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Diffstat (limited to 'libjava/classpath/gnu/xml/dom/ls/DomLSParser.java')
| -rw-r--r-- | libjava/classpath/gnu/xml/dom/ls/DomLSParser.java | 567 |
1 files changed, 567 insertions, 0 deletions
diff --git a/libjava/classpath/gnu/xml/dom/ls/DomLSParser.java b/libjava/classpath/gnu/xml/dom/ls/DomLSParser.java new file mode 100644 index 000000000..99db79d64 --- /dev/null +++ b/libjava/classpath/gnu/xml/dom/ls/DomLSParser.java @@ -0,0 +1,567 @@ +/* DomLSParser.java -- + Copyright (C) 1999,2000,2001,2007 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.io.File; +import java.io.InputStream; +import java.io.IOException; +import java.net.MalformedURLException; +import java.net.URL; +import java.util.Arrays; +import java.util.List; +import javax.xml.parsers.ParserConfigurationException; +import javax.xml.parsers.SAXParser; +import javax.xml.parsers.SAXParserFactory; +import org.w3c.dom.Document; +import org.w3c.dom.DOMConfiguration; +import org.w3c.dom.DOMException; +import org.w3c.dom.DOMStringList; +import org.w3c.dom.Node; +import org.w3c.dom.ls.DOMImplementationLS; +import org.w3c.dom.ls.LSException; +import org.w3c.dom.ls.LSInput; +import org.w3c.dom.ls.LSParser; +import org.w3c.dom.ls.LSParserFilter; +import org.xml.sax.EntityResolver; +import org.xml.sax.ErrorHandler; +import org.xml.sax.InputSource; +import org.xml.sax.SAXException; +import org.xml.sax.SAXNotRecognizedException; +import org.xml.sax.SAXParseException; +import org.xml.sax.XMLReader; +import gnu.xml.dom.DomDocument; +import gnu.xml.dom.DomDOMException; + +/** + * Parser implementation for GNU DOM. + * + * @author <a href='mailto:dog@gnu.org'>Chris Burdess</a> + */ +public class DomLSParser + implements LSParser, DOMConfiguration, DOMStringList, ErrorHandler +{ + + private static final List SUPPORTED_PARAMETERS + = Arrays.asList(new String[] { "cdata-sections", + "comments", + "element-content-whitespace", + "namespaces", + "expand-entity-references", + "coalescing", + "validating", + "xinclude-aware", + "entity-resolver", + "error-handler" }); + + private LSParserFilter filter; + private final boolean async; + private String schemaType; + private SAXEventSink eventSink; + private SAXParserFactory factory; + private XMLReader reader; + + private boolean namespaceAware = true; + private boolean ignoreWhitespace; + private boolean expandEntityReferences; + private boolean ignoreComments; + private boolean coalescing; + private boolean validating; + private boolean xIncludeAware; + private EntityResolver entityResolver; + private ErrorHandler errorHandler; + + public DomLSParser(short mode, String schemaType) + throws DOMException + { + switch (mode) + { + case DOMImplementationLS.MODE_ASYNCHRONOUS: + async = true; + break; + case DOMImplementationLS.MODE_SYNCHRONOUS: + async = false; + break; + default: + throw new DomDOMException(DOMException.NOT_SUPPORTED_ERR); + } + // TODO schemaType + this.schemaType = schemaType; + factory = SAXParserFactory.newInstance(); + } + + // -- LSParser -- + + public DOMConfiguration getDomConfig() + { + return this; + } + + public LSParserFilter getFilter() + { + return filter; + } + + public void setFilter(LSParserFilter filter) + { + this.filter = filter; + } + + public boolean getAsync() + { + return async; + } + + public boolean getBusy() + { + return eventSink != null; + } + + public Document parse(LSInput input) + throws DOMException, LSException + { + if (async) + { + return doParse(input); + } + else + { + synchronized (this) + { + return doParse(input); + } + } + } + + public Document parseURI(String uri) + throws DOMException, LSException + { + LSInput input = new DomLSInput(); + input.setSystemId(uri); + return parse(input); + } + + public Node parseWithContext(LSInput input, Node context, short action) + throws DOMException, LSException + { + Document doc = (context.getNodeType() == Node.DOCUMENT_NODE) ? + (Document) context : context.getOwnerDocument(); + input.setBaseURI(doc.getDocumentURI()); + // TODO use namespaces defined on context node + Document ret = parse(input); + Node