| /* ==================================================================== |
| 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.util.Arrays; |
| |
| import org.apache.poi.util.Internal; |
| |
| /** |
| * A data structure used to hold some data we don't |
| * understand / can't handle, so we have it available |
| * for when we come to write back out again |
| */ |
| @Internal |
| public final class UnhandledDataStructure |
| { |
| private final byte[] _buf; |
| |
| public UnhandledDataStructure(byte[] buf, int offset, int length) |
| { |
| // Sanity check the size they've asked for |
| int offsetEnd = offset + length; |
| if (offsetEnd > buf.length || offsetEnd < 0) |
| { |
| throw new IndexOutOfBoundsException("Buffer Length is " + buf.length + " " + |
| "but code is tried to read " + length + " " + |
| "from offset " + offset + " to " + offsetEnd); |
| } |
| if (offset < 0 || length < 0) |
| { |
| throw new IndexOutOfBoundsException("Offset and Length must both be >= 0, negative " + |
| "indicies are not permitted - code is tried to read " + length + " from offset " + offset); |
| } |
| |
| // Save that requested portion of the data |
| _buf = Arrays.copyOfRange(buf, offset, offsetEnd); |
| |
| } |
| |
| /*package*/ byte[] getBuf() |
| { |
| return _buf; |
| } |
| } |