Remove mojo/shell and (most) service implementations

mojo/shell/desktop/mojo_main.cc

-// Copyright 2013 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 <algorithm>
-#include <iostream>
-
-#include "base/at_exit.h"
-#include "base/bind.h"
-#include "base/command_line.h"
-#include "base/logging.h"
-#include "base/message_loop/message_loop.h"
-#include "base/strings/string_split.h"
-#include "base/strings/utf_string_conversions.h"
-#include "mojo/shell/child_process.h"
-#include "mojo/shell/context.h"
-#include "mojo/shell/init.h"
-#include "mojo/shell/mojo_url_resolver.h"
-#include "mojo/shell/switches.h"
-
-#if defined(COMPONENT_BUILD)
-#include "ui/gl/gl_surface.h"
-#endif
-
-namespace {
-
-#if defined(OS_LINUX)
-// Copied from ui/gfx/switches.cc to avoid a dependency on //ui/gfx
-const char kEnableHarfBuzzRenderText[] = "enable-harfbuzz-rendertext";
-#endif
-
-#if defined(OS_WIN)
-void SplitString(const base::string16& str, std::vector<std::string>* argv) {
-  base::SplitString(base::UTF16ToUTF8(str), ' ', argv);
-}
-#elif defined(OS_POSIX)
-void SplitString(const std::string& str, std::vector<std::string>* argv) {
-  base::SplitString(str, ' ', argv);
-}
-#endif
-
-bool is_empty(const std::string& s) {
-  return s.empty();
-}
-
-// The value of app_url_and_args is "<mojo_app_url> [<args>...]", where args
-// is a list of "configuration" arguments separated by spaces. If one or more
-// arguments are specified they will be available when the Mojo application
-// is initialized. See ApplicationImpl::args().
-GURL GetAppURLAndSetArgs(const base::CommandLine::StringType& app_url_and_args,
-                         mojo::shell::Context* context) {
-  // SplitString() returns empty strings for extra delimeter characters (' ').
-  std::vector<std::string> argv;
-  SplitString(app_url_and_args, &argv);
-  argv.erase(std::remove_if(argv.begin(), argv.end(), is_empty), argv.end());
-
-  if (argv.empty())
-    return GURL::EmptyGURL();
-  GURL app_url(argv[0]);
-  if (argv.size() > 1)
-    context->application_manager()->SetArgsForURL(argv, app_url);
-  return app_url;
-}
-
-void RunApps(mojo::shell::Context* context) {
-  const auto& command_line = *base::CommandLine::ForCurrentProcess();
-  for (const auto& arg : command_line.GetArgs())
-    context->Run(GetAppURLAndSetArgs(arg, context));
-}
-
-void Usage() {
-  std::cerr << "Launch Mojo applications.\n";
-  std::cerr
-      << "Usage: mojo_shell"
-      << " [--" << switches::kArgsFor << "=<mojo-app>]"
-      << " [--" << switches::kContentHandlers << "=<handlers>]"
-      << " [--" << switches::kEnableExternalApplications << "]"
-      << " [--" << switches::kDisableCache << "]"
-      << " [--" << switches::kEnableMultiprocess << "]"
-      << " [--" << switches::kOrigin << "=<url-lib-path>]"
-      << " [--" << switches::kURLMappings << "=from1=to1,from2=to2]"
-      << " <mojo-app> ...\n\n"
-      << "A <mojo-app> is a Mojo URL or a Mojo URL and arguments within "
-      << "quotes.\n"
-      << "Example: mojo_shell \"mojo://js_standalone test.js\".\n"
-      << "<url-lib-path> is searched for shared libraries named by mojo URLs.\n"
-      << "The value of <handlers> is a comma separated list like:\n"
-      << "text/html,mojo://html_viewer,"
-      << "application/javascript,mojo://js_content_handler\n";
-}
-
-bool ConfigureURLMappings(const std::string& mappings,
-                          mojo::shell::MojoURLResolver* resolver) {
-  base::StringPairs pairs;
-  if (!base::SplitStringIntoKeyValuePairs(mappings, '=', ',', &pairs))
-    return false;
-  using StringPair = std::pair<std::string, std::string>;
-  for (const StringPair& pair : pairs) {
-    const GURL from(pair.first);
-    const GURL to(pair.second);
-    if (!from.is_valid() || !to.is_valid())
-      return false;
-    resolver->AddCustomMapping(from, to);
-  }
-  return true;
-}
-
-}  // namespace
-
-int main(int argc, char** argv) {
-  base::AtExitManager at_exit;
-  base::CommandLine::Init(argc, argv);
-
-  const base::CommandLine& command_line =
-    *base::CommandLine::ForCurrentProcess();
-  if (command_line.HasSwitch(switches::kHelp) ||
-      command_line.GetArgs().empty()){
-    Usage();
-    return 0;
-  }
-
-#if defined(OS_LINUX)
-  // We use gfx::RenderText from multiple threads concurrently and the pango
-  // backend (currently the default on linux) is not close to threadsafe. Force
-  // use of the harfbuzz backend for now.
-  base::CommandLine::ForCurrentProcess()->AppendSwitch(
-      kEnableHarfBuzzRenderText);
-#endif
-  mojo::shell::InitializeLogging();
-
-  // TODO(vtl): Unify parent and child process cases to the extent possible.
-  if (scoped_ptr<mojo::shell::ChildProcess> child_process =
-          mojo::shell::ChildProcess::Create(
-              *base::CommandLine::ForCurrentProcess())) {
-    child_process->Main();
-  } else {
-#if defined(COMPONENT_BUILD)
-    gfx::GLSurface::InitializeOneOff();
-#endif
-    // We want the shell::Context to outlive the MessageLoop so that pipes are
-    // all gracefully closed / error-out before we try to shut the Context down.
-    mojo::shell::Context shell_context;
-    {
-      base::MessageLoop message_loop;
-      shell_context.Init();
-
-      if (command_line.HasSwitch(switches::kOrigin)) {
-        shell_context.mojo_url_resolver()->SetBaseURL(
-            GURL(command_line.GetSwitchValueASCII(switches::kOrigin)));
-      }
-
-      if (command_line.HasSwitch(switches::kURLMappings) &&
-          !ConfigureURLMappings(
-              command_line.GetSwitchValueASCII(switches::kURLMappings),
-              shell_context.mojo_url_resolver())) {
-        Usage();
-        return 0;
-      }
-
-      for (const auto& kv : command_line.GetSwitches()) {
-        if (kv.first == switches::kArgsFor)
-          GetAppURLAndSetArgs(kv.second, &shell_context);
-      }
-
-      message_loop.PostTask(FROM_HERE, base::Bind(RunApps, &shell_context));
-      message_loop.Run();
-    }
-  }
-  return 0;
-}