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Diffstat (limited to 'webkit/fileapi/file_util_helper.cc')
| -rw-r--r-- | webkit/fileapi/file_util_helper.cc | 379 |
1 files changed, 0 insertions, 379 deletions
diff --git a/webkit/fileapi/file_util_helper.cc b/webkit/fileapi/file_util_helper.cc deleted file mode 100644 index 49ea72c..0000000 --- a/webkit/fileapi/file_util_helper.cc +++ /dev/null @@ -1,379 +0,0 @@ -// Copyright (c) 2012 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 "webkit/fileapi/file_util_helper.h" - -#include <stack> -#include <utility> - -#include "webkit/fileapi/file_system_file_util.h" -#include "webkit/fileapi/file_system_operation_context.h" -#include "webkit/fileapi/file_system_url.h" -#include "webkit/fileapi/file_system_util.h" - -using base::PlatformFileError; - -namespace fileapi { - -namespace { - -// A helper class to delete a temporary file. -class ScopedFileDeleter { - public: - explicit ScopedFileDeleter(const base::FilePath& path) : path_(path) {} - ~ScopedFileDeleter() { - file_util::Delete(path_, false /* recursive */); - } - - private: - base::FilePath path_; -}; - -bool IsInRoot(const FileSystemURL& url) { - // If path is in the root, path.DirName() will be ".", - // since we use paths with no leading '/'. - base::FilePath parent = url.path().DirName(); - return parent.empty() || parent == base::FilePath(FILE_PATH_LITERAL(".")); -} - -// A helper class for cross-FileUtil Copy/Move operations. -class CrossFileUtilHelper { - public: - enum Operation { - OPERATION_COPY, - OPERATION_MOVE - }; - - CrossFileUtilHelper(FileSystemOperationContext* context, - FileSystemFileUtil* src_util, - FileSystemFileUtil* dest_util, - const FileSystemURL& src_url, - const FileSystemURL& dest_url, - Operation operation); - ~CrossFileUtilHelper(); - - base::PlatformFileError DoWork(); - - private: - // Performs common pre-operation check and preparation. - // This may delete the destination directory if it's empty. - base::PlatformFileError PerformErrorCheckAndPreparation(); - - // Performs recursive copy or move by calling CopyOrMoveFile for individual - // files. Operations for recursive traversal are encapsulated in this method. - // It assumes src_url and dest_url have passed - // PerformErrorCheckAndPreparationForMoveAndCopy(). - base::PlatformFileError CopyOrMoveDirectory( - const FileSystemURL& src_url, - const FileSystemURL& dest_url); - - // Determines whether a simple same-filesystem move or copy can be done. If - // so, it delegates to CopyOrMoveFile. Otherwise it looks up the true - // platform path of the source file, delegates to CopyInForeignFile, and [for - // move] calls DeleteFile on the source file. - base::PlatformFileError CopyOrMoveFile( - const FileSystemURL& src_url, - const FileSystemURL& dest_url); - - FileSystemOperationContext* context_; - FileSystemFileUtil* src_util_; // Not owned. - FileSystemFileUtil* dest_util_; // Not owned. - const FileSystemURL& src_root_url_; - const FileSystemURL& dest_root_url_; - Operation operation_; - bool same_file_system_; - - DISALLOW_COPY_AND_ASSIGN(CrossFileUtilHelper); -}; - -CrossFileUtilHelper::CrossFileUtilHelper( - FileSystemOperationContext* context, - FileSystemFileUtil* src_util, - FileSystemFileUtil* dest_util, - const FileSystemURL& src_url, - const FileSystemURL& dest_url, - Operation operation) - : context_(context), - src_util_(src_util), - dest_util_(dest_util), - src_root_url_(src_url), - dest_root_url_(dest_url), - operation_(operation) { - DCHECK(src_util_); - DCHECK(dest_util_); - same_file_system_ = - src_root_url_.origin() == dest_root_url_.origin() && - src_root_url_.type() == dest_root_url_.type(); -} - -CrossFileUtilHelper::~CrossFileUtilHelper() {} - -base::PlatformFileError CrossFileUtilHelper::DoWork() { - // It is an error to try to copy/move an entry into its child. - if (same_file_system_ && src_root_url_.path().IsParent(dest_root_url_.path())) - return base::PLATFORM_FILE_ERROR_INVALID_OPERATION; - - // It is an error to copy/move an entry into the same path. - if (same_file_system_ && - src_root_url_.path() == dest_root_url_.path()) - return base::PLATFORM_FILE_ERROR_EXISTS; - - // First try to copy/move the file. - base::PlatformFileError error = CopyOrMoveFile(src_root_url_, dest_root_url_); - if (error == base::PLATFORM_FILE_OK || - error != base::PLATFORM_FILE_ERROR_NOT_A_FILE) - return error; - - // Now we should be sure that the source (and destination if exists) - // is directory. - // Now let's try to remove the destination directory, this must - // fail if the directory isn't empty or its parent doesn't exist. - error = dest_util_->DeleteDirectory(context_, dest_root_url_); - if (error == base::PLATFORM_FILE_ERROR_NOT_A_DIRECTORY) - return base::PLATFORM_FILE_ERROR_INVALID_OPERATION; - if (error != base::PLATFORM_FILE_OK && - error != base::PLATFORM_FILE_ERROR_NOT_FOUND) - return error; - - // Perform the actual work for directory copy/move. - return CopyOrMoveDirectory(src_root_url_, dest_root_url_); -} - -PlatformFileError CrossFileUtilHelper::CopyOrMoveDirectory( - const FileSystemURL& src_url, - const FileSystemURL& dest_url) { - // At this point we must have gone through - // PerformErrorCheckAndPreparationForMoveAndCopy so this must be true. - DCHECK(!same_file_system_ || - !src_url.path().IsParent(dest_url.path())); - - PlatformFileError error = dest_util_->CreateDirectory( - context_, dest_url, false /* exclusive */, false /* recursive */); - if (error != base::PLATFORM_FILE_OK) - return error; - - typedef std::pair<FileSystemURL, base::Time> MovedDirectoryPair; - typedef std::vector<MovedDirectoryPair> MovedDirectories; - MovedDirectories directories; - - // Store modified timestamp of the root directory. - if (operation_ == OPERATION_MOVE) { - base::PlatformFileInfo file_info; - base::FilePath platform_file_path; - error = src_util_->GetFileInfo( - context_, src_url, &file_info, &platform_file_path); - if (error != base::PLATFORM_FILE_OK) - return error; - directories.push_back( - std::make_pair(dest_url, file_info.last_modified)); - } - - scoped_ptr<FileSystemFileUtil::AbstractFileEnumerator> file_enum( - src_util_->CreateFileEnumerator(context_, - src_url, - true /* recursive */)); - base::FilePath src_file_path_each; - while (!(src_file_path_each = file_enum->Next()).empty()) { - base::FilePath dest_file_path_each(dest_url.path()); - src_url.path().AppendRelativePath( - src_file_path_each, &dest_file_path_each); - - if (file_enum->IsDirectory()) { - error = dest_util_->CreateDirectory( - context_, - dest_url.WithPath(dest_file_path_each), - true /* exclusive */, false /* recursive */); - if (error != base::PLATFORM_FILE_OK) - return error; - - directories.push_back(std::make_pair( - dest_url.WithPath(dest_file_path_each), - file_enum->LastModifiedTime())); - } else { - error = CopyOrMoveFile(src_url.WithPath(src_file_path_each), - dest_url.WithPath(dest_file_path_each)); - if (error != base::PLATFORM_FILE_OK) - return error; - } - } - - if (operation_ == OPERATION_MOVE) { - // Restore modified timestamp of destination directories. - for (MovedDirectories::const_iterator it(directories.begin()); - it != directories.end(); ++it) { - error = dest_util_->Touch(context_, it->first, it->second, it->second); - if (error != base::PLATFORM_FILE_OK) - return error; - } - - error = FileUtilHelper::Delete( - context_, src_util_, src_url, true /* recursive */); - if (error != base::PLATFORM_FILE_OK) - return error; - } - - return base::PLATFORM_FILE_OK; -} - -PlatformFileError CrossFileUtilHelper::CopyOrMoveFile( - const FileSystemURL& src_url, - const FileSystemURL& dest_url) { - if (same_file_system_) { - DCHECK(src_util_ == dest_util_); - // Source and destination are in the same FileSystemFileUtil; now we can - // safely call FileSystemFileUtil method on src_util_ (== dest_util_). - return src_util_->CopyOrMoveFile(context_, src_url, dest_url, - operation_ == OPERATION_COPY); - } - - // Resolve the src_url's underlying file path. - base::PlatformFileInfo file_info; - base::FilePath platform_file_path; - SnapshotFilePolicy snapshot_policy; - - PlatformFileError error = src_util_->CreateSnapshotFile( - context_, src_url, &file_info, &platform_file_path, &snapshot_policy); - if (error != base::PLATFORM_FILE_OK) - return error; - - // For now we don't support non-snapshot file case. - // TODO(kinuko): Address this case too. - DCHECK(!platform_file_path.empty()); - - scoped_ptr<ScopedFileDeleter> file_deleter; - if (snapshot_policy == kSnapshotFileTemporary) - file_deleter.reset(new