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1 | ;;; woman.el --- browse UN*X manual pages `wo (without) man' |
2 | ||
3 | ;; Copyright (C) 2000 Free Software Foundation, Inc. | |
4 | ||
5 | ;; Author: Francis J. Wright <F.J.Wright@Maths.QMW.ac.uk> | |
6 | ;; Maintainer: Francis J. Wright <F.J.Wright@Maths.QMW.ac.uk> | |
7 | ;; Keywords: help, man, UN*X, manual | |
8 | ;; Adapted-By: Eli Zaretskii <eliz@is.elta.co.il> | |
9 | ;; Version: see `woman-version' | |
10 | ||
11 | ;; This file is part of GNU Emacs. | |
12 | ||
13 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
14 | ;; it under the terms of the GNU General Public License as published by | |
15 | ;; the Free Software Foundation; either version 2, or (at your option) | |
16 | ;; any later version. | |
17 | ||
18 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
19 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
20 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
21 | ;; GNU General Public License for more details. | |
22 | ||
23 | ;; You should have received a copy of the GNU General Public License | |
24 | ;; along with GNU Emacs; see the file COPYING. If not, write to the | |
25 | ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
26 | ;; Boston, MA 02111-1307, USA. | |
27 | ||
28 | ;;; Commentary: | |
29 | ||
30 | ;; WoMan implements a subset of the formatting performed by the Emacs | |
31 | ;; `man' (or `manual-entry') command to format a UN*X manual `page' | |
32 | ;; for display, but without calling any external programs. It is | |
33 | ;; intended to emulate the whole of the -man macro package, plus those | |
34 | ;; ?roff requests that are most commonly used in man pages. However, | |
35 | ;; the emulation is modified to include the reformatting done by the | |
36 | ;; Emacs `man' command. No hyphenation is performed. | |
37 | ||
38 | ;; Advantages | |
39 | ||
40 | ;; Much more direct, does not require any external programs. | |
41 | ;; Supports completion on man page names. | |
42 | ||
43 | ;; Disadvantages | |
44 | ||
45 | ;; Not a complete emulation. Currently no support for eqn or tbl. | |
46 | ;; Slightly slower for large man pages (but usually faster for | |
47 | ;; small- and medium-size pages). | |
48 | ||
49 | ;; This browser works quite well on simple well-written man files. It | |
50 | ;; works less well on idiosyncratic files that `break the rules' or | |
51 | ;; use the more obscure ?roff requests directly. Current test results | |
52 | ;; are available in the file woman.status. | |
53 | ||
54 | ;; WoMan supports the use of compressed man files via | |
55 | ;; `auto-compression-mode' by turning it on if necessary. But you may | |
56 | ;; need to adjust the user option `woman-file-compression-regexp'. | |
57 | ||
58 | ;; Read on for (currently) the only documentation for WoMan! | |
59 | ||
60 | ;; See also the documentation for the WoMan interactive commands and | |
61 | ;; user option variables, all of which begin with the prefix `woman-'. | |
62 | ;; This can be done most easily by loading WoMan and then running the | |
63 | ;; command `woman-mini-help', or selecting the WoMan menu option `Mini | |
64 | ;; Help' when WoMan is running. | |
65 | ||
66 | ;; WoMan is still under development! Please let me know what doesn't | |
67 | ;; work -- I am adding and improving functionality as testing shows | |
68 | ;; that it is necessary. See below for guidance on reporting bugs. | |
69 | ||
70 | ;; The latest versions of this (and related) files are available from | |
71 | ;; the URL | |
72 | ||
73 | ;; http://centaur.maths.qmw.ac.uk/Emacs/ | |
74 | ||
75 | ;; Recommended use | |
76 | ;; =============== | |
77 | ||
78 | ;; Put this in your .emacs: | |
79 | ;; (autoload 'woman "woman" | |
80 | ;; "Decode and browse a UN*X man page." t) | |
81 | ;; (autoload 'woman-find-file "woman" | |
82 | ;; "Find, decode and browse a specific UN*X man-page file." t) | |
83 | ||
84 | ;; Then either (1 -- *RECOMMENDED*): If the `MANPATH' environment | |
85 | ;; variable is set then WoMan will use it; otherwise you may need to | |
86 | ;; reset the Lisp variable `woman-manpath', and you may also want to | |
87 | ;; set the Lisp variable `woman-path'. Please see the online | |
88 | ;; documentation for these variables. Now you can execute the | |
89 | ;; extended command `woman', enter or select a manual entry topic, | |
90 | ;; using completion, and if necessary select a filename, using | |
91 | ;; completion. By default, WoMan suggests the word nearest to the | |
92 | ;; cursor in the current buffer as the topic. | |
93 | ||
94 | ;; Or (2): Execute the extended command `woman-find-file' and enter a | |
95 | ;; filename, using completion. This mode of execution may be useful | |
96 | ;; for temporary files outside the standard UN*X manual directory | |
97 | ;; structure. | |
98 | ||
99 | ;; Or (3): Put the next two sexpr's in your .emacs: | |
100 | ;; (autoload 'woman-dired-find-file "woman" | |
101 | ;; "In dired, run the WoMan man-page browser on this file." t) | |
102 | ;; (add-hook 'dired-mode-hook | |
103 | ;; #'(lambda () | |
104 | ;; (define-key dired-mode-map "W" 'woman-dired-find-file))) | |
105 | ;; and open the directory containing the man page file using dired, | |
106 | ;; put the cursor on the file, and press `W'. | |
107 | ||
108 | ;; In each case, the result should (!) be a buffer in Man mode showing | |
109 | ;; a formatted manual entry. When called from WoMan, Man mode should | |
110 | ;; work as advertised, but modified where necessary in the context of | |
111 | ;; WoMan. (However, `Man' will still invoke the standard Emacs | |
112 | ;; manual-browsing facility rather than `WoMan' -- this is | |
113 | ;; intentional!) | |
114 | ||
115 | ;; (By default, WoMan will automatically define the dired keys "W" and | |
116 | ;; "w" when it loads, but only if they are not already defined. This | |
117 | ;; behaviour is controlled by the user option `woman-dired-keys'. | |
118 | ;; Note that the `dired-x' (dired extra) package binds | |
119 | ;; `dired-copy-filename-as-kill' to the key "w" (as pointed out by Jim | |
120 | ;; Davidson), although "W" appears to be really unused. The `dired-x' | |
121 | ;; package will over-write the WoMan binding to "w", whereas (by | |
122 | ;; default) WoMan will not overwrite the `dired-x' binding.) | |
123 | ||
124 | ;; The following is based on suggestions by Guy Gascoigne-Piggford and | |
125 | ;; Juanma Barranquero. If you really want to square the man-woman | |
126 | ;; circle then you might care to define the following bash function in | |
127 | ;; .bashrc: | |
128 | ||
129 | ;; man() { gnudoit -q '(raise-frame (selected-frame)) (woman' \"$1\" ')' ; } | |
130 | ||
131 | ;; If you use Microsoft COMMAND.COM then you can create a file called | |
132 | ;; man.bat somewhere in your path containing the two lines: | |
133 | ||
134 | ;; @echo off | |
135 | ;; gnudoit -q (raise-frame (selected-frame)) (woman \"%1\") | |
136 | ||
137 | ;; and then (e.g. from a command prompt or the Run... option in the | |
138 | ;; Start menu) just execute | |
139 | ||
140 | ;; man man_page_name | |
141 | ||
142 | ||
143 | ;; Using the `word at point' as a topic suggestion | |
144 | ;; =============================================== | |
145 | ||
146 | ;; By default, the `woman' command uses the word nearest to point in | |
147 | ;; the current buffer as a suggestion for the topic to look up. The | |
148 | ;; topic must be confirmed or edited in the minibuffer. This | |
149 | ;; suggestion can be turned off, or `woman' can use the suggested | |
150 | ;; topic without confirmation* if possible, by setting the user-option | |
151 | ;; `woman-topic-at-point' to nil or t respectively. (Its default | |
152 | ;; value is neither nil nor t, meaning ask for confirmation.) | |
153 | ||
154 | ;; [* Thanks to Benjamin Riefenstahl for suggesting this | |
155 | ;; functionality.] | |
156 | ||
157 | ;; The variable `woman-topic-at-point' can be rebound locally, which | |
158 | ;; may be useful to provide special private key bindings, e.g. | |
159 | ||
160 | ;; (global-set-key "\C-cw" | |
161 | ;; #'(lambda () | |
162 | ;; (interactive) | |
163 | ;; (let ((woman-topic-at-point t)) | |
164 | ;; (woman))))) | |
165 | ||
166 | ||
167 | ;; Customization, Hooks and Imenu | |
168 | ;; ============================== | |
169 | ||
170 | ;; WoMan supports the GNU Emacs 20+ customization facility, and puts | |
171 | ;; a customization group called `WoMan' in the `Help' group under the | |
172 | ;; top-level `Emacs' group. In order to be able to customize WoMan | |
173 | ;; without first loading it, add the following sexp to your .emacs: | |
174 | ||
175 | ;; (defgroup woman nil | |
176 | ;; "Browse UNIX manual pages `wo (without) man'." | |
177 | ;; :tag "WoMan" :group 'help :load "woman") | |
178 | ||
179 | ||
180 | ;; WoMan currently runs two hooks: `woman-pre-format-hook' immediately | |
181 | ;; before formatting a buffer and `woman-post-format-hook' immediately | |
182 | ;; after formatting a buffer. These hooks can be used for special | |
183 | ;; customizations that require code to be executed, etc., although | |
184 | ;; most customization should be possible by setting WoMan user option | |
185 | ;; variables, e.g. in `.emacs' and should NOT require the use of the | |
186 | ;; hooks. `woman-pre-format-hook' might be appropriate for face | |
187 | ;; customization, whereas `woman-post-format-hook' might be | |
188 | ;; appropriate for installing a dynamic menu using `imenu' (although | |
189 | ;; it is better to use the built-in WoMan imenu support). | |
190 | ||
191 | ;; The WoMan menu provides an option to make a contents menu for the | |
192 | ;; current man page (using imenu). Alternatively, if you set the | |
193 | ;; variable `woman-imenu' to `t' then WoMan will do it automatically | |
194 | ;; for every man page. The menu title is the value of the variable | |
195 | ;; `woman-imenu-title', which is "CONTENTS" by default. By default, | |
196 | ;; the menu shows manual sections and subsections, but you can change | |
197 | ;; this by changing the value of `woman-imenu-generic-expression'. | |
198 | ;; This facility is not yet widely tested and may be fooled by obscure | |
199 | ;; man pages that `break the rules'. | |
200 | ||
201 | ;; WoMan is configured not to replace spaces in an imenu *Completion* | |
202 | ;; buffer. For further documentation of the use of imenu, such as | |
203 | ;; menu sorting, see the source file imenu.el, which is distributed | |
204 | ;; with GNU Emacs. | |
205 | ||
206 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
207 | ||
208 | ;; Howard Melman made (essentially) the following suggestions, which | |
209 | ;; are slightly different from the expression that I currently use. | |
210 | ;; You may prefer one of Howard's suggestions, which I think assume | |
211 | ;; that `case-fold-search' is `t' (which it is by default): | |
212 | ||
213 | ;; (setq woman-imenu-generic-expression | |
214 | ;; '((nil "^\\( \\)?\\([A-Z][A-Z ]+[A-Z]\\)[ \t]*$" 2))) | |
215 | ||
216 | ;; will give support for .SH and .SS, though it won't show the heading | |
217 | ;; name hierarchy. If you just want .SH in the imenu then use: | |
218 | ||
219 | ;; (setq woman-imenu-generic-expression | |
220 | ;; '((nil "^\\([A-Z][A-Z ]+[A-Z]\\)[ \t]*$" 1))) | |
221 | ||
222 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
223 | ||
224 | ||
225 | ;; Vertical spacing and blank lines | |
226 | ;; ================================ | |
227 | ||
228 | ;; The number of consecutive blank lines in the formatted buffer | |
229 | ;; should be either 0 or 1. A blank line should leave a space like | |
230 | ;; .sp 1 (p. 14). Current policy is to output vertical space only | |
231 | ;; immediately before text is output. | |
232 | ||
233 | ||
234 | ;; Horizontal and vertical spacing and resolution | |
235 | ;; ============================================== | |
236 | ||
237 | ;; WoMan currently assumes 10 characters per inch horizontally, hence | |
238 | ;; a horizontal resolution of 24 basic units, and 5 lines per inch | |
239 | ;; vertically, hence a vertical resolution of 48 basic units. (nroff | |
240 | ;; uses 240 per inch). | |
241 | ||
242 | ||
243 | ;; The *WoMan-Log* buffer | |
244 | ;; ====================== | |
245 | ||
246 | ;; This is modelled on the byte-compiler. It logs all files formatted | |
247 | ;; by WoMan, and if WoMan finds anything that it cannot handle then it | |
248 | ;; writes a warning to this buffer. If the variable `woman-show-log' | |
249 | ;; is non-nil (by default it is `nil') then WoMan automatically | |
250 | ;; displays this buffer. Many WoMan warnings can be completely | |
251 | ;; ignored, because they are reporting the fact that WoMan has ignored | |
252 | ;; requests that it is correct to ignore. In some future version this | |
253 | ;; level of paranoia will be reduced, but not until WoMan is more | |
254 | ;; reliable. At present, all warnings should be treated with some | |
255 | ;; suspicion. Uninterpreted escape sequences are also logged (in some | |
256 | ;; cases). | |
257 | ||
258 | ;; Uninterpreted ?roff requests can optionally be left in the | |
259 | ;; formatted buffer to indicate precisely where they occur by | |
260 | ;; resetting the variable `woman-ignore' to `nil' (by default it is | |
261 | ;; `t'). | |
262 | ||
263 | ;; Automatic initiation of woman decoding | |
264 | ||
265 | ;; (Probably not a good idea. If you use it, be careful!) | |
266 | ||
267 | ;; Put something like this in your .emacs. The call to | |
268 | ;; set-visited-file-name is to avoid font-locking triggered by | |
269 | ;; automatic major mode selection. | |
270 | ||
271 | ;; (autoload 'woman-decode-region "woman") | |
272 | ||
273 | ;; (setq format-alist | |
274 | ;; (cons | |
275 | ;; '(man "UN*X man-page source format" "\\.\\(TH\\|ig\\) " | |
276 | ;; woman-decode-region nil nil | |
277 | ;; #'(lambda (arg) | |
278 | ;; (set-visited-file-name | |
279 | ;; (file-name-sans-extension buffer-file-name))))) | |
280 | ;; format-alist)) | |
281 | ||
282 | ||
283 | ;; Reporting Bugs | |
284 | ;; ============== | |
285 | ||
286 | ;; If WoMan fails completely, or formats a file incorrectly | |
287 | ;; (i.e. obviously wrongly or significantly differently from man) or | |
288 | ;; inelegantly, then please | |
289 | ||
290 | ;; (a) check that you are running the latest version of woman.el | |
291 | ;; available from my web site (see above), | |
292 | ||
293 | ;; (b) check that the problem is not already described in the file | |
294 | ;; woman.status, also available from my web site. | |
295 | ||
296 | ;; If both of the above are true then please email me the entry from | |
297 | ;; the *WoMan-Log* buffer relating to the problem file, together with | |
298 | ;; a brief description of the problem. Please indicate where you got | |
299 | ;; the source file from, but do not send it to me unless I ask you to! | |
300 | ;; Thanks. (There is at present no automated bug-reporting facility | |
301 | ;; for WoMan.) | |
302 | ||
303 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
304 | ||
305 | ;; NOTE: | |
306 | ||
307 | ;; CASE-DEPENDENCE OF FILENAMES. By default, WoMan ignores case in | |
308 | ;; file pathnames only when it seems appropriate. MS-Windows users | |
309 | ;; who want complete case independence should set the NTEmacs variable | |
310 | ;; `w32-downcase-file-names' to `t' and use all lower case when | |
311 | ;; setting WoMan file paths. | |
312 | ||
313 | ;; (1) INCOMPATIBLE CHANGE! WoMan no longer uses a persistent topic | |
314 | ;; cache by default. (It caused too much confusion!) Explicitly set | |
315 | ;; the variable `woman-cache-filename' to save the cache between Emacs | |
316 | ;; sessions. This is recommended only if the command `woman' is too | |
317 | ;; slow the first time that it is run in an Emacs session, while it | |
318 | ;; builds its cache in main memory, which MAY be VERY slow. | |
319 | ||
320 | ;; (2) The user option `woman-cache-level' controls the amount of | |
321 | ;; information cached (in main memory and, optionally, saved to disc). | |
322 | ||
323 | ;; (3) UPDATING THE CACHE. A prefix argument always causes the | |
324 | ;; `woman' command (only) to rebuild its topic cache, and to re-save | |
325 | ;; it to `woman-cache-filename' if this variable has a non-nil value. | |
326 | ;; This is necessary if the NAMES (not contents) of any of the | |
327 | ;; directories or files in the paths specified by `woman-manpath' or | |
328 | ;; `woman-path' change. If WoMan user options that affect the cache | |
329 | ;; are changed then WoMan will automatically update its cache file on | |
330 | ;; disc (if one is in use) the next time it is run in a new Emacs | |
331 | ;; session. | |
332 | ||
333 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
334 | ||
335 | ||
336 | ;; TO DO | |
337 | ;; ===== | |
338 | ||
339 | ;; MUST PROCESS .if, .nr IN ORDER ENCOUNTERED IN FILE! (rcsfile, mf). | |
340 | ;; Allow general delimiter in `\v', cf. `\h'. | |
341 | ;; Improve major-mode documentation. | |
342 | ;; Pre-process conditionals in macro bodies if possible for speed? | |
343 | ;; Emulate some preprocessor support for tbl (.TS/.TE) and eqn (.EQ/.EN) | |
344 | ;; Re-write filling and adjusting code! | |
345 | ;; Allow word wrap at comma (for long option lists)? | |
346 | ;; Buffer list handling not quite right. | |
347 | ;; Make 10 or 12 pitch (cpi) optional -- 12 => ll = 78 | |
348 | ;; Use unpaddable space for tabbing? | |
349 | ;; Tidy up handling of fonts when filling and adjusting | |
350 | ;; -- see text/text properties? | |
351 | ;; Improve speed | |
352 | ;; Add font-lock support (for quoted strings, etc.)? | |
353 | ;; Optionally save large files in enriched format? | |
354 | ;; Add apropos facility by searching NAME (?) entry in man files? | |
355 | ;; Documentation -- optional auto-display of formatted WoMan man page? | |
356 | ;; Implement a bug reporter? | |
357 | ;; Support diversion and traps (to some extent) - for Tcl/tk pages? | |
358 | ;; Add a menu of WoMan buffers? | |
359 | ||
360 | ||
361 | ;; Implementation strategy [this description is now well out of date!] | |
362 | ;; -- three main passes, each to process respectively: | |
363 | ||
364 | ;; 1) non-breaking `.' requests including font macros | |
365 | ;; 2) \ escape sequences, mainly special characters and font changes | |
366 | ;; 3) breaking `.' requests, mainly filling and justification | |
367 | ||
368 | ;; For each pass, a control function finds and pre-processes the | |
369 | ;; escape or request and then calls the appropriate function to | |
370 | ;; perform the required formatting. Based originally on enriched.el | |
371 | ;; and format.el. | |
372 | ||
373 | ;; See also /usr/local/share/groff/tmac/tmac.an | |
374 | ||
375 | ||
376 | ;; Acknowledgements | |
377 | ;; ================ | |
378 | ||
379 | ;; For Heather, Kathryn and Madelyn, the women in my life | |
380 | ;; (although they will probably never use it)! | |
381 | ||
382 | ;; I also thank the following for helpful suggestions, bug reports, | |
383 | ;; code fragments, general interest, etc.: | |
384 | ;; Jari Aalto <jari.aalto@cs.tpu.fi> | |
385 | ;; Dean Andrews <dean@dra.com> | |
386 | ;; Juanma Barranquero <barranquero@laley-actualidad.es> | |
387 | ;; Karl Berry <kb@cs.umb.edu> | |
388 | ;; Jim Chapman <jchapman@netcomuk.co.uk> | |
389 | ;; Frederic Corne <frederic.corne@erli.fr> | |
390 | ;; Peter Craft <craft@alacritech.com> | |
391 | ;; Charles Curley <ccurley@trib.com> | |
392 | ;; Jim Davidson <jdavidso@teknowledge.com> | |
393 | ;; Kevin D'Elia <Kevin.DElia@mci.com> | |
394 | ;; John Fitch <jpff@maths.bath.ac.uk> | |
