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  1. #include <regex.h>
  2. #include <stdio.h>
  3. #include <stdlib.h>
  4. #include <string.h>
  5.  
  6. int main(void) {
  7.   regex_t preg;
  8.  
  9.   const char *string =
  10.       "[com.example.app.JavaClass.JavaMethod(JavaClass.java:1)] (Thread-1) - "
  11.       "Client: FirstName MiddleName AnotherName LastName, Wallet: WL01, "
  12.       "Agency: 9999, ID: 06611486123, Ticket: TKR211";
  13.   const char *pattern = "Client:\\s[a-zA-Z[:space:]]+";
  14.  
  15.   size_t nmatch = 1;
  16.   regmatch_t pmatch[1];
  17.  
  18.   regcomp(&preg, pattern, REG_ICASE | REG_EXTENDED);
  19.  
  20.   int ret = regexec(&preg, string, nmatch, pmatch, 0);
  21.  
  22.   char *match = calloc(pmatch[0].rm_eo - pmatch[0].rm_so, sizeof(char));
  23.   memcpy(match, &string[pmatch[0].rm_so], pmatch[0].rm_eo - pmatch[0].rm_so);
  24.  
  25.   printf("ret: %d\n", ret);
  26.   printf("rm_eo0: %d\n", pmatch[0].rm_eo);
  27.   printf("rm_so0: %d\n", pmatch[0].rm_so);
  28.  
  29.   printf("Match: %s\n", match);
  30.  
  31.   regfree(&preg);
  32.  
  33.   return 0;
  34. }
Success #stdin #stdout 0s 5524KB
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stdin
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Standard input is empty
stdout
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ret: 0
rm_eo0: 119
rm_so0: 70
Match: Client: FirstName MiddleName AnotherName LastName
https://ideone.com/vDtqrG
language:
C (gcc 8.3)
created:
5 years ago
visibility:
secret

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