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57 lines
1.2 KiB
57 lines
1.2 KiB
#[cfg(not(feature = "perl"))]
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extern crate regex;
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#[cfg(not(feature = "perl"))]
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use regex::Regex;
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#[cfg(not(feature = "perl"))]
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fn main() {
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let args: Vec<String> = std::env::args().collect();
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if args.len() < 4 {
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println!("Usage: {} <str> <regex> <group>", args[0]);
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} else {
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let re = Regex::new(&args[2]).unwrap();
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let text = &args[1];
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let group: usize = args[3].parse().expect("Invalid group number.");
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match re.captures(&text) {
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Some(groups) => {
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if group > groups.len() {
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eprintln!("Invalid group number.");
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} else {
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println!("{}", groups.get(group).unwrap().as_str());
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}
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}
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None => (),
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}
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}
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}
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#[cfg(feature = "perl")]
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extern crate pcre;
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#[cfg(feature = "perl")]
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use pcre::Pcre;
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#[cfg(feature = "perl")]
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fn main () {
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let args: Vec<String> = std::env::args().collect();
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if args.len() < 4 {
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println!("Usage: {} <str> <regex> <group>", args[0]);
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} else {
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let mut re = Pcre::compile(&args[2]).expect("Invalid regex.");
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let text = &args[1];
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let group: usize = args[3].parse().expect("Invalid group number.");
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match re.exec(&text) {
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Some(m) if m.string_count() > group => println!("{}", m.group(group)),
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_ => (),
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}
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}
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}
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