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	/*
	* Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
	*/
	/*
	* 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 com.sun.org.apache.xml.internal.utils;

	import org.w3c.dom.Attr;
	import org.w3c.dom.NamedNodeMap;
	import org.w3c.dom.Node;

	import org.xml.sax.Attributes;

	/**
	* Wraps a DOM attribute list in a SAX Attributes.
	* @xsl.usage internal
	*/
	public class AttList implements Attributes
	{

	/** List of attribute nodes */
	NamedNodeMap m_attrs;

	/** Index of last attribute node */
	int m_lastIndex;

	// JAXP Uses Xerces without setting the namespace processing to ON!
	// DOM2Helper m_dh = new DOM2Helper();

	/**
	* Constructor AttList
	*
	* @param attrs List of attributes this will contain
	*/
	public AttList(NamedNodeMap attrs)
	{
	m_attrs = attrs;
	m_lastIndex = m_attrs.getLength() - 1;
	}

	/**
	* Get the number of attribute nodes in the list
	*
	*
	* @return number of attribute nodes
	*/
	public int getLength()
	{
	return m_attrs.getLength();
	}

	/**
	* Look up an attribute's Namespace URI by index.
	*
	* @param index The attribute index (zero-based).
	* @return The Namespace URI, or the empty string if none
	* is available, or null if the index is out of
	* range.
	*/
	public String getURI(int index)
	{
	String ns = DOM2Helper.getNamespaceOfNode(((Attr) m_attrs.item(index)));
	if(null == ns)
	ns = "";
	return ns;
	}

	/**
	* Look up an attribute's local name by index.
	*
	* @param index The attribute index (zero-based).
	* @return The local name, or the empty string if Namespace
	* processing is not being performed, or null
	* if the index is out of range.
	*/
	public String getLocalName(int index)
	{
	return DOM2Helper.getLocalNameOfNode(((Attr) m_attrs.item(index)));
	}

	/**
	* Look up an attribute's qualified name by index.
	*
	*
	* @param i The attribute index (zero-based).
	*
	* @return The attribute's qualified name
	*/
	public String getQName(int i)
	{
	return ((Attr) m_attrs.item(i)).getName();
	}

	/**
	* Get the attribute's node type by index
	*
	*
	* @param i The attribute index (zero-based)
	*
	* @return the attribute's node type
	*/
	public String getType(int i)
	{
	return "CDATA"; // for the moment
	}

	/**
	* Get the attribute's node value by index
	*
	*
	* @param i The attribute index (zero-based)
	*
	* @return the attribute's node value
	*/
	public String getValue(int i)
	{
	return ((Attr) m_attrs.item(i)).getValue();
	}

	/**
	* Get the attribute's node type by name
	*
	*
	* @param name Attribute name
	*
	* @return the attribute's node type
	*/
	public String getType(String name)
	{
	return "CDATA"; // for the moment
	}

	/**
	* Look up an attribute's type by Namespace name.
	*
	* @param uri The Namespace URI, or the empty String if the
	* name has no Namespace URI.
	* @param localName The local name of the attribute.
	* @return The attribute type as a string, or null if the
	* attribute is not in the list or if Namespace
	* processing is not being performed.
	*/
	public String getType(String uri, String localName)
	{
	return "CDATA"; // for the moment
	}

	/**
	* Look up an attribute's value by name.
	*
	*
	* @param name The attribute node's name
	*
	* @return The attribute node's value
	*/
	public String getValue(String name)
	{
	Attr attr = ((Attr) m_attrs.getNamedItem(name));
	return (null != attr)
	? attr.getValue() : null;
	}

	/**
	* Look up an attribute's value by Namespace name.
	*
	* @param uri The Namespace URI, or the empty String if the
	* name has no Namespace URI.
	* @param localName The local name of the attribute.
	* @return The attribute value as a string, or null if the
	* attribute is not in the list.
	*/
	public String getValue(String uri, String localName)
	{
	Node a=m_attrs.getNamedItemNS(uri,localName);
	return (a==null) ? null : a.getNodeValue();
	}

	/**
	* Look up the index of an attribute by Namespace name.
	*
	* @param uri The Namespace URI, or the empty string if
	* the name has no Namespace URI.
	* @param localPart The attribute's local name.
	* @return The index of the attribute, or -1 if it does not
	* appear in the list.
	*/
	public int getIndex(String uri, String localPart)
	{
	for(int i=m_attrs.getLength()-1;i>=0;--i)
	{
	Node a=m_attrs.item(i);
	String u=a.getNamespaceURI();
	if( (u==null ? uri==null : u.equals(uri))
	&&
	a.getLocalName().equals(localPart) )
	return i;
	}
	return -1;
	}

	/**
	* Look up the index of an attribute by raw XML 1.0 name.
	*
	* @param qName The qualified (prefixed) name.
	* @return The index of the attribute, or -1 if it does not
	* appear in the list.
	*/
	public int getIndex(String qName)
	{
	for(int i=m_attrs.getLength()-1;i>=0;--i)
	{
	Node a=m_attrs.item(i);
	if(a.getNodeName().equals(qName) )
	return i;
	}
	return -1;
	}
	}

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