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116 lines
3.6 KiB
EmacsLisp
116 lines
3.6 KiB
EmacsLisp
;;; pcmpl-linux.el --- functions for dealing with GNU/Linux completions
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;; Copyright (C) 1999-2020 Free Software Foundation, Inc.
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;; Package: pcomplete
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;; This file is part of GNU Emacs.
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;; GNU Emacs 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 Emacs 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 GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
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;;; Commentary:
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;; These functions are for use with GNU/Linux. Since they depend on a
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;; certain knowledge of the layout of such systems, they probably
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;; won't work very well on other operating systems.
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;;; Code:
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(provide 'pcmpl-linux)
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(require 'pcomplete)
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;; Unused.
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;;; (defgroup pcmpl-linux nil
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;;; "Functions for dealing with GNU/Linux completions."
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;;; :group 'pcomplete)
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;; Functions:
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;;;###autoload
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(defun pcomplete/kill ()
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"Completion for GNU/Linux `kill', using /proc filesystem."
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(if (pcomplete-match "^-\\(.*\\)" 0)
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(pcomplete-here
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(pcomplete-uniquify-list
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(split-string
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(pcomplete-process-result "kill" "-l")))
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(pcomplete-match-string 1 0)))
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(while (pcomplete-here
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(if (file-directory-p "/proc")
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(directory-files "/proc" nil "\\`[0-9]+\\'"))
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nil 'identity)))
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;;;###autoload
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(defun pcomplete/umount ()
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"Completion for GNU/Linux `umount'."
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(pcomplete-opt "hVafrnvt(pcmpl-linux-fs-types)")
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(while (pcomplete-here (pcmpl-linux-mounted-directories)
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nil 'identity)))
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;;;###autoload
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(defun pcomplete/mount ()
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"Completion for GNU/Linux `mount'."
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(pcomplete-opt "hVanfFrsvwt(pcmpl-linux-fs-types)o?L?U?")
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(while (pcomplete-here (pcomplete-entries) nil 'identity)))
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(defun pcmpl-linux-fs-types ()
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"Return a list of available fs modules on GNU/Linux systems."
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(let ((kernel-ver (pcomplete-process-result "uname" "-r")))
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(directory-files
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(concat "/lib/modules/" kernel-ver "/kernel/fs/"))))
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(defun pcmpl-linux-mounted-directories ()
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"Return a list of mounted directory names."
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(let (points)
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(when (file-readable-p "/etc/mtab")
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(with-temp-buffer
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(insert-file-contents-literally "/etc/mtab")
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(while (not (eobp))
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(let* ((line (buffer-substring (point) (line-end-position)))
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(args (split-string line " ")))
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(setq points (cons (nth 1 args) points)))
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(forward-line)))
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(pcomplete-uniquify-list points))))
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(defun pcomplete-pare-list (l r)
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"Destructively remove from list L all elements matching any in list R.
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Test is done using `equal'."
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(while (and l (and r (member (car l) r)))
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(setq l (cdr l)))
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(let ((m l))
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(while m
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(while (and (cdr m)
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(and r (member (cadr m) r)))
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(setcdr m (cddr m)))
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(setq m (cdr m))))
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l)
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(defun pcmpl-linux-mountable-directories ()
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"Return a list of mountable directory names."
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(let (points)
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(when (file-readable-p "/etc/fstab")
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(with-temp-buffer
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(insert-file-contents-literally "/etc/fstab")
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(while (not (eobp))
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(let* ((line (buffer-substring (point) (line-end-position)))
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(args (split-string line "\\s-+")))
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(setq points (cons (nth 1 args) points)))
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(forward-line)))
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(pcomplete-pare-list
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(pcomplete-uniquify-list points)
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(cons "swap" (pcmpl-linux-mounted-directories))))))
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;;; pcmpl-linux.el ends here
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