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contributor license agreements. See the NOTICE file distributed with
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
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.
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package org.apache.poi.hdgf.streams;
import java.io.FileInputStream;
import org.apache.poi.hdgf.chunks.Chunk;
import org.apache.poi.hdgf.chunks.ChunkFactory;
import org.apache.poi.hdgf.pointers.Pointer;
import org.apache.poi.hdgf.pointers.PointerFactory;
import org.apache.poi.poifs.filesystem.DocumentEntry;
import org.apache.poi.poifs.filesystem.POIFSFileSystem;
public final class TestStreamComplex extends StreamTest {
private byte[] contents;
private int trailerPointerAt = 0x24;
private int trailerDataAt = 0x8a94;
private ChunkFactory chunkFactory;
private PointerFactory ptrFactory;
protected void setUp() throws Exception {
String dirname = System.getProperty("HDGF.testdata.path");
String filename = dirname + "/Test_Visio-Some_Random_Text.vsd";
ptrFactory = new PointerFactory(11);
chunkFactory = new ChunkFactory(11);
FileInputStream fin = new FileInputStream(filename);
POIFSFileSystem filesystem = new POIFSFileSystem(fin);
DocumentEntry docProps =
(DocumentEntry)filesystem.getRoot().getEntry("VisioDocument");
// Grab the document stream
contents = new byte[docProps.getSize()];
filesystem.createDocumentInputStream("VisioDocument").read(contents);
}
/**
* Test creating the trailer, but not looking for children
*/
public void testTrailer() {
// Find the trailer
Pointer trailerPtr = ptrFactory.createPointer(contents, trailerPointerAt);
assertEquals(20, trailerPtr.getType());
assertEquals(trailerDataAt, trailerPtr.getOffset());
Stream stream = Stream.createStream(trailerPtr, contents, chunkFactory, ptrFactory);
assertTrue(stream instanceof TrailerStream);
TrailerStream ts = (TrailerStream)stream;
assertNotNull(ts.getChildPointers());
assertNull(ts.getPointedToStreams());
assertEquals(20, ts.getChildPointers().length);
assertEquals(0x16, ts.getChildPointers()[0].getType());
assertEquals(0x17, ts.getChildPointers()[1].getType());
assertEquals(0x17, ts.getChildPointers()[2].getType());
assertEquals(0xff, ts.getChildPointers()[3].getType());
}
public void testChunks() {
Pointer trailerPtr = ptrFactory.createPointer(contents, trailerPointerAt);
TrailerStream ts = (TrailerStream)
Stream.createStream(trailerPtr, contents, chunkFactory, ptrFactory);
// Should be 7th one
Pointer chunkPtr = ts.getChildPointers()[5];
assertFalse(chunkPtr.destinationHasStrings());
assertTrue(chunkPtr.destinationHasChunks());
assertFalse(chunkPtr.destinationHasPointers());
Stream stream = Stream.createStream(chunkPtr, contents, chunkFactory, ptrFactory);
assertNotNull(stream);
assertTrue(stream instanceof ChunkStream);
// Now find the chunks within it
ChunkStream cs = (ChunkStream)stream;
cs.findChunks();
}
public void testStrings() {
Pointer trailerPtr = ptrFactory.createPointer(contents, trailerPointerAt);
TrailerStream ts = (TrailerStream)
Stream.createStream(trailerPtr, contents, chunkFactory, ptrFactory);
// Should be the 1st one
Pointer stringPtr = ts.getChildPointers()[0];
assertTrue(stringPtr.destinationHasStrings());
assertFalse(stringPtr.destinationHasChunks());
assertFalse(stringPtr.destinationHasPointers());
Stream stream = Stream.createStream(stringPtr, contents, chunkFactory, ptrFactory);
assertNotNull(stream);
assertTrue(stream instanceof StringsStream);
}
public void testPointerToStrings() {
// The stream at 0x347f has strings
// The stream at 0x4312 has a pointer to 0x347f
// The stream at 0x44d3 has a pointer to 0x4312
// (it's the 2nd one of 3, and the block is compressed)
TestPointer ptr44d3 = new TestPointer(true, 0x44d3, 0x51, 0x4e, (short)0x56);
ptr44d3.hasPointers = true;
PointerContainingStream s44d3 = (PointerContainingStream)
Stream.createStream(ptr44d3, contents, chunkFactory, ptrFactory);
// Type: 0d Addr: 014ff644 Offset: 4312 Len: 48 Format: 54 From: 44d3
Pointer ptr4312 = s44d3.getChildPointers()[1];
assertEquals(0x0d, ptr4312.getType());
assertEquals(0x4312, ptr4312.getOffset());
assertEquals(0x48, ptr4312.getLength());
assertEquals(0x54, ptr4312.getFormat());
assertTrue(ptr4312.destinationHasPointers());
assertFalse(ptr4312.destinationHasStrings());
PointerContainingStream s4312 = (PointerContainingStream)
Stream.createStream(ptr4312, contents, chunkFactory, ptrFactory);
// Check it has 0x347f
