Switch to windows-bindgen

Author: djc

Cargo.toml

@@ -31,6 +31,10 @@ windows = { version = "^0.52", features = ["Win32_Foundation", "Win32_System_Sys
 [dev-dependencies]
 version-sync = "0.9"
 
+[target.'cfg(target_os = "windows")'.dev-dependencies]
+windows-bindgen = { version = "0.61" }
+similar-asserts = { version = "1.6.1" }
+
 [package.metadata.docs.rs]
 features = ["set"]
 rustdoc-args = ["--cfg", "docsrs"]

src/windows/bindings.rs

@@ -0,0 +1,33 @@
+#![cfg(windows)]
+
+use std::fs;
+use windows_bindgen::bindgen;
+
+#[test]
+fn gen_bindings() {
+    let output = "src/windows/bindings.rs";
+    let existing = fs::read_to_string(output).unwrap();
+
+    bindgen(["--no-deps", "--etc", ARGS]);
+
+    // Check the output is the same as before.
+    // Depending on the git configuration the file may have been checked out with `\r\n` newlines or
+    // with `\n`. Compare line-by-line to ignore this difference.
+    let mut new = fs::read_to_string(output).unwrap();
+    if existing.contains("\r\n") && !new.contains("\r\n") {
+        new = new.replace("\n", "\r\n");
+    } else if !existing.contains("\r\n") && new.contains("\r\n") {
+        new = new.replace("\r\n", "\n");
+    }
+
+    similar_asserts::assert_eq!(existing, new);
+    if !new.lines().eq(existing.lines()) {
+        panic!("generated file `{}` is changed.", output);
+    }
+}
+
+const ARGS: &str = r#"--out src/windows/bindings.rs
+--flat --sys --no-comment
+--filter
+    ComputerNamePhysicalDnsHostname
+    GetComputerNameExW"#;