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
|
;;; informat.el --- info support functions package for Emacs -*- lexical-binding: t; -*-
;; Copyright (C) 1986, 2001-2025 Free Software Foundation, Inc.
;; Maintainer: emacs-devel@gnu.org
;; Keywords: help
;; 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 3 of the License, 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. If not, see <https://www.gnu.org/licenses/>.
;;; Commentary:
;; Nowadays, the Texinfo formatting commands always tagify a buffer
;; (as does `makeinfo') since @anchor commands need tag tables.
;;; Code:
(require 'info)
(declare-function texinfo-format-refill "texinfmt" ())
;; From texinfmt.el
(defvar texinfo-command-start)
(defvar texinfo-command-end)
;;;###autoload
(defun Info-tagify (&optional input-buffer-name)
"Create or update Info file tag table in current buffer or in a region."
(interactive)
;; Save and restore point and restrictions.
;; save-restrictions would not work
;; because it records the old max relative to the end.
;; We record it relative to the beginning.
(let ((omin (point-min))
(omax (point-max))
(nomax (= (point-max) (1+ (buffer-size))))
(opoint (point))
(msg (format "Tagifying %s..."
(cond (input-buffer-name
(format "region in %s" input-buffer-name))
(buffer-file-name
(file-name-nondirectory (buffer-file-name)))
(t "buffer")))))
(message "%s" msg)
(unwind-protect
(progn
(widen)
(goto-char (point-min))
(if (search-forward "\^_\nIndirect:\n" nil t)
(message
"Cannot tagify split info file. Run this before splitting.")
(let (tag-list
refillp
(case-fold-search t)
(regexp
(concat
"\\("
"\\("
"@anchor" ; match-string 2 matches @anchor
"\\)"
"\\(-no\\|-yes\\)" ; match-string 3 matches -no or -yes
"\\("
"-refill"
"\\)"
"\\("
"{"
"\\)"
"\\("
"[^}]+" ; match-string 6 matches arg to anchor
"\\)"
"\\("
"}"
"\\)"
"\\|"
"\\("
"\n\^_\\(\^L\\)?"
"\\)"
"\\("
"\n\\(File:[ \t]*\\([^,\n\t]*\\)[,\t\n]+[ \t\n]*\\)?"
"Node:[ \t]*"
"\\("
"[^,\n\t]*" ; match-string 13 matches arg to node name
"\\)"
"[,\t\n]"
"\\)"
"\\)"
)))
(while (re-search-forward regexp nil t)
(if (string-equal "@anchor" (match-string 2))
(progn
;; kludge lest lose match-data
(if (string-equal "-yes" (match-string 3))
(setq refillp t))
(setq tag-list
(cons (list
(concat "Ref: " (match-string 6))
(match-beginning 0))
tag-list))
(if (eq refillp t)
;; set start and end so texinfo-format-refill works
(let ((texinfo-command-start (match-beginning 0))
(texinfo-command-end (match-end 0)))
(texinfo-format-refill))
(delete-region (match-beginning 0) (match-end 0))))
;; else this is a Node
(setq tag-list
(cons (list
(concat "Node: " (match-string-no-properties 13))
(1+ (match-beginning 10)))
tag-list))))
(goto-char (point-max))
(forward-line -8)
(let ((buffer-read-only nil))
(if (search-forward "\^_\nEnd tag table\n" nil t)
(let ((end (point)))
(search-backward "\nTag table:\n")
(beginning-of-line)
(delete-region (point) end)))
(goto-char (point-max))
(or (bolp)
(newline))
(insert "\^_\f\nTag table:\n")
(if (derived-mode-p 'info-mode)
(move-marker Info-tag-table-marker (point)))
(setq tag-list (nreverse tag-list))
(while tag-list
(insert (car (car tag-list)) ?\177)
(princ (car (cdr (car tag-list))) (current-buffer))
(insert ?\n)
(setq tag-list (cdr tag-list)))
(insert "\^_\nEnd tag table\n")))))
(goto-char opoint)
(narrow-to-region omin (if nomax (1+ (buffer-size))
(min omax (point-max)))))
(message "%sdone" msg)))
;;;###autoload
(defcustom Info-split-threshold 262144
"The number of characters by which `Info-split' splits an info file."
