsnprintf(NULL, 0, fmt, args_copy);
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va_end(args_copy);
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char buffer[8192];
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HAV_ASSERT(string_size >= 0 && string_size < HAV_ARRAY_UCOUNT(buffer));
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if (string_size) {
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vsnprintf(buffer, sizeof(buffer), fmt, args);
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HAV_Str8 string = {.data = buffer, .size = string_size};
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HAV_PrintLn(string);
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}
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va_end(args);
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}
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