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/
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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.
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22 : * Contributor(s):
23 : *
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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"),
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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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