Replace windows-sys with windows-bindgen

sys-locale only uses 3 definitions from Windows, which makes the windows-sys dependency not worthwhile

.gitignore

@@ -1,2 +1,3 @@
 /target
+/*/target
 Cargo.lock

Cargo.toml

@@ -12,13 +12,6 @@ license = "MIT OR Apache-2.0"
 [target.'cfg(target_os = "android")'.dependencies]
 libc = "0.2"
 
-[target.'cfg(windows)'.dependencies.windows-sys]
-version = "0.48"
-features = [
-    "Win32_Globalization",
-    "Win32_Foundation"
-]
-
 [target.'cfg(all(target_family = "wasm", not(unix)))'.dependencies]
 js-sys = { version = "0.3", optional = true }
 wasm-bindgen = { version = "0.2", optional = true }

gen-windows-bindings/Cargo.toml

@@ -0,0 +1,12 @@
+[package]
+name = "gen-windows-bindings"
+version = "0.1.0"
+edition = "2021"
+publish = false
+
+[dependencies]
+windows-bindgen = "0.51"
+
+# Prevent this from interfering with workspaces
+[workspace]
+members = ["."]

gen-windows-bindings/bindings.config

@@ -0,0 +1,9 @@
+--out ../src/windows_sys.rs
+// We use `std` for now until the versioning of `windows-targets` has had more time to settle.
+// After that, replace it with the `sys` feature instead.
+--config flatten std minimal
+
+--filter
+    Windows.Win32.Foundation.TRUE
+    Windows.Win32.Globalization.GetUserPreferredUILanguages
+    Windows.Win32.Globalization.MUI_LANGUAGE_NAME

gen-windows-bindings/src/main.rs

@@ -0,0 +1,3 @@
+fn main() {
+    windows_bindgen::bindgen(&["--etc", "./bindings.config"]).unwrap();
+}

src/windows.rs

@@ -1,6 +1,8 @@
 use alloc::{string::String, vec::Vec};
-use windows_sys::Win32::Foundation::TRUE;
-use windows_sys::Win32::Globalization::{GetUserPreferredUILanguages, MUI_LANGUAGE_NAME};
+
+#[path = "./windows_sys.rs"]
+mod windows_sys;
+use windows_sys::{GetUserPreferredUILanguages, MUI_LANGUAGE_NAME, TRUE};
 
 #[allow(clippy::as_conversions)]
 pub(crate) fn get() -> impl Iterator<Item = String> {

src/windows_sys.rs

@@ -0,0 +1,22 @@
+// Bindings generated by `windows-bindgen` 0.51.1
+
+#![allow(
+    non_snake_case,
+    non_upper_case_globals,
+    non_camel_case_types,
+    dead_code,
+    clippy::all
+)]
+#[link(name = "kernel32")]
+extern "system" {
+    pub fn GetUserPreferredUILanguages(
+        dwflags: u32,
+        pulnumlanguages: *mut u32,
+        pwszlanguagesbuffer: PWSTR,
+        pcchlanguagesbuffer: *mut u32,
+    ) -> BOOL;
+}
+pub type BOOL = i32;
+pub const MUI_LANGUAGE_NAME: u32 = 8u32;
+pub type PWSTR = *mut u16;
+pub const TRUE: BOOL = 1i32;