001/**
002 *   GRANITE DATA SERVICES
003 *   Copyright (C) 2006-2013 GRANITE DATA SERVICES S.A.S.
004 *
005 *   This file is part of the Granite Data Services Platform.
006 *
007 *   Granite Data Services is free software; you can redistribute it and/or
008 *   modify it under the terms of the GNU Lesser General Public
009 *   License as published by the Free Software Foundation; either
010 *   version 2.1 of the License, or (at your option) any later version.
011 *
012 *   Granite Data Services is distributed in the hope that it will be useful,
013 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
014 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
015 *   General Public License for more details.
016 *
017 *   You should have received a copy of the GNU Lesser General Public
018 *   License along with this library; if not, write to the Free Software
019 *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
020 *   USA, or see <http://www.gnu.org/licenses/>.
021 */
022package org.granite.util;
023
024import java.io.ByteArrayInputStream;
025import java.io.ByteArrayOutputStream;
026import java.io.FileNotFoundException;
027import java.io.IOException;
028import java.io.InputStream;
029
030/**
031 * @author Franck WOLFF
032 */
033public class StreamUtil {
034
035        public static byte[] getResourceAsBytes(String path, ClassLoader loader) throws IOException {
036                if (loader == null)
037                        loader = Thread.currentThread().getContextClassLoader();
038        InputStream is = loader.getResourceAsStream(path);
039        if (is == null)
040            throw new FileNotFoundException("Resource not found: " + path);
041
042        ByteArrayOutputStream baos = new ByteArrayOutputStream(512);
043        try {
044            int b = -1;
045            while ((b = is.read()) != -1)
046                baos.write(b);
047        } finally {
048            is.close();
049        }
050        return baos.toByteArray();
051    }
052        
053    public static ByteArrayInputStream getResourceAsStream(String path, ClassLoader loader) throws IOException {
054        return new ByteArrayInputStream(getResourceAsBytes(path, loader));
055    }
056
057    public static String getResourceAsString(String path, ClassLoader loader) throws IOException {
058        return new String(getResourceAsBytes(path, loader));
059    }
060
061    public static String getStreamAsString(InputStream is) throws IOException {
062        if (is == null)
063            return null;
064
065        ByteArrayOutputStream baos = new ByteArrayOutputStream(512);
066        try {
067            int b = -1;
068            while ((b = is.read()) != -1)
069                baos.write(b);
070        } finally {
071            is.close();
072        }
073        return new String(baos.toByteArray());
074    }
075}