/*
* JBoss, Home of Professional Open Source
* Copyright 2005, JBoss Inc., and individual contributors as indicated
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This 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 software 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 software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jbpm.util;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import org.jbpm.PvmException;
public abstract class IoUtil {
public static final int BUFFERSIZE = 4096;
public static byte[] readBytes(InputStream inputStream) {
byte[] bytes = null;
if (inputStream==null) {
throw new PvmException("inputStream is null");
}
try {
ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
transfer(inputStream, outputStream);
bytes = outputStream.toByteArray();
outputStream.close();
return bytes;
} catch (IOException e) {
throw new PvmException("couldn't read bytes from inputStream", e);
}
}
public static int transfer(InputStream in, OutputStream out) {
int total = 0;
byte[] buffer = new byte[BUFFERSIZE];
try {
int bytesRead = in.read( buffer );
while ( bytesRead != -1 ) {
out.write( buffer, 0, bytesRead );
total += bytesRead;
bytesRead = in.read( buffer );
}
return total;
} catch (IOException e) {
throw new PvmException("couldn't write bytes to output stream", e);
}
}
}