str_extra.c

Extra string functions library for C
git clone git://git.finwo.net/lib/str_extra.c
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str_isHex.c (396B)

      1 #include <stdlib.h>
      2 #include <string.h>
      3 
      4 #include "str_isHex.h"
      5 
      6 bool str_isHex(const char *subject) {
      7   int i;
      8   size_t l = strlen(subject);
      9   for(i = 0 ; i < l ; i++) {
     10     if (
     11       (subject[i] >= 'a' && subject[i] <= 'f') ||
     12       (subject[i] >= 'A' && subject[i] <= 'F') ||
     13       (subject[i] >= '0' && subject[i] <= '9')
     14     ) {
     15       continue;
     16     }
     17     return false;
     18   }
     19   return true;
     20 }