(Delphi ActiveX) Set Entry Filepath (in output Zip) when Zipping

Demonstrates how to set the path for the file entry within the .zip to something different than the path in the filesystem.

Chilkat for Delphi Downloads Chilkat ActiveX DLL for Delphi Chilkat non-ActiveX DLL for Delphi * The examples here use the ActiveX DLL.

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Chilkat_TLB;

...

procedure TForm1.Button1Click(Sender: TObject);
var
zip: TChilkatZip;
success: Integer;
saveExtraPath: Integer;
numEntries: Integer;
i: Integer;
e: IChilkatZipEntry;
entry: IChilkatZipEntry;

begin
// This requires the Chilkat Zip API to have been previously unlocked.
// See Unlock Chilkat Zip for sample code.

zip := TChilkatZip.Create(Self);

success := zip.NewZip('qa_output/zipA.zip');

// When an absolute filepath is passed to AppendOneFileOrDir, the path within the .zip
// will be one of two values:  (1) just the filename part if saveExtraPath is 0,
// or (2) the full absolute path, but made relative, if saveExtraPath is 1.
// (For example, "c:/ck2000/appData/UnitTest/qa_data/hamlet.xml" made relative is 
// "ck2000/appData/UnitTest/qa_data/hamlet.xml")
saveExtraPath := 0;
success := zip.AppendOneFileOrDir('c:/ck2000/appData/UnitTest/qa_data/hamlet.xml',saveExtraPath);
if (success <> 1) then
  begin
    Memo1.Lines.Add(zip.LastErrorText);
    Exit;
  end;

// When a relative path is passed to AppendOneFileOrDir, then saveExtraPath does not apply.
// For example, assume our current working directory is "c:/ck2000/appData/UnitTest".  The following
// call to AppendOneFileOrDir creates an entry with the filepath "qa_data/hamlet.xml".
success := zip.AppendOneFileOrDir('qa_data/hamlet.xml',saveExtraPath);
if (success <> 1) then
  begin
    Memo1.Lines.Add(zip.LastErrorText);
    Exit;
  end;

// Examine the entries
numEntries := zip.NumEntries;
i := 0;
while i < numEntries do
  begin
    e := zip.GetEntryByIndex(i);
    Memo1.Lines.Add(IntToStr(i) + ': ' + e.FileName);

    i := i + 1;
  end;

// The output so far is:

// 	0: hamlet.xml
// 	1: qa_data/hamlet.xml

// If we write the .zip as-is, then the zip will have two entries
// with the filepaths as shown above.

// This writes "qa_output/zipA.zip"
success := zip.WriteZip();

// Now change the entry filepaths to whatever is desired.
entry := zip.GetEntryByName('hamlet.xml');
if (zip.LastMethodSuccess = 0) then
  begin
    Memo1.Lines.Add('entry not found');
    Exit;
  end;

entry.FileName := 'Shakespeare/Claudius1.xml';

entry := zip.GetEntryByName('qa_data/hamlet.xml');
if (zip.LastMethodSuccess = 0) then
  begin
    Memo1.Lines.Add('entry not found');
    Exit;
  end;

entry.FileName := 'Shakespeare/Claudius2.xml';

// Change the name of the .zip to be written and write again:
zip.FileName := 'qa_output/zipB.zip';
success := zip.WriteZipAndClose();
if (success <> 1) then
  begin
    Memo1.Lines.Add(zip.LastErrorText);
  end
else
  begin
    Memo1.Lines.Add('Zip created!');
  end;

// Examine both zipA.zip and zipB.zip using 7zip (or another tool) to see the differences.
end;