Keep only base/extractor.[cc|h].

goopdate/download_manager.h

-// Copyright 2007-2010 Google Inc.
-//
-// 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.
-// ========================================================================
-
-#ifndef OMAHA_GOOPDATE_DOWNLOAD_MANAGER_H_
-#define OMAHA_GOOPDATE_DOWNLOAD_MANAGER_H_
-
-#include <windows.h>
-#include <atlstr.h>
-#include <vector>
-#include "base/basictypes.h"
-#include "base/scoped_ptr.h"
-
-namespace omaha {
-
-class App;
-struct ErrorContext;
-class HttpClient;
-struct Lockable;        // TODO(omaha): make Lockable a class.
-class NetworkRequest;
-class Package;
-class PackageCache;
-
-// Public interface for the DownloadManager.
-class DownloadManagerInterface {
- public:
-  virtual ~DownloadManagerInterface() {}
-  virtual HRESULT Initialize() = 0;
-  virtual HRESULT PurgeAppLowerVersions(const CString& app_id,
-                                        const CString& version) = 0;
-  virtual HRESULT CachePackage(const Package* package,
-                               const CString* filename_path) = 0;
-  virtual HRESULT DownloadApp(App* app) = 0;
-  virtual HRESULT DownloadPackage(Package* package) = 0;
-  virtual HRESULT GetPackage(const Package* package,
-                             const CString& dir) const = 0;
-  virtual bool IsPackageAvailable(const Package* package) const = 0;
-  virtual void Cancel(App* app) = 0;
-  virtual void CancelAll() = 0;
-  virtual bool IsBusy() const = 0;
-};
-
-class DownloadManager : public DownloadManagerInterface {
- public:
-  explicit DownloadManager(bool is_machine);
-  virtual ~DownloadManager();
-
-  virtual HRESULT Initialize();
-
-  virtual HRESULT PurgeAppLowerVersions(const CString& app_id,
-                                        const CString& version);
-
-  virtual HRESULT CachePackage(const Package* package,
-                               const CString* filename_path);
-
-  // Downloads the specified app and stores its packages in the package cache.
-  //
-  // This is a blocking call. All errors are reported through the return value.
-  // Callers may use GetMessageForError() to convert this error value to an
-  // error message. Progress is reported via the NetworkRequestCallback
-  // method on the Package objects.
-  virtual HRESULT DownloadApp(App* app);
-
-  // Downloads the specified package and stores it in the package cache.
-  virtual HRESULT DownloadPackage(Package* package);
-
-  // Retrieves a package from the cache, if the package is locally available.
-  virtual HRESULT GetPackage(const Package* package, const CString& dir) const;
-
-  // Returns true if the specified package is in the package cache.
-  virtual bool IsPackageAvailable(const Package* package) const;
-
-  // Cancels the download of specified app and makes DownloadApp return to the
-  // caller at some point in the future. Cancel can be called multiple times
-  // until the DownloadApp returns.
-  virtual void Cancel(App* app);
-
-  // Cancels download of all apps currently downloading.
-  virtual void CancelAll();
-
-  // Returns true if applications are downloading.
-  virtual bool IsBusy() const;
-
-  // Returns a formatted message for the specified error in given language.
-  static CString GetMessageForError(const ErrorContext& error_context,
-                                    const CString& language);
-
- private:
-  // Maintains per-app download state.
-  class State {
-   public:
-    State(App* app, NetworkRequest* network_request);
-    ~State();
-
-    App* app() const { return app_; }
-
-    NetworkRequest* network_request() const;
-
-    HRESULT CancelNetworkRequest();
-
-   private:
-    // Not owned by this object.
-    App* app_;
-
-    scoped_ptr<NetworkRequest> network_request_;
-
-    DISALLOW_EVIL_CONSTRUCTORS(State);
-  };
-
-  // Creates a download state corresponding to the app. The state object is
-  // owned by the download manager. A pointer to the state object is returned
-  // to the caller.
-  HRESULT CreateStateForApp(App* app, State** state);
-
-  HRESULT DeleteStateForApp(App* app);
-
-  HRESULT DoDownloadPackage(Package* package, State* state);
-
-  bool is_machine() const;
-
-  CString package_cache_root() const;
-
-  PackageCache* package_cache();
-  const PackageCache* package_cache() const;
-
-  const Lockable& lock() const;
-
-  // Returns the full path to a unique filename.
-  static HRESULT BuildUniqueFileName(const CString& filename,
-                                     CString* unique_filename);
-
-  // Locks shared instance state for concurrent downloads. This lock is
-  // owned by this class.
-  mutable Lockable* volatile lock_;
-
-  bool is_machine_;
-
-  // The root of the package_cache.
-  CString package_cache_root_;
-
-  std::vector<State*> download_state_;
-
-  scoped_ptr<PackageCache> package_cache_;
-
-  friend class DownloadManagerTest;
-  DISALLOW_EVIL_CONSTRUCTORS(DownloadManager);
-};
-
-}  // namespace omaha
-
-#endif  // OMAHA_GOOPDATE_DOWNLOAD_MANAGER_H_