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Diffstat (limited to 'libjava/gnu/xml/transform/SAXSerializer.java')
| -rw-r--r-- | libjava/gnu/xml/transform/SAXSerializer.java | 305 |
1 files changed, 305 insertions, 0 deletions
diff --git a/libjava/gnu/xml/transform/SAXSerializer.java b/libjava/gnu/xml/transform/SAXSerializer.java new file mode 100644 index 0000000..c5e3820 --- /dev/null +++ b/libjava/gnu/xml/transform/SAXSerializer.java @@ -0,0 +1,305 @@ +/* SAXSerializer.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.HashMap; +import java.util.Iterator; +import java.util.LinkedList; +import org.w3c.dom.Attr; +import org.w3c.dom.DocumentType; +import org.w3c.dom.NamedNodeMap; +import org.w3c.dom.Node; +import org.xml.sax.Attributes; +import org.xml.sax.ContentHandler; +import org.xml.sax.SAXException; +import org.xml.sax.ext.LexicalHandler; + +/** + * Serializes a DOM node to a sequence of SAX events. + * + * @author <a href='mailto:dog@gnu.org'>Chris Burdess</a> + */ +class SAXSerializer + implements Attributes +{ + + transient NamedNodeMap attrs; + transient LinkedList namespaces = new LinkedList(); + + boolean isDefined(String prefix, String uri) + { + for (Iterator i = namespaces.iterator(); i.hasNext(); ) + { + HashMap ctx = (HashMap) i.next(); + if (uri.equals(ctx.get(prefix))) + { + return true; + } + } + return false; + } + + void define(String prefix, String uri) + { + for (Iterator i = namespaces.iterator(); i.hasNext(); ) + { + HashMap ctx = (HashMap) i.next(); + if (ctx.containsKey(prefix)) + { + HashMap newCtx = new HashMap(); + newCtx.put(prefix, uri); + namespaces.addFirst(newCtx); + return; + } + } + HashMap ctx; + if (namespaces.isEmpty()) + { + ctx = new HashMap(); + namespaces.add(ctx); + } + else + { + ctx = (HashMap) namespaces.getFirst(); + } + ctx.put(prefix, uri); + } + + void undefine(String prefix, String uri) + { + for (Iterator i = namespaces.iterator(); i.hasNext(); ) + { + HashMap ctx = (HashMap) i.next(); + if (uri.equals(ctx.get(prefix))) + { + ctx.remove(prefix); + if (ctx.isEmpty()) + { + namespaces.remove(ctx); + } + return; + } + } + } + + public int getLength() + { + return attrs.getLength(); + } + + public String getURI(int index) + { + return attrs.item(index).getNamespaceURI(); + } + + public String getLocalName(int index) + { + return attrs.item(index).getLocalName(); + } + + public String getQName(int index) + { + return attrs.item(index).getNodeName(); + } + + public String getType(int index) + { + Attr attr = (Attr) attrs.item(index); + return attr.isId() ? "ID" : "CDATA"; + } + + public String getValue(int index) + { + return attrs.item(index).getNodeValue(); + } + + public int getIndex(String uri, String localName) + { + int len = attrs.getLength(); + for (int i = 0; i < len; i++) + { + Node attr = attrs.item(i); + String a_uri = attr.getNamespaceURI(); + String a_localName = attr.getLocalName(); + if (((a_uri == null && uri == null) || + (a_uri != null && a_uri.equals(uri))) && + a_localName.equals(localName)) + { + return i; + } + } + return -1; + } + + public int getIndex(String qName) + { + int len = attrs.getLength(); + for (int i = 0; i < len; i++) + { + Node attr = attrs.item(i); + String a_name = attr.getNodeName(); + if (a_name.equals(qName)) + { + return i; + } + } + return -1; + } + + public String getType(String uri, String localName) + { + Attr attr = (Attr) attrs.getNamedItemNS(uri, localName); + return attr.isId() ? "ID" : "CDATA"; + } + + public String getType(String qName) + { + Attr attr = (Attr) attrs.getNamedItem(qName); + return attr.isId() ? "ID" : "CDATA"; + } + + public String getValue(String uri, String localName) + { + return attrs.getNamedItemNS(uri, localName).getNodeValue(); + } + + public String getValue(String qName) + { + return attrs.getNamedItem(qName).getNodeValue(); + } + + void serialize(Node node, ContentHandler ch, LexicalHandler lh) + throws SAXException + { + attrs = node.getAttributes(); + Node children; + Node next = node.getNextSibling(); + switch (node.getNodeType()) + { + case Node.ELEMENT_NODE: + String uri = node.getNamespaceURI(); + String prefix = node.getPrefix(); + boolean defined = isDefined(prefix, uri); + if (!defined) + { + define(prefix, uri); + ch.startPrefixMapping(prefix, uri); + } + String localName = node.getLocalName(); + String qName = node.getNodeName(); + ch.startElement(uri, localName, qName, this); + children = node.getFirstChild(); + if (children != null) + { + serialize(children, ch, lh); + } + ch.endElement(uri, localName, qName); + if (!defined) + { + ch.endPrefixMapping(prefix); + undefine(prefix, uri); + } + break; + case Node.TEXT_NODE: + char[] chars = node.getNodeValue().toCharArray(); + ch.characters(chars, 0, chars.length); + break; + case Node.CDATA_SECTION_NODE: + char[] cdata = node.getNodeValue().toCharArray(); + if (lh != null) + { + lh.startCDATA(); + ch.characters(cdata, 0, cdata.length); + lh.endCDATA(); + } + else + { + ch.characters(cdata, 0, cdata.length); + } + break; + case Node.COMMENT_NODE: + if (lh != null) + { + char[] comment = node.getNodeValue().toCharArray(); + lh.comment(comment, 0, comment.length); + } + break; + case Node.DOCUMENT_NODE: + case Node.DOCUMENT_FRAGMENT_NODE: + ch.startDocument(); + children = node.getFirstChild(); + if (children != null) + { + serialize(children, ch, lh); + } + ch.endDocument(); + break; + case Node.DOCUMENT_TYPE_NODE: + if (lh != null) + { + DocumentType doctype = (DocumentType) node; + String publicId = doctype.getPublicId(); + String systemId = doctype.getSystemId(); + lh.startDTD(node.getNodeName(), publicId, systemId); + NamedNodeMap entities = doctype.getEntities(); + int len = entities.getLength(); + for (int i = 0; i < len; i++) + { + Node entity = entities.item(i); + String entityName = entity.getNodeName(); + lh.startEntity(entityName); + lh.endEntity(entityName); + } + lh.endDTD(); + } + break; + case Node.PROCESSING_INSTRUCTION_NODE: + ch.processingInstruction(node.getNodeName(), node.getNodeValue()); + break; + case Node.ENTITY_REFERENCE_NODE: + ch.skippedEntity(node.getNodeName()); + break; + } + attrs = null; + if (next != null) + { + serialize(next, ch, lh); + } + } + +} |