:type 'natnum
:version "23.1"
:group 'texinfo)
;;;###autoload
(defun Info-split ()
"Split an info file into an indirect file plus bounded-size subfiles.
Each subfile will be up to the number of characters that
`Info-split-threshold' specifies, plus one node.
To use this command, first visit a large Info file that has a tag
table. The buffer is modified into a (small) indirect info file which
should be saved in place of the original visited file.
The subfiles are written in the same directory the original file is
in, with names generated by appending `-' and a number to the original
file name. The indirect file still functions as an Info file, but it
contains just the tag table and a directory of subfiles."
(interactive)
(if (< (buffer-size) (+ 20000 Info-split-threshold))
(error "This is too small to be worth splitting"))
(goto-char (point-min))
(search-forward "\^_")
(forward-char -1)
(let ((start (point))
(chars-deleted 0)
subfiles
(subfile-number 1)
(case-fold-search t)
(filename (file-name-sans-versions buffer-file-name)))
(goto-char (point-max))
(forward-line -8)
(setq buffer-read-only nil)
(or (search-forward "\^_\nEnd tag table\n" nil t)
(error "Tag table required; use M-x Info-tagify"))
(search-backward "\nTag table:\n")
(if (looking-at "\nTag table:\n\^_")
(error "Tag table is just a skeleton; use M-x Info-tagify"))
(beginning-of-line)
(forward-char 1)
(save-restriction
(narrow-to-region (point-min) (point))
(goto-char (point-min))
(while (< (1+ (point)) (point-max))
(goto-char (min (+ (point) Info-split-threshold) (point-max)))
(search-forward "\^_" nil 'move)
(setq subfiles
(cons (list (+ start chars-deleted)
(concat (file-name-nondirectory filename)
(format "-%d" subfile-number)))
subfiles))
;; Put a newline at end of split file, to make Unix happier.
(insert "\n")
(write-region (point-min) (point)
(concat filename (format "-%d" subfile-number)))
(delete-region (1- (point)) (point))
;; Back up over the final ^_.
(forward-char -1)
(setq chars-deleted (+ chars-deleted (- (point) start)))
(delete-region start (point))
(setq subfile-number (1+ subfile-number))))
(while subfiles
(goto-char start)
(insert (nth 1 (car subfiles))
(format ": %d" (1- (car (car subfiles))))
"\n")
(setq subfiles (cdr subfiles)))
(goto-char start)
(insert "\^_\nIndirect:\n")
(search-forward "\nTag Table:\n")
(insert "(Indirect)\n")))
(defvar Info-validate-allnodes)
(defvar Info-validate-thisnode)
(defvar Info-validate-lossages)
;;;###autoload
(defun Info-validate ()
"Check current buffer for validity as an Info file.
Check that every node pointer points to an existing node."
