131 lines
4.0 KiB
EmacsLisp
131 lines
4.0 KiB
EmacsLisp
;;; guix-license.el --- Licenses
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;; Copyright © 2016 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 the code to work with licenses of Guix packages.
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;;; Code:
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(require 'guix-buffer)
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(require 'guix-list)
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(require 'guix-info)
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(require 'guix-read)
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(require 'guix-backend)
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(require 'guix-guile)
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(guix-define-entry-type license)
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(defun guix-lookup-license-url (license)
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"Return URL of a LICENSE."
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(or (guix-eval-read (guix-make-guile-expression
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'lookup-license-uri license))
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(error "Hm, I don't know URL of '%s' license" license)))
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(defun guix-license-get-entries (search-type &rest args)
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"Receive 'license' entries.
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SEARCH-TYPE may be one of the following symbols: `all', `id', `name'."
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(guix-eval-read
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(apply #'guix-make-guile-expression
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'license-entries search-type args)))
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(defun guix-license-get-display (search-type &rest args)
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"Search for licenses and show results."
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(apply #'guix-list-get-display-entries
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'license search-type args))
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;;; License 'info'
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(guix-info-define-interface license
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:buffer-name "*Guix License Info*"
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:get-entries-function 'guix-license-get-entries
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:format '((name ignore (simple guix-info-heading))
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ignore
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guix-license-insert-packages-button
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(url ignore (simple guix-url))
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guix-license-insert-comment)
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:titles '((url . "URL")))
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(declare-function guix-packages-by-license "guix-ui-package")
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(defun guix-license-insert-packages-button (entry)
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"Insert button to display packages by license ENTRY."
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(guix-info-insert-action-button
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"Packages"
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(lambda (btn)
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(guix-packages-by-license (button-get btn 'license)))
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"Show packages with this license"
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'license (guix-entry-value entry 'name)))
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(defun guix-license-insert-comment (entry)
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"Insert 'comment' of a license ENTRY."
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(let ((comment (guix-entry-value entry 'comment)))
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(if (and comment
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(string-match-p "^http" comment))
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(guix-info-insert-value-simple comment 'guix-url)
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(guix-info-insert-title-simple
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(guix-info-param-title 'license 'comment))
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(guix-info-insert-value-indent comment))))
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;;; License 'list'
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(guix-list-define-interface license
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:buffer-name "*Guix Licenses*"
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:get-entries-function 'guix-license-get-entries
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:describe-function 'guix-license-list-describe
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:format '((name nil 40 t)
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(url guix-list-get-url 50 t))
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:titles '((name . "License"))
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:sort-key '(name))
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(let ((map guix-license-list-mode-map))
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(define-key map (kbd "RET") 'guix-license-list-show-packages))
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(defun guix-license-list-describe (ids)
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"Describe licenses with IDS (list of identifiers)."
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(guix-buffer-display-entries
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(guix-entries-by-ids ids (guix-buffer-current-entries))
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'info 'license (cl-list* 'id ids) 'add))
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(defun guix-license-list-show-packages ()
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"Display packages with the license at point."
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(interactive)
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(guix-packages-by-license (guix-list-current-id)))
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;;; Interactive commands
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;;;###autoload
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(defun guix-browse-license-url (license)
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"Browse URL of a LICENSE."
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(interactive (list (guix-read-license-name)))
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(browse-url (guix-lookup-license-url license)))
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;;;###autoload
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(defun guix-licenses ()
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"Display licenses of the Guix packages."
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(interactive)
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(guix-license-get-display 'all))
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(provide 'guix-license)
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;;; guix-license.el ends here
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