/
org-buffers.el
602 lines (533 loc) · 21.2 KB
/
org-buffers.el
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
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
;;; org-buffers.el --- An Org-mode tool for buffer management
;; Copyright (C) 2010 Dan Davison
;; Author: Dan Davison <dandavison7 at gmail dot com>
;; Keywords: outlines, hypermedia, calendar, wp
;; Homepage: http://orgmode.org
;;; License:
;; This program 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 3, or (at your option)
;; any later version.
;;
;; This program 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, Inc., 51 Franklin Street, Fifth Floor,
;; Boston, MA 02110-1301, USA.
;;; Commentary:
;;; Code:
(require 'org)
(require 'cl)
;;; Variables
(defvar org-buffers-buffer-name
"*Buffers*"
"Name of buffer in which buffer list is displayed")
(defvar org-buffers-state
'((:by . "major-mode") (:atom . heading) (:properties . nil))
"Association list specifying the current state of org-buffers.")
(defvar org-buffers-follow-link-method 'current-window
"Method used to follow link with RET. Must be one of
'current-window :: use switch-to-buffer, as with dired,
list-buffers, ibuffer, etc
'org-open-at-point :: use `org-open-at-point', as with other links in org-mode
'other-window :: use switch-to-buffer-other-window
See also the functions `org-buffers-switch-to-buffer' and
`org-buffers-switch-to-buffer-other-window'.")
(defvar org-buffers-buffer-properties
'(("buffer-name" . (buffer-name))
("major-mode" . (let ((mode (symbol-name major-mode)))
(if (string-match "-mode$" mode)
(replace-match "" nil t mode) mode)))
("buffer-file-name" . (buffer-file-name))
("default-directory" . default-directory)
("buffer-modified-p" . (format "%s" (buffer-modified-p))))
"Association list specifying properties to be stored for each
buffer. The car of each element is the name of the property, and
the cdr is an expression which, when evaluated in the buffer,
yields the property value.")
(defgroup org-buffers nil
"Options for customising `org-buffers-mode'"
:tag "Org-buffers Mode"
:group 'org)
(defcustom org-buffers-switch-to-buffer-function 'switch-to-buffer
"Function to use to display the listing buffer. Typical choices
for this variable include either switch-to-buffer or
pop-to-buffer."
:group 'org-buffers
:type 'function)
(defcustom org-buffers-columns-format
(mapconcat 'identity
'("%15buffer-name(Buffer)"
"%15major-mode(Mode)"
"%20default-directory(Dir)"
"%5buffer-modified-p(Modified)") " ")
"Format for columns when viewing buffers listing in columns
view. See `org-columns-default-format'."
:group 'org-buffers
:type 'string)
(defcustom org-buffers-excluded-buffers
`("*Completions*" ,org-buffers-buffer-name)
"List of names of buffers that should not be listed by
org-buffers-list."
:group 'org-buffers
:type 'sexp)
(defcustom org-buffers-excluded-modes nil
"List of names of major-modes (strings) that should not be listed
by org-buffers-list."
:group 'org-buffers)
;;; Mode
(defvar org-buffers-mode-map (make-sparse-keymap))
(defvar org-buffers-mode-hook nil
"Hook for functions to be called after buffer listing is
created. Note that the buffer is read-only, so if the hook
function is to modify the buffer it should use a let binding to
temporarily bind inhibit-read-only to a non-nil value.")
(define-minor-mode org-buffers-mode
"An Org-mode tool for buffer management.
In addition to the following org-buffers commands, all the
commands listed in `org-speed-commands-default' are available.
