109 lines
3.7 KiB
Java
109 lines
3.7 KiB
Java
/* ====================================================================
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Licensed to the Apache Software Foundation (ASF) under one or more
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contributor license agreements. See the NOTICE file distributed with
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this work for additional information regarding copyright ownership.
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The ASF licenses this file to You under the Apache License, Version 2.0
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(the "License"); you may not use this file except in compliance with
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the License. You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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==================================================================== */
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package org.apache.poi.hssf.record;
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import org.apache.poi.util.LittleEndian;
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/**
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* Title: Continue Record(0x003C) - Helper class used primarily for SST Records <P>
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* Description: handles overflow for prior record in the input
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* stream; content is tailored to that prior record<P>
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* @author Marc Johnson (mjohnson at apache dot org)
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* @author Andrew C. Oliver (acoliver at apache dot org)
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* @author Csaba Nagy (ncsaba at yahoo dot com)
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*/
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public final class ContinueRecord extends Record {
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public final static short sid = 0x003C;
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private byte[] _data;
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public ContinueRecord(byte[] data) {
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_data = data;
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}
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protected int getDataSize() {
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return _data.length;
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}
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public int serialize(int offset, byte[] data) {
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return write(data, offset, null, _data);
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}
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/**
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* get the data for continuation
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* @return byte array containing all of the continued data
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*/
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public byte [] getData()
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{
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return _data;
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}
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public String toString()
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{
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StringBuffer buffer = new StringBuffer();
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buffer.append("[CONTINUE RECORD]\n");
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buffer.append(" .id = ").append(Integer.toHexString(sid))
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.append("\n");
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buffer.append("[/CONTINUE RECORD]\n");
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return buffer.toString();
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}
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public short getSid()
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{
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return sid;
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}
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/**
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* Fill the fields. Only thing is, this record has no fields --
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*
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* @param in the RecordInputstream to read the record from
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*/
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public ContinueRecord(RecordInputStream in)
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{
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_data = in.readRemainder();
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}
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public Object clone() {
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return new ContinueRecord(_data);
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}
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/**
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* Writes the full encoding of a Continue record without making an instance
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*/
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public static int write(byte[] destBuf, int destOffset, Byte initialDataByte, byte[] srcData) {
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return write(destBuf, destOffset, initialDataByte, srcData, 0, srcData.length);
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}
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/**
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* @param initialDataByte (optional - often used for unicode flag).
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* If supplied, this will be written before srcData
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* @return the total number of bytes written
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*/
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public static int write(byte[] destBuf, int destOffset, Byte initialDataByte, byte[] srcData, int srcOffset, int len) {
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int totalLen = len + (initialDataByte == null ? 0 : 1);
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LittleEndian.putUShort(destBuf, destOffset, sid);
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LittleEndian.putUShort(destBuf, destOffset + 2, totalLen);
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int pos = destOffset + 4;
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if (initialDataByte != null) {
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LittleEndian.putByte(destBuf, pos, initialDataByte.byteValue());
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pos += 1;
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}
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System.arraycopy(srcData, srcOffset, destBuf, pos, len);
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return 4 + totalLen;
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}
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}
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