org.apache.poi.hwpf.model.ComplexFileTable Maven / Gradle / Ivy
/* ====================================================================
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.hwpf.model;
import java.io.IOException;
import org.apache.poi.util.LittleEndian;
import org.apache.poi.hwpf.model.io.*;
public class ComplexFileTable
{
private static final byte GRPPRL_TYPE = 1;
private static final byte TEXT_PIECE_TABLE_TYPE = 2;
protected TextPieceTable _tpt;
public ComplexFileTable()
{
_tpt = new TextPieceTable();
}
public ComplexFileTable(byte[] documentStream, byte[] tableStream, int offset, int fcMin) throws IOException
{
//skips through the prms before we reach the piece table. These contain data
//for actual fast saved files
while (tableStream[offset] == GRPPRL_TYPE)
{
offset++;
int skip = LittleEndian.getShort(tableStream, offset);
offset += LittleEndian.SHORT_SIZE + skip;
}
if(tableStream[offset] != TEXT_PIECE_TABLE_TYPE)
{
throw new IOException("The text piece table is corrupted");
}
else
{
int pieceTableSize = LittleEndian.getInt(tableStream, ++offset);
offset += LittleEndian.INT_SIZE;
_tpt = new TextPieceTable(documentStream, tableStream, offset, pieceTableSize, fcMin);
}
}
public TextPieceTable getTextPieceTable()
{
return _tpt;
}
public void writeTo(HWPFFileSystem sys)
throws IOException
{
HWPFOutputStream docStream = sys.getStream("WordDocument");
HWPFOutputStream tableStream = sys.getStream("1Table");
tableStream.write(TEXT_PIECE_TABLE_TYPE);
byte[] table = _tpt.writeTo(docStream);
byte[] numHolder = new byte[LittleEndian.INT_SIZE];
LittleEndian.putInt(numHolder, table.length);
tableStream.write(numHolder);
tableStream.write(table);
}
}