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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.
*/
#ifndef O3D_IMPORT_CROSS_ARCHIVE_PROCESSOR_H_
#define O3D_IMPORT_CROSS_ARCHIVE_PROCESSOR_H_
#include <string>
#include "base/basictypes.h"
#include "import/cross/memory_stream.h"
namespace o3d {
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
class ArchiveFileInfo {
public:
ArchiveFileInfo(const std::string &filename, int file_size)
: filename_(filename), file_size_(file_size) {}
virtual ~ArchiveFileInfo() {}
const std::string &GetFileName() const { return filename_; }
int GetFileSize() const { return file_size_; }
private:
std::string filename_;
int file_size_;
DISALLOW_COPY_AND_ASSIGN(ArchiveFileInfo);
};
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
class ArchiveCallbackClient {
public:
virtual ~ArchiveCallbackClient() {}
virtual void ReceiveFileHeader(const ArchiveFileInfo &file_info) = 0;
virtual bool ReceiveFileData(MemoryReadStream *stream, int nbytes) = 0;
};
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
class ArchiveProcessor {
public:
explicit ArchiveProcessor(ArchiveCallbackClient *callback_client) {}
virtual ~ArchiveProcessor() {}
// Call to "push" bytes into the processor. They will be decompressed and
// the appropriate callbacks on |callback_client| will happen
// as files come in...
//
// Return values (using zlib error codes):
// Z_OK : Processing was successful - but not yet done
// Z_STREAM_END : We're done - archive is completely/successfully processed
// any other value indicates an error condition
//
// Note: even archive formats not based on zlib should use these codes
// (Z_OK, Z_STREAM_END)
//
virtual int ProcessCompressedBytes(MemoryReadStream *stream,
size_t bytes_to_process) = 0;
// Decompresses the complete file archive, making file callbacks as the files
// come in...
virtual int ProcessFile(const char *filename);
// Decompresses the complete archive from memory,
// making file callbacks as the files come in...
virtual int ProcessEntireStream(MemoryReadStream *stream);
protected:
DISALLOW_COPY_AND_ASSIGN(ArchiveProcessor);
};
#ifdef _DEBUG
// For debugging, report a zlib or i/o error
extern void zerr(int result);
#endif
} // namespace o3d
#endif // O3D_IMPORT_CROSS_ARCHIVE_PROCESSOR_H_
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