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git/compat/strcasestr.c
Linus Torvalds ef34af24dc [PATCH] strcasestr compatibility replacement
Some C libraries lack strcasestr(); add a stupid replacement
to help folks with such.

[jc: original Linus posting, updated with his "also need <ctype.h>",
 updated further with a fix from Joachim B Haga <cjhaga@fys.uio.no>"]

Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-09-19 08:49:39 -07:00

23 lines
438 B
C

#include <string.h>
#include <ctype.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;
}