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authorStephen Kitt <skitt@debian.org>2016-05-27 10:11:04 +0200
committerManuel A. Fernandez Montecelo <manuel.montezelo@gmail.com>2016-05-27 14:28:33 +0100
commit752fd7247bc223bcea35bd89cf56d1c08ead9ba6 (patch)
treeb4a428f847a963738faaf24c8eff070fdb03a3a5 /lib/strstr.c
parent9f7d4fa477ff2a51d7c932b13d57ac22dc033105 (diff)
parenta9a31b1de5776a3b08a82101a4fa711294f0dd1d (diff)
Imported Debian patch 0.9.6+really0.9.3-0.1debian/0.9.6+really0.9.3-0.1
Diffstat (limited to 'lib/strstr.c')
-rw-r--r--lib/strstr.c82
1 files changed, 0 insertions, 82 deletions
diff --git a/lib/strstr.c b/lib/strstr.c
deleted file mode 100644
index 3aa05b57..00000000
--- a/lib/strstr.c
+++ /dev/null
@@ -1,82 +0,0 @@
-/* Copyright (C) 1991-1994, 1996-1998, 2000, 2004, 2007-2015 Free Software
- Foundation, Inc.
- This file is part of the GNU C Library.
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2, or (at your option)
- any later version.
-
- This program 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 Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License along
- with this program; if not, see <http://www.gnu.org/licenses/>. */
-
-/* This particular implementation was written by Eric Blake, 2008. */
-
-#ifndef _LIBC
-# include <config.h>
-#endif
-
-/* Specification of strstr. */
-#include <string.h>
-
-#include <stdbool.h>
-
-#ifndef _LIBC
-# define __builtin_expect(expr, val) (expr)
-#endif
-
-#define RETURN_TYPE char *
-#define AVAILABLE(h, h_l, j, n_l) \
- (!memchr ((h) + (h_l), '\0', (j) + (n_l) - (h_l)) \
- && ((h_l) = (j) + (n_l)))
-#include "str-two-way.h"
-
-/* Return the first occurrence of NEEDLE in HAYSTACK. Return HAYSTACK
- if NEEDLE is empty, otherwise NULL if NEEDLE is not found in
- HAYSTACK. */
-char *
-strstr (const char *haystack_start, const char *needle_start)
-{
- const char *haystack = haystack_start;
- const char *needle = needle_start;
- size_t needle_len; /* Length of NEEDLE. */
- size_t haystack_len; /* Known minimum length of HAYSTACK. */
- bool ok = true; /* True if NEEDLE is prefix of HAYSTACK. */
-
- /* Determine length of NEEDLE, and in the process, make sure
- HAYSTACK is at least as long (no point processing all of a long
- NEEDLE if HAYSTACK is too short). */
- while (*haystack && *needle)
- ok &= *haystack++ == *needle++;
- if (*needle)
- return NULL;
- if (ok)
- return (char *) haystack_start;
-
- /* Reduce the size of haystack using strchr, since it has a smaller
- linear coefficient than the Two-Way algorithm. */
- needle_len = needle - needle_start;
- haystack = strchr (haystack_start + 1, *needle_start);
- if (!haystack || __builtin_expect (needle_len == 1, 0))
- return (char *) haystack;
- needle -= needle_len;
- haystack_len = (haystack > haystack_start + needle_len ? 1
- : needle_len + haystack_start - haystack);
-
- /* Perform the search. Abstract memory is considered to be an array
- of 'unsigned char' values, not an array of 'char' values. See
- ISO C 99 section 6.2.6.1. */
- if (needle_len < LONG_NEEDLE_THRESHOLD)
- return two_way_short_needle ((const unsigned char *) haystack,
- haystack_len,
- (const unsigned char *) needle, needle_len);
- return two_way_long_needle ((const unsigned char *) haystack, haystack_len,
- (const unsigned char *) needle, needle_len);
-}
-
-#undef LONG_NEEDLE_THRESHOLD