395 | ;; Hans Frosch <jwfrosch@rish.b17c.ingr.com> | |
396 | ;; Guy Gascoigne-Piggford <ggp@informix.com> | |
397 | ;; Brian Gorka <gorkab@sanchez.com> | |
398 | ;; Nicolai Henriksen <nhe@lyngso-industri.dk> | |
399 | ;; Thomas Herchenroeder <the@software-ag.de> | |
400 | ;; Alexander Hinds <ahinds@thegrid.net> | |
401 | ;; Stefan Hornburg <sth@hacon.de> | |
402 | ;; Theodore Jump <tjump@cais.com> | |
403 | ;; Paul Kinnucan <paulk@mathworks.com> | |
404 | ;; Jonas Linde <jonas@init.se> | |
405 | ;; Andrew McRae <andrewm@optimation.co.nz> | |
406 | ;; Howard Melman <howard@silverstream.com> | |
407 | ;; Dennis Pixton <dennis@math.binghamton.edu> | |
408 | ;; T. V. Raman <raman@Adobe.COM> | |
409 | ;; Bruce Ravel <bruce.ravel@nist.gov> | |
410 | ;; Benjamin Riefenstahl <benny@crocodial.de> | |
411 | ;; Kevin Ruland <kruland@seistl.com> | |
412 | ;; Tom Schutter <tom@platte.com> | |
413 | ;; Wei-Xue Shi <wxshi@ma.neweb.ne.jp> | |
414 | ;; Fabio Somenzi <fabio@joplin.colorado.edu> | |
415 | ;; Karel Sprenger <ks@ic.uva.nl> | |
416 | ;; Chris Szurgot <szurgot@itribe.net> | |
417 | ;; Paul A. Thompson <pat@po.cwru.edu> | |
418 | ;; Geoff Voelker <voelker@cs.washington.edu> | |
419 | ||
420 | (defconst woman-version "0.52 (beta), Time-stamp: <09 January 2000>" | |
421 | "WoMan version information.") | |
422 | ||
423 | ;; $Id: woman.el,v 1.26 2000-01-09 09:44:25+00 fjw Rel $ | |
424 | ||
425 | ;; !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! | |
426 | ;; Changes in version 0.52 ([*] => user interface change) | |
427 | ;; Speeded up handling of underlined faces (mainly for "italics"). | |
428 | ;; [*] WoMan formatting time display and log added. Emacs `man' | |
429 | ;; formatting time display advice added. (This suggests that | |
430 | ;; WoMan formatting is faster than Emacs `man' *formatting*, | |
431 | ;; i.e. when man is not using `catman' caching. E.g. `woman | |
432 | ;; bash' takes 27s whereas `man bash' takes 35s and for smaller | |
433 | ;; files `woman' can be relatively much faster than `man'.) | |
434 | ;; [*] Experimental support for non-ASCII characters from the | |
435 | ;; default and symbol fonts added, initially only for MS-Windows. | |
436 | ;; NOTE: It is off by default, mainly because it may increase the | |
437 | ;; line spacing; customize `woman-use-symbols' to `on' to use it. | |
438 | ;; Pad character handling for .fc fixed. | |
439 | ;; Tested: see `woman.status'. | |
440 | ||
441 | ;; Changes in version 0.51 ([*] => user interface change) | |
442 | ;; [*] Improved handling of underlined faces (mainly for "italics"). | |
443 | ;; [*] Allow environment variables in directory path elements. | |
444 | ;; Display of pre-formatted files improved. | |
445 | ;; [*] Unintentional interaction with standard Man mode reduced. | |
446 | ;; [*] bzip2 decompression support added. All decompression now | |
447 | ;; works by turning on `auto-compression-mode' to decompress the | |
448 | ;; file if necessary, rather than decompressing explicitly. | |
449 | ;; Filename and compression regexps are now customizable user | |
450 | ;; options. | |
451 | ||
452 | ;; Changes in version 0.50 ([*] => user interface change) | |
453 | ;; [*] Requires GNU Emacs 20.3+. | |
454 | ;; [*] `defface' used to define faces. | |
455 | ;; [*] Follow `see also' references with mouse-2 click. | |
456 | ;; Number register increment support added (woman-registers). | |
457 | ;; .j must be a NUMBER acceptable by .ad request. | |
458 | ;; Very crude field support added. | |
459 | ;; Vertical unit specifier `v' added to register handling. | |
460 | ;; Improvement to local horizontal motion processing. | |
461 | ;; Minor fix to handle negative numeric arguments. | |
462 | ;; Handle horizontal motion escapes `\h' better. | |
463 | ;; Allow arbitrary delimiters in `.if', inc. special character escapes. | |
464 | ;; Allow `\n' within `.if' string comparisons. | |
465 | ;; Allow arbitrary delimiters in `\w', inc. special character escapes. | |
466 | ;; Processing of `\h' moved much later -- after indenting etc! | |
467 | ;; !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! | |
468 | ||
469 | \f | |
470 | ;;; Code: | |
471 | ||
472 | (require 'man) | |
473 | (eval-when-compile ; to avoid compiler warnings | |
474 | (require 'dired) | |
475 | (require 'apropos)) | |
476 | ||
477 | (defun woman-parse-colon-path (cd-path) | |
478 | "Explode a search path CD-PATH into a list of directory names. | |
479 | If the platform is MS-DOS/MS-Windows and any path begins with `//', | |
480 | assume a Cygwin-style colon-separated search path and convert any | |
481 | leading drive specifier `//X/' to `X:', otherwise assume paths | |
482 | separated by `path-separator'." | |
483 | ;; Based on a suggestion by Jari Aalto. | |
484 | (if (and (memq system-type '(ms-dos windows-nt)) | |
485 | (or (string-match "://" cd-path) | |
486 | (and (not (string-match ":" cd-path)) | |
487 | (string-match "\\`//" cd-path)))) | |
488 | (let ((path-separator ":")) | |
489 | (mapcar | |
490 | (function | |
491 | (lambda (path) ; //a/b -> a:/b | |
492 | (cond ((string-match "\\`//" path) | |
493 | (setq path (substring path 1)) ; //a/b -> /a/b | |
494 | (aset path 0 (aref path 1)) ; /a/b -> aa/b | |
495 | (aset path 1 ?:) ; aa/b -> a:/b | |
496 | )) | |
497 | path)) | |
498 | (parse-colon-path cd-path))) | |
499 | (parse-colon-path cd-path))) | |
500 | ||
501 | \f | |
502 | ;;; User options: | |
503 | ||
504 | ;; NB: Group identifiers must be lowercase! | |
505 | ||
506 | (defgroup woman nil | |
507 | "Browse UNIX manual pages `wo (without) man'." | |
508 | :tag "WoMan" | |
509 | :group 'help) | |
510 | ||
511 | (defcustom woman-show-log nil | |
512 | "*If non-nil then show the *WoMan-Log* buffer if appropriate. | |
513 | I.e. if any warning messages are written to it. Default is nil." | |
514 | :type 'boolean | |
515 | :group 'woman) | |
516 | ||
517 | (defcustom woman-pre-format-hook nil | |
518 | "*Hook run by WoMan immediately before formatting a buffer. | |
519 | Change only via `Customization' or the function `add-hook'." | |
520 | :type 'hook | |
521 | :group 'woman) | |
522 | ||
523 | (defcustom woman-post-format-hook nil | |
524 | "*Hook run by WoMan immediately after formatting a buffer. | |
525 | Change only via `Customization' or the function `add-hook'." | |
526 | :type 'hook | |
527 | :group 'woman) | |
528 | ||
529 | \f | |
530 | ;; Interface options | |
531 | ||
532 | (defgroup woman-interface nil | |
533 | "Interface options for browsing UNIX manual pages `wo (without) man'." | |
534 | :tag "WoMan Interface" | |
535 | :group 'woman) | |
536 | ||
537 | (defcustom woman-manpath | |
538 | (let ((manpath (getenv "MANPATH"))) | |
539 | (if manpath | |
540 | (woman-parse-colon-path manpath) | |
541 | ;; NB: `parse-colon-path' creates null elements for redundant | |
542 | ;; (semi-)colons and trailing `/'s! | |
543 | '("/usr/man" "/usr/local/man") | |
544 | )) | |
545 | "*List of DIRECTORY TREES to search for UN*X manual files. | |
546 | Each element should be the name of a directory that contains | |
547 | subdirectories of the form `man?', or more precisely subdirectories | |
548 | selected by the value of `woman-manpath-man-regexp'. Non-directory | |
549 | and unreadable files are ignored. The default value of this variable | |
550 | is based on the UN*X MANPATH environment variable if set, otherwise | |
551 | ||
552 | (\"/usr/man\" \"/usr/local/man\"). | |
553 | ||
554 | Any environment variables (which must have the UN*X-style form $NAME, | |
555 | e.g. $HOME, $EMACSDATA, $EMACS_DIR) are evaluated first but each | |
556 | element must evaluate to a SINGLE directory name. Trailing `/'s are | |
557 | ignored. (Specific directories in `woman-path' are also searched.) | |
558 | ||
559 | Microsoft platforms: | |
560 | I recommend including drive letters explicitly, e.g. | |
561 | ||
562 | (\"C:/Cygnus/cygwin-b20/man\" \"C:/usr/man\" \"C:/usr/local/man\"). | |
563 | ||
564 | The MANPATH environment variable may be set using DOS semi-colon- | |
565 | separated or UN*X / Cygwin colon-separated syntax (but not mixed)." | |
566 | :type '(repeat string) | |
567 | :group 'woman-interface) | |
568 | ||
569 | (defcustom woman-manpath-man-regexp "[Mm][Aa][Nn]" | |
570 | "Regexp to match man directories UNDER `woman-manpath' directories. | |
571 | These normally have names of the form `man?'. Its default value is | |
572 | \"[Mm][Aa][Nn]\", which is case-insensitive mainly for the benefit of | |
573 | Microsoft platforms. Its purpose is to avoid `cat?', `.', `..', etc." | |
574 | ;; Based on a suggestion by Wei-Xue Shi. | |
575 | :type 'string | |
576 | :group 'woman-interface) | |
577 | ||
578 | (defcustom woman-path | |
579 | (if (eq system-type 'ms-dos) '("$DJDIR/info" "$DJDIR/man/cat[1-9onlp]")) | |
580 | "*List of SPECIFIC DIRECTORIES to search for UN*X manual files. | |
581 | For example | |
582 | ||
583 | (\"/emacs/etc\"). | |
584 | ||
585 | These directories are searched in addition to the directory trees | |
586 | specified in `woman-manpath'. Each element should be a directory | |
587 | string or nil, which represents the current directory when the path is | |
588 | expanded and cached. However, the last component (only) of each | |
589 | directory string is treated as a regexp \(Emacs, not shell) and the | |
590 | string is expanded into a list of matching directories. Non-directory | |
591 | and unreadable files are ignored. The default value is nil. | |
592 | ||
593 | Any environment variables (which must have the UN*X-style form $NAME, | |
594 | e.g. $HOME, $EMACSDATA, $EMACS_DIR) are evaluated first but each | |
595 | element must evaluate to a SINGLE directory name (regexp, see above). | |
596 | For example | |
597 | ||
598 | (\"$EMACSDATA\") [or equivalently (\"$EMACS_DIR/etc\")]. | |
599 | ||
600 | Trailing `/'s are discarded. (The directory trees in `woman-manpath' | |
601 | are also searched.) On Microsoft platforms I recommend including | |
602 | drive letters explicitly." | |
603 | :type '(repeat (choice string (const nil))) | |
604 | :group 'woman-interface) | |
605 | ||
606 | (defcustom woman-cache-level 2 | |
607 | "*The level of topic caching. | |
608 | 1 - cache only the topic and directory lists | |
609 | (the only level before version 0.34 - only for compatibility); | |
610 | 2 - cache also the directories for each topic | |
611 | (faster, without using much more memory); | |
612 | 3 - cache also the actual filenames for each topic | |
613 | (fastest, but uses twice as much memory). | |
614 | The default value is currently 2, a good general compromise. | |
615 | If the `woman' command is slow to find files then try 3, which may be | |
616 | particularly beneficial with large remote-mounted man directories. | |
617 | Run the `woman' command with a prefix argument or delete the cache | |
618 | file `woman-cache-filename' for a change to take effect. | |
619 | \(Values < 1 behave like 1; values > 3 behave like 3.)" | |
620 | :type '(choice (const :tag "Minimal" 1) | |
621 | (const :tag "Default" 2) | |
622 | (const :tag "Maximal" 3)) | |
623 | :group 'woman-interface) | |
624 | ||
625 | (defcustom woman-cache-filename nil | |
626 | "*The full pathname of the WoMan directory and topic cache file. | |
627 | It is used to save and restore the cache between sessions. This is | |
628 | especially useful with remote-mounted man page files! The default | |
629 | value of nil suppresses this action. The `standard' non-nil | |
630 | filename is \"~/.wmncach.el\". Remember that a prefix argument forces | |
631 | the `woman' command to update and re-write the cache." | |
632 | :type '(choice (const :tag "None" nil) | |
633 | (const :tag "~/.wmncach.el" "~/.wmncach.el") | |
634 | file) | |
635 | :group 'woman-interface) | |
636 | ||
637 | (defcustom woman-dired-keys t | |
638 | "*List of `dired' mode keys to define to run WoMan on current file. | |
639 | E.g. '(\"w\" \"W\"), or any non-null atom to automatically define | |
640 | \"w\" and \"W\" if they are unbound, or nil to do nothing. | |
641 | Default is t." | |
642 | :type '(choice (const :tag "None" nil) | |
643 | (repeat string) | |
644 | (other :tag "Auto" t)) | |
645 | :group 'woman-interface) | |
646 | ||
647 | (defcustom woman-imenu-generic-expression | |
648 | '((nil "\n\\([A-Z].*\\)" 1) ; SECTION, but not TITLE | |
649 | ("*Subsections*" "^ \\([A-Z].*\\)" 1)) | |
650 | "*Imenu support for Sections and Subsections. | |
651 | An alist with elements of the form (MENU-TITLE REGEXP INDEX) -- | |
652 | see the documentation for `imenu-generic-expression'." | |
653 | :type 'sexp | |
654 | :group 'woman-interface) | |
655 | ||
656 | (defcustom woman-imenu nil | |
657 | "*If non-nil, WoMan adds a Contents menu to the menubar. | |
658 | WoMan adds the Contents menu by calling `imenu-add-to-menubar'. | |
659 | Default is nil." | |
660 | :type 'boolean | |
661 | :group 'woman-interface) | |
662 | ||
663 | (defcustom woman-imenu-title "CONTENTS" | |
664 | "*The title to use if WoMan adds a Contents menu to the menubar. | |
665 | Default is \"CONTENTS\"." | |
666 | :type 'string | |
667 | :group 'woman-interface) | |
668 | ||
669 | (defcustom woman-topic-at-point-default 'confirm | |
670 | ;; `woman-topic-at-point' may be let-bound when woman is loaded, in | |
671 | ;; which case its global value does not get defined. | |
672 | ;; `woman-file-name' sets it to this value if it is unbound. | |
673 | "*Default value for `woman-topic-at-point'." | |
674 | :type '(choice (const :tag "Yes" t) | |
675 | (const :tag "No" nil) | |
676 | (other :tag "Confirm" confirm)) | |
677 | :group 'woman-interface) | |
678 | ||
679 | (defcustom woman-topic-at-point woman-topic-at-point-default | |
680 | "*Controls use by `woman' of `word at point' as a topic suggestion. | |
681 | If non-nil then the `woman' command uses the word at point as an | |
682 | initial topic suggestion when it reads a topic from the minibuffer; if | |
683 | t then the `woman' command uses the word at point WITHOUT | |
684 | INTERACTIVE CONFIRMATION if it exists as a topic. The default value | |
685 | is `confirm', meaning suggest a topic and ask for confirmation." | |
686 | :type '(choice (const :tag "Yes" t) | |
687 | (const :tag "No" nil) | |
688 | (other :tag "Confirm" confirm)) | |
689 | :group 'woman-interface) | |
690 | ||
691 | (defvar woman-file-regexp nil | |
692 | "Regexp used to select (possibly compressed) man source files, e.g. | |
693 | \"\\.\\([0-9lmnt]\\w*\\)\\(\\.\\(g?z\\|bz2\\)\\)?\\'\". | |
694 | Built automatically from the customizable user options | |
695 | `woman-uncompressed-file-regexp' and `woman-file-compression-regexp'.") | |
696 | ||
697 | (defvar woman-uncompressed-file-regexp) ; for the compiler | |
698 | (defvar woman-file-compression-regexp) ; for the compiler | |
699 | ||
700 | (defun set-woman-file-regexp (symbol value) | |
701 | "Bind SYMBOL to VALUE and set `woman-file-regexp' as per user customizations. | |
702 | Used as :set cookie by Customize when user customized the user options | |
703 | `woman-uncompressed-file-regexp' and `woman-file-compression-regexp'." | |
704 | (set-default symbol value) | |
705 | (and (boundp 'woman-uncompressed-file-regexp) | |
706 | (boundp 'woman-file-compression-regexp) | |
707 | (setq woman-file-regexp | |
708 | (concat woman-uncompressed-file-regexp | |
709 | "\\(" | |
710 | (substring woman-file-compression-regexp 0 -2) | |
711 | "\\)?\\'")))) | |
712 | ||
713 | (defcustom woman-uncompressed-file-regexp | |
714 | "\\.\\([0-9lmnt]\\w*\\)" ; disallow no extension | |
715 | "*Do not change this unless you are sure you know what you are doing! | |
716 | Regexp used to select man source files (ignoring any compression extension). | |
717 | ||
718 | The SysV standard man pages use two character suffixes, and this is | |
719 | becoming more common in the GNU world. For example, the man pages | |
720 | in the ncurses package include `toe.1m', `form.3x', etc. | |
721 | ||
722 | Note: an optional compression regexp will be appended, so this regexp | |
723 | MUST NOT end with any kind of string terminator such as $ or \\'." | |
724 | :type 'regexp | |
725 | :set 'set-woman-file-regexp | |
726 | :group 'woman-interface) | |
727 | ||
728 | (defcustom woman-file-compression-regexp | |
729 | "\\.\\(g?z\\|bz2\\)\\'" | |
730 | "*Do not change this unless you are sure you know what you are doing! | |
731 | Regexp used to match compressed man file extensions for which | |
732 | decompressors are available and handled by function `auto-compression-mode', | |
733 | e.g. \"\\\\.\\\\(g?z\\\\|bz2\\\\)\\\\'\" for `gzip' or `bzip2'. | |
734 | Should begin with \\. and end with \\' and MUST NOT be optional." | |
735 | :type 'regexp | |
736 | :set 'set-woman-file-regexp | |
737 | :group 'woman-interface) | |
738 | ||
739 | \f | |
740 | ;; Formatting options | |
741 | ||
742 | (defgroup woman-formatting nil | |
743 | "Formatting options for browsing UNIX manual pages `wo (without) man'." | |
744 | :tag "WoMan Formatting" | |
745 | :group 'woman) | |
746 | ||
747 | (defcustom woman-fill-column 65 | |
748 | "*Right margin for formatted text -- default is 65." | |
749 | :type 'integer | |
750 | :group 'woman-formatting) | |
751 | ||
752 | (defcustom woman-fill-frame nil | |
753 | ;; Based loosely on a suggestion by Theodore Jump: | |
754 | "*If non-nil then most of the frame width is used." | |
755 | :type 'boolean | |
756 | :group 'woman-formatting) | |
757 | ||
758 | (defcustom woman-default-indent 5 | |
759 | "*Default prevailing indent set by -man macros -- default is 5. | |
760 | Set this variable to 7 to emulate Linux man formatting." | |
761 | :type 'integer | |
762 | :group 'woman-formatting) | |
763 | ||
764 | (defcustom woman-bold-headings t | |
765 | "*If non-nil then embolden section and subsection headings. Default is t. | |
766 | Heading emboldening is NOT standard `man' behaviour." | |
767 | :type 'boolean | |
768 | :group 'woman-formatting) | |
769 | ||
770 | (defcustom woman-ignore t | |
771 | "*If non-nil then unrecognised requests are ignored. Default is t. | |
772 | This gives the standard ?roff behaviour. If nil then they are left in | |
773 | the buffer, which may aid debugging." | |
774 | :type 'boolean | |
775 | :group 'woman-formatting) | |
776 | ||
777 | (defcustom woman-preserve-ascii nil | |
778 | "*If non-nil then preserve ASCII characters in the WoMan buffer. | |
779 | Otherwise, non-ASCII characters (that display as ASCII) may remain. | |
780 | This is irrelevant unless the buffer is to be saved to a file." | |
781 | :type 'boolean | |
782 | :group 'woman-formatting) | |
783 | ||
784 | \f | |
785 | ;; Faces: | |
786 | ||
787 | (defgroup woman-faces nil | |
788 | "Face options for browsing UNIX manual pages `wo (without) man'." | |
789 | :tag "WoMan Faces" | |
790 | :group 'woman | |
791 | :group 'faces) | |
792 | ||
793 | (defcustom woman-fontify | |
794 | (or (and (fboundp 'display-color-p) (display-color-p)) | |
795 | (and (fboundp 'display-graphic-p) (display-graphic-p)) | |
796 | (x-display-color-p)) | |
797 | "*If non-nil then WoMan assumes that face support is available. | |
798 | It defaults to a non-nil value if the display supports either colors | |
799 | or different fonts." | |
800 | :type 'boolean | |
801 | :group 'woman-faces) | |
802 | ||
803 | (defface woman-italic-face | |
804 | `((t (:italic t :underline t :foreground "red"))) | |
805 | "Face for italic font in man pages. | |
806 | Default: italic, underlined, foreground red. | |
807 | This is overkill! Troff uses just italic\; Nroff uses just underline. | |
808 | You should probably select either italic or underline as you prefer, | |
809 | but not both, although italic and underline work together perfectly well!" | |
