compat/strcasestr.c

   1 #include "../git-compat-util.h"
   2
   3 char *gitstrcasestr(const char *haystack, const char *needle)
   4 {
   5         int nlen = strlen(needle);
   6         int hlen = strlen(haystack) - nlen + 1;
   7         int i;
   8
   9         for (i = 0; i < hlen; i++) {
  10                 int j;
  11                 for (j = 0; j < nlen; j++) {
  12                         unsigned char c1 = haystack[i+j];
  13                         unsigned char c2 = needle[j];
  14                         if (toupper(c1) != toupper(c2))
  15                                 goto next;
  16                 }
  17                 return (char *) haystack + i;
  18         next:
  19                 ;
  20         }
  21         return NULL;
  22 }