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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
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package org.apache.poi.hslf;
import junit.framework.TestCase;
import org.apache.poi.hslf.usermodel.SlideShow;
import org.apache.poi.poifs.filesystem.*;
import org.apache.poi.POIDataSamples;
import java.io.ByteArrayOutputStream;
import java.io.ByteArrayInputStream;
import java.io.FileNotFoundException;
/**
* Tests that HSLFSlideShow writes the powerpoint bit of data back out
* correctly. Currently, that means being the same as what it read in
*
* @author Nick Burch (nick at torchbox dot com)
*/
public final class TestReWrite extends TestCase {
// HSLFSlideShow primed on the test data
private HSLFSlideShow hssA;
private HSLFSlideShow hssB;
private HSLFSlideShow hssC;
// POIFS primed on the test data
private POIFSFileSystem pfsA;
private POIFSFileSystem pfsB;
private POIFSFileSystem pfsC;
public void setUp() throws Exception {
POIDataSamples slTests = POIDataSamples.getSlideShowInstance();
pfsA = new POIFSFileSystem(slTests.openResourceAsStream("basic_test_ppt_file.ppt"));
hssA = new HSLFSlideShow(pfsA);
pfsB = new POIFSFileSystem(slTests.openResourceAsStream("ParagraphStylesShorterThanCharStyles.ppt"));
hssB = new HSLFSlideShow(pfsB);
pfsC = new POIFSFileSystem(slTests.openResourceAsStream("WithMacros.ppt"));
hssC = new HSLFSlideShow(pfsC);
}
public void testWritesOutTheSame() throws Exception {
assertWritesOutTheSame(hssA, pfsA);
assertWritesOutTheSame(hssB, pfsB);
}
public void assertWritesOutTheSame(HSLFSlideShow hss, POIFSFileSystem pfs) throws Exception {
// Write out to a byte array
ByteArrayOutputStream baos = new ByteArrayOutputStream();
hss.write(baos);
// Build an input stream of it
ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
// Use POIFS to query that lot
POIFSFileSystem npfs = new POIFSFileSystem(bais);
// Check that the "PowerPoint Document" sections have the same size
DocumentEntry oProps = (DocumentEntry)pfs.getRoot().getEntry("PowerPoint Document");
DocumentEntry nProps = (DocumentEntry)npfs.getRoot().getEntry("PowerPoint Document");
assertEquals(oProps.getSize(),nProps.getSize());
// Check that they contain the same data
byte[] _oData = new byte[oProps.getSize()];
byte[] _nData = new byte[nProps.getSize()];
pfs.createDocumentInputStream("PowerPoint Document").read(_oData);
npfs.createDocumentInputStream("PowerPoint Document").read(_nData);
for(int i=0; i<_oData.length; i++) {
//System.out.println(i + "\t" + Integer.toHexString(i));
assertEquals(_oData[i], _nData[i]);
}
}
public void testWithMacroStreams() throws Exception {
// Check that they're apparently the same
assertSlideShowWritesOutTheSame(hssC, pfsC);
// Currently has a Macros stream
assertNotNull( pfsC.getRoot().getEntry("Macros") );
// Write out normally, will loose the macro stream
ByteArrayOutputStream baos = new ByteArrayOutputStream();
hssC.write(baos);
POIFSFileSystem pfsNew = new POIFSFileSystem(
new ByteArrayInputStream(baos.toByteArray()) );
try {
pfsNew.getRoot().getEntry("Macros");
fail();
} catch(FileNotFoundException e) {
// Good, as expected
}
// But if we write out with nodes preserved, will be there
baos = new ByteArrayOutputStream();
hssC.write(baos, true);
pfsNew = new POIFSFileSystem(
new ByteArrayInputStream(baos.toByteArray()) );
assertNotNull( pfsNew.getRoot().getEntry("Macros") );
}
/**
* Ensure that simply opening a slideshow (usermodel) view of it
* doesn't change things
*/
public void testSlideShowWritesOutTheSame() throws Exception {
assertSlideShowWritesOutTheSame(hssA, pfsA);
// Some bug in StyleTextPropAtom rewriting means this will fail
// We need to identify and fix that first
//assertSlideShowWritesOutTheSame(hssB, pfsB);
}
public void assertSlideShowWritesOutTheSame(HSLFSlideShow hss, POIFSFileSystem pfs) throws Exception {
// Create a slideshow covering it
SlideShow ss = new SlideShow(hss);
ss.getSlides();
ss.getNotes();
// Now write out to a byte array
ByteArrayOutputStream baos = new ByteArrayOutputStream();
hss.write(baos);
// Build an input stream of it
ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
// Use POIFS to query that lot
POIFSFileSystem npfs = new POIFSFileSystem(bais);
// Check that the "PowerPoint Document" sections have the same size
DocumentEntry oProps = (DocumentEntry)pfs.getRoot().getEntry("PowerPoint Document");
DocumentEntry nProps = (DocumentEntry)npfs.getRoot().getEntry("PowerPoint Document");
assertEquals(oProps.getSize(),nProps.getSize());
// Check that they contain the same data
byte[] _oData = new byte[oProps.getSize()];
byte[] _nData = new byte[nProps.getSize()];
pfs.createDocumentInputStream("PowerPoint Document").read(_oData);
npfs.createDocumentInputStream("PowerPoint Document").read(_nData);
for(int i=0; i<_oData.length; i++) {
if(_oData[i] != _nData[i])
System.out.println(i + "\t" + Integer.toHexString(i));
assertEquals(_oData[i], _nData[i]);
}
}
}