[racket] filesystem api

This will print out all files and directories, starting from the
current directory.

#lang racket
(for ([d (in-directory)])
  (printf "d: ~s\n" d))


You may also want to check out the directory-exists? and file-exists?
primitives.

hth,
Robby

On Sun, Jun 5, 2011 at 7:19 AM, Nikita B. Zuev <nikitazu at gmail.com> wrote:
> Hello,
>
> I'm writing a program, that needs to walk recursively through a
> filesystem directory structure.
> Looking through documentation I found only `directory-list' function, that can
> list directory content. The problem is, I haven't found any high level
> data structures representing
> filesystem, `directory-list' just returns a list of paths. Having only
> `path' available,
> I guessed the only way to know if `path' represents file or directory,
> is through a call
> to `directory-exists?' (I know that it exists, but it will return #f
> for files). If I understand
> correctly now my `directory-tree-fold' function hits filesystem as
> many times, as I
> have files + (directories * 2): one call to `directory-list' per
> directory and one call to
> `directory-exists?' per every file and folder.
>
> Is there a way to list directory's files and subdirectories separate from each
> other (something like `directory-list-files',
> `directory-list-subdirs'). Or maybe
> there is some way to get a list of structs, representing filesystem objects,
> and having fields like `is-file?' or 'is-directory?'.
>
>
> --
> Regards,
> Nikita B. Zuev
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