| /* ElementNode.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.Collection; |
| import java.util.Collections; |
| import java.util.HashSet; |
| import java.util.Iterator; |
| import java.util.StringTokenizer; |
| import javax.xml.XMLConstants; |
| import javax.xml.namespace.QName; |
| import javax.xml.transform.TransformerException; |
| import org.w3c.dom.Document; |
| import org.w3c.dom.DocumentFragment; |
| import org.w3c.dom.Element; |
| import org.w3c.dom.NamedNodeMap; |
| import org.w3c.dom.Node; |
| import gnu.xml.xpath.Expr; |
| |
| /** |
| * A template node representing an XSL <code>element</code> instruction. |
| * |
| * @author <a href='mailto:dog@gnu.org'>Chris Burdess</a> |
| */ |
| final class ElementNode |
| extends TemplateNode |
| { |
| |
| final TemplateNode name; |
| final TemplateNode namespace; |
| final String uas; |
| final Node source; |
| final Collection elementExcludeResultPrefixes; |
| |
| ElementNode(TemplateNode children, TemplateNode next, TemplateNode name, |
| TemplateNode namespace, String uas, Node source) |
| { |
| super(children, next); |
| this.name = name; |
| this.namespace = namespace; |
| this.uas = uas; |
| this.source = source; |
| NamedNodeMap attrs = source.getAttributes(); |
| Node attr = attrs.getNamedItemNS(Stylesheet.XSL_NS, |
| "exclude-result-prefixes"); |
| if (attr != null) |
| { |
| elementExcludeResultPrefixes = new HashSet(); |
| StringTokenizer st = new StringTokenizer(attr.getNodeValue()); |
| while (st.hasMoreTokens()) |
| { |
| elementExcludeResultPrefixes.add(st.nextToken()); |
| } |
| } |
| else |
| { |
| elementExcludeResultPrefixes = Collections.EMPTY_SET; |
| } |
| } |
| |
| TemplateNode clone(Stylesheet stylesheet) |
| { |
| return new ElementNode((children == null) ? null : |
| children.clone(stylesheet), |
| (next == null) ? null : |
| next.clone(stylesheet), |
| name.clone(stylesheet), |
| (namespace == null) ? null : |
| namespace.clone(stylesheet), |
| uas, source); |
| } |
| |
| void doApply(Stylesheet stylesheet, QName mode, |
| Node context, int pos, int len, |
| Node parent, Node nextSibling) |
| throws TransformerException |
| { |
| Document doc = (parent instanceof Document) ? (Document) parent : |
| parent.getOwnerDocument(); |
| // Create a document fragment to hold the name |
| DocumentFragment fragment = doc.createDocumentFragment(); |
| // Apply name to the fragment |
| name.apply(stylesheet, mode, |
| context, pos, len, |
| fragment, null); |
| // Use XPath string-value of fragment |
| String nameValue = Expr.stringValue(fragment); |
| |
| String namespaceValue = null; |
| if (namespace != null) |
| { |
| // Create a document fragment to hold the namespace |
| fragment = doc.createDocumentFragment(); |
| // Apply namespace to the fragment |
| namespace.apply(stylesheet, mode, |
| context, pos, len, |
| fragment, null); |
| // Use XPath string-value of fragment |
| namespaceValue = Expr.stringValue(fragment); |
| if (namespaceValue.length() == 0) |
| { |
| namespaceValue = null; |
| } |
| } |
| |
| String prefix = getPrefix(nameValue); |
| if (XMLConstants.XMLNS_ATTRIBUTE.equals(prefix)) |
| { |
| int ci = nameValue.indexOf(':'); |
| nameValue = nameValue.substring(ci + 1); |
| } |
| else |
| { |
| // Namespace aliasing |
| if (prefix == null) |
| { |
| prefix = "#default"; |
| } |
| String resultPrefix = |
| (String) stylesheet.namespaceAliases.get(prefix); |
| if (resultPrefix != null) |
| { |
| if ("#default".equals(resultPrefix)) |
| { |
| resultPrefix = null; |
| } |
| namespaceValue = source.lookupNamespaceURI(resultPrefix); |
| } |
| if (prefix == "#default") |
| { |
| prefix = null; |
| } |
| // Look up ordinary namespace for this prefix |
| if (namespaceValue == null) |
| { |
| if (XMLConstants.XML_NS_PREFIX.equals(prefix)) |
| { |
| namespaceValue = XMLConstants.XML_NS_URI; |
| } |
| else |
| { |
| // Resolve namespace for this prefix |
| namespaceValue = source.lookupNamespaceURI(prefix); |
| } |
| } |
| /*if (prefix == null) |
| { |
| // Resolve prefix for this namespace |
| prefix = parent.lookupPrefix(namespaceValue); |
| if (prefix != null) |
| { |
| nameValue = prefix + ":" + nameValue; |
| } |
| }*/ |
| } |
| // Create element |
| Element element = (namespaceValue != null) ? |
| doc.createElementNS(namespaceValue, nameValue) : |
| doc.createElement(nameValue); |
| if (nextSibling != null) |
| { |
| parent.insertBefore(element, nextSibling); |
| } |
| else |
| { |
| parent.appendChild(element); |
| } |
| stylesheet.addNamespaceNodes(source, element, doc, |
| elementExcludeResultPrefixes); |
| if (uas != null) |
| { |
| StringTokenizer st = new StringTokenizer(uas, " "); |
| while (st.hasMoreTokens()) |
| { |
| addAttributeSet(stylesheet, mode, context, pos, len, |
| element, null, st.nextToken()); |
| } |
| } |
| if (children != null) |
| { |
| children.apply(stylesheet, mode, |
| context, pos, len, |
| element, null); |
| } |
| if (next != null) |
| { |
| next.apply(stylesheet, mode, |
| context, pos, len, |
| parent, nextSibling); |
| } |
| } |
| |
| final String getPrefix(String name) |
| { |
| int ci = name.indexOf(':'); |
| return (ci == -1) ? null : name.substring(0, ci); |
| } |
| |
| void addAttributeSet(Stylesheet stylesheet, QName mode, |
| Node context, int pos, int len, |
| Node parent, Node nextSibling, String attributeSet) |
| throws TransformerException |
| { |
| for (Iterator i = stylesheet.attributeSets.iterator(); i.hasNext(); ) |
| { |
| AttributeSet as = (AttributeSet) i.next(); |
| if (!as.name.equals(attributeSet)) |
| { |
| continue; |
| } |
| if (as.uas != null) |
| { |
| StringTokenizer st = new StringTokenizer(as.uas, " "); |
| while (st.hasMoreTokens()) |
| { |
| addAttributeSet(stylesheet, mode, context, pos, len, |
| parent, nextSibling, st.nextToken()); |
| } |
| } |
| if (as.children != null) |
| { |
| as.children.apply(stylesheet, mode, |
| context, pos, len, |
| parent, nextSibling); |
| } |
| } |
| } |
| |
| public String toString() |
| { |
| StringBuffer buf = new StringBuffer(getClass().getName()); |
| buf.append('['); |
| buf.append("name="); |
| buf.append(name); |
| if (uas != null) |
| { |
| buf.append(",uas="); |
| buf.append(uas); |
| } |
| buf.append(']'); |
| return buf.toString(); |
| } |
| |
| } |
