/* ==================================================================== | |
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.hslf.record; | |
import java.lang.reflect.Constructor; | |
import java.util.Map; | |
import org.apache.poi.ddf.*; | |
import org.apache.poi.util.LittleEndian; | |
/** | |
* Generates escher records when provided the byte array containing those records. | |
* | |
* @see EscherRecordFactory | |
*/ | |
public class HSLFEscherRecordFactory extends DefaultEscherRecordFactory { | |
private static Class<?>[] escherRecordClasses = { EscherPlaceholder.class, HSLFEscherClientDataRecord.class }; | |
private static Map<Short, Constructor<? extends EscherRecord>> recordsMap = recordsToMap( escherRecordClasses ); | |
/** | |
* Creates an instance of the escher record factory | |
*/ | |
public HSLFEscherRecordFactory() { | |
// no instance initialisation | |
} | |
@Override | |
public EscherRecord createRecord(byte[] data, int offset) { | |
short options = LittleEndian.getShort( data, offset ); | |
short recordId = LittleEndian.getShort( data, offset + 2 ); | |
// int remainingBytes = LittleEndian.getInt( data, offset + 4 ); | |
Constructor<? extends EscherRecord> recordConstructor = recordsMap.get(Short.valueOf(recordId)); | |
if (recordConstructor == null) { | |
return super.createRecord(data, offset); | |
} | |
EscherRecord escherRecord = null; | |
try { | |
escherRecord = recordConstructor.newInstance(new Object[] {}); | |
} catch (Exception e) { | |
return super.createRecord(data, offset); | |
} | |
escherRecord.setRecordId(recordId); | |
escherRecord.setOptions(options); | |
if (escherRecord instanceof EscherContainerRecord) { | |
((EscherContainerRecord)escherRecord).fillFields(data, offset, this); | |
} | |
return escherRecord; | |
} | |
} |