/*
* Copyright 2001-2004 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.opti;
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.XMLAttributes;
import com.sun.org.apache.xerces.internal.xni.XMLString;
import com.sun.org.apache.xerces.internal.util.XMLSymbols;
import org.w3c.dom.Attr;
import org.w3c.dom.Element;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import java.util.Vector;
import java.util.Enumeration;
/**
* @xerces.internal
*
* @author Rahul Srivastava, Sun Microsystems Inc.
* @author Sandy Gao, IBM
*
* @version $Id: SchemaDOM.java,v 1.2.6.1 2005/09/08 10:33:57 sunithareddy Exp $
*/
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:
StringBuffer fAnnotationBuffer = null;
public SchemaDOM() {
reset();
}
public void 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;
}
public void emptyElement(QName element, XMLAttributes attributes,
int line, int column, int offset) {
ElementImpl node = new ElementImpl(line, column, offset);
processElement(element, attributes, node);
}
public void startElement(QName element, XMLAttributes attributes,
int line, int column) {
startElement(element, attributes, line, column, -1);
}
public void emptyElement(QName element, XMLAttributes attributes,
int line, int column) {
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<attributes.getLength(); i++) {
attrs[i] = new AttrImpl(null,
attributes.getPrefix(i),
attributes.getLocalName(i),
attributes.getQName(i),
attributes.getURI(i),
attributes.getValue(i));
}
node.attrs = attrs;
// check if array needs to be resized
if (nextFreeLoc == relations.length) {
resizeRelations();
}
// store the current parent
//if (relations[currLoc][0] == null || relations[currLoc][0] != parent) {
if (relations[currLoc][0] != parent) {
relations[nextFreeLoc][0] = parent;
currLoc = nextFreeLoc++;
}
// add the current node as child of parent
boolean foundPlace = false;
int i = 1;
for (i = 1; i<relations[currLoc].length; i++) {
if (relations[currLoc][i] == null) {
foundPlace = true;
break;
}
}
if (!foundPlace) {
resizeRelations(currLoc);
}
relations[currLoc][i] = node;
parent.parentRow = currLoc;
node.row = currLoc;
node.col = i;
}
public void endElement() {
// the parent of current parent node becomes the parent
// for the next node.
currLoc = parent.row;
parent = (ElementImpl)relations[currLoc][0];
}
// note that this will only be called within appinfo/documentation
void comment(XMLString text) {
fAnnotationBuffer.append("<!--").append(text.toString()).append("-->");
}
// note that this will only be called within appinfo/documentation
void processingInstruction(String target, String data) {
fAnnotationBuffer.append("<?").append(target).append(" ").append(data).append("?>");
}
// note that this will only be called within appinfo/documentation
void characters(XMLString text ) {
// escape characters if necessary
if (!inCDATA) {
for (int i = text.offset; i < text.offset+text.length; ++i ) {
char ch = text.ch[i];
if (ch == '&') {
fAnnotationBuffer.append("&");
}
else if (ch == '<') {
fAnnotationBuffer.append("<");
}
// character sequence "]]>" cannot appear in content,
// therefore we should escape '>'.
else if (ch == '>') {
fAnnotationBuffer.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') {
fAnnotationBuffer.append("
");
}
else {
fAnnotationBuffer.append(ch);
}
}
}
else {
fAnnotationBuffer.append(text.ch, text.offset, text.length);
}
}
void endAnnotationElement(QName elemName, boolean complete) {
if(complete) {
fAnnotationBuffer.append("\n</").append(elemName.rawname).append(">");
// note that this is always called after endElement on <annotation>'s
// child and before endElement on annotation.
// hence, we must make this the child of the current
// parent's only child.
ElementImpl child = (ElementImpl)relations[currLoc][1];
// check if array needs to be resized
if (nextFreeLoc == relations.length) {
resizeRelations();
}
int newRow = child.parentRow = nextFreeLoc++;
// now find the place to insert this node
boolean foundPlace = false;
int i = 1;
for (; i<relations[newRow].length; i++) {
if (relations[newRow][i] == null) {
foundPlace = true;
break;
}
}
if (!foundPlace) {
resizeRelations(newRow);
}
relations[newRow][i] = new TextImpl(fAnnotationBuffer, this, newRow, i);
// apparently, there is no sensible way of resetting
// these things
fAnnotationBuffer = null;
} else //capturing character calls
fAnnotationBuffer.append("</").append(elemName.rawname).append(">");
}
void endSyntheticAnnotationElement(QName elemName, boolean complete) {
if(complete) {
fAnnotationBuffer.append("\n</").append(elemName.rawname).append(">");
// note that this is always called after endElement on <annotation>'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("</").append(elemName.rawname).append(">");
}
void startAnnotationCDATA() {
inCDATA = true;
fAnnotationBuffer.append("<![CDATA[");
}
void endAnnotationCDATA() {
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<relations.length; i++)
for(int j=0; j<relations[i].length; j++)
relations[i][j] = null;
relations = new NodeImpl[relationsRowResizeFactor][];
parent = new ElementImpl(0, 0, 0);
parent.rawname = "DOCUMENT_NODE";
currLoc = 0;
nextFreeLoc = 1;
inCDATA = false;
for (int i=0; i<relationsRowResizeFactor; i++) {
relations[i] = new NodeImpl[relationsColResizeFactor];
}
relations[currLoc][0] = parent;
}
public void printDOM() {
/*
for (int i=0; i<relations.length; i++) {
if (relations[i][0] != null) {
for (int j=0; j<relations[i].length; j++) {
if (relations[i][j] != null) {
System.out.print(relations[i][j].nodeType+"-"+relations[i][j].parentRow+" ");
}
}
System.out.println("");
}
}
*/
//traverse(getDocumentElement(), 0);
}
// debug methods
public static void traverse(Node node, int depth) {
indent(depth);
System.out.print("<"+node.getNodeName());
if (node.hasAttributes()) {
NamedNodeMap attrs = node.getAttributes();
for (int i=0; i<attrs.getLength(); i++) {
System.out.print(" "+((Attr)attrs.item(i)).getName()+"=\""+((Attr)attrs.item(i)).getValue()+"\"");
}
}
if (node.hasChildNodes()) {
System.out.println(">");
depth+=4;
for (Node child = node.getFirstChild(); child != null; child = child.getNextSibling()) {
traverse(child, depth);
}
depth-=4;
indent(depth);
System.out.println("</"+node.getNodeName()+">");
}
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];
}
// commence the serialization of an annotation
void startAnnotation(QName elemName, XMLAttributes attributes,
NamespaceContext namespaceContext) {
if(fAnnotationBuffer == null) fAnnotationBuffer = new StringBuffer(256);
fAnnotationBuffer.append("<").append(elemName.rawname).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...
Vector namespaces = new Vector();
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.addElement(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) {
fAnnotationBuffer.append("<").append(elemName.rawname);
for(int i=0; i<attributes.getLength(); i++) {
String aValue = attributes.getValue(i);
fAnnotationBuffer.append(" ").append(attributes.getQName(i)).append("=\"").append(processAttValue(aValue)).append("\"");
}
fAnnotationBuffer.append(">");
}
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();
}
}
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