forked from mirrors/gecko-dev
58 lines
2.2 KiB
Rust
58 lines
2.2 KiB
Rust
use std::fmt::Write;
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use std::{fs, path::PathBuf};
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fn main() {
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println!("cargo:rerun-if-changed=README.md");
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let readme = fs::read_to_string("README.md").unwrap();
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let output = PathBuf::from(std::env::var("OUT_DIR").unwrap()).join("README-lib.md");
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let contents = prepare(&readme).unwrap();
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fs::write(output, contents).unwrap();
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}
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fn prepare(readme: &str) -> Result<String, Box<dyn std::error::Error>> {
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// This is a naive implementation to get things off the ground.
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// We just do a few things for this at the moment:
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// 1. Strip header stuff
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// 2. Replace the build document link
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// 3. Replace serde examples with ignore flags (to avoid feature flagging configuration in docs)
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let mut cleaned = String::new();
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let mut body = false;
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let mut feature_section = false;
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let mut feature = String::new();
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for line in readme.lines() {
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if !body {
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if line.starts_with("[docs]") {
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body = true;
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}
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continue;
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}
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// Add the line as is, unless it contains "(BUILD.md)"
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if line.contains("(BUILD.md)") {
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write!(
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cleaned,
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"{}",
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&line.replace(
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"(BUILD.md)",
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"(https://github.com/paupino/rust-decimal/blob/master/BUILD.md)",
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)
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)?;
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} else if feature_section && line.starts_with("```rust") {
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// This is a bit naive, but it's to make the Serde examples cleaner. Should probably
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// be a bit more "defensive" here.
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writeln!(cleaned, "```rust")?;
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writeln!(cleaned, "# use rust_decimal::Decimal;")?;
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writeln!(cleaned, "# use serde::{{Serialize, Deserialize}};")?;
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write!(cleaned, "# #[cfg(features = \"{}\")]", feature)?;
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} else {
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if !feature_section && line.starts_with("## Features") {
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feature_section = true;
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} else if feature_section && line.starts_with("### ") {
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feature = line.replace("### ", "").replace('`', "");
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}
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write!(cleaned, "{}", line)?;
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}
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writeln!(cleaned)?;
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}
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Ok(cleaned)
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}
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