67 lines
2.2 KiB
Rust
67 lines
2.2 KiB
Rust
use minijinja::{context, Environment};
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use owo_colors::OwoColorize;
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use std::fs;
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fn main() {
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// Protocol tests run on the host without a board feature. Cargo doesn't
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// expose `cfg(test)` to build scripts, so we rely on an env var set by
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// the justfile `test` recipe. See: `just test`
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if std::env::var_os("DONGLORA_HOST_TEST").is_some() {
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return;
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}
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let board_dir = "src/board";
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let boards: Vec<String> = fs::read_dir(board_dir)
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.expect("failed to read src/board directory")
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.filter_map(|e| {
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let p = e.ok()?.path();
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let stem = p.file_stem()?.to_str()?;
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// Exclude non-board files: mod.rs, traits.rs, and platform helpers (esp32s3.rs).
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if p.is_file()
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&& p.extension()? == "rs"
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&& !matches!(stem, "mod" | "traits" | "esp32s3")
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{
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return Some(p.file_stem()?.to_str()?.to_string());
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}
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None
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})
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.collect();
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let enabled: Vec<_> = std::env::vars()
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.filter(|(k, _)| k.starts_with("CARGO_FEATURE_"))
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.map(|(k, _)| k.replace("CARGO_FEATURE_", "").to_lowercase())
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.filter(|f| boards.contains(f))
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.collect();
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match enabled.len() {
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0 => panic!(
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"\n\n{}\n",
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format!("No board selected! Found: {:?}", boards)
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.red()
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.bold()
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),
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1 => println!("cargo:rustc-cfg=board_selected"),
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_ => panic!(
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"\n\n{}\n",
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format!("Conflict: Multiple boards enabled {:?}", enabled)
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.yellow()
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.bold()
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),
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}
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let mut env = Environment::new();
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let template =
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fs::read_to_string("src/board/mod.rs.j2").expect("missing src/board/mod.rs.j2");
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env.add_template("mod", &template)
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.expect("failed to parse board template");
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let rendered = env
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.get_template("mod")
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.expect("template not found")
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.render(context!(boards => boards))
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.expect("failed to render board module");
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fs::write("src/board/mod.rs", rendered).expect("failed to write src/board/mod.rs");
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println!("cargo:rerun-if-changed=src/board/mod.rs.j2");
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println!("cargo:rerun-if-changed={}", board_dir);
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}
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