1 files changed, 96 insertions, 0 deletions
diff --git a/libjava/java/nio/charset/spi/CharsetProvider.java b/libjava/java/nio/charset/spi/CharsetProvider.java
new file mode 100644
index 00000000000..e15153fe9e6
--- /dev/null
+++ b/libjava/java/nio/charset/spi/CharsetProvider.java
@@ -0,0 +1,96 @@
+/* CharsetProvider.java -- charset service provider interface
+   Copyright (C) 2002, 2006 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()
+  {
+    // We only do the security check for custom providers, not for the
+    // built in ones.
+    SecurityManager s = System.getSecurityManager();
+    if (s != null &&
+        ! (this instanceof gnu.java.nio.charset.Provider))
+	// GCJ LOCAL - We have the iconv provider in standard.omit
+        // || this instanceof gnu.java.nio.charset.iconv.IconvProvider))
+      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