lisp/pcmpl-linux.el

   1 ;;; pcmpl-linux.el --- functions for dealing with GNU/Linux completions
   2
   3 ;; Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004,
   4 ;;   2005, 2006, 2007, 2008 Free Software Foundation, Inc.
   5
   6 ;; This file is part of GNU Emacs.
   7
   8 ;; GNU Emacs is free software; you can redistribute it and/or modify
   9 ;; it under the terms of the GNU General Public License as published by
  10 ;; the Free Software Foundation; either version 3, or (at your option)
  11 ;; any later version.
  12
  13 ;; GNU Emacs is distributed in the hope that it will be useful,
  14 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 ;; GNU General Public License for more details.
  17
  18 ;; You should have received a copy of the GNU General Public License
  19 ;; along with GNU Emacs; see the file COPYING.  If not, write to the
  20 ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  21 ;; Boston, MA 02110-1301, USA.
  22
  23 ;;; Commentary:
  24
  25 ;; These functions are for use with GNU/Linux.  Since they depend on a
  26 ;; certain knowledge of the layout of such systems, they probably
  27 ;; won't work very well on other operating systems.
  28
  29 ;;; Code:
  30
  31 (provide 'pcmpl-linux)
  32
  33 (require 'pcomplete)
  34
  35 (defgroup pcmpl-linux nil
  36   "Functions for dealing with GNU/Linux completions."
  37   :group 'pcomplete)
  38
  39 ;; Functions:
  40
  41 ;;;###autoload
  42 (defun pcomplete/kill ()
  43   "Completion for GNU/Linux `kill', using /proc filesystem."
  44   (if (pcomplete-match "^-\\(.*\\)" 0)
  45       (pcomplete-here
  46        (pcomplete-uniqify-list
  47         (split-string
  48          (pcomplete-process-result "kill" "-l")))
  49        (pcomplete-match-string 1 0)))
  50   (while (pcomplete-here
  51           (if (file-directory-p "/proc")
  52               (let ((default-directory "/proc/"))
  53                 (mapcar 'directory-file-name
  54                         (pcomplete-entries "[0-9]+/$"))))
  55           nil 'identity)))
  56
  57 ;;;###autoload
  58 (defun pcomplete/umount ()
  59   "Completion for GNU/Linux `umount'."
  60   (pcomplete-opt "hVafrnvt(pcmpl-linux-fs-types)")
  61   (while (pcomplete-here (pcmpl-linux-mounted-directories)
  62                          nil 'identity)))
  63
  64 ;;;###autoload
  65 (defun pcomplete/mount ()
  66   "Completion for GNU/Linux `mount'."
  67   (pcomplete-opt "hVanfFrsvwt(pcmpl-linux-fs-types)o?L?U?")
  68   (while (pcomplete-here (pcomplete-entries) nil 'identity)))
  69
  70 (defun pcmpl-linux-fs-types ()
  71   "Return a list of available fs modules on GNU/Linux systems."
  72   (let ((kernel-ver (pcomplete-process-result "uname" "-r")))
  73     (mapcar
  74      (function
  75       (lambda (fsobj)
  76         (substring fsobj 0 (- (length fsobj) 2))))
  77      (let ((default-directory
  78              (concat "/lib/modules/" kernel-ver "/fs/")))
  79        (pcomplete-entries "\\.o$")))))
  80
  81 (defun pcmpl-linux-mounted-directories ()
  82   "Return a list of mounted directory names."
  83   (let (points)
  84     (when (file-readable-p "/etc/mtab")
  85       (with-temp-buffer
  86         (insert-file-contents-literally "/etc/mtab")
  87         (while (not (eobp))
  88           (let* ((line (buffer-substring (point) (line-end-position)))
  89                  (args (split-string line " ")))
  90             (setq points (cons (nth 1 args) points)))
  91           (forward-line)))
  92       (pcomplete-uniqify-list points))))
  93
  94 (defun pcmpl-linux-mountable-directories ()
  95   "Return a list of mountable directory names."
  96   (let (points)
  97     (when (file-readable-p "/etc/fstab")
  98       (with-temp-buffer
  99         (insert-file-contents-literally "/etc/fstab")
 100         (while (not (eobp))
 101           (let* ((line (buffer-substring (point) (line-end-position)))
 102                  (args (split-string line "\\s-+")))
 103             (setq points (cons (nth 1 args) points)))
 104           (forward-line)))
 105       (pcomplete-pare-list
 106        (pcomplete-uniqify-list points)
 107        (cons "swap" (pcmpl-linux-mounted-directories))))))
 108
 109 ;;; arch-tag: bb0961a6-a623-463d-92c6-497c317293b1
 110 ;;; pcmpl-linux.el ends here