(Unicode C++) FTP Non-Recursive Sync Directory (Download)

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Download files from the server that have filenames matchhing a pattern, and don't yet exist in a local directory.

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#include <CkFtp2W.h>
#include <CkStringBuilderW.h>
#include <CkStringTableW.h>

void ChilkatSample(void)
    {
    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    CkFtp2W ftp;

    ftp.put_Hostname(L"ftp.example.com");
    ftp.put_Username(L"myUsername");
    ftp.put_Password(L"myPassword");
    ftp.put_Port(21);
    ftp.put_AuthTls(true);

    // Connect and login to the FTP server.
    bool success = ftp.Connect();
    if (success != true) {
        wprintf(L"%s\n",ftp.lastErrorText());
        return;
    }

    // Change to the remote directory where the files are located.
    // This step is only necessary if the files are not in the root directory
    // of the FTP account.
    success = ftp.ChangeRemoteDir(L"qa");
    if (success != true) {
        wprintf(L"%s\n",ftp.lastErrorText());
        return;
    }

    // Indicate that we only want to download files with filenames ending in ".txt"
    ftp.put_SyncMustMatch(L"*.txt");

    // Modes for synchronization are as follows:
    // mode=0: Download all files
    // mode=1: Download all files that do not exist on the local filesystem.
    // mode=2: Download newer or non-existant files.
    // mode=3: Download only newer files. If a file does not already exist on the local filesystem, it is not downloaded from the server.
    // mode=5: Download only missing files or files with size differences.
    // mode=6: Same as mode 5, but also download newer files.
    // mode=99: Do not download files, but instead delete remote files that do not exist locally.
    int mode = 1;

    // Download all files matching "*.txt" from the current remote ftp directory.
    // The files are downloaded into c:/temp/qa_output
    success = ftp.SyncLocalDir(L"c:/temp/qa_output",mode);
    if (success != true) {
        wprintf(L"%s\n",ftp.lastErrorText());
        return;
    }

    // We can see what files were downloaded in the SyncedFiles property,
    // which lists the files one per line.
    wprintf(L"%s\n",ftp.syncedFiles());

    // Perhaps we wish to delete the files we just downloaded from the server..
    CkStringBuilderW sb;
    sb.Append(ftp.syncedFiles());

    CkStringTableW st;
    st.AppendFromSb(sb);

    int numFiles = st.get_Count();
    int i = 0;
    const wchar_t *remoteFilename = 0;
    while (i < numFiles) {
        remoteFilename = st.stringAt(i);
        wprintf(L"Deleting %s from the FTP server\n",remoteFilename);
        success = ftp.DeleteRemoteFile(remoteFilename);
        if (success != true) {
            wprintf(L"%s\n",ftp.lastErrorText());
            return;
        }

        i = i + 1;
    }

    success = ftp.Disconnect();
    }