Module org.arakhne.afc.core.inputoutput

Package org.arakhne.afc.inputoutput.filetype

Class FileType

java.lang.Object

org.arakhne.afc.inputoutput.filetype.FileType

public final class FileType
extends Object

An utility class that permits to detect the type of a file. This class determines the file type according to the file content (Unix approach) and not according to the filename extension (Windows® approach). A MIME constant is replied for the detected type.

This class implements equivalent functionalities as the file Linux command.

Since:

14.0

Version:

17.0 2020-01-04 14:41:40

Author:

Stéphane GALLAND

Maven Group Id:

org.arakhne.afc.core

Maven Artifact Id:

inputoutput

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	FileType.ContentFileTypeMap	Map that contains the file content type definitions.

Method Summary

Modifier and Type	Method	Description
static void	addContentType(MagicNumber magicNumber)	Register a MIME type of the given file.
static FileType.ContentFileTypeMap	ensureContentTypeManager()	Be sure that the default FileTypeMap is a FileType.ContentFileTypeMap.
static String	getContentType(File filename)	Replies the MIME type of the given file.
static String	getContentType(String filename)	Replies the MIME type of the given file.
static String	getContentType(URL filename)	Replies the MIME type of the given file.
static String	getFormatVersion(File filename)	Replies the version of the format of the given file.
static String	getFormatVersion(String filename)	Replies the version of the format of the given file.
static String	getFormatVersion(URL filename)	Replies the version of the format of the given file.
static boolean	isContentType(File filename, String desiredMimeType)	Replies if the given file is compatible with the given MIME type.
static boolean	isContentType(String filename, String desiredMimeType)	Replies if the given file is compatible with the given MIME type.
static boolean	isContentType(URL filename, String desiredMimeType)	Replies if the given file is compatible with the given MIME type.
static boolean	isImage(String mime)	Replies if the specified MIME type corresponds to an image.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

ensureContentTypeManager

public static FileType.ContentFileTypeMap ensureContentTypeManager()

Be sure that the default FileTypeMap is a FileType.ContentFileTypeMap.

Returns:

the default content type manager.

addContentType

public static void addContentType(MagicNumber magicNumber)

Register a MIME type of the given file.

Parameters:

magicNumber - is the string that identify the type of the content.

getContentType

public static String getContentType(File filename)

Replies the MIME type of the given file.

Parameters:

filename - is the name of the file to test.

Returns:

the MIME type of the given file.

getContentType

public static String getContentType(String filename)

Replies the MIME type of the given file.

Parameters:

filename - is the name of the file to test.

Returns:

the MIME type of the given file.

getContentType

public static String getContentType(URL filename)

Replies the MIME type of the given file.

Parameters:

filename - is the name of the file to test.

Returns:

the MIME type of the given file.

getFormatVersion

public static String getFormatVersion(File filename)

Replies the version of the format of the given file.

Parameters:

filename - is the name of the file to test.

Returns:

the format version for the given file.

getFormatVersion

public static String getFormatVersion(String filename)

Replies the version of the format of the given file.

Parameters:

filename - is the name of the file to test.

Returns:

the format version for the given file.

getFormatVersion

public static String getFormatVersion(URL filename)

Replies the version of the format of the given file.

Parameters:

filename - is the name of the file to test.

Returns:

the format version for the given file.

isImage

public static boolean isImage(String mime)

Replies if the specified MIME type corresponds to an image.

Parameters:

mime - is the MIME type to test.

Returns:

true if the given MIME type is corresponding to an image, otherwise false

isContentType

public static boolean isContentType(File filename,
                                    String desiredMimeType)

Replies if the given file is compatible with the given MIME type.

Parameters:

filename - is the name of the file to test.

desiredMimeType - is the desired MIME type.

Returns:

true if the given file has type equal to the given MIME type, otherwise false.

isContentType

public static boolean isContentType(String filename,
                                    String desiredMimeType)

Replies if the given file is compatible with the given MIME type.

Parameters:

filename - is the name of the file to test.

desiredMimeType - is the desired MIME type.

Returns:

true if the given file has type equal to the given MIME type, otherwise false.

isContentType

public static boolean isContentType(URL filename,
                                    String desiredMimeType)

Replies if the given file is compatible with the given MIME type.

Parameters:

filename - is the name of the file to test.

desiredMimeType - is the desired MIME type.

Returns:

true if the given file has type equal to the given MIME type, otherwise false.