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Diffstat (limited to 'libjava/classpath/gnu/xml/dom/ls/SAXEventSink.java')
| -rw-r--r-- | libjava/classpath/gnu/xml/dom/ls/SAXEventSink.java | 557 |
1 files changed, 557 insertions, 0 deletions
diff --git a/libjava/classpath/gnu/xml/dom/ls/SAXEventSink.java b/libjava/classpath/gnu/xml/dom/ls/SAXEventSink.java new file mode 100644 index 00000000000..a850460b1e2 --- /dev/null +++ b/libjava/classpath/gnu/xml/dom/ls/SAXEventSink.java @@ -0,0 +1,557 @@ +/* SAXEventSink.java -- + Copyright (C) 1999,2000,2001 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.dom.ls; + +import java.util.Iterator; +import java.util.LinkedList; +import java.util.List; +import javax.xml.XMLConstants; +import org.w3c.dom.Attr; +import org.w3c.dom.DocumentType; +import org.w3c.dom.Element; +import org.w3c.dom.Entity; +import org.w3c.dom.NamedNodeMap; +import org.w3c.dom.Node; +import org.w3c.dom.Text; +import org.xml.sax.Attributes; +import org.xml.sax.DTDHandler; +import org.xml.sax.Locator; +import org.xml.sax.SAXException; +import org.xml.sax.ext.Attributes2; +import org.xml.sax.ext.DeclHandler; +import org.xml.sax.ext.LexicalHandler; +import gnu.xml.aelfred2.ContentHandler2; +import gnu.xml.dom.DomAttr; +import gnu.xml.dom.DomDocument; +import gnu.xml.dom.DomDoctype; + +/** + * A SAX content and lexical handler used to construct a DOM document. + * + * @author <a href='mailto:dog@gnu.org'>Chris Burdess</a> + */ +class SAXEventSink + implements ContentHandler2, LexicalHandler, DTDHandler, DeclHandler +{ + + private static final String XMLNS_URI = XMLConstants.XMLNS_ATTRIBUTE_NS_URI; + private static final String XMLNS_PREFIX = XMLConstants.XMLNS_ATTRIBUTE; + + boolean namespaceAware; + boolean ignoreWhitespace; + boolean expandEntityReferences; + boolean ignoreComments; + boolean coalescing; + + DomDocument doc; // document being constructed + Node ctx; // current context (parent node) + LinkedList entityCtx; // entity context + List pending; // namespace nodes waiting for a declaring element + Locator locator; + boolean inCDATA; + boolean inDTD; + boolean interrupted; + + void interrupt() + { + interrupted = true; + } + + // -- ContentHandler2 -- + + public void setDocumentLocator(Locator locator) + { + this.locator = locator; + } + + public void startDocument() + throws SAXException + { + if (namespaceAware) + { + pending = new LinkedList(); + } + doc = new DomDocument(); + doc.setStrictErrorChecking(false); + doc.setBuilding(true); + ctx = doc; + } + + public void xmlDecl(String version, String encoding, boolean standalone, + String inputEncoding) + throws SAXException + { + if (interrupted) + { + return; + } + doc.setXmlVersion(version); + doc.setXmlEncoding(encoding); + doc.setXmlStandalone(standalone); + doc.setInputEncoding(inputEncoding); + } + + public void endDocument() + throws SAXException + { + doc.setStrictErrorChecking(true); + doc.setBuilding(false); + DomDoctype doctype = (DomDoctype) doc.getDoctype(); + if (doctype != null) + { + doctype.makeReadonly(); + } + ctx = null; + locator = null; + } + + public void startPrefixMapping(String prefix, String uri) + throws SAXException + { + if (namespaceAware) + { + String nsName = (prefix != null && prefix.length() > 0) ? + XMLNS_PREFIX + ":" + prefix : XMLNS_PREFIX; + DomAttr ns = (DomAttr) doc.createAttributeNS(XMLNS_URI, nsName); + ns.setNodeValue(uri); + if (ctx.getNodeType() == Node.ATTRIBUTE_NODE) + { + // Add to owner element + Node target = ((Attr) ctx).getOwnerElement(); + target.getAttributes().setNamedItemNS(ns); + } + else + { + // Add to pending list; namespace node will be inserted when + // element is seen + pending.add(ns); + } + } + } + + public void endPrefixMapping(String prefix) + throws SAXException + { + } + + public void startElement(String uri, String localName, String