80 lines
2.5 KiB
EmacsLisp
80 lines
2.5 KiB
EmacsLisp
;;; guix-location.el --- Package locations
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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 Location as published by
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;; the Free Software Foundation, either version 3 of the Location, 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 Location for more details.
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;; You should have received a copy of the GNU General Public Location
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;; along with this program. If not, see <http://www.gnu.org/locations/>.
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;;; Commentary:
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;; This file provides the code to work with locations of Guix packages.
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;;; Code:
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(require 'cl-lib)
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(require 'guix-backend)
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(require 'guix-read)
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(require 'guix-guile)
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(defun guix-package-location (id-or-name)
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"Return location of a package with ID-OR-NAME.
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For the meaning of location, see `guix-find-location'."
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(guix-eval-read (guix-make-guile-expression
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'package-location-string id-or-name)))
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;;;###autoload
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(defun guix-find-location (location &optional directory)
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"Go to LOCATION of a package.
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LOCATION is a string of the form:
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\"FILE:LINE:COLUMN\"
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If FILE is relative, it is considered to be relative to
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DIRECTORY (`guix-directory' by default).
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Interactively, prompt for LOCATION. With prefix argument, prompt
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for DIRECTORY as well."
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(interactive
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(list (guix-read-package-location)
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(guix-read-directory)))
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(cl-multiple-value-bind (file line column)
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(split-string location ":")
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(find-file (expand-file-name file (or directory guix-directory)))
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(when (and line column)
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(let ((line (string-to-number line))
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(column (string-to-number column)))
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(goto-char (point-min))
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(forward-line (- line 1))
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(move-to-column column)
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(recenter 1)))))
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;;;###autoload
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(defun guix-edit (id-or-name &optional directory)
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"Edit (go to location of) package with ID-OR-NAME.
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See `guix-find-location' for the meaning of package location and
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DIRECTORY.
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Interactively, with prefix argument, prompt for DIRECTORY."
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(interactive
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(list (guix-read-package-name)
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(guix-read-directory)))
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(let ((loc (guix-package-location id-or-name)))
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(if loc
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(guix-find-location loc directory)
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(message "Couldn't find package location."))))
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(provide 'guix-location)
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;;; guix-location.el ends here
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