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//xlsParser.java
//------------------------
//part of YaCy
//(C) by Michael Peter Christen; mc@yacy.net
//first published on http://www.anomic.de
//Frankfurt, Germany, 2005
//
//this file is contributed by Tim Riemann
//
// $LastChangedDate$
// $LastChangedRevision$
// $LastChangedBy$
//
//This program is free software; you can redistribute it and/or modify
//it under the terms of the GNU General Public License as published by
//the Free Software Foundation; either version 2 of the License, or
//(at your option) any later version.
//
//This program 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 for more details.
//
//You should have received a copy of the GNU General Public License
//along with this program; if not, write to the Free Software
//Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
package net.yacy.document.parser;
import java.io.IOException;
import java.io.InputStream;
import java.nio.charset.StandardCharsets;
import java.util.ArrayList;
import java.util.List;
import net.yacy.cora.document.id.DigestURL;
import net.yacy.cora.document.id.MultiProtocolURL;
import net.yacy.cora.util.CommonPattern;
import net.yacy.document.AbstractParser;
import net.yacy.document.Document;
import net.yacy.document.Parser;
import net.yacy.document.VocabularyScraper;
import org.apache.poi.hpsf.SummaryInformation;
import org.apache.poi.hssf.extractor.ExcelExtractor;
import org.apache.poi.poifs.filesystem.POIFSFileSystem;
public class xlsParser extends AbstractParser implements Parser {
public xlsParser(){
super("Microsoft Excel Parser");
this.SUPPORTED_EXTENSIONS.add("xls");
this.SUPPORTED_EXTENSIONS.add("xla");
this.SUPPORTED_MIME_TYPES.add("application/msexcel");
this.SUPPORTED_MIME_TYPES.add("application/excel");
this.SUPPORTED_MIME_TYPES.add("application/vnd.ms-excel");
this.SUPPORTED_MIME_TYPES.add("application/x-excel");
this.SUPPORTED_MIME_TYPES.add("application/x-msexcel");
this.SUPPORTED_MIME_TYPES.add("application/x-ms-excel");
this.SUPPORTED_MIME_TYPES.add("application/x-dos_ms_excel");
this.SUPPORTED_MIME_TYPES.add("application/xls");
}
/*
* parses the source documents and returns a plasmaParserDocument containing
* all extracted information about the parsed document
*/
@Override
public Document[] parse(
final DigestURL location,
final String mimeType,
final String charset,
final VocabularyScraper scraper,
final int timezoneOffset,
final InputStream source) throws Parser.Failure,
InterruptedException {
try {
//create a new org.apache.poi.poifs.filesystem.Filesystem
final POIFSFileSystem poifs = new POIFSFileSystem(source);
ExcelExtractor exceldoc = new ExcelExtractor(poifs);
exceldoc.setIncludeSheetNames(false); // exclude sheet names from getText() as also empty sheet names are returned
SummaryInformation sumInfo = exceldoc.getSummaryInformation();
String title = sumInfo.getTitle();
if (title == null || title.isEmpty()) title = MultiProtocolURL.unescape(location.getFileName());
final String subject = sumInfo.getSubject();
List<String> descriptions = new ArrayList<String>();
if (subject != null && !subject.isEmpty()) descriptions.add(subject);
// get keywords (for yacy as array)
final String keywords = sumInfo.getKeywords();
final String[] keywlist;
if (keywords != null && !keywords.isEmpty()) {
keywlist = CommonPattern.COMMA.split(keywords);
} else keywlist = null;
Document[] retdocs = new Document[]{new Document(
location,
mimeType,
StandardCharsets.UTF_8.name(),
this,
null,
keywlist,
singleList(title),
sumInfo.getAuthor(),
exceldoc.getDocSummaryInformation().getCompany(),
null,
descriptions,
0.0d, 0.0d,
exceldoc.getText(),
null,
null,
null,
false,
sumInfo.getLastSaveDateTime())};
return retdocs;
} catch (IOException ex1) {
throw new Parser.Failure(ex1.getMessage(), location);
}
}
}
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