Remove strings dependency from core:sys/windows

core/sys/windows/comdlg32.odin

@@ -2,7 +2,6 @@
 package sys_windows
 
 foreign import "system:Comdlg32.lib"
-import "core:strings"
 
 LPOFNHOOKPROC :: #type proc "stdcall" (hdlg: HWND, msg: u32, wparam: WPARAM, lparam: LPARAM) -> UINT_PTR
 
@@ -49,6 +48,9 @@ SAVE_TITLE :: "Select file to save"
 SAVE_FLAGS :: u32(OFN_OVERWRITEPROMPT | OFN_EXPLORER)
 SAVE_EXT   :: "txt"
 
+/*
+import "core:strings"
+
 Open_Save_Mode :: enum {
 	Open = 0,
 	Save = 1,
@@ -121,6 +123,7 @@ select_file_to_save :: proc(title := SAVE_TITLE, dir := ".",
 	path, ok = _open_file_dialog(title, dir, filters, default_filter, flags, default_ext, Open_Save_Mode.Save, allocator)
 	return
 }
+*/
 
 // TODO: Implement convenience function for select_file_to_open with ALLOW_MULTI_SELECT that takes
 //       it output of the form "path\u0000\file1u\0000file2" and turns it into []string with the path + file pre-concatenated for you.

core/sys/windows/util.odin

@@ -1,7 +1,6 @@
 // +build windows
 package sys_windows
 
-import "core:strings"
 import "core:runtime"
 import "core:intrinsics"
 
@@ -100,6 +99,20 @@ utf16_to_utf8 :: proc(s: []u16, allocator := context.temp_allocator) -> (res: st
 // AdvAPI32, NetAPI32 and UserENV helpers.
 
 allowed_username :: proc(username: string) -> bool {
+	contains_any :: proc(s, chars: string) -> bool {
+		if chars == "" {
+			return false
+		}
+		for c in transmute([]byte)s {
+			for b in transmute([]byte)chars {
+				if c == b {
+					return true
+				}
+			}
+		}
+		return false
+	}
+
 /*
 	User account names are limited to 20 characters and group names are limited to 256 characters.
 	In addition, account names cannot be terminated by a period and they cannot include commas or any of the following printable characters:
@@ -120,7 +133,7 @@ allowed_username :: proc(username: string) -> bool {
 			return false
 		}
 	}
-	if strings.contains_any(username, _DISALLOWED) {
+	if contains_any(username, _DISALLOWED) {
 		return false
 	}