1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
|
;;;; dired-lisp.el - emulate ls completely in Emacs Lisp. $Revision: 1.2 $
;;;; Copyright (C) 1991 Sebastian Kremer <sk@thp.uni-koeln.de>
;;;; READ THE WARNING BELOW BEFORE USING THIS PROGRAM!
;;;; Useful if you cannot afford to fork Emacs on a real memory UNIX,
;;;; under VMS, or if you don't have the ls program.
;; This file is part of GNU Emacs.
;; GNU Emacs is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation; either version 1, or (at your option)
;; any later version.
;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs; see the file COPYING. If not, write to
;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
;;;; WARNING:
;;;; Sometimes I get an internal Emacs error:
;;;; Signalling: (wrong-type-argument natnump #<EMACS BUG: ILLEGAL
;;;; DATATYPE (#o37777777727) Save your buffers immediately and please
;;;; report this bug>)
;;;; Sometimes emacs just crashes with a fatal error.
;;; RESTRICTIONS:
;;;; Always sorts by name (ls switches are completely ignored for now)
;;;; Cannot display date of file, displays a fake date "Jan 00 00:00" instead
;;;; Only numeric uid/gid
;;;; Loading ange-ftp breaks it
;;;; It is surprisingly fast, though!
;;;; TODO:
;;;; Recognize at least some ls switches: l R g F i
(require 'dired) ; we will redefine this function:
(defun dired-ls (file &optional switches wildcard full-directory-p)
"dired-lisp.el's version of dired-ls."
; "Insert ls output of FILE, optionally formatted with SWITCHES.
;Optional third arg WILDCARD means treat FILE as shell wildcard.
;Optional fourth arg FULL-DIRECTORY-P means file is a directory and
;switches do not contain `d'.
;
;SWITCHES default to dired-listing-switches."
(or switches (setq switches dired-listing-switches))
(if wildcard
(error "Cannot handle wildcards in lisp emulation of `ls'."))
(if full-directory-p
(let* ((dir (file-name-as-directory file))
(start (length dir))
(sum 0))
(insert "total \007\n") ; fill in afterwards
(insert
(mapconcat
(function (lambda (short)
(let* ((fil (concat dir short))
(attr (file-attributes fil))
(size (nth 7 attr)))
;;(debug)
(setq sum (+ sum size))
(dired-lisp-format
;;(file-name-nondirectory fil)
;;(dired-make-relative fil dir)
;;(substring fil start)
short
attr
switches))))
(directory-files dir)
""))
(save-excursion
(search-backward "total \007")
(goto-char (match-end 0))
(delete-char -1)
(insert (format "%d" sum)))
)
;; if not full-directory-p, FILE *must not* end in /, as
;; file-attributes will not recognize a symlink to a directory
;; must make it a relative filename as ls does:
(setq file (file-name-nondirectory file))
(insert (dired-lisp-format file (file-attributes file) switches)))
)
(defun dired-lisp-format (file-name file-attr &optional switches)
(let ((file-type (nth 0 file-attr)))
(concat (nth 8 file-attr) ; permission bits
" "
(dired-lisp-pad (nth 1 file-attr) -3) ; no. of links
;; numeric uid/gid are more confusing than helpful
;; Emacs should be able to make strings of them
" " (dired-lisp-pad (nth 2 file-attr) -6) ; uid
" " (dired-lisp-pad (nth 3 file-attr) -6) ; gid
" "
(dired-lisp-pad (nth 7 file-attr) -8) ; size in bytes
;; file-attributes's time is in a braindead format
;; Emacs should have a ctime function
" " "Jan 00 00:00 " ; fake time
file-name
(if (stringp file-type) ; is a symbolic link
(concat " -> " file-type)
"")
"\n"
)))
;; format should really do anything printf can!!
(defun dired-lisp-pad (arg width &optional pad-char)
"Pad ARG to WIDTH, from left if WIDTH < 0.
Non-nil third arg optional PAD-CHAR defaults to a space."
(or pad-char (setq pad-char ?\040))
(if (integerp arg)
(setq arg (int-to-string arg)))
(let (l pad reverse)
(if (< width 0)
(setq reverse t
width (- width)))
(setq l (length arg)
pad (- width l))
(if (> pad 0)
(if reverse
(concat (make-string pad pad-char) arg)
(concat arg (make-string pad pad-char)))
arg)))
|
