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status: Spin only on TTYs.

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* guix/status.scm (isatty?*): New procedure.
(spin!): Do nothing when port matches ISATTY?*.
(color-output?): Use ISATTY?*.
This commit is contained in:
Ludovic Courtès 2019-01-15 11:47:25 +01:00
parent 35225dc579
commit 0c1bc5ecbe
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1 changed files with 13 additions and 7 deletions
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20
guix/status.scm
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@ -27,6 +27,7 @@ (define-module (guix status)
#:select (nar-uri-abbreviation))
#:use-module (guix store)
#:use-module (guix derivations)
#:use-module (guix memoization)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-9)
#:use-module (srfi srfi-19)
@ -229,22 +230,27 @@ (define (multiplexed-output-supported?)
(and (current-store-protocol-version)
(>= (current-store-protocol-version) #x163)))
(define isatty?*
(mlambdaq (port)
(isatty? port)))
(define spin!
(let ((steps (circular-list "\\" "|" "/" "-")))
(lambda (port)
"Display a spinner on PORT."
(match steps
((first . rest)
(set! steps rest)
(display "\r\x1b[K" port)
(display first port)
(force-output port))))))
(when (isatty?* port)
(match steps
((first . rest)
(set! steps rest)
(display "\r\x1b[K" port)
(display first port)
(force-output port)))))))
(define (color-output? port)
"Return true if we should write colored output to PORT."
(and (not (getenv "INSIDE_EMACS"))
(not (getenv "NO_COLOR"))
(isatty? port)))
(isatty?* port)))
(define-syntax color-rules
(syntax-rules ()