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[PATCH] strcasestr compatibility replacement

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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>
This commit is contained in:
Linus Torvalds 2005-09-18 18:30:50 -07:00 committed by Junio C Hamano
parent 727132834e
commit ef34af24dc
2 changed files with 29 additions and 0 deletions
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6
Makefile
View File

@ -9,6 +9,8 @@
# Define NO_CURL if you do not have curl installed. git-http-pull is not
# built, and you cannot use http:// and https:// transports.
#
# Define NO_STRCASESTR if you don't have strcasestr.
#
# Define PPC_SHA1 environment variable when running make to make use of
# a bundled SHA1 routine optimized for PowerPC.
#
@ -203,6 +205,10 @@ ifdef NEEDS_NSL
LIBS += -lnsl
SIMPLE_LIB += -lnsl
endif
ifdef NO_STRCASESTR
DEFINES += -Dstrcasestr=gitstrcasestr
LIB_OBJS += compat/strcasestr.o
endif
DEFINES += '-DSHA1_HEADER=$(SHA1_HEADER)'

23
compat/strcasestr.c Normal file
View File

@ -0,0 +1,23 @@
#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;
}