// 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)(?<!\w)(?:http://www\.example\.com)?/(\S+?)\.pdf\b").unwrap();
let string = "some containing string http://www.example.com/subfolder/name.pdf or /subfolder/name.pdf
<a href=\"/pdf/subdir/name.pdf\">clickhere</a><a href=\"/pdf/subdir/name.pdf\">2nd PDF</a>";
let substitution = "/wp-content/uploads/old/$1.pdf";
// 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/