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// 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 CHROME_BROWSER_DOWNLOAD_SAVE_FILE_H__
#define CHROME_BROWSER_DOWNLOAD_SAVE_FILE_H__
#include "base/basictypes.h"
#include "base/file_path.h"
#include "base/scoped_ptr.h"
#include "chrome/browser/download/save_types.h"
// SaveFile ----------------------------------------------------------------
// These objects live exclusively on the file thread and handle the writing
// operations for one save item. These objects live only for the duration that
// the saving job is 'in progress': once the saving job has been completed or
// canceled, the SaveFile is destroyed. One SaveFile object represents one item
// in a save session.
class SaveFile {
public:
explicit SaveFile(const SaveFileCreateInfo* info);
~SaveFile();
// Write a new chunk of data to the file. Returns true on success.
bool AppendDataToFile(const char* data, size_t data_len);
// Abort the saving job and automatically close the file.
void Cancel();
// Rename the saved file. Returns 'true' if the rename was successful.
bool Rename(const FilePath& full_path);
void Finish();
// Accessors.
int save_id() const { return info_->save_id; }
int render_process_id() const { return info_->render_process_id; }
int render_view_id() const { return info_->render_view_id; }
int request_id() const { return info_->request_id; }
SaveFileCreateInfo::SaveFileSource save_source() const {
return info_->save_source;
}
int64 bytes_so_far() const { return bytes_so_far_; }
FilePath full_path() const { return full_path_; }
bool path_renamed() const { return path_renamed_; }
bool in_progress() const { return in_progress_; }
private:
// Open or Close the OS file handle. The file is opened in the constructor
// based on creation information passed to it, and automatically closed in
// the destructor.
void Close();
bool Open(const char* open_mode);
scoped_ptr<const SaveFileCreateInfo> info_;
// OS file handle for writing
FILE* file_;
// Amount of data received up to this point. We may not know in advance how
// much data to expect since some servers don't provide that information.
int64 bytes_so_far_;
// Full path to the saved file including the file name.
FilePath full_path_;
// Whether the saved file is still using its initial temporary path.
bool path_renamed_;
// Whether the saved file is still receiving data.
bool in_progress_;
DISALLOW_COPY_AND_ASSIGN(SaveFile);
};
#endif // CHROME_BROWSER_DOWNLOAD_SAVE_FILE_H__
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