Refactor out path-related methods from file_system_host_context into a separated module.

No functionality changes; code relocation/cleanup only.

This change is necessary to improve test coverage for another coming change
(hide the FileSystem's root directory under 'unpredictrable' location).

BUG=none
TEST=FileSystemPathManager.*

Review URL: http://codereview.chromium.org/3703003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@62259 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 69 insertions, 0 deletions

diff --git a/webkit/fileapi/file_system_path_manager.h b/webkit/fileapi/file_system_path_manager.h
new file mode 100644
index 0000000..505a3c1
--- /dev/null
+++ b/webkit/fileapi/file_system_path_manager.h
@@ -0,0 +1,69 @@
+// Copyright (c) 2010 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.
+
+#ifndef WEBKIT_FILEAPI_FILE_SYSTEM_PATH_MANAGER_H_
+#define WEBKIT_FILEAPI_FILE_SYSTEM_PATH_MANAGER_H_
+
+#include <map>
+
+#include "base/callback.h"
+#include "base/file_path.h"
+#include "base/scoped_ptr.h"
+#include "googleurl/src/gurl.h"
+#include "webkit/fileapi/file_system_types.h"
+
+namespace fileapi {
+
+class FileSystemPathManager {
+ public:
+  FileSystemPathManager(const FilePath& data_path,
+                        bool is_incognito,
+                        bool allow_file_access_from_files);
+
+  // Returns the root path and name for the file system specified by given
+  // |origin_url| and |type|.  Returns true if the file system is available
+  // for the profile and |root_path| and |name| are filled successfully.
+  bool GetFileSystemRootPath(const GURL& origin_url,
+                             fileapi::FileSystemType type,
+                             FilePath* root_path,
+                             std::string* name) const;
+
+  // Checks if a given |path| is in the FileSystem base directory.
+  bool CheckValidFileSystemPath(const FilePath& path) const;
+
+  // Retrieves the origin URL for the given |path| and populates
+  // |origin_url|.  It returns false when the given |path| is not a
+  // valid filesystem path.
+  bool GetOriginFromPath(const FilePath& path, GURL* origin_url);
+
+  // Returns true if the given |url|'s scheme is allowed to access
+  // filesystem.
+  bool IsAllowedScheme(const GURL& url) const;
+
+  // Checks if a given |filename| contains any restricted names/chars in it.
+  bool IsRestrictedFileName(const FilePath& filename) const;
+
+  // The FileSystem directory name.
+  static const FilePath::CharType kFileSystemDirectory[];
+
+  static const char kPersistentName[];
+  static const char kTemporaryName[];
+
+ private:
+  class GetFileSystemRootPathTask;
+  friend class GetFileSystemRootPathTask;
+
+  // Returns the storage identifier string for the given |url|.
+  static std::string GetStorageIdentifierFromURL(const GURL& url);
+
+  const FilePath base_path_;
+  const bool is_incognito_;
+  bool allow_file_access_from_files_;
+
+  DISALLOW_COPY_AND_ASSIGN(FileSystemPathManager);
+};
+
+}  // namespace fileapi
+
+#endif  // WEBKIT_FILEAPI_FILE_SYSTEM_PATH_MANAGER_H_