odin-lang.Odin/core/os/os2/temp_file_windows.odin

//+private
package os2

import "base:runtime"
import win32 "core:sys/windows"

_temp_dir :: proc(allocator: runtime.Allocator) -> (string, runtime.Allocator_Error) {
	n := win32.GetTempPathW(0, nil)
	if n == 0 {
		return "", nil
	}
	TEMP_ALLOCATOR_GUARD()

	b := make([]u16, max(win32.MAX_PATH, n), temp_allocator())
	n = win32.GetTempPathW(u32(len(b)), raw_data(b))

	if n == 3 && b[1] == ':' && b[2] == '\\' {

	} else if n > 0 && b[n-1] == '\\' {
		n -= 1
	}
	return win32_utf16_to_utf8(b[:n], allocator)
}