\\{org-buffers-mode-map}"
nil " buffers" nil
(org-set-local 'org-tag-alist '(("delete" . ?d)))
(org-set-local'org-tags-column -50)
(org-set-local 'org-columns-default-format org-buffers-columns-format)
(org-set-local 'org-use-speed-commands (lambda () buffer-read-only))
(add-hook 'kill-buffer-hook 'org-buffers-reset-state nil 'local))
(defun org-buffers-help ()
(interactive)
(describe-function 'org-buffers-mode))
;;; Keys
(define-key org-buffers-mode-map "\C-x\C-f" 'org-buffers-find-file)
(define-key org-buffers-mode-map "\C-xd" 'org-buffers-dired)
(define-key org-buffers-mode-map "B" 'org-buffers-list:by)
(define-key org-buffers-mode-map "T" 'org-buffers-columns-view)
(define-key org-buffers-mode-map "d" 'org-buffers-tag-for-deletion)
(define-key org-buffers-mode-map "g" 'org-buffers-list:refresh)
(define-key org-buffers-mode-map "H" 'org-buffers-toggle-headings)
(define-key org-buffers-mode-map "P" 'org-buffers-toggle-properties)
(define-key org-buffers-mode-map "q" 'bury-buffer)
(define-key org-buffers-mode-map "r" 'org-buffers-tag-for-reversion)
(define-key org-buffers-mode-map "u" 'org-buffers-remove-tags)
(define-key org-buffers-mode-map "x" 'org-buffers-execute-pending-operations)
(define-key org-buffers-mode-map " " 'org-buffers-show-and-scroll-up)
(define-key org-buffers-mode-map [(return)] 'org-buffers-follow-link)
(define-key org-buffers-mode-map "?" 'org-buffers-help)
;;; Listing and view cycling
(defun org-buffers-list (&optional refresh frame)
"Create an Org-mode listing of Emacs buffers.
By default, buffers are grouped by major mode. With a prefix
argument, update the listing before display. Optional argument
FRAME specifies the frame whose buffers should be listed."
(interactive "P")
(funcall
org-buffers-switch-to-buffer-function
(or
(and (not refresh) (get-buffer org-buffers-buffer-name))
(let ((org-buffers-p (equal (buffer-name) org-buffers-buffer-name))
(by (or (org-buffers-state-get :by) "major-mode"))
(atom (org-buffers-state-get :atom)) target)
(if (and org-buffers-p (org-before-first-heading-p) (not (org-on-heading-p)))
(outline-next-heading))
(setq target
(condition-case nil
(org-make-org-heading-search-string (if (not org-buffers-p) (buffer-name)))
(error nil)))
(with-current-buffer (get-buffer-create org-buffers-buffer-name)
(setq buffer-read-only nil)
(erase-buffer)
(org-mode)
(dolist
(buffer
(sort (remove-if 'org-buffers-exclude-p
(mapcar 'buffer-name (buffer-list frame))) 'string<))
(org-insert-heading t)
(insert
(org-make-link-string (concat "buffer:" buffer) buffer) "\n")
(dolist (pair (org-buffers-get-buffer-props buffer))
(org-set-property (car pair) (cdr pair))))
(org-buffers-set-state '((:atom . heading)))
(goto-char (point-min))
(unless (equal by "NONE") (org-buffers-group-by by))
(if (and target (condition-case nil (org-link-search target) (error nil)))
(beginning-of-line)
(goto-char (point-min))
(outline-next-heading))
(if (equal by "NONE")
(org-overview)
(case atom
('heading (progn (org-overview) (org-content)))
('line (progn (show-all) (org-buffers-toggle-headings)))))
(save-excursion
(mark-whole-buffer)
(indent-region (point-min) (point-max)))
(org-buffers-mode)
(setq buffer-read-only t)
(current-buffer))))))
(defun org-buffers-list:refresh (&optional arg)
"Refresh org-buffers listing."
(interactive "P")
(if arg (org-buffers-reset-state))
(org-buffers-list 'refresh))
(defun org-buffers-list:by (&optional prop)
"Group buffers according to value of property PROP."
(interactive)
(let ((inhibit-read-only t)
(headings-p (org-buffers-state-eq :atom 'heading)))
(unless (org-buffers-state-get :properties)
(org-buffers-toggle-properties))
(org-buffers-set-state
`((:by .
,(or prop
(org-completing-read
"Property to group by: "
(cons "NONE" (mapcar 'car org-buffers-buffer-properties)))))))
(org-buffers-list 'refresh)
(unless headings-p (org-buffers-toggle-headings))))
(defun org-buffers-toggle-properties ()
"Toggle entry properties in org-buffers listing buffer.
Removing properties may provide a less cluttered appearance for
browsing. However, in-buffer properties will be restored during
certain operations, such as `org-buffers-list:by'."
(interactive)
(if (org-buffers-state-get :properties)
(progn (org-buffers-delete-properties)
(show-all)
(org-buffers-set-state '((:properties . nil))))
(org-buffers-set-state
'((:atom . heading) (:properties . t)))
(org-buffers-list 'refresh)))
(defun org-buffers-toggle-headings ()
"Toggle viewing of buffers as org headings.
Headings will be automatically restored during certain
operations, such as setting deletion tags."
