- /*
- * 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.xalan.templates;
-
- import java.util.Vector;
-
- import java.io.StringWriter;
- import java.io.PrintWriter;
- import java.io.IOException;
-
- import org.apache.xml.dtm.DTM;
- import org.apache.xml.dtm.DTMIterator;
- import org.apache.xml.dtm.DTMManager;
-
- import org.apache.xpath.NodeSetDTM;
- import org.apache.xpath.functions.Function;
- import org.apache.xpath.functions.Function2Args;
- import org.apache.xpath.functions.WrongNumberArgsException;
- import org.apache.xpath.objects.XObject;
- import org.apache.xpath.objects.XNodeSet;
- import org.apache.xpath.XPath;
- import org.apache.xpath.XPathContext;
- import org.apache.xpath.SourceTreeManager;
- import org.apache.xpath.Expression;
- import org.apache.xpath.XPathContext;
- import org.apache.xalan.res.XSLMessages;
- import org.apache.xalan.res.XSLTErrorResources;
- import org.apache.xpath.XPathContext;
- import org.apache.xalan.transformer.TransformerImpl;
-
- import org.xml.sax.InputSource;
- import org.xml.sax.Locator;
-
- import javax.xml.transform.TransformerException;
- import javax.xml.transform.SourceLocator;
- import javax.xml.transform.ErrorListener;
- import javax.xml.transform.Source;
-
- import org.apache.xml.utils.SAXSourceLocator;
- import org.apache.xml.utils.XMLString;
-
- /**
- * <meta name="usage" content="advanced"/>
- * Execute the Doc() function.
- *
- * When the document function has exactly one argument and the argument
- * is a node-set, then the result is the union, for each node in the
- * argument node-set, of the result of calling the document function with
- * the first argument being the string-value of the node, and the second
- * argument being a node-set with the node as its only member. When the
- * document function has two arguments and the first argument is a node-set,
- * then the result is the union, for each node in the argument node-set,
- * of the result of calling the document function with the first argument
- * being the string-value of the node, and with the second argument being
- * the second argument passed to the document function.
- */
- public class FuncDocument extends Function2Args
- {
-
- /**
- * 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
- {
- int context = xctxt.getCurrentNode();
- DTM dtm = xctxt.getDTM(context);
-
- int docContext = dtm.getDocumentRoot(context);
- XObject arg = (XObject) this.getArg0().execute(xctxt);
-
- String base = "";
- Expression arg1Expr = this.getArg1();
-
- if (null != arg1Expr)
- {
-
- // The URI reference may be relative. The base URI (see [3.2 Base URI])
- // of the node in the second argument node-set that is first in document
- // order is used as the base URI for resolving the
- // relative URI into an absolute URI.
- XObject arg2 = arg1Expr.execute(xctxt);
-
- if (XObject.CLASS_NODESET == arg2.getType())
- {
- int baseNode = arg2.iter().nextNode();
-
- if (baseNode == DTM.NULL)
- warn(xctxt, XSLTErrorResources.WG_EMPTY_SECOND_ARG, null);
-
- DTM baseDTM = xctxt.getDTM(baseNode);
- base = baseDTM.getDocumentBaseURI();
-
- // %REVIEW% This doesn't seem to be a problem with the conformance
- // suite, but maybe it's just not doing a good test?
- // int baseDoc = baseDTM.getDocument();
- //
- // if (baseDoc == DTM.NULL /* || baseDoc instanceof Stylesheet -->What to do?? */)
- // {
- //
- // // base = ((Stylesheet)baseDoc).getBaseIdentifier();
- // base = xctxt.getNamespaceContext().getBaseIdentifier();
- // }
- // else
- // base = xctxt.getSourceTreeManager().findURIFromDoc(baseDoc);
- }
- else
- {
- base = arg2.str();
- }
- }
- else
- {
-
- // If the second argument is omitted, then it defaults to
- // the node in the stylesheet that contains the expression that
- // includes the call to the document function. Note that a
- // zero-length URI reference is a reference to the document
- // relative to which the URI reference is being resolved; thus
- // document("") refers to the root node of the stylesheet;
- // the tree representation of the stylesheet is exactly
- // the same as if the XML document containing the stylesheet
- // was the initial source document.
- assertion(null != xctxt.getNamespaceContext(), "Namespace context can not be null!");
- base = xctxt.getNamespaceContext().getBaseIdentifier();
- }
-
- XNodeSet nodes = new XNodeSet(xctxt.getDTMManager());
- NodeSetDTM mnl = nodes.mutableNodeset();
- DTMIterator iterator = (XObject.CLASS_NODESET == arg.getType())
- ? arg.iter() : null;
- int pos = DTM.NULL;
-
- while ((null == iterator) || (DTM.NULL != (pos = iterator.nextNode())))
- {
- XMLString ref = (null != iterator)
- ? xctxt.getDTM(pos).getStringValue(pos) : arg.xstr();
-
- // The first and only argument was a nodeset, the base in that
- // case is the base URI of the node from the first argument nodeset.
