355 lines
10 KiB
ObjectPascal
355 lines
10 KiB
ObjectPascal
{
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$Project$
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$Workfile$
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$Revision$
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$DateUTC$
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$Id$
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This file is part of the Indy (Internet Direct) project, and is offered
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under the dual-licensing agreement described on the Indy website.
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(http://www.indyproject.org/)
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Copyright:
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(c) 1993-2005, Chad Z. Hower and the Indy Pit Crew. All rights reserved.
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}
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{
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$Log$
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}
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{
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Rev 1.5 10/26/2004 9:46:34 PM JPMugaas
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Updated refs.
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Rev 1.4 4/19/2004 5:05:48 PM JPMugaas
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Class rework Kudzu wanted.
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Rev 1.3 2004.02.03 5:45:28 PM czhower
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Name changes
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Rev 1.2 10/19/2003 2:27:22 PM DSiders
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Added localization comments.
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Rev 1.1 4/7/2003 04:03:52 PM JPMugaas
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User can now descover what output a parser may give.
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Rev 1.0 2/19/2003 05:51:24 PM JPMugaas
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Parsers ported from old framework.
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}
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unit IdFTPListParseMPEiX;
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interface
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{$i IdCompilerDefines.inc}
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uses
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Classes,
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IdGlobal,
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IdFTPList, IdFTPListParseBase, IdFTPListTypes;
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type
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TIdMPiXFTPListItem = class(TIdRecFTPListItem)
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protected
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FLimit : UInt32;
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public
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constructor Create(AOwner: TCollection); override;
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property RecLength;
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property RecFormat;
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property NumberRecs;
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property Limit : UInt32 read FLimit write FLimit;
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end;
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//Anscestor for the MPE/iX Parsers
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//This is necessary because they both have a second line a function parses
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//Do not register this one
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TIdFTPLPMPiXBase = class(TIdFTPListBaseHeader)
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protected
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class function MakeNewItem(AOwner : TIdFTPListItems) : TIdFTPListItem; override;
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class function IsSecondHeader(ACols: TStrings): Boolean; virtual;
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public
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class function GetIdent : String; override;
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end;
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TIdFTPLPMPiX = class(TIdFTPLPMPiXBase)
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protected
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class function ParseLine(const AItem : TIdFTPListItem; const APath : String = ''): Boolean; override;
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class function IsHeader(const AData: String): Boolean; override;
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public
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class function GetIdent : String; override;
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end;
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TIdFTPLPMPiXWithPOSIX = class(TIdFTPLPMPiXBase)
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protected
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class function ParseLine(const AItem : TIdFTPListItem; const APath : String = ''): Boolean; override;
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class function IsHeader(const AData: String): Boolean; override;
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public
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class function GetIdent : String; override;
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end;
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// RLebeau 2/14/09: this forces C++Builder to link to this unit so
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// RegisterFTPListParser can be called correctly at program startup...
