Squashed 'third_party/gflags/' content from commit f0523f1
Change-Id: I7b525481a9f3ec3e48e6656735d06432c25dc3b9
git-subtree-dir: third_party/gflags
git-subtree-split: f0523f14a93cbb46fff9b318508aa1c6923158c7
diff --git a/src/windows_port.h b/src/windows_port.h
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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 */
+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)
+#define va_copy(dst, src) (dst) = (src)
+#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
+
+#define PRId32 "d"
+#define PRIu32 "u"
+#define PRId64 "I64d"
+#define PRIu64 "I64u"
+
+#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_ */