// 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"(?<=begin{DoxyCode})([\s\S]+?[^\\])([_%])([\s\S]+?)(?=end{DoxyCode})").unwrap();
let string = "\\begin{DoxyCode}
17 This is some code that contains an_undersc_ore and
18 an escaped\\_underscore. Plus another unescaped_unders_core
19 for good measure.
20 As if that was not \"bad\" enough, it also contains a %percent sign
21 that is unescaped.
\\end{DoxyCode}
Here is some other stuff that may contain \\index{things_not_to_be_escaped}.
\\begin{DoxyCode}
17 This is some code that contains an_underscore and
18 an escaped\\_underscore. Plus another unescaped_underscore
19 for good measure.
20 As if that was not \"bad\" enough, it also contains a \\%percent sign
21 that is escaped.
\\end{DoxyCode}";
// 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/