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This module contains the Metro runtime code.
/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 2004-2011 Oracle and/or its affiliates. All rights reserved.
*
* Oracle 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 com.sun.xml.fastinfoset.util;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import javax.xml.namespace.NamespaceContext;
/**
*
* @author [email protected]
*/
final public class NamespaceContextImplementation implements NamespaceContext {
private static int DEFAULT_SIZE = 8;
private String[] prefixes = new String[DEFAULT_SIZE];
private String[] namespaceURIs = new String[DEFAULT_SIZE];
private int namespacePosition;
private int[] contexts = new int[DEFAULT_SIZE];
private int contextPosition;
private int currentContext;
public NamespaceContextImplementation() {
prefixes[0] = "xml";
namespaceURIs[0] = "http://www.w3.org/XML/1998/namespace";
prefixes[1] = "xmlns";
namespaceURIs[1] = "http://www.w3.org/2000/xmlns/";
currentContext = namespacePosition = 2;
}
public String getNamespaceURI(String prefix) {
if (prefix == null) throw new IllegalArgumentException();
// prefix = prefix.intern();
for (int i = namespacePosition - 1; i >= 0; i--) {
final String declaredPrefix = prefixes[i];
if (declaredPrefix.equals(prefix)) {
return namespaceURIs[i];
}
}
return "";
}
public String getPrefix(String namespaceURI) {
if (namespaceURI == null) throw new IllegalArgumentException();
// namespaceURI = namespaceURI.intern();
for (int i = namespacePosition - 1; i >= 0; i--) {
final String declaredNamespaceURI = namespaceURIs[i];
if (declaredNamespaceURI.equals(namespaceURI)) {
final String declaredPrefix = prefixes[i];
// Check if prefix is out of scope
boolean isOutOfScope = false;
for (int j = i + 1; j < namespacePosition; j++)
if (declaredPrefix.equals(prefixes[j])) {
isOutOfScope = true;
break;
}
if (!isOutOfScope) {
return declaredPrefix;
}
}
}
return null;
}
public String getNonDefaultPrefix(String namespaceURI) {
if (namespaceURI == null) throw new IllegalArgumentException();
// namespaceURI = namespaceURI.intern();
for (int i = namespacePosition - 1; i >= 0; i--) {
final String declaredNamespaceURI = namespaceURIs[i];
if (declaredNamespaceURI.equals(namespaceURI) &&
prefixes[i].length() > 0){
final String declaredPrefix = prefixes[i];
// Check if prefix is out of scope
for (++i; i < namespacePosition; i++)
if (declaredPrefix.equals(prefixes[i]))
return null;
return declaredPrefix;
}
}
return null;
}
public Iterator getPrefixes(String namespaceURI) {
if (namespaceURI == null) throw new IllegalArgumentException();
// namespaceURI = namespaceURI.intern();
List l = new ArrayList();
NAMESPACE_LOOP: for (int i = namespacePosition - 1; i >= 0; i--) {
final String declaredNamespaceURI = namespaceURIs[i];
if (declaredNamespaceURI.equals(namespaceURI)) {
final String declaredPrefix = prefixes[i];
// Check if prefix is out of scope
for (int j = i + 1; j < namespacePosition; j++)
if (declaredPrefix.equals(prefixes[j]))
continue NAMESPACE_LOOP;
l.add(declaredPrefix);
}
}
return l.iterator();
}
public String getPrefix(int index) {
return prefixes[index];
}
public String getNamespaceURI(int index) {
return namespaceURIs[index];
}
public int getCurrentContextStartIndex() {
return currentContext;
}
public int getCurrentContextEndIndex() {
return namespacePosition;
}
public boolean isCurrentContextEmpty() {
return currentContext == namespacePosition;
}
public void declarePrefix(String prefix, String namespaceURI) {
prefix = prefix.intern();
namespaceURI = namespaceURI.intern();
// Ignore the "xml" or "xmlns" declarations
if (prefix == "xml" || prefix == "xmlns")
return;
// Replace any previous declaration
for (int i = currentContext; i < namespacePosition; i++) {
final String declaredPrefix = prefixes[i];
if (declaredPrefix == prefix) {
prefixes[i] = prefix;
namespaceURIs[i] = namespaceURI;
return;
}
}
if (namespacePosition == namespaceURIs.length)
resizeNamespaces();
// Add new declaration
prefixes[namespacePosition] = prefix;
namespaceURIs[namespacePosition++] = namespaceURI;
}
private void resizeNamespaces() {
final int newLength = namespaceURIs.length * 3 / 2 + 1;
String[] newPrefixes = new String[newLength];
System.arraycopy(prefixes, 0, newPrefixes, 0, prefixes.length);
prefixes = newPrefixes;
String[] newNamespaceURIs = new String[newLength];
System.arraycopy(namespaceURIs, 0, newNamespaceURIs, 0, namespaceURIs.length);
namespaceURIs = newNamespaceURIs;
}
public void pushContext() {
if (contextPosition == contexts.length)
resizeContexts();
contexts[contextPosition++] = currentContext = namespacePosition;
}
private void resizeContexts() {
int[] newContexts = new int[contexts.length * 3 / 2 + 1];
System.arraycopy(contexts, 0, newContexts, 0, contexts.length);
contexts = newContexts;
}
public void popContext() {
if (contextPosition > 0) {
namespacePosition = currentContext = contexts[--contextPosition];
}
}
public void reset() {
currentContext = namespacePosition = 2;
}
}