// include the latest version of the regex crate in your Cargo.toml
extern crate regex;
use regex::Regex;
fn main() {
let regex = Regex::new(r"(?m)^\d+\s+(?<code>(20[012])).*(action:(?<!read))?").unwrap();
let string = "1 200 file:test01.txt, action:read, User:dummy
2 201 file:test01.txt, action:write, User:dummy
3 202 file:unknown, keepalive , User:dummy
4 450 file:test01.txt, action:read, User:dummy
5 500 file:test01.txt, action:read, User:dummy
6 201 profiles, action:reload, User:dummy";
// result will be an iterator over tuples containing the start and end indices for each match in the string
let result = regex.captures_iter(string);
for mat in result {
println!("{:?}", mat);
}
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Rust, please visit: https://docs.rs/regex/latest/regex/