mirror of
https://git.in.rschanz.org/ryan77627/guix.git
synced 2024-11-12 09:56:14 -05:00
b83e4a93a2
* gnu/installer/connman.scm (connman-connect-with-auth): Fix typo in documentation. * gnu/installer/newt/keymap.scm (sort-variants): Likewise. * gnu/installer/newt/page.scm (run-listbox-selection-page): Likewise. * gnu/installer/parted.scm (mkpart): Likewise. * gnu/installer/newt/utils.scm (destroy-form-and-pop): Likewise. * gnu/installer/newt/wifi.scm (run-unknown-error-page): Fix typo. (wifi-listbox-heigth): Rename to… (wifi-listbox-height): …this, and adjust caller. * gnu/installer/timezone.scm (locate-childrens): Rename to… (locate-children): …this. Adjust all callers.
127 lines
4.3 KiB
Scheme
127 lines
4.3 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
|
||
;;; Copyright © 2018 Mathieu Othacehe <m.othacehe@gmail.com>
|
||
;;;
|
||
;;; 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 (gnu installer timezone)
|
||
#:use-module (gnu installer utils)
|
||
#:use-module (guix i18n)
|
||
#:use-module (srfi srfi-1)
|
||
#:use-module (srfi srfi-26)
|
||
#:use-module (srfi srfi-34)
|
||
#:use-module (srfi srfi-35)
|
||
#:use-module (ice-9 match)
|
||
#:use-module (ice-9 receive)
|
||
#:export (locate-children
|
||
timezone->posix-tz
|
||
timezone-has-child?
|
||
zonetab->timezone-tree
|
||
posix-tz->configuration))
|
||
|
||
(define %not-blank
|
||
(char-set-complement char-set:blank))
|
||
|
||
(define (posix-tz->timezone tz)
|
||
"Convert given TZ in Posix format like \"Europe/Paris\" into a list like
|
||
(\"Europe\" \"Paris\")."
|
||
(string-split tz #\/))
|
||
|
||
(define (timezone->posix-tz timezone)
|
||
"Convert given TIMEZONE like (\"Europe\" \"Paris\") into a Posix timezone
|
||
like \"Europe/Paris\"."
|
||
(string-join timezone "/"))
|
||
|
||
(define (zonetab->timezones zonetab)
|
||
"Parse ZONETAB file and return the corresponding list of timezones."
|
||
|
||
(define (zonetab-line->posix-tz line)
|
||
(let ((tokens (string-tokenize line %not-blank)))
|
||
(match tokens
|
||
((code coordinates tz _ ...)
|
||
tz))))
|
||
|
||
(call-with-input-file zonetab
|
||
(lambda (port)
|
||
(let* ((lines (read-lines port))
|
||
;; Filter comment lines starting with '#' character.
|
||
(tz-lines (filter (lambda (line)
|
||
(not (eq? (string-ref line 0)
|
||
#\#)))
|
||
lines)))
|
||
(map (lambda (line)
|
||
(posix-tz->timezone
|
||
(zonetab-line->posix-tz line)))
|
||
tz-lines)))))
|
||
|
||
(define (timezones->timezone-tree timezones)
|
||
"Convert the list of timezones, TIMEZONES into a tree under the form:
|
||
|
||
(\"America\" (\"North_Dakota\" \"New_Salem\" \"Center\"))
|
||
|
||
representing America/North_Dakota/New_Salem and America/North_Dakota/Center
|
||
timezones."
|
||
|
||
(define (remove-first lists)
|
||
"Remove the first element of every sublists in the argument LISTS."
|
||
(map (lambda (list)
|
||
(if (null? list) list (cdr list)))
|
||
lists))
|
||
|
||
(let loop ((cur-timezones timezones))
|
||
(match cur-timezones
|
||
(() '())
|
||
(((region . rest-region) . rest-timezones)
|
||
(if (null? rest-region)
|
||
(cons (list region) (loop rest-timezones))
|
||
(receive (same-region other-region)
|
||
(partition (lambda (timezone)
|
||
(string=? (car timezone) region))
|
||
cur-timezones)
|
||
(acons region
|
||
(loop (remove-first same-region))
|
||
(loop other-region))))))))
|
||
|
||
(define (locate-children tree path)
|
||
"Return the children of the timezone indicated by PATH in the given
|
||
TREE. Raise a condition if the PATH could not be found."
|
||
(let ((extract-proc (cut map car <>)))
|
||
(match path
|
||
(() (sort (extract-proc tree) string<?))
|
||
((region . rest)
|
||
(or (and=> (assoc-ref tree region)
|
||
(cut locate-children <> rest))
|
||
(raise
|
||
(condition
|
||
(&message
|
||
(message
|
||
(format #f (G_ "Unable to locate path: ~a.") path))))))))))
|
||
|
||
(define (timezone-has-child? tree timezone)
|
||
"Return #t if the given TIMEZONE any child in TREE and #f otherwise."
|
||
(not (null? (locate-children tree timezone))))
|
||
|
||
(define* (zonetab->timezone-tree zonetab)
|
||
"Return the timezone tree corresponding to the given ZONETAB file."
|
||
(timezones->timezone-tree (zonetab->timezones zonetab)))
|
||
|
||
|
||
;;;
|
||
;;; Configuration formatter.
|
||
;;;
|
||
|
||
(define (posix-tz->configuration timezone)
|
||
"Return the configuration field for TIMEZONE."
|
||
`((timezone ,timezone)))
|