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/*
 * 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 org.apache.tika.parser.odf;

import org.apache.commons.io.input.CloseShieldInputStream;
import org.apache.tika.exception.TikaException;
import org.apache.tika.metadata.Metadata;
import org.apache.tika.mime.MediaType;
import org.apache.tika.parser.AbstractParser;
import org.apache.tika.parser.ParseContext;
import org.apache.tika.sax.ElementMappingContentHandler;
import org.apache.tika.sax.ElementMappingContentHandler.TargetElement;
import org.apache.tika.sax.OfflineContentHandler;
import org.apache.tika.sax.XHTMLContentHandler;
import org.apache.tika.utils.XMLReaderUtils;
import org.xml.sax.Attributes;
import org.xml.sax.ContentHandler;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.AttributesImpl;
import org.xml.sax.helpers.DefaultHandler;

import javax.xml.namespace.QName;
import java.io.IOException;
import java.io.InputStream;
import java.util.BitSet;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
import java.util.Stack;

import static org.apache.tika.sax.XHTMLContentHandler.XHTML;

/**
 * Parser for ODF content.xml files.
 */
public class OpenDocumentContentParser extends AbstractParser {

    public Set getSupportedTypes(ParseContext context) {
        return Collections.emptySet(); // not a top-level parser
    }

    public void parse(
            InputStream stream, ContentHandler handler,
            Metadata metadata, ParseContext context)
            throws IOException, SAXException, TikaException {
        parseInternal(stream,
                new XHTMLContentHandler(handler, metadata),
                metadata, context);
    }

    void parseInternal(
            InputStream stream, final ContentHandler handler,
            Metadata metadata, ParseContext context)
            throws IOException, SAXException, TikaException {

        DefaultHandler dh = new OpenDocumentBodyHandler(handler, context);


        XMLReaderUtils.parseSAX(
                new CloseShieldInputStream(stream),
                new OfflineContentHandler(
                        new NSNormalizerContentHandler(dh)),
                context);
    }

}