- // Remember, when the document function has exactly one argument and
- // the argument is a node-set, then the result is the union, for each
- // node in the argument node-set, of the result of calling the document
- // function with the first argument being the string-value of the node,
- // and the second argument being a node-set with the node as its only
- // member.
- if (null == arg1Expr && DTM.NULL != pos)
- {
- DTM baseDTM = xctxt.getDTM(pos);
- base = baseDTM.getDocumentBaseURI();
- }
-
- if (null == ref)
- continue;
-
- if (DTM.NULL == docContext)
- {
- error(xctxt, XSLTErrorResources.ER_NO_CONTEXT_OWNERDOC, null); //"context does not have an owner document!");
- }
-
- // From http://www.ics.uci.edu/pub/ietf/uri/rfc1630.txt
- // A partial form can be distinguished from an absolute form in that the
- // latter must have a colon and that colon must occur before any slash
- // characters. Systems not requiring partial forms should not use any
- // unencoded slashes in their naming schemes. If they do, absolute URIs
- // will still work, but confusion may result.
- int indexOfColon = ref.indexOf(':');
- int indexOfSlash = ref.indexOf('/');
-
- if ((indexOfColon != -1) && (indexOfSlash != -1)
- && (indexOfColon < indexOfSlash))
- {
-
- // The url (or filename, for that matter) is absolute.
- base = null;
- }
-
- int newDoc = getDoc(xctxt, context, ref.toString(), base);
-
- // nodes.mutableNodeset().addNode(newDoc);
- if (DTM.NULL != newDoc)
- {
- // TODO: mnl.addNodeInDocOrder(newDoc, true, xctxt); ??
- if (!mnl.contains(newDoc))
- {
- mnl.addElement(newDoc);
- }
- }
-
- if (null == iterator || newDoc == DTM.NULL)
- break;
- }
-
- return nodes;
- }
-
- /**
- * Get the document from the given URI and base
- *
- * @param xctxt The XPath runtime state.
- * @param context The current context node
- * @param uri Relative(?) URI of the document
- * @param base Base to resolve relative URI from.
- *
- * @return The document Node pointing to the document at the given URI
- * or null
- *
- * @throws javax.xml.transform.TransformerException
- */
- int getDoc(XPathContext xctxt, int context, String uri, String base)
- throws javax.xml.transform.TransformerException
- {
-
- // System.out.println("base: "+base+", uri: "+uri);
- SourceTreeManager treeMgr = xctxt.getSourceTreeManager();
- Source source;
-
- int newDoc;
- try
- {
- source = treeMgr.resolveURI(base, uri, xctxt.getSAXLocator());
- newDoc = treeMgr.getNode(source);
- }
- catch (IOException ioe)
- {
- throw new TransformerException(ioe.getMessage(),
- (SourceLocator)xctxt.getSAXLocator(), ioe);
- }
- catch(TransformerException te)
- {
- throw new TransformerException(te);
- }
-
- if (DTM.NULL != newDoc)
- return newDoc;
-
- // If the uri length is zero, get the uri of the stylesheet.
- if (uri.length() == 0)
- {
- // Hmmm... this seems pretty bogus to me... -sb
- uri = xctxt.getNamespaceContext().getBaseIdentifier();
- try
- {
- source = treeMgr.resolveURI(base, uri, xctxt.getSAXLocator());
- }
- catch (IOException ioe)
- {
- throw new TransformerException(ioe.getMessage(),
- (SourceLocator)xctxt.getSAXLocator(), ioe);
- }
- }
-
- String diagnosticsString = null;
-
- try
- {
- if ((null != uri) && (uri.toString().length() > 0))
- {
- newDoc = treeMgr.getSourceTree(source, xctxt.getSAXLocator(), xctxt);
-
- // System.out.println("newDoc: "+((Document)newDoc).getDocumentElement().getNodeName());
- }
- else
- warn(xctxt, XSLTErrorResources.WG_CANNOT_MAKE_URL_FROM,
- new Object[]{ ((base == null) ? "" : base) + uri }); //"Can not make URL from: "+((base == null) ? "" : base )+uri);
- }
- catch (Throwable throwable)
- {
-
- // throwable.printStackTrace();
- newDoc = DTM.NULL;
-
- // path.warn(XSLTErrorResources.WG_ENCODING_NOT_SUPPORTED_USING_JAVA, new Object[]{((base == null) ? "" : base )+uri}); //"Can not load requested doc: "+((base == null) ? "" : base )+uri);
- while (throwable
- instanceof org.apache.xml.utils.WrappedRuntimeException)
- {
- throwable =
- ((org.apache.xml.utils.WrappedRuntimeException) throwable).getException();
- }
-
- if ((throwable instanceof NullPointerException)
- || (throwable instanceof ClassCastException))
- {
- throw new org.apache.xml.utils.WrappedRuntimeException(
- (Exception) throwable);
- }
-
- StringWriter sw = new StringWriter();
- PrintWriter diagnosticsWriter = new PrintWriter(sw);
-
- if (throwable instanceof TransformerException)
- {
