Separate mojo/shell into a runner and the application manager (shell)

mojo/shell/application_manager/local_fetcher.cc

-// Copyright 2015 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 "mojo/shell/application_manager/local_fetcher.h"
-
-#include "base/bind.h"
-#include "base/files/file_util.h"
-#include "base/format_macros.h"
-#include "base/message_loop/message_loop.h"
-#include "base/strings/stringprintf.h"
-#include "base/strings/utf_string_conversions.h"
-#include "base/trace_event/trace_event.h"
-#include "mojo/common/common_type_converters.h"
-#include "mojo/common/data_pipe_utils.h"
-#include "mojo/common/url_type_converters.h"
-#include "url/url_util.h"
-
-namespace mojo {
-namespace shell {
-
-namespace {
-
-void IgnoreResult(bool result) {
-}
-
-}  // namespace
-
-// A loader for local files.
-LocalFetcher::LocalFetcher(const GURL& url,
-                           const GURL& url_without_query,
-                           const FetchCallback& loader_callback)
-    : Fetcher(loader_callback), url_(url), path_(UrlToFile(url_without_query)) {
-  TRACE_EVENT1("mojo_shell", "LocalFetcher::LocalFetcher", "url", url.spec());
-  loader_callback_.Run(make_scoped_ptr(this));
-}
-
-base::FilePath LocalFetcher::UrlToFile(const GURL& url) {
-  DCHECK(url.SchemeIsFile());
-  url::RawCanonOutputW<1024> output;
-  url::DecodeURLEscapeSequences(url.path().data(),
-                                static_cast<int>(url.path().length()), &output);
-  base::string16 decoded_path = base::string16(output.data(), output.length());
-#if defined(OS_WIN)
-  base::TrimString(decoded_path, L"/", &decoded_path);
-  base::FilePath path(decoded_path);
-#else
-  base::FilePath path(base::UTF16ToUTF8(decoded_path));
-#endif
-  return path;
-}
-
-const GURL& LocalFetcher::GetURL() const {
-  return url_;
-}
-
-GURL LocalFetcher::GetRedirectURL() const {
-  return GURL::EmptyGURL();
-}
-
-URLResponsePtr LocalFetcher::AsURLResponse(base::TaskRunner* task_runner,
-                                           uint32_t skip) {
-  URLResponsePtr response(URLResponse::New());
-  response->url = String::From(url_);
-  DataPipe data_pipe;
-  response->body = data_pipe.consumer_handle.Pass();
-  int64 file_size;
-  if (base::GetFileSize(path_, &file_size)) {
-    response->headers = Array<String>(1);
-    response->headers[0] =
-        base::StringPrintf("Content-Length: %" PRId64, file_size);
-  }
-  common::CopyFromFile(path_, data_pipe.producer_handle.Pass(), skip,
-                       task_runner, base::Bind(&IgnoreResult));
-  return response.Pass();
-}
-
-void LocalFetcher::AsPath(
-    base::TaskRunner* task_runner,
-    base::Callback<void(const base::FilePath&, bool)> callback) {
-  // Async for consistency with network case.
-  base::MessageLoop::current()->PostTask(
-      FROM_HERE, base::Bind(callback, path_, base::PathExists(path_)));
-}
-
-std::string LocalFetcher::MimeType() {
-  return "";
-}
-
-bool LocalFetcher::HasMojoMagic() {
-  std::string magic;
-  ReadFileToString(path_, &magic, strlen(kMojoMagic));
-  return magic == kMojoMagic;
-}
-
-bool LocalFetcher::PeekFirstLine(std::string* line) {
-  std::string start_of_file;
-  ReadFileToString(path_, &start_of_file, kMaxShebangLength);
-  size_t return_position = start_of_file.find('\n');
-  if (return_position == std::string::npos)
-    return false;
-  *line = start_of_file.substr(0, return_position + 1);
-  return true;
-}
-
-}  // namespace shell
-}  // namespace mojo