sackley 2003/11/10 03:53:03 Added: src/scratchpad/src/org/apache/poi/hwpf/sprm SprmBuffer.java Log: initial check in Revision Changes Path 1.1 jakarta-poi/src/scratchpad/src/org/apache/poi/hwpf/sprm/SprmBuffer.java Index: SprmBuffer.java =================================================================== /* ==================================================================== * The Apache Software License, Version 1.1 * * Copyright (c) 2003 The Apache Software Foundation. All rights * reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * 3. The end-user documentation included with the redistribution, * if any, must include the following acknowledgment: * "This product includes software developed by the * Apache Software Foundation (http://www.apache.org/)." * Alternately, this acknowledgment may appear in the software itself, * if and wherever such third-party acknowledgments normally appear. * * 4. The names "Apache" and "Apache Software Foundation" and * "Apache POI" must not be used to endorse or promote products * derived from this software without prior written permission. For * written permission, please contact [EMAIL PROTECTED] * * 5. Products derived from this software may not be called "Apache", * "Apache POI", nor may "Apache" appear in their name, without * prior written permission of the Apache Software Foundation. * * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * ==================================================================== * * This software consists of voluntary contributions made by many * individuals on behalf of the Apache Software Foundation. For more * information on the Apache Software Foundation, please see * <http://www.apache.org/>. */ package org.apache.poi.hwpf.sprm; import org.apache.poi.util.LittleEndian; public class SprmBuffer { byte[] _buf; int _offset; public SprmBuffer(byte[] buf) { _offset = _buf.length; } public void addSprm(short opcode, byte operand) { int addition = LittleEndian.SHORT_SIZE + LittleEndian.BYTE_SIZE; ensureCapacity(addition); LittleEndian.putShort(_buf, _offset, opcode); _offset += LittleEndian.SHORT_SIZE; _buf[_offset++] = operand; } public void addSprm(short opcode, short operand) { int addition = LittleEndian.SHORT_SIZE + LittleEndian.SHORT_SIZE; ensureCapacity(addition); LittleEndian.putShort(_buf, _offset, opcode); _offset += LittleEndian.SHORT_SIZE; LittleEndian.putShort(_buf, _offset, operand); _offset += LittleEndian.SHORT_SIZE; } public void addSprm(short opcode, int operand) { int addition = LittleEndian.SHORT_SIZE + LittleEndian.INT_SIZE; ensureCapacity(addition); LittleEndian.putShort(_buf, _offset, opcode); _offset += LittleEndian.SHORT_SIZE; LittleEndian.putInt(_buf, _offset, operand); _offset += LittleEndian.INT_SIZE; } public void addSprm(short opcode, byte[] operand) { int addition = LittleEndian.SHORT_SIZE + LittleEndian.BYTE_SIZE + operand.length; ensureCapacity(addition); LittleEndian.putShort(_buf, _offset, opcode); _offset += LittleEndian.SHORT_SIZE; _buf[_offset++] = (byte)operand.length; System.arraycopy(operand, 0, _buf, _offset, operand.length); } public byte[] toByteArray() { return _buf; } private void ensureCapacity(int addition) { if (_offset + addition >= _buf.length) { // add 6 more than they need for use the next iteration byte[] newBuf = new byte[_offset + addition + 6]; System.arraycopy(_buf, 0, newBuf, 0, _buf.length); } } }
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