/*

 * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

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 */

package com.sun.xml.internal.org.jvnet.staxex.util;

import java.util.Iterator;

import javax.xml.soap.SOAPElement;

import javax.xml.soap.SOAPException;

import javax.xml.stream.XMLStreamException;

import com.sun.xml.internal.org.jvnet.staxex.Base64Data;

import com.sun.xml.internal.org.jvnet.staxex.XMLStreamReaderEx;

import com.sun.xml.internal.org.jvnet.staxex.BinaryText;

import org.w3c.dom.Node;

import org.w3c.dom.Text;

/**

 * SaajStaxReaderEx

 *

 * @author shih-chang.chen@oracle.com

 */

public class SaajStaxReaderEx extends DOMStreamReader implements XMLStreamReaderEx {

    //TODO extends com.sun.xml.internal.ws.streaming.DOMStreamReader

    private BinaryText binaryText = null;

    private Base64Data base64AttData = null;

    public SaajStaxReaderEx(SOAPElement se) {

        super(se);

    }

    @Override

    public int next() throws XMLStreamException {

        binaryText = null;

        base64AttData = null;

        while(true) {

            int r = _next();

            switch (r) {

            case CHARACTERS:

                if (_current instanceof BinaryText) {

                    binaryText = (BinaryText) _current;

                    base64AttData = new Base64Data();

                    try {

                        base64AttData.set(binaryText.getDataHandler());

//System.out.println("--------------- debug SaajStaxReaderEx binaryText " + binaryText);

                    } catch (SOAPException e) {

                        throw new XMLStreamException(e);

                    }

                } else {

                    // if we are currently at text node, make sure that this is a meaningful text node.

                    Node prev = _current.getPreviousSibling();

                    if(prev!=null && prev.getNodeType()==Node.TEXT_NODE)

                        continue;   // nope. this is just a continuation of previous text that should be invisible

                    Text t = (Text)_current;

                    wholeText = t.getWholeText();

                    if(wholeText.length()==0)

                        continue;   // nope. this is empty text.

                }

                return CHARACTERS;

            case START_ELEMENT:

                splitAttributes();

                return START_ELEMENT;

            default:

                return r;

            }

        }

    }

    @Override

    public String getElementTextTrim() throws XMLStreamException {

        // TODO Auto-generated method stub

        return null;

    }

    @Override

    public CharSequence getPCDATA() throws XMLStreamException {

        return (binaryText != null) ? base64AttData : getText();

    }

    @Override

    public com.sun.xml.internal.org.jvnet.staxex.NamespaceContextEx getNamespaceContext() {

        return new com.sun.xml.internal.org.jvnet.staxex.NamespaceContextEx() {

            @Override

            public String getNamespaceURI(String prefix) {

                return _current.lookupNamespaceURI(prefix);

            }

            @Override

            public String getPrefix(String uri) {

                return _current.lookupPrefix(uri);

            }

            @Override

            public Iterator getPrefixes(String arg0) {

                // TODO Auto-generated method stub

                return null;

            }

            @Override

            public Iterator<Binding> iterator() {

                // TODO Auto-generated method stub

                return null;

            }

        };

    }

    @Override

    public int getTextLength() {

        return (binaryText != null) ? base64AttData.length() : super.getTextLength();

    }

    @Override

    public int getTextStart() {

        return (binaryText != null) ? 0: super.getTextStart();

    }

    @Override

    public char[] getTextCharacters() {

        if (binaryText != null) {

            char[] chars = new char[base64AttData.length()];

            base64AttData.writeTo(chars, 0);

            return chars;

        }

        return super.getTextCharacters();

    }

}