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/* Copyright (c) 2009, Google 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:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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 THE COPYRIGHT
* OWNER 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.
*
* ---
* Author: Craig Silverstein
*
* These are some portability typedefs and defines to make it a bit
* easier to compile this code under VC++.
*
* Several of these are taken from glib:
* http://developer.gnome.org/doc/API/glib/glib-windows-compatability-functions.html
*/
#ifndef GFLAGS_WINDOWS_PORT_H_
#define GFLAGS_WINDOWS_PORT_H_
#include "config.h"
// This must be defined before the windows.h is included.
// It's needed for mutex.h, to give access to the TryLock method.
# if !defined(_WIN32_WINNT) && !(defined( __MINGW32__) || defined(__MINGW64__))
# define _WIN32_WINNT 0x0400
# endif
// We always want minimal includes
#ifndef WIN32_LEAN_AND_MEAN
# define WIN32_LEAN_AND_MEAN
#endif
#include <windows.h>
#include <direct.h> /* for mkdir */
#include <stdlib.h> /* for _putenv, getenv */
#include <stdio.h> /* need this to override stdio's snprintf, also defines _unlink used by unit tests */
#include <stdarg.h> /* util.h uses va_copy */
#include <string.h> /* for _stricmp and _strdup */
/* We can't just use _vsnprintf and _snprintf as drop-in-replacements,
* because they don't always NUL-terminate. :-( We also can't use the
* name vsnprintf, since windows defines that (but not snprintf (!)).
*/
#if !defined(__MINGW32__) && !defined(__MINGW64__) /* mingw already defines */
#if !(defined(_MSC_VER) && _MSC_VER >= 1900) /* msvc 2015 already defines */
extern GFLAGS_DLL_DECL int snprintf(char *str, size_t size,
const char *format, ...);
extern int GFLAGS_DLL_DECL safe_vsnprintf(char *str, size_t size,
const char *format, va_list ap);
#define vsnprintf(str, size, format, ap) safe_vsnprintf(str, size, format, ap)
#if defined(_MSC_VER) && (_MSC_VER < 1400)
#define va_copy(dst, src) (dst) = (src)
#endif
#endif
#endif /* #if !defined(__MINGW32__) && !defined(__MINGW64__) */
#ifdef _MSC_VER
# pragma warning(push)
# pragma warning(disable: 4996) // ignore getenv security warning
#endif
inline void setenv(const char* name, const char* value, int) {
// In windows, it's impossible to set a variable to the empty string.
// We handle this by setting it to "0" and the NUL-ing out the \0.
// That is, we putenv("FOO=0") and then find out where in memory the
// putenv wrote "FOO=0", and change it in-place to "FOO=\0".
// c.f. http://svn.apache.org/viewvc/stdcxx/trunk/tests/src/environ.cpp?r1=611451&r2=637508&pathrev=637508
static const char* const kFakeZero = "0";
if (*value == '\0')
value = kFakeZero;
// Apparently the semantics of putenv() is that the input
// must live forever, so we leak memory here. :-(
const size_t nameval_len = strlen(name) + 1 + strlen(value) + 1;
char* nameval = reinterpret_cast<char*>(malloc(nameval_len));
snprintf(nameval, nameval_len, "%s=%s", name, value);
_putenv(nameval);
if (value == kFakeZero) {
nameval[nameval_len - 2] = '\0'; // works when putenv() makes no copy
if (*getenv(name) != '\0')
*getenv(name) = '\0'; // works when putenv() copies nameval
}
}
#ifdef _MSC_VER
# pragma warning(pop)
#endif
#define strcasecmp _stricmp
#if defined(_MSC_VER) && _MSC_VER >= 1400
#define strdup _strdup
#define unlink _unlink
#endif
#if !(defined(_MSC_VER) && _MSC_VER >= 1400)
#define PRId32 "d"
#define PRIu32 "u"
#define PRId64 "I64d"
#define PRIu64 "I64u"
#endif
#if !defined(__MINGW32__) && !defined(__MINGW64__)
#define strtoq _strtoi64
#define strtouq _strtoui64
#define strtoll _strtoi64
#define strtoull _strtoui64
#define atoll _atoi64
#endif
#ifndef PATH_MAX
#define PATH_MAX 1024
#endif
#endif /* GFLAGS_WINDOWS_PORT_H_ */
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