vendor/regex/examples/shootout-regex-dna-replace.rs

   1 extern crate regex;
   2
   3 use std::io::{self, Read};
   4
   5 macro_rules! regex {
   6     ($re:expr) => {{
   7         use regex::internal::ExecBuilder;
   8         ExecBuilder::new($re).build().unwrap().into_regex()
   9     }};
  10 }
  11
  12 fn main() {
  13     let mut seq = String::with_capacity(50 * (1 << 20));
  14     io::stdin().read_to_string(&mut seq).unwrap();
  15     let ilen = seq.len();
  16
  17     seq = regex!(">[^\n]*\n|\n").replace_all(&seq, "").into_owned();
  18     println!("original: {}, replaced: {}", ilen, seq.len());
  19 }