Example usage for org.apache.commons.net.ftp FTPCmd NLST

Introduction

In this page you can find the example usage for org.apache.commons.net.ftp FTPCmd NLST.

Prototype

FTPCmd NLST

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Usage

From source file:com.atomicleopard.thundr.ftp.commons.FTP.java

/***
 * A convenience method to send the FTP NLST command to the server,
 * receive the reply, and return the reply code.  Remember, it is up
 * to you to manage the data connection.  If you don't need this low
 * level of access, use {@link org.apache.commons.net.ftp.FTPClient}
 * , which will handle all low level details for you.
 * <p>/* w  w w  .j  ava  2s  . c  o  m*/
 * @return The reply code received from the server.
 * @exception FTPConnectionClosedException
 *      If the FTP server prematurely closes the connection as a result
 *      of the client being idle or some other reason causing the server
 *      to send FTP reply code 421.  This exception may be caught either
 *      as an IOException or independently as itself.
 * @exception IOException  If an I/O error occurs while either sending the
 *      command or receiving the server reply.
 ***/
public int nlst() throws IOException {
    return sendCommand(FTPCmd.NLST);
}

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From source file:com.atomicleopard.thundr.ftp.commons.FTP.java

/***
 * A convenience method to send the FTP NLST command to the server,
 * receive the reply, and return the reply code.  Remember, it is up
 * to you to manage the data connection.  If you don't need this low
 * level of access, use {@link org.apache.commons.net.ftp.FTPClient}
 * , which will handle all low level details for you.
 * <p>//www. ja v a 2 s  . c  om
 * @param pathname  The pathname to list,
 * may be {@code null} in which case the command is sent with no parameters
 * @return The reply code received from the server.
 * @exception FTPConnectionClosedException
 *      If the FTP server prematurely closes the connection as a result
 *      of the client being idle or some other reason causing the server
 *      to send FTP reply code 421.  This exception may be caught either
 *      as an IOException or independently as itself.
 * @exception IOException  If an I/O error occurs while either sending the
 *      command or receiving the server reply.
 ***/
public int nlst(String pathname) throws IOException {
    return sendCommand(FTPCmd.NLST, pathname);
}

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From source file:com.atomicleopard.thundr.ftp.commons.FTPClient.java

/**
 * Obtain a list of filenames in a directory (or just the name of a given
 * file, which is not particularly useful).  This information is obtained
 * through the NLST command.  If the given pathname is a directory and
 * contains no files,  a zero length array is returned only
 * if the FTP server returned a positive completion code, otherwise
 * null is returned (the FTP server returned a 550 error No files found.).
 * If the directory is not empty, an array of filenames in the directory is
 * returned. If the pathname corresponds
 * to a file, only that file will be listed.  The server may or may not
 * expand glob expressions./*from ww w. j  a va  2  s .  c o  m*/
 * <p>
 * @param pathname  The file or directory to list.
 *                  Warning: the server may treat a leading '-' as an
 *                  option introducer. If so, try using an absolute path,
 *                  or prefix the path with ./ (unix style servers).
 *                  Some servers may support "--" as meaning end of options,
 *                  in which case "-- -xyz" should work.
 * @return The list of filenames contained in the given path.  null if
 *     the list could not be obtained.  If there are no filenames in
 *     the directory, a zero-length array is returned.
 * @exception FTPConnectionClosedException
 *      If the FTP server prematurely closes the connection as a result
 *      of the client being idle or some other reason causing the server
 *      to send FTP reply code 421.  This exception may be caught either
 *      as an IOException or independently as itself.
 * @exception IOException  If an I/O error occurs while either sending a
 *      command to the server or receiving a reply from the server.
 */
public String[] listNames(String pathname) throws IOException {
    Socket socket = _openDataConnection_(FTPCmd.NLST, getListArguments(pathname));

    if (socket == null) {
        return null;
    }

    BufferedReader reader = new BufferedReader(
            new InputStreamReader(socket.getInputStream(), getControlEncoding()));

    ArrayList<String> results = new ArrayList<String>();
    String line;
    while ((line = reader.readLine()) != null) {
        results.add(line);
    }

    reader.close();
    socket.close();

    if (completePendingCommand()) {
        String[] names = new String[results.size()];
        return results.toArray(names);
    }

    return null;
}

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