810 | :group 'woman-faces) | |
811 | ||
812 | (defface woman-bold-face | |
813 | '((t (:bold t :foreground "blue"))) | |
814 | "Face for bold font in man pages. | |
815 | Default: bold, foreground blue." | |
816 | :group 'woman-faces) | |
817 | ||
818 | (defface woman-unknown-face | |
819 | '((t (:foreground "brown"))) | |
820 | "Face for all unknown fonts in man pages. | |
821 | Default: foreground brown. | |
822 | Brown is a good compromise: it is distinguishable from the default but | |
823 | not enough so to make font errors look terrible. (Files that use | |
824 | non-standard fonts seem to do so badly or in idiosyncratic ways!)" | |
825 | :group 'woman-faces) | |
826 | ||
827 | (defface woman-addition-face | |
828 | '((t (:foreground "orange"))) | |
829 | "Face for all additions made by WoMan to man pages. | |
830 | Default: foreground orange." | |
831 | :group 'woman-faces) | |
832 | ||
833 | (defun woman-colour-faces () | |
834 | "Set foreground colours of italic and bold faces to red and blue." | |
835 | (interactive) | |
836 | (set-face-foreground 'woman-italic-face "Red") | |
837 | (set-face-foreground 'woman-bold-face "Blue")) | |
838 | ||
839 | (defun woman-black-faces () | |
840 | "Set foreground colours of italic and bold faces both to black." | |
841 | (interactive) | |
842 | (set-face-foreground 'woman-italic-face "Black") | |
843 | (set-face-foreground 'woman-bold-face "Black")) | |
844 | ||
845 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
846 | ;; Experimental symbol font support, initially only for MS-Windows. | |
847 | (eval-when-compile | |
848 | (defvar woman-symbol-font) | |
849 | (defvar woman-use-symbols)) | |
850 | ||
851 | (when (and window-system (eq system-type 'windows-nt)) | |
852 | (make-face 'woman-symbol-face) | |
853 | ||
854 | ;; Set up the symbol font only if `woman-use-symbols' is true, to | |
855 | ;; avoid unnecessarily upsetting the line spacing in NTEmacs 20.5! | |
856 | ||
857 | (defcustom woman-use-symbols nil | |
858 | "*If non-nil then may use symbol font and non-ASCII characters | |
859 | from the default font for special characters. It is off by default, | |
860 | mainly because it may increase the line spacing in NTEmacs 20.5." | |
861 | :type 'boolean | |
862 | :set #'(lambda (symbol value) | |
863 | (set-default symbol value) | |
864 | (if (and (boundp 'woman-symbol-font) | |
865 | (stringp woman-symbol-font)) | |
866 | (set-face-font 'woman-symbol-face woman-symbol-font))) | |
867 | :group 'woman-faces) | |
868 | ||
869 | (defconst woman-symbol-font-list | |
870 | (let ((fonts (x-list-fonts "*" 'default)) | |
871 | symbol-fonts) | |
872 | ;; With NTEmacs 20.5, the PATTERN option to `x-list-fonts' does | |
873 | ;; not seem to work and fonts may be repeated, so ... | |
874 | (while fonts | |
875 | (and (string-match "-Symbol-" (car fonts)) | |
876 | (not (member (car fonts) symbol-fonts)) | |
877 | (setq symbol-fonts (cons (car fonts) symbol-fonts))) | |
878 | (setq fonts (cdr fonts))) | |
879 | symbol-fonts) | |
880 | "Symbol fonts in the same size as the default font when WoMan was loaded.") | |
881 | ||
882 | (defcustom woman-symbol-font (car woman-symbol-font-list) | |
883 | "*A string describing the symbol font to use for special characters. | |
884 | It should be compatible with, and the same size as, the default text font. | |
885 | Under MS-Windows, the default is | |
886 | \"-*-Symbol-normal-r-*-*-*-*-96-96-p-*-ms-symbol\"." | |
887 | :type `(choice | |
888 | ,@(mapcar #'(lambda (x) (list 'const x)) | |
889 | woman-symbol-font-list) | |
890 | string) | |
891 | :set #'(lambda (symbol value) | |
892 | (set-default symbol value) | |
893 | (if woman-use-symbols | |
894 | (set-face-font 'woman-symbol-face value))) | |
895 | :group 'woman-faces) | |
896 | ||
897 | ) | |
898 | ||
899 | (defvar woman-use-symbols nil) ; for non windows-nt | |
900 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
901 | ||
902 | \f | |
903 | ;;; Internal variables: | |
904 | ||
905 | (defconst woman-justify-list | |
906 | '(left right center full) | |
907 | "Justify styles for `fill-region-as-paragraph'.") | |
908 | (defconst woman-adjust-left 0 ; == adjust off, noadjust | |
909 | "Adjustment indicator `l' -- adjust left margin only.") | |
910 | (defconst woman-adjust-right 1 | |
911 | "Adjustment indicator `r' -- adjust right margin only.") | |
912 | (defconst woman-adjust-center 2 | |
913 | "Adjustment indicator `c' -- center.") | |
914 | (defconst woman-adjust-both 3 ; default -- adj,both | |
915 | "Adjustment indicator `b' or `n' -- adjust both margins.") | |
916 | ||
917 | (defvar woman-adjust woman-adjust-both | |
918 | "Current adjustment number-register value.") | |
919 | (defvar woman-adjust-previous woman-adjust | |
920 | "Previous adjustment number-register value.") | |
921 | (defvar woman-justify | |
922 | (nth woman-adjust woman-justify-list) ; use vector? | |
923 | "Current justification style for `fill-region-as-paragraph'.") | |
924 | (defvar woman-justify-previous woman-justify | |
925 | "Previous justification style for `fill-region-as-paragraph'.") | |
926 | ||
927 | (defvar woman-left-margin woman-default-indent | |
928 | "Current left margin.") | |
929 | (defvar woman-prevailing-indent woman-default-indent | |
930 | "Current prevailing indent.") | |
931 | (defvar woman-interparagraph-distance 1 | |
932 | "Interparagraph distance in lines. | |
933 | Set by .PD; used by .SH, .SS, .TP, .LP, .PP, .P, .IP, .HP.") | |
934 | (defvar woman-leave-blank-lines nil | |
935 | "Blank lines to leave as vertical space.") | |
936 | (defconst woman-tab-width 5 | |
937 | "Default tab width set by -man macros.") | |
938 | (defvar woman-nofill nil | |
939 | "Current fill mode: nil for filling.") | |
940 | (defvar woman-RS-left-margin nil | |
941 | "Left margin stack for nested use of `.RS/.RE'.") | |
942 | (defvar woman-RS-prevailing-indent nil | |
943 | "Prevailing indent stack for nested use of `.RS/.RE'.") | |
944 | (defvar woman-nospace nil | |
945 | "Current no-space mode: nil for normal spacing. | |
946 | Set by `.ns' request; reset by any output or `.rs' request") | |
947 | ||
948 | (defsubst woman-reset-nospace () | |
949 | "Make woman-nospace be nil." | |
950 | (setq woman-nospace nil)) | |
951 | ||
952 | (defconst woman-mode-line-format | |
953 | ;; This is essentially the Man-mode format with page numbers removed | |
954 | ;; and line numbers added. (Online documents do not have pages, but | |
955 | ;; they do have lines!) | |
956 | '("-" mode-line-mule-info mode-line-modified | |
957 | mode-line-frame-identification mode-line-buffer-identification | |
958 | " " global-mode-string | |
959 | " %[(WoMan" mode-line-process minor-mode-alist ")%]--" | |
960 | (line-number-mode "L%l--") | |
961 | (-3 . "%p") "-%-") | |
962 | "Mode line format for WoMan buffer.") | |
963 | ||
964 | (defconst woman-request-regexp "^[.'][ \t]*\\(\\S +\\) *" | |
965 | ;; Was "^\\.[ \t]*\\([a-z0-9]+\\) *" but cvs.1 uses a macro named | |
966 | ;; "`" and CGI.man uses a macro named "''"! | |
967 | ;; CGI.man uses ' as control character in places -- it *should* | |
968 | ;; suppress breaks! | |
969 | ;; Could end with "\\( +\\|$\\)" instead of " *" | |
970 | "Regexp to match a ?roff request plus trailing white space.") | |
971 | ||
972 | (defvar woman-imenu-done nil | |
973 | "Buffer-local: set to true if `woman-imenu' has been called.") | |
974 | (make-variable-buffer-local 'woman-imenu-done) | |
975 | ||
976 | ;; From imenu.el -- needed when reformatting a file in its old buffer. | |
977 | ;; The latest buffer index used to update the menu bar menu. | |
978 | (eval-when-compile | |
979 | (require 'imenu)) | |
980 | (make-variable-buffer-local 'imenu--last-menubar-index-alist) | |
981 | ||
982 | (defvar woman-buffer-alist nil | |
983 | "An alist of WoMan buffers that are already decoded. | |
984 | Each element is of the form (FILE-NAME BUFFER-NAME).") | |
985 | ||
986 | (defvar woman-buffer-number 0 | |
987 | "Ordinal number of current buffer entry in `woman-buffer-alist'. | |
988 | The ordinal numbers start from 0.") | |
989 | ||
990 | \f | |
991 | ;;; Specialized utility functions: | |
992 | ||
993 | ;;; Fast deletion without saving on the kill ring (cf. simple.el): | |
994 | ||
995 | (defun woman-delete-line (&optional arg) | |
996 | "Delete the rest of the current line; if all-blank line, delete thru newline. | |
997 | With a numeric argument ARG, delete that many lines from point. | |
998 | Negative arguments delete lines backward." | |
999 | ;; This is a non-interactive version of kill-line in simple.el that | |
1000 | ;; deletes instead of killing and assumes kill-whole-line is nil, | |
1001 | ;; which is essential! | |
1002 | (delete-region (point) | |
1003 | (progn | |
1004 | (if arg | |
1005 | (forward-line arg) | |
1006 | (if (eobp) | |
1007 | (signal 'end-of-buffer nil)) | |
1008 | (if (looking-at "[ \t]*$") | |
1009 | (forward-line 1) | |
1010 | (end-of-line))) | |
1011 | (point)))) | |
1012 | ||
1013 | (defsubst woman-delete-whole-line () | |
1014 | "Delete current line from beginning including eol." | |
1015 | (beginning-of-line) | |
1016 | (woman-delete-line 1)) | |
1017 | ||
1018 | (defsubst woman-delete-following-space () | |
1019 | "Delete all spaces and tabs FOLLOWING point (cf. `delete-horizontal-space')." | |
1020 | ;; cf. delete-horizontal-space in simple.el: | |
1021 | (delete-region (point) (progn (skip-chars-forward " \t") (point)))) | |
1022 | ||
1023 | (defsubst woman-delete-match (subexp) | |
1024 | "Delete subexpression SUBEXP of buffer text matched by last search." | |
1025 | (delete-region (match-beginning subexp) (match-end subexp))) | |
1026 | ||
1027 | ;; delete-char does not kill by default | |
1028 | ;; delete-backward-char does not kill by default | |
1029 | ;; delete-horizontal-space does not kill | |
1030 | ;; delete-blank-lines does not kill | |
1031 | ||
1032 | \f | |
1033 | ;;; File handling: | |
1034 | ||
1035 | (defvar woman-expanded-directory-path nil | |
1036 | "Expanded directory list cache. Resetting to nil forces update.") | |
1037 | ||
1038 | (defvar woman-topic-all-completions nil | |
1039 | "Expanded topic alist cache. Resetting to nil forces update.") | |
1040 | ||
1041 | ;;;###autoload | |
1042 | (defun woman (&optional topic re-cache) | |
1043 | "Browse a UN*X man page for TOPIC WithOut using a `man' program. | |
1044 | The major browsing mode used is essentially the standard Man mode. | |
1045 | Choose the filename for the man page using completion, based on the | |
1046 | topic selected from the directories specified in `woman-manpath' and | |
1047 | `woman-path'. The directory expansions and topics are cached for | |
1048 | speed, but a non-nil interactive argument forces the caches to be | |
1049 | updated (e.g. to re-interpret the current directory). | |
1050 | ||
1051 | Used non-interactively, arguments are optional: if they are given then | |
1052 | the argument TOPIC should be a topic string and the RE-CACHE may be | |
1053 | non-nil to force re-caching." | |
1054 | (interactive (list nil current-prefix-arg)) | |
1055 | ;; The following test is for non-interactive calls via gnudoit etc. | |
1056 | (if (or (interactive-p) (not (stringp topic)) (string-match "\\S " topic)) | |
1057 | (let ((file-name (woman-file-name topic re-cache))) | |
1058 | (if file-name | |
1059 | (woman-find-file file-name) | |
1060 | (message | |
1061 | "WoMan Error: No matching manual files found in search path") | |
1062 | (ding)) | |
1063 | ) | |
1064 | (message "WoMan Error: No topic specified in non-interactive call") | |
1065 | (ding)) | |
1066 | ) | |
1067 | ||
1068 | ;; The following allows to call WoMan via the standard Help menu | |
1069 | ;; without the need to call it first via the keyboard: | |
1070 | ||
1071 | ;; Repeated calls of `define-key-after' do not seem to matter! | |
1072 | (define-key-after menu-bar-manuals-menu [woman] | |
1073 | '(menu-item "Read Man Page (WoMan)..." woman | |
1074 | :help "Man-page documentation Without Man") t) | |
1075 | ||
1076 | (defvar woman-cached-data nil | |
1077 | "A list of cached data used to determine cache validity. | |
1078 | Set from the cache by `woman-read-directory-cache'.") | |
1079 | ||
1080 | (defun woman-cached-data () | |
1081 | "Generate a list of data used to determine cache validity. | |
1082 | Called both to generate and to check the cache!" | |
1083 | ;; Must use substituted paths because values of env vars may change! | |
1084 | (list woman-cache-level | |
1085 | (mapcar 'substitute-in-file-name woman-manpath) | |
1086 | (mapcar 'substitute-in-file-name woman-path))) | |
1087 | ||
1088 | (defun woman-read-directory-cache () | |
1089 | "Load the directory and topic cache. | |
1090 | The cache is loaded from the file named precisely as specified by the | |
1091 | variable `woman-cache-filename'. | |
1092 | Value is t if the file exists, nil otherwise." | |
1093 | (and | |
1094 | woman-cache-filename | |
1095 | (load woman-cache-filename t nil t) ; file exists | |
1096 | (equal woman-cached-data (woman-cached-data)))) ; cache valid | |
1097 | ||
1098 | (defun woman-write-directory-cache () | |
1099 | "Save the directory and topic cache. | |
1100 | The directory and topic cache is written to the file named precisely as | |
1101 | specified by the variable `woman-cache-filename'." | |
1102 | (if woman-cache-filename | |
1103 | (save-excursion ; to restore current buffer | |
1104 | ;; Make a temporary buffer; name starting with space "hides" it. | |
1105 | (let ((standard-output | |
1106 | (set-buffer (generate-new-buffer "WoMan tmp buffer"))) | |
1107 | (backup-inhibited t)) | |
1108 | ;; (switch-to-buffer standard-output t) ; only for debugging | |
1109 | (buffer-disable-undo standard-output) | |
1110 | (princ | |
1111 | ";;; WoMan directory and topic cache -- generated automatically\n") | |
1112 | ||
1113 | ;; For data validity check: | |
1114 | `(setq woman-cached-data ',(woman-cached-data))) | |
1115 | ||
1116 | `(setq woman-expanded-directory-path | |
1117 | ',woman-expanded-directory-path)) | |
1118 | ||
1119 | `(setq woman-topic-all-completions | |
1120 | ',woman-topic-all-completions)) | |
1121 | (write-file woman-cache-filename) ; write CURRENT buffer | |
1122 | (kill-buffer standard-output) | |
1123 | )))) | |
1124 | ||
1125 | (defvar woman-topic-history nil "Topic read history.") | |
1126 | (defvar woman-file-history nil "File-name read history.") | |
1127 | ||
1128 | (defun woman-file-name (topic &optional re-cache) | |
1129 | "Get the name of the UN*X man-page file describing a chosen TOPIC. | |
1130 | When called interactively, the word at point may be used as the topic | |
1131 | or initial topic suggestion, subject to the value of the user option | |
1132 | `woman-topic-at-point'. | |
1133 | Optional argument RE-CACHE, if non-nil, forces the cache to be re-read. | |
1134 | Value is nil if no file can be found." | |
1135 | ;; Handle the caching of the directory and topic lists: | |
1136 | (if (and (not re-cache) | |
1137 | (or | |
1138 | (and woman-expanded-directory-path woman-topic-all-completions) | |
1139 | (woman-read-directory-cache))) | |
1140 | () | |
1141 | (message "Building list of manual directory expansions...") | |
1142 | (setq woman-expanded-directory-path | |
1143 | (woman-expand-directory-path woman-manpath woman-path)) | |
1144 | (message "Building completion list of all manual topics...") | |
1145 | (setq woman-topic-all-completions | |
1146 | (woman-topic-all-completions woman-expanded-directory-path)) | |
1147 | (woman-write-directory-cache)) | |
1148 | ;; There is a problem in that I want to offer case-insensitive | |
1149 | ;; completions, but to return only a case-sensitive match. This | |
1150 | ;; does not seem to work properly by default, so I re-do the | |
1151 | ;; completion if necessary. | |
1152 | (let (files) | |
1153 | (or (stringp topic) | |
1154 | (and (eq t | |
1155 | (if (boundp 'woman-topic-at-point) | |
1156 | woman-topic-at-point | |
1157 | ;; Was let-bound when file loaded, so ... | |
1158 | (setq woman-topic-at-point woman-topic-at-point-default))) | |
1159 | (setq topic | |
1160 | (current-word t)) ; only within or adjacent to word | |
1161 | (assoc topic woman-topic-all-completions)) | |
1162 | (setq topic | |
1163 | (completing-read | |
1164 | "Manual entry: " | |
1165 | woman-topic-all-completions nil 1 | |
1166 | ;; Initial input suggestion (was nil), with | |
1167 | ;; cursor at left ready to kill suggestion!: | |
1168 | (and woman-topic-at-point | |
1169 | (cons (current-word) 0)) ; nearest word | |
1170 | 'woman-topic-history))) | |
1171 | ;; Note that completing-read always returns a string. | |
1172 | (if (= (length topic) 0) | |
1173 | nil ; no topic, so no file! | |
1174 | (cond | |
1175 | ((setq files (woman-file-name-all-completions topic))) | |
1176 | ;; Complete topic more carefully, i.e. use the completion | |
1177 | ;; rather than the string entered by the user: | |
1178 | ((setq files (all-completions topic woman-topic-all-completions)) | |
1179 | (while (/= (length topic) (length (car files))) | |
1180 | (setq files (cdr files))) | |
1181 | (setq files (woman-file-name-all-completions (car files))))) | |
1182 | (cond | |
1183 | ((null files) nil) ; no file found for topic. | |
1184 | ((null (cdr files)) (car (car files))) ; only 1 file for topic. | |
1185 | (t | |
1186 | ;; Multiple files for topic, so must select 1. | |
1187 | ;; Unread the command event (TAB = ?\t = 9) that runs the command | |
1188 | ;; `minibuffer-complete' in order to automatically complete the | |
1189 | ;; minibuffer contents as far as possible. | |
1190 | (setq unread-command-events '(9)) ; and delete any type-ahead! | |
1191 | (completing-read "Manual file: " files nil 1 | |
1192 | (try-completion "" files) 'woman-file-history))) | |
1193 | ))) | |
1194 | ||
1195 | (defun woman-select (predicate list) | |
1196 | "Select unique elements for which PREDICATE is true in LIST. | |
1197 | \(Note that this function changes the value of LIST.)" | |
1198 | ;; Intended to be fast by avoiding recursion and list copying. | |
1199 | (while (and list | |
1200 | (or | |
1201 | (member (car list) (cdr list)) | |
1202 | (not (funcall predicate (car list))))) | |
1203 | (setq list (cdr list))) | |
1204 | (if list | |
1205 | (let ((newlist list) cdr_list) | |
1206 | (while (setq cdr_list (cdr list)) | |
1207 | (if (and | |
1208 | (not (member (car cdr_list) (cdr cdr_list))) | |
1209 | (funcall predicate (car cdr_list))) | |
1210 | (setq list cdr_list) | |
1211 | (setcdr list (cdr cdr_list))) | |
1212 | ) | |
1213 | newlist))) | |
1214 | ||
1215 | (defun woman-file-readable-p (dir) | |
1216 | "Return t if DIR is readable, otherwise log a warning." | |
1217 | (or (file-readable-p dir) | |
1218 | (WoMan-warn "Ignoring unreadable `manpath' directory tree `%s'!" dir))) | |
1219 | ||
1220 | (defun woman-directory-files (head dir) | |
1221 | "Return a sorted list of files in directory HEAD matching the regexp in DIR. | |
1222 | Value is a sorted list of the absolute pathnames of all the files in | |
1223 | directory HEAD, or the current directory if HEAD is nil, that match the | |
1224 | regexp that is the final component of DIR. Log a warning if list is empty." | |
1225 | (or (directory-files | |
1226 | (or head (directory-file-name default-directory)) ; was "." | |
1227 | t | |
1228 | (file-name-nondirectory dir)) | |
1229 | (WoMan-warn "No directories match `woman-path' entry `%s'!" dir))) | |
1230 | ||
1231 | (defun woman-file-accessible-directory-p (dir) | |
1232 | "Return t if DIR is accessible, otherwise log a warning." | |
1233 | (or (file-accessible-directory-p dir) | |
1234 | (WoMan-warn "Ignoring inaccessible `man-page' directory `%s'!" dir))) | |
