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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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http://www.apache.org/licenses/LICENSE-2.0
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package org.apache.poi.hslf;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;
import org.apache.poi.POIDataSamples;
import org.apache.poi.hslf.usermodel.HSLFSlideShow;
import org.apache.poi.hslf.usermodel.HSLFSlideShowImpl;
import org.apache.poi.poifs.filesystem.DocumentEntry;
import org.apache.poi.poifs.filesystem.POIFSFileSystem;
import org.apache.poi.util.TempFile;
import org.junit.Before;
import org.junit.Test;
/**
* 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 {
// HSLFSlideShow primed on the test data
private HSLFSlideShowImpl hssA;
private HSLFSlideShowImpl hssB;
private HSLFSlideShowImpl hssC;
// POIFS primed on the test data
private POIFSFileSystem pfsA;
private POIFSFileSystem pfsB;
private POIFSFileSystem pfsC;
@Before
public void setUp() throws Exception {
POIDataSamples slTests = POIDataSamples.getSlideShowInstance();
pfsA = new POIFSFileSystem(slTests.openResourceAsStream("basic_test_ppt_file.ppt"));
hssA = new HSLFSlideShowImpl(pfsA);
pfsB = new POIFSFileSystem(slTests.openResourceAsStream("ParagraphStylesShorterThanCharStyles.ppt"));
hssB = new HSLFSlideShowImpl(pfsB);
pfsC = new POIFSFileSystem(slTests.openResourceAsStream("WithMacros.ppt"));
hssC = new HSLFSlideShowImpl(pfsC);
}
@Test
public void testWritesOutTheSame() throws Exception {
assertWritesOutTheSame(hssA, pfsA);
assertWritesOutTheSame(hssB, pfsB);
}
public void assertWritesOutTheSame(HSLFSlideShowImpl hss, POIFSFileSystem pfs) throws Exception {
// Write out to a byte array, and to a temp file
ByteArrayOutputStream baos = new ByteArrayOutputStream();
hss.write(baos);
final File file = TempFile.createTempFile("TestHSLF", ".ppt");
final File file2 = TempFile.createTempFile("TestHSLF", ".ppt");
hss.write(file);
hss.write(file2);
// Build an input stream of it, and read back as a POIFS from the stream
ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
POIFSFileSystem npfS = new POIFSFileSystem(bais);
// And the same on the temp file
POIFSFileSystem npfF = new POIFSFileSystem(file);
// And another where we do an in-place write
POIFSFileSystem npfRF = new POIFSFileSystem(file2, false);
HSLFSlideShowImpl hssRF = new HSLFSlideShowImpl(npfRF);
hssRF.write();
hssRF.close();
npfRF = new POIFSFileSystem(file2);
// Check all of them in turn
for (POIFSFileSystem npf : new POIFSFileSystem[] { npfS, npfF, npfRF }) {
// Check that the "PowerPoint Document" sections have the same size
DocumentEntry oProps = (DocumentEntry)pfs.getRoot().getEntry("PowerPoint Document");
DocumentEntry nProps = (DocumentEntry)npf.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);
npf.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]);
}
npf.close();
}
}
@Test
public void testWithMacroStreams() throws IOException {
// 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);
ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
POIFSFileSystem pfsNew = new POIFSFileSystem(bais);
assertFalse(pfsNew.getRoot().hasEntry("Macros"));
pfsNew.close();
// But if we write out with nodes preserved, will be there
baos.reset();
hssC.write(baos, true);
bais = new ByteArrayInputStream(baos.toByteArray());
pfsNew = new POIFSFileSystem(bais);
assertTrue( pfsNew.getRoot().hasEntry("Macros") );
pfsNew.close();
}
/**
* Ensure that simply opening a slideshow (usermodel) view of it
* doesn't change things
*/
@Test
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(HSLFSlideShowImpl hss, POIFSFileSystem pfs) throws IOException {
// Create a slideshow covering it
@SuppressWarnings("resource")
HSLFSlideShow ss = new HSLFSlideShow(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]);
}
npfs.close();
}
@Test
public void test48593() throws IOException {
HSLFSlideShow ppt1 = new HSLFSlideShow();
ppt1.createSlide();
HSLFSlideShow ppt2 = HSLFTestDataSamples.writeOutAndReadBack(ppt1);
ppt2.createSlide();
HSLFSlideShow ppt3 = HSLFTestDataSamples.writeOutAndReadBack(ppt2);
ppt3.createSlide();
HSLFSlideShow ppt4 = HSLFTestDataSamples.writeOutAndReadBack(ppt3);
ppt4.createSlide();
HSLFTestDataSamples.writeOutAndReadBack(ppt4).close();
ppt4.close();
ppt3.close();
ppt2.close();
ppt1.close();
}
}