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affbf647 GM |
1 | ;;; em-ls --- implementation of ls in Lisp |
2 | ||
faadfb0a | 3 | ;; Copyright (C) 1999, 2000 Free Software Foundation |
affbf647 | 4 | |
7de5b421 GM |
5 | ;; Author: John Wiegley <johnw@gnu.org> |
6 | ||
affbf647 GM |
7 | ;; This file is part of GNU Emacs. |
8 | ||
9 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
10 | ;; it under the terms of the GNU General Public License as published by | |
11 | ;; the Free Software Foundation; either version 2, or (at your option) | |
12 | ;; any later version. | |
13 | ||
14 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
15 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | ;; GNU General Public License for more details. | |
18 | ||
19 | ;; You should have received a copy of the GNU General Public License | |
20 | ;; along with GNU Emacs; see the file COPYING. If not, write to the | |
21 | ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
22 | ;; Boston, MA 02111-1307, USA. | |
23 | ||
24 | (provide 'em-ls) | |
25 | ||
26 | (eval-when-compile (require 'esh-maint)) | |
27 | ||
28 | (defgroup eshell-ls nil | |
29 | "This module implements the \"ls\" utility fully in Lisp. If it is | |
30 | passed any unrecognized command switches, it will revert to the | |
31 | operating system's version. This version of \"ls\" uses text | |
32 | properties to colorize its output based on the setting of | |
33 | `eshell-ls-use-colors'." | |
34 | :tag "Implementation of `ls' in Lisp" | |
35 | :group 'eshell-module) | |
36 | ||
37 | ;;; Commentary: | |
38 | ||
39 | ;; Most of the command switches recognized by GNU's ls utility are | |
40 | ;; supported ([(fileutils)ls invocation]). | |
41 | ||
42 | (require 'esh-util) | |
43 | (require 'esh-opt) | |
44 | ||
45 | ;;; User Variables: | |
46 | ||
47 | (defvar eshell-ls-orig-insert-directory | |
48 | (symbol-function 'insert-directory) | |
49 | "Preserve the original definition of `insert-directory'.") | |
50 | ||
51 | (defcustom eshell-ls-unload-hook | |
52 | (list | |
53 | (function | |
54 | (lambda () | |
55 | (fset 'insert-directory eshell-ls-orig-insert-directory)))) | |
56 | "*When unloading `eshell-ls', restore the definition of `insert-directory'." | |
57 | :type 'hook | |
58 | :group 'eshell-ls) | |
59 | ||
60 | (defcustom eshell-ls-use-in-dired nil | |
61 | "*If non-nil, use `eshell-ls' to read directories in dired." | |
62 | :set (lambda (symbol value) | |
63 | (if value | |
64 | (unless (and (boundp 'eshell-ls-use-in-dired) | |
65 | eshell-ls-use-in-dired) | |
66 | (fset 'insert-directory 'eshell-ls-insert-directory)) | |
67 | (when (and (boundp 'eshell-ls-insert-directory) | |
68 | eshell-ls-use-in-dired) | |
69 | (fset 'insert-directory eshell-ls-orig-insert-directory))) | |
70 | (setq eshell-ls-use-in-dired value)) | |
71 | :type 'boolean | |
72 | :require 'em-ls | |
73 | :group 'eshell-ls) | |
74 | ||
75 | (defcustom eshell-ls-default-blocksize 1024 | |
76 | "*The default blocksize to use when display file sizes with -s." | |
77 | :type 'integer | |
78 | :group 'eshell-ls) | |
79 | ||
80 | (defcustom eshell-ls-exclude-regexp "\\`\\." | |
81 | "*Unless -a is specified, files matching this regexp will not be shown." | |
82 | :type 'regexp | |
83 | :group 'eshell-ls) | |
84 | ||
85 | (defcustom eshell-ls-use-colors t | |
86 | "*If non-nil, use colors in file listings." | |
87 | :type 'boolean | |
88 | :group 'eshell-ls) | |
89 | ||
90 | (defface eshell-ls-directory-face | |
91 | '((((class color) (background light)) (:foreground "Blue" :bold t)) | |
92 | (((class color) (background dark)) (:foreground "SkyBlue" :bold t)) | |
93 | (t (:bold t))) | |
94 | "*The face used for highlight directories." | |
95 | :group 'eshell-ls) | |
96 | ||
97 | (defface eshell-ls-symlink-face | |
98 | '((((class color) (background light)) (:foreground "Dark Cyan" :bold t)) | |
99 | (((class color) (background dark)) (:foreground "Cyan" :bold t))) | |
100 | "*The face used for highlight symbolic links." | |
101 | :group 'eshell-ls) | |
102 | ||
103 | (defface eshell-ls-executable-face | |
104 | '((((class color) (background light)) (:foreground "ForestGreen" :bold t)) | |
105 | (((class color) (background dark)) (:foreground "Green" :bold t))) | |
