001/**
002 *
003 * Copyright (c) 2014, the Railo Company Ltd. All rights reserved.
004 *
005 * This library is free software; you can redistribute it and/or
006 * modify it under the terms of the GNU Lesser General Public
007 * License as published by the Free Software Foundation; either 
008 * version 2.1 of the License, or (at your option) any later version.
009 * 
010 * This library is distributed in the hope that it will be useful,
011 * but WITHOUT ANY WARRANTY; without even the implied warranty of
012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
013 * Lesser General Public License for more details.
014 * 
015 * You should have received a copy of the GNU Lesser General Public 
016 * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
017 * 
018 **/
019package lucee.commons.activation;
020
021// Imports
022import java.io.IOException;
023import java.io.InputStream;
024import java.io.OutputStream;
025
026import javax.activation.DataSource;
027
028import lucee.commons.io.IOUtil;
029import lucee.commons.io.res.Resource;
030
031/**
032 * File Data Source.
033 */
034public final class ResourceDataSource implements DataSource {
035
036        /**
037         * File source.
038         */
039        private final Resource _file;
040
041        /**
042         * Constructor of the class
043         * @param res source
044         */
045        public ResourceDataSource(Resource res) {
046                _file = res;
047        }
048
049        /**
050         * Get name.
051         * @returns Name
052         */
053        public String getName() {
054                return _file.getName();
055        } 
056
057        /**
058         * Get Resource.
059         * @returns Resource
060         */
061        public Resource getResource() {
062                return _file;
063        }
064
065        /**
066         * Get input stream.
067         * @returns Input stream
068         * @throws IOException IO exception occurred
069         */
070        public InputStream getInputStream() throws IOException {
071                return IOUtil.toBufferedInputStream(_file.getInputStream());
072        } 
073
074        /**
075         * Get content type.
076         * @returns Content type
077         */
078        public String getContentType() {
079                InputStream is=null;
080                try {
081                        return IOUtil.getMimeType(is=_file.getInputStream(), "application/unknow");
082                } catch (IOException e) {
083                        return "application/unknow";
084                }
085                finally {
086                        IOUtil.closeEL(is);
087                }
088                
089        }
090
091        /**
092         * Get output stream.
093         * @returns Output stream
094         * @throws IOException IO exception occurred
095         */
096        public OutputStream getOutputStream() throws IOException {
097                if (!_file.isWriteable()) {
098                        throw new IOException("Cannot write");
099                }
100                return IOUtil.toBufferedOutputStream(_file.getOutputStream());
101        }
102}