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113 lines
2.8 KiB
C++
Executable File
113 lines
2.8 KiB
C++
Executable File
// Archive/ZipIn.h
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#ifndef __ZIP_IN_H
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#define __ZIP_IN_H
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#include "Common/MyCom.h"
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#include "../../IStream.h"
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#include "ZipHeader.h"
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#include "ZipItemEx.h"
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namespace NArchive {
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namespace NZip {
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class CInArchiveException
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{
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public:
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enum ECauseType
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{
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kUnexpectedEndOfArchive = 0,
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kArchiceHeaderCRCError,
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kFileHeaderCRCError,
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kIncorrectArchive,
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kDataDescroptorsAreNotSupported,
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kMultiVolumeArchiveAreNotSupported,
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kReadStreamError,
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kSeekStreamError
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}
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Cause;
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CInArchiveException(ECauseType cause): Cause(cause) {}
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};
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class CInArchiveInfo
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{
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public:
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UInt64 Base;
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UInt64 StartPosition;
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CByteBuffer Comment;
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CInArchiveInfo(): Base(0), StartPosition(0) {}
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void Clear()
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{
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Base = 0;
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StartPosition = 0;
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Comment.SetCapacity(0);
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}
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};
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class CProgressVirt
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{
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public:
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STDMETHOD(SetCompleted)(const UInt64 *numFiles) PURE;
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};
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struct CCdInfo
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{
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// UInt64 NumEntries;
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UInt64 Size;
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UInt64 Offset;
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};
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class CInArchive
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{
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CMyComPtr<IInStream> m_Stream;
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UInt32 m_Signature;
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UInt64 m_StreamStartPosition;
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UInt64 m_Position;
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AString m_NameBuffer;
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HRESULT Seek(UInt64 offset);
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bool FindAndReadMarker(const UInt64 *searchHeaderSizeLimit);
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bool ReadUInt32(UInt32 &signature);
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AString ReadFileName(UInt32 nameSize);
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HRESULT ReadBytes(void *data, UInt32 size, UInt32 *processedSize);
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bool ReadBytesAndTestSize(void *data, UInt32 size);
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void SafeReadBytes(void *data, UInt32 size);
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void ReadBuffer(CByteBuffer &buffer, UInt32 size);
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Byte ReadByte();
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UInt16 ReadUInt16();
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UInt32 ReadUInt32();
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UInt64 ReadUInt64();
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void IncreaseRealPosition(UInt64 addValue);
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void ReadExtra(UInt32 extraSize, CExtraBlock &extraBlock,
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UInt64 &unpackSize, UInt64 &packSize, UInt64 &localHeaderOffset, UInt32 &diskStartNumber);
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HRESULT ReadLocalItem(CItemEx &item);
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HRESULT ReadLocalItemDescriptor(CItemEx &item);
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HRESULT ReadCdItem(CItemEx &item);
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HRESULT TryEcd64(UInt64 offset, CCdInfo &cdInfo);
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HRESULT FindCd(CCdInfo &cdInfo);
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HRESULT TryReadCd(CObjectVector<CItemEx> &items, UInt64 cdOffset, UInt64 cdSize);
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HRESULT ReadCd(CObjectVector<CItemEx> &items, UInt64 &cdOffset, UInt64 &cdSize);
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HRESULT ReadLocalsAndCd(CObjectVector<CItemEx> &items, CProgressVirt *progress, UInt64 &cdOffset);
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public:
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CInArchiveInfo m_ArchiveInfo;
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HRESULT ReadHeaders(CObjectVector<CItemEx> &items, CProgressVirt *progress);
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HRESULT ReadLocalItemAfterCdItem(CItemEx &item);
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HRESULT ReadLocalItemAfterCdItemFull(CItemEx &item);
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bool Open(IInStream *inStream, const UInt64 *searchHeaderSizeLimit);
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void Close();
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void GetArchiveInfo(CInArchiveInfo &archiveInfo) const;
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bool SeekInArchive(UInt64 position);
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ISequentialInStream *CreateLimitedStream(UInt64 position, UInt64 size);
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IInStream* CreateStream();
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};
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}}
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#endif
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