restemplate/indy/Protocols/IdFTPListParseTOPS20.pas

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{
$Project$
$Workfile$
$Revision$
$DateUTC$
$Id$
This file is part of the Indy (Internet Direct) project, and is offered
under the dual-licensing agreement described on the Indy website.
(http://www.indyproject.org/)
Copyright:
(c) 1993-2005, Chad Z. Hower and the Indy Pit Crew. All rights reserved.
}
{
$Log$
}
{
Rev 1.13 2/5/2005 12:33:46 PM JPMugaas
A bug was causing a false positive for TOPS20 for a Windows NT directory
listing only containing one folder.
Rev 1.12 2/3/2005 11:26:50 PM JPMugaas
Fix for DotNET problem.
Rev 1.11 12/8/2004 8:35:18 AM JPMugaas
Minor class restructure to support Unisys ClearPath.
Rev 1.10 11/30/2004 12:14:46 PM JPMugaas
Compiler error in DotNET.
Rev 1.9 11/26/2004 3:14:14 PM JPMugaas
TOPS20 parser was causing a false positive with a WindowsNT machine. The fix
is detect a space in a file listing (that should not happen with one form of
the TOPS20 listing).
Rev 1.8 11/22/2004 7:43:46 PM JPMugaas
Changed LocalFile property for directories to drop the .DIRECTORY extension
and build number. You don't use those with a CD command.
Rev 1.7 11/20/2004 2:39:02 PM JPMugaas
Now works at twenex.org. That system is odd because it doesn't support the
SYST command so you have to parse the directory.
Rev 1.6 10/26/2004 9:55:58 PM JPMugaas
Updated refs.
Rev 1.5 6/5/2004 7:48:56 PM JPMugaas
In TOPS32, a FTP dir listing will often not contain dates or times. It's
usually just the name.
Rev 1.4 4/19/2004 5:05:44 PM JPMugaas
Class rework Kudzu wanted.
Rev 1.3 2004.02.03 5:45:26 PM czhower
Name changes
Rev 1.2 10/19/2003 3:36:22 PM DSiders
Added localization comments.
Rev 1.1 4/7/2003 04:04:18 PM JPMugaas
User can now descover what output a parser may give.
Rev 1.0 2/19/2003 05:49:58 PM JPMugaas
Parsers ported from old framework.
}
unit IdFTPListParseTOPS20;
interface
{$i IdCompilerDefines.inc}
uses
Classes,
IdFTPList, IdFTPListParseBase, IdFTPListTypes;
type
TIdTOPS20FTPListItem = class(TIdCreationDateFTPListItem);
TIdFTPLPTOPS20 = class(TIdFTPListBase)
protected
class function MakeNewItem(AOwner : TIdFTPListItems) : TIdFTPListItem; override;
class function ParseLine(const AItem : TIdFTPListItem; const APath : String = ''): Boolean; override;
public
class function GetIdent : String; override;
class function CheckListing(AListing : TStrings; const ASysDescript : String = ''; const ADetails : Boolean = True): Boolean; override;
end;
const
TOPS20_VOLPATH_SEP = ':<'; {do not localize}
TOPS20_DIRFILE_SEP = '>'; {do not localize}
// RLebeau 2/14/09: this forces C++Builder to link to this unit so
// RegisterFTPListParser can be called correctly at program startup...
{$IFDEF HAS_DIRECTIVE_HPPEMIT_LINKUNIT}
{$HPPEMIT LINKUNIT}
{$ELSE}
{$HPPEMIT '#pragma link "IdFTPListParseTOPS20"'}
{$ENDIF}
implementation
uses
IdGlobal, IdFTPCommon, IdGlobalProtocols, SysUtils;
{ TIdFTPLPTOPS20 }
class function TIdFTPLPTOPS20.CheckListing(AListing: TStrings;
const ASysDescript: String; const ADetails: Boolean): Boolean;
var
s : String;
LParts : TStrings;
i : Integer;
begin
s := ASysDescript;
s := Fetch(s);
Result := (s = 'TOPS20'); {do not localize}
if not Result then
begin
//one server doesn't give a SYST reply at all
//<ACC>LOGIN.CMD.1;P777700;A,1,15-Aug-2003 09:42:12,15-Aug-2003 09:42:12,16-Nov-1858 16:00:00
if AListing.Count >0 then
begin
LParts := TStringList.Create;
try
SplitDelimitedString(AListing[0], LParts, False, ','); {do not localize}
if LParts.Count > 0 then
begin
if PatternsInStr(';', LParts[0]) = 2 then {do not localize}
begin
if LParts.Count > 3 then
begin
s := LParts[2];
Result := IsDDMonthYY(Fetch(s), '-'); {do not localize}
if Result then begin
Result := IsHHMMSS(s, ':'); {do not localize}
end;
s := LParts[3];
Result := IsDDMonthYY(Fetch(s), '-'); {do not localize}
if Result then begin
Result := IsHHMMSS(s, ':'); {do not localize}
end;
end;
end;
{
maybe pattern like this:
TOPS20:<ACCT>
LOGIN.CMD.1
MSGS.TXT.1
}
s := AListing[0];
if IndyPos(TOPS20_VOLPATH_SEP, s) >0 then
begin
if IndyPos(TOPS20_VOLPATH_SEP, s) < IndyPos(TOPS20_DIRFILE_SEP, s) then
begin
Result := True;
for i := 1 to AListing.Count-1 do
begin
LParts.Clear;
Result := IndyPos(' ', AListing[i]) = 0; {do not localize}
if Result then
begin
SplitDelimitedString(AListing[i], LParts, False, '.'); {do not localize}
if LParts.Count = 3 then begin
Result := IsNumeric(LParts[2]);
end;
end;
if not Result then begin
Break;
end;
end;
end;
end;
end;
finally
FreeAndNil(LParts);
end;
end;
end;
end;
class function TIdFTPLPTOPS20.GetIdent: String;
begin
Result := 'TOPS20'; {do not localize}
end;
class function TIdFTPLPTOPS20.MakeNewItem(AOwner: TIdFTPListItems): TIdFTPListItem;
begin
Result := TIdTOPS20FTPListItem.Create(AOwner);
end;
class function TIdFTPLPTOPS20.ParseLine(const AItem: TIdFTPListItem;
const APath: String): Boolean;
var
LBuf : String;
LI : TIdTOPS20FTPListItem;
{
Notes from the FTP Server greeting at toad.xkl.com
230- Welcome! You are logged in to a Tops-20 system, probably not familiar
230- to you. We therefore offer this short note on directory and file naming
230- conventions:
230-
230- A file name consists of 2 required parts, and several optional parts, of
230- which 3 are important to you as an FTP user. These 5 parts together are
230-
230- device:<directory>filename.filetype.generation
230-
230- where the punctuation is required. The DEVICE:, <DIRECTORY>, and GENERATION
230- fields are optional, defaulting to current device and directory and latest
230- generation of the file. File names are NOT in general case-sensitive.
