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authorBruno Haible <bruno@clisp.org>2003-02-13 21:38:24 +0000
committerBruno Haible <bruno@clisp.org>2009-06-23 12:09:14 +0200
commit7b9bbc4ebf2fce14e99a9a54b13ff3424a39c4e0 (patch)
tree97d4a62e8597b6d43310d4d9bbd5586384261df9 /lib
parent7369811271d83ac8d8fad1ba9e9182ebcf900bea (diff)
downloadexternal_gettext-7b9bbc4ebf2fce14e99a9a54b13ff3424a39c4e0.zip
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Move lib/strstr.c to gettext-tools/lib/strstr.c.
Diffstat (limited to 'lib')
-rw-r--r--lib/strstr.c123
1 files changed, 0 insertions, 123 deletions
diff --git a/lib/strstr.c b/lib/strstr.c
deleted file mode 100644
index b16346b..0000000
--- a/lib/strstr.c
+++ /dev/null
@@ -1,123 +0,0 @@
-/* Return the offset of one string within another.
- Copyright (C) 1994, 1996, 1997, 2000, 2002 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public License as
- published by the Free Software Foundation; either version 2 of the
- License, or (at your option) any later version.
-
- The GNU C Library 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
- Library General Public License for more details.
-
- You should have received a copy of the GNU Library General Public
- License along with the GNU C Library; see the file COPYING.LIB. If not,
- write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
-
-/*
- * My personal strstr() implementation that beats most other algorithms.
- * Until someone tells me otherwise, I assume that this is the
- * fastest implementation of strstr() in C.
- * I deliberately chose not to comment it. You should have at least
- * as much fun trying to understand it, as I had to write it :-).
- *
- * Stephen R. van den Berg, berg@pool.informatik.rwth-aachen.de */
-
-#if HAVE_CONFIG_H
-# include <config.h>
-#endif
-
-#if defined _LIBC || defined HAVE_STRING_H
-# include <string.h>
-#endif
-
-typedef unsigned chartype;
-
-#undef strstr
-
-char *
-strstr (const char *phaystack, const char *pneedle)
-{
- register const unsigned char *haystack, *needle;
- register chartype b, c;
-
- haystack = (const unsigned char *) phaystack;
- needle = (const unsigned char *) pneedle;
-
- b = *needle;
- if (b != '\0')
- {
- haystack--; /* possible ANSI violation */
- do
- {
- c = *++haystack;
- if (c == '\0')
- goto ret0;
- }
- while (c != b);
-
- c = *++needle;
- if (c == '\0')
- goto foundneedle;
- ++needle;
- goto jin;
-
- for (;;)
- {
- register chartype a;
- register const unsigned char *rhaystack, *rneedle;
-
- do
- {
- a = *++haystack;
- if (a == '\0')
- goto ret0;
- if (a == b)
- break;
- a = *++haystack;
- if (a == '\0')
- goto ret0;
-shloop:; }
- while (a != b);
-
-jin: a = *++haystack;
- if (a == '\0')
- goto ret0;
-
- if (a != c)
- goto shloop;
-
- rhaystack = haystack-- + 1;
- rneedle = needle;
- a = *rneedle;
-
- if (*rhaystack == a)
- do
- {
- if (a == '\0')
- goto foundneedle;
- ++rhaystack;
- a = *++needle;
- if (*rhaystack != a)
- break;
- if (a == '\0')
- goto foundneedle;
- ++rhaystack;
- a = *++needle;
- }
- while (*rhaystack == a);
-
- needle = rneedle; /* took the register-poor approach */
-
- if (a == '\0')
- break;
- }
- }
-foundneedle:
- return (char*) haystack;
-ret0:
- return 0;
-}