git/compat/strcasestr.c

23 lines
431 B
C

#include "../git-compat-util.h"
char *gitstrcasestr(const char *haystack, const char *needle)
{
int nlen = strlen(needle);
int hlen = strlen(haystack) - nlen + 1;
int i;
for (i = 0; i < hlen; i++) {
int j;
for (j = 0; j < nlen; j++) {
unsigned char c1 = haystack[i+j];
unsigned char c2 = needle[j];
if (toupper(c1) != toupper(c2))
goto next;
}
return (char *) haystack + i;
next:
;
}
return NULL;
}