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/*
* Copyright (c) 2009-2010 jMonkeyEngine
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * 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.
*
* * Neither the name of 'jMonkeyEngine' nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS 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 COPYRIGHT OWNER OR
* 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.
*/
package com.jme3.util;
import java.io.*;
/**
* <code>LittleEndien</code> is a class to read littleendien stored data
* via a InputStream. All functions work as defined in DataInput, but
* assume they come from a LittleEndien input stream. Currently used to read .ms3d and .3ds files.
* @author Jack Lindamood
*/
public class LittleEndien extends InputStream implements DataInput {
private BufferedInputStream in;
private BufferedReader inRead;
/**
* Creates a new LittleEndien reader from the given input stream. The
* stream is wrapped in a BufferedReader automatically.
* @param in The input stream to read from.
*/
public LittleEndien(InputStream in) {
this.in = new BufferedInputStream(in);
inRead = new BufferedReader(new InputStreamReader(in));
}
public int read() throws IOException {
return in.read();
}
@Override
public int read(byte[] buf) throws IOException {
return in.read(buf);
}
@Override
public int read(byte[] buf, int off, int len) throws IOException {
return in.read(buf, off, len);
}
public int readUnsignedShort() throws IOException {
return (in.read() & 0xff) | ((in.read() & 0xff) << 8);
}
/**
* read an unsigned int as a long
*/
public long readUInt() throws IOException {
return ((in.read() & 0xff)
| ((in.read() & 0xff) << 8)
| ((in.read() & 0xff) << 16)
| (((long) (in.read() & 0xff)) << 24));
}
public boolean readBoolean() throws IOException {
return (in.read() != 0);
}
public byte readByte() throws IOException {
return (byte) in.read();
}
public int readUnsignedByte() throws IOException {
return in.read();
}
public short readShort() throws IOException {
return (short) this.readUnsignedShort();
}
public char readChar() throws IOException {
return (char) this.readUnsignedShort();
}
public int readInt() throws IOException {
return ((in.read() & 0xff)
| ((in.read() & 0xff) << 8)
| ((in.read() & 0xff) << 16)
| ((in.read() & 0xff) << 24));
}
public long readLong() throws IOException {
return ((in.read() & 0xff)
| ((long) (in.read() & 0xff) << 8)
| ((long) (in.read() & 0xff) << 16)
| ((long) (in.read() & 0xff) << 24)
| ((long) (in.read() & 0xff) << 32)
| ((long) (in.read() & 0xff) << 40)
| ((long) (in.read() & 0xff) << 48)
| ((long) (in.read() & 0xff) << 56));
}
public float readFloat() throws IOException {
return Float.intBitsToFloat(readInt());
}
public double readDouble() throws IOException {
return Double.longBitsToDouble(readLong());
}
public void readFully(byte b[]) throws IOException {
in.read(b, 0, b.length);
}
public void readFully(byte b[], int off, int len) throws IOException {
in.read(b, off, len);
}
public int skipBytes(int n) throws IOException {
return (int) in.skip(n);
}
public String readLine() throws IOException {
return inRead.readLine();
}
public String readUTF() throws IOException {
throw new IOException("Unsupported operation");
}
@Override
public void close() throws IOException {
in.close();
}
@Override
public int available() throws IOException {
return in.available();
}
}
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