зеркало из https://github.com/mozilla/gecko-dev.git
89 строки
2.1 KiB
Java
89 строки
2.1 KiB
Java
/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil -*-
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*
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* The contents of this file are subject to the Mozilla Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is the Grendel mail/news client.
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*
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* The Initial Developer of the Original Code is Netscape Communications
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* Corporation. Portions created by Netscape are
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* Copyright (C) 1997 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*
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* Created: Frank Tang <ftang@netscape.com>
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*/
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package calypso.util;
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import java.util.Enumeration;
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import sun.io.CharToByteConverter;
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/*
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* CharToByteConverterEnumeration return a Enumeration of String
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* which represent available CharToByteConverter in the class path
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*
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* @author ftang
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* @version $Revision: 1.2 $
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* @see
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*
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*/
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public class CharToByteConverterEnumeration extends PrefetchEnumeration {
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Enumeration fDelegate;
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/*
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*
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* @author ftang
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* @version $Revision: 1.2 $
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* @see
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*
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*/
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public CharToByteConverterEnumeration()
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{
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fDelegate = new ClasspathEntryEnumeration("sun.io", "CharToByte", ".class");
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}
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/*
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*
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* @author ftang
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* @version $Revision: 1.2 $
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* @see
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*
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*/
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protected boolean verify(Object obj)
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{
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try {
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CharToByteConverter bc = CharToByteConverter.getConverter((String)obj);
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return true;
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} catch (Exception e)
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{
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return false;
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}
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}
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/*
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*
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* @author ftang
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* @version $Revision: 1.2 $
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* @see
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*
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*/
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protected Object fetch()
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{
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for(; fDelegate.hasMoreElements(); )
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{
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Object candidcate = fDelegate.nextElement();
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if(verify(candidcate))
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{
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return candidcate;
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}
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}
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return null;
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}
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}
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