// 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"(?<!function )(?<!\/\/)print").unwrap();
let string = "<?php
// Description of file
...
print(\"Foobar\");
// print(\"Foo\");
//print(\"bar\");
// Open and print file
function printtemplate($file) {
...
}
...
printtemplate($file);
...
?>";
let substitution = "//$0";
// 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/