[Boost-users] online change of iostream filter

From: Daniel Oberhoff (daniel_at_[hidden])
Date: 2008-05-08 08:34:20

I was wondering if it is possible to change the filter used to write to 
or read form a file without closing/reopening the file? The usecase is 
reading/writing matlab files, which contain zipped blocks within a 
context of unzipped data. So I would need to be able to switch on 
compression once such a block starts and switch off afterwards, and it 
would be nice not to have to ftell/close/create appropriate stream/open/
fseek every time.

Best

Daniel