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freebsd-dev/lib/libc/string/rindex.c

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BSD 4.4 Lite Lib Sources
1994-05-27 05:00:24 +00:00
/*
* Copyright (c) 1988, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)rindex.c 8.1 (Berkeley) 6/4/93";
#endif /* LIBC_SCCS and not lint */
rcsid[]->__FBSDID
2001-11-07 19:55:16 +00:00
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
BSD 4.4 Lite Lib Sources
1994-05-27 05:00:24 +00:00
#include <stddef.h>
- Update the manual pages of index() and rindex() to show <strings.h> as the associated header file. The prototypes have been moved there from <string.h> because POSIX.1-2001 said so. - Conditionally include either <strings.h> or <string.h> based on whether the [r]index() or str[r]chr() functions are compiled, respectively. - Style(9) tells us to - put a space after the return keyword - to check for a NUL character without using the ! operator. - use NULL instead of (type *)NULL where the compiler knows the type. Apply these rules. - Rather use ANSI-C function definitions than K&R ones. - For index(3), correct second function argument's type; it was declared to be a `const char' before and is now an `int'.
2002-08-30 19:42:07 +00:00
#ifdef STRRCHR
BSD 4.4 Lite Lib Sources
1994-05-27 05:00:24 +00:00
#include <string.h>
char *
- Update the manual pages of index() and rindex() to show <strings.h> as the associated header file. The prototypes have been moved there from <string.h> because POSIX.1-2001 said so. - Conditionally include either <strings.h> or <string.h> based on whether the [r]index() or str[r]chr() functions are compiled, respectively. - Style(9) tells us to - put a space after the return keyword - to check for a NUL character without using the ! operator. - use NULL instead of (type *)NULL where the compiler knows the type. Apply these rules. - Rather use ANSI-C function definitions than K&R ones. - For index(3), correct second function argument's type; it was declared to be a `const char' before and is now an `int'.
2002-08-30 19:42:07 +00:00
strrchr
BSD 4.4 Lite Lib Sources
1994-05-27 05:00:24 +00:00
#else
- Update the manual pages of index() and rindex() to show <strings.h> as the associated header file. The prototypes have been moved there from <string.h> because POSIX.1-2001 said so. - Conditionally include either <strings.h> or <string.h> based on whether the [r]index() or str[r]chr() functions are compiled, respectively. - Style(9) tells us to - put a space after the return keyword - to check for a NUL character without using the ! operator. - use NULL instead of (type *)NULL where the compiler knows the type. Apply these rules. - Rather use ANSI-C function definitions than K&R ones. - For index(3), correct second function argument's type; it was declared to be a `const char' before and is now an `int'.
2002-08-30 19:42:07 +00:00
#include <strings.h>
char *
rindex
BSD 4.4 Lite Lib Sources
1994-05-27 05:00:24 +00:00
#endif
- Update the manual pages of index() and rindex() to show <strings.h> as the associated header file. The prototypes have been moved there from <string.h> because POSIX.1-2001 said so. - Conditionally include either <strings.h> or <string.h> based on whether the [r]index() or str[r]chr() functions are compiled, respectively. - Style(9) tells us to - put a space after the return keyword - to check for a NUL character without using the ! operator. - use NULL instead of (type *)NULL where the compiler knows the type. Apply these rules. - Rather use ANSI-C function definitions than K&R ones. - For index(3), correct second function argument's type; it was declared to be a `const char' before and is now an `int'.
2002-08-30 19:42:07 +00:00
(const char *p, int ch)
BSD 4.4 Lite Lib Sources
1994-05-27 05:00:24 +00:00
{
Remove 'register' keyword.
2002-03-21 18:49:23 +00:00
char *save;
Brucification: Don't initialize in declaration, make sure extra lines follow declaration section.
2003-12-18 07:44:53 +00:00
char c;
BSD 4.4 Lite Lib Sources
1994-05-27 05:00:24 +00:00
Brucification: Don't initialize in declaration, make sure extra lines follow declaration section.
2003-12-18 07:44:53 +00:00
c = ch;
BSD 4.4 Lite Lib Sources
1994-05-27 05:00:24 +00:00
for (save = NULL;; ++p) {
Do comparison using appropriate casting first, as per SUSv3 (search for first [last] character, not int).
2003-12-17 02:46:48 +00:00
if (*p == c)
BSD 4.4 Lite Lib Sources
1994-05-27 05:00:24 +00:00
save = (char *)p;
- Update the manual pages of index() and rindex() to show <strings.h> as the associated header file. The prototypes have been moved there from <string.h> because POSIX.1-2001 said so. - Conditionally include either <strings.h> or <string.h> based on whether the [r]index() or str[r]chr() functions are compiled, respectively. - Style(9) tells us to - put a space after the return keyword - to check for a NUL character without using the ! operator. - use NULL instead of (type *)NULL where the compiler knows the type. Apply these rules. - Rather use ANSI-C function definitions than K&R ones. - For index(3), correct second function argument's type; it was declared to be a `const char' before and is now an `int'.
2002-08-30 19:42:07 +00:00
if (*p == '\0')
return (save);
BSD 4.4 Lite Lib Sources
1994-05-27 05:00:24 +00:00
}
/* NOTREACHED */
}
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