| /* ==================================================================== |
| 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.pointers; |
| |
| import org.apache.poi.util.LittleEndian; |
| |
| /** |
| * Factor class to create the appropriate pointers, based on the version |
| * of the file |
| */ |
| public final class PointerFactory { |
| private int version; |
| public PointerFactory(int version) { |
| this.version = version; |
| } |
| public int getVersion() { return version; } |
| |
| public Pointer createPointer(byte[] data, int offset) { |
| Pointer p; |
| if(version >= 6) { |
| p = new PointerV6(); |
| p.type = LittleEndian.getInt(data, offset+0); |
| p.address = (int)LittleEndian.getUInt(data, offset+4); |
| p.offset = (int)LittleEndian.getUInt(data, offset+8); |
| p.length = (int)LittleEndian.getUInt(data, offset+12); |
| p.format = LittleEndian.getShort(data, offset+16); |
| |
| return p; |
| } else if(version == 5) { |
| throw new RuntimeException("TODO Support v5 Pointers"); |
| } else { |
| throw new IllegalArgumentException("Visio files with versions below 5 are not supported, yours was " + version); |
| } |
| } |
| } |