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Create a new Superclass, POIDocument, which handles the property (hpsf) stuff which was previously done by HSLFSlideShow. Add tests for this, and convert HSLFSlideShow to using it

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git-svn-id: https://svn.apache.org/repos/asf/jakarta/poi/trunk@391363 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Nick Burch 2006-04-04 16:50:04 +00:00
parent 59121bead0
commit 7fa4feb4bb
3 changed files with 233 additions and 77 deletions
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128
src/scratchpad/src/org/apache/poi/POIDocument.java Normal file
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@ -0,0 +1,128 @@
/* ====================================================================
Copyright 2002-2004 Apache Software Foundation
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 org.apache.poi;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import org.apache.poi.hpsf.DocumentSummaryInformation;
import org.apache.poi.hpsf.MutablePropertySet;
import org.apache.poi.hpsf.PropertySet;
import org.apache.poi.hpsf.PropertySetFactory;
import org.apache.poi.hpsf.SummaryInformation;
import org.apache.poi.poifs.filesystem.DocumentInputStream;
import org.apache.poi.poifs.filesystem.POIFSFileSystem;
/**
* This holds the common functionality for all POI
* Document classes.
* Currently, this relates to Document Information Properties
*
* @author Nick Burch
*/
public abstract class POIDocument {
// Holds metadata on our document
protected SummaryInformation sInf;
protected DocumentSummaryInformation dsInf;
protected POIFSFileSystem filesystem;
/**
* Fetch the Document Summary Information of the document
*/
public DocumentSummaryInformation getDocumentSummaryInformation() { return dsInf; }
/**
* Fetch the Summary Information of the document
*/
public SummaryInformation getSummaryInformation() { return sInf; }
/**
* Find, and create objects for, the standard
* Documment Information Properties (hpsf)
*/
protected void readProperties() {
// DocumentSummaryInformation
dsInf = (DocumentSummaryInformation)getPropertySet("\005DocumentSummaryInformation");
// SummaryInformation
sInf = (SummaryInformation)getPropertySet("\005SummaryInformation");
}
/**
* For a given named property entry, either return it or null if
* if it wasn't found
*/
protected PropertySet getPropertySet(String setName) {
DocumentInputStream dis;
try {
// Find the entry, and get an input stream for it
dis = filesystem.createDocumentInputStream(setName);
} catch(IOException ie) {
// Oh well, doesn't exist
System.err.println("Error getting property set with name " + setName + "\n" + ie);
return null;
}
try {
// Create the Property Set
PropertySet set = PropertySetFactory.create(dis);
return set;
} catch(IOException ie) {
// Must be corrupt or something like that
System.err.println("Error creating property set with name " + setName + "\n" + ie);
} catch(org.apache.poi.hpsf.HPSFException he) {
// Oh well, doesn't exist
System.err.println("Error creating property set with name " + setName + "\n" + he);
}
return null;
}
/**
* Writes out the standard Documment Information Properties (hpsf)
* @param outFS the POIFSFileSystem to write the properties into
*/
protected void writeProperties(POIFSFileSystem outFS) throws IOException {
if(sInf != null) {
writePropertySet("\005SummaryInformation",sInf,outFS);
}
if(dsInf != null) {
writePropertySet("\005DocumentSummaryInformation",dsInf,outFS);
}
}
/**
* Writes out a given ProperySet
* @param name the (POIFS Level) name of the property to write
* @param set the PropertySet to write out
* @param outFS the POIFSFileSystem to write the property into
*/
protected void writePropertySet(String name, PropertySet set, POIFSFileSystem outFS) throws IOException {
try {
MutablePropertySet mSet = new MutablePropertySet(set);
ByteArrayOutputStream bOut = new ByteArrayOutputStream();
mSet.write(bOut);
byte[] data = bOut.toByteArray();
ByteArrayInputStream bIn = new ByteArrayInputStream(data);
outFS.createDocument(bIn,name);
System.out.println("Wrote property set " + name + " of size " + data.length);
} catch(org.apache.poi.hpsf.WritingNotSupportedException wnse) {
System.err.println("Couldn't write property set with name " + name + " as not supported by HPSF yet");
}
}
}

