Implement functions to get stdin, stdout & stderr

src/os/file/file.h

@@ -12,9 +12,6 @@ BEGIN_C_LINKAGE
 #endif // !WAPP_PLATFORM_CPP
 
 typedef struct WFile WFile;
-wapp_extern WFile *WF_STDIN;
-wapp_extern WFile *WF_STDOUT;
-wapp_extern WFile *WF_STDERR;
 
 typedef enum {
 	WAPP_ACCESS_READ,                       // Equivalent to r
@@ -37,6 +34,9 @@ typedef enum {
 	FILE_SEEK_ORIGIN_COUNT,
 } FileSeekOrigin;
 
+wapp_extern WFile *wapp_file_stdin(void);
+wapp_extern WFile *wapp_file_stdout(void);
+wapp_extern WFile *wapp_file_stderr(void);
 WFile *wapp_file_open(const Allocator *allocator, Str8RO *filepath, FileAccessMode mode);
 i64    wapp_file_get_current_position(WFile *file);
 i64    wapp_file_seek(WFile *file, i64 offset, FileSeekOrigin origin);

src/os/file/posix/file_posix.c

@@ -49,13 +49,20 @@ wapp_intern i32 file_seek_origins[FILE_SEEK_ORIGIN_COUNT] = {
 	[WAPP_SEEK_END]     = SEEK_END,
 };
 
-wapp_intern WFile _STDIN  = { .fd = STDIN_FILENO };
-wapp_intern WFile _STDOUT = { .fd = STDOUT_FILENO };
-wapp_intern WFile _STDERR = { .fd = STDERR_FILENO };
+WFile *wapp_file_stdin(void) {
+	wapp_persist WFile _stdin  = { .fd = STDIN_FILENO };
+	return &_stdin;
+}
 
-WFile *WF_STDIN  = &_STDIN;
-WFile *WF_STDOUT = &_STDOUT;
-WFile *WF_STDERR = &_STDERR;
+WFile *wapp_file_stdout(void) {
+	wapp_persist WFile _stdout = { .fd = STDOUT_FILENO };
+	return &_stdout;
+}
+
+WFile *wapp_file_stderr(void) {
+	wapp_persist WFile _stderr = { .fd = STDERR_FILENO };
+	return &_stderr;
+}
 
 WFile *_file_open(const Allocator *allocator, Str8RO *filepath, FileAccessMode mode) {
 	wapp_persist c8 tmp[WAPP_PATH_MAX] = {0};

src/os/file/win/file_win.c

@@ -54,6 +54,24 @@ wapp_intern DWORD file_seek_origins[FILE_SEEK_ORIGIN_COUNT] = {
 	[WAPP_SEEK_END]     = FILE_END,
 };
 
+WFile *wapp_file_stdin(void) {
+	wapp_persist WFile _stdin  = { .fh = INVALID_HANDLE_VALUE };
+	_stdin.fh = GetStdHandle(STD_INPUT_HANDLE);
+	return &_stdin;
+}
+
+WFile *wapp_file_stdout(void) {
+	wapp_persist WFile _stdout = { .fh = INVALID_HANDLE_VALUE };
+	_stdout.fh = GetStdHandle(STD_OUTPUT_HANDLE);
+	return &_stdout;
+}
+
+WFile *wapp_file_stderr(void) {
+	wapp_persist WFile _stderr = { .fh = INVALID_HANDLE_VALUE };
+	_stderr.fh = GetStdHandle(STD_ERROR_HANDLE);
+	return &_stderr;
+}
+
 WFile *_file_open(const Allocator *allocator, Str8RO *filepath, FileAccessMode mode) {
 	wapp_persist c8 tmp[WAPP_PATH_MAX] = {0};
 	memset(tmp, 0, WAPP_PATH_MAX);