106 | "*The face used for highlighting executables (not directories, though)." | |
107 | :group 'eshell-ls) | |
108 | ||
109 | (defface eshell-ls-readonly-face | |
110 | '((((class color) (background light)) (:foreground "Brown")) | |
111 | (((class color) (background dark)) (:foreground "Pink"))) | |
112 | "*The face used for highlighting read-only files." | |
113 | :group 'eshell-ls) | |
114 | ||
115 | (defface eshell-ls-unreadable-face | |
116 | '((((class color) (background light)) (:foreground "Grey30")) | |
117 | (((class color) (background dark)) (:foreground "DarkGrey"))) | |
118 | "*The face used for highlighting unreadable files." | |
119 | :group 'eshell-ls) | |
120 | ||
121 | (defface eshell-ls-special-face | |
122 | '((((class color) (background light)) (:foreground "Magenta" :bold t)) | |
123 | (((class color) (background dark)) (:foreground "Magenta" :bold t))) | |
124 | "*The face used for highlighting non-regular files." | |
125 | :group 'eshell-ls) | |
126 | ||
127 | (defface eshell-ls-missing-face | |
128 | '((((class color) (background light)) (:foreground "Red" :bold t)) | |
129 | (((class color) (background dark)) (:foreground "Red" :bold t))) | |
130 | "*The face used for highlighting non-existant file names." | |
131 | :group 'eshell-ls) | |
132 | ||
133 | (defcustom eshell-ls-archive-regexp | |
134 | (concat "\\.\\(t\\(a[rz]\\|gz\\)\\|arj\\|lzh\\|" | |
135 | "zip\\|[zZ]\\|gz\\|bz2\\|deb\\|rpm\\)\\'") | |
136 | "*A regular expression that matches names of file archives. | |
137 | This typically includes both traditional archives and compressed | |
138 | files." | |
139 | :type 'regexp | |
140 | :group 'eshell-ls) | |
141 | ||
142 | (defface eshell-ls-archive-face | |
143 | '((((class color) (background light)) (:foreground "Orchid" :bold t)) | |
144 | (((class color) (background dark)) (:foreground "Orchid" :bold t))) | |
145 | "*The face used for highlighting archived and compressed file names." | |
146 | :group 'eshell-ls) | |
147 | ||
148 | (defcustom eshell-ls-backup-regexp | |
149 | "\\(\\`\\.?#\\|\\(\\.bak\\|~\\)\\'\\)" | |
150 | "*A regular expression that matches names of backup files." | |
151 | :type 'regexp | |
152 | :group 'eshell-ls) | |
153 | ||
154 | (defface eshell-ls-backup-face | |
155 | '((((class color) (background light)) (:foreground "OrangeRed")) | |
156 | (((class color) (background dark)) (:foreground "LightSalmon"))) | |
157 | "*The face used for highlighting backup file names." | |
158 | :group 'eshell-ls) | |
159 | ||
160 | (defcustom eshell-ls-product-regexp | |
161 | "\\.\\(elc\\|o\\(bj\\)?\\|a\\||lib\\|res\\)\\'" | |
162 | "*A regular expression that matches names of product files. | |
163 | Products are files that get generated from a source file, and hence | |
164 | ought to be recreatable if they are deleted." | |
165 | :type 'regexp | |
166 | :group 'eshell-ls) | |
167 | ||
168 | (defface eshell-ls-product-face | |
169 | '((((class color) (background light)) (:foreground "OrangeRed")) | |
170 | (((class color) (background dark)) (:foreground "LightSalmon"))) | |
171 | "*The face used for highlighting files that are build products." | |
172 | :group 'eshell-ls) | |
173 | ||
174 | (defcustom eshell-ls-clutter-regexp | |
175 | "\\(^texput\\.log\\|^core\\)\\'" | |
176 | "*A regular expression that matches names of junk files. | |
177 | These are mainly files that get created for various reasons, but don't | |
178 | really need to stick around for very long." | |
179 | :type 'regexp | |
180 | :group 'eshell-ls) | |
181 | ||
182 | (defface eshell-ls-clutter-face | |
183 | '((((class color) (background light)) (:foreground "OrangeRed" :bold t)) | |
184 | (((class color) (background dark)) (:foreground "OrangeRed" :bold t))) | |
185 | "*The face used for highlighting junk file names." | |
186 | :group 'eshell-ls) | |
187 | ||
188 | (defsubst eshell-ls-filetype-p (attrs type) | |
189 | "Test whether ATTRS specifies a directory." | |
190 | (if (nth 8 attrs) | |
191 | (eq (aref (nth 8 attrs) 0) type))) | |
192 | ||
193 | (defmacro eshell-ls-applicable (attrs index func file) | |
194 | "Test whether, for ATTRS, the user UID can do what corresponds to INDEX. | |
195 | This is really just for efficiency, to avoid having to stat the file | |
196 | yet again." | |
8c6b1d83 JW |
197 | `(if (numberp (nth 2 ,attrs)) |
