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73ce3c19c4
* emacs/guix-info.el: Use new entry procedures. * emacs/guix-list.el: Likewise. * emacs/guix-base.el: Likewise. (guix-get-entry-by-id): Move and rename to ... * emacs/guix-entry.el (guix-entry-by-id): ...this. New file. (guix-entry-value, guix-entry-id, guix-entries-by-ids) (guix-replace-entry): New procedures. * emacs.am (ELFILES): Add new file.
59 lines
1.9 KiB
EmacsLisp
59 lines
1.9 KiB
EmacsLisp
;;; guix-entry.el --- 'Entry' type -*- lexical-binding: t -*-
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;; Copyright © 2015 Alex Kost <alezost@gmail.com>
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;; This file is part of GNU Guix.
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;; GNU Guix 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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;; GNU Guix 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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;;; Commentary:
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;; This file provides an API for 'entry' type which is just an alist of
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;; KEY/VALUE pairs (KEY should be a symbol) with the required 'id' KEY.
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;;; Code:
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(require 'cl-lib)
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(require 'guix-utils)
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(defalias 'guix-entry-value #'guix-assq-value)
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(defun guix-entry-id (entry)
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"Return ENTRY ID."
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(guix-entry-value entry 'id))
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(defun guix-entry-by-id (id entries)
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"Return an entry from ENTRIES by its ID."
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(cl-find-if (lambda (entry)
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(equal (guix-entry-id entry) id))
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entries))
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(defun guix-entries-by-ids (ids entries)
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"Return entries with IDS (a list of identifiers) from ENTRIES."
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(cl-remove-if-not (lambda (entry)
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(member (guix-entry-id entry) ids))
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entries))
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(defun guix-replace-entry (id new-entry entries)
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"Replace an entry with ID from ENTRIES by NEW-ENTRY.
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Return a list of entries with the replaced entry."
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(cl-substitute-if new-entry
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(lambda (entry)
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(equal id (guix-entry-id entry)))
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entries
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:count 1))
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(provide 'guix-entry)
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;;; guix-entry.el ends here
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