win: Implement CrashpadClient::StartHandler()

test/win/child_launcher.cc

 // Copyright 2015 The Crashpad Authors. All rights reserved.
 //
 // 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.
 
 #include "test/win/child_launcher.h"
 
 #include "gtest/gtest.h"
+#include "util/win/command_line.h"
 
 namespace crashpad {
 namespace test {
 
 ChildLauncher::ChildLauncher(const std::wstring& executable,
                              const std::wstring& command_line)
     : executable_(executable),
       command_line_(command_line),
       process_handle_(),
       main_thread_handle_(),
@@ skipping 61 matching lines @@
 DWORD ChildLauncher::WaitForExit() {
   EXPECT_TRUE(process_handle_.is_valid());
   EXPECT_EQ(WAIT_OBJECT_0,
             WaitForSingleObject(process_handle_.get(), INFINITE));
   DWORD exit_code = 0;
   EXPECT_TRUE(GetExitCodeProcess(process_handle_.get(), &exit_code));
   process_handle_.reset();
   return exit_code;
 }
 
-// Ref: http://blogs.msdn.com/b/twistylittlepassagesallalike/archive/2011/04/23/everyone-quotes-arguments-the-wrong-way.aspx
-void AppendCommandLineArgument(const std::wstring& argument,
-                               std::wstring* command_line) {
-  // Don't bother quoting if unnecessary.
-  if (!argument.empty() &&
-      argument.find_first_of(L" \t\n\v\"") == std::wstring::npos) {
-    command_line->append(argument);
-  } else {
-    command_line->push_back(L'"');
-    for (std::wstring::const_iterator i = argument.begin();; ++i) {
-      size_t backslash_count = 0;
-      while (i != argument.end() && *i == L'\\') {
-        ++i;
-        ++backslash_count;
-      }
-      if (i == argument.end()) {
-        // Escape all backslashes, but let the terminating double quotation mark
-        // we add below be interpreted as a metacharacter.
-        command_line->append(backslash_count * 2, L'\\');
-        break;
-      } else if (*i == L'"') {
-        // Escape all backslashes and the following double quotation mark.
-        command_line->append(backslash_count * 2 + 1, L'\\');
-        command_line->push_back(*i);
-      } else {
-        // Backslashes aren't special here.
-        command_line->append(backslash_count, L'\\');
-        command_line->push_back(*i);
-      }
-    }
-    command_line->push_back(L'"');
-  }
-}
-
 }  // namespace test
 }  // namespace crashpad