/*
* #!
* Ontopia Classify
* #-
* Copyright (C) 2001 - 2013 The Ontopia Project
* #-
* Licensed 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 net.ontopia.topicmaps.classify;
import java.io.ByteArrayInputStream;
import net.ontopia.utils.OntopiaRuntimeException;
import org.apache.poi.xslf.extractor.XSLFPowerPointExtractor;
import org.apache.poi.openxml4j.opc.OPCPackage;
/**
* INTERNAL: A format module for the OOXML PresentationML format.
*/
public class OOXMLPowerpointFormatModule implements FormatModuleIF {
protected String[] extensions = new String[] {".pptx"};
// these are really magic bytes for all zip files...
protected byte[] magicBytes = new byte[] {
(byte) 0x50, (byte) 0x4B, (byte) 0x03, (byte) 0x04 };
public boolean matchesContent(ClassifiableContentIF cc) {
return false;
}
public boolean matchesIdentifier(ClassifiableContentIF cc) {
boolean matches = FormatModule.matchesExtension(cc.getIdentifier(), extensions);
if (!matches) return false;
// name matches, then check office magic bytes
return FormatModule.startsWith(cc.getContent(), magicBytes);
}
public void readContent(ClassifiableContentIF cc, TextHandlerIF handler) {
try {
OPCPackage opc = OPCPackage.open(new ByteArrayInputStream(cc.getContent()));
XSLFPowerPointExtractor extractor = new XSLFPowerPointExtractor(opc);
String s = extractor.getText();
char[] c = s.toCharArray();
handler.startRegion("document");
handler.text(c, 0, c.length);
handler.endRegion();
} catch (Exception e) {
throw new OntopiaRuntimeException(e);
}
}
}