StringExtras.h revision 231d4e3152a9c27a73b6ac7badbe6be673aa3ddf 
1/*
2 * Copyright (C) 2006 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#ifndef WTF_StringExtras_h
27#define WTF_StringExtras_h
28
29#include <stdarg.h>
30#include <stdio.h>
31
32#if HAVE(STRINGS_H)
33#include <strings.h>
34#endif
35
36#if COMPILER(MSVC)
37
38inline int snprintf(char* buffer, size_t count, const char* format, ...)
39{
40    int result;
41    va_list args;
42    va_start(args, format);
43    result = _vsnprintf(buffer, count, format, args);
44    va_end(args);
45    return result;
46}
47
48#if COMPILER(MSVC7) || PLATFORM(WINCE)
49
50inline int vsnprintf(char* buffer, size_t count, const char* format, va_list args)
51{
52    return _vsnprintf(buffer, count, format, args);
53}
54
55#endif
56
57#if PLATFORM(WINCE)
58
59inline int strnicmp(const char* string1, const char* string2, size_t count)
60{
61    return _strnicmp(string1, string2, count);
62}
63
64inline int stricmp(const char* string1, const char* string2)
65{
66    return _stricmp(string1, string2);
67}
68
69inline char* strdup(const char* strSource)
70{
71    return _strdup(strSource);
72}
73
74#endif
75
76inline int strncasecmp(const char* s1, const char* s2, size_t len)
77{
78    return strnicmp(s1, s2, len);
79}
80
81inline int strcasecmp(const char* s1, const char* s2)
82{
83    return stricmp(s1, s2);
84}
85
86#endif
87
88#if PLATFORM(WIN_OS) || PLATFORM(LINUX)
89
90inline char* strnstr(const char* buffer, const char* target, size_t bufferLength)
91{
92    size_t targetLength = strlen(target);
93    if (targetLength == 0)
94        return const_cast<char*>(buffer);
95    for (const char* start = buffer; *start && start + targetLength <= buffer + bufferLength; start++) {
96        if (*start == *target && strncmp(start + 1, target + 1, targetLength - 1) == 0)
97            return const_cast<char*>(start);
98    }
99    return 0;
100}
101
102#endif
103
104#endif // WTF_StringExtras_h
105