Miscellaneous const changes and utilities
[git/dscho.git] / compat / strcasestr.c
blob26896deca64c531f57b4c48ea92134f876b8e537
1 #include "../git-compat-util.h"
3 char *gitstrcasestr(const char *haystack, const char *needle)
5         int nlen = strlen(needle);
6         int hlen = strlen(haystack) - nlen + 1;
7         int i;
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;