| /* |
| * reserved comment block |
| * DO NOT REMOVE OR ALTER! |
| */ |
| /* |
| * Copyright 2005 The Apache Software Foundation. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.sun.org.apache.xerces.internal.impl.xs.traversers; |
| |
| import com.sun.org.apache.xerces.internal.impl.xs.opti.SchemaDOMParser; |
| import com.sun.org.apache.xerces.internal.util.NamespaceSupport; |
| import com.sun.org.apache.xerces.internal.util.SAXLocatorWrapper; |
| import com.sun.org.apache.xerces.internal.util.SymbolTable; |
| import com.sun.org.apache.xerces.internal.util.XMLAttributesImpl; |
| import com.sun.org.apache.xerces.internal.util.XMLSymbols; |
| import com.sun.org.apache.xerces.internal.xni.NamespaceContext; |
| import com.sun.org.apache.xerces.internal.xni.QName; |
| import com.sun.org.apache.xerces.internal.xni.XMLString; |
| import com.sun.org.apache.xerces.internal.xni.XNIException; |
| import com.sun.org.apache.xerces.internal.xni.parser.XMLParseException; |
| import org.w3c.dom.Document; |
| import org.xml.sax.Attributes; |
| import org.xml.sax.ContentHandler; |
| import org.xml.sax.Locator; |
| import org.xml.sax.SAXException; |
| import org.xml.sax.SAXParseException; |
| import org.xml.sax.helpers.LocatorImpl; |
| |
| /** |
| * <p>SchemaContentHandler converts SAX events into XNI |
| * and passes them directly to the SchemaDOMParser.</p> |
| * |
| * @xerces.internal |
| * |
| * @author Michael Glavassevich, IBM |
| * @author Jack Z. Wang, IBM |
| * |
| */ |
| final class SchemaContentHandler implements ContentHandler { |
| |
| /** Symbol table **/ |
| private SymbolTable fSymbolTable; |
| |
| /** SchemaDOMParser, events will be delegated to SchemaDOMParser to pass */ |
| private SchemaDOMParser fSchemaDOMParser; |
| |
| /** XML Locator wrapper for SAX. **/ |
| private final SAXLocatorWrapper fSAXLocatorWrapper = new SAXLocatorWrapper(); |
| |
| /** The namespace context of this document: stores namespaces in scope */ |
| private NamespaceSupport fNamespaceContext = new NamespaceSupport(); |
| |
| /** Indicate if push NamespaceContest is needed */ |
| private boolean fNeedPushNSContext; |
| |
| /** Flag used to track whether namespace declarations are reported as attributes. */ |
| private boolean fNamespacePrefixes = false; |
| |
| /** Flag used to track whether XML names and Namespace URIs have been internalized. */ |
| private boolean fStringsInternalized = false; |
| |
| /** Fields for start element, end element and characters. */ |
| private final QName fElementQName = new QName(); |
| private final QName fAttributeQName = new QName(); |
| private final XMLAttributesImpl fAttributes = new XMLAttributesImpl(); |
| private final XMLString fTempString = new XMLString(); |
| |
| /** |
| * <p>Constructs an SchemaContentHandler.</p> |
| */ |
| public SchemaContentHandler() {} |
| |
| /* |
| * @see org.xml.sax.ContentHandler#setDocumentLocator(org.xml.sax.Locator) |
| */ |
| public Document getDocument() { |
| return fSchemaDOMParser.getDocument(); |
| } |
| |
| /* |
| * @see org.xml.sax.ContentHandler#setDocumentLocator(org.xml.sax.Locator) |
| */ |
| public void setDocumentLocator(Locator locator) { |
| fSAXLocatorWrapper.setLocator(locator); |
| } |
| |
| /* |
| * @see org.xml.sax.ContentHandler#startDocument() |
| */ |
| public void startDocument() throws SAXException { |
| fNeedPushNSContext = true; |
| try { |
| fSchemaDOMParser.startDocument(fSAXLocatorWrapper, null, fNamespaceContext, null); |
| } |
| catch (XMLParseException e) { |
| convertToSAXParseException(e); |
| } |
| catch (XNIException e) { |
| convertToSAXException(e); |
| } |
| } |
| |
| /* |
| * @see org.xml.sax.ContentHandler#endDocument() |
| */ |
| public void endDocument() throws SAXException { |
| fSAXLocatorWrapper.setLocator(null); |
| try { |
| fSchemaDOMParser.endDocument(null); |
| } |
| catch (XMLParseException e) { |
| convertToSAXParseException(e); |
| } |
| catch (XNIException e) { |
| convertToSAXException(e); |
| } |
| } |
| |
| /* |
| * @see org.xml.sax.ContentHandler#startPrefixMapping(java.lang.String, java.lang.String) |
| */ |
| public void startPrefixMapping(String prefix, String uri) throws SAXException { |
| if (fNeedPushNSContext) { |
| fNeedPushNSContext = false; |
| fNamespaceContext.pushContext(); |
| } |
| if (!fStringsInternalized) { |
| prefix = (prefix != null) ? fSymbolTable.addSymbol(prefix) : XMLSymbols.EMPTY_STRING; |
| uri = (uri != null && uri.length() > 0) ? fSymbolTable.addSymbol(uri) : null; |
| } |
| else { |
| if (prefix == null) { |
| prefix = XMLSymbols.EMPTY_STRING; |
| } |
| if (uri != null && uri.length() == 0) { |
| uri = null; |
| } |
| } |
| fNamespaceContext.declarePrefix(prefix, uri); |
| } |
| |
| /* |
| * @see org.xml.sax.ContentHandler#endPrefixMapping(java.lang.String) |
| */ |
| public void endPrefixMapping(String prefix) throws SAXException { |
| // do nothing |
| } |
| |
| /* |
| * @see org.xml.sax.ContentHandler#startElement(java.lang.String, java.lang.String, java.lang.String, org.xml.sax.Attributes) |
| */ |
| public void startElement(String uri, String localName, String qName, Attributes atts) throws SAXException { |
| if (fNeedPushNSContext) { |
| fNamespaceContext.pushContext(); |
| } |
| fNeedPushNSContext = true; |
| |
| // Fill element QName and XMLAttributes |
| fillQName(fElementQName, uri, localName, qName); |
| fillXMLAttributes(atts); |
| |
| // Add namespace declarations if necessary |
| if (!fNamespacePrefixes) { |
| final int prefixCount = fNamespaceContext.getDeclaredPrefixCount(); |
| if (prefixCount > 0) { |
| addNamespaceDeclarations(prefixCount); |
| } |
| } |
| |
| try { |
| fSchemaDOMParser.startElement(fElementQName, fAttributes, null); |
| } |
| catch (XMLParseException e) { |
| convertToSAXParseException(e); |
| } |
| catch (XNIException e) { |
| convertToSAXException(e); |
| } |
| } |
| |
| /* |
| * @see org.xml.sax.ContentHandler#endElement(java.lang.String, java.lang.String, java.lang.String) |
| */ |
| public void endElement(String uri, String localName, String qName) throws SAXException { |
| fillQName(fElementQName, uri, localName, qName); |
| try { |
| fSchemaDOMParser.endElement(fElementQName, null); |
| } |
| catch (XMLParseException e) { |
| convertToSAXParseException(e); |
| } |
| catch (XNIException e) { |
| convertToSAXException(e); |
| } |
| finally { |
| fNamespaceContext.popContext(); |
| } |
| } |
| |
| /* |
| * @see org.xml.sax.ContentHandler#characters(char[], int, int) |
| */ |
| public void characters(char[] ch, int start, int length) throws SAXException { |
| try { |
| fTempString.setValues(ch, start, length); |
| fSchemaDOMParser.characters(fTempString, null); |
| } |
| catch (XMLParseException e) { |
| convertToSAXParseException(e); |
| } |
| catch (XNIException e) { |
| convertToSAXException(e); |
| } |
| } |
| |
| /* |
| * @see org.xml.sax.ContentHandler#ignorableWhitespace(char[], int, int) |
| */ |
| public void ignorableWhitespace(char[] ch, int start, int length) throws SAXException { |
| try { |
| fTempString.setValues(ch, start, length); |
| fSchemaDOMParser.ignorableWhitespace(fTempString, null); |
| } |
| catch (XMLParseException e) { |
| convertToSAXParseException(e); |
| } |
| catch (XNIException e) { |
| convertToSAXException(e); |
| } |
| } |
| |
| /* |
| * @see org.xml.sax.ContentHandler#processingInstruction(java.lang.String, java.lang.String) |
| */ |
| public void processingInstruction(String target, String data) throws SAXException { |
| try { |
| fTempString.setValues(data.toCharArray(), 0, data.length()); |
| fSchemaDOMParser.processingInstruction(target, fTempString, null); |
| } |
| catch (XMLParseException e) { |
| convertToSAXParseException(e); |
| } |
| catch (XNIException e) { |
| convertToSAXException(e); |
| } |
| } |
| |
| /* |
| * @see org.xml.sax.ContentHandler#skippedEntity(java.lang.String) |
| */ |
| public void skippedEntity(String arg) throws SAXException { |
| // do-nothing |
| } |
| |
| /* |
| * Other methods |
