"Larry Evans" <[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED]
> I had a brief look and it looks promising. However, I'm wondering > if some of the complexity can be avoided. I had a hard time figuring > out just how to get marg_ostreambuf in files/col_io/col_io.zip to work > with buffered input. After thinking some more, I thought about just > using overflow and sputc to "pipe" the output to the next streambuf. > This greatly simplified the code. Would something similar work with > your code. In particular, can you create an equivalent to marg_ostream > from files/col_io/col_io.zip by using your, I guess, stream buffer > redirectors? I'd like to see that. Maybe Reece Dunn would also since > he's "interested in indentation facilities." I've examined col_io. At a high point of view it is the decorator pattern - you extend basic_ostream<> interface with identation capabilities. The code I posted, particulary input/output_buffer classes, is the adapter pattern - it adds basic_streambuf<> interface to a sequence. So, this patterns have different purposes. If I get you right you want to see how one can add identation capabilites to a buffer using the adapters. Well, it could be done but it would be somewhat onerous. One would have to wrap an existing buffer with a developed sequence model class that will transform the input and put it in the wrapped buffer. And then wrap the sequence model with the output_buffer class. I think it is not worth an effort. _______________________________________________ Unsubscribe & other changes: http://lists.boost.org/mailman/listinfo.cgi/boost
