org.apache.tika.parser.isatab.ISATabStudyParser.java Source code

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Here is the source code for org.apache.tika.parser.isatab.ISATabStudyParser.java

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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.isatab;

import java.io.IOException;
import java.io.InputStream;
import java.nio.charset.Charset;
import java.util.Collections;
import java.util.List;
import java.util.Set;

import org.apache.commons.csv.CSVFormat;
import org.apache.commons.csv.CSVParser;
import org.apache.commons.csv.CSVRecord;
import org.apache.tika.config.ServiceLoader;
import org.apache.tika.detect.AutoDetectReader;
import org.apache.tika.exception.TikaException;
import org.apache.tika.io.CloseShieldInputStream;
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.XHTMLContentHandler;
import org.xml.sax.ContentHandler;
import org.xml.sax.SAXException;

public class ISATabStudyParser extends AbstractParser {

    /**
     * Serial version UID
     */
    private static final long serialVersionUID = -8050020285778309011L;

    private static final ServiceLoader LOADER = new ServiceLoader(ISATabInvestigationParser.class.getClassLoader());

    private final Set<MediaType> SUPPORTED_TYPES = Collections.singleton(MediaType.application("x-isatab-study"));

    @Override
    public Set<MediaType> getSupportedTypes(ParseContext context) {
        return SUPPORTED_TYPES;
    }

    @Override
    public void parse(InputStream stream, ContentHandler handler, Metadata metadata, ParseContext context)
            throws IOException, SAXException, TikaException {

        // Automatically detect the character encoding
        AutoDetectReader reader = new AutoDetectReader(new CloseShieldInputStream(stream), metadata,
                context.get(ServiceLoader.class, LOADER));
        CSVParser csvParser = null;

        try {
            Charset charset = reader.getCharset();
            MediaType type = new MediaType(MediaType.application("x-isatab-study"), charset);
            metadata.set(Metadata.CONTENT_TYPE, type.toString());
            metadata.set(Metadata.CONTENT_ENCODING, charset.name());

            XHTMLContentHandler xhtml = new XHTMLContentHandler(handler, metadata);
            xhtml.newline();

            csvParser = new CSVParser(reader, CSVFormat.TDF);

            xhtml.startDocument();
            xhtml.newline();

            xhtml.startElement("table");
            xhtml.newline();

            List<CSVRecord> records = csvParser.getRecords();

            for (int i = 0; i < records.get(0).size(); i++) {
                xhtml.startElement("th");
                xhtml.characters(records.get(0).get(i));
                xhtml.endElement("th");
                xhtml.newline();
            }

            for (int i = 1; i < records.get(0).size(); i++) {
                xhtml.startElement("tr");
                xhtml.newline();

                for (int j = 0; j < records.get(i).size(); j++) {
                    xhtml.startElement("td");
                    xhtml.characters(records.get(i).get(j));
                    xhtml.endElement("td");
                    xhtml.newline();
                }

                xhtml.endElement("tr");
                xhtml.newline();
            }

            xhtml.endElement("table");
            xhtml.newline();

            xhtml.endDocument();

        } finally {
            reader.close();
            csvParser.close();
        }
    }
}