// 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)<(?:div|ul|li)(?=[^>]*\bclass="([^"]+)")(?=(?:[^>]*\bdata-\w+="([^"]+)")?)"#).unwrap();
let string = "With preg_match_all I want to get class and data-attributes in html.
I asked a similar question before. The correct answer to the previous responsibility was done with DOM. But as an alternative to the DOM structure, I also need a regex version.
The pattern works fine. However, if the lines are side-by-side, they also take class names from tags that should not be accepted.
<div class=\"noproblem\">
<ul class=\"noproblem\" data-ss=\"1\">
<li class=\"noproblem\" data-ss=\"1\">
<!-- <i> is not my tag. but there s no problem with that. because it s underneath . -->
<i class=\"no_problem\"></i>
</li>
</ul>
</div>
<div class=\"noproblem\" data-ss=\"1\"> <!-- problem: data-ss is not accepted -->
<ul class=\"noproblem\" data-ss=\"1\">
<!-- <i> is not my tag. my tags: div|ul|li . -->
<li class=\"noproblem\"><i class=\"this_is_problem\"></i>
</li>
</ul>
</div>
<div class=\"noproblem\">
<ul class=\"noproblem\">
<!-- <i> is not my tag. my tags: div|ul|li . -->
<li class=\"noproblem\"><i class=\"this_is_problem\"></i>
</li>
<!-- <span> is not my tag. my tags: div|ul|li . -->
<li class=\"test\"><span class=\"this_is_problem\"></span></li>
<!-- (li class empty version): <span> is not my tag. my tags: div|ul|li . -->
<li><span class=\"this_is_problem\"></span></li>
</ul>
</div>";
// 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/