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 : *
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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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37 :
38 : #include "plstr.h"
39 : #include <string.h>
40 :
41 : PR_IMPLEMENT(char *)
42 11497 : PL_strchr(const char *s, char c)
43 : {
44 11497 : if( (const char *)0 == s ) return (char *)0;
45 :
46 11497 : return strchr(s, c);
47 : }
48 :
49 : PR_IMPLEMENT(char *)
50 178 : PL_strrchr(const char *s, char c)
51 : {
52 178 : if( (const char *)0 == s ) return (char *)0;
53 :
54 178 : return strrchr(s, c);
55 : }
56 :
57 : PR_IMPLEMENT(char *)
58 0 : PL_strnchr(const char *s, char c, PRUint32 n)
59 : {
60 0 : if( (const char *)0 == s ) return (char *)0;
61 :
62 0 : for( ; n && *s; s++, n-- )
63 0 : if( *s == c )
64 0 : return (char *)s;
65 :
66 0 : if( ((char)0 == c) && (n > 0) && ((char)0 == *s) ) return (char *)s;
67 :
68 0 : return (char *)0;
69 : }
70 :
71 : PR_IMPLEMENT(char *)
72 0 : PL_strnrchr(const char *s, char c, PRUint32 n)
73 : {
74 : const char *p;
75 :
76 0 : if( (const char *)0 == s ) return (char *)0;
77 :
78 0 : for( p = s; n && *p; p++, n-- )
79 : ;
80 :
81 0 : if( ((char)0 == c) && (n > 0) && ((char)0 == *p) ) return (char *)p;
82 :
83 0 : for( p--; p >= s; p-- )
84 0 : if( *p == c )
85 0 : return (char *)p;
86 :
87 0 : return (char *)0;
88 : }
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