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{$IFDEF HAS_DIRECTIVE_HPPEMIT_LINKUNIT}
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{$HPPEMIT LINKUNIT}
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{$ELSE}
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{$HPPEMIT '#pragma link "IdFTPListParseMPEiX"'}
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{$ENDIF}
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implementation
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uses
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IdFTPCommon, IdGlobalProtocols, IdStrings, SysUtils;
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{ TIdFTPLPMPiXBase }
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class function TIdFTPLPMPiXBase.GetIdent: String;
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begin
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Result := 'MPE/iX: '; {do not localize}
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end;
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class function TIdFTPLPMPiXBase.IsSecondHeader(ACols: TStrings): Boolean;
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begin
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Result := (ACols.Count > 3) and
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(ACols[0] = 'SIZE') and {do not localize}
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(ACols[1] = 'TYP') and {do not localize}
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(ACols[2] = 'EOF') and {do not localize}
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(ACols[3] = 'LIMIT'); {do not localize}
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if Result and (ACols.Count = 8) then
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begin
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Result := (ACols[4] = 'R/B') and {do not localize}
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(ACols[5] = 'SECTORS') and {do not localize}
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(ACols[6] = '#X') and {do not localize}
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(ACols[7] = 'MX') {do not localize}
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end;
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{
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This is for a Not Found banner such as:
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"@ not found"
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"./@ not found"
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}
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if (not Result) and (ACols.Count = 3) then
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begin
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Result := (IndyPos('@', ACols[0]) > 0) and
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(ACols[1] = 'not') and {do not localize}
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(ACols[2] = 'found'); {do not localize}
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end;
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end;
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class function TIdFTPLPMPiXBase.MakeNewItem(AOwner: TIdFTPListItems): TIdFTPListItem;
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begin
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Result := TIdMPiXFTPListItem.Create(AOwner);
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end;
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{ TIdFTPLPMPiX }
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class function TIdFTPLPMPiX.GetIdent: String;
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begin
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Result := inherited GetIdent + 'LISTF'; {do not localize}
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end;
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class function TIdFTPLPMPiX.IsHeader(const AData: String): Boolean;
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var
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LCols : TStrings;
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LAccP, LGrpP : Integer;
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begin
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LAccP := IndyPos('ACCOUNT=', AData); {do not localize}
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if LAccP = 0 then begin
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LAccP := IndyPos('ACCOUNT =', AData); {do not localize}
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end;
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LGrpP := IndyPos('GROUP=', AData); {do not localize}
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if LGrpP = 0 then begin
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LGrpP := IndyPos('GROUP =', AData); {do not localize}
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end;
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Result := (LAccP > 0) and (LGrpP > LAccP);
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if not Result then
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begin
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LCols := TStringList.Create;
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try
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SplitDelimitedString(ReplaceAll(AData, '-', ' '), LCols, True);
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Result := (LCols.Count > 3) and
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(LCols[0] = 'FILENAME') and {do not localize}
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(LCols[1] = 'CODE') and {do not localize}
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(LCols[2] = 'LOGICAL') and {do not localize}
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(LCols[3] = 'RECORD'); {do not localize}
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if Result and (LCols.Count = 5) then begin
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Result := (LCols[4] = 'SPACE'); {do not localize}
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end;
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if not Result then begin
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Result := IsSecondHeader(LCols);
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end;
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finally
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FreeAndNil(LCols);
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end;
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end;
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end;
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class function TIdFTPLPMPiX.ParseLine(const AItem: TIdFTPListItem;
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const APath: String): Boolean;
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var
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LCols : TStrings;
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LBuf : String;
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LI : TIdMPiXFTPListItem;
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begin
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LI := AItem as TIdMPiXFTPListItem;
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LCols := TStringList.Create;
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try
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//According to "HP ARPA File Transfer Protocol, User’s Guide, HP 3000 MPE/iX Computer Systems,Edition 6"
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//the filename here can be 8 chars long
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LI.FileName := Trim(Copy(AItem.Data, 1, 8));
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LBuf := Copy(AItem.Data, 8, MaxInt);
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if (Length(LBuf) > 0) and (LBuf[1] <> ' ') then begin
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Fetch(LBuf);
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end;
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SplitDelimitedString(LBuf, LCols, True);
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if LCols.Count > 1 then begin
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LI.Size := ExtractNumber(LCols[1]);
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end;
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//Type
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if LCols.Count > 2 then begin
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LI.RecFormat := LCols[2];
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end;
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//record COunt - EOF
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if LCols.Count > 3 then begin
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LI.NumberRecs := IndyStrToInt64(LCols[3], 0);
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end;
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//Limit
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if LCols.Count > 4 then begin
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LI.Limit := IndyStrToInt64(LCols[4], 0);
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end;
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{
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HP3000 is a flat file system where there are no
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subdirs. There is a file group created by the user
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but that is mroe logical than anything. There might
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be a command for obtaining file groups but I have not
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seen one. Note that file groups can not obtain other groups.
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}
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LI.ItemType := ditFile;
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{
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Note that HP3000 does not give you the date at all.
