lzopfs/GzipFile.h at master · vasi/lzopfs

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#ifndef GZIPFILE_H

#define GZIPFILE_H

#include "lzopfs.h"

#include "CompressedFile.h"

#include "GzipReader.h"

#include "FileList.h"

class GzipFile : public IndexedCompFile {

protected:

struct GzipBlock : public Block {

size_t bits;

Buffer dict;

GzipBlock(off_t uoff, off_t coff, size_t b)

: Block(0, 0, uoff, coff), bits(b) { }

};

void setLastBlockSize(off_t uoff, off_t coff);

Buffer& addBlock(off_t uoff, off_t coff, size_t bits);

virtual void checkFileType(FileHandle &fh);

virtual void buildIndex(FileHandle& fh);

virtual Block* newBlock() const { return new GzipBlock(0, 0, 0); }

virtual bool readBlock(FileHandle& fh, Block* b); // True unless EOF

virtual void writeBlock(FileHandle& fh, const Block *b) const;

public:

static const size_t WindowSize;

static CompressedFile* open(const std::string& path, const OpenParams& params)

{ return new GzipFile(path, params); }

size_t mBlockFactor;

GzipFile(const std::string& path, const OpenParams& params);

virtual std::string destName() const;

virtual void decompressBlock(const FileHandle& fh, const Block& b,

Buffer& ubuf) const;

};

#endif // GZIPFILE_H