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What this is

This file is included in the "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

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The source code

 * Copyright 2001-2004 The Apache Software Foundation
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * See the License for the specific language governing permissions and
 * limitations under the License.
import java.util.Iterator;
import java.util.List;

 * This abstract class implements both the older FTPFileListParser and
 * newer FTPFileEntryParser interfaces with default functionality.
 * All the classes in the parser subpackage inherit from this.
 * @author Steve Cohen 
public abstract class FTPFileEntryParserImpl
    implements FTPFileEntryParser, FTPFileListParser
     * The constructor for a FTPFileEntryParserImpl object.
    public FTPFileEntryParserImpl()

     * Parses an FTP server file listing and converts it into a usable format
     * in the form of an array of  FTPFile  instances.  If the
     * file list contains no files,  null  should be
     * returned, otherwise an array of  FTPFile  instances
     * representing the files in the directory is returned.

* @param listStream The InputStream from which the file list should be * read. * @return The list of file information contained in the given path. null * if the list could not be obtained or if there are no files in * the directory. * @exception If an I/O error occurs reading the listStream. ***/ public FTPFile[] parseFileList(InputStream listStream) throws IOException { FTPFileList ffl = FTPFileList.create(listStream, this); return ffl.getFiles(); } /** * Reads the next entry using the supplied BufferedReader object up to * whatever delemits one entry from the next. This default implementation * simply calls BufferedReader.readLine(). * * @param reader The BufferedReader object from which entries are to be * read. * * @return A string representing the next ftp entry or null if none found. * @exception thrown on any IO Error reading from the reader. */ public String readNextEntry(BufferedReader reader) throws IOException { return reader.readLine(); } /** * This method is a hook for those implementors (such as * VMSVersioningFTPEntryParser, and possibly others) which need to * perform some action upon the FTPFileList after it has been created * from the server stream, but before any clients see the list. * * This default implementation is a no-op. * * @param original Original list after it has been created from the server stream * * @return original unmodified. */ public List preParse(List original) { Iterator it = original.iterator(); while (it.hasNext()){ String entry = (String); if (null == parseFTPEntry(entry)) { it.remove(); } else { break; } } return original; } } /* Emacs configuration * Local variables: ** * mode: java ** * c-basic-offset: 4 ** * indent-tabs-mode: nil ** * End: ** */

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