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A processor for parsing, validating, serializing and manipulating XML, written in Java
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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 org.apache.xerces.impl.xs.opti;
import java.util.ArrayList;
import java.util.Enumeration;
import org.apache.xerces.util.XMLSymbols;
import org.apache.xerces.xni.NamespaceContext;
import org.apache.xerces.xni.QName;
import org.apache.xerces.xni.XMLAttributes;
import org.apache.xerces.xni.XMLString;
import org.w3c.dom.Attr;
import org.w3c.dom.DOMImplementation;
import org.w3c.dom.Element;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
/**
* @xerces.internal
*
* @author Rahul Srivastava, Sun Microsystems Inc.
* @author Sandy Gao, IBM
*
* @version $Id$
*/
public class SchemaDOM extends DefaultDocument {
static final int relationsRowResizeFactor = 15;
static final int relationsColResizeFactor = 10;
NodeImpl[][] relations;
// parent must be an element in this scheme
ElementImpl parent;
int currLoc;
int nextFreeLoc;
boolean hidden;
boolean inCDATA;
// for annotation support:
private StringBuffer fAnnotationBuffer = null;
public SchemaDOM() {
reset();
}
public ElementImpl startElement(QName element, XMLAttributes attributes,
int line, int column, int offset) {
ElementImpl node = new ElementImpl(line, column, offset);
processElement(element, attributes, node);
// now the current node added, becomes the parent
parent = node;
return node;
}
public ElementImpl emptyElement(QName element, XMLAttributes attributes,
int line, int column, int offset) {
ElementImpl node = new ElementImpl(line, column, offset);
processElement(element, attributes, node);
return node;
}
public ElementImpl startElement(QName element, XMLAttributes attributes,
int line, int column) {
return startElement(element, attributes, line, column, -1);
}
public ElementImpl emptyElement(QName element, XMLAttributes attributes,
int line, int column) {
return emptyElement(element, attributes, line, column, -1);
}
private void processElement(QName element, XMLAttributes attributes, ElementImpl node) {
// populate node
node.prefix = element.prefix;
node.localpart = element.localpart;
node.rawname = element.rawname;
node.uri = element.uri;
node.schemaDOM = this;
// set the attributes
Attr[] attrs = new Attr[attributes.getLength()];
for (int i=0; i 0) {
fAnnotationBuffer.append(text.ch, text.offset, text.length);
}
fAnnotationBuffer.append("-->");
}
// note that this will only be called within appinfo/documentation
void processingInstruction(String target, XMLString data) {
fAnnotationBuffer.append(" 0) {
fAnnotationBuffer.append(' ').append(data.ch, data.offset, data.length);
}
fAnnotationBuffer.append("?>");
}
// note that this will only be called within appinfo/documentation
void characters(XMLString text) {
// escape characters if necessary
if (!inCDATA) {
final StringBuffer annotationBuffer = fAnnotationBuffer;
for (int i = text.offset; i < text.offset+text.length; ++i) {
char ch = text.ch[i];
if (ch == '&') {
annotationBuffer.append("&");
}
else if (ch == '<') {
annotationBuffer.append("<");
}
// character sequence "]]>" cannot appear in content,
// therefore we should escape '>'.
else if (ch == '>') {
annotationBuffer.append(">");
}
// If CR is part of the document's content, it
// must not be printed as a literal otherwise
// it would be normalized to LF when the document
// is reparsed.
else if (ch == '\r') {
annotationBuffer.append("
");
}
else {
annotationBuffer.append(ch);
}
}
}
else {
fAnnotationBuffer.append(text.ch, text.offset, text.length);
}
}
// note that this will only be called within appinfo/documentation
void charactersRaw(String text) {
fAnnotationBuffer.append(text);
}
void endAnnotation(QName elemName, ElementImpl annotation) {
fAnnotationBuffer.append("\n");
annotation.fAnnotation = fAnnotationBuffer.toString();
// apparently, there is no sensible way of resetting these things
fAnnotationBuffer = null;
}
void endAnnotationElement(QName elemName) {
endAnnotationElement(elemName.rawname);
}
void endAnnotationElement(String elemRawName) {
fAnnotationBuffer.append("");
}
void endSyntheticAnnotationElement(QName elemName, boolean complete) {
endSyntheticAnnotationElement(elemName.rawname, complete);
}
void endSyntheticAnnotationElement(String elemRawName, boolean complete) {
if(complete) {
fAnnotationBuffer.append("\n");
// note that this is always called after endElement on 's
// child and before endElement on annotation.
