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Fix bug #45290 - Support odd files where the POIFS header block comes after the data blocks, and is on the data blocks list 

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@713447 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Nick Burch 2008-11-12 18:25:33 +00:00
parent 84d10b7ecd
commit 1b24850c7c
13 changed files with 69 additions and 32 deletions
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1
src/documentation/content/xdocs/changes.xml
View File

@ -37,6 +37,7 @@
<!-- Don't forget to update status.xml too! -->
<release version="3.5-beta4" date="2008-??-??">
<action dev="POI-DEVELOPERS" type="fix">45290 - Support odd files where the POIFS header block comes after the data blocks, and is on the data blocks list</header>
<action dev="POI-DEVELOPERS" type="fix">46184 - More odd escaped date formats</action>
<action dev="POI-DEVELOPERS" type="add">Include the sheet number in the output of XLS2CSVmra</action>
<action dev="POI-DEVELOPERS" type="fix">46043 - correctly write out HPSF properties with HWPF</action>

1
src/documentation/content/xdocs/status.xml
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@ -34,6 +34,7 @@
<!-- Don't forget to update changes.xml too! -->
<changes>
<release version="3.5-beta4" date="2008-??-??">
<action dev="POI-DEVELOPERS" type="fix">45290 - Support odd files where the POIFS header block comes after the data blocks, and is on the data blocks list</header>
<action dev="POI-DEVELOPERS" type="fix">46184 - More odd escaped date formats</action>
<action dev="POI-DEVELOPERS" type="add">Include the sheet number in the output of XLS2CSVmra</action>
<action dev="POI-DEVELOPERS" type="fix">46043 - correctly write out HPSF properties with HWPF</action>

8
src/java/org/apache/poi/poifs/eventfilesystem/POIFSReader.java
View File

@ -245,13 +245,13 @@ public class POIFSReader
{
document =
new POIFSDocument(name, small_blocks
.fetchBlocks(startBlock), size);
.fetchBlocks(startBlock, -1), size);
}
else
{
document =
new POIFSDocument(name, big_blocks
.fetchBlocks(startBlock), size);
.fetchBlocks(startBlock, -1), size);
}
while (listeners.hasNext())
{
@ -270,11 +270,11 @@ public class POIFSReader
// consume the document's data and discard it
if (property.shouldUseSmallBlocks())
{
small_blocks.fetchBlocks(startBlock);
small_blocks.fetchBlocks(startBlock, -1);
}
else
{
big_blocks.fetchBlocks(startBlock);
big_blocks.fetchBlocks(startBlock, -1);
}
}
}

28
src/java/org/apache/poi/poifs/filesystem/POIFSFileSystem.java
View File

@ -173,11 +173,16 @@ public class POIFSFileSystem
data_blocks);
// init documents
processProperties(SmallBlockTableReader
.getSmallDocumentBlocks(data_blocks, properties
.getRoot(), header_block_reader
.getSBATStart()), data_blocks, properties.getRoot()
.getChildren(), null);
processProperties(
SmallBlockTableReader.getSmallDocumentBlocks(
data_blocks, properties.getRoot(),
header_block_reader.getSBATStart()
),
data_blocks,
properties.getRoot().getChildren(),
null,
header_block_reader.getPropertyStart()
);
}
/**
* @param stream the stream to be closed
@ -491,7 +496,8 @@ public class POIFSFileSystem
private void processProperties(final BlockList small_blocks,
final BlockList big_blocks,
final Iterator properties,
final DirectoryNode dir)
final DirectoryNode dir,
final int headerPropertiesStartAt)
throws IOException
{
while (properties.hasNext())
@ -511,7 +517,8 @@ public class POIFSFileSystem
processProperties(
small_blocks, big_blocks,
(( DirectoryProperty ) property).getChildren(), new_dir);
(( DirectoryProperty ) property).getChildren(),
new_dir, headerPropertiesStartAt);
}
else
{
@ -522,14 +529,15 @@ public class POIFSFileSystem
if (property.shouldUseSmallBlocks())
{
document =
new POIFSDocument(name, small_blocks
.fetchBlocks(startBlock), size);
new POIFSDocument(name,
small_blocks.fetchBlocks(startBlock, headerPropertiesStartAt),
size);
}
else
{
document =
new POIFSDocument(name,
big_blocks.fetchBlocks(startBlock),
big_blocks.fetchBlocks(startBlock, headerPropertiesStartAt),
size);
}
parent.createDocument(document);

2
src/java/org/apache/poi/poifs/property/PropertyTable.java
View File

@ -78,7 +78,7 @@ public class PropertyTable
_blocks = null;
_properties =
PropertyFactory
.convertToProperties(blockList.fetchBlocks(startBlock));
.convertToProperties(blockList.fetchBlocks(startBlock, -1));
populatePropertyTree(( DirectoryProperty ) _properties.get(0));
}

21
src/java/org/apache/poi/poifs/storage/BlockAllocationTableReader.java
View File

