2007-06-19 15:55:30 -04:00
|
|
|
/* ====================================================================
|
|
|
|
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.streams;
|
|
|
|
|
|
|
|
import java.util.ArrayList;
|
|
|
|
|
|
|
|
import org.apache.poi.hdgf.chunks.Chunk;
|
|
|
|
import org.apache.poi.hdgf.chunks.ChunkFactory;
|
|
|
|
import org.apache.poi.hdgf.pointers.Pointer;
|
|
|
|
|
|
|
|
public class ChunkStream extends Stream {
|
|
|
|
private ChunkFactory chunkFactory;
|
|
|
|
/** All the Chunks we contain */
|
|
|
|
private Chunk[] chunks;
|
|
|
|
|
|
|
|
protected ChunkStream(Pointer pointer, StreamStore store, ChunkFactory chunkFactory) {
|
|
|
|
super(pointer, store);
|
|
|
|
this.chunkFactory = chunkFactory;
|
2007-06-19 18:41:33 -04:00
|
|
|
|
|
|
|
// For compressed stores, we require all of the data
|
|
|
|
store.copyBlockHeaderToContents();
|
2007-06-19 15:55:30 -04:00
|
|
|
}
|
|
|
|
|
|
|
|
public Chunk[] getChunks() { return chunks; }
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Process the contents of the stream out into chunks
|
|
|
|
*/
|
|
|
|
public void findChunks() {
|
|
|
|
ArrayList chunksA = new ArrayList();
|
|
|
|
|
2007-06-28 07:43:11 -04:00
|
|
|
if(getPointer().getOffset() == 0x64b3) {
|
|
|
|
int i = 0;
|
|
|
|
i++;
|
|
|
|
}
|
|
|
|
|
2007-06-19 15:55:30 -04:00
|
|
|
int pos = 0;
|
|
|
|
byte[] contents = getStore().getContents();
|
|
|
|
while(pos < contents.length) {
|
|
|
|
Chunk chunk = chunkFactory.createChunk(contents, pos);
|
|
|
|
chunksA.add(chunk);
|
|
|
|
|
|
|
|
pos += chunk.getOnDiskSize();
|
|
|
|
}
|
|
|
|
|
|
|
|
chunks = (Chunk[])chunksA.toArray(new Chunk[chunksA.size()]);
|
|
|
|
}
|
|
|
|
}
|