Re: [boost] [filesystem] Checking if a file exists within a sepcificdirectory tree

From: Michael Marcin (mmarcin_at_[hidden])
Date: 2007-06-11 21:46:59

> Suppose the following directory:
>
> C:\export
>
> As a command line argument in one of my applications, I get an absolute 
> path to a file. I want to check if this file exists at some nested level 
> inside of C:\export. Suppose the file passed in is:
>
> C:\export\blah\myfile.txt
>
> I would like to be able to call some sort of function that returns 'true' 
> if the file (myfile.txt) exists within the directory tree rooted at 
> C:\export.
>
> Now suppose this next file:
>
> C:\work\anotherfile.txt
>
> The function in question would return 'false' here since anotherfile.txt 
> does not exist inside of c:\export.
>
> Something like the following would work for me.
>
> is_file_within_directory_tree( "C:\export", "C:\work\anotherfile.txt" ); 
> // returns false
> is_file_within_directory_tree( "C:\export", "C:\export\blah\myfile.txt" ); 
> // returns true
>
> Is there an easy way to do this with Boost.Filesystem?
>

Ooops, meant to post this to the users list. Since it's here already I won't 
cross post it there.

Sorry,

Michael Marcin