Initial support for HDGF pointers, along with tests
git-svn-id: https://svn.apache.org/repos/asf/jakarta/poi/trunk@548461 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Nick Burch
parent
2d22286924
commit
407d10ffd1
51
src/scratchpad/src/org/apache/poi/hdgf/pointers/Pointer.java
Normal file
51
src/scratchpad/src/org/apache/poi/hdgf/pointers/Pointer.java
Normal file
@ -0,0 +1,51 @@
|
||||
/* ====================================================================
|
||||
Licensed to the Apache Software Foundation (ASF) under one or more
|
||||
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.
|
||||
==================================================================== */
|
||||
package org.apache.poi.hdgf.pointers;
|
||||
|
||||
/**
|
||||
* Base class of pointers, which hold metadata and offsets about
|
||||
* blocks elsewhere in the file
|
||||
*/
|
||||
public abstract class Pointer {
|
||||
protected int type;
|
||||
protected int address;
|
||||
protected int offset;
|
||||
protected int length;
|
||||
protected short format;
|
||||
|
||||
public int getAddress() {
|
||||
return address;
|
||||
}
|
||||
public short getFormat() {
|
||||
return format;
|
||||
}
|
||||
public int getLength() {
|
||||
return length;
|
||||
}
|
||||
public int getOffset() {
|
||||
return offset;
|
||||
}
|
||||
public int getType() {
|
||||
return type;
|
||||
}
|
||||
|
||||
public abstract int getSizeInBytes();
|
||||
public abstract boolean destinationHasStrings();
|
||||
public abstract boolean destinationHasPointers();
|
||||
public abstract boolean destinationHasChunks();
|
||||
public abstract boolean destinationCompressed();
|
||||
}
|
||||
@ -0,0 +1,48 @@
|
||||
/* ====================================================================
|
||||
Licensed to the Apache Software Foundation (ASF) under one or more
|
||||
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.
|
||||
==================================================================== */
|
||||
package org.apache.poi.hdgf.pointers;
|
||||
|
||||
import org.apache.poi.util.LittleEndian;
|
||||
|
||||
/**
|
||||
* Factor class to create the appropriate pointers, based on the version
|
||||
* of the file
|
||||
*/
|
||||
public class PointerFactory {
|
||||
private int version;
|
||||
public PointerFactory(int version) {
|
||||
this.version = version;
|
||||
}
|
||||
|
||||
public Pointer createPointer(byte[] data, int offset) {
|
||||
Pointer p;
|
||||
if(version >= 6) {
|
||||
p = new PointerV6();
|
||||
p.type = LittleEndian.getInt(data, offset+0);
|
||||
p.address = (int)LittleEndian.getUInt(data, offset+4);
|
||||
p.offset = (int)LittleEndian.getUInt(data, offset+8);
|
||||
p.length = (int)LittleEndian.getUInt(data, offset+12);
|
||||
p.format = LittleEndian.getShort(data, offset+16);
|
||||
|
||||
return p;
|
||||
} else if(version == 5) {
|
||||
throw new RuntimeException("TODO");
|
||||
} else {
|
||||
throw new IllegalArgumentException("Visio files with versions below 5 are not supported, yours was " + version);
|
||||
}
|
||||
}
|
||||
}
|
||||
@ -0,0 +1,44 @@
|
||||
/* ====================================================================
|
||||
Licensed to the Apache Software Foundation (ASF) under one or more
|
||||
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.
|
||||
==================================================================== */
|
||||
package org.apache.poi.hdgf.pointers;
|
||||
|
||||
/**
|
||||
* A Pointer from v6+
|
||||
*/
|
||||
public class PointerV6 extends Pointer {
|
||||
public boolean destinationHasStrings() {
|
||||
return (0x40 <= format && format < 0x50);
|
||||
}
|
||||
public boolean destinationHasPointers() {
|
||||
if(type == 20) return true;
|
||||
if(format == 0x1d || format == 0x1e) return true;
|
||||
return (0x50 <= format && format < 0x60);
|
||||
}
|
||||
public boolean destinationHasChunks() {
|
||||
return (0xd0 <= format && format < 0xd0);
|
||||
}
|
||||
|
||||
public boolean destinationCompressed() {
|
||||
// Apparently, it's the second least significant bit
|
||||
return (format & 2) > 0;
|
||||
}
|
||||
|
||||
/**
|
||||
* With v6 pointers, the on-disk size is 18 bytes
|
||||
*/
|
||||
public int getSizeInBytes() { return 18; }
|
||||
}
|
||||
@ -0,0 +1,139 @@
|
||||
/* ====================================================================
|
||||
Licensed to the Apache Software Foundation (ASF) under one or more
|
||||
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.
