lisp/pcmpl-unix.el

   1 ;;; pcmpl-unix.el --- standard UNIX completions
   2
   3 ;; Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004,
   4 ;;   2005, 2006, 2007 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 2, 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 ;;; Code:
  26
  27 (provide 'pcmpl-unix)
  28
  29 (require 'pcomplete)
  30
  31 ;; User Variables:
  32
  33 (defcustom pcmpl-unix-group-file "/etc/group"
  34   "*If non-nil, a string naming the group file on your system."
  35   :type 'file
  36   :group 'pcmpl-unix)
  37
  38 (defcustom pcmpl-unix-passwd-file "/etc/passwd"
  39   "*If non-nil, a string naming the passwd file on your system."
  40   :type 'file
  41   :group 'pcmpl-unix)
  42
  43 ;; Functions:
  44
  45 ;;;###autoload
  46 (defun pcomplete/cd ()
  47   "Completion for `cd'."
  48   (pcomplete-here (pcomplete-dirs)))
  49
  50 ;;;###autoload
  51 (defalias 'pcomplete/pushd 'pcomplete/cd)
  52
  53 ;;;###autoload
  54 (defun pcomplete/rmdir ()
  55   "Completion for `rmdir'."
  56   (while (pcomplete-here (pcomplete-dirs))))
  57
  58 ;;;###autoload
  59 (defun pcomplete/rm ()
  60   "Completion for `rm'."
  61   (let ((pcomplete-help "(fileutils)rm invocation"))
  62     (pcomplete-opt "dfirRv")
  63     (while (pcomplete-here (pcomplete-all-entries) nil
  64                            'expand-file-name))))
  65
  66 ;;;###autoload
  67 (defun pcomplete/xargs ()
  68   "Completion for `xargs'."
  69   (pcomplete-here (funcall pcomplete-command-completion-function))
  70   (funcall (or (pcomplete-find-completion-function (pcomplete-arg 1))
  71                pcomplete-default-completion-function)))
  72
  73 ;;;###autoload
  74 (defalias 'pcomplete/time 'pcomplete/xargs)
  75
  76 ;;;###autoload
  77 (defun pcomplete/which ()
  78   "Completion for `which'."
  79   (while (pcomplete-here (funcall pcomplete-command-completion-function))))
  80
  81 (defun pcmpl-unix-read-passwd-file (file)
  82   "Return an alist correlating gids to group names in FILE."
  83   (let (names)
  84     (when (file-readable-p file)
  85       (with-temp-buffer
  86         (insert-file-contents file)
  87         (goto-char (point-min))
  88         (while (not (eobp))
  89           (let* ((fields
  90                   (split-string (buffer-substring
  91                                  (point) (progn (end-of-line)
  92                                                 (point))) ":")))
  93             (setq names (cons (nth 0 fields) names)))
  94           (forward-line))))
  95     (pcomplete-uniqify-list names)))
  96
  97 (defsubst pcmpl-unix-group-names ()
  98   "Read the contents of /etc/group for group names."
  99   (if pcmpl-unix-group-file
 100       (pcmpl-unix-read-passwd-file pcmpl-unix-group-file)))
 101
 102 (defsubst pcmpl-unix-user-names ()
 103   "Read the contents of /etc/passwd for user names."
 104   (if pcmpl-unix-passwd-file
 105       (pcmpl-unix-read-passwd-file pcmpl-unix-passwd-file)))
 106
 107 ;;;###autoload
 108 (defun pcomplete/chown ()
 109   "Completion for the `chown' command."
 110   (unless (pcomplete-match "\\`-")
 111     (if (pcomplete-match "\\`[^.]*\\'" 0)
 112         (pcomplete-here* (pcmpl-unix-user-names))
 113       (if (pcomplete-match "\\.\\([^.]*\\)\\'" 0)
 114           (pcomplete-here* (pcmpl-unix-group-names)
 115                            (pcomplete-match-string 1 0))
 116         (pcomplete-here*))))
 117   (while (pcomplete-here (pcomplete-entries))))
 118
 119 ;;;###autoload
 120 (defun pcomplete/chgrp ()
 121   "Completion for the `chgrp' command."
 122   (unless (pcomplete-match "\\`-")
 123     (pcomplete-here* (pcmpl-unix-group-names)))
 124   (while (pcomplete-here (pcomplete-entries))))
 125
 126 ;;; arch-tag: 3f9eb5af-7e0e-449d-b586-381cbbf8fc5c
 127 ;;; pcmpl-unix.el ends here