Re: [Boost-users] boost filesystems and case issues

From: dizzy (dizzy_at_[hidden])
Date: 2008-06-10 10:38:33

On Tuesday 10 June 2008 15:56:05 brad_at_[hidden] wrote:
> I've looked through the documentation and Googled, but I cannot find any
> info on
> the topic. If I want to find a file named 'System.dll', but on some
> systems the file is named 'system.DLL' or 'SYSTEM.DLL', etc. If I
> could could do something like this:
>
>    if (boost::filesystem::is_regular(itr->path()))
>      {
>      std::cout << itr->path().lower() << std::endl;
>      }
>
> Notice the .lower() In this way, each path would be lowercase and I
> could search for only 'system.dll' and .lower() would find any occurrence
> of that filename, no matter the case.
>
> I wonder how others do this today? Do you use transform or tolower from
> another library?

I don't understand the question, can't you use std::tolower (from <cctype>) ?

To compare strings in case insensitive ways using a common case is an 
acceptable solution. This is a problem when using locales for which this 
cunversion is not bidirectional (I understand in Greek there are 2 different 
lower case characters that uppercase is the same character thus using the 
std::tolower aproach you would get false negatives in some situations).

-- 
Mihai RUSU					Email: dizzy_at_[hidden]
			"Linux is obsolete" -- AST