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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3. #include <regex.h>
  4.  
  5. int verifyPattern(char *pattern) {
  6.     regex_t regex;
  7.     int reti = regcomp(&regex, "^s/(\\\\.|[^\\\\/]+)+/(\\\\.|[^\\\\/]+)*/g$", REG_EXTENDED);
  8.  
  9.     if (reti) {
  10.         fprintf(stderr, "Could not compile regex\n");
  11.         exit(1);
  12.     }
  13.  
  14.     reti = regexec(&regex, pattern, 0, NULL, 0);
  15.     if (!reti) {
  16.         puts("Match");
  17.     } else if (reti == REG_NOMATCH) {
  18.         puts("No match");
  19.     } else {
  20.         puts("Regex error");
  21.     }
  22.  
  23.     return 1;
  24. }
  25. int main (void)
  26. {
  27.     verifyPattern("s/s/s/g");//Match
  28.     verifyPattern("s/s//g");//Match
  29.     verifyPattern("s//s/g");//No Match
  30.     verifyPattern("s/s\\/s/g");//No match
  31.     verifyPattern("s/s\\/s/text/text/text/g"); // No match
  32. }
Success #stdin #stdout 0s 2300KB
comments (?)
stdin 
Standard input is empty
stdout 
Match
Match
No match
No match
No match
https://ideone.com/h2gjY9
language:
C (gcc 8.3)
created:
7 years ago
visibility:
secret

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