(interactive)
(let ((inhibit-read-only t)
(headings-p (org-buffers-state-eq :atom 'heading))
(flat-p (org-buffers-state-eq :by "NONE")))
(if (and headings-p (org-buffers-state-get :properties))
(org-buffers-toggle-properties))
(save-excursion
(goto-char (point-min))
(if (and (or headings-p (not flat-p))
(not (outline-on-heading-p)))
(outline-next-heading))
(if flat-p
(progn
(push-mark (point) 'nomsg 'activate)
(goto-char (point-max))
(org-ctrl-c-star)
(pop-mark))
(while (not (eobp))
(push-mark
(save-excursion (forward-line 1) (point)) 'nomsg 'activate)
(org-forward-same-level 1)
(org-ctrl-c-star)
(pop-mark)))
(mark-whole-buffer)
(indent-region (point-min) (point-max)))
(org-buffers-set-state
`((:atom . ,(if headings-p 'line 'heading))))))
(defun org-buffers-delete-properties ()
(let ((inhibit-read-only t))
(save-excursion
(goto-char (point-min))
(org-buffers-delete-regions
(nreverse
(delq nil
(org-buffers-map-entries 'org-buffers-get-property-block)))))))
(defun org-buffers-get-property-block ()
"Return the (beg . end) range of the property drawer.
Unlike the org version the limits include the keywords delimiting
the drawer."
(let ((beg (point))
(end (progn (outline-next-heading) (point))))
(goto-char beg)
(if (re-search-forward org-property-drawer-re end t)
(cons (match-beginning 1) (match-end 0)))))
(defun org-buffers-group-by (property)
"Group top level headings according to the value of PROPERTY."
(let ((atom (org-buffers-state-get :atom)))
(save-excursion
(goto-char (point-min))
(mapc (lambda (subtree) ;; Create subtree for each value of `property'
(org-insert-heading t)
(if (> (save-excursion (beginning-of-line) (org-outline-level)) 1)
(org-promote))
(insert (car subtree) "\n")
(org-insert-subheading t)
(mapc 'org-buffers-insert-parsed-entry (cdr subtree)))
(prog1
(mapcar (lambda (val) ;; Form list of parsed entries for each unique value of `property'
(cons val (org-buffers-parse-selected-entries property val)))
(sort
(delete-dups (org-buffers-map-entries (lambda () (org-entry-get nil property nil))))
'string<))
(erase-buffer))))))
(defun org-buffers-exclude-p (buffer)
"Return non-nil if BUFFER should not be listed."
(or (member (with-current-buffer buffer major-mode)
org-buffers-excluded-modes)
(member buffer org-buffers-excluded-buffers)
(string= (substring buffer 0 1) " ")))
(defun org-buffers-reset-state ()
(org-buffers-set-state
'((:by . "major-mode") (:atom . heading) (:properties . nil))))
(defun org-buffers-columns-view ()
"View buffers in Org-mode columns view.
This is currently experimental. RET can be used to follow links
in the first column, but certain other org-buffers keys conflict
with column-view or otherwise do not work correctly."
(interactive)
(let ((inhibit-read-only t))
(unless (org-buffers-state-get :properties)
(org-buffers-toggle-properties))
(save-excursion
(goto-char (point-min))
(org-columns))))
;;; Parsing and inserting entries
(defun org-buffers-parse-selected-entries (prop val)
"Parse all entries with property PROP value VAL."
(delq nil
(org-buffers-map-entries
(lambda () (when (equal (org-entry-get nil prop) val)
(cons (org-get-heading) (org-get-entry)))))))
(defun org-buffers-insert-parsed-entry (entry)
"Insert a parsed entry"
(unless (org-at-heading-p) (org-insert-heading))
(insert (car entry) "\n")
(if (org-buffers-state-get :properties)
(insert (cdr entry))))
(defun org-buffers-get-buffer-props (buffer)
"Create alist of properties of BUFFER, as strings."
(with-current-buffer buffer
(mapcar
(lambda (pair) (cons (car pair) (eval (cdr pair))))
org-buffers-buffer-properties)))
;;; Follow-link behaviour
(defun org-buffers-follow-link ()
"Follow link to buffer on this line.
The buffer-switching behaviour of this function is determined by
the variable `org-buffers-follow-link-method'. See also
`org-buffers-switch-to-buffer' and
`org-buffers-switch-to-buffer-other-window', whose behaviour is
hard-wired."
