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- /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
- /*
- * The contents of this file are subject to the Netscape Public License
- * Version 1.0 (the "NPL"); you may not use this file except in
- * compliance with the NPL. You may obtain a copy of the NPL at
- * http://www.mozilla.org/NPL/
- *
- * Software distributed under the NPL is distributed on an "AS IS" basis,
- * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
- * for the specific language governing rights and limitations under the
- * NPL.
- *
- * The Initial Developer of this code under the NPL is Netscape
- * Communications Corporation. Portions created by Netscape are
- * Copyright (C) 1998 Netscape Communications Corporation. All Rights
- * Reserved.
- */
-
- #include "plstr.h"
-
- PR_IMPLEMENT(char *)
- PL_strchr(const char *s, char c)
- {
- if( (const char *)0 == s ) return (char *)0;
-
- for( ; *s; s++ )
- if( *s == c )
- return (char *)s;
-
- if( (char)0 == c ) return (char *)s;
-
- return (char *)0;
- }
-
- PR_IMPLEMENT(char *)
- PL_strrchr(const char *s, char c)
- {
- const char *p;
-
- if( (const char *)0 == s ) return (char *)0;
-
- for( p = s; *p; p++ )
- ;
-
- for( ; p >= s; p-- )
- if( *p == c )
- return (char *)p;
-
- return (char *)0;
- }
-
- PR_IMPLEMENT(char *)
- PL_strnchr(const char *s, char c, PRUint32 n)
- {
- if( (const char *)0 == s ) return (char *)0;
-
- for( ; *s && n; s++, n-- )
- if( *s == c )
- return (char *)s;
-
- if( ((char)0 == c) && ((char)0 == *s) && (n > 0)) return (char *)s;
-
- return (char *)0;
- }
-
- PR_IMPLEMENT(char *)
- PL_strnrchr(const char *s, char c, PRUint32 n)
- {
- const char *p;
-
- if( (const char *)0 == s ) return (char *)0;
-
- for( p = s; *p && n; p++, n-- )
- ;
-
- if( ((char)0 == c) && ((char)0 == *p) && (n > 0) ) return (char *)p;
-
- for( p--; p >= s; p-- )
- if( *p == c )
- return (char *)p;
-
- return (char *)0;
- }
-