nsprpub/lib/libc/src/strchr.c@925c144e1f1f (annotated)
nsprpub/lib/libc/src/strchr.c
Fri, 16 Jan 2015 18:13:44 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Fri, 16 Jan 2015 18:13:44 +0100
- branch
- TOR_BUG_9701
- changeset 14
- 925c144e1f1f
- permissions
- -rw-r--r--
Integrate suggestion from review to improve consistency with existing code.
| michael@0 | 1 | /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
| michael@0 | 2 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 3 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 4 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 5 | |
| michael@0 | 6 | #include "plstr.h" |
| michael@0 | 7 | #include <string.h> |
| michael@0 | 8 | |
| michael@0 | 9 | PR_IMPLEMENT(char *) |
| michael@0 | 10 | PL_strchr(const char *s, char c) |
| michael@0 | 11 | { |
| michael@0 | 12 | if( (const char *)0 == s ) return (char *)0; |
| michael@0 | 13 | |
| michael@0 | 14 | return strchr(s, c); |
| michael@0 | 15 | } |
| michael@0 | 16 | |
| michael@0 | 17 | PR_IMPLEMENT(char *) |
| michael@0 | 18 | PL_strrchr(const char *s, char c) |
| michael@0 | 19 | { |
| michael@0 | 20 | if( (const char *)0 == s ) return (char *)0; |
| michael@0 | 21 | |
| michael@0 | 22 | return strrchr(s, c); |
| michael@0 | 23 | } |
| michael@0 | 24 | |
| michael@0 | 25 | PR_IMPLEMENT(char *) |
| michael@0 | 26 | PL_strnchr(const char *s, char c, PRUint32 n) |
| michael@0 | 27 | { |
| michael@0 | 28 | if( (const char *)0 == s ) return (char *)0; |
| michael@0 | 29 | |
| michael@0 | 30 | for( ; n && *s; s++, n-- ) |
| michael@0 | 31 | if( *s == c ) |
| michael@0 | 32 | return (char *)s; |
| michael@0 | 33 | |
| michael@0 | 34 | if( ((char)0 == c) && (n > 0) && ((char)0 == *s) ) return (char *)s; |
| michael@0 | 35 | |
| michael@0 | 36 | return (char *)0; |
| michael@0 | 37 | } |
| michael@0 | 38 | |
| michael@0 | 39 | PR_IMPLEMENT(char *) |
| michael@0 | 40 | PL_strnrchr(const char *s, char c, PRUint32 n) |
| michael@0 | 41 | { |
| michael@0 | 42 | const char *p; |
| michael@0 | 43 | |
| michael@0 | 44 | if( (const char *)0 == s ) return (char *)0; |
| michael@0 | 45 | |
| michael@0 | 46 | for( p = s; n && *p; p++, n-- ) |
| michael@0 | 47 | ; |
| michael@0 | 48 | |
| michael@0 | 49 | if( ((char)0 == c) && (n > 0) && ((char)0 == *p) ) return (char *)p; |
| michael@0 | 50 | |
| michael@0 | 51 | for( p--; p >= s; p-- ) |
| michael@0 | 52 | if( *p == c ) |
| michael@0 | 53 | return (char *)p; |
| michael@0 | 54 | |
| michael@0 | 55 | return (char *)0; |
| michael@0 | 56 | } |
