com.liferay.portal.kernel.util.MimeTypesUtil.java Source code

Introduction

Here is the source code for com.liferay.portal.kernel.util.MimeTypesUtil.java

Source

/**
 * Copyright (c) 2000-present Liferay, Inc. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation; either version 2.1 of the License, or (at your option)
 * any later version.
 *
 * This library is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
 * details.
 */

package com.liferay.portal.kernel.util;

import java.io.File;
import java.io.InputStream;

import java.util.Set;

/**
 * @author Jorge Ferrer
 * @author Brian Wing Shun Chan
 * @author Alexander Chow
 */
public class MimeTypesUtil {

    /**
     * Returns the content type from the file.
     *
     * @param  file the file of the content
     * @return the content type if it is a supported format or
     *         "application/octet-stream" if it is an unsupported format
     */
    public static String getContentType(File file) {
        return getMimeTypes().getContentType(file);
    }

    /**
     * Returns the content type from the file and file name.
     *
     * @param  file the file of the content (optionally <code>null</code>)
     * @param  fileName the full name or extension of the file (e.g.,
     *         "Test.doc", ".doc")
     * @return the content type if it is a supported format or
     *         "application/octet-stream" if it is an unsupported format
     */
    public static String getContentType(File file, String fileName) {
        return getMimeTypes().getContentType(file, fileName);
    }

    /**
     * Returns the content type from the input stream and file name.
     *
     * <p>
     * The input stream is not reset upon return of this method. This needs to
     * be handled by the caller if the input stream is to be reused.
     * Alternatively, use the method {@link #getContentType(File, String)}.
     * </p>
     *
     * @param  inputStream the input stream of the content (optionally
     *         <code>null</code>)
     * @param  fileName the full name or extension of the file (e.g.,
     *         "Test.doc", ".doc")
     * @return the content type if it is a supported format or
     *         "application/octet-stream" if it is an unsupported format
     */
    public static String getContentType(InputStream inputStream, String fileName) {

        return getMimeTypes().getContentType(inputStream, fileName);
    }

    /**
     * Returns the content type from the file name.
     *
     * @param  fileName the full name or extension of the file (e.g.,
     *         "Test.doc", ".doc")
     * @return the content type if it is a supported format or
     *         "application/octet-stream" if it is an unsupported format
     */
    public static String getContentType(String fileName) {
        return getMimeTypes().getContentType(fileName);
    }

    /**
     * Returns the content type from the file extension.
     *
     * @param  extension the extension of the file (e.g., "doc")
     * @return the content type if it is a supported format or
     *         "application/octet-stream" if it is an unsupported format
     */
    public static String getExtensionContentType(String extension) {
        return getMimeTypes().getExtensionContentType(extension);
    }

    /**
     * Returns the possible file extensions for the content type.
     *
     * @param  contentType the content type of the file (e.g., "image/jpeg")
     * @return the set of extensions if it is a known content type or an empty
     *         set if it is an unknown content type
     */
    public static Set<String> getExtensions(String contentType) {
        return getMimeTypes().getExtensions(contentType);
    }

    public static MimeTypes getMimeTypes() {
        return _mimeTypes;
    }

    public static boolean isWebImage(String mimeType) {
        return getMimeTypes().isWebImage(mimeType);
    }

    public void setMimeTypes(MimeTypes mimeTypes) {
        _mimeTypes = mimeTypes;
    }

    private static MimeTypes _mimeTypes;

}