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// Copyright 2008, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#ifndef CHROME_BROWSER_SAVE_FILE_H__
#define CHROME_BROWSER_SAVE_FILE_H__
#include <string>
#include "base/basictypes.h"
#include "base/scoped_ptr.h"
#include "chrome/browser/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, int 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 std::wstring& 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_; }
std::wstring 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 wchar_t* 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.
std::wstring 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_EVIL_CONSTRUCTORS(SaveFile);
};
#endif // CHROME_BROWSER_SAVE_FILE_H__
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