/*
* Copyright (C) 2006, 2010 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef WTF_StringExtras_h
#define WTF_StringExtras_h
#if OS(POSIX)
#define HAVE_STRINGS_H 1
#endif
#if !defined(HAVE_STRNSTR)
#if OS(MACOSX) || (OS(FREEBSD) && !defined(__GLIBC__))
#define HAVE_STRNSTR 1
#endif
#endif
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#if HAVE(STRINGS_H)
#include <strings.h>
#endif
#if COMPILER(MSVC)
// FIXME: why a COMPILER check instead of OS? also, these should be HAVE checks
inline int snprintf(char* buffer, size_t count, const char* format, ...)
{
int result;
va_list args;
va_start(args, format);
result = _vsnprintf(buffer, count, format, args);
va_end(args);
// In the case where the string entirely filled the buffer, _vsnprintf will not
// null-terminate it, but snprintf must.
if (count > 0)
buffer[count - 1] = '\0';
return result;
}
inline double wtf_vsnprintf(char* buffer, size_t count, const char* format, va_list args)
{
int result = _vsnprintf(buffer, count, format, args);
// In the case where the string entirely filled the buffer, _vsnprintf will not
// null-terminate it, but vsnprintf must.
if (count > 0)
buffer[count - 1] = '\0';
return result;
}
// Work around a difference in Microsoft's implementation of vsnprintf, where
// vsnprintf does not null terminate the buffer. WebKit can rely on the null termination.
#define vsnprintf(buffer, count, format, args) wtf_vsnprintf(buffer, count, format, args)
inline int strncasecmp(const char* s1, const char* s2, size_t len)
{
return _strnicmp(s1, s2, len);
}
inline int strcasecmp(const char* s1, const char* s2)
{
return _stricmp(s1, s2);
}
#endif
#if !HAVE(STRNSTR)
inline char* strnstr(const char* buffer, const char* target, size_t bufferLength)
{
size_t targetLength = strlen(target);
if (targetLength == 0)
return const_cast<char*>(buffer);
for (const char* start = buffer; *start && start + targetLength <= buffer + bufferLength; start++) {
if (*start == *target && strncmp(start + 1, target + 1, targetLength - 1) == 0)
return const_cast<char*>(start);
}
return 0;
}
#endif
#endif // WTF_StringExtras_h