LCOV - code coverage report
Current view: directory - nsprpub/lib/libc/src - strstr.c (source / functions) Found Hit Coverage
Test: app.info Lines: 40 16 40.0 %
Date: 2012-06-02 Functions: 4 2 50.0 %

       1                 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       2                 : /* ***** BEGIN LICENSE BLOCK *****
       3                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
       4                 :  *
       5                 :  * The contents of this file are subject to the Mozilla Public License Version
       6                 :  * 1.1 (the "License"); you may not use this file except in compliance with
       7                 :  * the License. You may obtain a copy of the License at
       8                 :  * http://www.mozilla.org/MPL/
       9                 :  *
      10                 :  * Software distributed under the License is distributed on an "AS IS" basis,
      11                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
      12                 :  * for the specific language governing rights and limitations under the
      13                 :  * License.
      14                 :  *
      15                 :  * The Original Code is the Netscape Portable Runtime (NSPR).
      16                 :  *
      17                 :  * The Initial Developer of the Original Code is
      18                 :  * Netscape Communications Corporation.
      19                 :  * Portions created by the Initial Developer are Copyright (C) 1998-2000
      20                 :  * the Initial Developer. All Rights Reserved.
      21                 :  *
      22                 :  * Contributor(s):
      23                 :  *
      24                 :  * Alternatively, the contents of this file may be used under the terms of
      25                 :  * either the GNU General Public License Version 2 or later (the "GPL"), or
      26                 :  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      27                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      28                 :  * of those above. If you wish to allow use of your version of this file only
      29                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      30                 :  * use your version of this file under the terms of the MPL, indicate your
      31                 :  * decision by deleting the provisions above and replace them with the notice
      32                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      33                 :  * the provisions above, a recipient may use your version of this file under
      34                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      35                 :  *
      36                 :  * ***** END LICENSE BLOCK ***** */
      37                 : 
      38                 : #include "plstr.h"
      39                 : #include <string.h>
      40                 : 
      41                 : PR_IMPLEMENT(char *)
      42            3420 : PL_strstr(const char *big, const char *little)
      43                 : {
      44            3420 :     if( ((const char *)0 == big) || ((const char *)0 == little) ) return (char *)0;
      45            3420 :     if( ((char)0 == *big) || ((char)0 == *little) ) return (char *)0;
      46                 : 
      47            3420 :     return strstr(big, little);
      48                 : }
      49                 : 
      50                 : PR_IMPLEMENT(char *)
      51               0 : PL_strrstr(const char *big, const char *little)
      52                 : {
      53                 :     const char *p;
      54                 :     size_t ll;
      55                 :     size_t bl;
      56                 : 
      57               0 :     if( ((const char *)0 == big) || ((const char *)0 == little) ) return (char *)0;
      58               0 :     if( ((char)0 == *big) || ((char)0 == *little) ) return (char *)0;
      59                 : 
      60               0 :     ll = strlen(little);
      61               0 :     bl = strlen(big);
      62               0 :     if( bl < ll ) return (char *)0;
      63               0 :     p = &big[ bl - ll ];
      64                 : 
      65               0 :     for( ; p >= big; p-- )
      66               0 :         if( *little == *p )
      67               0 :             if( 0 == strncmp(p, little, ll) )
      68               0 :                 return (char *)p;
      69                 : 
      70               0 :     return (char *)0;
      71                 : }
      72                 : 
      73                 : PR_IMPLEMENT(char *)
      74          465734 : PL_strnstr(const char *big, const char *little, PRUint32 max)
      75                 : {
      76                 :     size_t ll;
      77                 : 
      78          465734 :     if( ((const char *)0 == big) || ((const char *)0 == little) ) return (char *)0;
      79          465734 :     if( ((char)0 == *big) || ((char)0 == *little) ) return (char *)0;
      80                 : 
      81          465734 :     ll = strlen(little);
      82          465734 :     if( ll > (size_t)max ) return (char *)0;
      83          465734 :     max -= (PRUint32)ll;
      84          465734 :     max++;
      85                 : 
      86          801421 :     for( ; max && *big; big++, max-- )
      87          465738 :         if( *little == *big )
      88          430543 :             if( 0 == strncmp(big, little, ll) )
      89          130051 :                 return (char *)big;
      90                 : 
      91          335683 :     return (char *)0;
      92                 : }
      93                 : 
      94                 : PR_IMPLEMENT(char *)
      95               0 : PL_strnrstr(const char *big, const char *little, PRUint32 max)
      96                 : {
      97                 :     const char *p;
      98                 :     size_t ll;
      99                 : 
     100               0 :     if( ((const char *)0 == big) || ((const char *)0 == little) ) return (char *)0;
     101               0 :     if( ((char)0 == *big) || ((char)0 == *little) ) return (char *)0;
     102                 : 
     103               0 :     ll = strlen(little);
     104                 : 
     105               0 :     for( p = big; max && *p; p++, max-- )
     106                 :         ;
     107                 : 
     108               0 :     p -= ll;
     109               0 :     if( p < big ) return (char *)0;
     110                 : 
     111               0 :     for( ; p >= big; p-- )
     112               0 :         if( *little == *p )
     113               0 :             if( 0 == strncmp(p, little, ll) )
     114               0 :                 return (char *)p;
     115                 : 
     116               0 :     return (char *)0;
     117                 : }

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