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Diffstat (limited to 'libjava/classpath/gnu/xml/transform/ElementNode.java')
| -rw-r--r-- | libjava/classpath/gnu/xml/transform/ElementNode.java | 261 |
1 files changed, 261 insertions, 0 deletions
diff --git a/libjava/classpath/gnu/xml/transform/ElementNode.java b/libjava/classpath/gnu/xml/transform/ElementNode.java new file mode 100644 index 000000000..78a2007b7 --- /dev/null +++ b/libjava/classpath/gnu/xml/transform/ElementNode.java @@ -0,0 +1,261 @@ +/* ElementNode.java -- + Copyright (C) 2004,2006 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., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 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 gnu.java.lang.CPStringBuilder; + +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 name, + TemplateNode namespace, String uas, Node source) + { + 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) + { + TemplateNode ret = new ElementNode(name.clone(stylesheet), + (namespace == null) ? null : + namespace.clone(stylesheet), + uas, source); + if (children != null) + ret.children = children.clone(stylesheet); + if (next != null) + ret.next = next.clone(stylesheet); + return ret; + } + + 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; + } + else + { + 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); + } + } + } + } + + // 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 + { + stylesheet.bindings.global = true; + 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); + } + stylesheet.bindings.global = false; + } + + public boolean references(QName var) + { + if (name != null && name.references(var)) + return true; + if (namespace != null && namespace.references(var)) + return true; + return super.references(var); + } + + public String toString() + { + CPStringBuilder buf = new CPStringBuilder("element"); + buf.append('['); + buf.append("name="); + if (namespace != null) + { + buf.append(",namespace="); + buf.append(namespace); + } + buf.append(name); + if (uas != null) + { + buf.append(",uas="); + buf.append(uas); + } + buf.append(']'); + return buf.toString(); + } + +} |