/*
* 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.revolsys.geometry.wkb;
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 {
// buffers to hold primitive datatypes
private final byte[] buf1 = new byte[1];
private final byte[] buf4 = new byte[4];
private final byte[] buf8 = new byte[8];
private int byteOrder = ByteOrderValues.BIG_ENDIAN;
private InStream stream;
public ByteOrderDataInStream() {
this.stream = null;
}
public ByteOrderDataInStream(final InStream stream) {
this.stream = stream;
}
/**
* Reads a byte value
*
* @return the byte read
*/
public byte readByte() throws IOException {
this.stream.read(this.buf1);
return this.buf1[0];
}
public double readDouble() throws IOException {
this.stream.read(this.buf8);
return ByteOrderValues.getDouble(this.buf8, this.byteOrder);
}
public int readInt() throws IOException {
this.stream.read(this.buf4);
return ByteOrderValues.getInt(this.buf4, this.byteOrder);
}
public long readLong() throws IOException {
this.stream.read(this.buf8);
return ByteOrderValues.getLong(this.buf8, this.byteOrder);
}
/**
* Allows a single ByteOrderDataInStream to be reused
* on multiple InStreams.
*
* @param stream
*/
public void setInStream(final InStream stream) {
this.stream = stream;
}
public void setOrder(final int byteOrder) {
this.byteOrder = byteOrder;
}
}