Lazarus Pascal Requires Chilkat v11.0.0+

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. Lazarus Pascal

program ChilkatDemo;

// Demonstrates using the Chilkat Pascal wrapper via the C bridge DLL.
// Builds as a console application under Lazarus (FPC) or Delphi.

{$IFDEF FPC}
  {$MODE DELPHI}
{$ENDIF}
{$APPTYPE CONSOLE}

uses
  {$IFDEF UNIX}
  cthreads,
  {$ENDIF}
  SysUtils,
  CkDllLoader,
  Chilkat.ZipEntry,
  Chilkat.Zip;

// ---------------------------------------------------------------------------

procedure RunDemo;
var
  success: Boolean;
  zip: TZip;
  saveExtraPath: Boolean;
  entry: TZipEntry;
  numEntries: Integer;
  i: Integer;

begin
  success := False;

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

  zip := TZip.Create;

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

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

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

  //  Examine the entries
  entry := TZipEntry.Create;
  numEntries := zip.NumEntries;
  i := 0;
  while i < numEntries do
    begin
      zip.EntryAt(i,entry);
      WriteLn(i + ': ' + entry.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.
  success := zip.EntryOf('hamlet.xml',entry);
  if (success = False) then
    begin
      WriteLn('entry not found');
      Exit;
    end;

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

  success := zip.EntryOf('qa_data/hamlet.xml',entry);
  if (success = False) then
    begin
      WriteLn('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 <> True) then
    begin
      WriteLn(zip.LastErrorText);
    end
  else
    begin
      WriteLn('Zip created!');
    end;

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


  zip.Free;
  entry.Free;

end;

// ---------------------------------------------------------------------------

begin

  try
    RunDemo;
  except
    on E: Exception do
      WriteLn('Unhandled exception: ', E.ClassName, ': ', E.Message);
  end;

  WriteLn;
  {$IFDEF MSWINDOWS}
  WriteLn('Press Enter to exit...');
  ReadLn;
  {$ENDIF}
end.