001    /**
002     * Copyright (c) 2000-2013 Liferay, Inc. All rights reserved.
003     *
004     * This library is free software; you can redistribute it and/or modify it under
005     * the terms of the GNU Lesser General Public License as published by the Free
006     * Software Foundation; either version 2.1 of the License, or (at your option)
007     * any later version.
008     *
009     * This library is distributed in the hope that it will be useful, but WITHOUT
010     * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
011     * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
012     * details.
013     */
014    
015    package com.liferay.portal.kernel.util;
016    
017    import com.liferay.portal.kernel.security.pacl.permission.PortalRuntimePermission;
018    
019    import java.io.File;
020    import java.io.InputStream;
021    
022    import java.util.Set;
023    
024    /**
025     * @author Jorge Ferrer
026     * @author Brian Wing Shun Chan
027     * @author Alexander Chow
028     */
029    public class MimeTypesUtil {
030    
031            public static String getContentType(File file) {
032                    return getMimeTypes().getContentType(file);
033            }
034    
035            public static String getContentType(File file, String fileName) {
036                    return getMimeTypes().getContentType(file, fileName);
037            }
038    
039            /**
040             * Determine the content type from an input stream and file name.
041             *
042             * @param  fileName full name or extension of file (e.g., "Test.doc",
043             *         ".doc")
044             * @return content type if it is a supported format or an empty string if it
045             *         is an unsupported format
046             */
047            public static String getContentType(
048                    InputStream inputStream, String fileName) {
049    
050                    return getMimeTypes().getContentType(inputStream, fileName);
051            }
052    
053            /**
054             * Determine the content type from a file name.
055             *
056             * @param  fileName full name or extension of file (e.g., "Test.doc",
057             *         ".doc")
058             * @return content type if it is a supported format or an empty string if it
059             *         is an unsupported format
060             */
061            public static String getContentType(String fileName) {
062                    return getMimeTypes().getContentType(fileName);
063            }
064    
065            /**
066             * Determine the possible file extensions for a given content type.
067             *
068             * @param  contentType content type of file (e.g., "image/jpeg")
069             * @return set of extensions if it is a known content type or an empty set
070             *         if it is an unknown content type
071             */
072            public static Set<String> getExtensions(String contentType) {
073                    return getMimeTypes().getExtensions(contentType);
074            }
075    
076            public static MimeTypes getMimeTypes() {
077                    PortalRuntimePermission.checkGetBeanProperty(MimeTypesUtil.class);
078    
079                    return _mimeTypes;
080            }
081    
082            public void setMimeTypes(MimeTypes mimeTypes) {
083                    PortalRuntimePermission.checkSetBeanProperty(getClass());
084    
085                    _mimeTypes = mimeTypes;
086            }
087    
088            private static MimeTypes _mimeTypes;
089    
090    }