OpenEuphoria

RE: Current Directory

• Posted by rforno at tutopia.com Feb 14, 2003
• 457 views

Derek:
I know it's no help, but I had just the same problem when modifying RDS's
Duplicate File Finder to correct a bug and enhance it. I was unable to find
a solution, as it is said in the corresponding source file (:
Regards.
----- Original Message -----
From: Derek Parnell <ddparnell at bigpond.com>
Subject: Re: Current Directory


>
> On Wed, 12 Feb 2003 21:59:44 -0500, Greg Haberek <g.haberek at comcast.net>
> wrote:
>
> >
> > Let's do some pseudo-coding! This tends to help me in my engineering
> > classes....
> >
> > Step 1:  User provides file
> >
> > -- begin test file --
> >
> > -- filename: C:\Euphoria\files.txt --
> > -- please note that the current directory would start at C:\Euphoria --
> >
> > .\test.dat                       -- file 1 (in C:\Euphoria)
> > ..\test1.dat                    -- file 2 (down one path)
> > D:\test2.dat                   -- file 3 (different drive)
> > ..\TestFolder\test3.dat   -- file 4 (this is on drive C:, since
> > C:\Euphoria is the original
> > directory)
> > C:\TestFolder\test3.dat  -- file 5 (same as file 4)
> > D:\FolderName\..\test2.dat -- file 6 (same as file 3)
> >
> > -- note that the current directory this whole time never changes, --
> > -- we figure out the pathes based on the base directory --
> >
> > -- end test file --
> >
> > Step 2: Filter out duplicate names
> >
> > -- begin pseudo-code --
> >
> > function full_path( sequence path )
> > -- return a full path name, taking into account any .. or .
> > end function
> >
> > sequence list_of_files
> >
> > while 1 do
> >
> > -- read a line from the text file
> > -- parse it into a full_path()
> > -- look it up in list_of_files
> >
> > if  found  then
> > -- ignore it, file already listed
> >
> > else
> > -- add it to the list
> >
> > end if
> >
> > end while
> >
> > -- end pseudo-code --
> >
> > Step 3: Begin coding program...
> >
> >
> > I'm pretty sure this is what Derek wants his program to do!
>
> Almost, but not quite. How would the algorithm above handle these two
> specs...
>
>   D:FolderName\..\test2.dat
>
> Notice that there is NO "\" between the ":" and the "FolderName". This is
> the situation that I don't know how to handle.
>
> Then if D:\XYZZY\test2.dat is supplied, how can I know if that is the same
> file as D:\FolderName\..\test2.dat ? It is possibly the same file, but
> maybe not also.
>
> --
>
> cheers,
> Derek Parnell
>
>
>
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