use std::fs;
fn main() {
// Skip README generation on docs.rs
if std::env::var("DOCS_RS").as_deref() == Ok("1") {
return;
}
/*
Compose README.md from docs/links.md, docs/main.md and (if available) end.md
All {{VERSION}} placeholders in links.md are replaced by the actual version read from Cargo.toml.
*/
let mut readme = fs::read_to_string("docs/links.md")
.expect("Failed to read links.md")
.replace(
"{{VERSION}}",
&std::env::var("CARGO_PKG_VERSION")
.expect("version is available when running build.rs"),
);
readme.push_str(&fs::read_to_string("docs/main.md").expect("Failed to read main.md"));
if let Ok(end) = fs::read_to_string("docs/end.md") {
readme.push_str(&end);
}
let _ = fs::write("README.md", readme);
}