87
src/scratchpad/src/org/apache/poi/hslf/HSLFSlideShow.java
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@ -22,6 +22,7 @@ package org.apache.poi.hslf;
import java.util.*;
import java.io.*;
import org.apache.poi.POIDocument;
import org.apache.poi.poifs.filesystem.POIFSFileSystem;
import org.apache.poi.poifs.filesystem.DocumentEntry;
import org.apache.poi.poifs.filesystem.DocumentInputStream;
@ -42,14 +43,11 @@ import org.apache.poi.hslf.usermodel.PictureData;
* @author Nick Burch
*/
public class HSLFSlideShow
public class HSLFSlideShow extends POIDocument
{
private InputStream istream;
private POIFSFileSystem filesystem;
// Holds metadata on our document
private SummaryInformation sInf;
private DocumentSummaryInformation dsInf;
// Holds metadata on where things are in our document
private CurrentUserAtom currentUser;
// Low level contents of the file
@ -105,6 +103,9 @@ public class HSLFSlideShow
// Look for Property Streams:
readProperties();
// Look for other streams
readOtherStreams();
// Look for Picture Streams:
readPictures();
}
@ -186,15 +187,10 @@ public class HSLFSlideShow
/**
* Find the properties from the filesystem, and load them
* Find the other from the filesystem (currently just CurrentUserAtom),
* and load them
*/
public void readProperties() {
// DocumentSummaryInformation
dsInf = (DocumentSummaryInformation)getPropertySet("\005DocumentSummaryInformation");
// SummaryInformation
sInf = (SummaryInformation)getPropertySet("\005SummaryInformation");
public void readOtherStreams() {
// Current User
try {
currentUser = new CurrentUserAtom(filesystem);
@ -233,36 +229,6 @@ public class HSLFSlideShow
}
/**
* For a given named property entry, either return it or null if
* if it wasn't found
*/
public PropertySet getPropertySet(String setName) {
DocumentInputStream dis;
try {
// Find the entry, and get an input stream for it
dis = filesystem.createDocumentInputStream(setName);
} catch(IOException ie) {
// Oh well, doesn't exist
System.err.println("Error getting property set with name " + setName + "\n" + ie);
return null;
}
try {
// Create the Property Set
PropertySet set = PropertySetFactory.create(dis);
return set;
} catch(IOException ie) {
// Must be corrupt or something like that
System.err.println("Error creating property set with name " + setName + "\n" + ie);
} catch(org.apache.poi.hpsf.HPSFException he) {
// Oh well, doesn't exist
System.err.println("Error creating property set with name " + setName + "\n" + he);
}
return null;
}
/**
* Writes out the slideshow file the is represented by an instance of
* this class
@ -275,12 +241,7 @@ public class HSLFSlideShow
POIFSFileSystem outFS = new POIFSFileSystem();
// Write out the Property Streams
if(sInf != null) {
writePropertySet("\005SummaryInformation",sInf,outFS);
}
if(dsInf != null) {
writePropertySet("\005DocumentSummaryInformation",dsInf,outFS);
}
writeProperties(outFS);
// For position dependent records, hold where they were and now are
@ -342,24 +303,6 @@ public class HSLFSlideShow
}
/**
* Writes out a given ProperySet
*/
private void writePropertySet(String name, PropertySet set, POIFSFileSystem fs) throws IOException {
try {
MutablePropertySet mSet = new MutablePropertySet(set);
ByteArrayOutputStream bOut = new ByteArrayOutputStream();
mSet.write(bOut);
byte[] data = bOut.toByteArray();
ByteArrayInputStream bIn = new ByteArrayInputStream(data);
fs.createDocument(bIn,name);
System.out.println("Wrote property set " + name + " of size " + data.length);
} catch(org.apache.poi.hpsf.WritingNotSupportedException wnse) {
System.err.println("Couldn't write property set with name " + name + " as not supported by HPSF yet");
}
}
/* ******************* adding methods follow ********************* */
/**
@ -418,16 +361,6 @@ public class HSLFSlideShow
*/
public byte[] getUnderlyingBytes() { return _docstream; }
/**
* Fetch the Document Summary Information of the document
*/
public DocumentSummaryInformation getDocumentSummaryInformation() { return dsInf; }
/**
* Fetch the Summary Information of the document
*/
public SummaryInformation getSummaryInformation() { return sInf; }
/**
* Fetch the Current User Atom of the document
*/

95
src/scratchpad/testcases/org/apache/poi/TestPOIDocument.java Normal file
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@ -0,0 +1,95 @@
/* ====================================================================
Copyright 2002-2004 Apache Software Foundation
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 org.apache.poi;
import junit.framework.TestCase;
import java.io.*;
import org.apache.poi.hslf.HSLFSlideShow;
import org.apache.poi.poifs.filesystem.*;
/**
* Tests that POIDocument correctly loads and saves the common
* (hspf) Document Properties
*
* @author Nick Burch (nick at torchbox dot com)
*/
public class TestPOIDocument extends TestCase {
// The POI Document to work on
private POIDocument doc;
// POIFS primed on the test (powerpoint) data
private POIFSFileSystem pfs;
/**
* Set things up, using a PowerPoint document for our testing
*/
public void setUp() throws Exception {
String dirname = System.getProperty("HSLF.testdata.path");
String filename = dirname + "/basic_test_ppt_file.ppt";
FileInputStream fis = new FileInputStream(filename);
pfs = new POIFSFileSystem(fis);
doc = new HSLFSlideShow(pfs);
}
public void testReadProperties() throws Exception {
// We should have both sets
assertNotNull(doc.getDocumentSummaryInformation());
assertNotNull(doc.getSummaryInformation());
// Check they are as expected for the test doc
assertEquals("Hogwarts", doc.getSummaryInformation().getAuthor());
assertEquals(10598, doc.getDocumentSummaryInformation().getByteCount());
}
public void testWriteProperties() throws Exception {
// Just check we can write them back out into a filesystem
POIFSFileSystem outFS = new POIFSFileSystem();
doc.writeProperties(outFS);
// Should now hold them
assertNotNull(
outFS.createDocumentInputStream("\005SummaryInformation")
);
assertNotNull(
outFS.createDocumentInputStream("\005DocumentSummaryInformation")
);
}
public void testWriteReadProperties() throws Exception {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
// Write them out
POIFSFileSystem outFS = new POIFSFileSystem();
doc.writeProperties(outFS);
outFS.writeFilesystem(baos);
// Create a new version
ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
POIFSFileSystem inFS = new POIFSFileSystem(bais);
// Check they're still there
doc.filesystem = inFS;
doc.readProperties();
// Delegate test
testReadProperties();
}
}