;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2021 Andrew Tropin <andrew@trop.in>
;;; Copyright © 2021 Xinglu Chen <public@yoctocell.xyz>
;;; Copyright © 2023 Giacomo Leidi <goodoldpaul@autistici.org>
;;; Copyright © 2023 Andrew Patterson <andrewpatt7@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 home services fontutils)
  #:use-module (gnu home services)
  #:use-module (gnu packages fontutils)
  #:use-module (guix gexp)
  #:use-module (srfi srfi-1)
  #:use-module (ice-9 match)
  #:use-module (sxml simple)

  #:export (home-fontconfig-service-type))

;;; Commentary:
;;;
;;; Services related to fonts.  home-fontconfig service provides
;;; fontconfig configuration, which allows fc-* utilities to find
;;; fonts in Guix Home's profile and regenerates font cache on
;;; activation.
;;;
;;; Code:

(define (write-fontconfig-doctype)
  "Prints fontconfig's DOCTYPE to current-output-port."
  ;; This is necessary because SXML doesn't seem to have a way to represent a doctype,
  ;; but sxml->xml /does/ currently call any thunks in the SXML with the XML output port
  ;; as current-output-port, allowing the output to include arbitrary text instead of
  ;; just properly quoted XML.
  (format #t "<!DOCTYPE fontconfig SYSTEM 'fonts.dtd'>"))

(define (config->sxml config)
  "Converts a <home-fontconfig-configuration> record into the SXML representation
of fontconfig's fonts.conf file."
  (define (snippets->sxml snippet)
    (match snippet
      ((or (? string? dir)
           (? gexp? dir))
       `(dir ,dir))
      ((? list?)
       snippet)))
  `(*TOP* (*PI* xml "version='1.0'")
          ,write-fontconfig-doctype
          (fontconfig
           ,@(map snippets->sxml config))))

(define (add-fontconfig-config-file config)
  `(("fontconfig/fonts.conf"
     ,(mixed-text-file
       "fonts.conf"
       (call-with-output-string
         (lambda (port)
           (sxml->xml (config->sxml config) port)))))))

(define (regenerate-font-cache-gexp _)
  `(("profile/share/fonts"
     ,#~(system* #$(file-append fontconfig "/bin/fc-cache") "-fv"))))

(define home-fontconfig-service-type
  (service-type (name 'home-fontconfig)
                (extensions
                 (list (service-extension
                        home-xdg-configuration-files-service-type
                        add-fontconfig-config-file)
                       (service-extension
                        home-run-on-change-service-type
                        regenerate-font-cache-gexp)))
                (compose concatenate)
                (extend append)
                (default-value '("~/.guix-home/profile/share/fonts"))
                (description
                 "Provides configuration file for fontconfig and make
fc-* utilities aware of font packages installed in Guix Home's profile.")))
fg (po4a_langs): Add 'sv'.
* doc/local.mk: Add 'sv' cookbook.
* doc/htmlxref.cnf: Update URLs for cookbook.
* doc/build.scm (%cookbook-languages): Add 'sv'.
* doc/guix-cookbook.texi (Top): Mention 'sv' cookbook.

Change-Id: Ibfeb7254f583f1c8827e8c2756bbb02880bcba46
</span></span></td><td>Florian Pelz</td></tr>
<tr><td><span title='2024-05-01 02:42:54 +0200'>2024-05-01</span></td><td><a href='/guix/commit/po/packages?id=8bf41c80ef13ea57e834f4e23d649bd99a3e08fc'>nls: Update translations.</a><span class='msg-avail'>...<span class='msg-tooltip'>* po/packages/sv.po: New file.
* po/packages/LINGUAS: Add it.

Change-Id: I2ad4dfcb935ba0a4e79c15b86cee6826c6580729
</span></span></td><td>Florian Pelz</td></tr>
<tr><td><span title='2024-04-14 10:29:11 +0200'>2024-04-14</span></td><td><a href='/guix/commit/po/packages?id=6c63c366776643e5831c50a2b7e29bad93273327'>maint: Use xgettext.scm wrapper to create .PO files reproducibly.</a><span class='msg-avail'>...<span class='msg-tooltip'>* build-aux/xgettext.scm: New script.
* po/guix/Makevars (XGETTEXT): Set it.
(XGETTEXT_OPTIONS): Add --xgettext option to `real' xgettext.
* po/packages/Makevars (XGETTEXT): Set it.
(XGETTEXT_OPTIONS): Add --xgettext option to `real' xgettext.

Change-Id: I71b6b843970090f765f46ac346b92a346560e3f0
</span></span></td><td>Janneke Nieuwenhuizen</td></tr>
<tr><td><span title='2024-04-01 14:09:20 +0200'>2024-04-01</span></td><td><a href='/guix/commit/po/packages?id=fa98837b1d9586b9ca7bf77dae22c3bde0fc59b5'>nls: Update translations.</a><span class='msg-avail'>...<span class='msg-tooltip'>* po/guix/ar.po: New file.
* po/guix/LINGUAS: Add 'ar'.
* po/doc/guix-cookbook.pt_BR.po: New file.
* po/doc/local.mk: Add 'pt_BR' cookbook.
* doc/local.mk: Add 'pt_BR' cookbook.
* doc/htmlxref.cnf: Update URLs for cookbook.
* doc/build.scm (%cookbook-languages): Add 'ko', 'pt_BR'.
* doc/guix-cookbook.texi (Top): Mention 'ko', 'pt_BR' cookbook.

Change-Id: Id1846ca100263b3fc1fa2ed52654c670270ee809
</span></span></td><td>Florian Pelz</td></tr>
<tr><td><span title='2024-02-29 22:57:09 +0100'>2024-02-29</span></td><td><a href='/guix/commit/po/packages?id=956f44b931f050fbffca51737000b9049808b3ca'>nls: Update translations.</a><span class='msg-avail'>...<span class='msg-tooltip'>Change-Id: Ic1506db5813880153b6def005011618dc4529e8f
</span></span></td><td>Florian Pelz</td></tr>
<tr><td><span title='2024-02-01 18:34:22 +0100'>2024-02-01</span></td><td><a href='/guix/commit/po/packages?id=6f78803b01d416ab421ba860751b764b9e4f33db'>nls: Update translations.</a><span class='msg-avail'>...<span class='msg-tooltip'>Change-Id: I42b5d41bdd5cd1b096c977e132b7a85992223402
</span></span></td><td>Florian Pelz</td></tr>
<tr><td><span title='2023-10-31 23:01:37 +0100'>2023-10-31</span></td><td><a href='/guix/commit/po/packages?id=938a47c86d7bea785f33f42834c5c1f3dfa594b0'>nls: Update translations.</a><span class='msg-avail'>...<span class='msg-tooltip'>Change-Id: I432aec0ea31ead192d6444c96dc42038f5c7ab9a
</span></span></td><td>Florian Pelz</td></tr>
<tr><td><span title='2023-08-31 21:36:03 +0200'>2023-08-31</span></td><td><a href='/guix/commit/po/packages?id=57ab9536db20f98a36aeb25972137fbd752686cc'>nls: Update translations.</a></td><td>Florian Pelz</td></tr>