Download and Delete Matching Files

MFC example showing how to FTP download files matching a wildcarded file pattern and delete them from the FTP server.

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// Needs #include <CkFtp2.h>

    CkString strOut;

    CkFtp2 ftp;

    bool success;

    //  Any string unlocks the component for the 1st 30-days.
    success = ftp.UnlockComponent("Anything for 30-day trial");
    if (success != true) {
        strOut.append(ftp.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    ftp.put_Hostname("www.example-code.com");
    ftp.put_Username("****");
    ftp.put_Password("****");

    //  Connect and login to the FTP server.
    success = ftp.Connect();
    if (success != true) {
        strOut.append(ftp.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    //  Note: It may be tempting to call MGetFiles(pattern,localDir)
    //  followed by a call to DeleteMatching(pattern), however,
    //  if new files are uploaded to the FTP server while MGetFiles
    //  is running, those files will be deleted by DeleteMatching.

    //  Instead, it's best to set the ListPattern and then iterate
    //  over each file...

    //  Set the ListPattern = "*.xml" to match all XML files.
    ftp.put_ListPattern("*.xml");

    //  NumFilesAndDirs contains the number of files and sub-directories
    //  matching the ListPattern in the current remote directory.
    //  The first time it is accessed after changing ListPattern,
    //  or after calling ChangeRemoteDir, a snapshot of the directory
    //  listing is fetched and saved in memory. During this loop,
    //  the value of NumFilesAndDirs will not change.
    long i;
    const char * fname;

    long n;
    n = ftp.get_NumFilesAndDirs();
    if (n < 0) {
        strOut.append(ftp.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    if (n > 0) {
        for (i = 0; i <= n - 1; i++) {

            fname = ftp.getFilename(i);
            strOut.append(fname);
            strOut.append("\r\n");

            //  Download the file into the current working directory.
            success = ftp.GetFile(fname,fname);
            if (success != true) {
                strOut.append(ftp.lastErrorText());
                strOut.append("\r\n");
                SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
                return;
            }

            //  Now delete the file.
            success = ftp.DeleteRemoteFile(fname);
            if (success != true) {
                strOut.append(ftp.lastErrorText());
                strOut.append("\r\n");
                SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
                return;
            }

        }

    }

    ftp.Disconnect();

    SetDlgItemText(IDC_EDIT1,strOut.getUnicode());