mirror of git://git.savannah.gnu.org/guix.git
66 lines
2.2 KiB
EmacsLisp
66 lines
2.2 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-read)
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(require 'guix-backend)
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(require 'guix-guile)
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(defun guix-license-file (&optional directory)
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"Return name of the file with license definitions.
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DIRECTORY is a directory with Guix source (`guix-directory' by default)."
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(expand-file-name "guix/licenses.scm"
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(or directory guix-directory)))
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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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;;;###autoload
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(defun guix-find-license-definition (license &optional directory)
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"Open licenses file from DIRECTORY and move to the LICENSE definition.
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See `guix-license-file' for the meaning of DIRECTORY.
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Interactively, with prefix argument, prompt for DIRECTORY."
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(interactive
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(list (guix-read-license-name)
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(guix-read-directory)))
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(find-file (guix-license-file directory))
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(goto-char (point-min))
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(when (re-search-forward (concat "\"" (regexp-quote license) "\"")
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nil t)
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(beginning-of-defun)
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(recenter 1)))
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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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(provide 'guix-license)
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;;; guix-license.el ends here
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