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-/* SystemPropertyFunction.java --
- Copyright (C) 2004 Free Software Foundation, Inc.
-
-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 gnu.xml.transform;
-
-import java.util.ArrayList;
-import java.util.List;
-import javax.xml.namespace.QName;
-import javax.xml.xpath.XPathFunction;
-import javax.xml.xpath.XPathFunctionException;
-import org.w3c.dom.Node;
-import gnu.xml.xpath.Expr;
-import gnu.xml.xpath.Function;
-
-/**
- * The XSLT <code>system-property()</code>function.
- *
- * @author <a href='mailto:dog@gnu.org'>Chris Burdess</a>
- */
-final class SystemPropertyFunction
- extends Expr
- implements XPathFunction, Function
-{
-
- List args;
-
- public Object evaluate(List args)
- throws XPathFunctionException
- {
- String name = (String) args.get(0);
- return systemProperty(QName.valueOf(name));
- }
-
- public void setArguments(List args)
- {
- this.args = args;
- }
-
- public Object evaluate(Node context, int pos, int len)
- {
- int arity = args.size();
- List values = new ArrayList(arity);
- for (int i = 0; i < arity; i++)
- {
- Expr arg = (Expr) args.get(i);
- values.add(arg.evaluate(context, pos, len));
- }
- String name = _string(context, values.get(0));
- return systemProperty(QName.valueOf(name));
- }
-
- Object systemProperty(QName name)
- {
- String localName = name.getLocalPart();
- String prefix = name.getPrefix();
- String uri = name.getNamespaceURI();
- if (Stylesheet.XSL_NS.equals(uri) ||
- "xsl".equals(prefix))
- {
- if ("version".equals(localName))
- {
- return new Double(1.0d);
- }
- else if ("vendor".equals(localName))
- {
- return "The Free Software Foundation";
- }
- else if ("vendor-url".equals(localName))
- {
- return "http://www.gnu.org/";
- }
- else
- {
- return "";
- }
- }
- return System.getProperty(localName);
- }
-
- public Expr clone(Object context)
- {
- SystemPropertyFunction f = new SystemPropertyFunction();
- int len = args.size();
- List args2 = new ArrayList(len);
- for (int i = 0; i < len; i++)
- {
- args2.add(((Expr) args.get(i)).clone(context));
- }
- f.setArguments(args2);
- return f;
- }
-
-}
-
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