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unit _MetaManager; |
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interface |
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|
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uses _FileTypes, TXAN, TXMP, _EmptyFile; |
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|
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type |
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TFileType = class of TFile; |
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TFileDesc = record |
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ext: String; |
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ftype: TFileType; |
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end; |
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|
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const |
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FileDescs: array[0..1] of TFileDesc = ( |
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(ext: 'TXAN'; ftype: TFile_TXAN), |
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(ext: 'TXMP'; ftype: TFile_TXMP) |
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); |
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|
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type |
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TMetaManager = class |
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protected |
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FFiles: array of TFile; |
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FConnectionID: Integer; |
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function GetFileCount: Integer; |
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function GetFileById(Id: Integer): TFile; |
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private |
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procedure InitRootFiles; |
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public |
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constructor Create(ConnectionID: Integer); |
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procedure InitFile(id: Integer); |
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procedure InitFileFields(id: Integer); |
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|
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property FileCount: Integer read GetFileCount; |
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property FileById[Id: Integer]: TFile read GetFileById; |
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end; |
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|
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implementation |
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|
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uses |
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Classes, ConnectionManager, Access_OniArchive, TypeDefs, Dialogs, SysUtils, StrUtils; |
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|
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{ TFileManager } |
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|
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constructor TMetaManager.Create(ConnectionID: Integer); |
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begin |
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FConnectionID := ConnectionID; |
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InitRootFiles; |
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end; |
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|
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function TMetaManager.GetFileById(Id: Integer): TFile; |
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begin |
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Result := FFiles[Id]; |
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end; |
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|
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function TMetaManager.GetFileCount: Integer; |
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begin |
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Result := Length(FFiles); |
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end; |
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|
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procedure TMetaManager.InitFile(id: Integer); |
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var |
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typei: Integer; |
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finfo: TFileInfo; |
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begin |
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if id < ConManager.Connection[FConnectionID].GetFileCount then |
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begin |
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if not Assigned(FFiles[id]) then |
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begin |
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finfo := ConManager.Connection[FConnectionID].GetFileInfo(id); |
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if finfo.Size > 0 then |
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begin |
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for typei := 0 to High(FileDescs) do |
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begin |
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if FileDescs[typei].ext = finfo.Extension then |
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begin |
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FFiles[id] := TFileType(FileDescs[typei].ftype).Create(FConnectionID, id); |
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Break; |
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end; |
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end; |
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if typei > High(FileDescs) then |
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FFiles[id] := TFile_Empty.Create(FConnectionID, id); |
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end else |
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FFiles[id] := TFile_Empty.Create(FConnectionID, id); |
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Exit; |
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end; |
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end; |
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end; |
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|
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procedure TMetaManager.InitFileFields(id: Integer); |
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begin |
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if id < ConManager.Connection[FConnectionID].GetFileCount then |
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begin |
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if not Assigned(FFiles[id]) then |
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begin |
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InitFile(id); |
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if not (FFiles[id] is TFile_Empty) then |
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FFiles[id].InitDataFields; |
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end; |
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end; |
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end; |
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|
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procedure TMetaManager.InitRootFiles; |
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var |
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files: TStrings; |
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i: Integer; |
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typei: Integer; |
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fid: Integer; |
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finfo: TFileInfo; |
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begin |
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if ConManager.Connection[FConnectionID] is TAccess_OniArchive then |
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TAccess_OniArchive(ConManager.Connection[FConnectionID]).UnloadWhenUnused := False; |
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files := TStringList.Create; |
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files := ConManager.Connection[FConnectionID].GetFilesList('', '', False, ST_IDAsc); |
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SetLength(FFiles, ConManager.Connection[FConnectionID].GetFileCount); |
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for i := 0 to High(FFiles) do |
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FFiles[i] := nil; |
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if files.Count > 0 then |
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begin |
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for i := 0 to files.Count - 1 do |
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begin |
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fid := StrToInt(MidStr(files.Strings[i], 1, 5)); |
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finfo := ConManager.Connection[FConnectionID].GetFileInfo(fid); |
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if Length(finfo.Name) > 0 then |
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begin |
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if finfo.Size > 0 then |
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begin |
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for typei := 0 to High(FileDescs) do |
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begin |
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if FileDescs[typei].ext = finfo.Extension then |
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begin |
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FFiles[fid] := TFileType(FileDescs[typei].ftype).Create(FConnectionID, fid); |
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Break; |
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end; |
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end; |
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end |
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else |
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FFiles[fid] := TFile_Empty.Create(FConnectionID, fid); |
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end; |
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end; |
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end; |
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files.Free; |
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if ConManager.Connection[FConnectionID] is TAccess_OniArchive then |
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TAccess_OniArchive(ConManager.Connection[FConnectionID]).UnloadWhenUnused := True; |
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end; |
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|
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end. |
