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internal void
#if COMPILER_GCC || COMPILER_CLANG
win32_logf(const char *fmt, ...) PRINTF_FORMAT
#elif COMPILER_MSVC
win32_logf(_Printf_format_string_ const char *fmt, ...)
#endif
{
char buffer[4096];
va_list args;
va_start(args, fmt);
int len = vsnprintf(buffer, sizeof(buffer), fmt, args);
va_end(args);
if (len < 0)
return;
if ((u64)len >= sizeof(buffer))
len = sizeof(buffer) - 1;
HANDLE handle_stdout = GetStdHandle(STD_OUTPUT_HANDLE);
DWORD written = 0;
WriteConsoleA(handle_stdout, buffer, (DWORD)len, &written, NULL);
}
internal void win32_log(String8List messages)
{
HANDLE handle_stdout = GetStdHandle(STD_OUTPUT_HANDLE);
u64 count = 0;
for (String8Node *node = messages.first; count < messages.count; node = node->next) {
DWORD written = 0;
WriteConsoleA(handle_stdout, node->value.data, (DWORD)(node->value.size), &written, NULL);
++count;
}
}
// exit win32
// returns a boolean. i don't know what to do with the boolean if it fails hahahahhaa
// not like you can exit hahahahaha0
internal b32 win32_os_exit()
{
ExitProcess(0);
return true;
}
// TODO: remove FORMAT_MESSAGE_ALLOCATE_BUFFER flag
internal void win32_handle_error(MemArena *arena, DWORD error)
{
ScratchArena scratch = scratch_start(arena);
String8 error_buffer = PushString8(arena, 255);
DWORD error_result = GetLastError();
DWORD p_buffer = FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM,
NULL, error_result, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
(LPTSTR)&error_buffer.data, 255, NULL);
Log("Error code: %lu\n", error_result);
Log("Error formatted message: %.*s\n", Str8Arg(error_buffer));
scratch_end(&scratch);
}
internal u64 safe_truncate_64(u64 value)
{
Assert(value <= (u64)~0);
return (u64)value;
}
internal b32 win32_file_exists(u8 *path)
{
DWORD attributes = GetFileAttributesA((LPCSTR)path);
return ((attributes != INVALID_FILE_ATTRIBUTES) && !(attributes & FILE_ATTRIBUTE_DIRECTORY));
}
internal b32 win32_file_write(String8 data, String8 path)
{
b32 result = false;
HANDLE file_handle = CreateFileA((LPCSTR)path.data, GENERIC_WRITE, 0, 0, CREATE_ALWAYS, 0, 0);
if (file_handle != INVALID_HANDLE_VALUE) {
DWORD bytes_written;
if (WriteFile(file_handle, data.data, (DWORD)data.size, &bytes_written, 0)) {
result = (bytes_written == data.size);
} else {
Log("Writing the file was unsuccessful");
}
CloseHandle(file_handle);
} else {
Log("File handle has the INVALID_HANDLE_VALUE flag.");
}
return result;
}
internal String8 win32_file_load(MemArena *arena, String8 file)
{
String8 result = {0};
HANDLE file_handle =
CreateFileA((LPCSTR)file.data, GENERIC_READ, FILE_SHARE_READ, 0, OPEN_EXISTING, 0, 0);
if (file_handle == INVALID_HANDLE_VALUE) {
Log("Failed to open file\n");
return result;
}
LARGE_INTEGER size;
DWORD get_file_size_result = GetFileSizeEx(file_handle, &size);
if (!get_file_size_result) {
Log("Failed to get file size");
win32_handle_error(arena, get_file_size_result);
CloseHandle(file_handle);
return result;
}
ScratchArena file_load_scratch = scratch_start(arena);
u32 file_size32 = (u32)safe_truncate_64(size.QuadPart);
result = PushString8(arena, file_size32);
// return value in case of success should be true
DWORD bytes_read = 0;
;
DWORD read_file_result = ReadFile(file_handle, (LPSTR)result.data, file_size32, &bytes_read, 0);
if (!read_file_result || (file_size32 != bytes_read)) {
Log("Failed to read file\n");
win32_handle_error(arena, read_file_result);
CloseHandle(file_handle);
return result;
}
result.size = file_size32;
// TODO: find out if we want to free this or not.
CloseHandle(file_handle);
return result;
}
internal void *win32_load_library()
{
// TODO: ...
}
internal void win32_library_get_proc()
{
// TODO: ...
}
internal LRESULT CALLBACK win32_window_proc(HWND handle, UINT messages, WPARAM wparam,
LPARAM lparam)
{
switch (messages) {
case WM_DESTROY:
Win32Running = false;
break;
case WM_PAINT: {
} break;
case WM_SYSKEYDOWN:
case WM_SYSKEYUP:
case WM_KEYDOWN:
case WM_KEYUP: {
// TODO: ...
} break;
}
return DefWindowProcA(handle, messages, wparam, lparam);
}
internal HWND win32_create_window(HINSTANCE instance, int height, int width, int display_x,
int display_y, const char *window_name)
{
Win32Running = true;
WNDCLASS window_class = {0};
// TODO(nasr): check if CS_OWNDC CS_HREDRAW CS_VEREDRAW still matter
window_class.style = CS_OWNDC | CS_HREDRAW | CS_VREDRAW;
window_class.lpfnWndProc = win32_window_proc;
window_class.hInstance = instance;
window_class.lpszClassName = window_name;
HWND window_handle = {};
if (RegisterClass(&window_class)) {
window_handle = CreateWindowEx(0, window_class.lpszClassName, window_name,
WS_OVERLAPPEDWINDOW | WS_VISIBLE, height, width, display_x,
display_y, 0, 0, instance, 0);
}
Assert(window_handle);
ShowWindow(window_handle, true);
MSG message = {};
while (Win32Running) {
Log("status : %d", Win32Running);
b32 result = GetMessage(&message, 0, 0, 0);
if (result > 0) {
TranslateMessage(&message);
DispatchMessage(&message);
} else {
break;
}
} // cleanup get's handled by the OS, so there is no need worry about that
return window_handle;
}
internal String8List win32_open_dir(MemArena *arena, String8 *original_path) {}
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