code: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements. See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership. The ASF licenses this file
   * to you under the Apache License, Version 2.0 (the  "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  /*
   * $Id$
   */
  
  package org.apache.xalan.xsltc.trax;
  
  import java.io.InputStream;
  import java.io.Reader;
  
  import javax.xml.XMLConstants;
  import javax.xml.parsers.ParserConfigurationException;
  import javax.xml.parsers.SAXParser;
  import javax.xml.parsers.SAXParserFactory;
  
  import javax.xml.transform.Source;
  import javax.xml.transform.TransformerConfigurationException;
  import javax.xml.transform.dom.DOMSource;
  import javax.xml.transform.sax.SAXSource;
  import javax.xml.transform.stream.StreamSource;
  
  import org.apache.xalan.xsltc.compiler.XSLTC;
  import org.apache.xalan.xsltc.compiler.util.ErrorMsg;
  
  import org.w3c.dom.Document;
  
  import org.xml.sax.InputSource;
  import org.xml.sax.SAXException;
  import org.xml.sax.SAXNotRecognizedException;
  import org.xml.sax.SAXNotSupportedException;
  import org.xml.sax.XMLReader;
  import org.xml.sax.helpers.XMLReaderFactory;
  
  /**
   * @author Santiago Pericas-Geertsen
   */
  public final class Util {
  
      public static String baseName(String name) {
  	return org.apache.xalan.xsltc.compiler.util.Util.baseName(name);
      }
      
      public static String noExtName(String name) {
  	return org.apache.xalan.xsltc.compiler.util.Util.noExtName(name);
      }
  
      public static String toJavaName(String name) {
  	return org.apache.xalan.xsltc.compiler.util.Util.toJavaName(name);
      }
  
       
  
      
      /**
       * Creates a SAX2 InputSource object from a TrAX Source object
       */
      public static InputSource getInputSource(XSLTC xsltc, Source source)
  	throws TransformerConfigurationException 
      {
  	InputSource input = null;
  
  	String systemId = source.getSystemId();         
  
  	try {
  	    // Try to get InputSource from SAXSource input
  	    if (source instanceof SAXSource) {
  		final SAXSource sax = (SAXSource)source;
  		input = sax.getInputSource();
  		// Pass the SAX parser to the compiler
                  try {
                      XMLReader reader = sax.getXMLReader();
  
                       /*
                        * Fix for bug 24695
                        * According to JAXP 1.2 specification if a SAXSource
                        * is created using a SAX InputSource the Transformer or
                        * TransformerFactory creates a reader via the
                        * XMLReaderFactory if setXMLReader is not used
                        */
  
                      if (reader == null) {
                         try {
                             reader= XMLReaderFactory.createXMLReader();
                         } catch (Exception e ) {
                             try {
  
                                 //Incase there is an exception thrown 
                                 // resort to JAXP 
                                 SAXParserFactory parserFactory = 
                                        SAXParserFactory.newInstance();
                                 parserFactory.setNamespaceAware(true);
                                 
                                 if (xsltc.isSecureProcessing()) {
                                    try {
                                        parserFactory.setFeature(
                                            XMLConstants.FEATURE_SECURE_PROCESSING, true);
                                    }
                                    catch (org.xml.sax.SAXException se) {}
                                 }
                                 
                                 reader = parserFactory.newSAXParser()
                                       .getXMLReader();
  
                                 
                             } catch (ParserConfigurationException pce ) {
                                 throw new TransformerConfigurationException
                                   ("ParserConfigurationException" ,pce);
                             }
                         }
                      }
                      reader.setFeature
                          ("http://xml.org/sax/features/namespaces",true);
                      reader.setFeature
                          ("http://xml.org/sax/features/namespace-prefixes",false);
  
                      xsltc.setXMLReader(reader);
                  }catch (SAXNotRecognizedException snre ) {
                    throw new TransformerConfigurationException
                         ("SAXNotRecognizedException ",snre);
                  }catch (SAXNotSupportedException snse ) {
                    throw new TransformerConfigurationException
                         ("SAXNotSupportedException ",snse);
                  }catch (SAXException se ) {
                    throw new TransformerConfigurationException
                         ("SAXException ",se);
                  }
  
  	    }
  	    // handle  DOMSource  
  	    else if (source instanceof DOMSource) {
  		final DOMSource domsrc = (DOMSource)source;
  		final Document dom = (Document)domsrc.getNode();
  		final DOM2SAX dom2sax = new DOM2SAX(dom);
  		xsltc.setXMLReader(dom2sax);  
  
  	        // Try to get SAX InputSource from DOM Source.
  		input = SAXSource.sourceToInputSource(source);
  		if (input == null){
  		    input = new InputSource(domsrc.getSystemId());
  		}
  	    }
  	    // Try to get InputStream or Reader from StreamSource
  	    else if (source instanceof StreamSource) {
  		final StreamSource stream = (StreamSource)source;
  		final InputStream istream = stream.getInputStream();
  		final Reader reader = stream.getReader();
                  xsltc.setXMLReader(null);     // Clear old XML reader
  
  		// Create InputSource from Reader or InputStream in Source
  		if (istream != null) {
  		    input = new InputSource(istream);
  		}
  		else if (reader != null) {
  		    input = new InputSource(reader);
  		}
  		else {
  		    input = new InputSource(systemId);
  		}
  	    }
  	    else {
  		ErrorMsg err = new ErrorMsg(ErrorMsg.JAXP_UNKNOWN_SOURCE_ERR);
  		throw new TransformerConfigurationException(err.toString());
  	    }
  	    input.setSystemId(systemId);
  	}
  	catch (NullPointerException e) {
   	    ErrorMsg err = new ErrorMsg(ErrorMsg.JAXP_NO_SOURCE_ERR,
  					"TransformerFactory.newTemplates()");
  	    throw new TransformerConfigurationException(err.toString());
  	}
  	catch (SecurityException e) {
   	    ErrorMsg err = new ErrorMsg(ErrorMsg.FILE_ACCESS_ERR, systemId);
  	    throw new TransformerConfigurationException(err.toString());
  	}
  	return input;
      }
  
  }
  
  