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Should have been part of c746085 (More fixes to allow EscherContainerRecord to exclusively maintain 'child records' field due to r745976 / r746018) 

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@746086 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Josh Micich 2009-02-20 01:57:45 +00:00
parent f67a432970
commit d58e8cb0ac
1 changed files with 70 additions and 30 deletions
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100
src/java/org/apache/poi/ddf/EscherContainerRecord.java
View File

@ -1,4 +1,3 @@
/* ====================================================================
Licensed to the Apache Software Foundation (ASF) under one or more
contributor license agreements. See the NOTICE file distributed with
@ -15,7 +14,7 @@
See the License for the specific language governing permissions and
limitations under the License.
==================================================================== */
package org.apache.poi.ddf;
import org.apache.poi.util.HexDump;
@ -24,6 +23,7 @@ import org.apache.poi.util.LittleEndian;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.NoSuchElementException;
import java.io.PrintWriter;
/**
@ -44,21 +44,18 @@ public final class EscherContainerRecord extends EscherRecord {
private final List<EscherRecord> _childRecords = new ArrayList<EscherRecord>();
public int fillFields( byte[] data, int offset, EscherRecordFactory recordFactory )
{
int bytesRemaining = readHeader( data, offset );
public int fillFields(byte[] data, int pOffset, EscherRecordFactory recordFactory) {
int bytesRemaining = readHeader(data, pOffset);
int bytesWritten = 8;
offset += 8;
while ( bytesRemaining > 0 && offset < data.length )
{
int offset = pOffset + 8;
while (bytesRemaining > 0 && offset < data.length) {
EscherRecord child = recordFactory.createRecord(data, offset);
int childBytesWritten = child.fillFields( data, offset, recordFactory );
int childBytesWritten = child.fillFields(data, offset, recordFactory);
bytesWritten += childBytesWritten;
offset += childBytesWritten;
bytesRemaining -= childBytesWritten;
addChildRecord(child);
if (offset >= data.length && bytesRemaining > 0)
{
if (offset >= data.length && bytesRemaining > 0) {
System.out.println("WARNING: " + bytesRemaining + " bytes remaining but no space left");
}
}
@ -98,7 +95,7 @@ public final class EscherContainerRecord extends EscherRecord {
}
return 8 + childRecordsSize;
}
/**
* Do any of our (top level) children have the
* given recordId?
@ -113,25 +110,59 @@ public final class EscherContainerRecord extends EscherRecord {
}
return false;
}
public EscherRecord getChild( int index ) {
return _childRecords.get(index);
}
/**
* @return a copy of the list of all the child records of the container.
*/
public List<EscherRecord> getChildRecords() {
return new ArrayList<EscherRecord>(_childRecords);
}
public Iterator<EscherRecord> getChildIterator() {
return new ReadOnlyIterator(_childRecords);
}
private static final class ReadOnlyIterator implements Iterator<EscherRecord> {
private final List<EscherRecord> _list;
private int _index;
public ReadOnlyIterator(List<EscherRecord> list) {
_list = list;
_index = 0;
}
public boolean hasNext() {
return _index < _list.size();
}
public EscherRecord next() {
if (!hasNext()) {
throw new NoSuchElementException();
}
return _list.get(_index++);
}
public void remove() {
throw new UnsupportedOperationException();
}
}
/**
* replaces the internal child list with the contents of the supplied <tt>childRecords</tt>
*/
public void setChildRecords(List<EscherRecord> childRecords) {
if (childRecords == _childRecords) {
throw new IllegalStateException("Child records private data member has escaped");
}
if (childRecords == _childRecords) {
throw new IllegalStateException("Child records private data member has escaped");
}
_childRecords.clear();
_childRecords.addAll(childRecords);
}
public boolean removeChildRecord(EscherRecord toBeRemoved) {
return _childRecords.remove(toBeRemoved);
}
/**
* Returns all of our children which are also
* EscherContainers (may be 0, 1, or vary rarely
@ -143,7 +174,7 @@ public final class EscherContainerRecord extends EscherRecord {
while (iterator.hasNext()) {
EscherRecord r = iterator.next();
if(r instanceof EscherContainerRecord) {
containers.add((EscherContainerRecord) r);
containers.add((EscherContainerRecord) r);
}
}
return containers;
@ -178,12 +209,22 @@ public final class EscherContainerRecord extends EscherRecord {
}
public void addChildRecord(EscherRecord record) {
_childRecords.add( record );
_childRecords.add(record);
}
public void addChildBefore(EscherRecord record, int insertBeforeRecordId) {
for (int i = 0; i < _childRecords.size(); i++) {
EscherRecord rec = _childRecords.get(i);
if(rec.getRecordId() == insertBeforeRecordId){
_childRecords.add(i++, record);
// TODO - keep looping? Do we expect multiple matches?
}
}
}
public String toString()
{
return toString("");
return toString("");
}
public String toString(String indent)
{
@ -192,27 +233,27 @@ public final class EscherContainerRecord extends EscherRecord {
StringBuffer children = new StringBuffer();
if (_childRecords.size() > 0) {
children.append( " children: " + nl );
int count = 0;
for ( Iterator<EscherRecord> iterator = _childRecords.iterator(); iterator.hasNext(); )
{
String newIndent = indent + " ";
String newIndent = indent + " ";
EscherRecord record = iterator.next();
children.append(newIndent + "Child " + count + ":" + nl);
if(record instanceof EscherContainerRecord) {
EscherContainerRecord ecr = (EscherContainerRecord)record;
children.append( ecr.toString(newIndent));
EscherContainerRecord ecr = (EscherContainerRecord)record;
children.append( ecr.toString(newIndent));
} else {
children.append( record.toString() );
children.append( record.toString() );
}
count++;
}
}
return
indent + getClass().getName() + " (" + getRecordName() + "):" + nl +
return
indent + getClass().getName() + " (" + getRecordName() + "):" + nl +
indent + " isContainer: " + isContainerRecord() + nl +
indent + " options: 0x" + HexDump.toHex( getOptions() ) + nl +
indent + " recordId: 0x" + HexDump.toHex( getRecordId() ) + nl +
@ -248,5 +289,4 @@ public final class EscherContainerRecord extends EscherRecord {
}
}
}
}