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 */
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 * Licensed to the Apache Software Foundation (ASF) under one or more
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 * 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
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 *      http://www.apache.org/licenses/LICENSE-2.0
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package com.sun.org.apache.xerces.internal.util;


import com.sun.org.apache.xerces.internal.xni.NamespaceContext;
import java.util.Collections;
import java.util.Enumeration;
import java.util.List;
import java.util.TreeSet;
import java.util.Vector;
import javax.xml.XMLConstants;

A read-only XNI wrapper around a JAXP NamespaceContext.

Author:Michael Glavassevich, IBM
@LastModified: Oct 2017
/** * <p>A read-only XNI wrapper around a JAXP NamespaceContext.</p> * * @author Michael Glavassevich, IBM * * @LastModified: Oct 2017 */
public final class JAXPNamespaceContextWrapper implements NamespaceContext { private javax.xml.namespace.NamespaceContext fNamespaceContext; private SymbolTable fSymbolTable; private List<String> fPrefixes; private final Vector<String> fAllPrefixes = new Vector<>(); private int[] fContext = new int[8]; private int fCurrentContext; public JAXPNamespaceContextWrapper(SymbolTable symbolTable) { setSymbolTable(symbolTable); } public void setNamespaceContext(javax.xml.namespace.NamespaceContext context) { fNamespaceContext = context; } public javax.xml.namespace.NamespaceContext getNamespaceContext() { return fNamespaceContext; } public void setSymbolTable(SymbolTable symbolTable) { fSymbolTable = symbolTable; } public SymbolTable getSymbolTable() { return fSymbolTable; } public void setDeclaredPrefixes(List<String> prefixes) { fPrefixes = prefixes; } public List<String> getDeclaredPrefixes() { return fPrefixes; } /* * NamespaceContext methods */ public String getURI(String prefix) { if (fNamespaceContext != null) { String uri = fNamespaceContext.getNamespaceURI(prefix); if (uri != null && !XMLConstants.NULL_NS_URI.equals(uri)) { return (fSymbolTable != null) ? fSymbolTable.addSymbol(uri) : uri.intern(); } } return null; } public String getPrefix(String uri) { if (fNamespaceContext != null) { if (uri == null) { uri = XMLConstants.NULL_NS_URI; } String prefix = fNamespaceContext.getPrefix(uri); if (prefix == null) { prefix = XMLConstants.DEFAULT_NS_PREFIX; } return (fSymbolTable != null) ? fSymbolTable.addSymbol(prefix) : prefix.intern(); } return null; } public Enumeration<String> getAllPrefixes() { // There may be duplicate prefixes in the list so we // first transfer them to a set to ensure uniqueness. return Collections.enumeration(new TreeSet<String>(fAllPrefixes)); } public void pushContext() { // extend the array, if necessary if (fCurrentContext + 1 == fContext.length) { int[] contextarray = new int[fContext.length * 2]; System.arraycopy(fContext, 0, contextarray, 0, fContext.length); fContext = contextarray; } // push context fContext[++fCurrentContext] = fAllPrefixes.size(); if (fPrefixes != null) { fAllPrefixes.addAll(fPrefixes); } } public void popContext() { fAllPrefixes.setSize(fContext[fCurrentContext--]); } public boolean declarePrefix(String prefix, String uri) { return true; } public int getDeclaredPrefixCount() { return (fPrefixes != null) ? fPrefixes.size() : 0; } public String getDeclaredPrefixAt(int index) { return fPrefixes.get(index); } public void reset() { fCurrentContext = 0; fContext[fCurrentContext] = 0; fAllPrefixes.clear(); } } // JAXPNamespaceContextWrapper