Package fr.gouv.vitam.storage.offers.tape.cas

Class TarHelper

java.lang.Object

fr.gouv.vitam.storage.offers.tape.cas.TarHelper

public final class TarHelper
extends Object

Constructor Summary

Constructors

Constructor	Description
TarHelper()

Method Summary

Modifier and Type	Method	Description
static InputStream	readEntryAtPos(FileInputStream fileInputStream, TarEntryDescription entryDescription)	Gets an input stream for a specific tar entry.

Methods inherited from class java.lang.Object

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

Constructor Details

TarHelper

public TarHelper()

Method Details

readEntryAtPos

public static InputStream readEntryAtPos(FileInputStream fileInputStream,
 TarEntryDescription entryDescription)
                                  throws IOException

Gets an input stream for a specific tar entry. Entry size & entry name & digest are validated to ensure data coherence.

Parameters:

fileInputStream - file input stream of the tar file to read from. It is NOT closed by this method and must closed by caller.

entryDescription - the tar entry description (file position, size, digest...)

Returns:

Tar entry input stream. Closing this input streams does NOT close inner fileInputStream.

Throws:

IOException - if any IO error occurs