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ftp-client: `ftp-chdir' changes one step at a time.

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* guix/ftp-client.scm (%char-set:not-slash): New variable.
  (ftp-chdir): Add docstring.  Change to DIR one step at a time.
  (ftp-retr): Fix indentation.
This commit is contained in:
Ludovic Courtès 2013-04-27 16:25:54 +02:00
parent accf7a373e
commit 87dfd45594
1 changed files with 24 additions and 11 deletions
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13
guix/ftp-client.scm
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@ -130,9 +130,22 @@ or a TCP port number), and return it."
(define (ftp-close conn) (define (ftp-close conn)
(close (ftp-connection-socket conn))) (close (ftp-connection-socket conn)))
(define %char-set:not-slash
(char-set-complement (char-set #\/)))
(define (ftp-chdir conn dir) (define (ftp-chdir conn dir)
"Change to directory DIR."
;; On ftp.gnupg.org, "PASV" right after "CWD /gcrypt/gnupg" hangs. Doing
;; CWD in two steps works, so just do this.
(let ((components (string-tokenize dir %char-set:not-slash)))
(fold (lambda (dir result)
(%ftp-command (string-append "CWD " dir) 250 (%ftp-command (string-append "CWD " dir) 250
(ftp-connection-socket conn))) (ftp-connection-socket conn)))
#f
(if (string-prefix? "/" dir)
(cons "/" components)
components))))
(define (ftp-size conn file) (define (ftp-size conn file)
"Return the size in bytes of FILE." "Return the size in bytes of FILE."