source code
/* 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, command-line, and program output
NOTES:
64-bit Ubuntu quad core
Dart SDK version: 3.5.2 (stable)
Wed Aug 28 10:01:20 2024
Thu, 05 Sep 2024 03:06:24 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
5.53s 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