230-
230- <DIRECTORY> may have subparts, separated by dots. All the following are
230- syntactically valid directory specifications (though they may not exist on
230- this particular system):
230-
230- <FOO> or <FOO.BAR> or <FOO.BAR.QUUX> or <SRC.7.MONITOR.BUILD>
230-
230- GENERATION is numeric; it may take the special values 0 (latest generation),
230- -1 (new, next higher generation), -2 (oldest generation), and -3 (wildcard
230- for all generations), as well as specific numeric generations.
230-
230- DEVICE: usually represents the name of a file system.
230-
230- Wildcards are specified as * (match 0 or more characters) and % (match 1
230- single character). To obtain all the command files in a directory, you
230- would ask for the retrieval of
230-
230- *.CMD.*
230-
230- To obtain the latest version of all the files with a 1-character FILETYPE,
230- you would request
230-
230- *.%.0
}
function StripBuild(const AFileName : String): String;
var
LPos : Integer;
begin
LPos := RPos('.', AFileName, -1); {do not localize}
if LPos = 0 then begin
Result := AFileName;
end else begin
Result := Copy(AFileName, 1, LPos-1);
end;
end;
begin
LI := AItem as TIdTOPS20FTPListItem;
LBuf := AItem.Data;
if (IndyPos(TOPS20_VOLPATH_SEP, LBuf) > 0) and (IndyPos(TOPS20_DIRFILE_SEP, LBuf) = Length(LBuf)) then
begin
//Tape and subdir should work for CD
//Note this is probably something like a "CD ." on other systems.
//From what I saw at one server, they had to give a list including
//subdirectories because the server never returned those.
AItem.FileName := LBuf;
//You can tree this like a directory. It contains the device so it might
//look weird.
AItem.ItemType := ditDirectory;
//strip off device in and path suffix >
Fetch(LBuf, TOPS20_VOLPATH_SEP);
LBuf := Fetch(LBuf, TOPS20_DIRFILE_SEP);
AItem.LocalFileName := LowerCase(Fetch(LBuf, '.'));
AItem.SizeAvail := False;
AItem.ModifiedAvail := False;
Result := True;
Exit;
end;
if TextStartsWith(LBuf, '<') then {do not localize}
begin
//we may be dealing with a data format such as this:
//
//<ANONYMOUS>INSTALL.MEM.1;P775252;A,210,10-Apr-1990 13:17:41,10-Apr-1990 13:18:26,11-Jan-2003 11:34:26
AItem.FileName := Fetch(LBuf, ';'); {do not localize}
//P775252;
Fetch(LBuf, ';'); {do not localize}
//A,
Fetch(LBuf, ','); {do not localize}
//210,
Fetch(LBuf, ','); {do not localize}
//Creation Date - date - I think
LI.CreationDate := DateDDStrMonthYY(Fetch(LBuf));
//creation date - time
LI.CreationDate := LI.CreationDate + TimeHHMMSS(Trim(Fetch(LBuf, ','))); {do not localize}
//Last modified - date
AItem.ModifiedDate := DateDDStrMonthYY(Fetch(LBuf));
//Last modified - time
AItem.ModifiedDate := AItem.ModifiedDate + TimeHHMMSS(Trim(LBuf));
//strip off path information and build no for file
LBuf := LowerCase(AItem.FileName);
Fetch(LBuf, TOPS20_DIRFILE_SEP);
if IndyPos('.DIRECTORY.', LBuf) > 0 then {do not localize}
begin
AItem.ItemType := ditDirectory;
AItem.LocalFileName := Fetch(LBuf, '.'); {do not localize}
end else begin
AItem.LocalFileName := StripBuild(LBuf);
end;
end else
begin
//That's right - it only returned the file name, no dates, no size, nothing else
AItem.FileName := LBuf;
AItem.LocalFileName := LowerCase(StripBuild(LBuf));
AItem.ModifiedAvail := False;
AItem.SizeAvail := False;
if IndyPos('.DIRECTORY.', LBuf) > 0 then begin {do not localize}
AItem.ItemType := ditDirectory;
end;
end;
Result := True;
end;
initialization
RegisterFTPListParser(TIdFTPLPTOPS20);
finalization
UnRegisterFTPListParser(TIdFTPLPTOPS20);
end.