Re: [boost] [filesystem] Major changes before standardization

From: Cory Nelson (phrosty_at_[hidden])
Date: 2005-02-13 05:10:17

Well?  It's been a few months, has there been any progress?  I know a
good deal of people excited to use wpath :)

On Thu, 11 Nov 2004 12:20:23 -0500, Beman Dawes <bdawes_at_[hidden]> wrote:
> I'm currently working on a major revision of the Boost filesystem library
> aimed at getting it ready to be proposed to the C++ committee for the next
> Library TR.
> 
> The critical technical change required is internationalization. The plan is
> to provide a templated basic_path class, with typedefs for path and wpath.
> In other words, an approach very similar to the current std::basic_string,
> std::string, and std::wstring.
> 
> Doing this adds a certain amount of complexity compared to the current path
> class. For example, a path_traits class has to be introduced to give
> basic_paths on user defined types a way to import the conversions,
> delimiters, and other traits.
> 
> To offset the added complexity, I'd like to reduce some of the complexities
> in the current design:
> 
> * Eliminate the distinction between native and generic grammars; either
> would be permitted in all contexts. As well as simplifying the class
> interface a bit, this will also eliminate a source of user confusion.
> 
> * Move the name error checking from the basic_path class into stand alone
> functions. Although the current error checking could be further improved by
> Peter Dimov's suggested change allowing failure to be treated as either a
> warning or a hard error, moving it out of the class simplifies the
> interface, allows full path (rather than name-by-name) error checks, and
> eases internationalization.
> 
> The primary downside of these changes will be that users who want path
> portability checks will have to code calls to checking functions that are
> currently being called automatically.
> 
> The internationalization of the library is a big enough change that we will
> probably want to have at least a mini-review once the changes are complete.
> 
> Comments?
> 
> --Beman
> 
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-- 
Cory Nelson
http://www.int64.org