| /* 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., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307 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; |
| } |
| |
| } |
| |