// 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"(?m)^(?:(?:[\s\w]*(?:({(?:[\s\w]*%\(\w*\)[\s\w]*)+(?:{(?:[\s\w]*%\(\w*\)[\s\w]*)+})*})+)[\s\w]*)+)$").unwrap();
let string = "# Your valid example
abc {st1 %(ph1) st11} int {st2 %(ph2) st22}{st3 %(ph3) st33 {st31 %(ph4) st332}} cd
# Your valid Legenda
OptionalStaticText{OptionalStaticText %(Placeholder) OptionalStaticText {OptionalSubSection} OptionalStaticText} OptionalStaticText
# Your invalid example
abc {st1 %(ph1) st11} int {st2 %(ph2) st22}{st3 %(ph3) st33 {st31 %(ph4) st332}} c-d
# Without pre / post optional static text and some optional text inside section
{%(Placeholder) OptionalStaticText {OptionalSubSection}}
# With only a placeholder in the section
OptionalStaticText{%(Placeholder)} OptionalStaticText
# The valid version
abc {st1 %(ph1) st11} int {st2 %(ph2) st22}{st3 %(ph3) st33 {st31 %(ph4) st332}} cd
";
// 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/