text: // Copyright 2010-2021, 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 "renderer/qt/qt_ipc_server.h"
  
  #include <algorithm>
  #include <memory>
  #include <string>
  
  #include "base/logging.h"
  #include "base/system_util.h"
  #include "config/config_handler.h"
  #include "ipc/ipc.h"
  
  namespace mozc {
  namespace renderer {
  
  namespace {
  constexpr int kNumConnections = 10;
  constexpr int kIPCServerTimeOut = 1000;
  constexpr char kServiceName[] = "renderer";
  
  std::string GetServiceName() {
    std::string name = kServiceName;
    const std::string desktop_name = SystemUtil::GetDesktopNameAsString();
    if (!desktop_name.empty()) {
      name += ".";
      name += desktop_name;
    }
    return name;
  }
  }  // namespace
  
  QtIpcServer::QtIpcServer()
      : IPCServer(GetServiceName(), kNumConnections, kIPCServerTimeOut) {}
  QtIpcServer::~QtIpcServer() {}
  
  bool QtIpcServer::Process(const char *request, size_t request_size,
                            char *response, size_t *response_size) {
    std::string command_str = std::string(request, request_size);
  
    // no need to set the result code.
    *response_size = 1;
    response[0] = '\0';
  
    if (callback_) {
      callback_(command_str);
    }
    return true;
  }
  
  }  // namespace renderer
  }  // namespace mozc
  