guix - Wojtek's customized Guix

diff options
Diffstat (limited to 'tests/modules.scm')
0 files changed, 0 insertions, 0 deletions
#n45'>45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217
;;; 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 newt locale)
  #:use-module (gnu installer locale)
  #:use-module (gnu installer steps)
  #:use-module (gnu installer newt page)
  #:use-module (guix i18n)
  #:use-module (newt)
  #: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)
  #:export (run-locale-page))

(define (run-language-page languages language->text)
  (let ((title (G_ "Locale language")))
    (run-listbox-selection-page
     #:title title
     #:info-text (G_ "Choose the locale's language to be used for the \
installation process. A locale is a regional variant of your language \
encompassing number, date and currency format, among other details.

Based on the language you choose, you will possibly be asked to \
select a locale's territory, codeset and modifier in the next \
steps. The locale will also be used as the default one for the \
installed system.")
     #:info-textbox-width 70
     #:listbox-items languages
     #:listbox-item->text language->text
     #:sort-listbox-items? #f
     #:button-text (G_ "Exit")
     #:button-callback-procedure
     (lambda _
       (raise
        (condition
         (&installer-step-abort)))))))

(define (run-territory-page territories territory->text)
  (let ((title (G_ "Locale location")))
    (run-listbox-selection-page
     #:title title
     #:info-text (G_ "Choose your locale's location. This is a shortlist of \
locations based on the language you selected.")
     #:listbox-items territories
     #:listbox-item->text territory->text
     #:button-text (G_ "Back")
     #:button-callback-procedure
     (lambda _
       (raise
        (condition
         (&installer-step-abort)))))))

(define (run-codeset-page codesets)
  (let ((title (G_ "Locale codeset")))
    (run-listbox-selection-page
     #:title title
     #:info-text (G_ "Choose your locale's codeset. If UTF-8 is available, \
 it should be preferred.")
     #:listbox-items codesets
     #:listbox-item->text identity
     #:listbox-default-item "UTF-8"
     #:button-text (G_ "Back")
     #:button-callback-procedure
     (lambda _
       (raise
        (condition
         (&installer-step-abort)))))))

(define (run-modifier-page modifiers modifier->text)
  (let ((title (G_ "Locale modifier")))
    (run-listbox-selection-page
     #:title title
     #:info-text (G_ "Choose your locale's modifier. The most frequent \
modifier is euro. It indicates that you want to use Euro as the currency \
symbol.")
     #:listbox-items modifiers
     #:listbox-item->text modifier->text
     #:button-text (G_ "Back")
     #:button-callback-procedure
     (lambda _
       (raise
        (condition
         (&installer-step-abort)))))))

(define* (run-locale-page #:key
                          supported-locales
                          iso639-languages
                          iso3166-territories)
  "Run a page asking the user to select a locale language and possibly
territory, codeset and modifier. Use SUPPORTED-LOCALES as the list of glibc
available locales. ISO639-LANGUAGES is an association list associating a
locale code to a locale name. ISO3166-TERRITORIES is an association list
associating a territory code with a territory name. The formated locale, under
glibc format is returned."

  (define (break-on-locale-found locales)
    "Raise the &installer-step-break condition if LOCALES contains exactly one
element."
    (and (= (length locales) 1)
         (raise
          (condition (&installer-step-break)))))

  (define (filter-locales locales result)
    "Filter the list of locale records LOCALES using the RESULT returned by
the installer-steps defined below."
    (filter
     (lambda (locale)
       (and-map identity
                `(,(string=? (locale-language locale)
                             (result-step result 'language))
                  ,@(if (result-step-done? result 'territory)
                        (list (equal? (locale-territory locale)
                                      (result-step result 'territory)))
                        '())
                  ,@(if (result-step-done? result 'codeset)
                        (list (equal? (locale-codeset locale)
                                      (result-step result 'codeset)))
                        '())
                  ,@(if (result-step-done? result 'modifier)
                        (list (equal? (locale-modifier locale)
                                      (result-step result 'modifier)))
                        '()))))
     locales))

  (define (result->locale-string locales result)
    "Supposing that LOCALES contains exactly one locale record, turn it into a
glibc locale string and return it."
    (match (filter-locales locales result)
      ((locale)
       (locale->locale-string locale))))

  (define (sort-languages languages)
    "Extract some languages from LANGUAGES list and place them ahead."
    (let* ((first-languages '("en"))
           (other-languages (lset-difference equal?
                                             languages
                                             first-languages)))
      `(,@first-languages ,@other-languages)))

  (define locale-steps
    (list
     (installer-step
      (id 'language)
      (compute
       (lambda _
         (run-language-page
          (sort-languages
           (delete-duplicates (map locale-language supported-locales)))
          (cut language-code->language-name iso639-languages <>)))))
     (installer-step
      (id 'territory)
      (compute
       (lambda (result _)
         (let ((locales (filter-locales supported-locales result)))
           ;; Stop the process if the language returned by the previous step
           ;; is matching one and only one supported locale.
           (break-on-locale-found locales)

           ;; Otherwise, ask the user to select a territory among those
           ;; supported by the previously selected language.
           (run-territory-page
            (delete-duplicates (map locale-territory locales))
            (lambda (territory-code)
              (if territory-code
                  (territory-code->territory-name iso3166-territories
                                                  territory-code)
                  (G_ "No location"))))))))
     (installer-step
      (id 'codeset)
      (compute
       (lambda (result _)
         (let ((locales (filter-locales supported-locales result)))
           ;; Same as above but we now have a language and a territory to
           ;; narrow down the search of a locale.
           (break-on-locale-found locales)

           ;; Otherwise, ask for a codeset.
           (run-codeset-page
            (delete-duplicates (map locale-codeset locales)))))))
     (installer-step
      (id 'modifier)
      (compute
       (lambda (result _)
         (let ((locales (filter-locales supported-locales result)))
           ;; Same thing with a language, a territory and a codeset this time.
           (break-on-locale-found locales)

           ;; Otherwise, ask for a modifier.
           (run-modifier-page
            (delete-duplicates (map locale-modifier locales))
            (lambda (modifier)
              (or modifier (G_ "No modifier"))))))))))

  ;; If run-installer-steps returns locally, it means that the user had to go
  ;; through all steps (language, territory, codeset and modifier) to select a
  ;; locale. In that case, like if we exited by raising &installer-step-break
  ;; condition, turn the result into a glibc locale string and return it.
  (result->locale-string
   supported-locales
   (run-installer-steps #:steps locale-steps)))

context:
space:
mode: