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This module contains the Metro runtime code.
/*
* Copyright (c) 2005, 2018 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Distribution License v. 1.0, which is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
package com.sun.xml.stream.buffer.sax;
import com.sun.xml.stream.buffer.AbstractCreator;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import com.sun.xml.stream.buffer.MutableXMLStreamBuffer;
import java.io.IOException;
import java.io.InputStream;
import org.xml.sax.ContentHandler;
import org.xml.sax.DTDHandler;
import org.xml.sax.EntityResolver;
import org.xml.sax.ErrorHandler;
import org.xml.sax.InputSource;
import org.xml.sax.Locator;
import org.xml.sax.SAXParseException;
import org.xml.sax.XMLReader;
import org.xml.sax.ext.LexicalHandler;
/**
* Writes into {@link MutableXMLStreamBuffer} from SAX.
*
* TODO
* Implement the marking the stream on the element when an ID
* attribute on the element is defined
*/
public class SAXBufferCreator extends AbstractCreator
implements EntityResolver, DTDHandler, ContentHandler, ErrorHandler, LexicalHandler {
protected String[] _namespaceAttributes;
protected int _namespaceAttributesPtr;
private int depth = 0;
public SAXBufferCreator() {
_namespaceAttributes = new String[16 * 2];
}
public SAXBufferCreator(MutableXMLStreamBuffer buffer) {
this();
setBuffer(buffer);
}
public MutableXMLStreamBuffer create(XMLReader reader, InputStream in) throws IOException, SAXException {
return create(reader, in, null);
}
public MutableXMLStreamBuffer create(XMLReader reader, InputStream in, String systemId) throws IOException, SAXException {
if (_buffer == null) {
createBuffer();
}
_buffer.setSystemId(systemId);
reader.setContentHandler(this);
reader.setProperty(Properties.LEXICAL_HANDLER_PROPERTY, this);
try {
setHasInternedStrings(reader.getFeature(Features.STRING_INTERNING_FEATURE));
} catch (SAXException e) {
}
if (systemId != null) {
InputSource s = new InputSource(systemId);
s.setByteStream(in);
reader.parse(s);
} else {
reader.parse(new InputSource(in));
}
return getXMLStreamBuffer();
}
public void reset() {
_buffer = null;
_namespaceAttributesPtr = 0;
depth=0;
}
public void startDocument() throws SAXException {
storeStructure(T_DOCUMENT);
}
public void endDocument() throws SAXException {
storeStructure(T_END);
}
public void startPrefixMapping(String prefix, String uri) throws SAXException {
cacheNamespaceAttribute(prefix, uri);
}
public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException {
storeQualifiedName(T_ELEMENT_LN,
uri, localName, qName);
// Has namespaces attributes
if (_namespaceAttributesPtr > 0) {
storeNamespaceAttributes();
}
// Has attributes
if (attributes.getLength() > 0) {
storeAttributes(attributes);
}
depth++;
}
public void endElement(String uri, String localName, String qName) throws SAXException {
storeStructure(T_END);
if(--depth==0)
increaseTreeCount(); // one tree processed
}
public void characters(char ch[], int start, int length) throws SAXException {
storeContentCharacters(T_TEXT_AS_CHAR_ARRAY, ch, start, length);
}
public void ignorableWhitespace(char ch[], int start, int length) throws SAXException {
characters(ch, start, length);
}
public void processingInstruction(String target, String data) throws SAXException {
storeStructure(T_PROCESSING_INSTRUCTION);
storeStructureString(target);
storeStructureString(data);
}
public void comment(char[] ch, int start, int length) throws SAXException {
storeContentCharacters(T_COMMENT_AS_CHAR_ARRAY, ch, start, length);
}
//
private void cacheNamespaceAttribute(String prefix, String uri) {
_namespaceAttributes[_namespaceAttributesPtr++] = prefix;
_namespaceAttributes[_namespaceAttributesPtr++] = uri;
if (_namespaceAttributesPtr == _namespaceAttributes.length) {
final String[] namespaceAttributes = new String[_namespaceAttributesPtr * 2];
System.arraycopy(_namespaceAttributes, 0, namespaceAttributes, 0, _namespaceAttributesPtr);
_namespaceAttributes = namespaceAttributes;
}
}
private void storeNamespaceAttributes() {
for (int i = 0; i < _namespaceAttributesPtr; i += 2) {
int item = T_NAMESPACE_ATTRIBUTE;
if (_namespaceAttributes[i].length() > 0) {
item |= FLAG_PREFIX;
storeStructureString(_namespaceAttributes[i]);
}
if (_namespaceAttributes[i + 1].length() > 0) {
item |= FLAG_URI;
storeStructureString(_namespaceAttributes[i + 1]);
}
storeStructure(item);
}
_namespaceAttributesPtr = 0;
}
private void storeAttributes(Attributes attributes) {
for (int i = 0; i < attributes.getLength(); i++) {
// Skip NS attributes. Some versions of JDK seem to send wrong local name
// Also it is not stored correctly by the following.
if (attributes.getQName(i).startsWith("xmlns"))
continue;
storeQualifiedName(T_ATTRIBUTE_LN,
attributes.getURI(i),
attributes.getLocalName(i),
attributes.getQName(i));
storeStructureString(attributes.getType(i));
storeContentString(attributes.getValue(i));
}
}
private void storeQualifiedName(int item, String uri, String localName, String qName) {
if (uri.length() > 0) {
item |= FLAG_URI;
storeStructureString(uri);
}
storeStructureString(localName);
if (qName.indexOf(':') >= 0) {
item |= FLAG_QUALIFIED_NAME;
storeStructureString(qName);
}
storeStructure(item);
}
// Empty methods for SAX handlers
// Entity resolver handler
public InputSource resolveEntity (String publicId, String systemId)
throws IOException, SAXException
{
return null;
}
// DTD handler
public void notationDecl (String name, String publicId, String systemId)
throws SAXException
{ }
public void unparsedEntityDecl (String name, String publicId,
String systemId, String notationName)
throws SAXException
{ }
// Content handler
public void setDocumentLocator (Locator locator) { }
public void endPrefixMapping (String prefix) throws SAXException { }
public void skippedEntity (String name) throws SAXException { }
// Lexical handler
public void startDTD(String name, String publicId, String systemId) throws SAXException { }
public void endDTD() throws SAXException { }
public void startEntity(String name) throws SAXException { }
public void endEntity(String name) throws SAXException { }
public void startCDATA() throws SAXException { }
public void endCDATA() throws SAXException { }
// Error handler
public void warning(SAXParseException e) throws SAXException { }
public void error(SAXParseException e) throws SAXException { }
public void fatalError(SAXParseException e) throws SAXException
{
throw e;
}
}