1235 | ||
1236 | (defun woman-expand-directory-path (woman-manpath woman-path) | |
1237 | "Expand manual directories in WOMAN-MANPATH and WOMAN-PATH. | |
1238 | WOMAN-MANPATH should be the list of the general manual directories, while | |
1239 | WOMAN-PATH should be the list of specific manual directory regexps. | |
1240 | Ignore any paths that are unreadable or not directories." | |
1241 | ;; Allow each path to be a single string or a list of strings: | |
1242 | (if (not (listp woman-manpath)) (setq woman-manpath (list woman-manpath))) | |
1243 | (if (not (listp woman-path)) (setq woman-path (list woman-path))) | |
1244 | (let (dir head dirs) | |
1245 | (while woman-manpath | |
1246 | (setq dir (car woman-manpath) | |
1247 | woman-manpath (cdr woman-manpath)) | |
1248 | (if (and dir (woman-file-readable-p dir)) | |
1249 | ;; NB: `parse-colon-path' creates null elements for | |
1250 | ;; redundant (semi-)colons and trailing `/'s! | |
1251 | ;; If does not actually matter here if dir ends with `/'. | |
1252 | ;; Need regexp "man" here to avoid "cat?", `.', `..', etc. | |
1253 | (setq dir (woman-canonicalize-dir dir) | |
1254 | dirs (nconc dirs (directory-files | |
1255 | dir t woman-manpath-man-regexp))))) | |
1256 | (while woman-path | |
1257 | (setq dir (car woman-path) | |
1258 | woman-path (cdr woman-path)) | |
1259 | (if (or (null dir) | |
1260 | (null (setq dir (woman-canonicalize-dir dir) | |
1261 | head (file-name-directory dir))) | |
1262 | (woman-file-readable-p head)) | |
1263 | (setq dirs | |
1264 | (if dir | |
1265 | (nconc dirs (woman-directory-files head dir)) | |
1266 | (cons (directory-file-name default-directory) dirs)) | |
1267 | ;; was "." -- at head of list for later filtering | |
1268 | ))) | |
1269 | (woman-select 'woman-file-accessible-directory-p dirs))) | |
1270 | ||
1271 | (defun woman-canonicalize-dir (dir) | |
1272 | "Canonicalize a directory name DIR. | |
1273 | Any UN*X-style environment variables are evaluated first." | |
1274 | (setq dir (expand-file-name (substitute-in-file-name dir))) | |
1275 | ;; A path that ends with / matches all directories in it, | |
1276 | ;; including `.' and `..', so remove any trailing / !!! | |
1277 | (if (string= (substring dir -1) "/") | |
1278 | (setq dir (substring dir 0 -1))) | |
1279 | (if (memq system-type '(windows-nt ms-dos)) ; what else? | |
1280 | ;; Match capitalization used by `file-name-directory': | |
1281 | (setq dir (concat (file-name-directory dir) | |
1282 | (file-name-nondirectory dir)))) | |
1283 | dir) | |
1284 | ||
1285 | (defsubst woman-not-member (dir path) | |
1286 | "Return true if DIR is not a member of the list PATH. | |
1287 | If DIR is `.' it is first replaced by the current directory." | |
1288 | (not (member dir path))) | |
1289 | ||
1290 | (defun woman-topic-all-completions (path) | |
1291 | "Return an alist of the man files in all man directories in the list PATH. | |
1292 | The cdr of each alist element is the path-index / filename." | |
1293 | ;; Support 3 levels of caching: each element of the alist `files' | |
1294 | ;; will be a list of the first `woman-cache-level' elements of the | |
1295 | ;; following list: (topic path-index filename). This alist `files' | |
1296 | ;; is re-processed by `woman-topic-all-completions-merge'. | |
1297 | (let (dir files (path-index 0)) ; indexing starts at zero | |
1298 | (while path | |
1299 | (setq dir (car path) | |
1300 | path (cdr path)) | |
1301 | (if (woman-not-member dir path) ; use each directory only once! | |
1302 | (setq files | |
1303 | (nconc files | |
1304 | (woman-topic-all-completions-1 dir path-index)))) | |
1305 | (setq path-index (1+ path-index))) | |
1306 | ;; Uniquefy topics: | |
1307 | (woman-topic-all-completions-merge files))) | |
1308 | ||
1309 | (defsubst woman-list-n (n &rest args) | |
1310 | "Return a list of at most the first N of the arguments ARGS. | |
1311 | Treats N < 1 as if N = 1." | |
1312 | (if (< n (length args)) | |
1313 | (setcdr (nthcdr (1- n) args) nil)) | |
1314 | args) | |
1315 | ||
1316 | (defun woman-topic-all-completions-1 (dir path-index) | |
1317 | "Return an alist of the man files in directory DIR with index PATH-INDEX. | |
1318 | The cdr of each alist element is the path-index / filename." | |
1319 | (let ((old (directory-files dir nil woman-file-regexp)) | |
1320 | new file) | |
1321 | ;; Convert list to alist of non-directory files: | |
1322 | (while old | |
1323 | (setq file (car old) | |
1324 | old (cdr old)) | |
1325 | (if (file-directory-p file) | |
1326 | () | |
1327 | (setq new (cons | |
1328 | (woman-list-n | |
1329 | woman-cache-level | |
1330 | (file-name-sans-extension | |
1331 | (if (string-match woman-file-compression-regexp file) | |
1332 | (file-name-sans-extension file) | |
1333 | file)) | |
1334 | path-index | |
1335 | file) | |
1336 | new)))) | |
1337 | new)) | |
1338 | ||
1339 | (defun woman-topic-all-completions-merge (alist) | |
1340 | "Merge the alist ALIST so that the keys are unique. | |
1341 | Also, make each path-info component into a list. | |
1342 | \(Note that this function changes the value of ALIST.)" | |
1343 | ;; Intended to be fast by avoiding recursion and list copying. | |
1344 | (if (> woman-cache-level 1) | |
1345 | (let ((newalist alist)) | |
1346 | (while newalist | |
1347 | (let ((tail newalist) (topic (car (car newalist)))) | |
1348 | ;; Make the path-info into a list: | |
1349 | (setcdr (car newalist) (list (cdr (car newalist)))) | |
1350 | (while tail | |
1351 | (while (and tail (not (string= topic (car (car (cdr tail)))))) | |
1352 | (setq tail (cdr tail))) | |
1353 | (if tail ; merge path-info into (car newalist) | |
1354 | (let ((path-info (cdr (car (cdr tail))))) | |
1355 | (if (member path-info (cdr (car newalist))) | |
1356 | () | |
1357 | ;; Make the path-info into a list: | |
1358 | (nconc (car newalist) (list path-info))) | |
1359 | (setcdr tail (cdr (cdr tail)))) | |
1360 | )) | |
1361 | (setq newalist (cdr newalist)))) | |
1362 | alist) | |
1363 | ;; woman-cache-level = 1 => elements are single-element lists ... | |
1364 | (while (and alist (member (car alist) (cdr alist))) | |
1365 | (setq alist (cdr alist))) | |
1366 | (if alist | |
1367 | (let ((newalist alist) cdr_alist) | |
1368 | (while (setq cdr_alist (cdr alist)) | |
1369 | (if (not (member (car cdr_alist) (cdr cdr_alist))) | |
1370 | (setq alist cdr_alist) | |
1371 | (setcdr alist (cdr cdr_alist))) | |
1372 | ) | |
1373 | newalist)))) | |
1374 | ||
1375 | (defun woman-file-name-all-completions (topic) | |
1376 | "Return an alist of the files in all man directories that match TOPIC." | |
1377 | ;; Support 3 levels of caching: each element of | |
1378 | ;; woman-topic-all-completions is a list of one of the forms: | |
1379 | ;; (topic) | |
1380 | ;; (topic (path-index) (path-index) ... ) | |
1381 | ;; (topic (path-index filename) (path-index filename) ... ) | |
1382 | ;; where the are no duplicates in the value lists. | |
1383 | ;; Topic must match first `word' of filename, so ... | |
1384 | (let ((topic-regexp | |
1385 | (concat | |
1386 | "\\`" (regexp-quote topic) ; first `word' | |
1387 | "\\(\\..+\\)*" ; optional subsequent `words' | |
1388 | woman-file-regexp)) ; extension | |
1389 | (topics woman-topic-all-completions) | |
1390 | (path woman-expanded-directory-path) | |
1391 | dir files) | |
1392 | (if (cdr (car topics)) | |
1393 | ;; Use cached path-info to locate files for each topic: | |
1394 | (let ((path-info (cdr (assoc topic topics))) | |
1395 | filename) | |
1396 | (while path-info | |
1397 | (setq dir (nth (car (car path-info)) path) | |
1398 | filename (car (cdr (car path-info))) | |
1399 | path-info (cdr path-info) | |
1400 | files (nconc files | |
1401 | ;; Find the actual file name: | |
1402 | (if filename | |
1403 | (list (concat dir "/" filename)) | |
1404 | (directory-files dir t topic-regexp) | |
1405 | ))))) | |
1406 | ;; Search path for the files for each topic: | |
1407 | (while path | |
1408 | (setq dir (car path) | |
1409 | path (cdr path)) | |
1410 | (if (woman-not-member dir path) ; use each directory only once! | |
1411 | (setq files (nconc files | |
1412 | (directory-files dir t topic-regexp)))) | |
1413 | )) | |
1414 | (mapcar 'list files) | |
1415 | )) | |
1416 | ||
1417 | ||
1418 | ;;; dired support | |
1419 | ||
1420 | (defun woman-dired-define-key (key) | |
1421 | "Bind the argument KEY to the command `woman-dired-find-file'." | |
1422 | (define-key dired-mode-map key 'woman-dired-find-file)) | |
1423 | ||
1424 | (defsubst woman-dired-define-key-maybe (key) | |
1425 | "If KEY is undefined in Dired, bind it to command `woman-dired-find-file'." | |
1426 | (if (eq (lookup-key dired-mode-map key) 'undefined) | |
1427 | (woman-dired-define-key key))) | |
1428 | ||
1429 | (defun woman-dired-define-keys () | |
1430 | "Define dired keys to run WoMan according to `woman-dired-keys'." | |
1431 | (if woman-dired-keys | |
1432 | (if (listp woman-dired-keys) | |
1433 | (mapcar 'woman-dired-define-key woman-dired-keys) | |
1434 | (woman-dired-define-key-maybe "w") | |
1435 | (woman-dired-define-key-maybe "W"))) | |
1436 | (define-key-after (lookup-key dired-mode-map [menu-bar immediate]) | |
1437 | [woman] '("Read Man Page (WoMan)" . woman-dired-find-file) 'view)) | |
1438 | ||
1439 | (if (featurep 'dired) | |
1440 | (woman-dired-define-keys) | |
1441 | (add-hook 'dired-mode-hook 'woman-dired-define-keys)) | |
1442 | ||
1443 | ;;;###autoload | |
1444 | (defun woman-dired-find-file () | |
1445 | "In dired, run the WoMan man-page browser on this file." | |
1446 | (interactive) | |
1447 | ;; dired-get-filename is defined in dired.el | |
1448 | (woman-find-file (dired-get-filename))) | |
1449 | ||
1450 | ||
1451 | ;;; tar-mode support | |
1452 | ||
1453 | (defun woman-tar-extract-file () | |
1454 | "In tar mode, run the WoMan man-page browser on this file." | |
1455 | (interactive) | |
1456 | (or (eq major-mode 'tar-mode) | |
1457 | (error "`woman-tar-extract-file' can be used only in `tar-mode'")) | |
1458 | (buffer-disable-undo) | |
1459 | (let (global-font-lock-mode) | |
1460 | (funcall (symbol-function 'tar-extract)) ; defined in tar-mode | |
1461 | (let ((WoMan-current-file buffer-file-name)) ; used for message logging | |
1462 | (rename-buffer | |
1463 | (woman-make-bufname (file-name-nondirectory buffer-file-name))) | |
1464 | (woman-process-buffer) | |
1465 | (goto-char (point-min))))) | |
1466 | ||
1467 | ;; There is currently no `tar-mode-hook' so use ... | |
1468 | (eval-after-load "tar-mode" | |
1469 | '(progn | |
1470 | (define-key tar-mode-map "w" 'woman-tar-extract-file) | |
1471 | (define-key-after (lookup-key tar-mode-map [menu-bar immediate]) | |
1472 | [woman] '("Read Man Page (WoMan)" . woman-tar-extract-file) 'view))) | |
1473 | ||
1474 | ||
1475 | (defvar woman-last-file-name nil | |
1476 | "The full pathname of the last file formatted by WoMan.") | |
1477 | ||
1478 | (defun woman-reformat-last-file () | |
1479 | "Reformat last file, e.g. after changing fill column." | |
1480 | (interactive) | |
1481 | (if woman-last-file-name | |
1482 | (woman-find-file woman-last-file-name t) | |
1483 | (call-interactively 'woman-find-file))) | |
1484 | ||
1485 | ;;;###autoload | |
1486 | (defun woman-find-file (file-name &optional reformat) | |
1487 | "Find, decode and browse a specific UN*X man-page source file FILE-NAME. | |
1488 | Use existing buffer if possible; reformat only if prefix arg given. | |
1489 | When called interactively, optional argument REFORMAT forces reformatting | |
1490 | of existing WoMan buffers formatted earlier. | |
1491 | No external programs are used, except that `gunzip' will be used to | |
1492 | decompress the file if appropriate. See the documentation for the | |
1493 | `woman' command for further details." | |
1494 | (interactive "fBrowse UN*X manual file: \nP") | |
1495 | (setq woman-last-file-name | |
1496 | (setq file-name (expand-file-name file-name))) ; to canonicalize | |
1497 | (let ((alist-tail woman-buffer-alist) exists) | |
1498 | (setq woman-buffer-number 0) | |
1499 | (while (and alist-tail (not (string= file-name (car (car alist-tail))))) | |
1500 | (setq alist-tail (cdr alist-tail) | |
1501 | woman-buffer-number (1+ woman-buffer-number))) | |
1502 | (or (and (setq exists | |
1503 | (and alist-tail (WoMan-find-buffer))) ; buffer exists | |
1504 | (not reformat)) | |
1505 | ;; Format new buffer or reformat current buffer: | |
1506 | (let* ((bufname (file-name-nondirectory file-name)) | |
1507 | (case-fold-search t) | |
1508 | (compressed | |
1509 | (not (not (string-match woman-file-compression-regexp bufname))))) | |
1510 | (if compressed | |
1511 | (setq bufname (file-name-sans-extension bufname))) | |
1512 | (setq bufname (if exists | |
1513 | (buffer-name) | |
1514 | (woman-make-bufname bufname))) | |
1515 | (woman-really-find-file file-name compressed bufname) | |
1516 | (or exists | |
1517 | (setq woman-buffer-alist | |
1518 | (cons (cons file-name bufname) woman-buffer-alist) | |
1519 | woman-buffer-number 0)) | |
1520 | ))) | |
1521 | (Man-build-section-alist) | |
1522 | (Man-build-references-alist) | |
1523 | (goto-char (point-min))) | |
1524 | ||
1525 | (defun woman-make-bufname (bufname) | |
1526 | "Create an unambiguous buffer name from BUFNAME." | |
1527 | (let ((dot (string-match "\\." bufname))) | |
1528 | (if dot (setq bufname (concat | |
1529 | (substring bufname (1+ dot)) " " | |
1530 | (substring bufname 0 dot)))) | |
1531 | (generate-new-buffer-name ; ensure uniqueness | |
1532 | (concat "*WoMan " bufname "*")))) | |
1533 | ||
1534 | (defun woman-really-find-file (filename compressed bufname) | |
1535 | "Find, decompress, and decode a UN*X man page FILENAME. | |
1536 | If COMPRESSED is non-nil, turn on `auto-compression-mode' to | |
1537 | decompress the file if necessary. Set buffer name and major mode. | |
1538 | Do not call directly!" | |
1539 | (let ((WoMan-current-file filename)) ; used for message logging | |
1540 | (switch-to-buffer (get-buffer-create bufname)) | |
1541 | (buffer-disable-undo) | |
1542 | (setq buffer-read-only nil) | |
1543 | (erase-buffer) ; NEEDED for reformat | |
1544 | (woman-insert-file-contents filename compressed) | |
1545 | ;; Set buffer's default directory to that of the file. | |
1546 | (setq default-directory (file-name-directory filename)) | |
1547 | (set (make-local-variable 'backup-inhibited) t) | |
1548 | (set-visited-file-name "") | |
1549 | (woman-process-buffer))) | |
1550 | ||
1551 | (defun woman-process-buffer () | |
1552 | "The second half of `woman-really-find-file'!" | |
1553 | (interactive) | |
1554 | ;; Check (crudely) that this really is likely to be in UN*X | |
1555 | ;; man-page source format, assuming we are at point-min: | |
1556 | (goto-char (point-min)) | |
1557 | (if (re-search-forward "^[.']" 1000 t) | |
1558 | (woman-decode-buffer) | |
1559 | (message | |
1560 | "File appears to be pre-formatted -- using source file may be better.") | |
1561 | (woman-man-buffer)) | |
1562 | (woman-mode)) | |
1563 | ||
1564 | (defun woman-man-buffer () | |
1565 | "Post-process an nroff-preformatted man buffer." | |
1566 | ;; Kill all leading whitespace: | |
1567 | (if (looking-at "\\s-+") (woman-delete-match 0)) | |
1568 | ;; Delete all page footer/header pairs: | |
1569 | (re-search-forward ".*") ; match header | |
1570 | ;; Footer conventionally has page number at right, so ... | |
1571 | (let ((regex (concat | |
1572 | "^.*[0-9]\n\\s-*" ; footer and following blank lines | |
1573 | (regexp-quote (match-string 0)) ; header | |
1574 | "\\s-*\n"))) ; following blank lines | |
1575 | (while (re-search-forward regex nil 1) ; finish at eob | |
1576 | (woman-delete-match 0))) | |
1577 | ;; Delete last text line (footer) and all following blank lines: | |
1578 | (re-search-backward "\\S-") | |
1579 | (beginning-of-line) | |
1580 | (if (looking-at ".*[0-9]$") | |
1581 | (delete-region (point) (point-max))) | |
1582 | ||
1583 | ;; Squeeze multiple blank lines: | |
1584 | (goto-char (point-min)) | |
1585 | (while (re-search-forward "^[ \t]*\n\\([ \t]*\n\\)+" nil t) | |
1586 | (replace-match "\n" t t)) | |
1587 | ||
1588 | ;; Interpret overprinting to indicate bold face: | |
1589 | (goto-char (point-min)) | |
1590 | (while (re-search-forward "\\(.\\)\\(\\(\b\\1\\)+\\)" nil t) | |
1591 | (woman-delete-match 2) | |
1592 | (woman-set-face (1- (point)) (point) 'woman-bold-face)) | |
1593 | ||
1594 | ;; Interpret underlining to indicate italic face: | |
1595 | ;; (Must be AFTER emboldening to interpret bold _ correctly!) | |
1596 | (goto-char (point-min)) | |
1597 | (while (search-forward "_\b" nil t) | |
1598 | (delete-char -2) | |
1599 | (woman-set-face (point) (1+ (point)) 'woman-italic-face)) | |
1600 | ||
1601 | ;; Leave any other uninterpreted ^H's in the buffer for now! (They | |
1602 | ;; might indicate composite special characters, which could be | |
1603 | ;; interpreted if I knew what to expect.) | |
1604 | ||
1605 | ;; Optionally embolden section and subsection headings | |
1606 | ;; (cf. `woman-imenu-generic-expression'): | |
1607 | (cond | |
1608 | (woman-bold-headings | |
1609 | (goto-char (point-min)) | |
1610 | (forward-line) | |
1611 | (while (re-search-forward "^\\( \\)?\\([A-Z].*\\)" nil t) | |
1612 | (woman-set-face (match-beginning 2) (match-end 2) 'woman-bold-face)))) | |
1613 | ) | |
1614 | ||
1615 | (defun woman-insert-file-contents (filename compressed) | |
1616 | "Insert file FILENAME into the current buffer. | |
1617 | If COMPRESSED is t, or is non-nil and the filename implies compression, | |
1618 | turn on `auto-compression-mode' to decompress the file. | |
1619 | Leave point at end of new text. Return length of inserted text." | |
1620 | ;; Leaves point at end of inserted text in GNU Emacs 20.3, but at | |
1621 | ;; start in 19.34! | |
1622 | (save-excursion | |
1623 | (let ((case-fold-search t)) | |
1624 | ;; Co-operate with auto-compression mode: | |
1625 | (if (and compressed | |
1626 | (or (eq compressed t) | |
1627 | (string-match woman-file-compression-regexp filename)) | |
1628 | ;; (not auto-compression-mode) | |
1629 | (not (rassq 'jka-compr-handler file-name-handler-alist)) ) | |
1630 | ;; (error "Compressed file requires Auto File Decompression turned on") | |
1631 | (auto-compression-mode 1)) | |
1632 | (nth 1 | |
1633 | (condition-case () | |
1634 | (insert-file-contents filename nil) | |
1635 | (file-error | |
1636 | ;; Run find-file-not-found-hooks until one returns non-nil. | |
1637 | ;; (run-hook-with-args-until-success 'find-file-not-found-hooks) | |
1638 | (insert "\n***** File " filename " not found! *****\n\n") | |
1639 | ))) | |
1640 | ))) | |
1641 | ||
1642 | \f | |
1643 | ;;; Major mode (Man) interface: | |
1644 | ||
1645 | (defvar woman-mode-map nil "Keymap for woman mode.") | |
1646 | ||
1647 | (if woman-mode-map | |
1648 | () | |
1649 | ;; Set up the keymap, mostly inherited from Man-mode-map: | |
1650 | (setq woman-mode-map (make-sparse-keymap)) | |
1651 | (set-keymap-parent woman-mode-map Man-mode-map) | |
1652 | ;; Above two lines were | |
1653 | ;; (setq woman-mode-map (cons 'keymap Man-mode-map)) | |
1654 | (define-key woman-mode-map "R" 'woman-reformat-last-file) | |
1655 | (define-key woman-mode-map "w" 'woman) | |
1656 | (define-key woman-mode-map "\en" 'WoMan-next-manpage) | |
1657 | (define-key woman-mode-map "\ep" 'WoMan-previous-manpage) | |
1658 | (define-key woman-mode-map [mouse-2] 'woman-mouse-2) | |
1659 | (define-key woman-mode-map [M-mouse-2] 'woman-mouse-2)) | |
1660 | ||
1661 | (defun woman-mouse-2 (event) | |
1662 | "Run WoMan with word under mouse as topic. | |
1663 | Require it to be mouse-highlighted unless Meta key used. | |
1664 | Argument EVENT is the invoking mouse event." | |
