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Add (guix colors).

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* guix/colors.scm: New file.
* Makefile.am (MODULES): Add it.
* guix/ui.scm (color-table, color, colorize-string): Remove.
* guix/status.scm (isatty?*, color-output? color-rules): Remove.
This commit is contained in:
Ludovic Courtès 2019-04-09 22:39:26 +02:00
parent 95207e70d5
commit 5d9f9ad631
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GPG key ID: 090B11993D9AEBB5
4 changed files with 132 additions and 97 deletions
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1
Makefile.am
View file

@ -138,6 +138,7 @@ MODULES = \
guix/store.scm \
guix/cvs-download.scm \
guix/svn-download.scm \
guix/colors.scm \
guix/i18n.scm \
guix/ui.scm \
guix/status.scm \

129
guix/colors.scm Normal file
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@ -0,0 +1,129 @@
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2013, 2014 Free Software Foundation, Inc.
;;; Copyright © 2018 Sahithi Yarlagadda <sahi@swecha.net>
;;; Copyright © 2018 Ricardo Wurmus <rekado@elephly.net>
;;; Copyright © 2017, 2018, 2019 Ludovic Courtès <ludo@gnu.org>
;;;
;;; This file is part of GNU Guix.
;;;
;;; GNU Guix is free software; you can redistribute it and/or modify it
;;; under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 3 of the License, or (at
;;; your option) any later version.
;;;
;;; GNU Guix is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
(define-module (guix colors)
#:use-module (guix memoization)
#:use-module (srfi srfi-1)
#:use-module (ice-9 match)
#:use-module (ice-9 regex)
#:export (colorize-string
color-rules
color-output?
isatty?*))
;;; Commentary:
;;;
;;; This module provides tools to produce colored output using ANSI escapes.
;;;
;;; Code:
(define color-table
`((CLEAR . "0")
(RESET . "0")
(BOLD . "1")
(DARK . "2")
(UNDERLINE . "4")
(UNDERSCORE . "4")
(BLINK . "5")
(REVERSE . "6")
(CONCEALED . "8")
(BLACK . "30")
(RED . "31")
(GREEN . "32")
(YELLOW . "33")
(BLUE . "34")
(MAGENTA . "35")
(CYAN . "36")
(WHITE . "37")
(ON-BLACK . "40")
(ON-RED . "41")
(ON-GREEN . "42")
(ON-YELLOW . "43")
(ON-BLUE . "44")
(ON-MAGENTA . "45")
(ON-CYAN . "46")
(ON-WHITE . "47")))
(define (color . lst)
"Return a string containing the ANSI escape sequence for producing the
requested set of attributes in LST. Unknown attributes are ignored."
(let ((color-list
(remove not
(map (lambda (color) (assq-ref color-table color))
lst))))
(if (null? color-list)
""
(string-append
(string #\esc #\[)
(string-join color-list ";" 'infix)
"m"))))
(define (colorize-string str . color-list)
"Return a copy of STR colorized using ANSI escape sequences according to the
attributes STR. At the end of the returned string, the color attributes will
be reset such that subsequent output will not have any colors in effect."
(string-append
(apply color color-list)
str
(color 'RESET)))
(define isatty?*
(mlambdaq (port)
"Return true if PORT is a tty. Memoize the result."
(isatty? 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)))
(define-syntax color-rules
(syntax-rules ()
"Return a procedure that colorizes the string it is passed according to
the given rules. Each rule has the form:
(REGEXP COLOR1 COLOR2 ...)
where COLOR1 specifies how to colorize the first submatch of REGEXP, and so
on."
((_ (regexp colors ...) rest ...)
(let ((next (color-rules rest ...))
(rx (make-regexp regexp)))
(lambda (str)
(if (string-index str #\nul)
str
(match (regexp-exec rx str)
(#f (next str))
(m (let loop ((n 1)
(c '(colors ...))
(result '()))
(match c
(()
(string-concatenate-reverse result))
((first . tail)
(loop (+ n 1) tail
(cons (colorize-string (match:substring m n)
first)
result)))))))))))
((_)
(lambda (str)
str))))

