Module org.arakhne.afc.core.inputoutput

Package org.arakhne.afc.inputoutput.filetype

Class JarMagicNumber

java.lang.Object

org.arakhne.afc.inputoutput.filetype.MagicNumber

org.arakhne.afc.inputoutput.filetype.JarMagicNumber

All Implemented Interfaces:

Comparable<MagicNumber>

public class JarMagicNumber
extends MagicNumber

This class defines a set of informations that could distinguish a file content from another one. It is also known as Magic Number on several operating systems.

This magic number supports Jar files (ie Zip file with manifest). For general zipped file, please see ZipMagicNumber. For zip archive of files, please see ZipArchiveMagicNumber.

Since:

14.0

Version:

17.0 2020-01-04 14:41:40

Author:

Stéphane GALLAND

See Also:

ZipMagicNumber, ZipArchiveMagicNumber

Maven Group Id:

org.arakhne.afc.core

Maven Artifact Id:

inputoutput

Constructor Summary

Constructors

Constructor	Description
JarMagicNumber(javax.activation.MimeType mimeType)	Constructor.
JarMagicNumber(javax.activation.MimeType mimeType, String formatVersion)	Constructor.

Method Summary

Modifier and Type	Method	Description
protected boolean	isContentType(MagicNumberStream stream)	Replies if the specified stream contains data that corresponds to this magic number.
boolean	isManifestMatch(InputStream manifestContent)	Invoked to test the content of the Jar file manifest.

Methods inherited from class org.arakhne.afc.inputoutput.filetype.MagicNumber

compareTo, doStreamEncoding, getFormatVersion, getHostMimeTypes, getMimeType, undoStreamEncoding

Methods inherited from class java.lang.Object

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

Constructor Detail

JarMagicNumber

public JarMagicNumber(javax.activation.MimeType mimeType)

Constructor.

Parameters:

mimeType - is the MIME type associated to this magic number.

JarMagicNumber

public JarMagicNumber(javax.activation.MimeType mimeType,
                      String formatVersion)

Constructor.

Parameters:

mimeType - is the MIME type associated to this magic number.

formatVersion - is the version of the supported format.

Method Detail

isContentType

protected final boolean isContentType(MagicNumberStream stream)

Description copied from class: MagicNumber

Replies if the specified stream contains data that corresponds to this magic number.

Specified by:

isContentType in class MagicNumber

Parameters:

stream - is the stream to analyse.

Returns:

true if the stream is containing this magic number, otherwise false

isManifestMatch

public boolean isManifestMatch(InputStream manifestContent)

Invoked to test the content of the Jar file manifest.

Parameters:

manifestContent - is the content of the manifest

Returns:

true if the manifest is matching, otherwise false