(interactive)
(org-buffers-switch-to-buffer-generic org-buffers-follow-link-method))
(defun org-buffers-switch-to-buffer ()
"Switch to this entry's buffer in current window."
(interactive)
(org-buffers-switch-to-buffer-generic 'current-window))
(defun org-buffers-switch-to-buffer-other-window ()
"Switch to this entry's buffer in other window."
(interactive)
(org-buffers-switch-to-buffer-generic 'other-window))
(defvar org-buffers-show-window nil)
(defun org-buffers-show-and-scroll-up ()
"Display the buffer linked to on the current line.
When called repeatedly, scroll the window that is displaying the
buffer, advancing to next on reaching end."
;; Code descended from `org-agenda-show-and-scroll-up'
(interactive)
(let ((win (selected-window)) window-end)
(if (and (window-live-p org-buffers-show-window)
(eq this-command last-command))
(progn
(select-window org-buffers-show-window)
(setq window-end (window-end))
(ignore-errors (scroll-up))
(redisplay)
(when (eq (window-end) window-end)
(select-window win)
(org-buffers-next-buffer)
(setq this-command 'emulate-first-call)
(org-buffers-show-and-scroll-up)))
(org-buffers-switch-to-buffer-generic 'other-window)
(setq org-buffers-show-window (selected-window)))
(select-window win)))
(defun org-buffers-switch-to-buffer-generic (method)
(save-excursion
(let ((atom (org-buffers-state-get :atom)) buffer)
(cond
((eq atom 'heading) (org-back-to-heading))
(t (beginning-of-line)))
(if (setq buffer (org-buffers-get-buffer-name))
(if (get-buffer buffer)
(case method
('org-open-at-point (org-open-at-point))
('current-window (switch-to-buffer buffer))
('other-window (switch-to-buffer-other-window buffer))
('display (display-buffer buffer)))
(error "No such buffer: %s" buffer))))))
(defun org-buffers-get-buffer-name ()
"Get buffer-name for current entry."
(let ((headings-p (org-buffers-state-eq :atom 'heading)))
(or (and headings-p (org-entry-get nil "buffer-name"))
(and (save-excursion
(if headings-p (org-back-to-heading))
(re-search-forward "\\[\\[buffer:\\([^\]]*\\)" (point-at-eol) t))
(org-buffers-clean-text-properties
(org-link-unescape (match-string 1)))))))
;;; Remote commands
(defun org-buffers-call-remotely (fun)
"Call FUN from the directory of the current line's buffer."
(let* ((buffer (org-buffers-get-buffer-name))
(default-directory
(if buffer
(with-current-buffer (get-buffer buffer) default-directory)
default-directory)))
(call-interactively (or (command-remapping fun) fun))))
(defun org-buffers-find-file ()
(interactive)
(org-buffers-call-remotely 'find-file))
(defun org-buffers-dired ()
(interactive)
(org-buffers-call-remotely 'dired))
;;; Setting tags and executing operations
(defun org-buffers-tag-for-deletion ()
"Mark buffer for deletion.
If a region is selected, all buffers in the region are marked for
deletion. Buffers marked for deletion can be deleted using
`org-buffers-execute-pending-operations'."
(interactive)
(org-buffers-set-tags '("delete")))
(defun org-buffers-tag-for-reversion ()
"Mark buffer to be reverted to the underlying file.
If a region is selected, all buffers in the region are
marked. Buffers marked for reversioon can be reverted using
`org-buffers-execute-pending-operations'."
(interactive)
(org-buffers-set-tags '("revert")))
(defun org-buffers-remove-tags ()
"Remove deletion marks from buffers.
If a region is selected, marks are removed from all buffers in
the region."
(interactive)
(org-buffers-set-tags nil))
(defun org-buffers-set-tags (data)
"Set tags to DATA at all non top-level headings in region.
DATA should be a list of strings. If DATA is nil, remove all tags
at such headings."
