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-/* CharsetProvider.java -- charset service provider interface
- Copyright (C) 2002 Free Software Foundation
-
-This file is part of GNU Classpath.
-
-GNU Classpath is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
-any later version.
-
-GNU Classpath is distributed in the hope that it will be useful, but
-WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with GNU Classpath; see the file COPYING. If not, write to the
-Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
-02110-1301 USA.
-
-Linking this library statically or dynamically with other modules is
-making a combined work based on this library. Thus, the terms and
-conditions of the GNU General Public License cover the whole
-combination.
-
-As a special exception, the copyright holders of this library give you
-permission to link this library with independent modules to produce an
-executable, regardless of the license terms of these independent
-modules, and to copy and distribute the resulting executable under
-terms of your choice, provided that you also meet, for each linked
-independent module, the terms and conditions of the license of that
-module. An independent module is a module which is not derived from
-or based on this library. If you modify this library, you may extend
-this exception to your version of the library, but you are not
-obligated to do so. If you do not wish to do so, delete this
-exception statement from your version. */
-
-package java.nio.charset.spi;
-
-import java.nio.charset.Charset;
-import java.util.Iterator;
-
-
-/**
- * This class allows an implementor to provide additional character sets. The
- * subclass must have a nullary constructor, and be attached to charset
- * implementation classes. These extensions are loaded via the context class
- * loader. To provide the charset extension, all files named
- * <code>META-INF/services/java.nio.charset.spi.CharsetProvider</code> are
- * read from the classpath. Each one should be a UTF-8 encoded list of
- * fully-qualified names of concrete subclasses of this class; whitespace is
- * ignored, and '#' starts comments. Duplicates are ignored. The
- * implementations must be accessible to the classloader that requests them.
- *
- * @author Eric Blake (ebb9@email.byu.edu)
- * @see Charset
- * @since 1.4
- * @status updated to 1.4
- */
-public abstract class CharsetProvider
-{
- /**
- * Initialize a new charset provider. This performs a security check on
- * RuntimePermission("charsetProvider").
- *
- * @throws SecurityException if building a new set is not allowed
- */
- protected CharsetProvider()
- {
- SecurityManager s = System.getSecurityManager();
- if (s != null)
- s.checkPermission(new RuntimePermission("charsetProvider"));
- }
-
- /**
- * Returns an iterator over the charsets defined by this provider.
- *
- * @return the iterator
- * @see Charset#availableCharsets()
- */
- public abstract Iterator charsets();
-
- /**
- * Returns the named charset, by canonical name or alias.
- *
- * @param name the name of the character
- *
- * @return the charset, or null if not supported
- */
- public abstract Charset charsetForName(String name);
-} // class CharsetProvider
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