Delphi DLL

Execute an FTP Upload Plan

Demonstrates the Chilkat Ftp2.PutPlan method, which executes a previously created upload plan. The first argument is the plan text and the second is the local path of a completion log that records each successful operation.

Note: The local paths are relative to the application's current working directory. Absolute paths may also be used. Supply the paths appropriate to your own environment.

Background: The completion log is what makes plan execution resumable: each successful upload is recorded, so if a run is interrupted, re-executing the same plan skips the operations already logged and continues where it left off — invaluable for a large transfer over a flaky connection. The plan's stored absolute remote paths are used regardless of the current remote directory, so execution is independent of session state.

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var
success: Boolean;
ftp: HCkFtp2;
sbPlan: HCkStringBuilder;
plan: PWideChar;

begin
success := False;

//  Demonstrates the Ftp2.PutPlan method, which executes a previously created upload plan.  The 1st
//  argument is the plan text and the 2nd is the local path of a completion log.

ftp := CkFtp2_Create();

CkFtp2_putHostname(ftp,'ftp.example.com');
CkFtp2_putUsername(ftp,'myFtpLogin');

//  Normally you would not hard-code the password in source.  You should instead obtain it
//  from an interactive prompt, environment variable, or a secrets vault.
CkFtp2_putPassword(ftp,'myPassword');

success := CkFtp2_Connect(ftp);
if (success = False) then
  begin
    Memo1.Lines.Add(CkFtp2__lastErrorText(ftp));
    Exit;
  end;

success := CkFtp2_ChangeRemoteDir(ftp,'public_html');
if (success = False) then
  begin
    Memo1.Lines.Add(CkFtp2__lastErrorText(ftp));
    Exit;
  end;

//  Load a plan that was previously created with CreatePlan.
sbPlan := CkStringBuilder_Create();
success := CkStringBuilder_LoadFile(sbPlan,'qa_output/upload_plan.txt','utf-8');
if (success = False) then
  begin
    Memo1.Lines.Add(CkStringBuilder__lastErrorText(sbPlan));
    Exit;
  end;
plan := CkStringBuilder__getAsString(sbPlan);

//  Execute the plan.  Each successful operation is recorded in the completion log, which lets an
//  interrupted run be resumed without repeating completed uploads.  The plan uses its stored
//  absolute remote paths even if the current remote directory has changed.
success := CkFtp2_PutPlan(ftp,plan,'qa_output/upload_done.log');
if (success = False) then
  begin
    Memo1.Lines.Add(CkFtp2__lastErrorText(ftp));
    Exit;
  end;
Memo1.Lines.Add('Upload plan executed.');

success := CkFtp2_Disconnect(ftp);
if (success = False) then
  begin
    Memo1.Lines.Add(CkFtp2__lastErrorText(ftp));
    Exit;
  end;

CkFtp2_Dispose(ftp);
CkStringBuilder_Dispose(sbPlan);