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}
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LI.ModifiedAvail := False;
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finally
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FreeAndNil(LCols);
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end;
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Result := True;
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end;
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{ TIdFTPLPMPiXWithPOSIX }
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class function TIdFTPLPMPiXWithPOSIX.GetIdent: String;
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begin
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Result := inherited GetIdent + 'With POSIX'; {do not localize}
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end;
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class function TIdFTPLPMPiXWithPOSIX.IsHeader(const AData: String): Boolean;
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var
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LCols : TStrings;
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begin
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{
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Often is something like this (spacing may very):
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==
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PATH= /PH/SAPHP/
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CODE ------------LOGICAL RECORD----------- ----SPACE---- FILENAME
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SIZE TYP EOF LIMIT R/B SECTORS #X MX
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==
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or maybe this:
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===
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ACCOUNT= SYS GROUP= WORK
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FILENAME CODE ------------LOGICAL RECORD----------- ----SPACE----
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===
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}
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Result := IndyPos('PATH=', AData) > 0; {do not localize}
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if not Result then
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begin
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LCols := TStringList.Create;
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try
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SplitDelimitedString(ReplaceAll(AData, '-', ' '), LCols, True);
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Result := (LCols.Count = 5) and
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(LCols[0] = 'CODE') and {do not localize}
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(LCols[1] = 'LOGICAL') and {do not localize}
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(LCols[2] = 'RECORD') and {do not localize}
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(LCols[3] = 'SPACE') and {do not localize}
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(LCols[4] = 'FILENAME'); {do not localize}
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if not Result then begin
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Result := IsSecondHeader(LCols);
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end;
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finally
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FreeAndNil(LCols);
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end;
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end;
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end;
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class function TIdFTPLPMPiXWithPOSIX.ParseLine(const AItem: TIdFTPListItem;
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const APath: String): Boolean;
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var
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LCols : TStrings;
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LI : TIdMPiXFTPListItem;
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begin
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LI := AItem as TIdMPiXFTPListItem;
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LCols := TStringList.Create;
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try
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SplitDelimitedString(AItem.Data, LCols, True);
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if LCols.Count > 0 then begin
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LI.Size := ExtractNumber(LCols[0]);
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end;
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if LCols.Count > 1 then begin
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LI.RecFormat := LCols[1];
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end;
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if LCols.Count > 2 then begin
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LI.NumberRecs := IndyStrToInt64(LCols[2], 0);
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end;
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if LCols.Count > 3 then begin
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LI.Limit := IndyStrToInt64(LCols[3], 0);
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end;
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if LCols.Count > 8 then begin
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LI.FileName := LCols[8];
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end;
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{
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The original HP3000 is a flat file system where there are no
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subdirs. There is a file group created by the user
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but that is more logical than anything. There might
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be a command for obtaining file groups but I have not
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seen one. Note that file groups can not obtain other groups.
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More recent versions of HP3000 have Posix support including a
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hierarchical file system. Verified with test at:
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jazz.external.hp.com
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}
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if TextEndsWith(LI.FileName, '/') then
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begin
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LI.ItemType := ditDirectory;
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LI.FileName := Copy(AItem.FileName, 1, Length(LI.FileName) - 1);
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end else begin
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LI.ItemType := ditFile;
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end;
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{
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Note that HP3000 does not give you the date at all.
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}
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finally
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FreeAndNil(LCols);
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end;
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Result := True;
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end;
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{ TIdMPiXFTPListItem }
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constructor TIdMPiXFTPListItem.Create(AOwner: TCollection);
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begin
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inherited Create(AOwner);
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//MP/iX or HP3000 will not give you a modified date at all
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ModifiedAvail := False;
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end;
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initialization
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RegisterFTPListParser(TIdFTPLPMPiX);
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RegisterFTPListParser(TIdFTPLPMPiXWithPOSIX);
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finalization
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UnRegisterFTPListParser(TIdFTPLPMPiX);
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UnRegisterFTPListParser(TIdFTPLPMPiXWithPOSIX);
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end.
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