// Type: 1f Addr: 01540004 Offset: 347f Len: 8e8 Format: 46 From: 4312
assertEquals(2, s4312.getChildPointers().length);
Pointer ptr347f = s4312.getChildPointers()[0];
assertEquals(0x1f, ptr347f.getType());
assertEquals(0x347f, ptr347f.getOffset());
assertEquals(0x8e8, ptr347f.getLength());
assertEquals(0x46, ptr347f.getFormat());
assertFalse(ptr347f.destinationHasPointers());
assertTrue(ptr347f.destinationHasStrings());
// Find the children of 0x4312
assertNull(s4312.getPointedToStreams());
s4312.findChildren(contents);
// Should have two, both strings
assertNotNull(s4312.getPointedToStreams());
assertEquals(2, s4312.getPointedToStreams().length);
assertTrue(s4312.getPointedToStreams()[0] instanceof StringsStream);
assertTrue(s4312.getPointedToStreams()[1] instanceof StringsStream);
}
public void testTrailerContents() {
Pointer trailerPtr = ptrFactory.createPointer(contents, trailerPointerAt);
TrailerStream ts = (TrailerStream)
Stream.createStream(trailerPtr, contents, chunkFactory, ptrFactory);
assertNotNull(ts.getChildPointers());
assertNull(ts.getPointedToStreams());
assertEquals(20, ts.getChildPointers().length);
ts.findChildren(contents);
assertNotNull(ts.getChildPointers());
assertNotNull(ts.getPointedToStreams());
assertEquals(20, ts.getChildPointers().length);
assertEquals(20, ts.getPointedToStreams().length);
// Step down:
// 8 -> 4 -> 5 -> 1 -> 0 == String
assertNotNull(ts.getPointedToStreams()[8]);
assertTrue(ts.getPointedToStreams()[8] instanceof PointerContainingStream);
PointerContainingStream s8 =
(PointerContainingStream)ts.getPointedToStreams()[8];
assertNotNull(s8.getPointedToStreams());
assertNotNull(s8.getPointedToStreams()[4]);
assertTrue(s8.getPointedToStreams()[4] instanceof PointerContainingStream);
PointerContainingStream s84 =
(PointerContainingStream)s8.getPointedToStreams()[4];
assertNotNull(s84.getPointedToStreams());
assertNotNull(s84.getPointedToStreams()[5]);
assertTrue(s84.getPointedToStreams()[5] instanceof PointerContainingStream);
PointerContainingStream s845 =
(PointerContainingStream)s84.getPointedToStreams()[5];
assertNotNull(s845.getPointedToStreams());
assertNotNull(s845.getPointedToStreams()[1]);
assertTrue(s845.getPointedToStreams()[1] instanceof PointerContainingStream);
PointerContainingStream s8451 =
(PointerContainingStream)s845.getPointedToStreams()[1];
assertNotNull(s8451.getPointedToStreams());
assertNotNull(s8451.getPointedToStreams()[0]);
assertTrue(s8451.getPointedToStreams()[0] instanceof StringsStream);
assertTrue(s8451.getPointedToStreams()[1] instanceof StringsStream);
}
public void testChunkWithText() throws Exception {
// Parent ChunkStream is at 0x7194
// This is one of the last children of the trailer
Pointer trailerPtr = ptrFactory.createPointer(contents, trailerPointerAt);
TrailerStream ts = (TrailerStream)
Stream.createStream(trailerPtr, contents, chunkFactory, ptrFactory);
ts.findChildren(contents);
assertNotNull(ts.getChildPointers());
assertNotNull(ts.getPointedToStreams());
assertEquals(20, ts.getChildPointers().length);
assertEquals(20, ts.getPointedToStreams().length);
assertEquals(0x7194, ts.getChildPointers()[13].getOffset());
assertEquals(0x7194, ts.getPointedToStreams()[13].getPointer().getOffset());
PointerContainingStream ps7194 = (PointerContainingStream)
ts.getPointedToStreams()[13];
// First child is at 0x64b3
assertEquals(0x64b3, ps7194.getChildPointers()[0].getOffset());
assertEquals(0x64b3, ps7194.getPointedToStreams()[0].getPointer().getOffset());
ChunkStream cs = (ChunkStream)ps7194.getPointedToStreams()[0];
// Should be 26bc bytes un-compressed
assertEquals(0x26bc, cs.getStore().getContents().length);
// And should have lots of children
assertEquals(131, cs.getChunks().length);
// One of which is Text
boolean hasText = false;
for(int i=0; i<cs.getChunks().length; i++) {
if(cs.getChunks()[i].getName().equals("Text")) {
hasText = true;
}
}
assertTrue(hasText);
// Which is the 72nd command
assertEquals("Text", cs.getChunks()[72].getName());
Chunk text = cs.getChunks()[72];
assertEquals("Text", text.getName());
// Which contains our text
assertEquals(1, text.getCommands().length);
assertEquals("Test View\n", text.getCommands()[0].getValue());
// Almost at the end is some more text
assertEquals("Text", cs.getChunks()[128].getName());
text = cs.getChunks()[128];
assertEquals("Text", text.getName());
assertEquals(1, text.getCommands().length);
assertEquals("Some random text, on a page\n", text.getCommands()[0].getValue());
}
}