62 lines
No EOL
1.7 KiB
Rust
62 lines
No EOL
1.7 KiB
Rust
use std::{
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fs,
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io::{self, BufRead},
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path::Path,
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};
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const CODEGEN_OUT_DIR: &str = "generated/";
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pub fn main() {
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let _ = fs::create_dir(CODEGEN_OUT_DIR);
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let proto_file = "proto/internal.proto";
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if Path::new(&proto_file).exists() {
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println!("cargo:rerun-if-changed={proto_file}");
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prost_build::Config::new()
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.out_dir(CODEGEN_OUT_DIR)
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.type_attribute(".", "#[derive(wicked_waifus_protocol_derive::MessageID)]")
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.compile_protos(&[proto_file], &["internal"])
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.unwrap();
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impl_message_id(Path::new("generated/internal.rs")).unwrap();
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}
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let proto_file = "proto/data.proto";
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if Path::new(&proto_file).exists() {
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println!("cargo:rerun-if-changed={proto_file}");
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prost_build::Config::new()
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.out_dir(CODEGEN_OUT_DIR)
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.compile_protos(&[proto_file], &["data"])
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.unwrap();
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}
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}
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pub fn impl_message_id(path: &Path) -> io::Result<()> {
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let file = fs::File::open(path)?;
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let reader = io::BufReader::new(file);
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let mut output = Vec::new();
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let mut attr = None;
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for line in reader.lines() {
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let line = line?;
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if line.contains("MessageId:") {
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attr = Some(make_message_id_attr(&line).unwrap());
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} else {
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output.push(line);
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if let Some(attr) = attr.take() {
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output.push(attr);
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}
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}
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}
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fs::write(path, output.join("\n").as_bytes())?;
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Ok(())
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}
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fn make_message_id_attr(line: &str) -> Option<String> {
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let id = line.trim_start().split(' ').nth(2)?.parse::<u16>().ok()?;
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Some(format!("#[message_id({id})]"))
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} |