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diff --git a/src/google/protobuf/testing/googletest.cc b/src/google/protobuf/testing/googletest.cc
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+// Protocol Buffers - Google's data interchange format
+// Copyright 2008 Google Inc.
+// http://code.google.com/p/protobuf/
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Author: kenton@google.com (Kenton Varda)
+// emulates google3/testing/base/public/googletest.cc
+
+#include <google/protobuf/testing/googletest.h>
+#include <google/protobuf/testing/file.h>
+#include <google/protobuf/stubs/strutil.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <errno.h>
+#include <stdlib.h>
+#ifdef _MSC_VER
+#include <io.h>
+#include <direct.h>
+#else
+#include <unistd.h>
+#endif
+#include <stdio.h>
+#include <fcntl.h>
+
+namespace google {
+namespace protobuf {
+
+#ifdef _WIN32
+#define mkdir(name, mode) mkdir(name)
+#endif
+
+#ifndef O_BINARY
+#ifdef _O_BINARY
+#define O_BINARY _O_BINARY
+#else
+#define O_BINARY 0 // If this isn't defined, the platform doesn't need it.
+#endif
+#endif
+
+string TestSourceDir() {
+#ifdef _MSC_VER
+ // Look for the "src" directory.
+ string prefix = ".";
+
+ while (!File::Exists(prefix + "/src/google/protobuf")) {
+ if (!File::Exists(prefix)) {
+ GOOGLE_LOG(FATAL)
+ << "Could not find protobuf source code. Please run tests from "
+ "somewhere within the protobuf source package.";
+ }
+ prefix += "/..";
+ }
+ return prefix + "/src";
+#else
+ // automake sets the "srcdir" environment variable.
+ char* result = getenv("srcdir");
+ if (result == NULL) {
+ // Otherwise, the test must be run from the source directory.
+ return ".";
+ } else {
+ return result;
+ }
+#endif
+}
+
+namespace {
+
+string GetTemporaryDirectoryName() {
+ // tmpnam() is generally not considered safe but we're only using it for
+ // testing. We cannot use tmpfile() or mkstemp() since we're creating a
+ // directory.
+ string result = tmpnam(NULL);
+#ifdef _WIN32
+ // On Win32, tmpnam() returns a file prefixed with '\', but which is supposed
+ // to be used in the current working directory. WTF?
+ if (HasPrefixString(result, "\\")) {
+ result.erase(0, 1);
+ }
+#endif // _WIN32
+ return result;
+}
+
+// Creates a temporary directory on demand and deletes it when the process
+// quits.
+class TempDirDeleter {
+ public:
+ TempDirDeleter() {}
+ ~TempDirDeleter() {
+ if (!name_.empty()) {
+ File::DeleteRecursively(name_, NULL, NULL);
+ }
+ }
+
+ string GetTempDir() {
+ if (name_.empty()) {
+ name_ = GetTemporaryDirectoryName();
+ GOOGLE_CHECK(mkdir(name_.c_str(), 0777) == 0) << strerror(errno);
+
+ // Stick a file in the directory that tells people what this is, in case
+ // we abort and don't get a chance to delete it.
+ File::WriteStringToFileOrDie("", name_ + "/TEMP_DIR_FOR_PROTOBUF_TESTS");
+ }
+ return name_;
+ }
+
+ private:
+ string name_;
+};
+
+TempDirDeleter temp_dir_deleter_;
+
+} // namespace
+
+string TestTempDir() {
+ return temp_dir_deleter_.GetTempDir();
+}
+
+static string stderr_capture_filename_;
+static int original_stderr_ = -1;
+
+void CaptureTestStderr() {
+ GOOGLE_CHECK_EQ(original_stderr_, -1) << "Already capturing.";
+
+ stderr_capture_filename_ = TestTempDir() + "/captured_stderr";
+
+ int fd = open(stderr_capture_filename_.c_str(),
+ O_WRONLY | O_CREAT | O_EXCL | O_BINARY, 0777);
+ GOOGLE_CHECK(fd >= 0) << "open: " << strerror(errno);
+
+ original_stderr_ = dup(2);
+ close(2);
+ dup2(fd, 2);
+ close(fd);
+}
+
+string GetCapturedTestStderr() {
+ GOOGLE_CHECK_NE(original_stderr_, -1) << "Not capturing.";
+
+ close(2);
+ dup2(original_stderr_, 2);
+ original_stderr_ = -1;
+
+ string result;
+ File::ReadFileToStringOrDie(stderr_capture_filename_, &result);
+
+ remove(stderr_capture_filename_.c_str());
+
+ return result;
+}
+
+ScopedMemoryLog* ScopedMemoryLog::active_log_ = NULL;
+
+ScopedMemoryLog::ScopedMemoryLog() {
+ GOOGLE_CHECK(active_log_ == NULL);
+ active_log_ = this;
+ old_handler_ = SetLogHandler(&HandleLog);
+}
+
+ScopedMemoryLog::~ScopedMemoryLog() {
+ SetLogHandler(old_handler_);
+ active_log_ = NULL;
+}
+
+const vector<string>& ScopedMemoryLog::GetMessages(LogLevel dummy) const {
+ GOOGLE_CHECK_EQ(dummy, ERROR);
+ return messages_;
+}
+
+void ScopedMemoryLog::HandleLog(LogLevel level, const char* filename,
+ int line, const string& message) {
+ GOOGLE_CHECK(active_log_ != NULL);
+ if (level == ERROR) {
+ active_log_->messages_.push_back(message);
+ }
+}
+
+} // namespace protobuf
+} // namespace google