archhap.pas

{/////////////////////////////////////////////////////////////////////////
//
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//////////////////////////////////////////////////////////////////////////}
{$I STDEFINE.INC}
unit archHAP; {HAP}

interface

uses
  Archiver, Advance, Advance1, Defines, Objects2, Streams, Dos
  ;

type
  PHAPArchive = ^THAPArchive;
  THAPArchive = object(TARJArchive)
    constructor Init;
    procedure GetFile; virtual;
    function GetID: Byte; virtual;
    function GetSign: TStr4; virtual;
    end;

type
  HAPHdr = record
    C: Char;
    Id: LongInt;
    PackedSize: LongInt;
    Reserved: array[1..9] of Byte;
    Attr: Byte;
    Date: LongInt;
    OriginSize: LongInt;
    end;

implementation

{ ----------------------------- HAP ------------------------------------}

constructor THAPArchive.Init;
  var
    Sign: TStr5;
    q: String;
  begin
  Sign := GetSign;
  SetLength(Sign, Length(Sign)-1);
  Sign := Sign+#0;
  FreeStr := SourceDir+DNARC;
  TObject.Init;
  Packer := NewStr(GetVal(@Sign[1], @FreeStr[1], PPacker, 'HAP3'));
  UnPacker := NewStr(GetVal(@Sign[1], @FreeStr[1], PUnPacker, 'PAH3'));
  Extract := NewStr(GetVal(@Sign[1], @FreeStr[1], PExtract, 'e'));
  ExtractWP := NewStr(GetVal(@Sign[1], @FreeStr[1], PExtractWP, 'x'));
  Add := NewStr(GetVal(@Sign[1], @FreeStr[1], PAdd, 'a'));
  Move := NewStr(GetVal(@Sign[1], @FreeStr[1], PMove, 'a'));
  Delete := NewStr(GetVal(@Sign[1], @FreeStr[1], PDelete, 'd'));
  Garble := NewStr(GetVal(@Sign[1], @FreeStr[1], PGarble, ''));
  Test := NewStr(GetVal(@Sign[1], @FreeStr[1], PTest, 't'));
  IncludePaths := NewStr(GetVal(@Sign[1], @FreeStr[1], PIncludePaths, ''));
  ExcludePaths := NewStr(GetVal(@Sign[1], @FreeStr[1], PExcludePaths, ''));
  ForceMode := NewStr(GetVal(@Sign[1], @FreeStr[1], PForceMode, ''));
  RecoveryRec := NewStr(GetVal(@Sign[1], @FreeStr[1], PRecoveryRec, ''));
  SelfExtract := NewStr(GetVal(@Sign[1], @FreeStr[1], PSelfExtract, ''));
  Solid := NewStr(GetVal(@Sign[1], @FreeStr[1], PSolid, ''));
  RecurseSubDirs := NewStr(GetVal(@Sign[1], @FreeStr[1], PRecurseSubDirs,
         ''));
  SetPathInside := NewStr(GetVal(@Sign[1], @FreeStr[1], PSetPathInside,
         ''));
  StoreCompression := NewStr(GetVal(@Sign[1], @FreeStr[1],
         PStoreCompression, ''));
  FastestCompression := NewStr(GetVal(@Sign[1], @FreeStr[1],
         PFastestCompression, ''));
  FastCompression := NewStr(GetVal(@Sign[1], @FreeStr[1],
         PFastCompression, ''));
  NormalCompression := NewStr(GetVal(@Sign[1], @FreeStr[1],
         PNormalCompression, ''));
  GoodCompression := NewStr(GetVal(@Sign[1], @FreeStr[1],
         PGoodCompression, ''));
  UltraCompression := NewStr(GetVal(@Sign[1], @FreeStr[1],
         PUltraCompression, ''));
  ComprListChar := NewStr(GetVal(@Sign[1], @FreeStr[1], PComprListChar,
         ' '));
  ExtrListChar := NewStr(GetVal(@Sign[1], @FreeStr[1], PExtrListChar,
       ' '));

  q := GetVal(@Sign[1], @FreeStr[1], PAllVersion, '0');
  AllVersion := q <> '0';
  q := GetVal(@Sign[1], @FreeStr[1], PPutDirs, '0');
  PutDirs := q <> '0';
  {$IFNDEF DPMI32}
  q := GetVal(@Sign[1], @FreeStr[1], PShortCmdLine, '1');
  ShortCmdLine := q <> '0';
  {$ELSE}
  q := GetVal(@Sign[1], @FreeStr[1], PSwapWhenExec, '0');
  SwapWhenExec := q <> '0';
  {$ENDIF}
  {$IFNDEF OS2}
  q := GetVal(@Sign[1], @FreeStr[1], PUseLFN, '0');
  UseLFN := q <> '0';
  {$ENDIF}
  end { THAPArchive.Init };

function THAPArchive.GetID;
  begin
  GetID := arcHAP;
  end;

function THAPArchive.GetSign;
  begin
  GetSign := sigHAP;
  end;

procedure THAPArchive.GetFile;
  var
    P: HAPHdr;
    C: Char;
  begin
  ArcFile^.Read(P, 1);
  if  (ArcFile^.GetPos = ArcFile^.GetSize) then
    begin
    FileInfo.Last := 1;
    Exit;
    end;
  ArcFile^.Read(P.Id, SizeOf(P)-1);
  if  (ArcFile^.Status <> stOK) or (P.Id <> $574a688e {#142#104#74#87})
  then
    begin
    FileInfo.Last := 2;
    Exit;
    end;
  {if (P.Method > 20) then begin FileInfo.Last:=2;Exit;end;}
  FileInfo.Last := 0;
  FileInfo.Attr := P.Attr and not Hidden;
  FileInfo.USize := P.OriginSize;
  FileInfo.PSize := P.PackedSize;
  FileInfo.Date := P.Date;
  FileInfo.FName := '';
  repeat
    ArcFile^.Read(C, 1);
    if C <> #0 then
      FileInfo.FName := FileInfo.FName+C;
  until (C = #0) or (Length(FileInfo.FName) > 77);
  repeat
    ArcFile^.Read(C, 1);
  until (C in [#$15, #$16]) or (ArcFile^.Status <> stOK);
  if  (ArcFile^.Status <> stOK) or (Length(FileInfo.FName) > 79) then
    begin
    FileInfo.Last := 2;
    Exit;
    end;
  ArcFile^.Seek(ArcFile^.GetPos+P.PackedSize-1);
  end { THAPArchive.GetFile };

end.