198 | (if (= (user-uid) (nth 2 ,attrs)) | |
199 | (not (eq (aref (nth 8 ,attrs) ,index) ?-)) | |
200 | (,(eval func) ,file)) | |
201 | (not (eq (aref (nth 8 ,attrs) | |
202 | (+ ,index (if (member (nth 2 ,attrs) | |
203 | (eshell-current-ange-uids)) | |
204 | 0 6))) | |
205 | ?-)))) | |
affbf647 GM |
206 | |
207 | (defcustom eshell-ls-highlight-alist nil | |
208 | "*This alist correlates test functions to color. | |
209 | The format of the members of this alist is | |
210 | ||
211 | (TEST-SEXP . FACE) | |
212 | ||
213 | If TEST-SEXP evals to non-nil, that face will be used to highlight the | |
214 | name of the file. The first match wins. `file' and `attrs' are in | |
215 | scope during the evaluation of TEST-SEXP." | |
216 | :type '(repeat (cons function face)) | |
217 | :group 'eshell-ls) | |
218 | ||
219 | ;;; Functions: | |
220 | ||
221 | (defun eshell-ls-insert-directory | |
222 | (file switches &optional wildcard full-directory-p) | |
223 | "Insert directory listing for FILE, formatted according to SWITCHES. | |
224 | Leaves point after the inserted text. | |
225 | SWITCHES may be a string of options, or a list of strings. | |
226 | Optional third arg WILDCARD means treat FILE as shell wildcard. | |
227 | Optional fourth arg FULL-DIRECTORY-P means file is a directory and | |
228 | switches do not contain `d', so that a full listing is expected. | |
229 | ||
230 | This version of the function uses `eshell/ls'. If any of the switches | |
231 | passed are not recognized, the operating system's version will be used | |
232 | instead." | |
233 | (let ((handler (find-file-name-handler file 'insert-directory))) | |
234 | (if handler | |
235 | (funcall handler 'insert-directory file switches | |
236 | wildcard full-directory-p) | |
237 | (if (stringp switches) | |
238 | (setq switches (split-string switches))) | |
239 | (let (eshell-current-handles | |
240 | eshell-current-subjob-p) | |
241 | ;; use the fancy highlighting in `eshell-ls' rather than font-lock | |
242 | (when (and eshell-ls-use-colors | |
243 | (featurep 'font-lock)) | |
244 | (font-lock-mode -1) | |
245 | (if (boundp 'font-lock-buffers) | |
246 | (set 'font-lock-buffers | |
247 | (delq (current-buffer) | |
248 | (symbol-value 'font-lock-buffers))))) | |
249 | (let ((insert-func 'insert) | |
250 | (error-func 'insert) | |
251 | (flush-func 'ignore)) | |
252 | (eshell-do-ls (append switches (list file)))))))) | |
253 | ||
254 | (defsubst eshell/ls (&rest args) | |
255 | "An alias version of `eshell-do-ls'." | |
256 | (let ((insert-func 'eshell-buffered-print) | |
257 | (error-func 'eshell-error) | |
258 | (flush-func 'eshell-flush)) | |
259 | (eshell-do-ls args))) | |
260 | ||
261 | (eval-when-compile | |
262 | (defvar block-size) | |
263 | (defvar dereference-links) | |
264 | (defvar dir-literal) | |
265 | (defvar error-func) | |
266 | (defvar flush-func) | |
267 | (defvar human-readable) | |
268 | (defvar ignore-pattern) | |
269 | (defvar insert-func) | |
270 | (defvar listing-style) | |
271 | (defvar numeric-uid-gid) | |
272 | (defvar reverse-list) | |
273 | (defvar show-all) | |
274 | (defvar show-recursive) | |
275 | (defvar show-size) | |
8c6b1d83 JW |
276 | (defvar sort-method) |
277 | (defvar ange-cache)) | |
affbf647 GM |
278 | |
279 | (defun eshell-do-ls (&rest args) | |
280 | "Implementation of \"ls\" in Lisp, passing ARGS." | |
281 | (funcall flush-func -1) | |
282 | ;; process the command arguments, and begin listing files | |
283 | (eshell-eval-using-options | |
284 | "ls" args | |
285 | `((?a "all" nil show-all | |
286 | "show all files in directory") | |
287 | (?c nil by-ctime sort-method | |
288 | "sort by modification time") | |
289 | (?d "directory" nil dir-literal | |
290 | "list directory entries instead of contents") | |
291 | (?k "kilobytes" 1024 block-size | |
292 | "using 1024 as the block size") | |
293 | (?h "human-readable" 1024 human-readable | |
294 | "print sizes in human readable format") | |
295 | (?H "si" 1000 human-readable | |
296 | "likewise, but use powers of 1000 not 1024") | |
297 | (?I "ignore" t ignore-pattern | |
298 | "do not list implied entries matching pattern") | |
299 | (?l nil long-listing listing-style | |
300 | "use a long listing format") | |
301 | (?n "numeric-uid-gid" nil numeric-uid-gid | |
