001/*
002  GRANITE DATA SERVICES
003  Copyright (C) 2011 GRANITE DATA SERVICES S.A.S.
004
005  This file is part of Granite Data Services.
006
007  Granite Data Services is free software; you can redistribute it and/or modify
008  it under the terms of the GNU Library General Public License as published by
009  the Free Software Foundation; either version 2 of the License, or (at your
010  option) any later version.
011
012  Granite Data Services is distributed in the hope that it will be useful, but
013  WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
014  FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License
015  for more details.
016
017  You should have received a copy of the GNU Library General Public License
018  along with this library; if not, see <http://www.gnu.org/licenses/>.
019*/
020
021package org.granite.util;
022
023import java.io.ByteArrayInputStream;
024import java.io.ByteArrayOutputStream;
025import java.io.FileNotFoundException;
026import java.io.IOException;
027import java.io.InputStream;
028
029/**
030 * @author Franck WOLFF
031 */
032public class StreamUtil {
033
034        public static byte[] getResourceAsBytes(String path, ClassLoader loader) throws IOException {
035                if (loader == null)
036                        loader = Thread.currentThread().getContextClassLoader();
037        InputStream is = loader.getResourceAsStream(path);
038        if (is == null)
039            throw new FileNotFoundException("Resource not found: " + path);
040
041        ByteArrayOutputStream baos = new ByteArrayOutputStream(512);
042        try {
043            int b = -1;
044            while ((b = is.read()) != -1)
045                baos.write(b);
046        } finally {
047            is.close();
048        }
049        return baos.toByteArray();
050    }
051        
052    public static ByteArrayInputStream getResourceAsStream(String path, ClassLoader loader) throws IOException {
053        return new ByteArrayInputStream(getResourceAsBytes(path, loader));
054    }
055
056    public static String getResourceAsString(String path, ClassLoader loader) throws IOException {
057        return new String(getResourceAsBytes(path, loader));
058    }
059
060    public static String getStreamAsString(InputStream is) throws IOException {
061        if (is == null)
062            return null;
063
064        ByteArrayOutputStream baos = new ByteArrayOutputStream(512);
065        try {
066            int b = -1;
067            while ((b = is.read()) != -1)
068                baos.write(b);
069        } finally {
070            is.close();
071        }
072        return new String(baos.toByteArray());
073    }
074}