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83 lines
3.2 KiB
Scheme
83 lines
3.2 KiB
Scheme
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;;; GNU Guix --- Functional package management for GNU
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;;; Copyright © 2020 Ludovic Courtès <ludo@gnu.org>
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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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;;;
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;;; Validate 'etc/news.scm'.
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;;;
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(use-modules (git)
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(guix git)
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(guix ui)
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(guix channels)
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(srfi srfi-26)
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(ice-9 match))
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;; XXX: These two things are currently private.
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(define read-channel-news (@@ (guix channels) read-channel-news))
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(define channel-news-entries (cut struct-ref <> 0))
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(define (all-the-news directory)
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"Return the <channel-news> read from DIRECTORY, a checkout of the 'guix'
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channel."
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(call-with-input-file (string-append directory "/etc/news.scm")
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read-channel-news))
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(define (validate-texinfo str type language)
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"Parse STR as a Texinfo fragment and raise an error if that fails."
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(catch #t
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(lambda ()
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(texi->plain-text str))
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(lambda (key . args)
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(print-exception (current-error-port) #f key args)
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(report-error (G_ "the Texinfo snippet below is invalid (~a, ~a):~%")
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type language)
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(display str (current-error-port))
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(exit 1))))
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(define (validate-news-entry repository entry)
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"Validate ENTRY, a <channel-news-entry>, making sure it refers to an
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existent commit of REPOSITORY and contains only valid Texinfo."
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(catch 'git-error
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(lambda ()
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(let ((commit (commit-lookup repository
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(string->oid
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(channel-news-entry-commit entry)))))
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(for-each (match-lambda
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((language . title)
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(validate-texinfo title 'title language)))
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(channel-news-entry-title entry))
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(for-each (match-lambda
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((language . body)
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(validate-texinfo body 'body language)))
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(channel-news-entry-body entry))))
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(lambda (key error . rest)
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(if (= GIT_ENOTFOUND (git-error-code error))
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(leave (G_ "commit '~a' of entry '~a' does not exist~%")
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(channel-news-entry-commit entry)
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(channel-news-entry-title entry))
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(apply throw key error rest)))))
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(let* ((this-directory (dirname (current-filename)))
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(top-directory (string-append this-directory "/.."))
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(entries (channel-news-entries (all-the-news top-directory))))
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(with-repository top-directory repository
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(for-each (cut validate-news-entry repository <>)
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entries)
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(info (G_ "All ~a channel news entries are valid.~%")
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(length entries))))
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