RE: [boost] Re: arguments parsing, wildcard matcher

From: Henrik Ravn (henrik_at_[hidden])
Date: 2001-11-19 18:25:34

> > struct file_finder
> > {
> > 	file_finder(const char* pattern);
> > 	~file_finder();
> > 	typedef const char* const* iterator;
> > 	operator bool() const;
> > 	iterator begin();
> > 	iterator end();
> > private:
> > 	glob_t glob_;
> > };
> > 
> 
> It doesn't allow access to file info (size, date/time etc) because 
> glob doesn't do this, and you get this easily enough once you have a 
> filename.  I think something like this needs to be integrated with 
> the directory iterator stuff already in boost.
> 
> Btw the reason for operator bool is to allow:
> 
> if (file_finder finder("*.dat"))
> {
>      file_finder::iterator i = finder.begin(); 
>      do
>          process_file(*i);
>      while (++i != finder.end();
> }
> else
>     throw no_files_found; 

This could be done without operator bool, by including bool empty()
const and then go:

file_finder finder("*.dat");
if (finder.empty())
        throw no_files_found;
for (file_finder::iterator i = finder.begin(); i != finder.end() ++i)
        process_file(*i);

which I think I like better.

Henrik

> 
> Dylan
> 
> 
> 
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