// 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)<img[^>]+data-src=("[^"]+")[^>]*>"#).unwrap();
let string = "<img src=\"old.jpg\" data-src=\"new.jpg\">
<img data-src=\"new2.jpg\" src=\"old2.jpg\">";
let substitution = "<img src=$1 data-src=$1>";
// result will be a String with the substituted value
let result = regex.replace_all(string, substitution);
println!("{}", result);
}
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/