[Boost-users] Question about ifstream ranges

From: Pfligersdorffer, Christian (Christian.Pfligersdorffer_at_[hidden])
Date: 2007-03-07 08:29:11

Hello all!

I face the problem of partitioning a file that i read with ifstream into portions that are to be processed by some clients. I want to ensure that a client only views a specific part (window, range) of the stream. So far I store 2 streamoffsets posStart and posEnd, call seekg on the stream, pass it to the client by ref and rely on the client to check when it reached posEnd.

However, I certainly cannot copy the whole range into a new stream object and pass that one. Efficiency does matter.

Any suggestions? Maybe some iterator-magic can be done?

Thanks in advance,

--
Christian Pfligersdorffer
Dipl.-Ing. Bakk.rer.nat.
Software Engineering
EOS GmbH - Electro Optical Systems
Robert-Stirling-Ring 1
D-82152 Krailling / Munich
Phone [phone]
Fax [phone]
 
christian.pfligersdorffer_at_[hidden]
http://www.eos.info