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
128