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97 lines
2.4 KiB
C++
Executable File
97 lines
2.4 KiB
C++
Executable File
// RarIn.h
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#pragma once
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#ifndef __ARCHIVE_RAR_IN_H
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#define __ARCHIVE_RAR_IN_H
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#include "Common/DynamicBuffer.h"
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#include "Common/Exception.h"
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#include "Common/MyCom.h"
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#include "../../IStream.h"
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#include "RarHeader.h"
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#include "RarItem.h"
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namespace NArchive {
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namespace NRar {
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class CInArchiveException
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{
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public:
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enum CCauseType
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{
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kUnexpectedEndOfArchive = 0,
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kArchiveHeaderCRCError,
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kFileHeaderCRCError,
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kIncorrectArchive,
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}
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Cause;
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CInArchiveException(CCauseType 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 StartPosition;
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WORD Flags;
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UINT64 CommentPosition;
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WORD CommentSize;
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bool IsSolid() const { return (Flags & NHeader::NArchive::kSolid) != 0; }
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bool IsCommented() const { return (Flags & NHeader::NArchive::kComment) != 0; }
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bool IsVolume() const { return (Flags & NHeader::NArchive::kVolume) != 0; }
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bool HaveNewVolumeName() const { return (Flags & NHeader::NArchive::kNewVolName) != 0; }
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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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UINT64 m_StreamStartPosition;
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UINT64 m_Position;
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UINT64 m_ArchiveStartPosition;
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NHeader::NArchive::CBlock m_ArchiveHeader;
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CDynamicBuffer<char> m_NameBuffer;
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CDynamicBuffer<wchar_t> _unicodeNameBuffer;
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bool m_SeekOnArchiveComment;
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UINT64 m_ArchiveCommentPosition;
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void ReadName(const BYTE *data, CItemEx &item, int nameSize);
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void ReadHeaderReal(const BYTE *data, CItemEx &item);
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HRESULT ReadBytes(void *data, UINT32 size, UINT32 *aProcessedSize);
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bool ReadBytesAndTestSize(void *data, UINT32 size);
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void ReadBytesAndTestResult(void *data, UINT32 size);
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bool FindAndReadMarker(const UINT64 *searchHeaderSizeLimit);
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void ThrowExceptionWithCode(CInArchiveException::CCauseType cause);
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void ThrowUnexpectedEndOfArchiveException();
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void AddToSeekValue(UINT64 addValue);
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protected:
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CDynamicBuffer<BYTE> m_FileHeaderData;
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NHeader::NBlock::CBlock m_BlockHeader;
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bool ReadMarkerAndArchiveHeader(const UINT64 *searchHeaderSizeLimit);
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public:
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bool Open(IInStream *inStream, const UINT64 *searchHeaderSizeLimit);
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void Close();
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bool GetNextItem(CItemEx &item);
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void SkipArchiveComment();
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void GetArchiveInfo(CInArchiveInfo &archiveInfo) const;
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void DirectGetBytes(void *data, UINT32 size);
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bool SeekInArchive(UINT64 position);
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ISequentialInStream *CreateLimitedStream(UINT64 position, UINT64 size);
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};
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}}
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#endif
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