lisp/pcmpl-unix.el

   1 ;;; pcmpl-unix --- standard UNIX 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 ;;; Code:
  23
  24 (provide 'pcmpl-unix)
  25
  26 (require 'pcomplete)
  27
  28 ;; User Variables:
  29
  30 (defcustom pcmpl-unix-group-file "/etc/group"
  31   "*If non-nil, a string naming the group file on your system."
  32   :type 'file
  33   :group 'pcmpl-unix)
  34
  35 (defcustom pcmpl-unix-passwd-file "/etc/passwd"
  36   "*If non-nil, a string naming the passwd file on your system."
  37   :type 'file
  38   :group 'pcmpl-unix)
  39
  40 ;; Functions:
  41
  42 ;;;###autoload
  43 (defun pcomplete/cd ()
  44   "Completion for `cd'."
  45   (pcomplete-here (pcomplete-dirs)))
  46
  47 ;;;###autoload
  48 (defalias 'pcomplete/pushd 'pcomplete/cd)
  49
  50 ;;;###autoload
  51 (defun pcomplete/rmdir ()
  52   "Completion for `rmdir'."
  53   (while (pcomplete-here (pcomplete-dirs))))
  54
  55 ;;;###autoload
  56 (defun pcomplete/rm ()
  57   "Completion for `rm'."
  58   (let ((pcomplete-help "(fileutils)rm invocation"))
  59     (pcomplete-opt "dfirRv")
  60     (while (pcomplete-here (pcomplete-all-entries) nil
  61                            'expand-file-name))))
  62
  63 ;;;###autoload
  64 (defun pcomplete/xargs ()
  65   "Completion for `xargs'."
  66   (pcomplete-here (funcall pcomplete-command-completion-function))
  67   (funcall (or (pcomplete-find-completion-function (pcomplete-arg 1))
  68                pcomplete-default-completion-function)))
  69
  70 ;;;###autoload
  71 (defalias 'pcomplete/time 'pcomplete/xargs)
  72
  73 ;;;###autoload
  74 (defun pcomplete/which ()
  75   "Completion for `which'."
  76   (while (pcomplete-here (funcall pcomplete-command-completion-function))))
  77
  78 (defun pcmpl-unix-read-passwd-file (file)
  79   "Return an alist correlating gids to group names in FILE."
  80   (let (names)
  81     (when (file-readable-p file)
  82       (with-temp-buffer
  83         (insert-file-contents file)
  84         (goto-char (point-min))
  85         (while (not (eobp))
  86           (let* ((fields
  87                   (split-string (buffer-substring
  88                                  (point) (progn (end-of-line)
  89                                                 (point))) ":")))
  90             (setq names (cons (nth 0 fields) names)))
  91           (forward-line))))
  92     (pcomplete-uniqify-list names)))
  93
  94 (defsubst pcmpl-unix-group-names ()
  95   "Read the contents of /etc/group for group names."
  96   (if pcmpl-unix-group-file
  97       (pcmpl-unix-read-passwd-file pcmpl-unix-group-file)))
  98
  99 (defsubst pcmpl-unix-user-names ()
 100   "Read the contents of /etc/passwd for user names."
 101   (if pcmpl-unix-passwd-file
 102       (pcmpl-unix-read-passwd-file pcmpl-unix-passwd-file)))
 103
 104 ;;;###autoload
 105 (defun pcomplete/chown ()
 106   "Completion for the `chown' command."
 107   (unless (pcomplete-match "\\`-")
 108     (if (pcomplete-match "\\`[^.]*\\'" 0)
 109         (pcomplete-here* (pcmpl-unix-user-names))
 110       (if (pcomplete-match "\\.\\([^.]*\\)\\'" 0)
 111           (pcomplete-here* (pcmpl-unix-group-names)
 112                            (pcomplete-match-string 1 0))
 113         (pcomplete-here*))))
 114   (while (pcomplete-here (pcomplete-entries))))
 115
 116 ;;;###autoload
 117 (defun pcomplete/chgrp ()
 118   "Completion for the `chgrp' command."
 119   (unless (pcomplete-match "\\`-")
 120     (pcomplete-here* (pcmpl-unix-group-names)))
 121   (while (pcomplete-here (pcomplete-entries))))
 122
 123 ;;; pcmpl-unix.el ends here