1665 | (interactive "e") ; mouse event | |
1666 | (let ((pos (cadr (cadr event)))) ; extract buffer position | |
1667 | (when (or (eq (car event) 'M-mouse-2) | |
1668 | (get-text-property pos 'mouse-face)) | |
1669 | (goto-char pos) | |
1670 | (woman (current-word t))))) | |
1671 | ||
1672 | ;; WoMan menu bar and pop-up menu: | |
1673 | (easy-menu-define ; (SYMBOL MAPS DOC MENU) | |
1674 | woman-menu | |
1675 | woman-mode-map | |
1676 | "WoMan Menu" | |
1677 | `("WoMan" | |
1678 | ["WoMan..." woman t] ; [NAME CALLBACK ENABLE] | |
1679 | "--" | |
1680 | ["Next Section" Man-next-section t] | |
1681 | ["Previous Section" Man-previous-section t] | |
1682 | ["Goto Section..." Man-goto-section t] | |
1683 | ["Goto See-Also Section" Man-goto-see-also-section t] | |
1684 | ["Follow Reference..." Man-follow-manual-reference t] | |
1685 | "--" | |
1686 | ["Previous WoMan Buffer" WoMan-previous-manpage t] | |
1687 | ["Next WoMan Buffer" WoMan-next-manpage t] | |
1688 | ["Bury WoMan Buffer" Man-quit t] | |
1689 | ["Kill WoMan Buffer" Man-kill t] | |
1690 | "--" | |
1691 | ;; ["Toggle Fill Frame Width" woman-toggle-fill-frame t] | |
1692 | ["Use Full Frame Width" woman-toggle-fill-frame | |
1693 | :active t :style toggle :selected woman-fill-frame] | |
1694 | ["Reformat Last File" woman-reformat-last-file t] | |
1695 | ["Use Coloured Main Faces" woman-colour-faces t] | |
1696 | ["Use Black Main Faces" woman-black-faces t] | |
1697 | ["Make Contents Menu" (woman-imenu t) (not woman-imenu-done)] | |
1698 | "--" | |
1699 | ["Describe (Wo)Man Mode" describe-mode t] | |
1700 | ["Mini Help" woman-mini-help t] | |
1701 | ,@(if (fboundp 'customize-group) | |
1702 | '(["Customize..." (customize-group 'woman) t])) | |
1703 | ["Show Version" (message "WoMan %s" woman-version) t] | |
1704 | )) | |
1705 | ||
1706 | (defun woman-mode () | |
1707 | "Turn on (most of) Man mode to browse a buffer formatted by WoMan. | |
1708 | WoMan is an ELisp emulation of much of the functionality of the Emacs | |
1709 | `man' command running the standard UN*X man and ?roff programs. | |
1710 | WoMan author: F.J.Wright@Maths.QMW.ac.uk | |
1711 | WoMan version: see `woman-version'. | |
1712 | See `Man-mode' for additional details." | |
1713 | (let ((Man-build-page-list (symbol-function 'Man-build-page-list)) | |
1714 | (Man-strip-page-headers (symbol-function 'Man-strip-page-headers)) | |
1715 | (Man-unindent (symbol-function 'Man-unindent)) | |
1716 | (Man-goto-page (symbol-function 'Man-goto-page))) | |
1717 | ;; Prevent inappropriate operations: | |
1718 | (fset 'Man-build-page-list 'ignore) | |
1719 | (fset 'Man-strip-page-headers 'ignore) | |
1720 | (fset 'Man-unindent 'ignore) | |
1721 | (fset 'Man-goto-page 'ignore) | |
1722 | (unwind-protect | |
1723 | (progn | |
1724 | (set (make-local-variable 'Man-mode-map) woman-mode-map) | |
1725 | ;; Install Man mode: | |
1726 | (Man-mode) | |
1727 | ;; Reset inappropriate definitions: | |
1728 | (setq mode-line-format woman-mode-line-format) | |
1729 | (put 'Man-mode 'mode-class 'special)) | |
1730 | ;; Restore the status quo: | |
1731 | (fset 'Man-build-page-list Man-build-page-list) | |
1732 | (fset 'Man-strip-page-headers Man-strip-page-headers) | |
1733 | (fset 'Man-unindent Man-unindent) | |
1734 | (fset 'Man-goto-page Man-goto-page) | |
1735 | ) | |
1736 | ;; Imenu support: | |
1737 | (set (make-local-variable 'imenu-generic-expression) | |
1738 | ;; `make-local-variable' in case imenu not yet loaded! | |
1739 | woman-imenu-generic-expression) | |
1740 | (set (make-local-variable 'imenu-space-replacement) " ") | |
1741 | ;; For reformat ... | |
1742 | ;; necessary when reformatting a file in its old buffer: | |
1743 | (setq imenu--last-menubar-index-alist nil) | |
1744 | ;; necessary to avoid re-installing the same imenu: | |
1745 | (setq woman-imenu-done nil) | |
1746 | (if woman-imenu (woman-imenu)) | |
1747 | (setq buffer-read-only nil) | |
1748 | (WoMan-highlight-references) | |
1749 | (setq buffer-read-only t) | |
1750 | (set-buffer-modified-p nil))) | |
1751 | ||
1752 | (defun woman-imenu (&optional redraw) | |
1753 | "Add a \"Contents\" menu to the menubar. | |
1754 | Optional argument REDRAW, if non-nil, forces mode line to be updated." | |
1755 | (interactive) | |
1756 | (if woman-imenu-done | |
1757 | ;; This is PRIMARILY to avoid a bug in imenu-add-to-menubar that | |
1758 | ;; causes it to corrupt the menu bar if it is run more than once | |
1759 | ;; in the same buffer. | |
1760 | () | |
1761 | (setq woman-imenu-done t) | |
1762 | (imenu-add-to-menubar woman-imenu-title) | |
1763 | (if redraw (force-mode-line-update)))) | |
1764 | ||
1765 | (defun woman-toggle-fill-frame () | |
1766 | "Toggle formatting to fill (most of) the width of the current frame." | |
1767 | (interactive) | |
1768 | (setq woman-fill-frame (not woman-fill-frame)) | |
1769 | (message "Woman fill column set to %s." | |
1770 | (if woman-fill-frame "frame width" woman-fill-column) | |
1771 | )) | |
1772 | ||
1773 | (defun woman-mini-help () | |
1774 | "Display WoMan commands and user options in an `apropos' buffer." | |
1775 | ;; Based on apropos-command in apropos.el | |
1776 | (interactive) | |
1777 | (require 'apropos) | |
1778 | (let ((message | |
1779 | (let ((standard-output (get-buffer-create "*Apropos*"))) | |
1780 | (print-help-return-message 'identity)))) | |
1781 | (setq apropos-accumulator | |
1782 | (apropos-internal "woman" | |
1783 | #'(lambda (symbol) | |
1784 | (or (commandp symbol) | |
1785 | (user-variable-p symbol))))) | |
1786 | ;; Filter out any inhibited symbols: | |
1787 | (let ((tem apropos-accumulator)) | |
1788 | (while tem | |
1789 | (if (get (car tem) 'apropos-inhibit) | |
1790 | (setq apropos-accumulator (delq (car tem) apropos-accumulator))) | |
1791 | (setq tem (cdr tem)))) | |
1792 | ;; Find documentation strings: | |
1793 | (let ((p apropos-accumulator) | |
1794 | doc symbol) | |
1795 | (while p | |
1796 | (setcar p (list ; must have 3 elements: | |
1797 | (setq symbol (car p)) ; 1. name | |
1798 | (if (functionp symbol) ; 2. command doc | |
1799 | (if (setq doc (documentation symbol t)) | |
1800 | (substring doc 0 (string-match "\n" doc)) | |
1801 | "(not documented)")) | |
1802 | (if (user-variable-p symbol) ; 3. variable doc | |
1803 | (if (setq doc (documentation-property | |
1804 | symbol 'variable-documentation t)) | |
1805 | (substring doc 0 (string-match "\n" doc)))))) | |
1806 | (setq p (cdr p)))) | |
1807 | ;; Output the result: | |
1808 | (and (apropos-print t nil) | |
1809 | message | |
1810 | (message message)))) | |
1811 | ||
1812 | ||
1813 | (defun WoMan-getpage-in-background (topic) | |
1814 | "Use TOPIC to start WoMan from `Man-follow-manual-reference'." | |
1815 | ;; topic is a string, generally of the form "section topic" | |
1816 | (let ((s (string-match " " topic))) | |
1817 | (if s (setq topic (substring topic (1+ s)))) | |
1818 | (woman topic))) | |
1819 | ||
1820 | (defvar WoMan-Man-start-time nil | |
1821 | "Used to record formatting time used by the `man' command.") | |
1822 | ||
1823 | (defadvice Man-getpage-in-background | |
1824 | (around Man-getpage-in-background-advice (topic) activate) | |
1825 | "Use WoMan unless invoked outside a WoMan buffer or invoked explicitly. | |
1826 | Otherwise use Man and record start of formatting time." | |
1827 | (if (and (eq mode-line-format woman-mode-line-format) | |
1828 | (not (eq (caar command-history) 'man))) | |
1829 | (WoMan-getpage-in-background topic) | |
1830 | ;; Initiates man processing | |
1831 | (setq WoMan-Man-start-time (current-time)) | |
1832 | ad-do-it)) | |
1833 | ||
1834 | (defadvice Man-bgproc-sentinel | |
1835 | (after Man-bgproc-sentinel-advice activate) | |
1836 | ;; Terminates man processing | |
1837 | "Report formatting time." | |
1838 | (let* ((time (current-time)) | |
1839 | (time (+ (* (- (car time) (car WoMan-Man-start-time)) 65536) | |
1840 | (- (cadr time) (cadr WoMan-Man-start-time))))) | |
1841 | (message "Man formatting done in %d seconds" time))) | |
1842 | ||
1843 | (defun WoMan-highlight-references () | |
1844 | "Highlight the references (in the SEE ALSO section) on mouse-over." | |
1845 | ;; Based on `Man-build-references-alist' in `man'. | |
1846 | (when (Man-find-section Man-see-also-regexp) | |
1847 | (forward-line 1) | |
1848 | (let ((end (save-excursion | |
1849 | (Man-next-section 1) | |
1850 | (point)))) | |
1851 | (back-to-indentation) | |
1852 | (while (re-search-forward Man-reference-regexp end t) | |
1853 | ;; Highlight reference when mouse is over it. | |
1854 | ;; (NB: WoMan does not hyphenate!) | |
1855 | ;; [See (elisp)Clickable Text] | |
1856 | (put-text-property (match-beginning 1) (match-end 1) | |
1857 | 'mouse-face 'highlight) | |
1858 | )))) | |
1859 | ||
1860 | \f | |
1861 | ;;; Buffer handling: | |
1862 | ||
1863 | (defun WoMan-previous-manpage () | |
1864 | "Find the previous WoMan buffer." | |
1865 | ;; Assumes currently in a WoMan buffer! | |
1866 | (interactive) | |
1867 | (WoMan-find-buffer) ; find current existing buffer | |
1868 | (if (null (cdr woman-buffer-alist)) | |
1869 | (error "No previous WoMan buffer")) | |
1870 | (if (>= (setq woman-buffer-number (1+ woman-buffer-number)) | |
1871 | (length woman-buffer-alist)) | |
1872 | (setq woman-buffer-number 0)) | |
1873 | (if (WoMan-find-buffer) | |
1874 | () | |
1875 | (if (< (setq woman-buffer-number (1- woman-buffer-number)) 0) | |
1876 | (setq woman-buffer-number (1- (length woman-buffer-alist)))) | |
1877 | (WoMan-previous-manpage))) | |
1878 | ||
1879 | (defun WoMan-next-manpage () | |
1880 | "Find the next WoMan buffer." | |
1881 | ;; Assumes currently in a WoMan buffer! | |
1882 | (interactive) | |
1883 | (WoMan-find-buffer) ; find current existing buffer | |
1884 | (if (null (cdr woman-buffer-alist)) | |
1885 | (error "No next WoMan buffer")) | |
1886 | (if (< (setq woman-buffer-number (1- woman-buffer-number)) 0) | |
1887 | (setq woman-buffer-number (1- (length woman-buffer-alist)))) | |
1888 | (if (WoMan-find-buffer) | |
1889 | () | |
1890 | (WoMan-next-manpage))) | |
1891 | ||
1892 | (defun WoMan-find-buffer () | |
1893 | "Switch to buffer corresponding to `woman-buffer-number' and return it. | |
1894 | If such a buffer doesn't exist, remove its association from the alist in | |
1895 | `woman-buffer-alist' and return nil." | |
1896 | (if (zerop woman-buffer-number) | |
1897 | (let ((buffer (get-buffer (cdr (car woman-buffer-alist))))) | |
1898 | (if buffer | |
1899 | (switch-to-buffer buffer) | |
1900 | ;; Delete alist element: | |
1901 | (setq woman-buffer-alist (cdr woman-buffer-alist)) | |
1902 | nil)) | |
1903 | (let* ((prev-ptr (nthcdr (1- woman-buffer-number) woman-buffer-alist)) | |
1904 | (buffer (get-buffer (cdr (car (cdr prev-ptr)))))) | |
1905 | (if buffer | |
1906 | (switch-to-buffer buffer) | |
1907 | ;; Delete alist element: | |
1908 | (setcdr prev-ptr (cdr (cdr prev-ptr))) | |
1909 | (if (>= woman-buffer-number (length woman-buffer-alist)) | |
1910 | (setq woman-buffer-number 0)) | |
1911 | nil) | |
1912 | ))) | |
1913 | ||
1914 | \f | |
1915 | ;;; Syntax and display tables: | |
1916 | ||
1917 | (defconst woman-escaped-escape-char ?\1c | |
1918 | ;; An arbitrary unused control character | |
1919 | "Internal character representation of escaped escape characters.") | |
1920 | (defconst woman-escaped-escape-string | |
1921 | (char-to-string woman-escaped-escape-char) | |
1922 | "Internal string representation of escaped escape characters.") | |
1923 | ||
1924 | (defconst woman-unpadded-space-char ?\1d | |
1925 | ;; An arbitrary unused control character | |
1926 | "Internal character representation of unpadded space characters.") | |
1927 | (defconst woman-unpadded-space-string | |
1928 | (char-to-string woman-unpadded-space-char) | |
1929 | "Internal string representation of unpadded space characters.") | |
1930 | ||
1931 | (defvar woman-syntax-table nil | |
1932 | "Syntax table to support special characters used internally by WoMan.") | |
1933 | ||
1934 | (if woman-syntax-table | |
1935 | () | |
1936 | (setq woman-syntax-table (make-syntax-table)) | |
1937 | ;; The following internal chars must NOT have whitespace syntax: | |
1938 | (modify-syntax-entry woman-unpadded-space-char "." woman-syntax-table) | |
1939 | (modify-syntax-entry woman-escaped-escape-char "." woman-syntax-table) | |
1940 | ) | |
1941 | ||
1942 | (defun woman-set-buffer-display-table () | |
1943 | "Set up a display table for a WoMan buffer. | |
1944 | This display table is used for displaying internal special characters, but | |
1945 | does not interfere with any existing display table, e.g. for displaying | |
1946 | European characters." | |
1947 | (setq buffer-display-table | |
1948 | ;; The following test appears to be necessary on some | |
1949 | ;; non-Windows platforms, e.g. Solaris 2.6 when running on a | |
1950 | ;; tty. Thanks to T. V. Raman <raman@Adobe.COM>. | |
1951 | ;; The MS-DOS terminal also sets standard-display-table to | |
1952 | ;; a non-nil value. | |
1953 | (if standard-display-table ; default is nil !!! | |
1954 | (copy-sequence standard-display-table) | |
1955 | (make-display-table))) | |
1956 | ;; Display the following internal chars correctly: | |
1957 | (aset buffer-display-table woman-unpadded-space-char [?\ ]) | |
1958 | (aset buffer-display-table woman-escaped-escape-char [?\\])) | |
1959 | ||
1960 | \f | |
1961 | ;;; The main decoding driver: | |
1962 | ||
1963 | (defvar font-lock-mode) ; for the compiler | |
1964 | ||
1965 | (defun woman-decode-buffer () | |
1966 | "Decode a buffer in UN*X man-page source format. | |
1967 | No external programs are used." | |
1968 | (interactive) ; mainly for testing | |
1969 | (WoMan-log-begin) | |
1970 | (run-hooks 'woman-pre-format-hook) | |
1971 | (and (boundp 'font-lock-mode) font-lock-mode (font-lock-mode -1)) | |
1972 | ;; (fundamental-mode) | |
1973 | (let ((start-time (current-time)) ; (HIGH LOW MICROSEC) | |
1974 | time) ; HIGH * 2**16 + LOW seconds | |
1975 | (message "WoMan formatting buffer...") | |
1976 | ; (goto-char (point-min)) | |
1977 | ; (cond | |
1978 | ; ((re-search-forward "^\\.[ \t]*TH" nil t) ; wrong format if not found? | |
1979 | ; (beginning-of-line) | |
1980 | ; (delete-region (point-min) (point))) ; potentially dangerous! | |
1981 | ; (t (message "WARNING: .TH request not found -- not man-page format?"))) | |
1982 | (woman-decode-region (point-min) (point-max)) | |
1983 | (setq time (current-time) | |
1984 | time (+ (* (- (car time) (car start-time)) 65536) | |
1985 | (- (cadr time) (cadr start-time)))) | |
1986 | (message "WoMan formatting buffer...done in %d seconds" time) | |
1987 | (WoMan-log-end time)) | |
1988 | (run-hooks 'woman-post-format-hook)) | |
1989 | ||
1990 | (defvar woman-string-alist ; rebound in woman-decode-region | |
1991 | '(("S" . "") ("R" . "(Reg.)") ("Tm" . "(TM)") | |
1992 | ("lq" . "\"") ("rq" . "\"") | |
1993 | ("''" . "\"") ; needed for gcc.1 | |
1994 | (".T" . "") ; output device from -T option? | |
1995 | ) | |
1996 | "Alist of strings predefined in the -man macro package `tmac.an'.") | |
1997 | ||
1998 | (defvar woman-negative-vertical-space nil ; rebound in woman-decode-region | |
1999 | "Set to t if .sp N with N < 0 encountered.") | |
2000 | ||
2001 | (defun woman-pre-process-region (from to) | |
2002 | "Pre-process escapes and comments in the region of text between FROM and TO. | |
2003 | To be called on original buffer and any .so insertions." | |
2004 | ;; Hide escaped escapes \\ and printable escapes \e very early | |
2005 | ;; (to be re-instated as just \ very late!): | |
2006 | (goto-char from) | |
2007 | ;; .eo turns off escape character processing | |
2008 | (while (re-search-forward "\\(\\\\[\\e]\\)\\|^\\.eo" to t) ; \\ | |
2009 | (if (match-string 1) | |
2010 | (replace-match woman-escaped-escape-string t t) | |
2011 | (woman-delete-whole-line) | |
2012 | ;; .ec turns on escape character processing (and sets the | |
2013 | ;; escape character to its argument, if any, which I'm ignoring | |
2014 | ;; for now!) | |
2015 | (while (and (re-search-forward "\\(\\\\\\)\\|^\\.ec" to t) ; \ | |
2016 | (match-string 1)) | |
2017 | (replace-match woman-escaped-escape-string t t)) | |
2018 | ;; ***** Need test for .ec arg and warning here! ***** | |
2019 | (woman-delete-whole-line))) | |
2020 | ||
2021 | ;; Delete comments .\"<anything>, \"<anything>, pre-processor | |
2022 | ;; directives '\"<anything> (should give warning?) and null | |
2023 | ;; requests. (However, should null . requests cause a break?) | |
2024 | (goto-char from) | |
2025 | (while (re-search-forward "^[.'][ \t]*\\(\\\\\".*\\)?\n\\|\\\\\".*" to t) | |
2026 | (woman-delete-match 0)) | |
2027 | ) | |
2028 | ||
2029 | (defun woman-non-underline-faces () | |
2030 | "Prepare non-underlined versions of underlined faces." | |
2031 | (let ((face-list (face-list))) | |
2032 | (while face-list | |
2033 | (let* ((face (car face-list)) | |
2034 | (face-name (symbol-name face))) | |
2035 | (if (and (string-match "\\`woman-" face-name) | |
2036 | (face-underline-p face)) | |
2037 | (let ((face-no-ul (intern (concat face-name "-no-ul")))) | |
2038 | (copy-face face face-no-ul) | |
2039 | (set-face-underline-p face-no-ul nil)))) | |
2040 | (setq face-list (cdr face-list))))) | |
2041 | ||
2042 | (defun woman-decode-region (from to) | |
2043 | "Decode the region between FROM and TO in UN*X man-page source format." | |
2044 | ;; Suitable for use in format-alist. | |
2045 | ;; But this requires care to control major mode implied font locking. | |
2046 | ;; Must return the new end of file. See format.el for details. | |
2047 | ;; NB: The `to' argument is bogus: it is not currently used, and if | |
2048 | ;; it were it would need to be a marker rather than a position! | |
2049 | ;; First force the correct environment: | |
2050 | (let ((case-fold-search nil) ; This is necessary! | |
2051 | (woman-string-alist woman-string-alist) | |
2052 | (woman-fill-column woman-fill-column) | |
2053 | woman-negative-vertical-space) | |
2054 | (setq woman-left-margin woman-default-indent | |
2055 | woman-prevailing-indent woman-default-indent | |
2056 | woman-interparagraph-distance 1 | |
2057 | woman-leave-blank-lines nil | |
2058 | woman-RS-left-margin nil | |
2059 | woman-RS-prevailing-indent nil | |
2060 | woman-adjust woman-adjust-both | |
2061 | woman-justify (nth woman-adjust woman-justify-list) | |
2062 | woman-nofill nil) | |
2063 | ||
2064 | ;; Prepare non-underlined versions of underlined faces: | |
2065 | (woman-non-underline-faces) | |
2066 | ||
2067 | ;; Set syntax and display tables: | |
2068 | (set-syntax-table woman-syntax-table) | |
2069 | (woman-set-buffer-display-table) | |
2070 | ||
2071 | ;; Based loosely on a suggestion by Theodore Jump: | |
2072 | (if (or woman-fill-frame | |
2073 | (not (and (integerp woman-fill-column) (> woman-fill-column 0)))) | |
2074 | (setq woman-fill-column (- (frame-width) woman-default-indent))) | |
2075 | ||
2076 | (woman-pre-process-region from nil) | |
2077 | ;; Process ignore requests, macro definitions, | |
2078 | ;; conditionals and switch source requests: | |
2079 | (woman0-roff-buffer from) | |
2080 | ||
2081 | ;; Process \k escapes BEFORE changing tab width (?): | |
2082 | (goto-char from) | |
2083 | (woman-mark-horizonal-position) | |
2084 | ||
2085 | ;; Set buffer-local variables: | |
2086 | (setq fill-column woman-fill-column | |
2087 | tab-width woman-tab-width) | |
2088 | ||
2089 | ;; Hide unpaddable and digit-width spaces \(space) and \0: | |
2090 | (goto-char from) | |
2091 | (while (re-search-forward "\\\\[ 0]" nil t) | |
2092 | (replace-match woman-unpadded-space-string t t)) | |
2093 | ||
2094 | ;; Discard optional hyphen \%; concealed newlines \<newline>; | |
2095 | ;; point-size change function \sN,\s+N, \s-N: | |
