wtf/StringExtras.h

   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 // FIXME: why a COMPILER check instead of OS? also, these should be HAVE checks
  38
  39 inline int snprintf(char* buffer, size_t count, const char* format, ...)
  40 {
  41     int result;
  42     va_list args;
  43     va_start(args, format);
  44     result = _vsnprintf(buffer, count, format, args);
  45     va_end(args);
  46     return result;
  47 }
  48
  49 #if COMPILER(MSVC7) || OS(WINCE)
  50
  51 inline int vsnprintf(char* buffer, size_t count, const char* format, va_list args)
  52 {
  53     return _vsnprintf(buffer, count, format, args);
  54 }
  55
  56 #endif
  57
  58 #if OS(WINCE)
  59
  60 inline int strnicmp(const char* string1, const char* string2, size_t count)
  61 {
  62     return _strnicmp(string1, string2, count);
  63 }
  64
  65 inline int stricmp(const char* string1, const char* string2)
  66 {
  67     return _stricmp(string1, string2);
  68 }
  69
  70 inline char* strdup(const char* strSource)
  71 {
  72     return _strdup(strSource);
  73 }
  74
  75 #endif
  76
  77 inline int strncasecmp(const char* s1, const char* s2, size_t len)
  78 {
  79     return _strnicmp(s1, s2, len);
  80 }
  81
  82 inline int strcasecmp(const char* s1, const char* s2)
  83 {
  84     return _stricmp(s1, s2);
  85 }
  86
  87 #endif
  88
  89 #if OS(WINDOWS) || OS(LINUX) || OS(SOLARIS)
  90 // FIXME: should check HAVE_STRNSTR
  91
  92 inline char* strnstr(const char* buffer, const char* target, size_t bufferLength)
  93 {
  94     size_t targetLength = strlen(target);
  95     if (targetLength == 0)
  96         return const_cast<char*>(buffer);
  97     for (const char* start = buffer; *start && start + targetLength <= buffer + bufferLength; start++) {
  98         if (*start == *target && strncmp(start + 1, target + 1, targetLength - 1) == 0)
  99             return const_cast<char*>(start);
 100     }
 101     return 0;
 102 }
 103
 104 #endif
 105
 106 #if COMPILER(RVCT) && __ARMCC_VERSION < 400000
 107
 108 int strcasecmp(const char* s1, const char* s2);
 109 int strncasecmp(const char* s1, const char* s2, size_t len);
 110
 111 #endif
 112
 113 #endif // WTF_StringExtras_h