58 lines
1.7 KiB
C++
Vendored
58 lines
1.7 KiB
C++
Vendored
/* Copyright (C) Teemu Suutari */
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#ifndef DEFLATEDECOMPRESSOR_HPP
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#define DEFLATEDECOMPRESSOR_HPP
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#include "Decompressor.hpp"
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#include "XPKDecompressor.hpp"
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namespace ancient::internal
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{
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class DEFLATEDecompressor : public Decompressor, public XPKDecompressor
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{
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public:
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DEFLATEDecompressor(const Buffer &packedData,bool exactSizeKnown,bool verify);
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DEFLATEDecompressor(uint32_t hdr,uint32_t recursionLevel,const Buffer &packedData,std::shared_ptr<XPKDecompressor::State> &state,bool verify);
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DEFLATEDecompressor(const Buffer &packedData,size_t packedSize,size_t rawSize,bool isZlib,bool verify,bool deflate64); // zlib or completely raw stream
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virtual ~DEFLATEDecompressor();
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virtual size_t getRawSize() const noexcept override final;
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virtual size_t getPackedSize() const noexcept override final;
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virtual const std::string &getName() const noexcept override final;
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virtual const std::string &getSubName() const noexcept override final;
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virtual void decompressImpl(Buffer &rawData,bool verify) override final;
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virtual void decompressImpl(Buffer &rawData,const Buffer &previousData,bool verify) override final;
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static bool detectHeader(uint32_t hdr) noexcept;
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static bool detectHeaderXPK(uint32_t hdr) noexcept;
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static std::shared_ptr<Decompressor> create(const Buffer &packedData,bool exactSizeKnown,bool verify);
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static std::shared_ptr<XPKDecompressor> create(uint32_t hdr,uint32_t recursionLevel,const Buffer &packedData,std::shared_ptr<XPKDecompressor::State> &state,bool verify);
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private:
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bool detectZLib();
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enum class Type
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{
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GZIP=0,
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ZLib,
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Raw
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};
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const Buffer &_packedData;
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size_t _packedSize=0;
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size_t _packedOffset=0;
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size_t _rawSize=0;
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Type _type;
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bool _exactSizeKnown=true;
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bool _deflate64=false;
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};
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}
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#endif
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