2096 | (goto-char from) | |
2097 | (while (re-search-forward "\\\\\\([%\n]\\|s[-+]?[0-9]+\\)" nil t) | |
2098 | (woman-delete-match 0)) | |
2099 | ||
2100 | ;; BEWARE: THIS SHOULD PROBABLY ALL BE DONE MUCH LATER!!!!! | |
2101 | ;; Process trivial escapes \-, \`, \. | |
2102 | ;; (\' must be done after tab processing!): | |
2103 | (goto-char from) | |
2104 | (while (re-search-forward "\\\\\\([-`.]\\)" nil t) | |
2105 | (replace-match "\\1")) | |
2106 | ;; NB: Must keep ALL zero-width characters \&, \|, and \^ until | |
2107 | ;; ALL requests processed! | |
2108 | ||
2109 | ;; Process no-break requests and macros (including font-change macros): | |
2110 | (goto-char from) | |
2111 | (woman1-roff-buffer) | |
2112 | ||
2113 | ;; Process strings and special character escapes \(xx: | |
2114 | ;; (Must do this BEFORE fontifying!) | |
2115 | (goto-char from) | |
2116 | (woman-strings) | |
2117 | ;; Special chars moved after translation in | |
2118 | ;; `woman2-process-escapes' (for pic.1): | |
2119 | ; (goto-char from) | |
2120 | ; (woman-special-characters) | |
2121 | ||
2122 | ;; Process standard font-change requests and escapes: | |
2123 | (goto-char from) | |
2124 | (woman-change-fonts) | |
2125 | ||
2126 | ;; 1/2 em vertical motion \d, \u and general local vertical motion | |
2127 | ;; \v'+/-N' simulated using TeX ^ and _ symbols for now. | |
2128 | (goto-char from) | |
2129 | (let ((first t)) ; assume no nesting! | |
2130 | (while (re-search-forward "\\\\\\([du]\\|v'[^']*'\\)" nil t) | |
2131 | (let* ((esc (match-string 1)) | |
2132 | (repl (if (or (= (aref esc 0) ?u) | |
2133 | (and (>= (length esc) 2) (= (aref esc 2) ?-))) | |
2134 | "^" "_"))) | |
2135 | (cond (first | |
2136 | (replace-match repl nil t) | |
2137 | (put-text-property (1- (point)) (point) | |
2138 | 'face 'woman-addition-face) | |
2139 | (WoMan-warn | |
2140 | "Initial vertical motion escape \\%s simulated" esc) | |
2141 | (WoMan-log | |
2142 | " by TeX `%s' in woman-addition-face!" repl)) | |
2143 | (t | |
2144 | (woman-delete-match 0) | |
2145 | (WoMan-warn | |
2146 | "Terminal vertical motion escape \\%s ignored!" esc))) | |
2147 | (setq first (not first)) | |
2148 | ))) | |
2149 | ||
2150 | ; ;; \h'+/-N' local horizontal motion. | |
2151 | ; ;; N may include width escape \w'...' | |
2152 | ; ;; Implement arbitrary forward motion and non-overlapping backward | |
2153 | ; ;; motion. | |
2154 | ; (goto-char from) | |
2155 | ; (while (re-search-forward | |
2156 | ; ;; Delimiter can be a special char escape sequence \(.. or | |
2157 | ; ;; a single normal char (usually '): | |
2158 | ; "\\\\h\\(\\\\(..\\|.\\)\\(|\\)?" | |
2159 | ; nil t) | |
2160 | ; (let ((from (match-beginning 0)) | |
2161 | ; (delim (regexp-quote (match-string 1))) | |
2162 | ; (absolute (match-string 2)) ; absolute position? | |
2163 | ; (N (woman-parse-numeric-arg)) ; distance | |
2164 | ; to | |
2165 | ; msg) ; for warning | |
2166 | ; (if (not (looking-at delim)) | |
2167 | ; ;; Warn but leave escape in buffer unprocessed: | |
2168 | ; (WoMan-warn | |
2169 | ; "Local horizontal motion (%s) delimiter error!" | |
2170 | ; (buffer-substring from (1+ (point)))) ; point at end of arg | |
2171 | ; (setq to (match-end 0) | |
2172 | ; ;; For possible warning -- save before deleting: | |
2173 | ; msg (buffer-substring from to)) | |
2174 | ; (delete-region from to) | |
2175 | ; (if absolute ; make relative | |
2176 | ; (setq N (- N (current-column)))) | |
2177 | ; (if (>= N 0) | |
2178 | ; ;; Move forward by inserting hard spaces: | |
2179 | ; (insert-char woman-unpadded-space-char N) | |
2180 | ; ;; Move backwards by deleting space, | |
2181 | ; ;; first backwards then forwards: | |
2182 | ; (while (and | |
2183 | ; (<= (setq N (1+ N)) 0) | |
2184 | ; (cond ((memq (preceding-char) '(?\ ?\t)) | |
2185 | ; (delete-backward-char 1) t) | |
2186 | ; ((memq (following-char) '(?\ ?\t)) | |
2187 | ; (delete-char 1) t) | |
2188 | ; (t nil)))) | |
2189 | ; (if (<= N 0) | |
2190 | ; (WoMan-warn | |
2191 | ; "Negative horizontal motion (%s) would overwrite!" msg)))) | |
2192 | ; )) | |
2193 | ||
2194 | ;; Process formatting macros | |
2195 | (goto-char from) | |
2196 | (woman2-roff-buffer) | |
2197 | ||
2198 | ;; Go back and process negative vertical space if necessary: | |
2199 | (if woman-negative-vertical-space | |
2200 | (woman-negative-vertical-space from)) | |
2201 | ||
2202 | (if woman-preserve-ascii | |
2203 | ;; Re-instate escaped escapes to just `\' and unpaddable | |
2204 | ;; spaces to just `space', without inheriting any text | |
2205 | ;; properties. This is not necessary, UNLESS the buffer is to | |
2206 | ;; be saved as ASCII. | |
2207 | (progn | |
2208 | (goto-char from) | |
2209 | (while (search-forward woman-escaped-escape-string nil t) | |
2210 | (delete-char -1) (insert ?\\)) | |
2211 | (goto-char from) | |
2212 | (while (search-forward woman-unpadded-space-string nil t) | |
2213 | (delete-char -1) (insert ?\ )) | |
2214 | )) | |
2215 | ||
2216 | ;; Must return the new end of file if used in format-alist. | |
2217 | (point-max))) | |
2218 | ||
2219 | (defun woman-horizontal-escapes (to) | |
2220 | "\\h'+/-N' local horizontal motion, preserving `point'. | |
2221 | Argument TO is the target of the motion. | |
2222 | Implement arbitrary forward and non-overlapping backward motion." | |
2223 | ;; Moved from `woman-decode-region' for version 0.50. | |
2224 | ;; N may include width escape \w'...' (but may already be processed! | |
2225 | (let ((from (point))) | |
2226 | (while (re-search-forward | |
2227 | ;; Delimiter can be a special char escape sequence \(.. or | |
2228 | ;; a single normal char (usually '): | |
2229 | "\\\\h\\(\\\\(..\\|.\\)\\(|\\)?" | |
2230 | to t) | |
2231 | (let ((from (match-beginning 0)) | |
2232 | (delim (regexp-quote (match-string 1))) | |
2233 | (absolute (match-string 2)) ; absolute position? | |
2234 | (N (woman-parse-numeric-arg)) ; distance | |
2235 | to | |
2236 | msg) ; for warning | |
2237 | (if (not (looking-at delim)) | |
2238 | ;; Warn but leave escape in buffer unprocessed: | |
2239 | (WoMan-warn | |
2240 | "Local horizontal motion (%s) delimiter error!" | |
2241 | (buffer-substring from (1+ (point)))) ; point at end of arg | |
2242 | (setq to (match-end 0) | |
2243 | ;; For possible warning -- save before deleting: | |
2244 | msg (buffer-substring from to)) | |
2245 | (delete-region from to) | |
2246 | (if absolute ; make relative | |
2247 | (setq N (- N (current-column)))) | |
2248 | (if (>= N 0) | |
2249 | ;; Move forward by inserting hard spaces: | |
2250 | (insert-char woman-unpadded-space-char N) | |
2251 | ;; Move backwards by deleting space, | |
2252 | ;; first backwards then forwards: | |
2253 | (while (and | |
2254 | (<= (setq N (1+ N)) 0) | |
2255 | (cond ((memq (preceding-char) '(?\ ?\t)) | |
2256 | (delete-backward-char 1) t) | |
2257 | ((memq (following-char) '(?\ ?\t)) | |
2258 | (delete-char 1) t) | |
2259 | (t nil)))) | |
2260 | (if (<= N 0) | |
2261 | (WoMan-warn | |
2262 | "Negative horizontal motion (%s) would overwrite!" msg)))) | |
2263 | )) | |
2264 | (goto-char from))) | |
2265 | ||
2266 | ||
2267 | \f | |
2268 | ;;; Process ignore requests (.ig), conditionals (.if etc.), | |
2269 | ;;; source-switch (.so), macro definitions (.de etc.) and macro | |
2270 | ;;; expansions. | |
2271 | ||
2272 | (defvar woman0-if-to) ; marker bound in woman0-roff-buffer | |
2273 | (defvar woman0-macro-alist) ; bound in woman0-roff-buffer | |
2274 | (defvar woman0-search-regex) ; bound in woman0-roff-buffer | |
2275 | (defvar woman0-search-regex-start ; bound in woman0-roff-buffer | |
2276 | "^[.'][ \t]*\\(ig\\|if\\|ie\\|el\\|so\\|rn\\|de\\|am") | |
2277 | (defconst woman0-search-regex-end "\\)\\([ \t]+\\|$\\)") | |
2278 | ;; May need other terminal characters, e.g. \, but NOT \n! | |
2279 | ;; Alternatively, force maximal match (Posix?) | |
2280 | ||
2281 | (defvar woman0-rename-alist) ; bound in woman0-roff-buffer | |
2282 | ||
2283 | (defun woman0-roff-buffer (from) | |
2284 | "Process conditional-type requests and user-defined macros, starting at FROM. | |
2285 | Re-scan new text as appropriate." | |
2286 | (goto-char from) | |
2287 | (let ((woman0-if-to (make-marker)) | |
2288 | request woman0-macro-alist | |
2289 | (woman0-search-regex-start woman0-search-regex-start) | |
2290 | (woman0-search-regex | |
2291 | (concat woman0-search-regex-start woman0-search-regex-end)) | |
2292 | woman0-rename-alist) | |
2293 | (while (re-search-forward woman0-search-regex nil t) | |
2294 | (setq request (match-string 1)) | |
2295 | (cond ((string= request "ig") (woman0-ig)) | |
2296 | ((string= request "if") (woman0-if "if")) | |
2297 | ((string= request "ie") (woman0-if "ie")) | |
2298 | ((string= request "el") (woman0-el)) | |
2299 | ((string= request "so") (woman0-so)) | |
2300 | ((string= request "rn") (woman0-rn)) | |
2301 | ((string= request "de") (woman0-de)) | |
2302 | ((string= request "am") (woman0-de 'append)) | |
2303 | (t (woman0-macro request)))) | |
2304 | (set-marker woman0-if-to nil) | |
2305 | (woman0-rename) | |
2306 | ;; Should now re-run `woman0-roff-buffer' if any renaming was | |
2307 | ;; done, but let's just hope this is not necessary for now! | |
2308 | )) | |
2309 | ||
2310 | (defun woman0-ig () | |
2311 | ".ig yy -- Discard input up to `.yy', which defaults to `..')." | |
2312 | ;; The terminal request MUST begin with . (not ')! | |
2313 | (looking-at "\\(\\S +\\)?") | |
2314 | (beginning-of-line) | |
2315 | (let ((yy (or (match-string 1) ".")) | |
2316 | (from (point))) | |
2317 | (if (re-search-forward | |
2318 | (concat "^\\.[ \t]*" (regexp-quote yy) ".*\n") nil t) | |
2319 | (delete-region from (point)) | |
2320 | (WoMan-warn | |
2321 | "ig request ignored -- terminator `.%s' not found!" yy) | |
2322 | (woman-delete-line 1)) | |
2323 | )) | |
2324 | ||
2325 | (defsubst woman0-process-escapes (from to) | |
2326 | "Process escapes within an if/ie condition between FROM and TO." | |
2327 | (woman-strings to) | |
2328 | (goto-char from) ; necessary! | |
2329 | ;; Strip font-change escapes: | |
2330 | (while (re-search-forward "\\\\f\\((..\\|.\\)" to t) | |
2331 | (woman-delete-match 0)) | |
2332 | (goto-char from) ; necessary! | |
2333 | (woman2-process-escapes to 'numeric)) | |
2334 | ||
2335 | (defun woman0-if (request) | |
2336 | ".if/ie c anything -- Discard unless c evaluates to true. | |
2337 | Remember condition for use by a subsequent `.el'. | |
2338 | REQUEST is the invoking directive without the leading dot." | |
2339 | ;; c evaluates to a one-character built-in condition name or | |
2340 | ;; 'string1'string2' or a number > 0, prefix ! negates. | |
2341 | ;; \{ ... \} for multi-line use. | |
2342 | ;; Leaves point at start of new text. | |
2343 | (woman-delete-match 0) | |
2344 | ;; (delete-horizontal-space) | |
2345 | ;; Process escapes in condition: | |
2346 | (let ((from (point)) negated n (c 0)) | |
2347 | (set-marker woman0-if-to | |
2348 | (save-excursion (skip-syntax-forward "^ ") (point))) | |
2349 | ;; Process condition: | |
2350 | (if (setq negated (= (following-char) ?!)) (delete-char 1)) | |
2351 | (cond | |
2352 | ((looking-at "[no]") (setq c t)) ; accept n(roff) and o(dd page) | |
2353 | ((looking-at "[te]") (setq c nil)) ; reject t(roff) and e(ven page) | |
2354 | ;; Unrecognised letter so reject: | |
2355 | ((looking-at "[A-Za-z]") (setq c nil) | |
2356 | (WoMan-warn "%s %s -- unrecognised condition name rejected!" | |
2357 | request (match-string 0))) | |
2358 | ;; Accept strings if identical: | |
2359 | ((save-restriction | |
2360 | (narrow-to-region from woman0-if-to) | |
2361 | ;; String delimiter can be any non-numeric character, | |
2362 | ;; including a special character escape: | |
2363 | (looking-at "\\(\\\\(..\\|[^0-9]\\)\\(.*\\)\\1\\(.*\\)\\1\\'")) | |
2364 | (let ((end1 (copy-marker (match-end 2)))) ; end of first string | |
2365 | ;; Delete 2nd and 3rd delimiters to avoid processing them: | |
2366 | (delete-region (match-end 3) woman0-if-to) | |
2367 | (delete-region (match-end 2) (match-beginning 3)) | |
2368 | (goto-char (match-end 1)) | |
2369 | (woman0-process-escapes (point) woman0-if-to) | |
2370 | (setq c (string= (buffer-substring (point) end1) | |
2371 | (buffer-substring end1 woman0-if-to))) | |
2372 | (set-marker end1 nil) | |
2373 | (goto-char from))) | |
2374 | ;; Accept numeric value if > 0: | |
2375 | ((numberp (setq n (progn | |
2376 | (woman0-process-escapes from woman0-if-to) | |
2377 | (woman-parse-numeric-arg)))) | |
2378 | (setq c (> n 0)) | |
2379 | (goto-char from)) | |
2380 | ) | |
2381 | (if (eq c 0) | |
2382 | (woman-if-ignore woman0-if-to request) ; ERROR! | |
2383 | (woman-if-body request woman0-if-to (eq c negated))) | |
2384 | )) | |
2385 | ||
2386 | (defun woman-if-body (request to delete) ; should be reversed as `accept'? | |
2387 | "Process if-body, including \\{ ... \\}, deleting it if TO is non-nil. | |
2388 | REQUEST is the invoking directive. | |
2389 | If DELETE is non-nil, delete from point." | |
2390 | ;; Assume concealed newlines already processed. | |
2391 | (let ((from (point))) | |
2392 | (if to (delete-region (point) to)) | |
2393 | (delete-horizontal-space) | |
2394 | (cond (;;(looking-at "[^{\n]*\\\\{\\s *") ; multi-line | |
2395 | ;; allow escaped newlines: | |
2396 | (looking-at "[^{\n]*\\(\\\\\n\\)*\\\\{\\s *\\(\\\\\n\\)*") ; multi-line | |
2397 | ;; including preceding .if(s) and following newline | |
2398 | (let ((from (point))) | |
2399 | (woman-delete-match 0) | |
2400 | ;; Allow for nested \{ ... \} -- BUT BEWARE that this | |
2401 | ;; algorithm only supports one level of nesting! | |
2402 | (while | |
2403 | (and (re-search-forward | |
2404 | ;; "\\(\\\\{\\)\\|\\(\n[.']\\)?[ \t]*\\\\}[ \t]*" | |
2405 | ;; Interpret bogus `el \}' as `el \{', | |
2406 | ;; especially for Tcl/Tk man pages: | |
2407 | "\\(\\\\{\\|el[ \t]*\\\\}\\)\\|\\(\n[.']\\)?[ \t]*\\\\}[ \t]*") | |
2408 | (match-string 1)) | |
2409 | (re-search-forward "\\\\}")) | |
2410 | (delete-region (if delete from (match-beginning 0)) (point)) | |
2411 | (if (looking-at "^$") (delete-char 1)) | |
2412 | )) | |
2413 | (delete (woman-delete-line 1)) ; single-line | |
2414 | ) | |
2415 | ;; Process matching .el anything: | |
2416 | (cond ((string= request "ie") | |
2417 | ;; Discard unless previous .ie c `evaluated to false'. | |
2418 | (cond ((re-search-forward "^[.'][ \t]*el[ \t]*" nil t) | |
2419 | (woman-delete-match 0) | |
2420 | (woman-if-body "el" nil (not delete))))) | |
2421 | ;; Got here after processing a single-line `.ie' as a body | |
2422 | ;; clause to be discarded: | |
2423 | ((string= request "el") | |
2424 | (cond ((re-search-forward "^[.'][ \t]*el[ \t]*" nil t) | |
2425 | (woman-delete-match 0) | |
2426 | (woman-if-body "el" nil t)))) | |
2427 | ) | |
2428 | (goto-char from) | |
2429 | )) | |
2430 | ||
2431 | (defun woman0-el () | |
2432 | "Isolated .el request -- should not happen!" | |
2433 | (WoMan-warn "el request without matching `ie' rejected!") | |
2434 | (cond (woman-ignore | |
2435 | (woman-delete-match 0) | |
2436 | (delete-horizontal-space) | |
2437 | (woman-if-body "el" nil t)) | |
2438 | (t ; Ignore -- leave in buffer | |
2439 | ;; This does not work too well, but it's only for debugging! | |
2440 | (skip-chars-forward "^ \t") | |
2441 | (if (looking-at "[ \t]*\\{") (search-forward "\\}")) | |
2442 | (forward-line 1)))) | |
2443 | ||
2444 | (defun woman-if-ignore (to request) | |
2445 | "Ignore an if request REQUEST at TO and warn about that." | |
2446 | (WoMan-warn-ignored request "ignored -- condition not handled!") | |
2447 | (if woman-ignore | |
2448 | (woman-if-body request to t) | |
2449 | ;; Ignore -- leave in buffer | |
2450 | ;; This does not work too well, but it's only for debugging! | |
2451 | (skip-chars-forward "^ \t") | |
2452 | (if (looking-at "[ \t]*\\{") (search-forward "\\}")) | |
2453 | (forward-line 1))) | |
2454 | ||
2455 | (defun woman0-so () | |
2456 | ".so filename -- Switch source file. `.so' requests may be nested." | |
2457 | ;; Leaves point at start of new text. | |
2458 | ;; (skip-chars-forward " \t") | |
2459 | (let* ((beg (point)) | |
2460 | (end (progn (woman-forward-arg 'unquote) (point))) | |
2461 | (name (buffer-substring beg end)) | |
2462 | (filename name)) | |
2463 | ;; If the specified file does not exist in this ... | |
2464 | (or (file-exists-p filename) | |
2465 | ;; or the parent directory ... | |
2466 | (file-exists-p | |
2467 | (setq filename (concat "../" name))) | |
2468 | ;; then use the WoMan search mechanism to find the filename ... | |
2469 | (setq filename | |
2470 | (woman-file-name | |
2471 | (file-name-sans-extension | |
2472 | (file-name-nondirectory name)))) | |
2473 | ;; Cannot find the file, so ... | |
2474 | (kill-buffer (current-buffer)) | |
2475 | (error "File `%s' not found" name)) | |
2476 | (beginning-of-line) | |
2477 | (woman-delete-line 1) | |
2478 | (let ((from (point)) | |
2479 | (to (make-marker)) | |
2480 | (length (woman-insert-file-contents filename 0))) | |
2481 | (set-marker to (+ from length)) | |
2482 | (woman-pre-process-region from to) | |
2483 | (set-marker to nil) | |
2484 | (goto-char from) | |
2485 | ))) | |
2486 | ||
2487 | \f | |
2488 | ;;; Process macro definitions: | |
2489 | ||
2490 | (defun woman0-rn () | |
2491 | "Process .rn xx yy -- rename macro xx to yy." | |
2492 | ;; For now, done backwards AFTER all macro expansion. | |
2493 | ;; Should also allow requests and strings to be renamed! | |
2494 | (if (eolp) ; ignore if no argument | |
2495 | () | |
2496 | (let* ((beg (point)) | |
2497 | (end (progn (woman-forward-arg 'unquote 'concat) (point))) | |
2498 | (old (buffer-substring beg end)) | |
2499 | new) | |
2500 | (if (eolp) ; ignore if no argument | |
2501 | () | |
2502 | (setq beg (point) | |
2503 | end (progn (woman-forward-arg 'unquote) (point)) | |
2504 | new (buffer-substring beg end) | |
2505 | woman0-rename-alist (cons (cons new old) woman0-rename-alist))) | |
2506 | )) | |
2507 | (woman-delete-whole-line)) | |
2508 | ||
2509 | (defun woman0-rename () | |
2510 | "Effect renaming required by .rn requests." | |
2511 | ;; For now, do this backwards AFTER all macro expansion. | |
2512 | (while woman0-rename-alist | |
2513 | (let* ((new (car woman0-rename-alist)) | |
2514 | (old (cdr new)) | |
2515 | (new (car new))) | |
2516 | (setq woman0-rename-alist (cdr woman0-rename-alist)) | |
2517 | (goto-char (point-min)) | |
2518 | (setq new (concat "^[.'][ \t]*" (regexp-quote new))) | |
2519 | (setq old (concat "." old)) | |
2520 | (while (re-search-forward new nil t) | |
2521 | (replace-match old nil t))))) | |
2522 | ||
2523 | (defconst woman-unescape-regex | |
2524 | (concat woman-escaped-escape-string | |
2525 | "\\(" woman-escaped-escape-string "\\)?")) | |
2526 | ||
2527 | (defsubst woman-unescape (macro) | |
2528 | "Replace escaped sequences in body of MACRO. | |
2529 | Replaces || by |, but | by \, where | denotes the internal escape." | |
2530 | (let (start) | |
2531 | (while (setq start (string-match woman-unescape-regex macro start)) | |
2532 | (setq macro | |
2533 | (if (match-string 1 macro) | |
2534 | (replace-match "" t t macro 1) | |
2535 | (replace-match "\\" t t macro)) | |
2536 | start (1+ start))) | |
2537 | macro)) | |
2538 | ||
2539 | (defun woman0-de (&optional append) | |
2540 | "Process .de/am xx yy -- (re)define/append macro xx; end at `..'. | |
2541 | \(Should be up to call of yy, which defaults to `.') | |
2542 | Optional argument APPEND, if non-nil, means append macro." | |
2543 | ;; Modelled on woman-strings. BEWARE: Processing of .am is a hack! | |
2544 | ;; Add support for .rm? | |
2545 | ;; (skip-chars-forward " \t") | |
2546 | (if (eolp) ; ignore if no argument | |
2547 | () | |
