Get mojo_shell building inside chromium checkout.

mojo/shell/launcher_main.cc

+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "base/at_exit.h"
+#include "base/bind.h"
+#include "base/bind_helpers.h"
+#include "base/command_line.h"
+#include "base/logging.h"
+#include "base/macros.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/message_loop/message_loop.h"
+#include "base/run_loop.h"
+#include "base/strings/string_split.h"
+#include "mojo/edk/embedder/embedder.h"
+#include "mojo/edk/embedder/process_delegate.h"
+#include "mojo/edk/embedder/simple_platform_support.h"
+#include "mojo/shell/in_process_native_runner.h"
+#include "mojo/shell/init.h"
+#include "mojo/shell/native_application_support.h"
+#include "url/gurl.h"
+
+namespace mojo {
+namespace shell {
+
+const char kAppArgs[] = "app-args";
+const char kAppPath[] = "app-path";
+const char kAppURL[] = "app-url";
+const char kShellPath[] = "shell-path";
+
+class Launcher : public embedder::ProcessDelegate {
+ public:
+  explicit Launcher(const base::CommandLine& command_line)
+      : app_path_(command_line.GetSwitchValuePath(kAppPath)),
+        app_url_(command_line.GetSwitchValueASCII(kAppURL)),
+        loop_(base::MessageLoop::TYPE_IO) {
+    // TODO(vtl): I guess this should be SLAVE, not NONE?
+    embedder::InitIPCSupport(embedder::ProcessType::NONE, loop_.task_runner(),
+                             this, loop_.task_runner(),
+                             embedder::ScopedPlatformHandle());
+
+    base::SplitStringAlongWhitespace(command_line.GetSwitchValueASCII(kAppArgs),
+                                     &app_args_);
+  }
+
+  ~Launcher() override {
+    DCHECK(!application_request_.is_pending());
+
+    embedder::ShutdownIPCSupportOnIOThread();
+  }
+
+  bool Connect() { return false; }
+
+  bool Register() {
+    return application_request_.is_pending();
+  }
+
+  void Run() {
+    DCHECK(application_request_.is_pending());
+    InProcessNativeRunner service_runner(nullptr);
+    base::RunLoop run_loop;
+    service_runner.Start(app_path_, NativeApplicationCleanup::DONT_DELETE,
+                         application_request_.Pass(), run_loop.QuitClosure());
+    run_loop.Run();
+  }
+
+ private:
+  void OnRegistered(base::RunLoop* run_loop,
+                    InterfaceRequest<Application> application_request) {
+    application_request_ = application_request.Pass();
+    run_loop->Quit();
+  }
+
+  // embedder::ProcessDelegate implementation:
+  void OnShutdownComplete() override {
+    NOTREACHED();  // Not called since we use ShutdownIPCSupportOnIOThread().
+  }
+
+  const base::FilePath app_path_;
+  const GURL app_url_;
+  std::vector<std::string> app_args_;
+  base::MessageLoop loop_;
+  InterfaceRequest<Application> application_request_;
+
+  DISALLOW_COPY_AND_ASSIGN(Launcher);
+};
+
+}  // namespace shell
+}  // namespace mojo
+
+int main(int argc, char** argv) {
+  base::AtExitManager at_exit;
+  mojo::embedder::Init(
+      make_scoped_ptr(new mojo::embedder::SimplePlatformSupport()));
+
+  base::CommandLine::Init(argc, argv);
+  const base::CommandLine* command_line =
+      base::CommandLine::ForCurrentProcess();
+  mojo::shell::InitializeLogging();
+
+  mojo::shell::Launcher launcher(*command_line);
+  if (!launcher.Connect()) {
+    LOG(ERROR) << "Failed to connect on socket "
+               << command_line->GetSwitchValueASCII(mojo::shell::kShellPath);
+    return 1;
+  }
+
+  if (!launcher.Register()) {
+    LOG(ERROR) << "Error registering "
+               << command_line->GetSwitchValueASCII(mojo::shell::kAppURL);
+    return 1;
+  }
+
+  launcher.Run();
+  return 0;
+}