- TransformerException spe = (TransformerException) throwable;
-
- {
- Throwable e = spe;
-
- while (null != e)
- {
- if (null != e.getMessage())
- {
- diagnosticsWriter.println(" (" + e.getClass().getName() + "): "
- + e.getMessage());
- }
-
- if (e instanceof TransformerException)
- {
- TransformerException spe2 = (TransformerException) e;
-
- SourceLocator locator = spe2.getLocator();
- if ((null != locator) && (null != locator.getSystemId()))
- diagnosticsWriter.println(" ID: " + locator.getSystemId()
- + " Line #" + locator.getLineNumber()
- + " Column #"
- + locator.getColumnNumber());
-
- e = spe2.getException();
-
- if (e instanceof org.apache.xml.utils.WrappedRuntimeException)
- e = ((org.apache.xml.utils.WrappedRuntimeException) e).getException();
- }
- else
- e = null;
- }
- }
- }
- else
- {
- diagnosticsWriter.println(" (" + throwable.getClass().getName()
- + "): " + throwable.getMessage());
- }
-
- diagnosticsString = throwable.getMessage(); //sw.toString();
- }
-
- if (DTM.NULL == newDoc)
- {
-
- // System.out.println("what?: "+base+", uri: "+uri);
- if (null != diagnosticsString)
- {
- warn(xctxt, XSLTErrorResources.WG_CANNOT_LOAD_REQUESTED_DOC,
- new Object[]{ diagnosticsString }); //"Can not load requested doc: "+((base == null) ? "" : base )+uri);
- }
- else
- warn(xctxt, XSLTErrorResources.WG_CANNOT_LOAD_REQUESTED_DOC,
- new Object[]{
- uri == null
- ? ((base == null) ? "" : base) + uri : uri.toString() }); //"Can not load requested doc: "+((base == null) ? "" : base )+uri);
- }
- else
- {
- // %REVIEW%
- // TBD: What to do about XLocator?
- // xctxt.getSourceTreeManager().associateXLocatorToNode(newDoc, url, null);
- }
-
- return newDoc;
- }
-
- /**
- * Tell the user of an error, and probably throw an
- * exception.
- *
- * @param xctxt The XPath runtime state.
- * @param msg The error message key
- * @param args Arguments to be used in the error message
- * @throws XSLProcessorException thrown if the active ProblemListener and XPathContext decide
- * the error condition is severe enough to halt processing.
- *
- * @throws javax.xml.transform.TransformerException
- */
- public void error(XPathContext xctxt, String msg, Object args[])
- throws javax.xml.transform.TransformerException
- {
-
- String formattedMsg = XSLMessages.createMessage(msg, args);
- ErrorListener errHandler = xctxt.getErrorListener();
- TransformerException spe = new TransformerException(formattedMsg,
- (SourceLocator)xctxt.getSAXLocator());
-
- if (null != errHandler)
- errHandler.error(spe);
- else
- System.out.println(formattedMsg);
- }
-
- /**
- * Warn the user of a problem.
- *
- * @param xctxt The XPath runtime state.
- * @param msg Warning message key
- * @param args Arguments to be used in the warning message
- * @throws XSLProcessorException thrown if the active ProblemListener and XPathContext decide
- * the error condition is severe enough to halt processing.
- *
- * @throws javax.xml.transform.TransformerException
- */
- public void warn(XPathContext xctxt, String msg, Object args[])
- throws javax.xml.transform.TransformerException
- {
-
- String formattedMsg = XSLMessages.createWarning(msg, args);
- ErrorListener errHandler = xctxt.getErrorListener();
- TransformerException spe = new TransformerException(formattedMsg,
- (SourceLocator)xctxt.getSAXLocator());
-
- if (null != errHandler)
- errHandler.warning(spe);
- else
- System.out.println(formattedMsg);
- }
-
- /**
- * Overide the superclass method to allow one or two arguments.
- *
- *
- * @param argNum Number of arguments passed in to this function
- *
- * @throws WrongNumberArgsException
- */
- public void checkNumberArgs(int argNum) throws WrongNumberArgsException
- {
- if ((argNum < 1) || (argNum > 2))
- reportWrongNumberArgs();
- }
-
- /**
- * Constructs and throws a WrongNumberArgException with the appropriate
- * message for this function object.
- *
- * @throws WrongNumberArgsException
- */
- protected void reportWrongNumberArgs() throws WrongNumberArgsException {
- throw new WrongNumberArgsException(XSLMessages.createMessage(XSLTErrorResources.ER_ONE_OR_TWO, null)); //"1 or 2");
- }
-
- /**
- * Tell if the expression is a nodeset expression. In other words, tell
- * if you can execute {@link asNode() asNode} without an exception.
- * @return true if the expression can be represented as a nodeset.
- */
- public boolean isNodesetExpr()
- {
- return true;
- }
-
- }