2548 | (looking-at "[^ \t\n]+") ; macro name | |
2549 | (let* ((macro (match-string 0)) from | |
2550 | (previous (assoc macro woman0-macro-alist))) | |
2551 | (if (not previous) | |
2552 | (setq woman0-search-regex-start | |
2553 | (concat woman0-search-regex-start "\\|" (regexp-quote macro)) | |
2554 | woman0-search-regex | |
2555 | (concat woman0-search-regex-start woman0-search-regex-end) | |
2556 | )) | |
2557 | ;; Macro body runs from start of next line to line | |
2558 | ;; beginning with `..'." | |
2559 | ;; The terminal request MUST begin with `.' (not ')! | |
2560 | (forward-line) | |
2561 | (setq from (point)) | |
2562 | (re-search-forward "^\\.[ \t]*\\.") | |
2563 | (beginning-of-line) | |
2564 | (let ((body (woman-unescape (buffer-substring from (point))))) | |
2565 | (if (and append previous) | |
2566 | (setq previous (cdr previous) | |
2567 | body (concat body (cdr previous)) | |
2568 | append (car previous) | |
2569 | )) | |
2570 | (setq macro (cons macro (cons append body)))) | |
2571 | ;; This should be an update, but consing a new string | |
2572 | ;; onto the front of the alist has the same effect: | |
2573 | (setq woman0-macro-alist (cons macro woman0-macro-alist)) | |
2574 | (forward-line) | |
2575 | (delete-region from (point)) | |
2576 | (backward-char) ; return to end of .de/am line | |
2577 | )) | |
2578 | (beginning-of-line) ; delete .de/am line | |
2579 | (woman-delete-line 1)) | |
2580 | ||
2581 | (defun woman0-macro (request) | |
2582 | "Process macro call like the named REQUEST." | |
2583 | ;; Leaves point at start of new text. | |
2584 | (let ((macro (assoc request woman0-macro-alist))) | |
2585 | (if macro | |
2586 | (woman-interpolate-macro (cdr macro)) | |
2587 | ;; SHOULD DELETE THE UNINTERPRETED REQUEST!!!!! | |
2588 | ;; Output this message once only per call (cf. strings)? | |
2589 | (WoMan-warn "Undefined macro %s not interpolated!" request)))) | |
2590 | ||
2591 | (defun woman-interpolate-macro (macro) | |
2592 | "Interpolate (.de) or append (.am) a expansion of MACRO into the buffer." | |
2593 | ;; Could make this more efficient by checking which arguments are | |
2594 | ;; actually used in the expansion! | |
2595 | (skip-chars-forward " \t") | |
2596 | ;; Process arguments: | |
2597 | (let ((argno 0) (append (car macro)) | |
2598 | argno-string formal-arg from actual-arg start) | |
2599 | (setq macro (cdr macro)) | |
2600 | (while (not (eolp)) | |
2601 | ;; Get next actual arg: | |
2602 | (setq argno (1+ argno)) | |
2603 | (setq argno-string (format "%d" argno)) | |
2604 | (setq formal-arg (concat "\\\\\\$" argno-string)) ; regexp | |
2605 | (setq from (point)) | |
2606 | (woman-forward-arg 'unquote 'noskip) | |
2607 | (setq actual-arg (buffer-substring from (point))) | |
2608 | (skip-chars-forward " \t") ; now skip following whitespace! | |
2609 | ;; Replace formal arg with actual arg: | |
2610 | (setq start nil) | |
2611 | (while (setq start (string-match formal-arg macro start)) | |
2612 | (setq macro (replace-match actual-arg t t macro))) | |
2613 | ) | |
2614 | ;; Delete any remaining formal arguments: | |
2615 | (setq start nil) | |
2616 | (while | |
2617 | (setq start (string-match "\\\\\\$." macro start)) | |
2618 | (setq macro (replace-match "" t t macro))) | |
2619 | ;; Replace .$ number register with actual arg: | |
2620 | ;; (Do this properly via register mechanism later!) | |
2621 | (setq start nil) | |
2622 | (while | |
2623 | (setq start (string-match "\\\\n(\\.\\$" macro start)) ; regexp | |
2624 | (setq macro (replace-match argno-string t t macro))) | |
2625 | (if append | |
2626 | (forward-char) | |
2627 | (beginning-of-line) | |
2628 | (woman-delete-line 1)) | |
2629 | (save-excursion ; leave point at start of new text | |
2630 | (insert macro)))) | |
2631 | ||
2632 | \f | |
2633 | ;;; Process strings: | |
2634 | ||
2635 | (defun woman-strings (&optional to) | |
2636 | "Process ?roff strings: defined/updated by `.ds xx string' requests. | |
2637 | Interpolate by `\*x' and `\*(xx' escapes. | |
2638 | Optional argument TO specifies where in the buffer does the request end." | |
2639 | ;; Add support for .as and .rm? | |
2640 | (while | |
2641 | ;; Find .ds requests and \* escapes: | |
2642 | (re-search-forward "\\(^[.'][ \t]*ds\\)\\|\\\\\\*" to t) | |
2643 | (cond ((match-string 1) ; .ds | |
2644 | (skip-chars-forward " \t") | |
2645 | (if (eolp) ; ignore if no argument | |
2646 | () | |
2647 | (re-search-forward "[^ \t\n]+") | |
2648 | (let ((string (match-string 0))) | |
2649 | (skip-chars-forward " \t") | |
2650 | ; (setq string | |
2651 | ; (cons string | |
2652 | ; ;; hack (?) for CGI.man! | |
2653 | ; (cond ((looking-at "\"\"") "\"") | |
2654 | ; ((looking-at ".*") (match-string 0))) | |
2655 | ; )) | |
2656 | ;; Above hack causes trouble in arguments! | |
2657 | (looking-at ".*") | |
2658 | (setq string (cons string (match-string 0))) | |
2659 | ;; This should be an update, but consing a new string | |
2660 | ;; onto the front of the alist has the same effect: | |
2661 | (setq woman-string-alist (cons string woman-string-alist)) | |
2662 | )) | |
2663 | (beginning-of-line) | |
2664 | (woman-delete-line 1)) | |
2665 | (t ; \* | |
2666 | (let ((beg (match-beginning 0))) | |
2667 | (cond ((= (following-char) ?\( ) | |
2668 | (forward-char) | |
2669 | (re-search-forward "..")) | |
2670 | (t (re-search-forward "."))) | |
2671 | (let* ((stringname (match-string 0)) | |
2672 | (string (assoc stringname woman-string-alist))) | |
2673 | (cond (string | |
2674 | (delete-region beg (point)) | |
2675 | ;; Temporary hack in case string starts with a | |
2676 | ;; control character: | |
2677 | (if (bolp) (insert-before-markers "\\&")) | |
2678 | (insert-before-markers (cdr string))) | |
2679 | (t | |
2680 | (WoMan-warn "Undefined string %s not interpolated!" | |
2681 | stringname) | |
2682 | (cond (woman-ignore | |
2683 | ;; Output above message once only per call | |
2684 | (delete-region beg (point)) | |
2685 | (setq woman-string-alist | |
2686 | (cons (cons stringname "") | |
2687 | woman-string-alist)))) | |
2688 | )) | |
2689 | )) | |
2690 | )) | |
2691 | )) | |
2692 | ||
2693 | \f | |
2694 | ;;; Process special character escapes \(xx: | |
2695 | ||
2696 | (defconst woman-special-characters | |
2697 | ;; To be built heuristically as required! | |
2698 | ;; MUST insert all characters as strings for correct conversion to | |
2699 | ;; multibyte representation! | |
2700 | '(("em" "--" "\276" . t) ; 3/4 Em dash | |
2701 | ("bu" "*" "\267" . t) ; bullet | |
2702 | ("fm" "'") ; foot mark | |
2703 | ("co" "(C)" "\251") ; copyright | |
2704 | ||
2705 | ("pl" "+" "+" . t) ; math plus | |
2706 | ("mi" "-" "-" . t) ; math minus | |
2707 | ("**" "*" "*" . t) ; math star | |
2708 | ("aa" "'" "\242" . t) ; acute accent | |
2709 | ("ul" "_") ; underrule | |
2710 | ||
2711 | ("*S" "Sigma" "S" . t) ; Sigma | |
2712 | ||
2713 | (">=" ">=" "\263" . t) ; >= | |
2714 | ("<=" "<=" "\243" . t) ; <= | |
2715 | ("->" "->" "\256" . t) ; right arrow | |
2716 | ("<-" "<-" "\254" . t) ; left arrow | |
2717 | ("mu" " x " "\264" . t) ; multiply | |
2718 | ("+-" "+/-" "\261" . t) ; plus-minus | |
2719 | ("bv" "|") ; bold vertical | |
2720 | ||
2721 | ;; groff etc. extensions: | |
2722 | ("lq" "\"") | |
2723 | ("rq" "\"") | |
2724 | ("aq" "'") | |
2725 | ("ha" "^") | |
2726 | ("ti" "~") | |
2727 | ) | |
2728 | "Alist of special character codes with ASCII and extended-font equivalents. | |
2729 | Each alist elements has the form | |
2730 | (input-string ascii-string extended-font-string . use-symbol-font) | |
2731 | where | |
2732 | * `\\(input-string' is the ?roff encoding, | |
2733 | * `ascii-string' is the (multi-character) ASCII simulation, | |
2734 | * `extended-font-string' is the single-character string representing | |
2735 | the character position in the extended 256-character font, and | |
2736 | * `use-symbol-font' is t to indicate use of the symbol font or nil, | |
2737 | i.e. omitted, to indicate use of the default font. | |
2738 | Any element may be nil. Avoid control character codes (0 to \\37, \\180 | |
2739 | to \\237) in `extended-font-string' for now, since they can be | |
2740 | displayed only with a modified display table. | |
2741 | ||
2742 | Use the Emacs command `woman-display-extended-fonts' or a character | |
2743 | map accessory to help construct this alist.") | |
2744 | ||
2745 | (defun woman-special-characters (to) | |
2746 | "Process special character escapes \(xx up to buffer position TO." | |
2747 | ;; Must be done AFTER translation, which may use special chars. | |
2748 | (while (re-search-forward "\\\\(\\(..\\)" to t) | |
2749 | (let ((replacement | |
2750 | (assoc (match-string-no-properties 1) woman-special-characters))) | |
2751 | (if (and | |
2752 | replacement | |
2753 | (cond ((and woman-use-symbols (cddr replacement)) | |
2754 | ; use extended font | |
2755 | (woman-delete-match 0) | |
2756 | (insert-before-markers (nth 2 replacement)) | |
2757 | (if (nthcdr 3 replacement) ; use woman-symbol-face | |
2758 | (put-text-property (1- (point)) (point) | |
2759 | 'face 'woman-symbol-face)) | |
2760 | t) | |
2761 | ((cadr replacement) ; Use ASCII simulation | |
2762 | (woman-delete-match 0) | |
2763 | (insert-before-markers (cadr replacement)) | |
2764 | t))) | |
2765 | () | |
2766 | (WoMan-warn "Special character \\(%s not interpolated!" | |
2767 | (match-string-no-properties 1)) | |
2768 | (if woman-ignore (woman-delete-match 0)))) | |
2769 | )) | |
2770 | ||
2771 | (defun woman-display-extended-fonts () | |
2772 | "Display glyphs of graphic charactes and their octal codes. | |
2773 | All the characters in the ranges [32..127] and [160..255] are displayed | |
2774 | together with the corresponding glyphs from the default and symbol fonts. | |
2775 | Useful for constructing the `woman-special-characters' alist." | |
2776 | (interactive) | |
2777 | (with-output-to-temp-buffer "*WoMan Extended Font Map*" | |
2778 | (save-excursion | |
2779 | (set-buffer standard-output) | |
2780 | (let ((i 32)) | |
2781 | (while (< i 256) | |
2782 | (insert (format "\\%03o " i) (string i) " " (string i)) | |
2783 | (put-text-property (1- (point)) (point) | |
2784 | 'face 'woman-symbol-face) | |
2785 | (insert " ") | |
2786 | (setq i (1+ i)) | |
2787 | (when (= i 128) (setq i 160) (insert "\n")) | |
2788 | (if (zerop (% i 8)) (insert "\n"))) | |
2789 | )) | |
2790 | (print-help-return-message))) | |
2791 | ||
2792 | \f | |
2793 | ;;; Formatting macros that do not cause a break: | |
2794 | ||
2795 | (defvar request) ; Bound locally by woman1-roff-buffer | |
2796 | (defvar unquote) ; Bound locally by woman1-roff-buffer | |
2797 | ||
2798 | (defun woman-unquote (to) | |
2799 | "Delete any double-quote characters between point and TO. | |
2800 | Leave point at TO (which should be a marker)." | |
2801 | (let (in-quote) | |
2802 | (while (search-forward "\"" to 1) | |
2803 | (if (and in-quote (looking-at "\"")) | |
2804 | ;; Repeated double-quote represents single double-quote | |
2805 | (delete-char 1) | |
2806 | (if (or in-quote (looking-at ".*\"")) ; paired | |
2807 | (delete-char -1)) | |
2808 | (setq in-quote (not in-quote)) | |
2809 | )) | |
2810 | (if in-quote | |
2811 | (WoMan-warn "Unpaired \" in .%s arguments." request)) | |
2812 | )) | |
2813 | ||
2814 | (defsubst woman-unquote-args () | |
2815 | "Delete any double-quote characters up to the end of the line." | |
2816 | (woman-unquote (save-excursion (end-of-line) (point-marker)))) | |
2817 | ||
2818 | (defun woman1-roff-buffer () | |
2819 | "Process non-breaking requests." | |
2820 | (let ((case-fold-search t) | |
2821 | request fn unquote) | |
2822 | (while | |
2823 | ;; Find next control line: | |
2824 | (re-search-forward woman-request-regexp nil t) | |
2825 | (cond | |
2826 | ;; Construct woman function to call: | |
2827 | ((setq fn (intern-soft | |
2828 | (concat "woman1-" | |
2829 | (setq request (match-string 1))))) | |
2830 | (if (get fn 'notfont) ; not a font-change request | |
2831 | (funcall fn) | |
2832 | ;; Delete request or macro name: | |
2833 | (woman-delete-match 0) | |
2834 | ;; If no args then apply to next line else unquote args | |
2835 | ;; (unquote is used by called function): | |
2836 | (setq unquote (not (eolp))) | |
2837 | (if (eolp) (delete-char 1)) | |
2838 | ; ;; Hide leading control character in unquoted argument: | |
2839 | ; (cond ((memq (following-char) '(?. ?')) | |
2840 | ; (insert "\\&") | |
2841 | ; (beginning-of-line))) | |
2842 | ;; Call the appropriate function: | |
2843 | (funcall fn) | |
2844 | ;; Hide leading control character in quoted argument (only): | |
2845 | (if (and unquote (memq (following-char) '(?. ?'))) | |
2846 | (insert "\\&")) | |
2847 | ) | |
2848 | ))))) | |
2849 | ||
2850 | ;;; Font-changing macros: | |
2851 | ||
2852 | (defun woman1-B () | |
2853 | ".B -- Set words of current line in bold font." | |
2854 | (woman1-B-or-I ".ft B\n")) | |
2855 | ||
2856 | (defun woman1-I () | |
2857 | ".I -- Set words of current line in italic font." | |
2858 | (woman1-B-or-I ".ft I\n")) | |
2859 | ||
2860 | (defun woman1-B-or-I (B-or-I) | |
2861 | ".B/I -- Set words of current line in bold/italic font. | |
2862 | B-OR-I is the invoking directive." | |
2863 | ;; Should NOT concatenate the arguments! | |
2864 | (insert B-or-I) ; because it might be a control line | |
2865 | ;; Return to bol to process .SM/.B, .B/.if etc. | |
2866 | ;; or start of first arg to hide leading control char. | |
2867 | (save-excursion | |
2868 | (if unquote | |
2869 | (woman-unquote-args) | |
2870 | (while (looking-at "^[.']") (forward-line)) | |
2871 | (end-of-line) | |
2872 | (delete-horizontal-space)) | |
2873 | (insert "\\fR"))) | |
2874 | ||
2875 | (defun woman1-SM () | |
2876 | ".SM -- Set the current line in small font, i.e. IGNORE!" | |
2877 | nil) | |
2878 | ||
2879 | (defalias 'woman1-SB 'woman1-B) | |
2880 | ;; .SB -- Set the current line in small bold font, i.e. just embolden! | |
2881 | ;; (This is what c:/usr/local/share/groff/tmac/tmac.an does. The | |
2882 | ;; Linux man.7 is wrong about this!) | |
2883 | ||
2884 | (defun woman1-BI () | |
2885 | ".BI -- Join words of current line alternating bold and italic fonts." | |
2886 | (woman1-alt-fonts (list "\\fB" "\\fI"))) | |
2887 | ||
2888 | (defun woman1-BR () | |
2889 | ".BR -- Join words of current line alternating bold and Roman fonts." | |
2890 | (woman1-alt-fonts (list "\\fB" "\\fR"))) | |
2891 | ||
2892 | (defun woman1-IB () | |
2893 | ".IB -- Join words of current line alternating italic and bold fonts." | |
2894 | (woman1-alt-fonts (list "\\fI" "\\fB"))) | |
2895 | ||
2896 | (defun woman1-IR () | |
2897 | ".IR -- Join words of current line alternating italic and Roman fonts." | |
2898 | (woman1-alt-fonts (list "\\fI" "\\fR"))) | |
2899 | ||
2900 | (defun woman1-RB () | |
2901 | ".RB -- Join words of current line alternating Roman and bold fonts." | |
2902 | (woman1-alt-fonts (list "\\fR" "\\fB"))) | |
2903 | ||
2904 | (defun woman1-RI () | |
2905 | ".RI -- Join words of current line alternating Roman and italic fonts." | |
2906 | (woman1-alt-fonts (list "\\fR" "\\fI"))) | |
2907 | ||
2908 | (defun woman1-alt-fonts (fonts) | |
2909 | "Join words using alternating fonts in FONTS, which MUST be a dynamic list." | |
2910 | (nconc fonts fonts) ; circular list! | |
2911 | (insert (car fonts)) | |
2912 | ;; Return to start of first arg to hide leading control char: | |
2913 | (save-excursion | |
2914 | (setq fonts (cdr fonts)) | |
2915 | (woman-forward-arg unquote 'concat) ; unquote is bound above | |
2916 | (while (not (eolp)) | |
2917 | (insert (car fonts)) | |
2918 | (setq fonts (cdr fonts)) | |
2919 | (woman-forward-arg unquote 'concat)) ; unquote is bound above | |
2920 | (insert "\\fR") | |
2921 | )) | |
2922 | ||
2923 | (defun woman-forward-arg (&optional unquote concat) | |
2924 | "Move forward over one ?roff argument, optionally deleting quotes. | |
2925 | If optional arg UNQUOTE is non-nil, delete any argument quotes. | |
2926 | If optional arg CONCAT is non-nil, join arguments." | |
2927 | (if (eq (following-char) ?\") | |
2928 | (progn | |
2929 | (if unquote (delete-char 1) (forward-char)) | |
2930 | (re-search-forward "\"\\|$") | |
2931 | ;; Repeated double-quote represents single double-quote | |
2932 | (while (eq (following-char) ?\") ; paired | |
2933 | (if unquote (delete-char 1) (forward-char)) | |
2934 | (re-search-forward "\"\\|$")) | |
2935 | (if (eq (preceding-char) ?\") | |
2936 | (if unquote (delete-backward-char 1)) | |
2937 | (WoMan-warn "Unpaired \" in .%s arguments." request) | |
2938 | )) | |
2939 | ;; (re-search-forward "[^\\\n] \\|$") ; inconsistent | |
2940 | (skip-syntax-forward "^ ")) | |
2941 | (cond ((null concat) (skip-chars-forward " \t")) ; don't skip eol! | |
2942 | ((eq concat 'noskip)) ; do not skip following whitespace | |
2943 | (t (woman-delete-following-space))) | |
2944 | ) | |
2945 | ||
2946 | ||
2947 | ;;; The following requests are not explicit font-change requests and | |
2948 | ;;; so are flagged `notfont' to turn off automatic request deletion | |
2949 | ;;; and further processing. | |
2950 | ||
2951 | (put 'woman1-TP 'notfont t) | |
2952 | (defun woman1-TP () | |
2953 | ".TP -- After tag line, reset font to Roman for paragraph body." | |
2954 | ;; Same for .IP, but forward only 1 line? | |
2955 | (save-excursion | |
2956 | ;; May be an `irrelevant' control line in the way, so ... | |
2957 | (forward-line) | |
2958 | (forward-line (if (looking-at "\\.\\S-+[ \t]*$") 2 1)) | |
2959 | ;; May be looking at control line, so ... | |
2960 | (insert ".ft R\n"))) | |
2961 | ||
2962 | (put 'woman1-ul 'notfont t) | |
2963 | (defun woman1-ul () | |
2964 | ".ul N -- Underline (italicize) the next N input lines, default N = 1." | |
2965 | (let ((N (if (eolp) 1 (woman-parse-numeric-arg)))) ; woman-get-numeric-arg ? | |
2966 | (woman-delete-whole-line) | |
2967 | (insert ".ft I\n") | |
2968 | (forward-line N) | |
2969 | (insert ".ft R\n") | |
2970 | )) | |
2971 | ||
2972 | ;; Other non-breaking requests: | |
2973 | ||
2974 | ;; Hyphenation | |
2975 | ;; Warnings commented out. | |
2976 | ||
2977 | (put 'woman1-nh 'notfont t) | |
2978 | (defun woman1-nh () | |
2979 | ".nh -- No hyphenation, i.e. IGNORE!" | |
2980 | ;; Must be handled here to avoid breaking! | |
2981 | ;; (WoMan-log-1 ".nh request ignored -- hyphenation not supported!") | |
2982 | (woman-delete-whole-line)) | |
2983 | ||
2984 | (put 'woman1-hy 'notfont t) | |
2985 | (defun woman1-hy () | |
2986 | ".hy N -- Set hyphenation mode to N, i.e. IGNORE!" | |
2987 | ;; (WoMan-log-1 ".hy request ignored -- hyphenation not supported!") | |
2988 | (woman-delete-whole-line)) | |
2989 | ||
2990 | (put 'woman1-hc 'notfont t) | |
2991 | (defun woman1-hc () | |
2992 | ".hc c -- Set hyphenation character to c, i.e. delete it!" | |
2993 | (let ((c (char-to-string (following-char)))) | |
2994 | ;; (WoMan-log | |
2995 | ;; "Hyphenation character %s deleted -- hyphenation not supported!" c) | |
2996 | (woman-delete-whole-line) | |
2997 | (setq c (concat "\\(" c "\\)\\|^[.'][ \t]*hc")) | |
2998 | (save-excursion | |
2999 | (while (and (re-search-forward c nil t) | |
3000 | (match-string 1)) | |
3001 | (delete-char -1))) | |
3002 | )) | |
3003 | ||
3004 | (put 'woman1-hw 'notfont t) | |
3005 | (defun woman1-hw () | |
3006 | ".hw words -- Set hyphenation exception words, i.e. IGNORE!" | |
3007 | ;; (WoMan-log-1 ".hw request ignored -- hyphenation not supported!") | |
3008 | (woman-delete-whole-line)) | |
3009 | ||
3010 | ;; Other non-breaking requests correctly ignored by nroff: | |
3011 | ||
3012 | (put 'woman1-ps 'notfont t) | |
3013 | (defalias 'woman1-ps 'woman-delete-whole-line) | |
3014 | ;; .ps -- Point size -- IGNORE! | |
3015 | ||
