/*
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* JBoss, Home of Professional Open Source
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* Copyright 2005, JBoss Inc., and individual contributors as indicated
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* by the @authors tag. See the copyright.txt in the distribution for a
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* full listing of individual contributors.
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*
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* This is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as
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* published by the Free Software Foundation; either version 2.1 of
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* the License, or (at your option) any later version.
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*
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* This software is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this software; if not, write to the Free
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* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
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* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
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*/
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package org.jbpm.pvm.internal.util;
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import java.io.ByteArrayOutputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.OutputStream;
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import org.jbpm.api.JbpmException;
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public abstract class IoUtil {
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public static final int BUFFERSIZE = 4096;
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public static byte[] readBytes(InputStream inputStream) {
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byte[] bytes = null;
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if (inputStream==null) {
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throw new JbpmException("inputStream is null");
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}
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try {
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ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
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transfer(inputStream, outputStream);
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bytes = outputStream.toByteArray();
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outputStream.close();
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return bytes;
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} catch (IOException e) {
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throw new JbpmException("couldn't read bytes from inputStream", e);
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}
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}
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public static int transfer(InputStream in, OutputStream out) {
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int total = 0;
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byte[] buffer = new byte[BUFFERSIZE];
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try {
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int bytesRead = in.read( buffer );
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while ( bytesRead != -1 ) {
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out.write( buffer, 0, bytesRead );
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total += bytesRead;
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bytesRead = in.read( buffer );
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}
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return total;
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} catch (IOException e) {
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throw new JbpmException("couldn't write bytes to output stream", e);
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}
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}
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}
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