mirror of https://codeberg.org/cage/tinmop/
80 lines
2.9 KiB
Common Lisp
80 lines
2.9 KiB
Common Lisp
;; tinmop: an humble gemini and pleroma client
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;; Copyright (C) 2021 cage
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;; This program is free software: you can redistribute it and/or modify
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;; it 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
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;; (at your option) any later version.
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;; This program is distributed in the hope that it will be useful,
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;; but 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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;; You should have received a copy of the GNU General Public License
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;; along with this program. If not, see <http://www.gnu.org/licenses/>.
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(in-package :gempub)
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(defrule title "title" (:constant :title))
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(defrule gpubVersion "gpubVersion" (:constant :gpubVersion))
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(defrule index "index" (:constant :index))
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(defrule author "author" (:constant :author))
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(defrule language "language" (:constant :language))
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(defrule charset "charset" (:constant :charset))
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(defrule description "description" (:constant :description))
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(defrule published "published" (:constant :published))
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(defrule publishDate "publishDate" (:constant :publishDate))
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(defrule revisionDate "revisionDate" (:constant :revisionDate))
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(defrule copyright "copyright" (:constant :copyright))
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(defrule license "license" (:constant :license))
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(defrule version "version" (:constant :version))
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(defrule cover "cover" (:constant :cover))
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(defrule blank (or #\space #\Newline #\Tab)
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(:constant nil))
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(defrule blanks (* blank)
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(:constant nil))
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(defrule key-value-separator #\:)
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(defrule value (+ (not #\Newline))
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(:text t))
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(defrule key (or title
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gpubVersion
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index
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author
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language
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charset
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description
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published
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publishDate
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revisionDate
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copyright
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license
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version
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cover))
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(defrule entry (and key (? blanks) key-value-separator (? blanks) value blanks)
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(:function (lambda (a) (list (first a) (fifth a)))))
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(defrule metadata (* entry)
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(:function flatten))
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(defgeneric parse-metadata (object))
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(defmethod parse-metadata ((object string))
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(parse 'metadata object))
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(define-constant +metadata-entry-name "metadata.txt" :test #'string=)
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(defmethod extract-metadata (zip-file)
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(when (zip-info:zip-file-p zip-file)
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(let ((entries (zip-info:list-entries zip-file)))
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(when (find +metadata-entry-name entries :test #'String=)
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(when-let ((metadata-raw (os-utils:unzip-single-file zip-file
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+metadata-entry-name)))
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(parse 'metadata metadata-raw))))))
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