In the course of my work I had occasion to make a small family of iterator adaptors for escaping/unescaping ascii text, and things like that. I made the constuction interface so it could use another iterator adaptor as a "source" thereby permiting me to compose iterators in any sequence (sort of like unix pipes). If there is any interest I will post this.
Subsequently, I had the need to output unicode as UTF-8 which is char based rather than wchar_t based. I used the code in the vault by Ron Garcia. This implemented code_cvt facet to do the transformation. It was irksome to me that that the interface for code_cvt facet was not mapable to my iterator adaptor set - or is it. Now that I have invest the effort to understand stream/streambuf/facet/local/char vs wchar_t/ charsets/etc. I wonder if one can't make a code_cvt facet that would be constructed with an arbitray iterator adaptor. That's what I'm getting at. If that's not clear - I'm not surprised. I had to invest a lot more effort in the steam/streambuf stuff than I had orginally anticipated. Robert Ramey >Larry Evans <[EMAIL PROTECTED]> wrote: >Jonathan D. Turkanis wrote: >> Thanks for your interest. I have posted the library at >> http://groups.yahoo.com/group/boost/files/streambuf_lib/. >> [snip] >>>out of streambuf and a streambuf built that can use any "adaptable >> >> This is good idea! I had thought about composing streambufs to create new >> streambufs, and indeed this seems fairly straightforward using my approach >> (perhaps the most difficult part is selecting suitable names for the >> composition operations -- how about 'operator+' ?) >> >I hadn't thought of the "adaptable sequence" idea, but the "composition >of streambufs" idea sounds similar to the marg_ostreambuf in >files/col_io. The marg_ostreambuf::CTOR takes a streambuf and its >member functions forward to that after doing some processing via the >marg_buffer_put superclass. Maybe marg_buffer_put is a "sort-of" >"adaptable sequence". Anyway, it might give you some ideas. _______________________________________________ Unsubscribe & other changes: http://lists.boost.org/mailman/listinfo.cgi/boost