qName, + Attributes atts) + throws SAXException + { + if (interrupted) + { + return; + } + Element element = createElement(uri, localName, qName, atts); + // add element to context + ctx.appendChild(element); + ctx = element; + } + + protected Element createElement(String uri, String localName, String qName, + Attributes atts) + throws SAXException + { + // create element node + Element element = namespaceAware ? + doc.createElementNS(uri, qName) : + doc.createElement(qName); + NamedNodeMap attrs = element.getAttributes(); + if (namespaceAware && !pending.isEmpty()) + { + // add pending namespace nodes + for (Iterator i = pending.iterator(); i.hasNext(); ) + { + Node ns = (Node) i.next(); + attrs.setNamedItemNS(ns); + } + pending.clear(); + } + // add attributes + int len = atts.getLength(); + for (int i = 0; i < len; i++) + { + // create attribute + Attr attr = createAttr(atts, i); + if (attr != null) + { + // add attribute to element + if (namespaceAware) + { + attrs.setNamedItemNS(attr); + } + else + { + attrs.setNamedItem(attr); + } + } + } + return element; + } + + protected Attr createAttr(Attributes atts, int index) + { + DomAttr attr; + if (namespaceAware) + { + String a_uri = atts.getURI(index); + String a_qName = atts.getQName(index); + attr = (DomAttr) doc.createAttributeNS(a_uri, a_qName); + } + else + { + String a_qName = atts.getQName(index); + attr = (DomAttr) doc.createAttribute(a_qName); + } + attr.setNodeValue(atts.getValue(index)); + if (atts instanceof Attributes2) + { + Attributes2 atts2 = (Attributes2) atts; + // TODO attr.setDeclared(atts2.isDeclared(index)); + attr.setSpecified(atts2.isSpecified(index)); + } + return attr; + } + + public void endElement(String uri, String localName, String qName) + throws SAXException + { + if (interrupted) + { + return; + } + if (namespaceAware) + { + pending.clear(); + } + ctx = ctx.getParentNode(); + } + + public void characters(char[] c, int off, int len) + throws SAXException + { + if (interrupted) + { + return; + } + ctx.appendChild(createText(c, off, len)); + } + + protected Text createText(char[] c, int off, int len) + throws SAXException + { + Text text = (inCDATA && !coalescing) ? + doc.createCDATASection(new String(c, off, len)) : + doc.createTextNode(new String(c, off, len)); + return text; + } + + public void ignorableWhitespace(char[] c, int off, int len) + throws SAXException + { + if (interrupted) + { + return; + } + if (!ignoreWhitespace) + { + characters(c, off, len); + } + } + + public void processingInstruction(String target, String data) + throws SAXException + { + if (interrupted) + { + return; + } + if (!inDTD) + { + Node pi = createProcessingInstruction(target, data); + ctx.appendChild(pi); + } + } + + protected Node createProcessingInstruction(String target, String data) + { + return doc.createProcessingInstruction(target, data); + } + + public void skippedEntity(String name) + throws SAXException + { + // This callback is totally pointless + } + + // -- LexicalHandler -- + + public void startDTD(String name, String publicId, String systemId) + throws SAXException + { + if (interrupted) + { + return; + } + Node doctype = createDocumentType(name, publicId, systemId); + doc.appendChild(doctype); + ctx = doctype; + inDTD = true; + } + + protected Node createDocumentType(String name, String publicId, + String systemId) + { + return new DomDoctype(doc, name, publicId, systemId); + } + + public void endDTD() + throws SAXException + { + if (interrupted) + { + return; + } + inDTD = false; + ctx = ctx.getParentNode(); + } + + public void startEntity(String name) + throws SAXException + { + DocumentType doctype = doc.getDoctype(); + if (doctype == null) + { + throw new SAXException("SAX parser error: " + + "reference to entity in undeclared doctype"); + } + if ("[dtd]".equals(name) || name.charAt(0) == '%') + { + // Ignore