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136 lines
5.2 KiB
136 lines
5.2 KiB
/* Copyright (c) 2009, Google Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following disclaimer
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* in the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Google Inc. nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* ---
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* Author: Craig Silverstein
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*
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* These are some portability typedefs and defines to make it a bit
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* easier to compile this code under VC++.
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*
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* Several of these are taken from glib:
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* http://developer.gnome.org/doc/API/glib/glib-windows-compatability-functions.html
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*/
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#ifndef GFLAGS_WINDOWS_PORT_H_
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#define GFLAGS_WINDOWS_PORT_H_
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#include "config.h"
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// This must be defined before the windows.h is included.
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// It's needed for mutex.h, to give access to the TryLock method.
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# if !defined(_WIN32_WINNT) && !(defined( __MINGW32__) || defined(__MINGW64__))
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# define _WIN32_WINNT 0x0400
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# endif
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// We always want minimal includes
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#ifndef WIN32_LEAN_AND_MEAN
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# define WIN32_LEAN_AND_MEAN
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#endif
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#include <windows.h>
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#include <direct.h> /* for mkdir */
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#include <stdlib.h> /* for _putenv, getenv */
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#include <stdio.h> /* need this to override stdio's snprintf, also defines _unlink used by unit tests */
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#include <stdarg.h> /* util.h uses va_copy */
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#include <string.h> /* for _stricmp and _strdup */
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/* We can't just use _vsnprintf and _snprintf as drop-in-replacements,
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* because they don't always NUL-terminate. :-( We also can't use the
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* name vsnprintf, since windows defines that (but not snprintf (!)).
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*/
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#if !defined(__MINGW32__) && !defined(__MINGW64__) /* mingw already defines */
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#if !(defined(_MSC_VER) && _MSC_VER >= 1900) /* msvc 2015 already defines */
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extern GFLAGS_DLL_DECL int snprintf(char *str, size_t size,
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const char *format, ...);
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extern int GFLAGS_DLL_DECL safe_vsnprintf(char *str, size_t size,
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const char *format, va_list ap);
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#define vsnprintf(str, size, format, ap) safe_vsnprintf(str, size, format, ap)
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#define va_copy(dst, src) (dst) = (src)
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#endif
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#endif /* #if !defined(__MINGW32__) && !defined(__MINGW64__) */
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#ifdef _MSC_VER
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# pragma warning(push)
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# pragma warning(disable: 4996) // ignore getenv security warning
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#endif
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#if !defined(_POSIX_C_SOURCE) || _POSIX_C_SOURCE < 200112L
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inline void setenv(const char* name, const char* value, int) {
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// In windows, it's impossible to set a variable to the empty string.
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// We handle this by setting it to "0" and the NUL-ing out the \0.
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// That is, we putenv("FOO=0") and then find out where in memory the
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// putenv wrote "FOO=0", and change it in-place to "FOO=\0".
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// c.f. http://svn.apache.org/viewvc/stdcxx/trunk/tests/src/environ.cpp?r1=611451&r2=637508&pathrev=637508
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static const char* const kFakeZero = "0";
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if (*value == '\0')
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value = kFakeZero;
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// Apparently the semantics of putenv() is that the input
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// must live forever, so we leak memory here. :-(
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const size_t nameval_len = strlen(name) + 1 + strlen(value) + 1;
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char* nameval = reinterpret_cast<char*>(malloc(nameval_len));
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snprintf(nameval, nameval_len, "%s=%s", name, value);
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_putenv(nameval);
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if (value == kFakeZero) {
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nameval[nameval_len - 2] = '\0'; // works when putenv() makes no copy
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if (*getenv(name) != '\0')
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*getenv(name) = '\0'; // works when putenv() copies nameval
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}
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}
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#endif
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#ifdef _MSC_VER
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# pragma warning(pop)
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#endif
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#define strcasecmp _stricmp
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#if defined(_MSC_VER) && _MSC_VER >= 1400
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#define strdup _strdup
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#define unlink _unlink
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#endif
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#if defined(_MSC_VER) && _MSC_VER >= 1800
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#include <inttypes.h>
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#else
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#define PRId32 "d"
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#define PRIu32 "u"
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#define PRId64 "I64d"
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#define PRIu64 "I64u"
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#endif
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#if !defined(__MINGW32__) && !defined(__MINGW64__)
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#define strtoq _strtoi64
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#define strtouq _strtoui64
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#define strtoll _strtoi64
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#define strtoull _strtoui64
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#define atoll _atoi64
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#endif
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#ifndef PATH_MAX
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#define PATH_MAX 1024
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#endif
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#endif /* GFLAGS_WINDOWS_PORT_H_ */
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