214 lines
7.6 KiB
Scheme
214 lines
7.6 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
|
|
;;; Copyright © 2012, 2013 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 ui)
|
|
#:use-module (guix utils)
|
|
#:use-module (guix store)
|
|
#:use-module (guix config)
|
|
#:use-module (guix packages)
|
|
#:use-module ((guix licenses) #:select (license? license-name))
|
|
#:use-module (srfi srfi-1)
|
|
#:use-module (srfi srfi-11)
|
|
#:use-module (srfi srfi-26)
|
|
#:use-module (srfi srfi-34)
|
|
#:use-module (ice-9 match)
|
|
#:export (_
|
|
N_
|
|
install-locale
|
|
leave
|
|
show-version-and-exit
|
|
show-bug-report-information
|
|
call-with-error-handling
|
|
with-error-handling
|
|
location->string
|
|
fill-paragraph
|
|
string->recutils
|
|
package->recutils))
|
|
|
|
;;; Commentary:
|
|
;;;
|
|
;;; User interface facilities for command-line tools.
|
|
;;;
|
|
;;; Code:
|
|
|
|
(define %gettext-domain
|
|
"guix")
|
|
|
|
(define _ (cut gettext <> %gettext-domain))
|
|
(define N_ (cut ngettext <> <> <> %gettext-domain))
|
|
|
|
(define (install-locale)
|
|
"Install the current locale settings."
|
|
(catch 'system-error
|
|
(lambda _
|
|
(setlocale LC_ALL ""))
|
|
(lambda args
|
|
(format (current-error-port)
|
|
(_ "warning: failed to install locale: ~a~%")
|
|
(strerror (system-error-errno args))))))
|
|
|
|
(define-syntax-rule (leave fmt args ...)
|
|
"Format FMT and ARGS to the error port and exit."
|
|
(begin
|
|
(format (current-error-port) fmt args ...)
|
|
(exit 1)))
|
|
|
|
(define* (show-version-and-exit #:optional (command (car (command-line))))
|
|
"Display version information for COMMAND and `(exit 0)'."
|
|
(simple-format #t "~a (~a) ~a~%"
|
|
command %guix-package-name %guix-version)
|
|
(exit 0))
|
|
|
|
(define (show-bug-report-information)
|
|
(format #t (_ "
|
|
Report bugs to: ~a.") %guix-bug-report-address)
|
|
(format #t (_ "
|
|
~a home page: <~a>") %guix-package-name %guix-home-page-url)
|
|
(display (_ "
|
|
General help using GNU software: <http://www.gnu.org/gethelp/>"))
|
|
(newline))
|
|
|
|
(define (call-with-error-handling thunk)
|
|
"Call THUNK within a user-friendly error handler."
|
|
(guard (c ((package-input-error? c)
|
|
(let* ((package (package-error-package c))
|
|
(input (package-error-invalid-input c))
|
|
(location (package-location package))
|
|
(file (location-file location))
|
|
(line (location-line location))
|
|
(column (location-column location)))
|
|
(leave (_ "~a:~a:~a: error: package `~a' has an invalid input: ~s~%")
|
|
file line column
|
|
(package-full-name package) input)))
|
|
((nix-protocol-error? c)
|
|
;; FIXME: Server-provided error messages aren't i18n'd.
|
|
(leave (_ "error: build failed: ~a~%")
|
|
(nix-protocol-error-message c))))
|
|
(thunk)))
|
|
|
|
(define-syntax with-error-handling
|
|
(syntax-rules ()
|
|
"Run BODY within a user-friendly error condition handler."
|
|
((_ body ...)
|
|
(call-with-error-handling
|
|
(lambda ()
|
|
body ...)))))
|
|
|
|
(define (location->string loc)
|
|
"Return a human-friendly, GNU-standard representation of LOC."
|
|
(match loc
|
|
(#f (_ "<unknown location>"))
|
|
(($ <location> file line column)
|
|
(format #f "~a:~a:~a" file line column))))
|
|
|
|
(define* (fill-paragraph str width #:optional (column 0))
|
|
"Fill STR such that each line contains at most WIDTH characters, assuming
|
|
that the first character is at COLUMN.
|
|
|
|
When STR contains a single line break surrounded by other characters, it is
|
|
converted to a space; sequences of more than one line break are preserved."
|
|
(define (maybe-break chr result)
|
|
(match result
|
|
((column newlines chars)
|
|
(case chr
|
|
((#\newline)
|
|
`(,column ,(+ 1 newlines) ,chars))
|
|
(else
|
|
(let ((chars (case newlines
|
|
((0) chars)
|
|
((1) (cons #\space chars))
|
|
(else
|
|
(append (make-list newlines #\newline) chars))))
|
|
(column (case newlines
|
|
((0) column)
|
|
((1) (+ 1 column))
|
|
(else 0))))
|
|
(let ((chars (cons chr chars))
|
|
(column (+ 1 column)))
|
|
(if (> column width)
|
|
(let*-values (((before after)
|
|
(break (cut eqv? #\space <>) chars))
|
|
((len)
|
|
(length before)))
|
|
(if (<= len width)
|
|
`(,len
|
|
0
|
|
,(if (null? after)
|
|
before
|
|
(append before (cons #\newline (cdr after)))))
|
|
`(,column 0 ,chars))) ; unbreakable
|
|
`(,column 0 ,chars)))))))))
|
|
|
|
(match (string-fold maybe-break
|
|
`(,column 0 ())
|
|
str)
|
|
((_ _ chars)
|
|
(list->string (reverse chars)))))
|
|
|
|
(define (string->recutils str)
|
|
"Return a version of STR where newlines have been replaced by newlines
|
|
followed by \"+ \", which makes for a valid multi-line field value in the
|
|
`recutils' syntax."
|
|
(list->string
|
|
(string-fold-right (lambda (chr result)
|
|
(if (eqv? chr #\newline)
|
|
(cons* chr #\+ #\space result)
|
|
(cons chr result)))
|
|
'()
|
|
str)))
|
|
|
|
(define* (package->recutils p port
|
|
#:optional (width (or (and=> (getenv "WIDTH")
|
|
string->number)
|
|
80)))
|
|
"Write to PORT a `recutils' record of package P, arranging to fit within
|
|
WIDTH columns."
|
|
(define (description->recutils str)
|
|
(let ((str (_ str)))
|
|
(string->recutils
|
|
(fill-paragraph str width
|
|
(string-length "description: ")))))
|
|
|
|
;; Note: Don't i18n field names so that people can post-process it.
|
|
(format port "name: ~a~%" (package-name p))
|
|
(format port "version: ~a~%" (package-version p))
|
|
(format port "location: ~a~%"
|
|
(or (and=> (package-location p) location->string)
|
|
(_ "unknown")))
|
|
(format port "home-page: ~a~%" (package-home-page p))
|
|
(format port "license: ~a~%"
|
|
(match (package-license p)
|
|
(((? license? licenses) ...)
|
|
(string-join (map license-name licenses)
|
|
", "))
|
|
((? license? license)
|
|
(license-name license))
|
|
(x
|
|
(_ "unknown"))))
|
|
(format port "synopsis: ~a~%"
|
|
(string-map (match-lambda
|
|
(#\newline #\space)
|
|
(chr chr))
|
|
(or (and=> (package-synopsis p) _)
|
|
"")))
|
|
(format port "description: ~a~%"
|
|
(and=> (package-description p) description->recutils))
|
|
(newline port))
|
|
|
|
;;; ui.scm ends here
|