Re: [Boost-users] [iostreams] How to make a seekable device seek

Subject: Re: [Boost-users] [iostreams] How to make a seekable device seek
From: Daniel Eiband (eiband_at_[hidden])
Date: 2010-04-30 14:53:59

Hi, what happens when you try to seek to another position than 0:

buf.seekg(100);

I remember seeing code (and a resolved bug too) that optimizes no-seeks. 
Your position was probably 0 before the call.

Kind regards,

Daniel

Am 30.04.2010 01:10, schrieb Bo Jensen:
> I have a seekable iostream device with the tag set to :
>
>       typedef boost::iostreams::input_seekable catagory;
>
> If I have not defined the functions get and seek, it will not compile,
> which is expected, so far so good.
> But when I called it like this :
>
>            mydevice test("somefile.txt");
>
>            boost::iostreams::stream<mydevice>  buf(test);
>
>            buf.seekg(0);
>
> it never enters my seek function, which I would expect. I am sure the
> solution must be obvious. Any pointers here ?
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