(interactive)
(save-excursion
(save-restriction
(widen)
(goto-char (point-min))
(if (search-forward "\nTag table:\n(Indirect)\n" nil t)
(error "Don't yet know how to validate indirect info files: \"%s\""
(buffer-name (current-buffer))))
(goto-char (point-min))
(let ((Info-validate-allnodes '(("*")))
(regexp "Node:[ \t]*\\([^,\n\t]*\\)[,\t\n]")
(case-fold-search t)
(tags-losing nil)
(Info-validate-lossages ()))
(while (search-forward "\n\^_" nil t)
(forward-line 1)
(let ((beg (point)))
(forward-line 1)
(if (re-search-backward regexp beg t)
(let ((name (downcase
(buffer-substring-no-properties
(match-beginning 1)
(progn
(goto-char (match-end 1))
(skip-chars-backward " \t")
(point))))))
(if (assoc name Info-validate-allnodes)
(setq Info-validate-lossages
(cons (list name "Duplicate node-name" nil)
Info-validate-lossages))
(setq Info-validate-allnodes
(cons (list name
(progn
(end-of-line)
(and (re-search-backward
"prev[ious]*:" beg t)
(progn
(goto-char (match-end 0))
(downcase
(Info-following-node-name)))))
beg)
Info-validate-allnodes)))))))
(goto-char (point-min))
(while (search-forward "\n\^_" nil t)
(forward-line 1)
(let ((beg (point))
Info-validate-thisnode next)
(forward-line 1)
(if (re-search-backward regexp beg t)
(save-restriction
(let ((md (match-data)))
(search-forward "\n\^_" nil 'move)
(narrow-to-region beg (point))
(set-match-data md))
(setq Info-validate-thisnode (downcase
(buffer-substring-no-properties
(match-beginning 1)
(progn
(goto-char (match-end 1))
(skip-chars-backward " \t")
(point)))))
(end-of-line)
(and (search-backward "next:" nil t)
(setq next (Info-validate-node-name "invalid Next"))
(assoc next Info-validate-allnodes)
(if (equal (car (cdr (assoc next Info-validate-allnodes)))
Info-validate-thisnode)
;; allow multiple `next' pointers to one node
(let ((tem Info-validate-lossages))
(while tem
(if (and (equal (car (cdr (car tem)))
"should have Previous")
(equal (car (car tem))
next))
(setq Info-validate-lossages
(delq (car tem) Info-validate-lossages)))
(setq tem (cdr tem))))
(setq Info-validate-lossages
(cons (list next
"should have Previous"
Info-validate-thisnode)
Info-validate-lossages))))
(end-of-line)
(if (re-search-backward "prev[ious]*:" nil t)
(Info-validate-node-name "invalid Previous"))
(end-of-line)
(if (search-backward "up:" nil t)
(Info-validate-node-name "invalid Up"))
(if (re-search-forward "\n* Menu:" nil t)
(while (re-search-forward "\n\\* " nil t)
(Info-validate-node-name
(concat "invalid menu item "
(buffer-substring (point)
(save-excursion
(skip-chars-forward "^:")
(point))))
(Info-extract-menu-node-name))))
(goto-char (point-min))
(while (re-search-forward "\\*note\\>[^:\t]*:" nil t)
(goto-char (+ (match-beginning 0) 5))
(skip-chars-forward " \n")
(Info-validate-node-name
(concat "invalid reference "
(buffer-substring (point)
(save-excursion
(skip-chars-forward "^:")
(point))))
(Info-extract-menu-node-name "Bad format cross-reference")))))))
(setq tags-losing (not (Info-validate-tags-table)))
(if (or Info-validate-lossages tags-losing)
(with-output-to-temp-buffer " *problems in info file*"
(while Info-validate-lossages
(princ "In node \"")
(princ (car (car Info-validate-lossages)))
(princ "\", ")
(let ((tem (nth 1 (car Info-validate-lossages))))
(cond ((string-match "\n" tem)
(princ (substring tem 0 (match-beginning 0)))
(princ "..."))
(t
(princ tem))))
(if (nth 2 (car Info-validate-lossages))
(progn
(princ ": ")
(let ((tem (nth 2 (car Info-validate-lossages))))
(cond ((string-match "\n" tem)
(princ (substring tem 0 (match-beginning 0)))
(princ "..."))
(t
(princ tem))))))
(terpri)
(setq Info-validate-lossages (cdr Info-validate-lossages)))
(if tags-losing (princ "\nTags table must be recomputed\n")))
;; Here if info file is valid.
;; If we already made a list of problems, clear it out.