302 | "list numeric UIDs and GIDs instead of names") | |
303 | (?r "reverse" nil reverse-list | |
304 | "reverse order while sorting") | |
305 | (?s "size" nil show-size | |
306 | "print size of each file, in blocks") | |
307 | (?t nil by-mtime sort-method | |
308 | "sort by modification time") | |
309 | (?u nil by-atime sort-method | |
310 | "sort by last access time") | |
311 | (?x nil by-lines listing-style | |
312 | "list entries by lines instead of by columns") | |
313 | (?C nil by-columns listing-style | |
314 | "list entries by columns") | |
315 | (?L "deference" nil dereference-links | |
316 | "list entries pointed to by symbolic links") | |
317 | (?R "recursive" nil show-recursive | |
318 | "list subdirectories recursively") | |
319 | (?S nil by-size sort-method | |
320 | "sort by file size") | |
321 | (?U nil unsorted sort-method | |
322 | "do not sort; list entries in directory order") | |
323 | (?X nil by-extension sort-method | |
324 | "sort alphabetically by entry extension") | |
325 | (?1 nil single-column listing-style | |
326 | "list one file per line") | |
327 | (nil "help" nil nil | |
328 | "show this usage display") | |
329 | :external "ls" | |
330 | :usage "[OPTION]... [FILE]... | |
331 | List information about the FILEs (the current directory by default). | |
332 | Sort entries alphabetically across.") | |
333 | ;; setup some defaults, based on what the user selected | |
334 | (unless block-size | |
335 | (setq block-size eshell-ls-default-blocksize)) | |
336 | (unless listing-style | |
337 | (setq listing-style 'by-columns)) | |
338 | (unless args | |
339 | (setq args (list "."))) | |
8c6b1d83 | 340 | (let ((eshell-ls-exclude-regexp eshell-ls-exclude-regexp) ange-cache) |
affbf647 GM |
341 | (when ignore-pattern |
342 | (unless (eshell-using-module 'eshell-glob) | |
343 | (error (concat "-I option requires that `eshell-glob'" | |
344 | " be a member of `eshell-modules-list'"))) | |
345 | (set-text-properties 0 (length ignore-pattern) nil ignore-pattern) | |
346 | (if eshell-ls-exclude-regexp | |
347 | (setq eshell-ls-exclude-regexp | |
348 | (concat "\\(" eshell-ls-exclude-regexp "\\|" | |
349 | (eshell-glob-regexp ignore-pattern) "\\)")) | |
350 | (setq eshell-ls-exclude-regexp (eshell-glob-regexp ignore-pattern)))) | |
351 | ;; list the files! | |
352 | (eshell-ls-entries | |
353 | (mapcar (function | |
354 | (lambda (arg) | |
355 | (cons (if (and (eshell-under-windows-p) | |
356 | (file-name-absolute-p arg)) | |
357 | (expand-file-name arg) | |
358 | arg) | |
8c6b1d83 | 359 | (eshell-file-attributes arg)))) args) |
affbf647 GM |
360 | t (expand-file-name default-directory))) |
361 | (funcall flush-func))) | |
362 | ||
363 | (defsubst eshell-ls-printable-size (filesize &optional by-blocksize) | |
364 | "Return a printable FILESIZE." | |
365 | (eshell-printable-size filesize human-readable | |
366 | (and by-blocksize block-size) | |
367 | eshell-ls-use-colors)) | |
368 | ||
369 | (defsubst eshell-ls-size-string (attrs size-width) | |
370 | "Return the size string for ATTRS length, using SIZE-WIDTH." | |
371 | (let* ((str (eshell-ls-printable-size (nth 7 attrs) t)) | |
372 | (len (length str))) | |
373 | (if (< len size-width) | |
374 | (concat (make-string (- size-width len) ? ) str) | |
375 | str))) | |
376 | ||
377 | (defun eshell-ls-annotate (fileinfo) | |
378 | "Given a FILEINFO object, return a resolved, decorated FILEINFO. | |
379 | This means resolving any symbolic links, determining what face the | |
380 | name should be displayed as, etc. Think of it as cooking a FILEINFO." | |
381 | (if (not (and (stringp (cadr fileinfo)) | |
382 | (or dereference-links | |
383 | (eq listing-style 'long-listing)))) | |
384 | (setcar fileinfo (eshell-ls-decorated-name fileinfo)) | |
385 | (let (dir attr) | |
386 | (unless (file-name-absolute-p (cadr fileinfo)) | |
387 | (setq dir (file-truename | |
388 | (file-name-directory | |
389 | (expand-file-name (car fileinfo)))))) | |
390 | (setq attr | |
8c6b1d83 | 391 | (eshell-file-attributes |
affbf647 GM |
392 | (let ((target (if dir |
393 | (expand-file-name (cadr fileinfo) dir) | |
394 | (cadr fileinfo)))) | |
395 | (if dereference-links | |
396 | (file-truename target) | |
397 | target)))) | |
398 | (if (or dereference-links | |
399 | (string-match "^\\.\\.?$" (car fileinfo))) | |
