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/*
* Copyright (c) 2006 Sun Microsystems, Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* - Redistribution of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistribution 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 Sun Microsystems, Inc. or the names of
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* This software is provided "AS IS," without a warranty of any kind. ALL
* EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
* INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
* PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN
* MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR
* ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
* DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR
* ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR
* DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE
* DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
* ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF
* SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
*
* You acknowledge that this software is not designed or intended for use
* in the design, construction, operation or maintenance of any nuclear
* facility.
*
* Sun gratefully acknowledges that this software was originally authored
* and developed by Kenneth Bradley Russell and Christopher John Kline.
*/
package com.sun.opengl.util;
import java.io.*;
import java.nio.*;
/** Utilities for dealing with streams. */
public class StreamUtil {
private StreamUtil() {}
public static byte[] readAll2Array(InputStream stream) throws IOException {
BytesRead bytesRead = readAllImpl(stream);
byte[] data = bytesRead.data;
if (bytesRead.payloadLen != data.length) {
data = new byte[bytesRead.payloadLen];
System.arraycopy(bytesRead.data, 0, data, 0, bytesRead.payloadLen);
}
return data;
}
public static ByteBuffer readAll2Buffer(InputStream stream) throws IOException {
BytesRead bytesRead = readAllImpl(stream);
return BufferUtil.newByteBuffer(bytesRead.data, 0, bytesRead.payloadLen);
}
private static BytesRead readAllImpl(InputStream stream) throws IOException {
// FIXME: Shall we do this here ?
if( !(stream instanceof BufferedInputStream) ) {
stream = new BufferedInputStream(stream);
}
int avail = stream.available();
byte[] data = new byte[avail];
int numRead = 0;
int pos = 0;
do {
if (pos + avail > data.length) {
byte[] newData = new byte[pos + avail];
System.arraycopy(data, 0, newData, 0, pos);
data = newData;
}
numRead = stream.read(data, pos, avail);
if (numRead >= 0) {
pos += numRead;
}
avail = stream.available();
} while (avail > 0 && numRead >= 0);
return new BytesRead(pos, data);
}
private static class BytesRead {
BytesRead(int payloadLen, byte[] data) {
this.payloadLen=payloadLen;
this.data=data;
}
int payloadLen;
byte[] data;
}
}
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