// 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"(?ms)^step\s*(\d+)\s*(.*?)\s*(?=^step\s*\d|\Z)").unwrap();
let string = "This is the first line of the file.
here we tell you to make a tea.
step 1
Pour more than enough water for a cup of tea into a regular pot, and bring it to a boil.
step
2
This will prevent the steeping water from dropping in temperature as soon as it is poured in.
step 3
When using tea bags, the measuring has already been done for you - generally it's one tea bag per cup.";
// 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/