SFTP Download Files Matching a Pattern

Demonstrates how to download the files in a remote SFTP directory matching a file pattern. The example opens a directory, iterates over the files, and downloads each file matching a file pattern, such as "*.xml".

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import com.chilkatsoft.*;

public class ChilkatExample {

  static {
    try {
        System.loadLibrary("chilkat");
    } catch (UnsatisfiedLinkError e) {
      System.err.println("Native code library failed to load.\n" + e);
      System.exit(1);
    }
  }

  public static void main(String argv[])
  {
    //  Important: It is helpful to send the contents of the
    //  sftp.LastErrorText property when requesting support.

    CkSFtp sftp = new CkSFtp();

    //  Any string automatically begins a fully-functional 30-day trial.
    boolean success;
    success = sftp.UnlockComponent("Anything for 30-day trial");
    if (success != true) {
        System.out.println(sftp.lastErrorText());
        return;
    }

    //  Set some timeouts, in milliseconds:
    sftp.put_ConnectTimeoutMs(5000);
    sftp.put_IdleTimeoutMs(10000);

    //  Connect to the SSH server.
    //  The standard SSH port = 22
    //  The hostname may be a hostname or IP address.
    int port;
    String hostname;
    hostname = "www.my-sftp-server.com";
    port = 22;
    success = sftp.Connect(hostname,port);
    if (success != true) {
        System.out.println(sftp.lastErrorText());
        return;
    }

    //  Authenticate with the SSH server.  Chilkat SFTP supports
    //  both password-based authenication as well as public-key
    //  authentication.  This example uses password authenication.
    success = sftp.AuthenticatePw("myLogin","myPassword");
    if (success != true) {
        System.out.println(sftp.lastErrorText());
        return;
    }

    //  After authenticating, the SFTP subsystem must be initialized:
    success = sftp.InitializeSftp();
    if (success != true) {
        System.out.println(sftp.lastErrorText());
        return;
    }

    //  Open a directory on the server...
    //  Paths starting with a slash are "absolute", and are relative
    //  to the root of the file system. Names starting with any other
    //  character are relative to the user's default directory (home directory).
    //  A path component of ".." refers to the parent directory,
    //  and "." refers to the current directory.
    String handle;
    String dirPath;
    dirPath = "abc123";
    handle = sftp.openDir(dirPath);
    if (handle == null ) {
        System.out.println(sftp.lastErrorText());
        return;
    }

    //  Download the directory listing:
    CkSFtpDir dirListing;
    dirListing = sftp.ReadDir(handle);
    if (dirListing == null ) {
        System.out.println(sftp.lastErrorText());
        return;
    }

    //  Iterate over the files.
    int i;
    int n;
    n = dirListing.get_NumFilesAndDirs();
    if (n == 0) {
        System.out.println("No entries found in this directory.");
    }
    else {
        for (i = 0; i <= n - 1; i++) {
            CkSFtpFile fileObj;
            fileObj = dirListing.GetFileObject(i);

            System.out.println(fileObj.filename());

            //  Does this filename match the desired pattern?
            //  Write code here to determine if it's a match or not.

            //  Assuming it's a match, you would download the file
            //  like this:
            String remoteFilePath;
            remoteFilePath = dirPath + "/";
            remoteFilePath = remoteFilePath + fileObj.filename();
            String localFilePath;
            localFilePath = fileObj.filename();
            success = sftp.DownloadFileByName(remoteFilePath,localFilePath);
            if (success != true) {
                System.out.println(sftp.lastErrorText());
                return;
            }

        }

    }

    //  Close the directory
    success = sftp.CloseHandle(handle);
    if (success != true) {
        System.out.println(sftp.lastErrorText());
        return;
    }

    System.out.println("Success.");
  }
}