FaVolumeId??

[Ian Branch 127]

Hi Team,

D11.2 patch 1, 32bit VCL Apps.

I have this bit of legacy code..

...
      //
      r := FindFirst(sTempFilesPath + '*.*', FaAnyfile, DirInfo); //  0 if files are found.
      //
      while r = 0 do
      begin
        if ((DirInfo.Attr and FaDirectory <> FaDirectory) and (DirInfo.Attr and FaVolumeId <> FaVolumeID)) then
          if DeleteFile(pChar(sTempFilesPath + DirInfo.Name)) = false then
            Memo1.Lines.Add('    Unable to delete file ' + sTempFilesPath + DirInfo.Name + '!')
          else
            Memo1.Lines.Add('    File ' + sTempFilesPath + DirInfo.Name + ' successfully deleted.');
        //
        r := FindNext(DirInfo);
        //
      end;
      //
...
...

D11.2 is telling me FaVolumeId is deprecated..

To what? 

What replaces it?

Alternatively, how should the above be now written?

Regards & TIA

Ian

[PeterBelow 238]

I would rewrite this code using the routines from System.IOUtils. Use TDirectory.GetFiles to get a list of files in a directory you can then walk over.  TPath.GetTempPath gets you the user's temp folder, TFile.Delete deletes a file. Use a try except block around this statement to catch a failure to delete a file.

[Ian Branch 127]

Hi Peter,

Tks for the pointer.  Haven't used those before.

I declared..

var
  Path: string;
  Filenames: TArray<string>;
  i: Integer;

Then coded..

    //
    Filenames := TDirectory.GetFiles(sTempFilesPath);
    //
    Memo1.Lines.Add('Now deleting ' + Length(Filenames).ToString + ' files found in the Database Temp Files Drive/Directory.');
    //
    for i := 0 to Length(Filenames) - 1 do
    begin
      if DeleteFile(PChar(sTempFilesPath + Filenames[i])) = False then
        Memo1.Lines.Add('    Unable to delete file ' + sTempFilesPath + Filenames[i] + '!')
      else
        Memo1.Lines.Add('    File ' + sTempFilesPath + Filenames[i] + ' successfully deleted.');
      //
      next;
    end;
      //
    Memo1.Lines.Add('The Database Temp Files Drive/Directory has been cleared.');
    Memo1.Lines.Add(' ');
      //

I used DeleteFile rather than TFile.Delete as the latter did not give me a boolean response for the Memo lines.

 

Regards,

Ian

[Lajos Juhász 293]

7 hours ago, Ian Branch said:

Alternatively, how should the above be now written?

From the source:

 

faVolumeID    = $00000008 platform deprecated;  // not used in Win32

 

Looks like it was removed from windows.

[Ian Branch 127]

Hi Team,

After further study it cleaned own to this..

  //
  // Delete all files in the Server Temp Files Path.
  //
  if Trim(sTempFilesPath) <> '' then
  begin
    //
    DBE1.Close;
    //
    aFilenames := TDirectory.GetFiles(sTempFilesPath);
    //
    Memo1.Lines.Add('Now deleting ' + Length(aFilenames).ToString + ' files found in the Database Temp Files Drive/Directory.');
    //
    for FileName in aFileNames do
    begin
      //
      if DeleteFile(FileName) = False then
        Memo1.Lines.Add('    Unable to delete file ' + FileName + '!')
      else
        Memo1.Lines.Add('    File ' + FileName + ' successfully deleted.');
      //
    end;
    //
    Memo1.Lines.Add('The Database Temp Files Drive/Directory has been cleared.');
    Memo1.Lines.Add(' ');
    //
  end;
  //

Tks to all.

 

Regards,

Ian

Edited October 23, 2022 by Ian Branch

[Nigel Thomas 35]

if Trim(sTempFilesPath) <> '' then

Trim *returns* the trimmed string, it doesn't trim it in place. Your code is still working on the non-trimmed sTempFilesPath.

[Ian Branch 127]

Hi Nigel,

Correct, the test is to ensure that sTempFilesPath actually has something in it.

I suppose I could just as easily have used sTempFilesPath.IsEmpty.

 

Ian

[Fr0sT.Brutal 900]

11 hours ago, Ian Branch said:

I suppose I could just as easily have used sTempFilesPath.IsEmpty.

Quote

Returns whether this 0-based string is empty (does not contain any characters).

IOW, that method won't save you from paths containing only spaces