(let* ((inhibit-read-only t)
(region-p (org-region-active-p))
(beg (if region-p (region-beginning) (point)))
(end (if region-p (region-end) (point)))
(headings-p (org-buffers-state-eq :atom 'heading))
beg-line end-line end-of-last-heading)
(save-excursion
(setq beg-line (progn (goto-char beg) (org-current-line))
end-line (progn (goto-char end) (org-current-line))
end-of-last-heading (progn (outline-end-of-heading) (point)))
(if headings-p
(setq end (if (and region-p (not (eq end-line beg-line)) (not (eq end end-of-last-heading)))
(progn (goto-char end) (org-back-to-heading) (point))
end-of-last-heading)
beg (progn (goto-char beg) (point-at-bol)))
(org-buffers-toggle-headings) ;; doesn't alter line numbers
(setq beg (progn (org-goto-line beg-line) (point-at-bol))
end (if (eq end-line beg-line) (point-at-eol)
(progn (org-goto-line end-line) (point-at-bol)))))
(narrow-to-region beg end)
(goto-char (point-min))
(org-buffers-map-entries
(lambda ()
(when (or (org-buffers-state-eq :by "NONE")
(> (org-outline-level) 1))
(org-set-tags-to
(if data (delete-duplicates (append data (org-get-tags)) :test 'string-equal))))))
(widen)
(org-content))
(unless region-p (org-buffers-next-buffer))
(unless headings-p (org-buffers-toggle-headings))))
(defun org-buffers-execute-pending-operations ()
"Execute all pending operations."
(interactive)
(let ((inhibit-read-only t)
(headings-p (org-buffers-state-eq :atom 'heading)) buffer)
(unless headings-p (org-buffers-toggle-headings))
(org-buffers-execute-pending-reversions)
(org-buffers-execute-pending-deletions)
(unless headings-p (org-buffers-toggle-headings))))
(defun org-buffers-execute-pending-deletions ()
"Delete buffers marked for deletion.
Buffers are tagged for deletion using
`org-buffers-tag-for-deletion'. Remove such tags from buffers
using `org-buffers-remove-tags'."
(if (org-buffers-delete-regions
(nreverse
(delq nil
(org-buffers-map-entries
(lambda ()
(and (setq buffer (org-buffers-get-buffer-name))
(or (kill-buffer buffer)
(progn (message "Did not kill buffer %s" buffer)
nil))
(cons (point) (1+ (org-end-of-subtree)))))
"+delete"))))
(org-buffers-delete-regions ;; Clear out any headings left without children.
(nreverse
(delq nil
(org-buffers-map-entries
(lambda () (if (and (eq (org-outline-level) 1)
(eq (point-at-eol) (org-end-of-subtree)))
(cons (point-at-bol) (1+ (point)))))))))))
(defun org-buffers-execute-pending-reversions ()
"Revert buffers marked for reversion.
Buffers are tagged for reversion using
`org-buffers-tag-for-reversion'. Tags can be removed using
`org-buffers-remove-tags'."
(let (buffer)
(org-buffers-map-entries
(lambda ()
(when (setq buffer (get-buffer (org-buffers-get-buffer-name)))
(if (with-current-buffer buffer (revert-buffer))
(org-set-tags-to nil))))
"+revert")))
;;; Utilities
(defun org-buffers-map-entries (func &optional match)
(org-scan-tags
func (if match (cdr (org-make-tags-matcher match)) t)))
(defun org-buffers-set-state (state)
"Add STATE to global state list.
New settings have precedence over existing ones."
(mapc
(lambda (pair) (unless (assoc (car pair) state)
(add-to-list 'state pair)))
org-buffers-state)
(setq org-buffers-state state))
(defun org-buffers-delete-regions (regions)
"Delete regions in list.
REGIONS is a list of (beg . end) cons cells specifying buffer
regions."
(mapc (lambda (pair) (delete-region (car pair) (cdr pair)))
regions))
(defun org-buffers-state-get (key)
(cdr (assoc key org-buffers-state)))
(defun org-buffers-state-eq (key val)
(equal (org-buffers-state-get key) val))
(defun org-buffers-next-buffer ()
"Advance to next line with buffer link"
(while
(and (outline-next-heading)
(not (or (> (org-outline-level) 1)
(org-buffers-state-eq :by "NONE"))))))
(defun org-buffers-clean-text-properties (text)
(set-text-properties 0 (length text) nil text) text)
;;; Links to buffers
(org-add-link-type "buffer" 'display-buffer)
(add-hook 'org-store-link-functions 'org-buffers-store-link)
(defun org-buffers-store-link (&optional force)
"Store a link to an Emacs buffer.
Returns nil by default, to avoid hijacking other link types."
(if force
(let* ((target (buffer-name))
(desc target) link)
(org-store-link-props :type "buffer")
(setq link (org-make-link "buffer:" target))
(org-add-link-props :link link :description desc)
link)))
(provide 'org-buffers)
;;; org-buffers.el ends here