ScopedFileDeleter(platform_file_path)); - - // Call CopyInForeignFile() on the dest_util_ with the resolved source path - // to perform limited cross-FileSystemFileUtil copy/move. - error = dest_util_->CopyInForeignFile( - context_, platform_file_path, dest_url); - - if (operation_ == OPERATION_COPY || error != base::PLATFORM_FILE_OK) - return error; - return src_util_->DeleteFile(context_, src_url); -} - -} // anonymous namespace - -// static -bool FileUtilHelper::DirectoryExists(FileSystemOperationContext* context, - FileSystemFileUtil* file_util, - const FileSystemURL& url) { - if (url.path().empty()) - return true; - - base::PlatformFileInfo file_info; - base::FilePath platform_path; - PlatformFileError error = file_util->GetFileInfo( - context, url, &file_info, &platform_path); - return error == base::PLATFORM_FILE_OK && file_info.is_directory; -} - -// static -base::PlatformFileError FileUtilHelper::Copy( - FileSystemOperationContext* context, - FileSystemFileUtil* src_file_util, - FileSystemFileUtil* dest_file_util, - const FileSystemURL& src_root_url, - const FileSystemURL& dest_root_url) { - return CrossFileUtilHelper(context, src_file_util, dest_file_util, - src_root_url, dest_root_url, - CrossFileUtilHelper::OPERATION_COPY).DoWork(); -} - -// static -base::PlatformFileError FileUtilHelper::Move( - FileSystemOperationContext* context, - FileSystemFileUtil* src_file_util, - FileSystemFileUtil* dest_file_util, - const FileSystemURL& src_root_url, - const FileSystemURL& dest_root_url) { - return CrossFileUtilHelper(context, src_file_util, dest_file_util, - src_root_url, dest_root_url, - CrossFileUtilHelper::OPERATION_MOVE).DoWork(); -} - -// static -base::PlatformFileError FileUtilHelper::Delete( - FileSystemOperationContext* context, - FileSystemFileUtil* file_util, - const FileSystemURL& url, - bool recursive) { - if (DirectoryExists(context, file_util, url)) { - if (!recursive) - return file_util->DeleteDirectory(context, url); - else - return DeleteDirectoryRecursive(context, file_util, url); - } else { - return file_util->DeleteFile(context, url); - } -} - -// static -base::PlatformFileError FileUtilHelper::ReadDirectory( - FileSystemOperationContext* context, - FileSystemFileUtil* file_util, - const FileSystemURL& url, - std::vector<base::FileUtilProxy::Entry>* entries) { - DCHECK(entries); - - base::PlatformFileInfo file_info; - base::FilePath platform_path; - PlatformFileError error = file_util->GetFileInfo( - context, url, &file_info, &platform_path); - if (error != base::PLATFORM_FILE_OK) - return error; - if (!file_info.is_directory) - return base::PLATFORM_FILE_ERROR_NOT_A_DIRECTORY; - - scoped_ptr<FileSystemFileUtil::AbstractFileEnumerator> file_enum( - file_util->CreateFileEnumerator(context, url, false /* recursive */)); - - base::FilePath current; - while (!(current = file_enum->Next()).empty()) { - base::FileUtilProxy::Entry entry; - entry.is_directory = file_enum->IsDirectory(); - entry.name = VirtualPath::BaseName(current).value(); - entry.size = file_enum->Size(); - entry.last_modified_time = file_enum->LastModifiedTime(); - entries->push_back(entry); - } - return base::PLATFORM_FILE_OK; -} - -// static -base::PlatformFileError FileUtilHelper::DeleteDirectoryRecursive( - FileSystemOperationContext* context, - FileSystemFileUtil* file_util, - const FileSystemURL& url) { - - scoped_ptr<FileSystemFileUtil::AbstractFileEnumerator> file_enum( - file_util->CreateFileEnumerator(context, url, true /* recursive */)); - base::FilePath file_path_each; - std::stack<base::FilePath> directories; - while (!(file_path_each = file_enum->Next()).empty()) { - if (file_enum->IsDirectory()) { - directories.push(file_path_each); - } else { - PlatformFileError error = file_util->DeleteFile( - context, url.WithPath(file_path_each)); - if (error != base::PLATFORM_FILE_ERROR_NOT_FOUND && - error != base::PLATFORM_FILE_OK) - return error; - } - } - - while (!directories.empty()) { - PlatformFileError error = file_util->DeleteDirectory( - context, url.WithPath(directories.top())); - if (error != base::PLATFORM_FILE_ERROR_NOT_FOUND && - error != base::PLATFORM_FILE_OK) - return error; - directories.pop(); - } - return file_util->DeleteDirectory(context, url); -} - -} // namespace fileapi |