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// Copyright 2013 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef STORAGE_BROWSER_FILE_SYSTEM_ASYNC_FILE_UTIL_ADAPTER_H_
#define STORAGE_BROWSER_FILE_SYSTEM_ASYNC_FILE_UTIL_ADAPTER_H_
#include <stdint.h>
#include <memory>
#include "base/component_export.h"
#include "base/memory/ptr_util.h"
#include "storage/browser/file_system/async_file_util.h"
namespace storage {
class FileSystemFileUtil;
// An adapter class for FileSystemFileUtil classes to provide asynchronous
// interface.
//
// A filesystem can do either:
// - implement a synchronous version of FileUtil by extending
// FileSystemFileUtil and atach it to this adapter, or
// - directly implement AsyncFileUtil.
//
// This instance (as thus this->sync_file_util_) is guaranteed to be alive
// as far as FileSystemOperationContext given to each operation is kept alive.
class COMPONENT_EXPORT(STORAGE_BROWSER) AsyncFileUtilAdapter
: public AsyncFileUtil {
public:
explicit AsyncFileUtilAdapter(
std::unique_ptr<FileSystemFileUtil> sync_file_util);
AsyncFileUtilAdapter(const AsyncFileUtilAdapter&) = delete;
AsyncFileUtilAdapter& operator=(const AsyncFileUtilAdapter&) = delete;
~AsyncFileUtilAdapter() override;
FileSystemFileUtil* sync_file_util() { return sync_file_util_.get(); }
// AsyncFileUtil overrides.
void CreateOrOpen(std::unique_ptr<FileSystemOperationContext> context,
const FileSystemURL& url,
uint32_t file_flags,
CreateOrOpenCallback callback) override;
void EnsureFileExists(std::unique_ptr<FileSystemOperationContext> context,
const FileSystemURL& url,
EnsureFileExistsCallback callback) override;
void CreateDirectory(std::unique_ptr<FileSystemOperationContext> context,
const FileSystemURL& url,
bool exclusive,
bool recursive,
StatusCallback callback) override;
void GetFileInfo(std::unique_ptr<FileSystemOperationContext> context,
const FileSystemURL& url,
GetMetadataFieldSet fields,
GetFileInfoCallback callback) override;
void ReadDirectory(std::unique_ptr<FileSystemOperationContext> context,
const FileSystemURL& url,
ReadDirectoryCallback callback) override;
void Touch(std::unique_ptr<FileSystemOperationContext> context,
const FileSystemURL& url,
const base::Time& last_access_time,
const base::Time& last_modified_time,
StatusCallback callback) override;
void Truncate(std::unique_ptr<FileSystemOperationContext> context,
const FileSystemURL& url,
int64_t length,
StatusCallback callback) override;
void CopyFileLocal(std::unique_ptr<FileSystemOperationContext> context,
const FileSystemURL& src_url,
const FileSystemURL& dest_url,
CopyOrMoveOptionSet options,
CopyFileProgressCallback progress_callback,
StatusCallback callback) override;
void MoveFileLocal(std::unique_ptr<FileSystemOperationContext> context,
const FileSystemURL& src_url,
const FileSystemURL& dest_url,
CopyOrMoveOptionSet options,
StatusCallback callback) override;
void CopyInForeignFile(std::unique_ptr<FileSystemOperationContext> context,
const base::FilePath& src_file_path,
const FileSystemURL& dest_url,
StatusCallback callback) override;
void DeleteFile(std::unique_ptr<FileSystemOperationContext> context,
const FileSystemURL& url,
StatusCallback callback) override;
void DeleteDirectory(std::unique_ptr<FileSystemOperationContext> context,
const FileSystemURL& url,
StatusCallback callback) override;
void DeleteRecursively(std::unique_ptr<FileSystemOperationContext> context,
const FileSystemURL& url,
StatusCallback callback) override;
void CreateSnapshotFile(std::unique_ptr<FileSystemOperationContext> context,
const FileSystemURL& url,
CreateSnapshotFileCallback callback) override;
private:
std::unique_ptr<FileSystemFileUtil> sync_file_util_;
};
} // namespace storage
#endif // STORAGE_BROWSER_FILE_SYSTEM_ASYNC_FILE_UTIL_ADAPTER_H_
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