/* * The JTS Topology Suite is a collection of Java classes that * implement the fundamental operations required to validate a given * geo-spatial data set to a known topological specification. * * Copyright (C) 2001 Vivid Solutions * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * * For more information, contact: * * Vivid Solutions * Suite #1A * 2328 Government Street * Victoria BC V8T 5G5 * Canada * * (250)385-6040 * www.vividsolutions.com */ package com.vividsolutions.jts.io; import java.io.IOException; /** * Allows reading a stream of Java primitive datatypes from an underlying * {@link InStream}, * with the representation being in either common byte ordering. */ public class ByteOrderDataInStream { private int byteOrder = ByteOrderValues.BIG_ENDIAN; private InStream stream; // buffers to hold primitive datatypes private byte[] buf1 = new byte[1]; private byte[] buf4 = new byte[4]; private byte[] buf8 = new byte[8]; public ByteOrderDataInStream() { this.stream = null; } public ByteOrderDataInStream(InStream stream) { this.stream = stream; } /** * Allows a single ByteOrderDataInStream to be reused * on multiple InStreams. * * @param stream */ public void setInStream(InStream stream) { this.stream = stream; } public void setOrder(int byteOrder) { this.byteOrder = byteOrder; } /** * * * @return */ public byte readByte() throws IOException { stream.read(buf1); return buf1[0]; } public int readInt() throws IOException { stream.read(buf4); return ByteOrderValues.getInt(buf4, byteOrder); } public long readLong() throws IOException { stream.read(buf8); return ByteOrderValues.getLong(buf8, byteOrder); } public double readDouble() throws IOException { stream.read(buf8); return ByteOrderValues.getDouble(buf8, byteOrder); } }