@ -179,17 +179,34 @@ public class BlockAllocationTableReader
*/
ListManagedBlock [] fetchBlocks(final int startBlock,
final int headerPropertiesStartBlock,
final BlockList blockList)
throws IOException
{
List blocks = new ArrayList();
int currentBlock = startBlock;
boolean firstPass = true;
while (currentBlock != POIFSConstants.END_OF_CHAIN)
{
// Process the chain from the start to the end
// Normally we have header, data, end
// Sometimes we have data, header, end
// For those cases, stop at the header, not the end
while (currentBlock != POIFSConstants.END_OF_CHAIN) {
try {
blocks.add(blockList.remove(currentBlock));
currentBlock = _entries.get(currentBlock);
} catch(IOException e) {
if(currentBlock == headerPropertiesStartBlock) {
// Special case where things are in the wrong order
System.err.println("Warning, header block comes after data blocks in POIFS block listing");
currentBlock = POIFSConstants.END_OF_CHAIN;
} else {
// Ripple up
throw e;
}
}
}
return ( ListManagedBlock [] ) blocks
.toArray(new ListManagedBlock[ 0 ]);
}

3
src/java/org/apache/poi/poifs/storage/BlockList.java
View File

@ -59,13 +59,14 @@ public interface BlockList
* blocks are removed from the list.
*
* @param startBlock the index of the first block in the stream
* @param headerPropertiesStartBlock the index of the first header block in the stream
*
* @return the stream as an array of correctly ordered blocks
*
* @exception IOException if blocks are missing
*/
public ListManagedBlock [] fetchBlocks(final int startBlock)
public ListManagedBlock [] fetchBlocks(final int startBlock, final int headerPropertiesStartBlock)
throws IOException;
/**

10
src/java/org/apache/poi/poifs/storage/BlockListImpl.java
View File

@ -94,8 +94,10 @@ class BlockListImpl
result = _blocks[ index ];
if (result == null)
{
throw new IOException("block[ " + index
+ " ] already removed");
throw new IOException(
"block[ " + index + " ] already removed - " +
"does your POIFS have circular or duplicate block references?"
);
}
_blocks[ index ] = null;
}
@ -119,7 +121,7 @@ class BlockListImpl
* @exception IOException if blocks are missing
*/
public ListManagedBlock [] fetchBlocks(final int startBlock)
public ListManagedBlock [] fetchBlocks(final int startBlock, final int headerPropertiesStartBlock)
throws IOException
{
if (_bat == null)
@ -127,7 +129,7 @@ class BlockListImpl
throw new IOException(
"Improperly initialized list: no block allocation table provided");
}
return _bat.fetchBlocks(startBlock, this);
return _bat.fetchBlocks(startBlock, headerPropertiesStartBlock, this);
}
/**

4
src/java/org/apache/poi/poifs/storage/SmallBlockTableReader.java
View File

@ -56,9 +56,9 @@ public class SmallBlockTableReader
{
BlockList list =
new SmallDocumentBlockList(SmallDocumentBlock
.extract(blockList.fetchBlocks(root.getStartBlock())));
.extract(blockList.fetchBlocks(root.getStartBlock(), -1)));
new BlockAllocationTableReader(blockList.fetchBlocks(sbatStart),
new BlockAllocationTableReader(blockList.fetchBlocks(sbatStart, -1),
list);
return list;
}

BIN
src/testcases/org/apache/poi/hssf/data/45290.xls Normal file
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Binary file not shown.

13
src/testcases/org/apache/poi/hssf/usermodel/TestBugs.java
View File

@ -27,9 +27,6 @@ import java.util.List;
import junit.framework.AssertionFailedError;
import junit.framework.TestCase;
import org.apache.poi.ss.util.Region;
import org.apache.poi.ss.util.CellRangeAddress;
import org.apache.poi.hssf.HSSFTestDataSamples;
import org.apache.poi.hssf.model.Workbook;
import org.apache.poi.hssf.record.CellValueRecordInterface;
@ -38,6 +35,7 @@ import org.apache.poi.hssf.record.NameRecord;
import org.apache.poi.hssf.record.aggregates.FormulaRecordAggregate;
import org.apache.poi.hssf.record.formula.DeletedArea3DPtg;
import org.apache.poi.hssf.record.formula.Ptg;
import org.apache.poi.ss.util.CellRangeAddress;
import org.apache.poi.util.TempFile;
/**
@ -1533,4 +1531,13 @@ public final class TestBugs extends TestCase {
assertEquals(7, wb.getNumberOfSheets());
wb = HSSFTestDataSamples.writeOutAndReadBack(wb);
}
/**
* Odd POIFS blocks issue:
* block[ 44 ] already removed from org.apache.poi.poifs.storage.BlockListImpl.remove
*/
public void test45290() {
HSSFWorkbook wb = openSample("45290.xls");
assertEquals(1, wb.getNumberOfSheets());
}
}

2
src/testcases/org/apache/poi/poifs/storage/TestBlockAllocationTableReader.java
View File

@ -1325,7 +1325,7 @@ public class TestBlockAllocationTableReader
try
{
ListManagedBlock[] dataBlocks =
table.fetchBlocks(start_blocks[ j ], list);
table.fetchBlocks(start_blocks[ j ], -1, list);
if (expected_length[ j ] == -1)
{

2
src/testcases/org/apache/poi/poifs/storage/TestBlockListImpl.java
View File

@ -285,7 +285,7 @@ public class TestBlockListImpl
try
{
ListManagedBlock[] dataBlocks =
list.fetchBlocks(start_blocks[ j ]);
list.fetchBlocks(start_blocks[ j ], -1);
if (expected_length[ j ] == -1)
{