From 4f996cc5b80b308afe5460c251553319a2e2a5ac Mon Sep 17 00:00:00 2001 From: David Shaw Date: Tue, 12 Apr 2005 16:08:51 +0000 Subject: Fix minor build problem on OSX (need a replacement for memrchr) --- util/memrchr.c | 46 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 util/memrchr.c (limited to 'util/memrchr.c') diff --git a/util/memrchr.c b/util/memrchr.c new file mode 100644 index 000000000..009ae8ec4 --- /dev/null +++ b/util/memrchr.c @@ -0,0 +1,46 @@ +/* memrchr.c - libc replacement function + * Copyright (C) 2005 Free Software Foundation, Inc. + * + * This file is part of GnuPG. + * + * GnuPG is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * GnuPG is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA + */ + +/* + memrchr() is a GNU function that might not be available everywhere. + It's basically the inverse of memchr() - search backwards in a + memory block for a particular character. +*/ + +#include +#include + +/* There are many ways to optimize this, but this is a simple + unoptimized implementation. */ +void * +memrchr(const void *s, int c, size_t n) +{ + const unsigned char *start=s,*end=s+n-1; + + while(end>=start) + { + if(*end==c) + return (void *)end; + else + end--; + } + + return NULL; +} -- cgit v1.2.3