44
guix/status.scm
View file

@ -20,7 +20,7 @@
(define-module (guix status)
#:use-module (guix records)
#:use-module (guix i18n)
#:use-module ((guix ui) #:select (colorize-string))
#:use-module (guix colors)
#:use-module (guix progress)
#:autoload (guix build syscalls) (terminal-columns)
#:use-module ((guix build download)
@ -339,10 +339,6 @@ (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 (phase port)
@ -362,44 +358,6 @@ (define spin!
(format port (G_ "'~a' phase") phase))
(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)))
(define-syntax color-rules
(syntax-rules ()
"Return a procedure that colorizes the string it is passed according to
the given rules. Each rule has the form:
(REGEXP COLOR1 COLOR2 ...)
where COLOR1 specifies how to colorize the first submatch of REGEXP, and so
on."
((_ (regexp colors ...) rest ...)
(let ((next (color-rules rest ...))
(rx (make-regexp regexp)))
(lambda (str)
(if (string-index str #\nul)
str
(match (regexp-exec rx str)
(#f (next str))
(m (let loop ((n 1)
(c '(colors ...))
(result '()))
(match c
(()
(string-concatenate-reverse result))
((first . tail)
(loop (+ n 1) tail
(cons (colorize-string (match:substring m n)
first)
result)))))))))))
((_)
(lambda (str)
str))))
(define colorize-log-line
;; Take a string and return a possibly colorized string according to the
;; rules below.

55
guix/ui.scm
View file

@ -10,8 +10,6 @@
;;; Copyright © 2016 Roel Janssen <roel@gnu.org>
;;; Copyright © 2016 Benz Schenk <benz.schenk@uzh.ch>
;;; Copyright © 2018 Kyle Meyer <kyle@kyleam.com>
;;; Copyright © 2013, 2014 Free Software Foundation, Inc.
;;; Copyright © 2018 Sahithi Yarlagadda <sahi@swecha.net>
;;; Copyright © 2018 Ricardo Wurmus <rekado@elephly.net>
;;;
;;; This file is part of GNU Guix.
@ -118,8 +116,7 @@ (define-module (guix ui)
guix-warning-port
warning
info
guix-main
colorize-string))
guix-main))
;;; Commentary:
;;;
@ -1703,54 +1700,4 @@ (define (guix-main arg0 . args)
(initialize-guix)
(apply run-guix args))
(define color-table
`((CLEAR . "0")
(RESET . "0")
(BOLD . "1")
(DARK . "2")
(UNDERLINE . "4")
(UNDERSCORE . "4")
(BLINK . "5")
(REVERSE . "6")
(CONCEALED . "8")
(BLACK . "30")
(RED . "31")
(GREEN . "32")
(YELLOW . "33")
(BLUE . "34")
(MAGENTA . "35")
(CYAN . "36")
(WHITE . "37")
(ON-BLACK . "40")
(ON-RED . "41")
(ON-GREEN . "42")
(ON-YELLOW . "43")
(ON-BLUE . "44")
(ON-MAGENTA . "45")
(ON-CYAN . "46")
(ON-WHITE . "47")))
(define (color . lst)
"Return a string containing the ANSI escape sequence for producing the
requested set of attributes in LST. Unknown attributes are ignored."
(let ((color-list
(remove not
(map (lambda (color) (assq-ref color-table color))
lst))))
(if (null? color-list)
""
(string-append
(string #\esc #\[)
(string-join color-list ";" 'infix)
"m"))))
(define (colorize-string str . color-list)
"Return a copy of STR colorized using ANSI escape sequences according to the
attributes STR. At the end of the returned string, the color attributes will
be reset such that subsequent output will not have any colors in effect."
(string-append
(apply color color-list)
str
(color 'RESET)))
;;; ui.scm ends here