DTD and parameter entities + ctx = doctype; + return; + } + if ("lt".equals(name) || + "gt".equals(name) || + "amp".equals(name) || + "apos".equals(name) || + "quot".equals(name)) + { + return; + } + // Get entity + NamedNodeMap entities = doctype.getEntities(); + Entity entity = (Entity) entities.getNamedItem(name); + if (entity == null) + { + throw new SAXException("SAX parser error: " + + "reference to undeclared entity: " + name); + } + pushEntity(entity); + } + + public void endEntity(String name) + throws SAXException + { + if ("[dtd]".equals(name) || name.charAt(0) == '%') + { + // Ignore DTD and parameter entities + return; + } + if ("lt".equals(name) || + "gt".equals(name) || + "amp".equals(name) || + "apos".equals(name) || + "quot".equals(name)) + { + return; + } + // Get entity + Entity entity = popEntity(); + // TODO resolve external entities to ensure that entity has content + if (expandEntityReferences) + { + // Get entity content + for (Node child = entity.getFirstChild(); child != null; + child = child.getNextSibling()) + { + ctx.appendChild(child); + } + } + else + { + Node entityReference = doc.createEntityReference(name); + ctx.appendChild(entityReference); + } + } + + void pushEntity(Node entity) + { + if (entityCtx == null) + { + entityCtx = new LinkedList(); + } + entityCtx.addLast(ctx); + ctx = entity; + } + + Entity popEntity() + { + Entity ret = (Entity) ctx; + ctx = (Node) entityCtx.removeLast(); + return ret; + } + + public void startCDATA() + throws SAXException + { + inCDATA = true; + } + + public void endCDATA() + throws SAXException + { + inCDATA = false; + } + + public void comment(char[] c, int off, int len) + throws SAXException + { + if (interrupted) + { + return; + } + if (!inDTD) + { + Node comment = createComment(c, off, len); + ctx.appendChild(comment); + } + } + + protected Node createComment(char[] c, int off, int len) + { + return doc.createComment(new String(c, off, len)); + } + + // -- DTDHandler -- + + public void notationDecl(String name, String publicId, String systemId) + throws SAXException + { + if (interrupted) + { + return; + } + DomDoctype doctype = (DomDoctype) ctx; + doctype.declareNotation(name, publicId, systemId); + } + + public void unparsedEntityDecl(String name, String publicId, String systemId, + String notationName) + throws SAXException + { + if (interrupted) + { + return; + } + DomDoctype doctype = (DomDoctype) ctx; + Entity entity = doctype.declareEntity(name, publicId, systemId, + notationName); + } + + // -- DeclHandler -- + + public void elementDecl(String name, String model) + throws SAXException + { + if (interrupted) + { + return; + } + // Ignore fake element declarations generated by ValidationConsumer. + // If an element is not really declared in the DTD it will not be + // declared in the document model. + if (!(ctx instanceof DomDoctype)) + { + return; + } + DomDoctype doctype = (DomDoctype) ctx; + doctype.elementDecl(name, model); + } + + public void attributeDecl(String eName, String aName, String type, + String mode, String value) + throws SAXException + { + if (interrupted) + { + return; + } + DomDoctype doctype = (DomDoctype) ctx; + doctype.attributeDecl(eName, aName, type, mode, value); + } + + public void internalEntityDecl(String name, String value) + throws SAXException + { + if (interrupted) + { + return; + } + DomDoctype doctype = (DomDoctype) ctx; + Entity entity = doctype.declareEntity(name, null, null, null); + if (entity != null) + { + Node text = doc.createTextNode(value); + entity.appendChild(text); + } + } + + public void externalEntityDecl(String name, String publicId, String systemId) + throws SAXException + { + if (interrupted) + { + return; + } + DomDoctype doctype = (DomDoctype) ctx; + Entity entity = doctype.declareEntity(name, publicId, systemId, null); + } + +} + |
