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b5054a85c1
To save a lot of disk space, keep only actually translated messages in Gettext PO files. Ignore the guix domain, which is more complicated and is tiny. * build-aux/keep-only-translated.scm: New file. * Makefile.am (download-po): Run it. Change-Id: I6442ce0ef8d62f7e48e667c766b86d0ebf9c5415
78 lines
2.7 KiB
Scheme
78 lines
2.7 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
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;;; Copyright © 2025 Florian Pelz <pelzflorian@pelzflorian.de>
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;;;
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;;; This file is part of GNU Guix.
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;;;
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;;; GNU Guix is free software; you can redistribute it and/or modify it
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;;; under the terms of the GNU General Public License as published by
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;;; the Free Software Foundation; either version 3 of the License, or (at
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;;; your option) any later version.
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;;;
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;;; GNU Guix is distributed in the hope that it will be useful, but
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;;; WITHOUT ANY WARRANTY; without even the implied warranty of
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;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;;; GNU General Public License for more details.
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;;;
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;;; You should have received a copy of the GNU General Public License
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;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
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;; Minify Gettext PO files when synced from
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;; <https://codeberg.org/guix/translations/>,
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;; keeping only actually translated messages.
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;; Note: This does not work for PO files of the guix domain, which needed
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;; support for plural forms in (@ (guix build po) read-po-file). The guix
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;; domain's files are comparatively small and the read-po-file API would
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;; have to be expanded to use records or such; it is not worth it.
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(use-modules (guix build po)
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(ice-9 match)
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(ice-9 textual-ports))
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(define (escape str)
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"Escape msgid or msgstr. Replace by C-style escape sequences."
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(let* ((in (open-input-string str))
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(text (get-string-all in))
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(escaped-text-as-list
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(string-fold-right
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(lambda (char result)
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(cons (case char
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((#\") "\\\"")
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((#\\) "\\\\")
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((#\linefeed) "\\n")
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((#\return) "\\r")
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((#\tab) "\\t")
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(else (string char)))
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result))
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'()
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text))
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(escaped-text (apply string-append escaped-text-as-list)))
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(display escaped-text)))
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(match (command-line)
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((program pofile)
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(let ((input (open-input-file pofile)))
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;; Just copy until an empty line.
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(letrec ((copy
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(lambda ()
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(let ((next-line (get-line input)))
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(display next-line)
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(newline)
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(when (> (string-length next-line) 0)
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(copy))))))
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(copy))
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;; Then print only translated messages.
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(for-each
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(lambda (msg)
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(match msg
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((msgid . msgstr)
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(display "msgid \"")
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(escape msgid)
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(display "\"")
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(newline)
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(display "msgstr \"")
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(escape msgstr)
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(display "\"")
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(newline)
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(newline))))
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(read-po-file input)))))
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