1 /*
2 * Copyright (C) 2006, 2010 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 #include <string.h>
32
33 #if HAVE(STRINGS_H)
34 #include <strings.h>
35 #endif
36
37 #if COMPILER(MSVC)
38 // FIXME: why a COMPILER check instead of OS? also, these should be HAVE checks
39
snprintf(char * buffer,size_t count,const char * format,...)40 inline int snprintf(char* buffer, size_t count, const char* format, ...)
41 {
42 int result;
43 va_list args;
44 va_start(args, format);
45 result = _vsnprintf(buffer, count, format, args);
46 va_end(args);
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
53 return result;
54 }
55
wtf_vsnprintf(char * buffer,size_t count,const char * format,va_list args)56 inline double wtf_vsnprintf(char* buffer, size_t count, const char* format, va_list args)
57 {
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;
66 }
67
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)
71
72 #if OS(WINCE)
73
strnicmp(const char * string1,const char * string2,size_t count)74 inline int strnicmp(const char* string1, const char* string2, size_t count)
75 {
76 return _strnicmp(string1, string2, count);
77 }
78
stricmp(const char * string1,const char * string2)79 inline int stricmp(const char* string1, const char* string2)
80 {
81 return _stricmp(string1, string2);
82 }
83
strdup(const char * strSource)84 inline char* strdup(const char* strSource)
85 {
86 return _strdup(strSource);
87 }
88
89 #endif
90
strncasecmp(const char * s1,const char * s2,size_t len)91 inline int strncasecmp(const char* s1, const char* s2, size_t len)
92 {
93 return _strnicmp(s1, s2, len);
94 }
95
strcasecmp(const char * s1,const char * s2)96 inline int strcasecmp(const char* s1, const char* s2)
97 {
98 return _stricmp(s1, s2);
99 }
100
101 #endif
102
103 #if !HAVE(STRNSTR)
104
strnstr(const char * buffer,const char * target,size_t bufferLength)105 inline 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
121 int strcasecmp(const char* s1, const char* s2);
122 int strncasecmp(const char* s1, const char* s2, size_t len);
123
124 #endif
125
126 #endif // WTF_StringExtras_h
127