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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 Mozilla Public
* License Version 1.1 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* The Original Code is the Netscape Portable Runtime (NSPR).
*
* The Initial Developer of the Original Code is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998-2000 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the
* terms of the GNU General Public License Version 2 or later (the
* "GPL"), in which case the provisions of the GPL are applicable
* instead of those above. If you wish to allow use of your
* version of this file only under the terms of the GPL and not to
* allow others to use your version of this file under the MPL,
* indicate your decision by deleting the provisions above and
* replace them with the notice and other provisions required by
* the GPL. If you do not delete the provisions above, a recipient
* may use your version of this file under either the MPL or the
* GPL.
*/
#include "plstr.h"
PR_IMPLEMENT(char *)
PL_strstr(const char *big, const char *little)
{
PRUint32 ll;
if( ((const char *)0 == big) || ((const char *)0 == little) ) return (char *)0;
if( ((char)0 == *big) || ((char)0 == *little) ) return (char *)0;
ll = PL_strlen(little);
for( ; *big; big++ )
if( *little == *big )
if( 0 == PL_strncmp(big, little, ll) )
return (char *)big;
return (char *)0;
}
PR_IMPLEMENT(char *)
PL_strrstr(const char *big, const char *little)
{
const char *p;
PRUint32 ll;
if( ((const char *)0 == big) || ((const char *)0 == little) ) return (char *)0;
if( ((char)0 == *big) || ((char)0 == *little) ) return (char *)0;
ll = PL_strlen(little);
p = &big[ PL_strlen(big) - ll ];
if( p < big ) return (char *)0;
for( ; p >= big; p-- )
if( *little == *p )
if( 0 == PL_strncmp(p, little, ll) )
return (char *)p;
return (char *)0;
}
PR_IMPLEMENT(char *)
PL_strnstr(const char *big, const char *little, PRUint32 max)
{
PRUint32 ll;
if( ((const char *)0 == big) || ((const char *)0 == little) ) return (char *)0;
if( ((char)0 == *big) || ((char)0 == *little) ) return (char *)0;
ll = PL_strlen(little);
if( ll > max ) return (char *)0;
max -= ll;
max++;
for( ; max && *big; big++, max-- )
if( *little == *big )
if( 0 == PL_strncmp(big, little, ll) )
return (char *)big;
return (char *)0;
}
PR_IMPLEMENT(char *)
PL_strnrstr(const char *big, const char *little, PRUint32 max)
{
const char *p;
PRUint32 ll;
if( ((const char *)0 == big) || ((const char *)0 == little) ) return (char *)0;
if( ((char)0 == *big) || ((char)0 == *little) ) return (char *)0;
ll = PL_strlen(little);
for( p = big; max && *p; p++, max-- )
;
p -= ll;
if( p < big ) return (char *)0;
for( ; p >= big; p-- )
if( *little == *p )
if( 0 == PL_strncmp(p, little, ll) )
return (char *)p;
return (char *)0;
}
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