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| 1 | +//! Adapted from |
| 2 | +//! https://github.com/rust-lang/rust/blob/master/src/tools/generate-windows-sys/src/main.rs |
| 3 | +
|
| 4 | +use std::{ |
| 5 | + fs, |
| 6 | + io::{BufWriter, Write as _}, |
| 7 | +}; |
| 8 | + |
| 9 | +use regex::Regex; |
| 10 | + |
| 11 | +/// This is printed to the file before the rest of the contents. |
| 12 | +const PRELUDE: &str = r#"// This file is autogenerated. |
| 13 | +// |
| 14 | +// To add bindings, edit windows_sys.lst then run: |
| 15 | +// |
| 16 | +// ``` |
| 17 | +// cd dev-tools/generate-windows-sys/ |
| 18 | +// cargo run |
| 19 | +// ```"#; |
| 20 | + |
| 21 | +const MANIFEST_DIR: &str = env!("CARGO_MANIFEST_DIR"); |
| 22 | + |
| 23 | +pub fn generate_bindings() { |
| 24 | + let filter: String = format!("{MANIFEST_DIR}/windows_sys.list"); |
| 25 | + let temp_file = tempfile::Builder::new() |
| 26 | + .suffix(".rs") |
| 27 | + .tempfile() |
| 28 | + .expect("failed to create temp file"); |
| 29 | + |
| 30 | + // Generate bindings. |
| 31 | + windows_bindgen::bindgen([ |
| 32 | + "--flat", |
| 33 | + "--sys", |
| 34 | + "--no-deps", |
| 35 | + "--out", |
| 36 | + temp_file.path().to_str().unwrap(), |
| 37 | + "--filter", |
| 38 | + "--etc", |
| 39 | + &filter, |
| 40 | + ]) |
| 41 | + .unwrap(); |
| 42 | + |
| 43 | + let bindings = |
| 44 | + fs::read_to_string(temp_file.path()).expect("failed to read temp windows_sys.rs"); |
| 45 | + |
| 46 | + let mut f: BufWriter<fs::File> = fs::File::create(format!( |
| 47 | + "{MANIFEST_DIR}/../../find-msvc-tools/src/windows_sys.rs" |
| 48 | + )) |
| 49 | + .map(BufWriter::new) |
| 50 | + .expect("failed to create windows_sys.rs"); |
| 51 | + |
| 52 | + write!(&mut f, "{PRELUDE}\n{bindings}\n").unwrap(); |
| 53 | + |
| 54 | + let mut dll_names: Vec<&str> = Regex::new(r#"link!\("(.*)\.dll""#) |
| 55 | + .unwrap() |
| 56 | + .captures_iter(&bindings) |
| 57 | + .map(|caps| caps.extract().1) |
| 58 | + .map(|[dll_name]| dll_name) |
| 59 | + .filter(|dll_name| *dll_name != "kernel32") |
| 60 | + .collect(); |
| 61 | + |
| 62 | + if !dll_names.is_empty() { |
| 63 | + dll_names.sort_unstable(); |
| 64 | + dll_names.dedup(); |
| 65 | + |
| 66 | + for dll_name in dll_names { |
| 67 | + write!(&mut f, r#"#[link(name = "{dll_name}")]"#).unwrap(); |
| 68 | + f.write_all("\n".as_bytes()).unwrap(); |
| 69 | + } |
| 70 | + |
| 71 | + f.write_all(r#"extern "C" {}"#.as_bytes()).unwrap(); |
| 72 | + f.write_all("\n".as_bytes()).unwrap(); |
| 73 | + } |
| 74 | + |
| 75 | + f.write_all(r#"use super::windows_link;"#.as_bytes()) |
| 76 | + .unwrap(); |
| 77 | + f.write_all("\n".as_bytes()).unwrap(); |
| 78 | + |
| 79 | + f.into_inner().unwrap().sync_all().unwrap(); |
| 80 | +} |
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