159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta/* 259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * Copyright (c) 2009-2010 jMonkeyEngine 359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * All rights reserved. 459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * 559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * Redistribution and use in source and binary forms, with or without 659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * modification, are permitted provided that the following conditions are 759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * met: 859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * 959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * * Redistributions of source code must retain the above copyright 1059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * notice, this list of conditions and the following disclaimer. 1159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * 1259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * * Redistributions in binary form must reproduce the above copyright 1359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * notice, this list of conditions and the following disclaimer in the 1459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * documentation and/or other materials provided with the distribution. 1559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * 1659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * * Neither the name of 'jMonkeyEngine' nor the names of its contributors 1759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * may be used to endorse or promote products derived from this software 1859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * without specific prior written permission. 1959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * 2059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 2159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 2259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 2359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 2459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 2559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 2659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 2759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 2859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 2959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 3059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 3159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta */ 3259b2e6871c65f58fdad78cd7229c292f6a177578Scott Bartapackage com.jme3.util; 3359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 3459b2e6871c65f58fdad78cd7229c292f6a177578Scott Bartaimport java.io.*; 3559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 3659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta/** 3759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * <code>LittleEndien</code> is a class to read littleendien stored data 3859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * via a InputStream. All functions work as defined in DataInput, but 3959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * assume they come from a LittleEndien input stream. Currently used to read .ms3d and .3ds files. 4059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * @author Jack Lindamood 4159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta */ 4259b2e6871c65f58fdad78cd7229c292f6a177578Scott Bartapublic class LittleEndien extends InputStream implements DataInput { 4359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 4459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta private BufferedInputStream in; 4559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta private BufferedReader inRead; 4659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 4759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta /** 4859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * Creates a new LittleEndien reader from the given input stream. The 4959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * stream is wrapped in a BufferedReader automatically. 5059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * @param in The input stream to read from. 5159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta */ 5259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public LittleEndien(InputStream in) { 5359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta this.in = new BufferedInputStream(in); 5459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta inRead = new BufferedReader(new InputStreamReader(in)); 5559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 5659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 5759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public int read() throws IOException { 5859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta return in.read(); 5959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 6059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 6159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta @Override 6259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public int read(byte[] buf) throws IOException { 6359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta return in.read(buf); 6459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 6559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 6659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta @Override 6759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public int read(byte[] buf, int off, int len) throws IOException { 6859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta return in.read(buf, off, len); 6959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 7059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 7159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public int readUnsignedShort() throws IOException { 7259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta return (in.read() & 0xff) | ((in.read() & 0xff) << 8); 7359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 7459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 7559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta /** 7659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * read an unsigned int as a long 7759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta */ 7859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public long readUInt() throws IOException { 7959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta return ((in.read() & 0xff) 8059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta | ((in.read() & 0xff) << 8) 8159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta | ((in.read() & 0xff) << 16) 8259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta | (((long) (in.read() & 0xff)) << 24)); 8359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 8459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 8559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public boolean readBoolean() throws IOException { 8659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta return (in.read() != 0); 8759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 8859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 8959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public byte readByte() throws IOException { 9059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta return (byte) in.read(); 9159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 9259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 9359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public int readUnsignedByte() throws IOException { 9459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta return in.read(); 9559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 9659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 9759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public short readShort() throws IOException { 9859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta return (short) this.readUnsignedShort(); 9959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 10059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 10159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public char readChar() throws IOException { 10259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta return (char) this.readUnsignedShort(); 10359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 10459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 10559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public int readInt() throws IOException { 10659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta return ((in.read() & 0xff) 10759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta | ((in.read() & 0xff) << 8) 10859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta | ((in.read() & 0xff) << 16) 10959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta | ((in.read() & 0xff) << 24)); 11059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 11159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 11259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public long readLong() throws IOException { 11359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta return ((in.read() & 0xff) 11459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta | ((long) (in.read() & 0xff) << 8) 11559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta | ((long) (in.read() & 0xff) << 16) 11659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta | ((long) (in.read() & 0xff) << 24) 11759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta | ((long) (in.read() & 0xff) << 32) 11859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta | ((long) (in.read() & 0xff) << 40) 11959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta | ((long) (in.read() & 0xff) << 48) 12059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta | ((long) (in.read() & 0xff) << 56)); 12159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 12259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 12359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public float readFloat() throws IOException { 12459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta return Float.intBitsToFloat(readInt()); 12559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 12659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 12759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public double readDouble() throws IOException { 12859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta return Double.longBitsToDouble(readLong()); 12959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 13059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 13159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public void readFully(byte b[]) throws IOException { 13259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta in.read(b, 0, b.length); 13359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 13459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 13559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public void readFully(byte b[], int off, int len) throws IOException { 13659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta in.read(b, off, len); 13759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 13859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 13959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public int skipBytes(int n) throws IOException { 14059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta return (int) in.skip(n); 14159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 14259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 14359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public String readLine() throws IOException { 14459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta return inRead.readLine(); 14559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 14659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 14759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public String readUTF() throws IOException { 14859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta throw new IOException("Unsupported operation"); 14959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 15059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 15159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta @Override 15259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public void close() throws IOException { 15359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta in.close(); 15459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 15559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 15659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta @Override 15759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public int available() throws IOException { 15859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta return in.available(); 15959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 16059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta} 161