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of the major CPU users during snippet verification. The class was not efficient for two reasons: - it used a too complex input stream; generated from sources and UTF8 byte-conversions. The BufferedReader applied a strong overhead. - to feed data into the SentenceReader, multiple toString/getBytes had been applied until a buffered Reader from an input stream was possible. These superfluous conversions had been removed. - the best source for the Sentence Reader is a String. Therefore the production of Strings had been forced inside the Document class.
117 lines
4.5 KiB
Java
117 lines
4.5 KiB
Java
//pptParser.java
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//------------------------
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//part of YaCy
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//(C) by Michael Peter Christen; mc@yacy.net
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//first published on http://www.anomic.de
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//Frankfurt, Germany, 2005
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//
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//this file is contributed by Tim Riemann
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//
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// $LastChangedDate$
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// $LastChangedRevision$
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// $LastChangedBy$
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//
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//This program is free software; you can redistribute it and/or modify
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//it under the terms of the GNU General Public License as published by
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//the Free Software Foundation; either version 2 of the License, or
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//(at your option) any later version.
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//
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//This program is distributed in the hope that it will be useful,
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//but WITHOUT ANY WARRANTY; without even the implied warranty of
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//MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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//GNU General Public License for more details.
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//
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//You should have received a copy of the GNU General Public License
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//along with this program; if not, write to the Free Software
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//Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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package net.yacy.document.parser;
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import java.io.BufferedInputStream;
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import java.io.InputStream;
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import net.yacy.document.AbstractParser;
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import net.yacy.document.Document;
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import net.yacy.document.Parser;
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import net.yacy.kelondro.data.meta.DigestURI;
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import net.yacy.kelondro.logging.Log;
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import org.apache.poi.hslf.extractor.PowerPointExtractor;
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public class pptParser extends AbstractParser implements Parser {
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public pptParser(){
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super("Microsoft Powerpoint Parser");
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this.SUPPORTED_EXTENSIONS.add("ppt");
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this.SUPPORTED_EXTENSIONS.add("pps");
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this.SUPPORTED_MIME_TYPES.add("application/mspowerpoint");
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this.SUPPORTED_MIME_TYPES.add("application/powerpoint");
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this.SUPPORTED_MIME_TYPES.add("application/vnd.ms-powerpoint");
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this.SUPPORTED_MIME_TYPES.add("application/ms-powerpoint");
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this.SUPPORTED_MIME_TYPES.add("application/mspowerpnt");
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this.SUPPORTED_MIME_TYPES.add("application/vnd-mspowerpoint");
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this.SUPPORTED_MIME_TYPES.add("application/x-powerpoint");
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this.SUPPORTED_MIME_TYPES.add("application/x-m");
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}
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/*
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* parses the source documents and returns a plasmaParserDocument containing
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* all extracted information about the parsed document
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*/
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public Document[] parse(final DigestURI location, final String mimeType,
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final String charset, final InputStream source) throws Parser.Failure,
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InterruptedException {
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try {
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/*
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* create new PowerPointExtractor and extract text and notes
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* of the document
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*/
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final PowerPointExtractor pptExtractor = new PowerPointExtractor(new BufferedInputStream(source));
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final String contents = pptExtractor.getText(true, true).trim();
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String title = contents.replaceAll("\r"," ").replaceAll("\n"," ").replaceAll("\t"," ").trim();
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if (title.length() > 80) title = title.substring(0, 80);
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int l = title.length();
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while (true) {
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title = title.replaceAll(" ", " ");
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if (title.length() == l) break;
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l = title.length();
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}
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/*
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* create the plasmaParserDocument for the database
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* and set shortText and bodyText properly
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*/
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final Document[] docs = new Document[]{new Document(
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location,
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mimeType,
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"UTF-8",
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this,
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null,
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null,
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title,
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"", // TODO: AUTHOR
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pptExtractor.getDocSummaryInformation().getCompany(),
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null,
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null,
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0.0f, 0.0f,
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contents,
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null,
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null,
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null,
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false)};
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return docs;
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} catch (final Exception e) {
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if (e instanceof InterruptedException) throw (InterruptedException) e;
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/*
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* an unexpected error occurred, log it and throw a Parser.Failure
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*/
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Log.logException(e);
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final String errorMsg = "Unable to parse the ppt document '" + location + "':" + e.getMessage();
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this.log.logSevere(errorMsg);
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throw new Parser.Failure(errorMsg, location);
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}
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}
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}
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