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-rw-r--r--guix/ftp-client.scm9
1 files changed, 8 insertions, 1 deletions
diff --git a/guix/ftp-client.scm b/guix/ftp-client.scm
index 7e241f37b2..e3bacc3720 100644
--- a/guix/ftp-client.scm
+++ b/guix/ftp-client.scm
@@ -1,5 +1,5 @@
;;; GNU Guix --- Functional package management for GNU
-;;; Copyright © 2010, 2011, 2012 Ludovic Courtès <ludo@gnu.org>
+;;; Copyright © 2010, 2011, 2012, 2013 Ludovic Courtès <ludo@gnu.org>
;;;
;;; This file is part of GNU Guix.
;;;
@@ -33,6 +33,7 @@
ftp-open
ftp-close
ftp-chdir
+ ftp-size
ftp-list
ftp-retr))
@@ -133,6 +134,12 @@ or a TCP port number), and return it."
(%ftp-command (string-append "CWD " dir) 250
(ftp-connection-socket conn)))
+(define (ftp-size conn file)
+ "Return the size in bytes of FILE."
+ (let ((message (%ftp-command (string-append "SIZE " file) 213
+ (ftp-connection-socket conn))))
+ (string->number (string-trim-both message))))
+
(define (ftp-pasv conn)
(define %pasv-rx
(make-regexp "([0-9]+),([0-9]+),([0-9]+),([0-9]+),([0-9]+),([0-9]+)"))