84 lines
1.6 KiB
ObjectPascal
84 lines
1.6 KiB
ObjectPascal
Unit AViewLZH;
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{$I M_OPS.PAS}
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Interface
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Uses
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Dos,
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AView;
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Type
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LFHeader = Record
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HeadSize,
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HeadChk : Byte;
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HeadID : Packed Array[1..5] of Char;
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PackSize,
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OrigSize,
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FileTime : LongInt;
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Attr : Word;
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FileName : String[12];
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F32 : String[255];
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DT : DateTime;
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End;
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PLzhArchive = ^TLzhArchive;
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TLzhArchive = Object(TGeneralArchive)
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Constructor Init;
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Procedure FindFirst (Var SR: ArcSearchRec); Virtual;
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Procedure FindNext (Var SR: ArcSearchRec); Virtual;
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Private
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_FHdr : LFHeader;
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_SL : LongInt;
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Procedure GetHeader (Var SR: ArcSearchRec);
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End;
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Implementation
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Constructor TLzhArchive.Init;
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Begin
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_SL := 0;
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FillChar (_FHdr,sizeof(_FHdr), 0);
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End;
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Procedure TLzhArchive.GetHeader (Var SR: ArcSearchRec);
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Var
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NR : LongInt;
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Begin
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FillChar (SR, SizeOf(SR), 0);
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Seek (ArcFile, _SL);
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If Eof(ArcFile) Then Exit;
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BlockRead (ArcFile, _FHdr, SizeOf(LFHeader), NR);
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If _FHdr.HeadSize = 0 Then Exit;
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Inc (_SL, _FHdr.HeadSize);
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Inc (_SL, 2);
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Inc (_SL, _FHdr.PackSize);
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If _FHdr.HeadSize <> 0 Then
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UnPackTime (_FHdr.FileTime, _FHdr.DT);
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If Pos(#0, _FHdr.FileName) > 0 Then
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SR.Name := Copy(_FHdr.FileName, 1, Pos(#0, _FHdr.FileName) - 1)
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Else
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SR.Name := _FHdr.FileName;
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SR.Size := _FHdr.OrigSize;
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SR.Time := _FHdr.FileTime;
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End;
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Procedure TLzhArchive.FindFirst (Var SR: ArcSearchRec);
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Begin
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GetHeader(SR);
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End;
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Procedure TLzhArchive.FindNext (Var SR: ArcSearchRec);
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Begin
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GetHeader(SR);
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End;
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End.
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