mirror of git://gcc.gnu.org/git/gcc.git
111 lines
3.6 KiB
Java
111 lines
3.6 KiB
Java
/* IconvProvider.java --
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Copyright (C) 2005, 2006 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package gnu.java.nio.charset.iconv;
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import java.nio.charset.Charset;
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import java.nio.charset.spi.CharsetProvider;
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import java.util.Iterator;
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import java.util.Vector;
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/**
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* Charset provider wrapping iconv.
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*
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* Note: This class is a privileged class, because it can be instantiated without
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* requiring the RuntimePermission("charsetProvider"). There is a check in
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* java.nio.charset.spi.CharsetProvider to skip the security check if the provider
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* is an instance of this class.
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*
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* @author Sven de Marothy
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*/
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public final class IconvProvider extends CharsetProvider
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{
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private static IconvProvider singleton;
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// Declaring the construtor public may violate the use of singleton.
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// But it must be public so that an instance of this class can be
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// created by Class.newInstance(), which is the case when this provider is
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// defined in META-INF/services/java.nio.charset.spi.CharsetProvider.
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public IconvProvider()
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{
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IconvMetaData.setup();
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}
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public Iterator charsets()
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{
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Vector names = IconvMetaData.charsets();
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Vector charsets = new Vector();
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for (int i = 0; i < names.size(); i++)
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{
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try
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{
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charsets.add(new IconvCharset((IconvMetaData) names.elementAt(i)));
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}
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catch (IllegalArgumentException e)
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{
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}
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}
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return charsets.iterator();
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}
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public Charset charsetForName(String charsetName)
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{
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try
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{
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IconvMetaData info = IconvMetaData.get(charsetName);
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// Try anyway if the set isn't found.
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if (info == null)
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info = new IconvMetaData(charsetName, 2.0f, 2.0f, 2.0f, 2.0f,
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new String[] { }, charsetName);
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return new IconvCharset(info);
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}
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catch (IllegalArgumentException e)
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{
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return null;
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}
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}
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public static synchronized IconvProvider provider()
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{
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if (singleton == null)
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singleton = new IconvProvider();
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return singleton;
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}
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}
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