400 | (progn | |
401 | (setcdr fileinfo attr) | |
402 | (setcar fileinfo (eshell-ls-decorated-name fileinfo))) | |
403 | (assert (eq listing-style 'long-listing)) | |
404 | (setcar fileinfo | |
405 | (concat (eshell-ls-decorated-name fileinfo) " -> " | |
406 | (eshell-ls-decorated-name | |
407 | (cons (cadr fileinfo) attr))))))) | |
408 | fileinfo) | |
409 | ||
410 | (defun eshell-ls-file (fileinfo &optional size-width copy-fileinfo) | |
411 | "Output FILE in long format. | |
412 | FILE may be a string, or a cons cell whose car is the filename and | |
413 | whose cdr is the list of file attributes." | |
414 | (if (not (cdr fileinfo)) | |
415 | (funcall error-func (format "%s: No such file or directory\n" | |
416 | (car fileinfo))) | |
417 | (setq fileinfo | |
418 | (eshell-ls-annotate (if copy-fileinfo | |
419 | (cons (car fileinfo) | |
420 | (cdr fileinfo)) | |
421 | fileinfo))) | |
422 | (let ((file (car fileinfo)) | |
423 | (attrs (cdr fileinfo))) | |
424 | (if (not (eq listing-style 'long-listing)) | |
425 | (if show-size | |
426 | (funcall insert-func (eshell-ls-size-string attrs size-width) | |
427 | " " file "\n") | |
428 | (funcall insert-func file "\n")) | |
429 | (let ((line | |
430 | (concat | |
431 | (if show-size | |
432 | (concat (eshell-ls-size-string attrs size-width) " ")) | |
433 | (format | |
434 | "%s%4d %-8s %-8s " | |
435 | (or (nth 8 attrs) "??????????") | |
436 | (or (nth 1 attrs) 0) | |
8c6b1d83 JW |
437 | (or (let ((user (nth 2 attrs))) |
438 | (and (not numeric-uid-gid) | |
439 | user | |
440 | (eshell-substring | |
441 | (if (numberp user) | |
442 | (user-login-name user) | |
443 | user) 8))) | |
affbf647 GM |
444 | (nth 2 attrs) |
445 | "") | |
8c6b1d83 JW |
446 | (or (let ((group (nth 3 attrs))) |
447 | (and (not numeric-uid-gid) | |
448 | group | |
449 | (eshell-substring | |
450 | (if (numberp group) | |
451 | (eshell-group-name group) | |
452 | group) 8))) | |
affbf647 GM |
453 | (nth 3 attrs) |
454 | "")) | |
455 | (let* ((str (eshell-ls-printable-size (nth 7 attrs))) | |
456 | (len (length str))) | |
457 | (if (< len 8) | |
458 | (concat (make-string (- 8 len) ? ) str) | |
459 | str)) | |
460 | " " (format-time-string | |
461 | (concat | |
462 | "%b %e " | |
463 | (if (= (nth 5 (decode-time (current-time))) | |
464 | (nth 5 (decode-time | |
465 | (nth (cond | |
466 | ((eq sort-method 'by-atime) 4) | |
467 | ((eq sort-method 'by-ctime) 6) | |
468 | (t 5)) attrs)))) | |
469 | "%H:%M" | |
470 | " %Y")) (nth (cond | |
471 | ((eq sort-method 'by-atime) 4) | |
472 | ((eq sort-method 'by-ctime) 6) | |
473 | (t 5)) attrs)) " "))) | |
474 | (funcall insert-func line file "\n")))))) | |
475 | ||
476 | (defun eshell-ls-dir (dirinfo &optional insert-name root-dir size-width) | |
477 | "Output the entries in DIRINFO. | |
478 | If INSERT-NAME is non-nil, the name of DIRINFO will be output. If | |
479 | ROOT-DIR is also non-nil, and a directory name, DIRINFO will be output | |
480 | relative to that directory." | |
481 | (let ((dir (car dirinfo))) | |
482 | (if (not (cdr dirinfo)) | |
483 | (funcall error-func (format "%s: No such file or directory\n" dir)) | |
484 | (if dir-literal | |
485 | (eshell-ls-file dirinfo size-width) | |
486 | (if insert-name | |
487 | (funcall insert-func | |
488 | (eshell-ls-decorated-name | |
489 | (cons (concat | |
490 | (if root-dir | |
491 | (file-relative-name dir root-dir) | |
492 | (expand-file-name dir))) | |
493 | (cdr dirinfo))) ":\n")) | |
494 | (let ((entries | |
495 | (eshell-directory-files-and-attributes dir nil nil t))) | |
496 | (unless show-all | |
497 | (while (and entries | |
498 | (string-match eshell-ls-exclude-regexp | |
499 | (caar entries))) | |
500 | (setq entries (cdr entries))) | |
501 | (let ((e entries)) | |
502 | (while (cdr e) | |
503 | (if (string-match eshell-ls-exclude-regexp (car (cadr e))) | |
504 | (setcdr e (cddr e)) | |
505 | (setq e (cdr e)))))) | |
506 | (when (or (eq listing-style 'long-listing) show-size) | |
507 | (let ((total 0.0)) | |
508 | (setq size-width 0) | |
509 | (eshell-for e entries | |
510 | (if (nth 7 (cdr e)) | |
511 | (setq total (+ total (nth 7 (cdr e))) | |
512 | size-width | |
513 | (max size-width | |
514 | (length (eshell-ls-printable-size | |
515 | (nth 7 (cdr e)) t)))))) | |
516 | (funcall insert-func "total " | |
