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/*
* This file is part of rasdaman community.
*
* Rasdaman community is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Rasdaman community 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with rasdaman community. If not, see <http://www.gnu.org/licenses/>.
*
* Copyright 2003, 2004, 2005, 2006, 2007, 2008, 2009 Peter Baumann /
rasdaman GmbH.
*
* For more information please see <http://www.rasdaman.org>
* or contact Peter Baumann via <baumann@rasdaman.com>.
*/
/** ***********************************************************
* <pre>
*
* PURPOSE:
*
*
*
* COMMENTS:
*
* </pre>
*********************************************************** */
package rasj.clientcommhttp;
import java.io.*;
import java.net.*;
import java.lang.*;
/**
*
* This class provides some useful methods for reading binary data from a stream
* or converting objects to a byte array for transmission.
*
*/
public final class RasUtils implements RasCommDefs
{
static final String rcsid = "@(#)Package rasj.clientcommhttp, class RasUtils: $Header: /home/rasdev/CVS-repository/rasdaman/java/rasj/clientcommhttp/RasUtils.java,v 1.5 2003/12/10 21:04:26 rasdev Exp $";
public RasUtils()
{
}
/**
* This method is used for turning up to 4 unsigned bytes into signed integers.
*
* @param uBytes one to four Bytes which are interpreted as an unsigned Integer
* @param endianess determines the order of the bytes: 0 = bigendian, 1 = little endian
*/
public static int ubytesToInt( byte[] uBytes, byte endianess )
{
int tmpi;
byte tmpb;
int retval = 0;
for( int i = 0; i < uBytes.length; i++ )
{
if( endianess == BIG_ENDIAN )
tmpb = uBytes[uBytes.length-i-1];
else
tmpb = uBytes[i];
tmpi = 0;
/* Byte < 0 */
if( (int)tmpb < 0 )
tmpi = 256 + tmpb;
else
tmpi = tmpb;
tmpi <<= (i*8);
retval += tmpi;
}
return retval;
}
/**
* Reads characters from a stream until a '\0' character is reached.
*
* @param in BufferedInputStream to be read from ( must have been initialized before! )
*/
public static String readString( InputStream in )
throws IOException
{
byte b = (byte) '\0';
byte[] b1 = new byte[1];
String retval = "";
while(in.read(b1) == 0);
while(b1[0] != b)
{
retval =retval + (char)b1[0];
while(in.read(b1) == 0);
}
return retval;
}
}
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