| /* |
| * The Apache Software License, Version 1.1 |
| * |
| * |
| * Copyright (c) 1999 The Apache Software Foundation. All rights |
| * reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * 3. The end-user documentation included with the redistribution, |
| * if any, must include the following acknowledgment: |
| * "This product includes software developed by the |
| * Apache Software Foundation (http://www.apache.org/)." |
| * Alternately, this acknowledgment may appear in the software itself, |
| * if and wherever such third-party acknowledgments normally appear. |
| * |
| * 4. The names "Xalan" and "Apache Software Foundation" must |
| * not be used to endorse or promote products derived from this |
| * software without prior written permission. For written |
| * permission, please contact apache@apache.org. |
| * |
| * 5. Products derived from this software may not be called "Apache", |
| * nor may "Apache" appear in their name, without prior written |
| * permission of the Apache Software Foundation. |
| * |
| * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
| * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR |
| * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
| * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * ==================================================================== |
| * |
| * This software consists of voluntary contributions made by many |
| * individuals on behalf of the Apache Software Foundation and was |
| * originally based on software copyright (c) 1999, Lotus |
| * Development Corporation., http://www.lotus.com. For more |
| * information on the Apache Software Foundation, please see |
| * <http://www.apache.org/>. |
| */ |
| package org.apache.xpath.functions; |
| |
| import java.util.Properties; |
| |
| import java.io.BufferedInputStream; |
| import java.io.InputStream; |
| |
| import java.lang.ClassLoader; |
| |
| import org.apache.xml.utils.PrefixResolver; |
| import org.apache.xpath.res.XPATHErrorResources; |
| |
| //import org.w3c.dom.Node; |
| |
| import java.util.Vector; |
| |
| import org.apache.xpath.XPathContext; |
| import org.apache.xpath.XPath; |
| import org.apache.xpath.objects.XObject; |
| import org.apache.xpath.objects.XNumber; |
| import org.apache.xpath.objects.XString; |
| |
| /** |
| * <meta name="usage" content="advanced"/> |
| * Execute the SystemProperty() function. |
| */ |
| public class FuncSystemProperty extends FunctionOneArg |
| { |
| |
| /** |
| * The path/filename of the property file: XSLTInfo.properties |
| * Maintenance note: see also org.apache.xalan.processor.TransformerFactoryImpl.XSLT_PROPERTIES |
| */ |
| static String XSLT_PROPERTIES = "org/apache/xalan/res/XSLTInfo.properties"; |
| |
| /** a zero length Class array used in loadPropertyFile() */ |
| private static final Class[] NO_CLASSES = new Class[0]; |
| |
| /** a zero length Object array used in loadPropertyFile() */ |
| private static final Object[] NO_OBJS = new Object[0]; |
| |
| |
| /** |
| * Execute the function. The function must return |
| * a valid object. |
| * @param xctxt The current execution context. |
| * @return A valid XObject. |
| * |
| * @throws javax.xml.transform.TransformerException |
| */ |
| public XObject execute(XPathContext xctxt) throws javax.xml.transform.TransformerException |
| { |
| |
| String fullName = m_arg0.execute(xctxt).str(); |
| int indexOfNSSep = fullName.indexOf(':'); |
| String result; |
| String propName = ""; |
| |
| /* List of properties where the name of the property argument is |
| * to be looked for. */ |
| Properties xsltInfo = new Properties(); |
| |
| loadPropertyFile(XSLT_PROPERTIES, xsltInfo); |
| |
| if (indexOfNSSep > 0) |
| { |
| String prefix = (indexOfNSSep >= 0) |
| ? fullName.substring(0, indexOfNSSep) : ""; |
| String namespace; |
| |
| namespace = xctxt.getNamespaceContext().getNamespaceForPrefix(prefix); |
| propName = (indexOfNSSep < 0) |
| ? fullName : fullName.substring(indexOfNSSep + 1); |
| |
| if (namespace.startsWith("http://www.w3.org/XSL/Transform") |
| || namespace.equals("http://www.w3.org/1999/XSL/Transform")) |
| { |
| result = xsltInfo.getProperty(propName); |
| |
| if (null == result) |
| { |
| warn(xctxt, XPATHErrorResources.WG_PROPERTY_NOT_SUPPORTED, |
| new Object[]{ fullName }); //"XSL Property not supported: "+fullName); |
| |
| return XString.EMPTYSTRING; |
| } |
| } |
| else |
| { |
| warn(xctxt, XPATHErrorResources.WG_DONT_DO_ANYTHING_WITH_NS, |
| new Object[]{ namespace, |
| fullName }); //"Don't currently do anything with namespace "+namespace+" in property: "+fullName); |
| |
| try |
| { |
| result = System.getProperty(propName); |
| |
| if (null == result) |
| { |
| |
| // result = System.getenv(propName); |
| return XString.EMPTYSTRING; |
| } |
| } |
| catch (SecurityException se) |
| { |
| warn(xctxt, XPATHErrorResources.WG_SECURITY_EXCEPTION, |
| new Object[]{ fullName }); //"SecurityException when trying to access XSL system property: "+fullName); |
| |
| return XString.EMPTYSTRING; |
| } |
| } |
| } |
| else |
| { |
| try |
| { |
| result = System.getProperty(fullName); |
| |
| if (null == result) |
| { |
| |
| // result = System.getenv(fullName); |
| return XString.EMPTYSTRING; |
| } |
| } |
| catch (SecurityException se) |
| { |
| warn(xctxt, XPATHErrorResources.WG_SECURITY_EXCEPTION, |
| new Object[]{ fullName }); //"SecurityException when trying to access XSL system property: "+fullName); |
| |
| return XString.EMPTYSTRING; |
| } |
| } |
| |
| if (propName.equals("version") && result.length() > 0) |
| { |
| try |
| { |
| // Needs to return the version number of the spec we conform to. |
| return new XNumber(1.0); |
| } |
| catch (Exception ex) |
| { |
| return new XString(result); |
| } |
| } |
| else |
| return new XString(result); |
| } |
| |
| /** |
| * Retrieve a propery bundle from a specified file |
| * |
| * @param file The string name of the property file. The name |
| * should already be fully qualified as path/filename |
| * @param target The target property bag the file will be placed into. |
| */ |
| public void loadPropertyFile(String file, Properties target) |
| { |
| |
| InputStream is = null; |
| |
| try |
| { |
| try { |
| java.lang.reflect.Method getCCL = Thread.class.getMethod("getContextClassLoader", NO_CLASSES); |
| if (getCCL != null) { |
| ClassLoader contextClassLoader = (ClassLoader) getCCL.invoke(Thread.currentThread(), NO_OBJS); |
| is = contextClassLoader.getResourceAsStream(file); // file should be already fully specified |
| } |
| } |
| catch (Exception e) {} |
| |
| if (is == null) { |
| // NOTE! For the below getResourceAsStream in Sun JDK 1.1.8M |
| // we apparently must add the leading slash character - I |
| // don't know why, but if it's not there, we throw an NPE from the below loading |
| is = FuncSystemProperty.class.getResourceAsStream("/" + file); // file should be already fully specified |
| } |
| |
| // get a buffered version |
| BufferedInputStream bis = new BufferedInputStream(is); |
| |
| target.load(bis); // and load up the property bag from this |
| bis.close(); // close out after reading |
| } |
| catch (Exception ex) |
| { |
| // ex.printStackTrace(); |
| throw new org.apache.xml.utils.WrappedRuntimeException(ex); |
| } |
| } |
| } |