// 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#"(?i)((?:(?:https?|ftp):\/{2})(?:(?:[0-9a-z_@-]+\.)+(?:[0-9a-z]){2,4})?(?:(?:\/(?:[~0-9a-z\#\+\%\@\.\/_-]+))?\/)*(?=\s|\"))(\/)?(index\.html?)?"#).unwrap();
let string = "there is some text with <a href=\" http://www.Something.com/ \"> but without index.html; then there is another one that is <a href = \"https://www.other.com/more/stuff/index.html\"> which should be unaltered.
Finally does it work for href = \"http://www.com/stuff/\"
http://www.index.com/
http://ex.com/a/b/\"
http://www.example.com add /index.html
http://www.example.com/something do nothing
http://www.example.com/something/ add /index.html
http://www.example.com/something/index.html do nothing
";
let substitution = "\\1/index.html";
// 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/