50 lines
1.7 KiB
Rust
50 lines
1.7 KiB
Rust
// This script reads README-template.md and generates the playground links
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// from the Rust source files in the various directories.
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// To add a new exercise, add it to the appropriate place in README-template.md
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// and then make sure to recompile this script (because the template gets
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// included at compile time and then run it to generate a new version of
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// README.md.
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extern crate handlebars;
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extern crate prlink;
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#[macro_use]
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extern crate serde_json;
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use handlebars::{Handlebars, Helper, RenderContext, RenderError};
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use std::fs::File;
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use std::io::prelude::*;
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use std::path::PathBuf;
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fn main() {
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let mut template_file = File::open("README-template.hbs").unwrap();
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let mut template = String::new();
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template_file.read_to_string(&mut template).unwrap();
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let autogenerated_notice = "This file was autogenerated by the script in src/bin/generate_readme.rs.
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Please edit either the script or the template in README-template.md in
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order to make changes here rather than committing the changes directly.";
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let mut generated_readme = File::create("README.md").unwrap();
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let mut hbs = Handlebars::new();
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hbs.register_helper("playground_link", Box::new(playground_link_helper));
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write!(
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generated_readme,
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"{}",
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hbs.render_template(
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&template,
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&json!({ "autogenerated_notice": autogenerated_notice }),
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).unwrap()
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).unwrap();
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}
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fn playground_link_helper(h: &Helper, _: &Handlebars, rc: &mut RenderContext) -> Result<(), RenderError> {
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let filename = PathBuf::from(h.param(0).unwrap().value().as_str().unwrap());
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let link = prlink::linkify_file(&filename);
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rc.writer.write(link.into_bytes().as_ref())?;
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Ok(())
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}
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