// 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)(<p value="id">(?=1445).+\R.+<p value="IP">)(\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})(.+)"#).unwrap();
let string = " <list name=\"ItemList\">
<item>
<p value=\"id\">1445</p>
<p value=\"IP\">10.25.30.19</p>
<p value=\"Prflen\">26</p>
</item>
<list name=\"ItemList\">
<item>
<p value=\"id\">1499</p>
<p value=\"IP\">10.40.50.53</p>
<p value=\"Prflen\">26</p>
</item>
<list name=\"ItemList\">
<item>
<p value=\"id\">1445</p>
<p value=\"IP\">10.45.70.19</p>
<p value=\"Prflen\">26</p>
</item>
<list name=\"ItemList\">
<item>
<p value=\"id\">1446</p>
<p value=\"IP\">10.77.90.55</p>
<p value=\"Prflen\">26</p>
</item>";
let substitution = "\\110.25.30.19\\3";
// 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/