regex-redux Dart #4 program

/* The Computer Language Benchmarks Game
   https://salsa.debian.org/benchmarksgame-team/benchmarksgame/

   contributed by Isaac Gouy, RegExp from Jos Hirth's program
*/

import 'dart:io';

void main() {
  File('/dev/stdin').readAsString().then((String s) {
    final z = s.replaceAll(RegExp('>.*\n|\n', multiLine: true), '');
    printPatternMatches(z);
    print('\n${s.length}\n${z.length}\n${magicLengthOf(z)}');
  });
}

void printPatternMatches(String s) {
  const simple = [
    'agggtaaa|tttaccct',
    '[cgt]gggtaaa|tttaccc[acg]',
    'a[act]ggtaaa|tttacc[agt]t',
    'ag[act]gtaaa|tttac[agt]ct',
    'agg[act]taaa|ttta[agt]cct',
    'aggg[acg]aaa|ttt[cgt]ccct',
    'agggt[cgt]aa|tt[acg]accct',
    'agggta[cgt]a|t[acg]taccct',
    'agggtaa[cgt]|[acg]ttaccct'
  ];

  for (var each in simple) {
    final regex = RegExp(each, multiLine: true);
    print('$each ${regex.allMatches(s).length}');
  }
}

int magicLengthOf(String s) {
  const magic = [
    ['tHa[Nt]', '<4>'],
    ['aND|caN|Ha[DS]|WaS', '<3>'],
    ['a[NSt]|BY', '<2>'],
    ['<[^>]*>', '|'],
    ['\\|[^|][^|]*\\|', '-'],
  ];

  for (var each in magic) {
    final regex = RegExp(each.first, multiLine: true);
    s = s.replaceAll(regex, each.last);
  }
  return s.length;
}

    

NOTES:
64-bit Ubuntu quad core
Dart SDK version: 3.3.0 (stable)
Tue Feb 13 10:25:19 2024



 Sat, 02 Mar 2024 04:40:34 GMT

MAKE:
/opt/src/dart-sdk/bin/dart analyze 
Analyzing tmp...
No issues found!

/opt/src/dart-sdk/bin/dart compile exe regexredux.dartexe-4.dartexe -o regexredux.dartexe-4.dartexe_run
Generated: /home/dunham/all-benchmarksgame/benchmarksgame_i53330/regexredux/tmp/regexredux.dartexe-4.dartexe_run

4.90s to complete and log all make actions

COMMAND LINE:
 ./regexredux.dartexe-4.dartexe_run 0 < regexredux-input5000000.txt

PROGRAM OUTPUT:
agggtaaa|tttaccct 356
[cgt]gggtaaa|tttaccc[acg] 1250
a[act]ggtaaa|tttacc[agt]t 4252
ag[act]gtaaa|tttac[agt]ct 2894
agg[act]taaa|ttta[agt]cct 5435
aggg[acg]aaa|ttt[cgt]ccct 1537
agggt[cgt]aa|tt[acg]accct 1431
agggta[cgt]a|t[acg]taccct 1608
agggtaa[cgt]|[acg]ttaccct 2178

50833411
50000000
27388361