swh:1:snp:9122196eae575fab73c94e4b90aec1d16a3f6036
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Tip revision: 66e871b6647ffea61a77a0f82c7ef3415f1ee79c authored by Junio C Hamano on 16 January 2021, 05:48:20 UTC
The third batch
Tip revision: 66e871b
strcasestr.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;
}
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