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/*
* Copyright 2009, 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.
*/
//
// TarGzGenerator generates a "tar.gz" byte stream.
// In other words, given a series of files, it will first create a tar archive
// from them, then apply gzip compression.
// This would be equivalent to using the "tar cf" command followed by "gzip"
//
// The normal usage is to call the AddFile() method for each file to add to the
// archive, then make one or more calls to AddFileBytes() to give the file's
// data. Then repeat this sequence for each file to be added. When done,
// call Finalize().
#ifndef O3D_IMPORT_CROSS_TARGZ_GENERATOR_H_
#define O3D_IMPORT_CROSS_TARGZ_GENERATOR_H_
#include <string>
#include "base/basictypes.h"
#include "core/cross/types.h"
#include "import/cross/gz_compressor.h"
#include "import/cross/iarchive_generator.h"
#include "import/cross/memory_stream.h"
#include "import/cross/tar_generator.h"
namespace o3d {
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
class TarGzGenerator : public IArchiveGenerator {
public:
// |callback_client| receives the tar.gz byte stream
explicit TarGzGenerator(StreamProcessor *callback_client);
// Call AddFile() for each file entry, followed by calls to AddFileBytes()
// for the file's data
virtual bool AddFile(const String &file_name,
size_t file_size);
// Call with the file's data (after calling AddFile)
// may be called one time with all the file's data, or multiple times
// until all the data is provided
virtual int AddFileBytes(MemoryReadStream *stream, size_t n);
int AddFileBytes(const uint8 *data, size_t n);
// Must call this after all files and file data have been written
virtual void Close(bool success);
private:
GzCompressor gz_compressor_;
TarGenerator tar_generator_;
DISALLOW_COPY_AND_ASSIGN(TarGzGenerator);
};
} // namespace o3d
#endif // O3D_IMPORT_CROSS_TARGZ_GENERATOR_H_
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