517 | (eshell-ls-printable-size total t) "\n"))) | |
518 | (let ((default-directory (expand-file-name dir))) | |
519 | (if show-recursive | |
520 | (eshell-ls-entries | |
521 | (let ((e entries) (good-entries (list t))) | |
522 | (while e | |
523 | (unless (let ((len (length (caar e)))) | |
524 | (and (eq (aref (caar e) 0) ?.) | |
525 | (or (= len 1) | |
526 | (and (= len 2) | |
527 | (eq (aref (caar e) 1) ?.))))) | |
528 | (nconc good-entries (list (car e)))) | |
529 | (setq e (cdr e))) | |
530 | (cdr good-entries)) | |
531 | nil root-dir) | |
532 | (eshell-ls-files (eshell-ls-sort-entries entries) | |
533 | size-width)))))))) | |
534 | ||
535 | (defsubst eshell-ls-compare-entries (l r inx func) | |
536 | "Compare the time of two files, L and R, the attribute indexed by INX." | |
537 | (let ((lt (nth inx (cdr l))) | |
538 | (rt (nth inx (cdr r)))) | |
539 | (if (equal lt rt) | |
540 | (string-lessp (directory-file-name (car l)) | |
541 | (directory-file-name (car r))) | |
542 | (funcall func rt lt)))) | |
543 | ||
544 | (defun eshell-ls-sort-entries (entries) | |
545 | "Sort the given ENTRIES, which may be files, directories or both. | |
546 | In Eshell's implementation of ls, ENTRIES is always reversed." | |
547 | (if (eq sort-method 'unsorted) | |
548 | (nreverse entries) | |
549 | (sort entries | |
550 | (function | |
551 | (lambda (l r) | |
552 | (let ((result | |
553 | (cond | |
554 | ((eq sort-method 'by-atime) | |
555 | (eshell-ls-compare-entries | |
556 | l r 4 'eshell-time-less-p)) | |
557 | ((eq sort-method 'by-mtime) | |
558 | (eshell-ls-compare-entries | |
559 | l r 5 'eshell-time-less-p)) | |
560 | ((eq sort-method 'by-ctime) | |
561 | (eshell-ls-compare-entries | |
562 | l r 6 'eshell-time-less-p)) | |
563 | ((eq sort-method 'by-size) | |
564 | (eshell-ls-compare-entries | |
565 | l r 7 '<)) | |
566 | ((eq sort-method 'by-extension) | |
567 | (let ((lx (file-name-extension | |
568 | (directory-file-name (car l)))) | |
569 | (rx (file-name-extension | |
570 | (directory-file-name (car r))))) | |
571 | (cond | |
572 | ((or (and (not lx) (not rx)) | |
573 | (equal lx rx)) | |
574 | (string-lessp (directory-file-name (car l)) | |
575 | (directory-file-name (car r)))) | |
576 | ((not lx) t) | |
577 | ((not rx) nil) | |
578 | (t | |
579 | (string-lessp lx rx))))) | |
580 | (t | |
581 | (string-lessp (directory-file-name (car l)) | |
582 | (directory-file-name (car r))))))) | |
583 | (if reverse-list | |
584 | (not result) | |
585 | result))))))) | |
586 | ||
587 | (defun eshell-ls-files (files &optional size-width copy-fileinfo) | |
588 | "Output a list of FILES. | |
589 | Each member of FILES is either a string or a cons cell of the form | |
590 | \(FILE . ATTRS)." | |
591 | (if (memq listing-style '(long-listing single-column)) | |
592 | (eshell-for file files | |
593 | (if file | |
594 | (eshell-ls-file file size-width copy-fileinfo))) | |
595 | (let ((f files) | |
596 | last-f | |
597 | display-files | |
598 | ignore) | |
599 | (while f | |
600 | (if (cdar f) | |
601 | (setq last-f f | |
602 | f (cdr f)) | |
603 | (unless ignore | |
604 | (funcall error-func | |
605 | (format "%s: No such file or directory\n" (caar f)))) | |
606 | (if (eq f files) | |
607 | (setq files (cdr files) | |
608 | f files) | |
609 | (if (not (cdr f)) | |
610 | (progn | |
611 | (setcdr last-f nil) | |
612 | (setq f nil)) | |
613 | (setcar f (cadr f)) | |
614 | (setcdr f (cddr f)))))) | |
615 | (if (not show-size) | |
616 | (setq display-files (mapcar 'eshell-ls-annotate files)) | |
617 | (eshell-for file files | |
618 | (let* ((str (eshell-ls-printable-size (nth 7 (cdr file)) t)) | |
619 | (len (length str))) | |
620 | (if (< len size-width) | |
621 | (setq str (concat (make-string (- size-width len) ? ) str))) | |
622 | (setq file (eshell-ls-annotate file) | |
623 | display-files (cons (cons (concat str " " (car file)) | |
624 | (cdr file)) | |
625 | display-files)))) | |
626 | (setq display-files (nreverse display-files))) | |
627 | (let* ((col-vals | |
628 | (if (eq listing-style 'by-columns) | |
629 | (eshell-ls-find-column-lengths display-files) | |
630 | (assert (eq listing-style 'by-lines)) | |
631 | (eshell-ls-find-column-widths display-files))) | |
632 | (col-widths (car col-vals)) | |
633 | (display-files (cdr col-vals)) | |
