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Fix for bug 41946: remember if the complex part of an array property is empty and write back the original empty data 

git-svn-id: https://svn.apache.org/repos/asf/jakarta/poi/trunk@527816 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Yegor Kozlov 2007-04-12 07:36:13 +00:00
parent ed06515fae
commit ca300e53ed
2 changed files with 100 additions and 9 deletions
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28
src/java/org/apache/poi/ddf/EscherArrayProperty.java
View File

@ -42,9 +42,15 @@ public class EscherArrayProperty
*/
private boolean sizeIncludesHeaderSize = true;
/**
* When reading a property from data stream remeber if the complex part is empty and set this flag.
*/
private boolean emptyComplexPart = false;
public EscherArrayProperty( short id, byte[] complexData )
{
super( id, checkComplexData(complexData) );
emptyComplexPart = complexData.length == 0;
}
public EscherArrayProperty( short propertyNumber, boolean isBlipId, byte[] complexData )
@ -161,17 +167,21 @@ public class EscherArrayProperty
*/
public int setArrayData( byte[] data, int offset )
{
short numElements = LittleEndian.getShort(data, offset);
short numReserved = LittleEndian.getShort(data, offset + 2);
short sizeOfElements = LittleEndian.getShort(data, offset + 4);
if (emptyComplexPart){
complexData = new byte[0];
} else {
short numElements = LittleEndian.getShort(data, offset);
short numReserved = LittleEndian.getShort(data, offset + 2);
short sizeOfElements = LittleEndian.getShort(data, offset + 4);
int arraySize = getActualSizeOfElements(sizeOfElements) * numElements;
if (arraySize == complexData.length) {
// The stored data size in the simple block excludes the header size
complexData = new byte[arraySize + 6];
sizeIncludesHeaderSize = false;
int arraySize = getActualSizeOfElements(sizeOfElements) * numElements;
if (arraySize == complexData.length) {
// The stored data size in the simple block excludes the header size
complexData = new byte[arraySize + 6];
sizeIncludesHeaderSize = false;
}
System.arraycopy(data, offset, complexData, 0, complexData.length );
}
System.arraycopy(data, offset, complexData, 0, complexData.length );
return complexData.length;
}

