// 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".+HappyMK\s?(?<action>\S+)\s(?<chain>\w+):\sin:(?<int_in>\S+)\sout:(?<int_out>\S+), src-mac\s(?<src_mac>\S+),\sproto\s(?<prot>\w+)(\s(?<flags>\S+),|,)\s(?<src_ip>\b(?:\d{1,3}\.){3}\d{1,3}\b):(?<src_port>\d+)->(?<dest_ip>\b(?:\d{1,3}\.){3}\d{1,3}\b):(?<dest_port>\d+),(\s(?<NAT>\w+)\s\((?<src_nat_localip>\b(?:\d{1,3}\.){3}\d{1,3}\b):(?<src_nat_local_port>\d+)->(?<src_nat_public_ip>\b(?:\d{1,3}\.){3}\d{1,3}\b):(?<src_nat_public_port>\d+)\)->(?<dest_nat_ip>\b(?:\d{1,3}\.){3}\d{1,3}\b):(?<dest_nat_port>\d+),)?(\sprio\s(?<prio>\d+->\d+),)?\slen\s(?<len>\d+)").unwrap();
let string = "May 30 11:56:03 10.10.0.1 May 30 11:56:04 HappyMK Accept forward: in:bridge-vlan11 out:ether1-gateway, src-mac 60:c5:47:09:bd:c8, proto TCP (SYN), 10.11.0.251:58615->17.134.126.209:443, prio 1->0, len 64
May 30 11:55:29 10.10.0.1 May 30 11:55:29 HappyMK Accept forward: in:vlan10 out:ether1-gateway, src-mac 00:60:6e:a5:61:c1, proto UDP, 10.10.0.14:62164->157.56.106.184:3544, NAT (10.10.0.14:62164->89.141.65.84:62164)->157.56.106.184:3544, len 84
May 30 11:56:25 10.10.0.1 May 30 11:56:26 HappyMK Accept forward: in:vlan10 out:ether1-gateway, src-mac 00:60:6e:a5:61:c1, proto UDP, 10.10.0.14:62164->157.56.106.189:3544, len 84
";
// result will be a tuple containing the start and end indices for the first match in the string
let result = regex.captures(string);
let (start, end) = match result {
Some((s, e)) => (s, e),
None => {
// ...
}
};
println!("{}", &string[start, end]);
}
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/