Mercurial > repos > pointsource_algs / file comparison
comparison: build.rs
build.rs
- changeset 6
- bcb508479948
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| 5:df971c81282e | 6:bcb508479948 |
|---|---|
| 1 use std::env; | |
| 2 use regex::{Regex, Captures}; | |
| 3 | |
| 4 fn proc<A : AsRef<str>>(re : &str, str : A) -> String { | |
| 5 let need_to_escape = Regex::new(r"([_*\\])").unwrap(); | |
| 6 Regex::new(re).unwrap().replace_all(str.as_ref(), |caps : &Captures| { | |
| 7 format!("{}{}{}", | |
| 8 caps.get(1).unwrap().as_str(), | |
| 9 need_to_escape.replace_all(caps.get(2).unwrap().as_str(), "\\$1"), | |
| 10 caps.get(3).unwrap().as_str() | |
| 11 ) | |
| 12 }).to_string() | |
| 13 } | |
| 14 | |
| 15 fn main() { | |
| 16 let out_dir = env::var("OUT_DIR").unwrap(); | |
| 17 | |
| 18 // Since rust is stuck in 80's 7-bit gringo ASCII world, so that rustdoc does not support | |
| 19 // markdown KaTeX mathematics, we have to process the README to include horrible horrible | |
| 20 // horrible escapes for the math, and then use an vomit-inducingly ugly javasccript | |
| 21 // workaround to process the math on the fly. | |
| 22 | |
| 23 println!("cargo:rerun-if-changed=README.md"); | |
| 24 | |
| 25 let readme = std::fs::read_to_string("README.md") | |
| 26 .expect("Error reading README"); | |
| 27 | |
| 28 // Escape _, *, and \ in equations. | |
| 29 let readme_uglified = proc(r"(?m)([^$]\$)([^$]+)(\$[^$])", | |
| 30 proc(r"([^$]\$\$)([^$]+)(\$\$[^$])", readme)); | |
| 31 // Remove the instructions for building the documentation | |
| 32 let readme_cut = Regex::new("## Internals(.*|\n)*") | |
| 33 .unwrap() | |
| 34 .replace_all(&readme_uglified, ""); | |
| 35 | |
| 36 std::fs::write(out_dir + "/README_uglified.md", readme_cut.as_bytes()) | |
| 37 .expect("Error saving uglified README"); | |
| 38 } |