634 | (columns (length col-widths)) | |
635 | (col-index 1) | |
636 | need-return) | |
637 | (eshell-for file display-files | |
638 | (let ((name | |
639 | (if (car file) | |
640 | (if show-size | |
641 | (concat (substring (car file) 0 size-width) | |
642 | (eshell-ls-decorated-name | |
643 | (cons (substring (car file) size-width) | |
644 | (cdr file)))) | |
645 | (eshell-ls-decorated-name file)) | |
646 | ""))) | |
647 | (if (< col-index columns) | |
648 | (setq need-return | |
649 | (concat need-return name | |
650 | (make-string | |
651 | (max 0 (- (aref col-widths | |
652 | (1- col-index)) | |
653 | (length name))) ? )) | |
654 | col-index (1+ col-index)) | |
655 | (funcall insert-func need-return name "\n") | |
656 | (setq col-index 1 need-return nil)))) | |
657 | (if need-return | |
658 | (funcall insert-func need-return "\n")))))) | |
659 | ||
660 | (defun eshell-ls-entries (entries &optional separate root-dir) | |
661 | "Output PATH's directory ENTRIES, formatted according to OPTIONS. | |
662 | Each member of ENTRIES may either be a string or a cons cell, the car | |
663 | of which is the file name, and the cdr of which is the list of | |
664 | attributes. | |
665 | If SEPARATE is non-nil, directories name will be entirely separated | |
666 | from the filenames. This is the normal behavior, except when doing a | |
667 | recursive listing. | |
668 | ROOT-DIR, if non-nil, specifies the root directory of the listing, to | |
669 | which non-absolute directory names will be made relative if ever they | |
670 | need to be printed." | |
671 | (let (dirs files show-names need-return (size-width 0)) | |
672 | (eshell-for entry entries | |
673 | (if (and (not dir-literal) | |
674 | (or (eshell-ls-filetype-p (cdr entry) ?d) | |
675 | (and (eshell-ls-filetype-p (cdr entry) ?l) | |
676 | (file-directory-p (car entry))))) | |
677 | (progn | |
678 | (unless separate | |
679 | (setq files (cons entry files) | |
680 | size-width | |
681 | (if show-size | |
682 | (max size-width | |
683 | (length (eshell-ls-printable-size | |
684 | (nth 7 (cdr entry)) t)))))) | |
685 | (setq dirs (cons entry dirs))) | |
686 | (setq files (cons entry files) | |
687 | size-width | |
688 | (if show-size | |
689 | (max size-width | |
690 | (length (eshell-ls-printable-size | |
691 | (nth 7 (cdr entry)) t))))))) | |
692 | (when files | |
693 | (eshell-ls-files (eshell-ls-sort-entries files) | |
694 | size-width show-recursive) | |
695 | (setq need-return t)) | |
696 | (setq show-names (or show-recursive | |
697 | (> (+ (length files) (length dirs)) 1))) | |
698 | (eshell-for dir (eshell-ls-sort-entries dirs) | |
699 | (if (and need-return (not dir-literal)) | |
700 | (funcall insert-func "\n")) | |
701 | (eshell-ls-dir dir show-names | |
702 | (unless (file-name-absolute-p (car dir)) | |
703 | root-dir) size-width) | |
704 | (setq need-return t)))) | |
705 | ||
706 | (defun eshell-ls-find-column-widths (files) | |
707 | "Find the best fitting column widths for FILES. | |
708 | It will be returned as a vector, whose length is the number of columns | |
709 | to use, and each member of which is the width of that column | |
710 | \(including spacing)." | |
711 | (let* ((numcols 0) | |
712 | (width 0) | |
713 | (widths | |
714 | (mapcar | |
715 | (function | |
716 | (lambda (file) | |
717 | (+ 2 (length (car file))))) | |
718 | files)) | |
719 | ;; must account for the added space... | |
720 | (max-width (+ (window-width) 2)) | |
721 | (best-width 0) | |
722 | col-widths) | |
723 | ||
724 | ;; determine the largest number of columns in the first row | |
725 | (let ((w widths)) | |
726 | (while (and w (< width max-width)) | |
727 | (setq width (+ width (car w)) | |
728 | numcols (1+ numcols) | |
729 | w (cdr w)))) | |
730 | ||
731 | ;; refine it based on the following rows | |
732 | (while (> numcols 0) | |
733 | (let ((i 0) | |
734 | (colw (make-vector numcols 0)) | |
735 | (w widths)) | |
736 | (while w | |
737 | (if (= i numcols) | |
738 | (setq i 0)) | |
739 | (aset colw i (max (aref colw i) (car w))) | |
740 | (setq w (cdr w) i (1+ i))) | |
741 | (setq i 0 width 0) | |
742 | (while (< i numcols) | |
743 | (setq width (+ width (aref colw i)) | |
744 | i (1+ i))) | |
745 | (if (and (< width max-width) | |
746 | (> width best-width)) | |