root = ret.getDocumentElement(); + root = doc.adoptNode(root); + switch (action) + { + case ACTION_APPEND_AS_CHILDREN: + context.appendChild(root); + break; + case ACTION_REPLACE_CHILDREN: + Node c1 = context.getFirstChild(); + while (c1 != null) + { + Node next = c1.getNextSibling(); + context.removeChild(c1); + c1 = next; + } + context.appendChild(root); + break; + case ACTION_INSERT_BEFORE: + Node p1 = context.getParentNode(); + p1.insertBefore(root, context); + break; + case ACTION_INSERT_AFTER: + Node p2 = context.getParentNode(); + Node r1 = context.getNextSibling(); + if (r1 == null) + { + p2.appendChild(root); + } + else + { + p2.insertBefore(root, r1); + } + break; + case ACTION_REPLACE: + Node p3 = context.getParentNode(); + Node r2 = context.getNextSibling(); + p3.removeChild(context); + if (r2 == null) + { + p3.appendChild(root); + } + else + { + p3.insertBefore(root, r2); + } + break; + } + return root; + } + + public void abort() + { + if (eventSink != null) + { + eventSink.interrupt(); + } + } + + private Document doParse(LSInput input) + throws DOMException, LSException + { + // create event sink + if (eventSink != null) + { + throw new LSException(LSException.PARSE_ERR, "parse in progress"); + } + InputSource source = getInputSource(input); + eventSink = (filter == null) ? new SAXEventSink() : + new FilteredSAXEventSink(filter); + // configure sink + eventSink.setNamespaceAware(namespaceAware); + eventSink.ignoreWhitespace = ignoreWhitespace; + eventSink.expandEntityReferences = expandEntityReferences; + eventSink.ignoreComments = ignoreComments; + eventSink.coalescing = coalescing; + // get and configure reader + XMLReader reader = getXMLReader(); + eventSink.reader = reader; + try + { + reader.setContentHandler(eventSink); + reader.setDTDHandler(eventSink); + reader.setProperty("http://xml.org/sax/properties/lexical-handler", + eventSink); + reader.setProperty("http://xml.org/sax/properties/declaration-handler", + eventSink); + reader.setFeature("http://xml.org/sax/features/namespaces", + namespaceAware); + reader.setFeature("http://xml.org/sax/features/namespace-prefixes", + true); + reader.setFeature("http://xml.org/sax/features/validation", + validating); + try + { + reader.setFeature("http://gnu.org/sax/features/coalescing", + coalescing); + } + catch (SAXNotRecognizedException e) + { + // ignore + } + try + { + reader.setFeature("http://xml.org/sax/features/use-attributes2", + true); + } + catch (SAXNotRecognizedException e) + { + // ignore + } + try + { + reader.setFeature("http://xml.org/sax/features/external-general-entities", + true); + } + catch (SAXNotRecognizedException e) + { + // ignore + } + reader.setEntityResolver(entityResolver); + reader.setErrorHandler(errorHandler); + // parse + reader.parse(source); + } + catch (DOMException e) + { + reader = null; + eventSink = null; + throw e; + } + catch (SAXException e) + { + reader = null; + eventSink = null; + throw new DomLSException(LSException.PARSE_ERR, e); + } + catch (IOException e) + { + reader = null; + eventSink = null; + throw new DomLSException(LSException.PARSE_ERR, e); + } + // return document + Document ret = eventSink.doc; + String systemId = input.getSystemId(); + if (systemId != null && ret instanceof DomDocument) + { + ((DomDocument) ret).setDocumentURI(systemId); + } + eventSink = null; + return ret; + } + + private XMLReader getXMLReader() + throws LSException + { + if (reader == null) + { + factory.setNamespaceAware(namespaceAware); + factory.setValidating(validating); + factory.setXIncludeAware(xIncludeAware); + try + { + SAXParser parser = factory.newSAXParser(); + reader = parser.getXMLReader(); + } + catch (ParserConfigurationException e) + { + throw new DomLSException(LSException.PARSE_ERR, e); + } + catch (SAXException e) + { + throw new DomLSException(LSException.PARSE_ERR, e); + } + } + return reader; + } + + private InputSource getInputSource(LSInput input) + throws LSException + { + InputSource source = null; + String systemId = input.getSystemId(); + InputStream in = input.getByteStream(); + if (in != null) + { + source = new InputSource(in); + source.setSystemId(systemId); + } + if (source == null) + { + URL url = null; + String base = input.getBaseURI(); + try + { + try + { + URL baseURL = (base == null) ? null : new URL(base); + url = (baseURL == null) ? new URL(systemId) : + new URL(baseURL, systemId); + } + catch (MalformedURLException e) + { + File baseFile = (base == null) ? null : new File(base); + url = (baseFile == null) ? new File(systemId).toURL() : + new File(baseFile, systemId).toURL(); + } + in = url.openStream(); + systemId = url.toString(); + source = new InputSource(in); + source.setSystemId(systemId); + } + catch (IOException e) + { + throw new DomLSException(LSException.PARSE_ERR, e); + } + } + return source; + } + + // -- DOMConfiguration -- + + public void setParameter(String name, Object value) + throws DOMException + { + name = name.toLowerCase(); + if ("cdata-sections".equals(name)) + { + coalescing = !((Boolean) value).booleanValue(); + } + else if ("comments".equals(name)) + { + ignoreComments = !((Boolean) value).booleanValue(); + } + else if ("element-content-whitespace".equals(name)) + { + ignoreWhitespace = !((Boolean) value).booleanValue(); + } + else if ("namespaces".equals(name)) + { + namespaceAware = ((Boolean) value).booleanValue(); + } + else if ("expand-entity-references".equals(name)) + { + expandEntityReferences = ((Boolean) value).booleanValue(); + } + else if ("coalescing".equals(name)) + { + coalescing = ((Boolean) value).booleanValue(); + } + else if ("validating".equals(name)) + { + validating = ((Boolean) value).booleanValue(); + } + else if ("xinclude-aware".equals(name)) + { + xIncludeAware = ((Boolean) value).booleanValue(); + } + else if ("entity-resolver".equals(name)) + { + entityResolver = (EntityResolver) value; + } + else if ("error-handler".equals(name)) + { + errorHandler = (ErrorHandler) value; + } + else + { + throw new DomDOMException(DOMException.NOT_SUPPORTED_ERR); + } + // invalidate reader, a new one will be created + reader = null; + } + + public Object getParameter(String name) + throws DOMException + { + name = name.toLowerCase(); + if ("cdata-sections".equals(name)) + { + return coalescing ? Boolean.FALSE : Boolean.TRUE; + } + else if ("comments".equals(name)) + { + return ignoreComments ? Boolean.FALSE : Boolean.TRUE; + } + else if ("element-content-whitespace".equals(name)) + { + return ignoreWhitespace ? Boolean.FALSE : Boolean.TRUE; + } + else if ("namespaces".equals(name)) + { + return namespaceAware ? Boolean.TRUE : Boolean.FALSE; + } + else if ("expand-entity-references".equals(name)) + { + return expandEntityReferences ? Boolean.TRUE : Boolean.FALSE; + } + else if ("coalescing".equals(name)) + { + return coalescing ? Boolean.TRUE : Boolean.FALSE; + } + else if ("validating".equals(name)) + { + return validating ? Boolean.TRUE : Boolean.FALSE; + } + else if ("xinclude-aware".equals(name)) + { + return xIncludeAware ? Boolean.TRUE : Boolean.FALSE; + } + else if ("entity-resolver".equals(name)) + { + return entityResolver; + } + else if ("error-handler".equals(name)) + { + return errorHandler; + } + else + { + throw new DomDOMException(DOMException.NOT_SUPPORTED_ERR); + } + } + + public boolean canSetParameter(String name, Object value) + { + return contains(name); + } + + public DOMStringList getParameterNames() + { + return this; + } + + // -- DOMStringList -- + + public String item(int i) + { + return (String) SUPPORTED_PARAMETERS.get(i); + } + + public int getLength() + { + return SUPPORTED_PARAMETERS.size(); + } + + public boolean contains(String str) + { + return SUPPORTED_PARAMETERS.contains(str); + } + + // -- ErrorHandler -- + + public void warning(SAXParseException e) + throws SAXException + { + if (errorHandler != null) + { + errorHandler.warning(e); + } + } + + public void error(SAXParseException e) + throws SAXException + { + if (errorHandler != null) + { + errorHandler.error(e); + } + } + + public void fatalError(SAXParseException e) + throws SAXException + { + if (errorHandler != null) + { + errorHandler.fatalError(e); + } + abort(); + } + +} |