// 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)(android:layout_marginStart="(.*?)")(?:(?!layout_marginLeft).)*(?=/>)"#).unwrap();
let string = "<androidx.constraintlayout.widget.Barrier
android:id=\"@+id/barrier6\"
android:layout_width=\"wrap_content\"
android:layout_height=\"wrap_content\"
android:layout_marginStart=\"12dp\"/>
<androidx.constraintlayout.widget.Barrier
android:id=\"@+id/barrier6\"
android:layout_width=\"wrap_content\"
android:layout_height=\"wrap_content\"
android:layout_marginStart=\"15px\"/>
<androidx.constraintlayout.widget.Barrier
android:id=\"@+id/barrier6\"
android:layout_width=\"wrap_content\"
android:layout_height=\"wrap_content\"
android:layout_marginStart=\"28em\"
android:layout_marginLeft=\"28em\"/>";
let substitution = "\\1\\n\\t\\tandroid:layout_marginLeft=\"\\2\"";
// 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/