|
||||
==================================================================== */
|
||||
package org.apache.poi.hdgf.pointers;
|
||||
|
||||
import junit.framework.TestCase;
|
||||
|
||||
/**
|
||||
* Tests for the pointer factory, and the pointers themselves
|
||||
*/
|
||||
public class TestPointerFactory extends TestCase {
|
||||
// Type: 16 Addr: 0143aff4 Offset: 80 Len: 54 Format: 46 From: 8a94
|
||||
private static byte[] vp6_a = new byte[] {
|
||||
22, 0, 0, 0, -12, -81, 67, 1, -128, 0, 0, 0, 84, 0, 0, 0, 70, 0
|
||||
};
|
||||
// Type: 17 Addr: 014fd84c Offset: d4 Len: 20 Format: 54 From: 8a94
|
||||
private static byte[] vp6_b = new byte[] {
|
||||
23, 0, 0, 0, 76, -40, 79, 1, -44, 0, 0, 0, 32, 0, 0, 0, 84, 0
|
||||
};
|
||||
// Type: 17 Addr: 014fd8bc Offset: f8 Len: 20 Format: 54 From: 8a94
|
||||
private static byte[] vp6_c = new byte[] {
|
||||
23, 0, 0, 0, -68, -40, 79, 1, -8, 0, 0, 0, 32, 0, 0, 0, 84, 0
|
||||
};
|
||||
// Type: ff Addr: 014fffac Offset: 0 Len: 0 Format: 60 From: 8a94
|
||||
private static byte[] vp6_d = new byte[] {
|
||||
-1, 0, 0, 0, -84, -1, 79, 1, 0, 0, 0, 0, 0, 0, 0, 0, 96, 0
|
||||
};
|
||||
|
||||
public void testCreateV4() throws Exception {
|
||||
PointerFactory pf = new PointerFactory(4);
|
||||
try {
|
||||
pf.createPointer(new byte[]{}, 0);
|
||||
fail();
|
||||
} catch(IllegalArgumentException e) {
|
||||
// As expected
|
||||
}
|
||||
}
|
||||
|
||||
public void testCreateV5() throws Exception {
|
||||
PointerFactory pf = new PointerFactory(5);
|
||||
try {
|
||||
pf.createPointer(new byte[]{}, 0);
|
||||
fail();
|
||||
} catch(RuntimeException e) {
|
||||
// Still to do
|
||||
assertEquals("TODO", e.getMessage());
|
||||
}
|
||||
}
|
||||
|
||||
public void testCreateV6() throws Exception {
|
||||
PointerFactory pf = new PointerFactory(6);
|
||||
|
||||
Pointer a = pf.createPointer(vp6_a, 0);
|
||||
assertEquals(0x16, a.getType());
|
||||
assertEquals(0x0143aff4, a.getAddress());
|
||||
assertEquals(0x80, a.getOffset());
|
||||
assertEquals(0x54, a.getLength());
|
||||
assertEquals(0x46, a.getFormat());
|
||||
|
||||
assertTrue(a.destinationCompressed());
|
||||
assertTrue(a.destinationHasStrings());
|
||||
assertFalse(a.destinationHasChunks());
|
||||
assertFalse(a.destinationHasPointers());
|
||||
|
||||
assertEquals(18, a.getSizeInBytes());
|
||||
|
||||
|
||||
Pointer b = pf.createPointer(vp6_b, 0);
|
||||
assertEquals(0x17, b.getType());
|
||||
assertEquals(0x014fd84c, b.getAddress());
|
||||
assertEquals(0xd4, b.getOffset());
|
||||
assertEquals(0x20, b.getLength());
|
||||
assertEquals(0x54, b.getFormat());
|
||||
|
||||
assertFalse(b.destinationCompressed());
|
||||
assertFalse(b.destinationHasStrings());
|
||||
assertFalse(b.destinationHasChunks());
|
||||
assertTrue(b.destinationHasPointers());
|
||||
|
||||
Pointer c = pf.createPointer(vp6_c, 0);
|
||||
assertEquals(0x17, c.getType());
|
||||
assertEquals(0x014fd8bc, c.getAddress());
|
||||
assertEquals(0xf8, c.getOffset());
|
||||
assertEquals(0x20, c.getLength());
|
||||
assertEquals(0x54, c.getFormat());
|
||||
|
||||
assertFalse(c.destinationCompressed());
|
||||
assertFalse(c.destinationHasStrings());
|
||||
assertFalse(c.destinationHasChunks());
|
||||
assertTrue(c.destinationHasPointers());
|
||||
|
||||
// Type: ff Addr: 014fffac Offset: 0 Len: 0 Format: 60 From: 8a94
|
||||
Pointer d = pf.createPointer(vp6_d, 0);
|
||||
assertEquals(0xff, d.getType());
|
||||
assertEquals(0x014fffac, d.getAddress());
|
||||
assertEquals(0x00, d.getOffset());
|
||||
assertEquals(0x00, d.getLength());
|
||||
assertEquals(0x60, d.getFormat());
|
||||
|
||||
assertFalse(d.destinationCompressed());
|
||||
assertFalse(d.destinationHasStrings());
|
||||
assertFalse(d.destinationHasChunks());
|
||||
assertFalse(d.destinationHasPointers());
|
||||
}
|
||||
|
||||
public void testCreateV6FromMid() throws Exception {
|
||||
PointerFactory pf = new PointerFactory(11);
|
||||
|
||||
// Create a from part way down the byte stream
|
||||
byte[] bytes = new byte[28];
|
||||
System.arraycopy(vp6_b, 0, bytes, 0, 10);
|
||||
System.arraycopy(vp6_a, 0, bytes, 10, 18);
|
||||
|
||||
Pointer a = pf.createPointer(bytes, 10);
|
||||
assertEquals(0x16, a.getType());
|
||||
assertEquals(0x0143aff4, a.getAddress());
|
||||
assertEquals(0x80, a.getOffset());
|
||||
assertEquals(0x54, a.getLength());
|
||||
assertEquals(0x46, a.getFormat());
|
||||
|
||||
assertTrue(a.destinationCompressed());
|
||||
assertTrue(a.destinationHasStrings());
|
||||
assertFalse(a.destinationHasChunks());
|
||||
assertFalse(a.destinationHasPointers());
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user