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b37bf2e1 1/*
14957cd0 2 * Copyright (C) 2006, 2010 Apple Inc. All rights reserved.
b37bf2e1
A
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
b37bf2e1 29#include <stdarg.h>
9dae56ea 30#include <stdio.h>
14957cd0 31#include <string.h>
b37bf2e1 32
ba379fdc
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33#if HAVE(STRINGS_H)
34#include <strings.h>
35#endif
36
b37bf2e1 37#if COMPILER(MSVC)
f9bf01c6 38// FIXME: why a COMPILER check instead of OS? also, these should be HAVE checks
b37bf2e1 39
9dae56ea 40inline int snprintf(char* buffer, size_t count, const char* format, ...)
b37bf2e1
A
41{
42 int result;
43 va_list args;
44 va_start(args, format);
9dae56ea 45 result = _vsnprintf(buffer, count, format, args);
b37bf2e1 46 va_end(args);
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47
48 // In the case where the string entirely filled the buffer, _vsnprintf will not
49 // null-terminate it, but snprintf must.
50 if (count > 0)
51 buffer[count - 1] = '\0';
52
b37bf2e1
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53 return result;
54}
55
14957cd0 56inline double wtf_vsnprintf(char* buffer, size_t count, const char* format, va_list args)
9dae56ea 57{
14957cd0
A
58 int result = _vsnprintf(buffer, count, format, args);
59
60 // In the case where the string entirely filled the buffer, _vsnprintf will not
61 // null-terminate it, but vsnprintf must.
62 if (count > 0)
63 buffer[count - 1] = '\0';
64
65 return result;
9dae56ea
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66}
67
14957cd0
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68// Work around a difference in Microsoft's implementation of vsnprintf, where
69// vsnprintf does not null terminate the buffer. WebKit can rely on the null termination.
70#define vsnprintf(buffer, count, format, args) wtf_vsnprintf(buffer, count, format, args)
b37bf2e1 71
f9bf01c6 72#if OS(WINCE)
9dae56ea
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73
74inline int strnicmp(const char* string1, const char* string2, size_t count)
75{
76 return _strnicmp(string1, string2, count);
77}
78
79inline int stricmp(const char* string1, const char* string2)
80{
81 return _stricmp(string1, string2);
82}
83
84inline char* strdup(const char* strSource)
85{
86 return _strdup(strSource);
87}
88
89#endif
90
91inline int strncasecmp(const char* s1, const char* s2, size_t len)
92{
f9bf01c6 93 return _strnicmp(s1, s2, len);
9dae56ea
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94}
95
96inline int strcasecmp(const char* s1, const char* s2)
97{
f9bf01c6 98 return _stricmp(s1, s2);
9dae56ea 99}
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100
101#endif
102
14957cd0 103#if !HAVE(STRNSTR)
f9bf01c6
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104
105inline char* strnstr(const char* buffer, const char* target, size_t bufferLength)
106{
107 size_t targetLength = strlen(target);
108 if (targetLength == 0)
109 return const_cast<char*>(buffer);
110 for (const char* start = buffer; *start && start + targetLength <= buffer + bufferLength; start++) {
111 if (*start == *target && strncmp(start + 1, target + 1, targetLength - 1) == 0)
112 return const_cast<char*>(start);
113 }
114 return 0;
115}
116
117#endif
118
119#if COMPILER(RVCT) && __ARMCC_VERSION < 400000
120
121int strcasecmp(const char* s1, const char* s2);
122int strncasecmp(const char* s1, const char* s2, size_t len);
123
124#endif
125
b37bf2e1 126#endif // WTF_StringExtras_h