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 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 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 74 inline int strnicmp(const char* string1, const char* string2, size_t count) 75 { 76 return _strnicmp(string1, string2, count); 77 } 78 79 inline int stricmp(const char* string1, const char* string2) 80 { 81 return _stricmp(string1, string2); 82 } 83 84 inline char* strdup(const char* strSource) 85 { 86 return _strdup(strSource); 87 } 88 89 #endif 90 91 inline int strncasecmp(const char* s1, const char* s2, size_t len) 92 { 93 return _strnicmp(s1, s2, len); 94 } 95 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) 104 105 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
