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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#ifndef _BUFFERED_ARCHIVE_H
#define _BUFFERED_ARCHIVE_H
#include <map>
#include <boost/thread/mutex.hpp>
#include "IArchive.h"
/**
* Provides a helper implementation for archive types that can only uncompress
* one file to memory at a time.
*/
class CBufferedArchive : public IArchive
{
public:
CBufferedArchive(const std::string& name, bool cache = true);
virtual ~CBufferedArchive();
virtual bool GetFile(unsigned int fid, std::vector<boost::uint8_t>& buffer);
protected:
virtual bool GetFileImpl(unsigned int fid, std::vector<boost::uint8_t>& buffer) = 0;
boost::mutex archiveLock; // neither 7zip nor zlib are threadsafe
struct FileBuffer
{
FileBuffer() : populated(false), exists(false) {};
bool populated; // cause a file may be 0 bytes big
bool exists;
std::vector<boost::uint8_t> data;
};
std::vector<FileBuffer> cache; // cache[fileId]
private:
bool caching;
};
#endif // _BUFFERED_ARCHIVE_H
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