747 | (setq col-widths colw | |
748 | best-width width))) | |
749 | (setq numcols (1- numcols))) | |
750 | ||
751 | (cons (or col-widths (vector max-width)) files))) | |
752 | ||
753 | (defun eshell-ls-find-column-lengths (files) | |
754 | "Find the best fitting column lengths for FILES. | |
755 | It will be returned as a vector, whose length is the number of columns | |
756 | to use, and each member of which is the width of that column | |
757 | \(including spacing)." | |
758 | (let* ((numcols 1) | |
759 | (width 0) | |
760 | (widths | |
761 | (mapcar | |
762 | (function | |
763 | (lambda (file) | |
764 | (+ 2 (length (car file))))) | |
765 | files)) | |
766 | (max-width (+ (window-width) 2)) | |
767 | col-widths | |
768 | colw) | |
769 | ||
770 | ;; refine it based on the following rows | |
771 | (while numcols | |
772 | (let* ((rows (ceiling (/ (length widths) | |
773 | (float numcols)))) | |
774 | (w widths) | |
775 | (len (* rows numcols)) | |
776 | (index 0) | |
777 | (i 0)) | |
778 | (setq width 0) | |
779 | (unless (or (= rows 0) | |
780 | (<= (/ (length widths) (float rows)) | |
781 | (float (1- numcols)))) | |
782 | (setq colw (make-vector numcols 0)) | |
783 | (while (> len 0) | |
784 | (if (= i numcols) | |
785 | (setq i 0 index (1+ index))) | |
786 | (aset colw i | |
787 | (max (aref colw i) | |
788 | (or (nth (+ (* i rows) index) w) 0))) | |
789 | (setq len (1- len) i (1+ i))) | |
790 | (setq i 0) | |
791 | (while (< i numcols) | |
792 | (setq width (+ width (aref colw i)) | |
793 | i (1+ i)))) | |
794 | (if (>= width max-width) | |
795 | (setq numcols nil) | |
796 | (if colw | |
797 | (setq col-widths colw)) | |
798 | (if (>= numcols (length widths)) | |
799 | (setq numcols nil) | |
800 | (setq numcols (1+ numcols)))))) | |
801 | ||
802 | (if (not col-widths) | |
803 | (cons (vector max-width) files) | |
804 | (setq numcols (length col-widths)) | |
805 | (let* ((rows (ceiling (/ (length widths) | |
806 | (float numcols)))) | |
807 | (len (* rows numcols)) | |
808 | (newfiles (make-list len nil)) | |
809 | (index 0) | |
810 | (i 0) | |
811 | (j 0)) | |
812 | (while (< j len) | |
813 | (if (= i numcols) | |
814 | (setq i 0 index (1+ index))) | |
815 | (setcar (nthcdr j newfiles) | |
816 | (nth (+ (* i rows) index) files)) | |
817 | (setq j (1+ j) i (1+ i))) | |
818 | (cons col-widths newfiles))))) | |
819 | ||
820 | (defun eshell-ls-decorated-name (file) | |
821 | "Return FILE, possibly decorated. | |
822 | Use TRUENAME for predicate tests, if passed." | |
823 | (if eshell-ls-use-colors | |
824 | (let ((face | |
825 | (cond | |
826 | ((not (cdr file)) | |
827 | 'eshell-ls-missing-face) | |
828 | ||
829 | ((stringp (cadr file)) | |
830 | 'eshell-ls-symlink-face) | |
831 | ||
832 | ((eq (cadr file) t) | |
833 | 'eshell-ls-directory-face) | |
834 | ||
835 | ((not (eshell-ls-filetype-p (cdr file) ?-)) | |
836 | 'eshell-ls-special-face) | |
837 | ||
ca7aae91 | 838 | ((and (/= (user-uid) 0) ; root can execute anything |
affbf647 GM |
839 | (eshell-ls-applicable (cdr file) 3 |
840 | 'file-executable-p (car file))) | |
841 | 'eshell-ls-executable-face) | |
842 | ||
843 | ((not (eshell-ls-applicable (cdr file) 1 | |
844 | 'file-readable-p (car file))) | |
845 | 'eshell-ls-unreadable-face) | |
846 | ||
847 | ((string-match eshell-ls-archive-regexp (car file)) | |
848 | 'eshell-ls-archive-face) | |
849 | ||
850 | ((string-match eshell-ls-backup-regexp (car file)) | |
851 | 'eshell-ls-backup-face) | |
852 | ||
853 | ((string-match eshell-ls-product-regexp (car file)) | |
854 | 'eshell-ls-product-face) | |
855 | ||
856 | ((string-match eshell-ls-clutter-regexp (car file)) | |
857 | 'eshell-ls-clutter-face) | |
858 | ||
859 | ((not (eshell-ls-applicable (cdr file) 2 | |
860 | 'file-writable-p (car file))) | |
861 | 'eshell-ls-readonly-face) | |
862 | (eshell-ls-highlight-alist | |
863 | (let ((tests eshell-ls-highlight-alist) | |
864 | value) | |
865 | (while tests | |
866 | (if (funcall (caar tests) (car file) (cdr file)) | |
867 | (setq value (cdar tests) tests nil) | |
868 | (setq tests (cdr tests)))) | |
869 | value))))) | |
870 | (if face | |
871 | (add-text-properties 0 (length (car file)) | |
872 | (list 'face face) | |
873 | (car file))))) | |
874 | (car file)) | |
875 | ||
876 | ;;; Code: | |
877 | ||
878 | ;;; em-ls.el ends here |