(save-excursion
(if (get-buffer " *problems in info file*")
(progn
(set-buffer " *problems in info file*")
(kill-buffer (current-buffer)))))
(message "File appears valid"))))))
(defun Info-validate-node-name (kind &optional name)
(if name
nil
(goto-char (match-end 0))
(skip-chars-forward " \t")
(if (= (following-char) ?\()
nil
(setq name
(buffer-substring-no-properties
(point)
(progn
(skip-chars-forward "^,\t\n")
(skip-chars-backward " ")
(point))))))
(if (null name)
nil
(setq name (downcase name))
(or (and (> (length name) 0) (= (aref name 0) ?\())
(assoc name Info-validate-allnodes)
(setq Info-validate-lossages
(cons (list Info-validate-thisnode kind name)
Info-validate-lossages))))
name)
(defun Info-validate-tags-table ()
(goto-char (point-min))
(if (not (search-forward "\^_\nEnd tag table\n" nil t))
t
(not (catch 'losing
(let* ((end (match-beginning 0))
(start (progn (search-backward "\nTag table:\n")
(1- (match-end 0))))
tem)
(setq tem Info-validate-allnodes)
(while tem
(goto-char start)
(or (equal (car (car tem)) "*")
(search-forward (concat "Node: "
(car (car tem))
"\177")
end t)
(throw 'losing 'x))
(setq tem (cdr tem)))
(goto-char (1+ start))
(while (looking-at ".*Node: \\(.*\\)\177\\([0-9]+\\)$")
(setq tem (downcase (buffer-substring-no-properties
(match-beginning 1)
(match-end 1))))
(setq tem (assoc tem Info-validate-allnodes))
(if (or (not tem)
(< 1000 (progn
(goto-char (match-beginning 2))
(setq tem (- (car (cdr (cdr tem)))
(read (current-buffer))))
(if (> tem 0) tem (- tem)))))
(throw 'losing 'y))
(forward-line 1)))
(if (looking-at "\^_\n")
(forward-line 1))
(or (looking-at "End tag table\n")
(throw 'losing 'z))
nil))))
;;;###autoload
(defun batch-info-validate ()
"Run `Info-validate' on the files remaining on the command line.
Must be used only with -batch, and kills Emacs on completion.
Each file will be processed even if an error occurred previously.
For example, invoke \"emacs -batch -f batch-info-validate $info/ ~/*.info\""
(if (not noninteractive)
(error "batch-info-validate may only be used -batch"))
(let ((version-control t)
(auto-save-default nil)
(find-file-run-dired nil)
(kept-old-versions 259259)
(kept-new-versions 259259))
(let ((error 0)
file
(files ()))
(while command-line-args-left
(setq file (expand-file-name (car command-line-args-left)))
(cond ((not (file-exists-p file))
(message ">> %s does not exist!" file)
(setq error 1
command-line-args-left (cdr command-line-args-left)))
((file-directory-p file)
(setq command-line-args-left (nconc (directory-files file)
(cdr command-line-args-left))))
(t
(setq files (cons file files)
command-line-args-left (cdr command-line-args-left)))))
(while files
(setq file (car files)
files (cdr files))
(let ((lose nil))
(condition-case err
(progn
(if buffer-file-name (kill-buffer (current-buffer)))
(find-file file)
(buffer-disable-undo (current-buffer))
(set-buffer-modified-p nil)
(fundamental-mode)
(let ((case-fold-search nil))
(goto-char (point-max))
(cond ((search-backward "\n\^_\^L\nTag table:\n" nil t)
(message "%s already tagified" file))
((< (point-max) 30000)
(message "%s too small to bother tagifying" file))
(t
(Info-tagify))))
(let ((loss-name " *problems in info file*"))
(message "Checking validity of info file %s..." file)
(if (get-buffer loss-name)
(kill-buffer loss-name))
(Info-validate)
(if (not (get-buffer loss-name))
nil ;(message "Checking validity of info file %s... OK" file)
(message "----------------------------------------------------------------------")
(message ">> PROBLEMS IN INFO FILE %s" file)
(with-current-buffer loss-name
(princ (buffer-substring-no-properties
(point-min) (point-max))))
(message "----------------------------------------------------------------------")
(setq error 1 lose t)))
(if (and (buffer-modified-p)
(not lose))
(progn (message "Saving modified %s" file)
(save-buffer))))
(error (message ">> Error: %s" (prin1-to-string err))))))
(kill-emacs error))))
(provide 'informat)
;;; informat.el ends here
|
