Re: [boost] Re: Oughtn't filesystem::path acc ept the "*" and "?" wildcards?

From: Beman Dawes (bdawes_at_[hidden])
Date: 2003-04-20 15:22:46

At 02:17 PM 4/20/2003, Edward Diener wrote:
 >Beman Dawes wrote:
 >> At 08:22 AM 4/9/2003, Christian Engström wrote:
 >>
 >>  >In my application I need to handle paths that contain wildcards,
 >>  such as >for example "foo/chapter?.txt" or "bar/*/index.html".
 >>
 >> I think that your need is both valid and commonplace, but that the
 >> way to handle it isn't necessarily to modify the filesystem library.
 >>
 >> Rather, think about using a filter iterator. See
 >> www.boost.org/libs/utility/filter_iterator.htm
 >>
 >> There are a couple of caveats: (1) I haven't actually tried it, so
 >> don't
 >> know if it is a practical solution, and (2) Dave, Jeremy, and Thomas
 >> are working on a major update to iterator adaptors so details may
 >> change once they are done.
 >
 >What good is a filter iterator adaptor supposed to accomplish in this
 >situation ?

The idea is that rather than directory iteration returning iterators for 
all path entries, it would only return those which passed a predicate which 
was driven by the pattern. For some uses, the pattern might more flexibly 
be a regular expression rather than the traditional (but non-portable) 
wildcard patterns provided by various operating systems.

--Beman