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+// Copyright 2008, 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.
+
+#include "gmock/gmock.h"
+
+#include <string>
+
+#include "gmock/internal/gmock-port.h"
+
+GMOCK_DEFINE_bool_(catch_leaked_mocks, true,
+ "true if and only if Google Mock should report leaked "
+ "mock objects as failures.");
+
+GMOCK_DEFINE_string_(verbose, testing::internal::kWarningVerbosity,
+ "Controls how verbose Google Mock's output is."
+ " Valid values:\n"
+ " info - prints all messages.\n"
+ " warning - prints warnings and errors.\n"
+ " error - prints errors only.");
+
+GMOCK_DEFINE_int32_(default_mock_behavior, 1,
+ "Controls the default behavior of mocks."
+ " Valid values:\n"
+ " 0 - by default, mocks act as NiceMocks.\n"
+ " 1 - by default, mocks act as NaggyMocks.\n"
+ " 2 - by default, mocks act as StrictMocks.");
+
+namespace testing {
+namespace internal {
+
+// Parses a string as a command line flag. The string should have the
+// format "--gmock_flag=value". When def_optional is true, the
+// "=value" part can be omitted.
+//
+// Returns the value of the flag, or NULL if the parsing failed.
+static const char* ParseGoogleMockFlagValue(const char* str,
+ const char* flag_name,
+ bool def_optional) {
+ // str and flag must not be NULL.
+ if (str == nullptr || flag_name == nullptr) return nullptr;
+
+ // The flag must start with "--gmock_".
+ const std::string flag_name_str = std::string("--gmock_") + flag_name;
+ const size_t flag_name_len = flag_name_str.length();
+ if (strncmp(str, flag_name_str.c_str(), flag_name_len) != 0) return nullptr;
+
+ // Skips the flag name.
+ const char* flag_end = str + flag_name_len;
+
+ // When def_optional is true, it's OK to not have a "=value" part.
+ if (def_optional && (flag_end[0] == '\0')) {
+ return flag_end;
+ }
+
+ // If def_optional is true and there are more characters after the
+ // flag name, or if def_optional is false, there must be a '=' after
+ // the flag name.
+ if (flag_end[0] != '=') return nullptr;
+
+ // Returns the string after "=".
+ return flag_end + 1;
+}
+
+// Parses a string for a Google Mock bool flag, in the form of
+// "--gmock_flag=value".
+//
+// On success, stores the value of the flag in *value, and returns
+// true. On failure, returns false without changing *value.
+static bool ParseGoogleMockFlag(const char* str, const char* flag_name,
+ bool* value) {
+ // Gets the value of the flag as a string.
+ const char* const value_str = ParseGoogleMockFlagValue(str, flag_name, true);
+
+ // Aborts if the parsing failed.
+ if (value_str == nullptr) return false;
+
+ // Converts the string value to a bool.
+ *value = !(*value_str == '0' || *value_str == 'f' || *value_str == 'F');
+ return true;
+}
+
+// Parses a string for a Google Mock string flag, in the form of
+// "--gmock_flag=value".
+//
+// On success, stores the value of the flag in *value, and returns
+// true. On failure, returns false without changing *value.
+template <typename String>
+static bool ParseGoogleMockFlag(const char* str, const char* flag_name,
+ String* value) {
+ // Gets the value of the flag as a string.
+ const char* const value_str = ParseGoogleMockFlagValue(str, flag_name, false);
+
+ // Aborts if the parsing failed.
+ if (value_str == nullptr) return false;
+
+ // Sets *value to the value of the flag.
+ *value = value_str;
+ return true;
+}
+
+static bool ParseGoogleMockFlag(const char* str, const char* flag_name,
+ int32_t* value) {
+ // Gets the value of the flag as a string.
+ const char* const value_str = ParseGoogleMockFlagValue(str, flag_name, true);
+
+ // Aborts if the parsing failed.
+ if (value_str == nullptr) return false;
+
+ // Sets *value to the value of the flag.
+ return ParseInt32(Message() << "The value of flag --" << flag_name, value_str,
+ value);
+}
+
+// The internal implementation of InitGoogleMock().
+//
+// The type parameter CharType can be instantiated to either char or
+// wchar_t.
+template <typename CharType>
+void InitGoogleMockImpl(int* argc, CharType** argv) {
+ // Makes sure Google Test is initialized. InitGoogleTest() is
+ // idempotent, so it's fine if the user has already called it.
+ InitGoogleTest(argc, argv);
+ if (*argc <= 0) return;
+
+ for (int i = 1; i != *argc; i++) {
+ const std::string arg_string = StreamableToString(argv[i]);
+ const char* const arg = arg_string.c_str();
+
+ // Do we see a Google Mock flag?
+ bool found_gmock_flag = false;
+
+#define GMOCK_INTERNAL_PARSE_FLAG(flag_name) \
+ if (!found_gmock_flag) { \
+ auto value = GMOCK_FLAG_GET(flag_name); \
+ if (ParseGoogleMockFlag(arg, #flag_name, &value)) { \
+ GMOCK_FLAG_SET(flag_name, value); \
+ found_gmock_flag = true; \
+ } \
+ }
+
+ GMOCK_INTERNAL_PARSE_FLAG(catch_leaked_mocks)
+ GMOCK_INTERNAL_PARSE_FLAG(verbose)
+ GMOCK_INTERNAL_PARSE_FLAG(default_mock_behavior)
+
+ if (found_gmock_flag) {
+ // Yes. Shift the remainder of the argv list left by one. Note
+ // that argv has (*argc + 1) elements, the last one always being
+ // NULL. The following loop moves the trailing NULL element as
+ // well.
+ for (int j = i; j != *argc; j++) {
+ argv[j] = argv[j + 1];
+ }
+
+ // Decrements the argument count.
+ (*argc)--;
+
+ // We also need to decrement the iterator as we just removed
+ // an element.
+ i--;
+ }
+ }
+}
+
+} // namespace internal
+
+// Initializes Google Mock. This must be called before running the
+// tests. In particular, it parses a command line for the flags that
+// Google Mock recognizes. Whenever a Google Mock flag is seen, it is
+// removed from argv, and *argc is decremented.
+//
+// No value is returned. Instead, the Google Mock flag variables are
+// updated.
+//
+// Since Google Test is needed for Google Mock to work, this function
+// also initializes Google Test and parses its flags, if that hasn't
+// been done.
+GTEST_API_ void InitGoogleMock(int* argc, char** argv) {
+ internal::InitGoogleMockImpl(argc, argv);
+}
+
+// This overloaded version can be used in Windows programs compiled in
+// UNICODE mode.
+GTEST_API_ void InitGoogleMock(int* argc, wchar_t** argv) {
+ internal::InitGoogleMockImpl(argc, argv);
+}
+
+// This overloaded version can be used on Arduino/embedded platforms where
+// there is no argc/argv.
+GTEST_API_ void InitGoogleMock() {
+ // Since Arduino doesn't have a command line, fake out the argc/argv arguments
+ int argc = 1;
+ const auto arg0 = "dummy";
+ char* argv0 = const_cast<char*>(arg0);
+ char** argv = &argv0;
+
+ internal::InitGoogleMockImpl(&argc, argv);
+}
+
+} // namespace testing