| */ |
| |
| private void fillQName(QName toFill, String uri, String localpart, String rawname) { |
| if (!fStringsInternalized) { |
| uri = (uri != null && uri.length() > 0) ? fSymbolTable.addSymbol(uri) : null; |
| localpart = (localpart != null) ? fSymbolTable.addSymbol(localpart) : XMLSymbols.EMPTY_STRING; |
| rawname = (rawname != null) ? fSymbolTable.addSymbol(rawname) : XMLSymbols.EMPTY_STRING; |
| } |
| else { |
| if (uri != null && uri.length() == 0) { |
| uri = null; |
| } |
| if (localpart == null) { |
| localpart = XMLSymbols.EMPTY_STRING; |
| } |
| if (rawname == null) { |
| rawname = XMLSymbols.EMPTY_STRING; |
| } |
| } |
| String prefix = XMLSymbols.EMPTY_STRING; |
| int prefixIdx = rawname.indexOf(':'); |
| if (prefixIdx != -1) { |
| prefix = fSymbolTable.addSymbol(rawname.substring(0, prefixIdx)); |
| // local part may be an empty string if this is a namespace declaration |
| if (localpart == XMLSymbols.EMPTY_STRING) { |
| localpart = fSymbolTable.addSymbol(rawname.substring(prefixIdx + 1)); |
| } |
| } |
| // local part may be an empty string if this is a namespace declaration |
| else if (localpart == XMLSymbols.EMPTY_STRING) { |
| localpart = rawname; |
| } |
| toFill.setValues(prefix, localpart, rawname, uri); |
| } |
| |
| private void fillXMLAttributes(Attributes atts) { |
| fAttributes.removeAllAttributes(); |
| final int attrCount = atts.getLength(); |
| for (int i = 0; i < attrCount; ++i) { |
| fillQName(fAttributeQName, atts.getURI(i), atts.getLocalName(i), atts.getQName(i)); |
| String type = atts.getType(i); |
| fAttributes.addAttributeNS(fAttributeQName, (type != null) ? type : XMLSymbols.fCDATASymbol, atts.getValue(i)); |
| fAttributes.setSpecified(i, true); |
| } |
| } |
| |
| private void addNamespaceDeclarations(final int prefixCount) { |
| String prefix = null; |
| String localpart = null; |
| String rawname = null; |
| String nsPrefix = null; |
| String nsURI = null; |
| for (int i = 0; i < prefixCount; ++i) { |
| nsPrefix = fNamespaceContext.getDeclaredPrefixAt(i); |
| nsURI = fNamespaceContext.getURI(nsPrefix); |
| if (nsPrefix.length() > 0) { |
| prefix = XMLSymbols.PREFIX_XMLNS; |
| localpart = nsPrefix; |
| rawname = fSymbolTable.addSymbol(prefix + ":" + localpart); |
| } |
| else { |
| prefix = XMLSymbols.EMPTY_STRING; |
| localpart = XMLSymbols.PREFIX_XMLNS; |
| rawname = XMLSymbols.PREFIX_XMLNS; |
| } |
| fAttributeQName.setValues(prefix, localpart, rawname, NamespaceContext.XMLNS_URI); |
| fAttributes.addAttribute(fAttributeQName, XMLSymbols.fCDATASymbol, nsURI); |
| } |
| } |
| |
| public void reset(SchemaDOMParser schemaDOMParser, SymbolTable symbolTable, |
| boolean namespacePrefixes, boolean stringsInternalized) { |
| fSchemaDOMParser = schemaDOMParser; |
| fSymbolTable = symbolTable; |
| fNamespacePrefixes = namespacePrefixes; |
| fStringsInternalized = stringsInternalized; |
| } |
| |
| /* |
| * Static methods |
| */ |
| |
| static void convertToSAXParseException(XMLParseException e) throws SAXException { |
| Exception ex = e.getException(); |
| if (ex == null) { |
| // must be a parser exception; mine it for locator info and throw |
| // a SAXParseException |
| LocatorImpl locatorImpl = new LocatorImpl(); |
| locatorImpl.setPublicId(e.getPublicId()); |
| locatorImpl.setSystemId(e.getExpandedSystemId()); |
| locatorImpl.setLineNumber(e.getLineNumber()); |
| locatorImpl.setColumnNumber(e.getColumnNumber()); |
| throw new SAXParseException(e.getMessage(), locatorImpl); |
| } |
| if (ex instanceof SAXException) { |
| // why did we create an XMLParseException? |
| throw (SAXException) ex; |
| } |
| throw new SAXException(ex); |
| } |
| |
| static void convertToSAXException(XNIException e) throws SAXException { |
| Exception ex = e.getException(); |
| if (ex == null) { |
| throw new SAXException(e.getMessage()); |
| } |
| if (ex instanceof SAXException) { |
| throw (SAXException) ex; |
| } |
| throw new SAXException(ex); |
| } |
| |
| } // SchemaContentHandler |
