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71 lines
1.6 KiB
C++
71 lines
1.6 KiB
C++
#pragma once
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#include <string>
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#include <memory>
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#include "../Interface/Server.h"
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#include "../Interface/File.h"
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#include "LRUMemCache.h"
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class CompressedFile : public IFile, public ICacheEvictionCallback
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{
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public:
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CompressedFile(std::string pFilename, int pMode);
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CompressedFile(IFile* file, bool openExisting, bool readOnly);
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~CompressedFile();
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virtual std::string Read(_u32 tr, bool *has_error=NULL);
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virtual _u32 Read(char* buffer, _u32 bsize, bool *has_error=NULL);
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virtual _u32 Write(const std::string &tw, bool *has_error=NULL);
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virtual _u32 Write(const char* buffer, _u32 bsize, bool *has_error=NULL);
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virtual bool Seek(_i64 spos);
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virtual _i64 Size(void);
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virtual _i64 RealSize();
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virtual bool PunchHole( _i64 spos, _i64 size );
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virtual std::string getFilename(void);
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virtual bool Sync();
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bool hasError();
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bool finish();
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bool hasNoMagic();
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private:
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void readHeader(bool *has_error);
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void readIndex(bool *has_error);
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bool fillCache(__int64 offset, bool errorMsg, bool *has_error);
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virtual void evictFromLruCache(const SCacheItem& item);
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void writeHeader();
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void writeIndex();
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_u32 readFromFile(char* buffer, _u32 bsize, bool *has_error);
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_u32 writeToFile(const char* buffer, _u32 bsize);
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__int64 filesize;
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__int64 index_offset;
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_u32 blocksize;
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__int64 currentPosition;
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std::vector<__int64> blockOffsets;
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IFile* uncompressedFile;
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std::auto_ptr<LRUMemCache> hotCache;
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std::vector<char> compressedBuffer;
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bool error;
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bool finished;
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bool readOnly;
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bool noMagic;
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};
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