81
src/testcases/org/apache/poi/ddf/TestEscherOptRecord.java
View File

@ -23,6 +23,9 @@ import org.apache.poi.util.HexRead;
import org.apache.poi.util.HexDump;
import java.io.IOException;
import java.util.Arrays;
import java.util.List;
import java.util.Iterator;
public class TestEscherOptRecord extends TestCase
{
@ -249,4 +252,82 @@ public class TestEscherOptRecord extends TestCase
assertEquals(data[i], dest[i]);
}
}
/**
* Test read/write against an OPT record from a real ppt file.
* In PowerPoint is is legal to have array properties with empty complex part.
* In Glen's original implementation complex part is always 6 bytes which resulted
* in +6 extra bytes when writing back out. As the result the ppt becomes unreadable.
*
* Make sure we write back the original empty complex part.
*
* See Bug 41946 for details.
*/
public void test41946() throws IOException {
String dataStr1 =
"03 08 0B F0 00 03 00 00 81 00 30 65 01 00 82 00 98 B2 00 00 83 00 30 65 01 " +
"00 84 00 98 B2 00 00 85 00 00 00 00 00 87 00 01 00 00 00 88 00 00 00 00 00 " +
"89 00 00 00 00 00 BF 00 00 00 0F 00 0C 01 F4 00 00 10 0D 01 00 00 00 20 0E " +
"01 00 00 00 20 80 01 00 00 00 00 81 01 04 00 00 08 82 01 00 00 01 00 83 01 " +
"00 00 00 08 84 01 00 00 01 00 85 01 00 00 00 20 86 41 00 00 00 00 87 C1 00 " +
"00 00 00 88 01 00 00 00 00 89 01 00 00 00 00 8A 01 00 00 00 00 8B 01 00 00 " +
"00 00 8C 01 00 00 00 00 8D 01 00 00 00 00 8E 01 00 00 00 00 8F 01 00 00 00 " +
"00 90 01 00 00 00 00 91 01 00 00 00 00 92 01 00 00 00 00 93 01 00 00 00 00 " +
"94 01 00 00 00 00 95 01 00 00 00 00 96 01 00 00 00 00 97 C1 00 00 00 00 98 " +
"01 00 00 00 00 99 01 00 00 00 00 9A 01 00 00 00 00 9B 01 00 00 00 00 9C 01 " +
"03 00 00 40 BF 01 0C 00 1E 00 C0 01 01 00 00 08 C1 01 00 00 01 00 C2 01 FF " +
"FF FF 00 C3 01 00 00 00 20 C4 01 00 00 00 00 C5 41 00 00 00 00 C6 C1 00 00 " +
"00 00 C7 01 00 00 00 00 C8 01 00 00 00 00 C9 01 00 00 00 00 CA 01 00 00 00 " +
"00 CB 01 35 25 00 00 CC 01 00 00 08 00 CD 01 00 00 00 00 CE 01 00 00 00 00 " +
"CF C1 00 00 00 00 D7 01 02 00 00 00 FF 01 06 00 0E 00 00 02 00 00 00 00 01 " +
"02 02 00 00 08 02 02 CB CB CB 00 03 02 00 00 00 20 04 02 00 00 01 00 05 02 " +
"38 63 00 00 06 02 38 63 00 00 07 02 00 00 00 00 08 02 00 00 00 00 09 02 00 " +
"00 01 00 0A 02 00 00 00 00 0B 02 00 00 00 00 0C 02 00 00 01 00 0D 02 00 00 " +
"00 00 0E 02 00 00 00 00 0F 02 00 01 00 00 10 02 00 00 00 00 11 02 00 00 00 " +
"00 3F 02 00 00 03 00 80 02 00 00 00 00 81 02 00 00 01 00 82 02 05 00 00 00 " +
"83 02 9C 31 00 00 84 02 00 00 00 00 85 02 F0 F9 06 00 86 02 00 00 00 00 87 " +
"02 F7 00 00 10 88 02 00 00 00 20 BF 02 01 00 0F 00 C0 02 00 00 00 00 C1 02 " +
"00 00 00 00 C2 02 64 00 00 00 C3 02 00 00 00 00 C4 02 00 00 00 00 C5 02 00 " +
"00 00 00 C6 02 00 00 00 00 C7 02 00 00 00 00 C8 02 00 00 00 00 C9 02 00 00 " +
"00 00 CA 02 30 75 00 00 CB 02 D0 12 13 00 CC 02 30 ED EC FF CD 02 40 54 89 " +
"00 CE 02 00 80 00 00 CF 02 00 80 FF FF D0 02 00 00 79 FF D1 02 32 00 00 00 " +
"D2 02 20 4E 00 00 D3 02 50 C3 00 00 D4 02 00 00 00 00 D5 02 10 27 00 00 D6 " +
"02 70 94 00 00 D7 02 B0 3C FF FF D8 02 00 00 00 00 D9 02 10 27 00 00 DA 02 " +
"70 94 00 00 FF 02 16 00 1F 00 04 03 01 00 00 00 41 03 A8 29 01 00 42 03 00 " +
"00 00 00 43 03 03 00 00 00 44 03 7C BE 01 00 45 03 00 00 00 00 7F 03 00 00 " +
"0F 00 84 03 7C BE 01 00 85 03 00 00 00 00 86 03 7C BE 01 00 87 03 00 00 00 " +
"00";
EscherOptRecord r = new EscherOptRecord();
byte[] data = HexRead.readFromString( dataStr1 );
r.fillFields( data, 0, new DefaultEscherRecordFactory() );
assertEquals( (short) 0xF00B, r.getRecordId() );
byte[] data1 = r.serialize();
EscherOptRecord opt2 = new EscherOptRecord();
opt2.fillFields( data1, new DefaultEscherRecordFactory() );
byte[] data2 = opt2.serialize();
assertTrue(Arrays.equals(data1, data2));
}
/**
* Test that EscherOptRecord can properly read/write array properties
* with empty complex part.
*/
public void testEmptyArrayProperty() throws IOException {
EscherOptRecord r = new EscherOptRecord();
EscherArrayProperty p = new EscherArrayProperty((short)(EscherProperties.FILL__SHADECOLORS + 0x8000), new byte[0] );
assertEquals(0, p.getNumberOfElementsInArray());
r.addEscherProperty(p);
byte[] data1 = r.serialize();
EscherOptRecord opt2 = new EscherOptRecord();
opt2.fillFields( data1, new DefaultEscherRecordFactory() );
p = (EscherArrayProperty)opt2.getEscherProperties().get(0);
assertEquals(0, p.getNumberOfElementsInArray());
byte[] data2 = opt2.serialize();
assertTrue(Arrays.equals(data1, data2));
}
}