lisp/pcmpl-linux.el

   1 ;;; pcmpl-linux.el --- functions for dealing with GNU/Linux completions
   2
   3 ;; Copyright (C) 1999, 2000 Free Software Foundation
   4
   5 ;; This file is part of GNU Emacs.
   6
   7 ;; GNU Emacs is free software; you can redistribute it and/or modify
   8 ;; it under the terms of the GNU General Public License as published by
   9 ;; the Free Software Foundation; either version 2, or (at your option)
  10 ;; any later version.
  11
  12 ;; GNU Emacs is distributed in the hope that it will be useful,
  13 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 ;; GNU General Public License for more details.
  16
  17 ;; You should have received a copy of the GNU General Public License
  18 ;; along with GNU Emacs; see the file COPYING.  If not, write to the
  19 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  20 ;; Boston, MA 02111-1307, USA.
  21
  22 ;;; Commentary:
  23
  24 ;; These functions are for use with GNU/Linux.  Since they depend on a
  25 ;; certain knowledge of the layout of such systems, they probably
  26 ;; won't work very well on other operating systems.
  27
  28 ;;; Code:
  29
  30 (provide 'pcmpl-linux)
  31
  32 (require 'pcomplete)
  33
  34 (defgroup pcmpl-linux nil
  35   "Functions for dealing with GNU/Linux completions."
  36   :group 'pcomplete)
  37
  38 ;; Functions:
  39
  40 ;;;###autoload
  41 (defun pcomplete/kill ()
  42   "Completion for GNU/Linux `kill', using /proc filesystem."
  43   (if (pcomplete-match "^-\\(.*\\)" 0)
  44       (pcomplete-here
  45        (pcomplete-uniqify-list
  46         (split-string
  47          (pcomplete-process-result "kill" "-l")))
  48        (pcomplete-match-string 1 0)))
  49   (while (pcomplete-here
  50           (if (file-directory-p "/proc")
  51               (let ((default-directory "/proc/"))
  52                 (mapcar 'directory-file-name
  53                         (pcomplete-entries "[0-9]+/$"))))
  54           nil 'identity)))
  55
  56 ;;;###autoload
  57 (defun pcomplete/umount ()
  58   "Completion for GNU/Linux `umount'."
  59   (pcomplete-opt "hVafrnvt(pcmpl-linux-fs-types)")
  60   (while (pcomplete-here (pcmpl-linux-mounted-directories)
  61                          nil 'identity)))
  62
  63 ;;;###autoload
  64 (defun pcomplete/mount ()
  65   "Completion for GNU/Linux `mount'."
  66   (pcomplete-opt "hVanfFrsvwt(pcmpl-linux-fs-types)o?L?U?")
  67   (while (pcomplete-here (pcomplete-entries) nil 'identity)))
  68
  69 (defun pcmpl-linux-fs-types ()
  70   "Return a list of available fs modules on GNU/Linux systems."
  71   (let ((kernel-ver (pcomplete-process-result "uname" "-r")))
  72     (mapcar
  73      (function
  74       (lambda (fsobj)
  75         (substring fsobj 0 (- (length fsobj) 2))))
  76      (let ((default-directory
  77              (concat "/lib/modules/" kernel-ver "/fs/")))
  78        (pcomplete-entries "\\.o$")))))
  79
  80 (defun pcmpl-linux-mounted-directories ()
  81   "Return a list of mounted directory names."
  82   (let (points)
  83     (when (file-readable-p "/etc/mtab")
  84       (with-temp-buffer
  85         (insert-file-contents-literally "/etc/mtab")
  86         (while (not (eobp))
  87           (let* ((line (buffer-substring (point) (line-end-position)))
  88                  (args (split-string line " ")))
  89             (setq points (cons (nth 1 args) points)))
  90           (forward-line)))
  91       (pcomplete-uniqify-list points))))
  92
  93 (defun pcmpl-linux-mountable-directories ()
  94   "Return a list of mountable directory names."
  95   (let (points)
  96     (when (file-readable-p "/etc/fstab")
  97       (with-temp-buffer
  98         (insert-file-contents-literally "/etc/fstab")
  99         (while (not (eobp))
 100           (let* ((line (buffer-substring (point) (line-end-position)))
 101                  (args (split-string line "\\s-+")))
 102             (setq points (cons (nth 1 args) points)))
 103           (forward-line)))
 104       (pcomplete-pare-list
 105        (pcomplete-uniqify-list points)
 106        (cons "swap" (pcmpl-linux-mounted-directories))))))
 107
 108 ;;; pcmpl-linux.el ends here