// hence, we must make this the child of the current
// parent's only child.
parent.fSyntheticAnnotation = fAnnotationBuffer.toString();
// apparently, there is no sensible way of resetting
// these things
fAnnotationBuffer = null;
} else //capturing character calls
fAnnotationBuffer.append("");
}
void startAnnotationCDATA() {
inCDATA = true;
fAnnotationBuffer.append("");
inCDATA = false;
}
private void resizeRelations() {
NodeImpl[][] temp = new NodeImpl[relations.length+relationsRowResizeFactor][];
System.arraycopy(relations, 0, temp, 0, relations.length);
for (int i = relations.length ; i < temp.length ; i++) {
temp[i] = new NodeImpl[relationsColResizeFactor];
}
relations = temp;
}
private void resizeRelations(int i) {
NodeImpl[] temp = new NodeImpl[relations[i].length+relationsColResizeFactor];
System.arraycopy(relations[i], 0, temp, 0, relations[i].length);
relations[i] = temp;
}
public void reset() {
// help out the garbage collector
if(relations != null)
for(int i=0; i");
depth+=4;
for (Node child = node.getFirstChild(); child != null; child = child.getNextSibling()) {
traverse(child, depth);
}
depth-=4;
indent(depth);
System.out.println("");
}
else {
System.out.println("/>");
}
}
public static void indent(int amount) {
for (int i = 0; i < amount; i++) {
System.out.print(' ');
}
}
// org.w3c.dom methods
public Element getDocumentElement() {
// this returns a parent node, known to be an ElementImpl
return (ElementImpl)relations[0][1];
}
public DOMImplementation getImplementation() {
return SchemaDOMImplementation.getDOMImplementation();
}
// commence the serialization of an annotation
void startAnnotation(QName elemName, XMLAttributes attributes,
NamespaceContext namespaceContext) {
startAnnotation(elemName.rawname, attributes, namespaceContext);
}
void startAnnotation(String elemRawName, XMLAttributes attributes,
NamespaceContext namespaceContext) {
if(fAnnotationBuffer == null) fAnnotationBuffer = new StringBuffer(256);
fAnnotationBuffer.append("<").append(elemRawName).append(" ");
// attributes are a bit of a pain. To get this right, we have to keep track
// of the namespaces we've seen declared, then examine the namespace context
// for other namespaces so that we can also include them.
// optimized for simplicity and the case that not many
// namespaces are declared on this annotation...
ArrayList namespaces = new ArrayList();
for (int i = 0; i < attributes.getLength(); ++i) {
String aValue = attributes.getValue(i);
String aPrefix = attributes.getPrefix(i);
String aQName = attributes.getQName(i);
// if it's xmlns:* or xmlns, must be a namespace decl
if (aPrefix == XMLSymbols.PREFIX_XMLNS || aQName == XMLSymbols.PREFIX_XMLNS) {
namespaces.add(aPrefix == XMLSymbols.PREFIX_XMLNS ?
attributes.getLocalName(i) : XMLSymbols.EMPTY_STRING);
}
fAnnotationBuffer.append(aQName).append("=\"").append(processAttValue(aValue)).append("\" ");
}
// now we have to look through currently in-scope namespaces to see what
// wasn't declared here
Enumeration currPrefixes = namespaceContext.getAllPrefixes();
while(currPrefixes.hasMoreElements()) {
String prefix = (String)currPrefixes.nextElement();
String uri = namespaceContext.getURI(prefix);
if (uri == null) {
uri = XMLSymbols.EMPTY_STRING;
}
if (!namespaces.contains(prefix)) {
// have to declare this one
if(prefix == XMLSymbols.EMPTY_STRING) {
fAnnotationBuffer.append("xmlns").append("=\"").append(processAttValue(uri)).append("\" ");
}
else {
fAnnotationBuffer.append("xmlns:").append(prefix).append("=\"").append(processAttValue(uri)).append("\" ");
}
}
}
fAnnotationBuffer.append(">\n");
}
void startAnnotationElement(QName elemName, XMLAttributes attributes) {
startAnnotationElement(elemName.rawname, attributes);
}
void startAnnotationElement(String elemRawName, XMLAttributes attributes) {
fAnnotationBuffer.append("<").append(elemRawName);
for(int i=0; i");
}
private static String processAttValue(String original) {
final int length = original.length();
// normally, nothing will happen
for (int i = 0; i < length; ++i) {
char currChar = original.charAt(i);
if (currChar == '"' || currChar == '<' || currChar == '&' ||
currChar == 0x09 || currChar == 0x0A || currChar == 0x0D) {
return escapeAttValue(original, i);
}
}
return original;
}
private static String escapeAttValue(String original, int from) {
int i;
final int length = original.length();
StringBuffer newVal = new StringBuffer(length);
newVal.append(original.substring(0, from));
for (i = from; i < length; ++i) {
char currChar = original.charAt(i);
if (currChar == '"') {
newVal.append(""");
}
else if (currChar == '<') {
newVal.append("<");
}
else if (currChar == '&') {
newVal.append("&");
}
// Must escape 0x09, 0x0A and 0x0D if they appear in attribute
// value so that they may be round-tripped. They would otherwise
// be transformed to a 0x20 during attribute value normalization.
else if (currChar == 0x09) {
newVal.append(" ");
}
else if (currChar == 0x0A) {
newVal.append("
");
}
else if (currChar == 0x0D) {
newVal.append("
");
}
else {
newVal.append(currChar);
}
}
return newVal.toString();
}
}