Danny Milosavljevic wrote 8 years ago
(address . guix-patches@gnu.org)(name . Danny Milosavljevic)(address . dannym@scratchpost.org)
20170703185520.4475-1-dannym@scratchpost.org
* guix/ui.scm (spinner-port): New variable. Export it.
---
guix/ui.scm | 23 ++++++++++++++++++++++-
1 file changed, 22 insertions(+), 1 deletion(-)
Toggle diff (41 lines)
diff --git a/guix/ui.scm b/guix/ui.scm
index 4bad00e8c..0930ed2b7 100644
--- a/guix/ui.scm
+++ b/guix/ui.scm
@@ -102,7 +102,8 @@
guix-warning-port
warning
info
- guix-main))
+ guix-main
+ spinner-port))
;;; Commentary:
;;;
@@ -110,6 +111,26 @@
;;;
;;; Code:
+(define spinner-port
+ (let ((index 0)
+ (spinner-chars "|\\-/"))
+ (define previous-output-port (current-error-port))
+ (define (spin)
+ (set! index (+ index 1))
+ (if (>= index (string-length spinner-chars))
+ (set! index 0))
+ (display (array-ref spinner-chars index) previous-output-port)
+ (display #\backspace previous-output-port)
+ (force-output previous-output-port))
+ (make-soft-port
+ (vector
+ (lambda (c) (if (char=? c #\newline) (spin))) ; putc
+ (lambda (s) (if (string-contains s "\n") (spin))) ; puts
+ (lambda () #t) ; flusher
+ (lambda () #f) ; getc
+ (lambda () #t)) ; close
+ "w")))
+
(define %gettext-domain
;; Text domain for strings used in the tools.
"guix")