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/*
* Copyright (c) 2012, 2019 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0, which is available at
* http://www.eclipse.org/legal/epl-2.0.
*
* This Source Code may also be made available under the following Secondary
* Licenses when the conditions for such availability set forth in the
* Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
* version 2 with the GNU Classpath Exception, which is available at
* https://www.gnu.org/software/classpath/license.html.
*
* SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
*/
package org.glassfish.jersey.media.multipart.file;
import java.io.File;
import java.util.Locale;
import javax.ws.rs.core.MediaType;
/**
* Default implementation of {@link MediaTypePredictor} that uses
* {@link CommonMediaTypes}.
*
* @author Imran M Yousuf (imran at smartitengineering.com)
* @author Paul Sandoz
* @author Michal Gajdos
*/
public class DefaultMediaTypePredictor implements MediaTypePredictor {
/**
* This enum represents file extension and MIME types of commonly used file. It
* is to be noted that all file extension and MIME types are specified in lower
* case, when checking the extension this should be kept in mind.
* Currently supported file extension and MIME Types are -
*
*
".xml" - application/xml
*
".txt" - text/plain
*
".pdf" - application/pdf
*
".htm" - text/html
*
".html" - text/html
*
".jpg" - image/jpeg
*
".png" - image/png
*
".gif" - image/gif
*
".bmp" - image/bmp
*
".tar" - application/x-tar
*
".zip" - application/zip
*
".gz" - application/x-gzip
*
".rar" - application/x-rar
*
".mp3" - audio/mpeg
*
".wav" - audio/x-wave
*
".avi" - video/x-msvideo
*
".mpeg" - video/mpeg
*
*/
public enum CommonMediaTypes {
XML(".xml", MediaType.APPLICATION_XML_TYPE),
TXT(".txt", MediaType.TEXT_PLAIN_TYPE),
HTM(".htm", MediaType.TEXT_HTML_TYPE),
HTML(".html", MediaType.TEXT_HTML_TYPE),
PDF(".pdf", new MediaType("application", "pdf")),
JPG(".jpg", new MediaType("image", "jpeg")),
PNG(".png", new MediaType("image", "png")),
GIF(".gif", new MediaType("image", "gif")),
BMP(".bmp", new MediaType("image", "pdf")),
TAR(".tar", new MediaType("application", "x-tar")),
ZIP(".zip", new MediaType("application", "zip")),
GZ(".gz", new MediaType("application", "x-gzip")),
RAR(".rar", new MediaType("application", "x-rar")),
MP3(".mp3", new MediaType("audio", "mpeg")),
WAV(".wav", new MediaType("audio", "x-wave")),
AVI(".avi", new MediaType("video", "x-msvideo")),
MPEG(".mpeg", new MediaType("video", "mpeg"));
private final String extension;
private final MediaType mediaType;
private CommonMediaTypes(final String extension, final MediaType mediaType) {
if (extension == null || !extension.startsWith(".") || mediaType == null) {
throw new IllegalArgumentException();
}
this.extension = extension;
this.mediaType = mediaType;
}
/**
* Gets the file extension.
*
* @return the file extension.
*/
public String getExtension() {
return extension;
}
/**
* Gets the media type.
*
* @return the media type.
*/
public MediaType getMediaType() {
return mediaType;
}
/**
* A utility method for predicting media type from a file name.
*
* @param file the file from which to predict the {@link MediaType}
* @return the {@link MediaType} for the give file; {@code null} - if file
* is null; "application/octet-stream" if extension not recognized.
*
* @see CommonMediaTypes#getMediaTypeFromFileName(java.lang.String)
*/
public static MediaType getMediaTypeFromFile(final File file) {
if (file == null) {
return null;
}
String fileName = file.getName();
return getMediaTypeFromFileName(fileName);
}
/**
* A utility method for predicting media type from a file name. If the file
* name extension is not recognised it will return {@link MediaType} for
* "*\/*", it will also return the same if the file is {@code null}.
* Currently supported file extensions can be found at {@link CommonMediaTypes}.
*
* @param fileName the file name from which to predict the {@link MediaType}
* @return the {@link MediaType} for the give file; {@code null} - if file
* is null; "application/octet-stream" if extension not recognized.
*/
public static MediaType getMediaTypeFromFileName(final String fileName) {
if (fileName == null) {
return null;
}
CommonMediaTypes[] types = CommonMediaTypes.values();
if (types != null && types.length > 0) {
for (CommonMediaTypes type : types) {
if (fileName.toLowerCase(Locale.ROOT).endsWith(type.getExtension())) {
return type.getMediaType();
}
}
}
return MediaType.APPLICATION_OCTET_STREAM_TYPE;
}
}
private static final DefaultMediaTypePredictor MEDIA_TYPE_PREDICTOR =
new DefaultMediaTypePredictor();
public MediaType getMediaTypeFromFile(File file) {
return CommonMediaTypes.getMediaTypeFromFile(file);
}
public MediaType getMediaTypeFromFileName(String fileName) {
return CommonMediaTypes.getMediaTypeFromFileName(fileName);
}
/**
* Gets the singleton instance of this class.
*
* @return the singleton instance.
*/
public static DefaultMediaTypePredictor getInstance() {
return MEDIA_TYPE_PREDICTOR;
}
}
