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      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
    114