Recreating Perl Unpack function in VB

Forums

My Profile

Inbox

Address Book

My Subscription

My Forums

Recreating Perl Unpack function in VB

Logged in as: Guest

arrSession:exec spGetSession 2,4,64820

	Active Users: There are 0 members and 0 guests.
	Users viewing this topic: none

Printable Version

All Forums >> [Scripting] >> ASP.NET >> Recreating Perl Unpack function in VB
Do you like VisualBasicScript.com? Link to us and help spread the word about our forum. Thanks!

Page: [1]

Message

<< Older Topic Newer Topic >>

Recreating Perl Unpack function in VB - 10/6/2008 1:53:01 AM

djjohnnyg

Posts: 1
Score: 0
Joined: 10/6/2008
Status: offline

Hi,

I am trying to recreate a perl script in VB but have a problem creating a checksum value that a target system needs.

In Perl this checksum is calculated using the unpack function:

while (<PACKAGE>) {
$checksum += unpack("%32C*", $_);
   }
   $checksum %= 32767;
   close(PACKAGE);
}

where PACKAGE is the .tar file input stream

I need to replicate this in VB but can't find a means of replicating that unpack function.

All help appreciated!

(I know there are much better checksum calculations available but can't change target system so can't change calculation)

Post #: 1

RE: Recreating Perl Unpack function in VB - 10/17/2008 1:16:21 AM

TNO

Posts: 1284
Score: 12
Joined: 12/18/2004
From: thenewobjective.com
Status: offline

I've seen that you've posted this question across a significant number of forums without a good reply, (that I've seen yet). A couple years ago I think we tackled a similar problem as this:

http://www.visualbasicscript.com/m_40662/mpage_1/key_big%2cendian/tm.htm

It's not .NET, but maybe the logic we came up with would help

_____________________________

To iterate is human, to recurse divine. -- L. Peter Deutsch

(in reply to djjohnnyg)

Post #: 2

If you found our site useful please link to us <a href="http://www.visualbasicscript.com">VisualBasicScript.com</a>.

All Forums >> [Scripting] >> ASP.NET >> Recreating Perl Unpack function in VB

Page: [1]

Jump to:

New Messages	No New Messages
Hot Topic w/ New Messages	Hot Topic w/o New Messages
Locked w/ New Messages	Locked w/o New Messages

Post New Thread

Reply to Message

Post New Poll

Submit Vote

Delete My Own Post

Delete My Own Thread

Rate Posts