// 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"<item>[\s\S]*?<sub>(.*?)<\/sub>((?!<sub>)[\s\S])*<\/item>").unwrap();
let string = "<item> fffffffffffff
<sub>aaaa</sub>
<value>111</value>
</item>
<item>
<sub>eeee</sub> arg34ddddddddddddddd
<atag>ddd</atag>
<sub>aaaa</sub>
<value>222</value>
</item>
<item>
<sub>eeee</sub> arg34ddddddddddddddd
<atag>ddd</atag>
<sub>aaaa</sub>
</item>";
// 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/