3016 | (put 'woman1-ss 'notfont t) | |
3017 | (defalias 'woman1-ss 'woman-delete-whole-line) | |
3018 | ;; .ss -- Space-character size -- IGNORE! | |
3019 | ||
3020 | (put 'woman1-cs 'notfont t) | |
3021 | (defalias 'woman1-cs 'woman-delete-whole-line) | |
3022 | ;; .cs -- Constant character space (width) mode -- IGNORE! | |
3023 | ||
3024 | (put 'woman1-ne 'notfont t) | |
3025 | (defalias 'woman1-ne 'woman-delete-whole-line) | |
3026 | ;; .ne -- Need vertical space -- IGNORE! | |
3027 | ||
3028 | (put 'woman1-vs 'notfont t) | |
3029 | (defalias 'woman1-vs 'woman-delete-whole-line) | |
3030 | ;; .vs -- Vertical base line spacing -- IGNORE! | |
3031 | ||
3032 | (put 'woman1-bd 'notfont t) | |
3033 | (defalias 'woman1-bd 'woman-delete-whole-line) | |
3034 | ;; .bd -- Embolden font -- IGNORE! | |
3035 | ||
3036 | ;; Non-breaking SunOS-specific macros: | |
3037 | ||
3038 | (defun woman1-TX () | |
3039 | ".TX t p -- Resolve SunOS abbrev t and join to p (usually punctuation)." | |
3040 | (insert "SunOS ") | |
3041 | (woman-forward-arg 'unquote 'concat)) | |
3042 | ||
3043 | (put 'woman1-IX 'notfont t) | |
3044 | (defalias 'woman1-IX 'woman-delete-whole-line) | |
3045 | ;; .IX -- Index macro, for Sun internal use -- IGNORE! | |
3046 | ||
3047 | \f | |
3048 | ;;; Direct font selection: | |
3049 | ||
3050 | (defconst woman-font-alist | |
3051 | '(("R" . default) | |
3052 | ("I" . woman-italic-face) | |
3053 | ("B" . woman-bold-face) | |
3054 | ("P" . previous) | |
3055 | ("1" . default) | |
3056 | ("2" . woman-italic-face) | |
3057 | ("3" . woman-bold-face) ; used in bash.1 | |
3058 | ) | |
3059 | "Alist of ?roff font indicators and woman font variables and names.") | |
3060 | ||
3061 | (defun woman-change-fonts () | |
3062 | "Process font changes." | |
3063 | ;; ***** NEEDS REVISING IF IT WORKS OK ***** | |
3064 | ;; Paragraph .LP/PP/HP/IP/TP and font .B/.BI etc. macros reset font. | |
3065 | ;; Should .SH/.SS reset font? | |
3066 | ;; Font size setting macros (?) should reset font. | |
3067 | (let ((woman-font-alist woman-font-alist) ; for local updating | |
3068 | (previous-pos (point)) | |
3069 | (previous-font 'default) | |
3070 | (current-font 'default)) | |
3071 | (while | |
3072 | ;; Find font requests, paragraph macros and font escapes: | |
3073 | (re-search-forward | |
3074 | "^[.'][ \t]*\\(\\(\\ft\\)\\|\\(.P\\)\\)\\|\\(\\\\f\\)" nil 1) | |
3075 | (let (font beg notfont) | |
3076 | ;; Match font indicator and leave point at end of sequence: | |
3077 | (cond ((match-string 2) | |
3078 | ;; .ft request found | |
3079 | (setq beg (match-beginning 0)) | |
3080 | (skip-chars-forward " \t") | |
3081 | (if (eolp) ; default is previous font | |
3082 | (setq font previous-font) | |
3083 | (looking-at "[^ \t\n]+")) | |
3084 | (forward-line)) ; end of control line and \n | |
3085 | ((match-string 3) | |
3086 | ;; Macro that resets font found | |
3087 | (setq font 'default)) | |
3088 | ((match-string 4) | |
3089 | ;; \f escape found | |
3090 | (setq beg (match-beginning 0)) | |
3091 | (cond ((= (following-char) ?\( ) | |
3092 | (forward-char) | |
3093 | (re-search-forward "..")) | |
3094 | (t (re-search-forward "."))) | |
3095 | ) | |
3096 | (t (setq notfont t))) | |
3097 | (if notfont | |
3098 | () | |
3099 | ;; Get font name: | |
3100 | (or font | |
3101 | (let ((fontstring (match-string 0))) | |
3102 | (setq font (assoc fontstring woman-font-alist) | |
3103 | ;; NB: woman-font-alist contains VARIABLE NAMES. | |
3104 | font (if font | |
3105 | (cdr font) | |
3106 | (WoMan-warn "Unknown font %s." fontstring) | |
3107 | ;; Output this message once only per call ... | |
3108 | (setq woman-font-alist | |
3109 | (cons (cons fontstring 'woman-unknown-face) | |
3110 | woman-font-alist)) | |
3111 | 'woman-unknown-face) | |
3112 | ))) | |
3113 | ;; Delete font control line or escape sequence: | |
3114 | (cond (beg (delete-region beg (point)) | |
3115 | (if (eq font 'previous) (setq font previous-font)))) | |
3116 | (woman-set-face previous-pos (point) current-font) | |
3117 | (if beg | |
3118 | ;; Explicit font control | |
3119 | (setq previous-pos (point) | |
3120 | previous-font current-font) | |
3121 | ;; Macro that resets font | |
3122 | ;; (forward-line) ; DOES NOT WORK! but unnecessary? | |
3123 | ;; Must process font changes in any paragraph tag! | |
3124 | (setq previous-pos (point) | |
3125 | previous-font 'default)) | |
3126 | (setq current-font font) | |
3127 | ))) | |
3128 | ;; Set font after last request up to eob: | |
3129 | (woman-set-face previous-pos (point) current-font) | |
3130 | )) | |
3131 | ||
3132 | (defun woman-set-face (from to face) | |
3133 | "Set the face of the text from FROM to TO to face FACE. | |
3134 | Ignore the default face and underline only word characters." | |
3135 | (or (eq face 'default) ; ignore | |
3136 | (not woman-fontify) | |
3137 | (if (face-underline-p face) | |
3138 | (save-excursion | |
3139 | (let ((face-no-ul (intern (concat (symbol-name face) "-no-ul")))) | |
3140 | (goto-char from) | |
3141 | (while (< (point) to) | |
3142 | (skip-syntax-forward "w" to) | |
3143 | (put-text-property from (point) 'face face) | |
3144 | (setq from (point)) | |
3145 | (skip-syntax-forward "^w" to) | |
3146 | (put-text-property from (point) 'face face-no-ul) | |
3147 | (setq from (point)) | |
3148 | ))) | |
3149 | (put-text-property from to 'face face)) | |
3150 | )) | |
3151 | ||
3152 | \f | |
3153 | ;;; Output translation: | |
3154 | ||
3155 | (defvar translations nil) ; Also bound locally by woman2-roff-buffer | |
3156 | ;; A list of the form (\"[ace]\" (a . b) (c . d) (e . ?\ )) or nil. | |
3157 | ||
3158 | (defun woman-get-next-char () | |
3159 | "Return and delete next char in buffer, including special chars." | |
3160 | (if ;;(looking-at "\\\\(\\(..\\)") | |
3161 | ;; Match special \(xx and strings \*x, \*(xx: | |
3162 | (looking-at "\\\\\\((..\\|\\*\\((..\\|.\\)\\)") | |
3163 | (prog1 (match-string 0) | |
3164 | (woman-delete-match 0)) | |
3165 | (prog1 (char-to-string (following-char)) | |
3166 | (delete-char 1)))) | |
3167 | ||
3168 | (defun woman2-tr (to) | |
3169 | ".tr abcde -- Translate a -> b, c -> d, ..., e -> space. | |
3170 | TO is the buffer position where the directive ends. | |
3171 | \(Breaks, but should not.) Supports special chars." | |
3172 | ;; This should be an update, but consing onto the front of the alist | |
3173 | ;; has the same effect and match duplicates should not matter. | |
3174 | ;; Initialize translation data structures: | |
3175 | (let ((matches (car translations)) | |
3176 | (alist (cdr translations)) | |
3177 | a b) | |
3178 | ;; `matches' must be a string: | |
3179 | (setq matches | |
3180 | (concat (if matches (substring matches 1 -1)) "]")) | |
3181 | ;; Process .tr arguments: | |
3182 | (while (not (eolp)) ; (looking-at "[ \t]*$") ??? | |
3183 | (setq a (woman-get-next-char)) | |
3184 | (if (eolp) | |
3185 | (setq b " ") | |
3186 | (setq b (woman-get-next-char))) | |
3187 | (setq matches | |
3188 | (if (= (length a) 1) | |
3189 | (concat a matches) | |
3190 | (concat matches "\\|\\" a)) | |
3191 | alist (cons (cons a b) alist))) | |
3192 | (delete-char 1) ; no blank line | |
3193 | ;; Rebuild translations list: | |
3194 | (setq matches | |
3195 | (if (= (string-to-char matches) ?\]) | |
3196 | (substring matches 3) | |
3197 | (concat "[" matches)) | |
3198 | translations (cons matches alist)) | |
3199 | ;; Format any following text: | |
3200 | (woman2-format-paragraphs to) | |
3201 | )) | |
3202 | ||
3203 | (defsubst woman-translate (to) | |
3204 | "Translate up to marker TO. Do this last of all transformations." | |
3205 | (if translations | |
3206 | (let ((matches (car translations)) | |
3207 | (alist (cdr translations))) | |
3208 | (while (re-search-forward matches to t) | |
3209 | ;; Done like this to retain text properties and | |
3210 | ;; support translation of special characters: | |
3211 | (insert-before-markers-and-inherit | |
3212 | (cdr (assoc | |
3213 | (buffer-substring-no-properties | |
3214 | (match-beginning 0) (match-end 0)) | |
3215 | alist))) | |
3216 | (woman-delete-match 0)) | |
3217 | ))) | |
3218 | ||
3219 | \f | |
3220 | ;;; Registers: | |
3221 | ||
3222 | (defvar woman-registers ; these are all read-only | |
3223 | '((".H" 24) (".V" 48) ; resolution in basic units | |
3224 | (".g" 0) ; not groff | |
3225 | ;; (Iff emulating groff need to implement groff italic correction | |
3226 | ;; \/, e.g. for pic.1) | |
3227 | (".i" left-margin) ; current indent | |
3228 | (".j" woman-adjust) ; current adjustment | |
3229 | (".l" fill-column) ; current line length | |
3230 | (".s" 12) ; current point size | |
3231 | (".u" (if woman-nofill 0 1)) ; 1/0 in fill/nofill mode | |
3232 | (".v" 48) ; current vertical line spacing | |
3233 | ) | |
3234 | "Register alist: the key is the register name as a string. | |
3235 | Each element has the form (KEY VALUE . INC) -- inc may be nil. | |
3236 | Also bound locally in `woman2-roff-buffer'.") | |
3237 | ||
3238 | (defun woman-mark-horizonal-position () | |
3239 | "\\kx -- Store current horizontal position in INPUT LINE in register x." | |
3240 | (while (re-search-forward "\\\\k\\(.\\)" nil t) | |
3241 | (goto-char (match-beginning 0)) | |
3242 | (setq woman-registers | |
3243 | (cons (list (match-string 1) (current-column)) | |
3244 | woman-registers)) | |
3245 | (woman-delete-match 0))) | |
3246 | ||
3247 | (defsubst woman2-process-escapes-to-eol (&optional numeric) | |
3248 | "Process remaining escape sequences up to eol. | |
3249 | Handle numeric arguments specially if optional argument NUMERIC is non-nil." | |
3250 | (woman2-process-escapes | |
3251 | (save-excursion (end-of-line) (point-marker)) | |
3252 | numeric)) | |
3253 | ||
3254 | (defun woman2-nr (to) | |
3255 | ".nr R +/-N M -- Assign +/-N to register R wrt to previous value, if any. | |
3256 | The increment for auto-incrementing is set to M. | |
3257 | TO is where the directive ends. | |
3258 | \[Breaks, but should not!]" | |
3259 | (let* ((name (buffer-substring | |
3260 | (point) | |
3261 | (progn (skip-syntax-forward "^ ") (point)))) | |
3262 | (pm (progn ; increment | |
3263 | (skip-chars-forward " \t") | |
3264 | (when (memq (char-after) '(?+ ?-)) | |
3265 | (forward-char) (char-before)))) | |
3266 | (value (if (eolp) ; no value | |
3267 | nil ; to be interpreted as zero | |
3268 | (woman2-process-escapes-to-eol 'numeric) | |
3269 | (woman-parse-numeric-arg))) | |
3270 | (inc (progn ; auto-increment | |
3271 | (skip-chars-forward " \t") | |
3272 | (if (eolp) ; no value | |
3273 | nil ; to be interpreted as zero ??? | |
3274 | (woman-parse-numeric-arg)))) | |
3275 | (oldvalue (assoc name woman-registers))) | |
3276 | (when oldvalue | |
3277 | (setq oldvalue (cdr oldvalue)) ; (value . inc) | |
3278 | (unless inc (setq inc (cdr oldvalue)))) | |
3279 | (cond ((null value) | |
3280 | (setq value 0) ; correct? | |
3281 | (WoMan-warn "nr %s -- null value assigned as zero!" name)) | |
3282 | ((symbolp value) | |
3283 | (setq value (list 'quote value)))) | |
3284 | (if pm ; increment old value | |
3285 | (setq oldvalue (if oldvalue (car oldvalue) 0) | |
3286 | value (if (eq pm ?+) | |
3287 | (+ oldvalue value) | |
3288 | (- oldvalue value)))) | |
3289 | (setq woman-registers | |
3290 | (cons (cons name (cons value inc)) woman-registers)) | |
3291 | (woman-delete-whole-line) | |
3292 | (woman2-format-paragraphs to))) | |
3293 | ||
3294 | \f | |
3295 | ;;; Numeric (and "non-text") request arguments: | |
3296 | ||
3297 | (defsubst woman-get-numeric-arg () | |
3298 | "Get the value of a numeric argument at or after point, don't move point. | |
3299 | The argument can include the width function and scale indicators. | |
3300 | Assumes 10 characters per inch." | |
3301 | (woman2-process-escapes-to-eol 'numeric) | |
3302 | (save-excursion (woman-parse-numeric-arg))) | |
3303 | ||
3304 | (defun woman-parse-numeric-arg () | |
3305 | "Get the value of a numeric expression at or after point. | |
3306 | Unlike `woman-get-numeric-arg', leaves point after the argument. | |
3307 | The expression may be an argument in quotes." | |
3308 | (if (= (following-char) ?\") (forward-char)) | |
3309 | ;; Allow leading +/-: | |
3310 | (let ((value (if (looking-at "[+-]") 0 (woman-parse-numeric-value))) | |
3311 | op) | |
3312 | (while (cond | |
3313 | ((looking-at "[+-/*%]") ; arithmetic operators | |
3314 | (forward-char) | |
3315 | (setq op (intern-soft (match-string 0))) | |
3316 | (setq value (funcall op value (woman-parse-numeric-value)))) | |
3317 | ((looking-at "[<=>]=?") ; relational operators | |
3318 | (goto-char (match-end 0)) | |
3319 | (setq op (or (intern-soft (match-string 0)) | |
3320 | (intern-soft "="))) | |
3321 | (setq value (if (funcall op value (woman-parse-numeric-value)) | |
3322 | 1 0))) | |
3323 | ((memq (setq op (following-char)) '(?& ?:)) ; Boolean and / or | |
3324 | (forward-char) | |
3325 | (setq value | |
3326 | ;; and / or are special forms, not functions, in ELisp | |
3327 | (if (eq op ?&) | |
3328 | ;; and | |
3329 | (if (> value 0) | |
3330 | (if (> (woman-parse-numeric-value) 0) 1 0) | |
3331 | ;; skip second operand | |
3332 | (prog1 0 (woman-parse-numeric-value))) | |
3333 | ;; or | |
3334 | (if (> value 0) | |
3335 | ;; skip second operand | |
3336 | (prog1 1 (woman-parse-numeric-value)) | |
3337 | (if (> (woman-parse-numeric-value) 0) 1 0)) | |
3338 | ))) | |
3339 | )) | |
3340 | ; (if (looking-at "[ \t\nRC\)\"]") ; R, C are tab types | |
3341 | ; () | |
3342 | ; (WoMan-warn "Unimplemented numerical operator `%c' in %s" | |
3343 | ; (following-char) | |
3344 | ; (buffer-substring | |
3345 | ; (save-excursion (beginning-of-line) (point)) | |
3346 | ; (save-excursion (end-of-line) (point)))) | |
3347 | ; (skip-syntax-forward "^ ")) | |
3348 | value | |
3349 | )) | |
3350 | ||
3351 | (defun woman-parse-numeric-value () | |
3352 | "Get a single numeric value at or after point. | |
3353 | Leaving point after the value. It can be a number register or width | |
3354 | function (which assumes 10 characters per inch) and can include scale | |
3355 | indicators. The value may be an expression in parentheses." | |
3356 | ;; Must replace every \' by some different single character first | |
3357 | ;; before calling this function by calling | |
3358 | ;; (woman2-process-escapes-to-eol 'numeric) | |
3359 | (if (eq (following-char) ?\() | |
3360 | ;; Treat parenthesized expression as a single value. | |
3361 | (let (n) | |
3362 | (forward-char) | |
3363 | (setq n (woman-parse-numeric-arg)) | |
3364 | (skip-syntax-forward " ") | |
3365 | (if (eq (following-char) ?\)) | |
3366 | (forward-char) | |
3367 | (WoMan-warn "Parenthesis confusion in numeric expression!")) | |
3368 | n) | |
3369 | (let ((n (cond ((looking-at "[-+]?[.0-9]+") ; single number | |
3370 | ;; currently needed to set match-end, even though | |
3371 | ;; string-to-number returns 0 if number not parsed. | |
3372 | (string-to-number (match-string 0))) | |
3373 | ((looking-at "\\\\n\\([-+]\\)?\\(\(\\(..\\)\\|\\(.\\)\\)") | |
3374 | ;; interpolate number register, maybe auto-incremented | |
3375 | (let* ((pm (match-string-no-properties 1)) | |
3376 | (name (or (match-string-no-properties 3) | |
3377 | (match-string-no-properties 4))) | |
3378 | (value (assoc name woman-registers))) | |
3379 | (if value | |
3380 | (let (inc) | |
3381 | (setq value (cdr value) ; (value . inc) | |
3382 | inc (cdr value) | |
3383 | ;; eval internal (.X) registers | |
3384 | ;; stored as lisp variable names: | |
3385 | value (eval (car value))) | |
3386 | (if (and pm inc) ; auto-increment | |
3387 | (setq value | |
3388 | (funcall (intern-soft pm) value inc) | |
3389 | woman-registers | |
3390 | (cons (cons name (cons value inc)) | |
3391 | woman-registers))) | |
3392 | value) | |
3393 | (WoMan-warn "Undefined register %s defaulted to 0." | |
3394 | name) | |
3395 | 0) ; default to zero | |
3396 | )) | |
3397 | ((re-search-forward | |
3398 | ;; Delimiter can be special char escape \(.. or | |
3399 | ;; single normal char (usually '): | |
3400 | "\\=\\\\w\\(\\\\(..\\|.\\)" nil t) | |
3401 | (let ((from (match-end 0)) | |
3402 | (delim (regexp-quote (match-string 1)))) | |
3403 | (if (re-search-forward delim nil t) | |
3404 | ;; Return width of string: | |
3405 | (- (match-beginning 0) from) | |
3406 | (WoMan-warn "Width escape delimiter error!")))) | |
3407 | ))) | |
3408 | (if (null n) | |
3409 | ;; ERROR -- should handle this better! | |
3410 | (progn | |
3411 | (WoMan-warn "Numeric/register argument error: %s" | |
3412 | (buffer-substring | |
3413 | (point) | |
3414 | (save-excursion (end-of-line) (point)))) | |
3415 | (skip-syntax-forward "^ ") | |
3416 | 0) | |
3417 | (goto-char (match-end 0)) | |
3418 | ;; Check for scale factor: | |
3419 | (if | |
3420 | (cond | |
3421 | ((looking-at "\\s ") nil) ; stay put! | |
3422 | ((looking-at "[mnuv]")) ; ignore for now | |
3423 | ((looking-at "i") (setq n (* n 10))) ; inch | |
3424 | ((looking-at "c") (setq n (* n 3.9))) ; cm | |
3425 | ((looking-at "P") (setq n (* n 1.7))) ; Pica | |
3426 | ((looking-at "p") (setq n (* n 0.14))) ; point | |
3427 | ;; NB: May be immediately followed by + or -, etc., | |
3428 | ;; in which case do nothing and return nil. | |
3429 | ) | |
3430 | (goto-char (match-end 0))) | |
3431 | (if (numberp n) (round n) n)) | |
3432 | ))) | |
3433 | ||
3434 | \f | |
3435 | ;;; VERTICAL FORMATTING -- Formatting macros that cause a break: | |
3436 | ||
3437 | ; Vertical spacing philosophy: | |
3438 | ; Delete all vertical space as it is encountered. Then insert | |
3439 | ; vertical space only before text, as required. | |
3440 | ||
3441 | (defun woman2-roff-buffer () | |
3442 | "Process breaks. Format paragraphs and headings." | |
3443 | (let ((case-fold-search t) | |
3444 | (to (make-marker)) | |
3445 | (canonically-space-region | |
3446 | (symbol-function 'canonically-space-region)) | |
3447 | (insert-and-inherit (symbol-function 'insert-and-inherit)) | |
3448 | (set-text-properties (symbol-function 'set-text-properties)) | |
3449 | (woman-registers woman-registers) | |
3450 | fn request translations | |
3451 | tab-stop-list) | |
3452 | ;; ?roff does not squeeze multiple spaces, but does fill, so... | |
3453 | (fset 'canonically-space-region 'ignore) | |
3454 | ;; Try to avoid spaces inheriting underlines from preceding text! | |
3455 | (fset 'insert-and-inherit (symbol-function 'insert)) | |
3456 | (fset 'set-text-properties 'ignore) | |
3457 | (unwind-protect | |
3458 | (while | |
3459 | ;; Find next control line: | |
3460 | (re-search-forward woman-request-regexp nil t) | |
3461 | (cond | |
3462 | ;; Construct woman function to call: | |
3463 | ((setq fn (intern-soft | |
3464 | (concat "woman2-" | |
3465 | (setq request (match-string 1))))) | |
3466 | ;; Delete request or macro name: | |
3467 | (woman-delete-match 0)) | |
3468 | ;; Unrecognised request: | |
3469 | ((prog1 nil | |
3470 | ;; (WoMan-warn ".%s request ignored!" request) | |
3471 | (WoMan-warn-ignored request "ignored!") | |
3472 | ;; (setq fn 'woman2-LP) | |
3473 | ;; AVOID LEAVING A BLANK LINE! | |
3474 | ;; (setq fn 'woman2-format-paragraphs) | |
3475 | )) | |
3476 | ;; .LP assumes it is at eol and leaves a (blank) line, | |
3477 | ;; so leave point at end of line before paragraph: | |
3478 | ((or (looking-at "[ \t]*$") ; no argument | |
3479 | woman-ignore) ; ignore all | |
3480 | ;; (beginning-of-line) (kill-line) | |
3481 | ;; AVOID LEAVING A BLANK LINE! | |
3482 | (beginning-of-line) (woman-delete-line 1)) | |
3483 | (t (end-of-line) (insert ?\n)) | |
3484 | ) | |
3485 | (if (not (or fn | |
3486 | (and (not (memq (following-char) '(?. ?'))) | |
3487 | (setq fn 'woman2-format-paragraphs)))) | |
3488 | () | |
3489 | ;; Find next control line: | |
3490 | (set-marker to (woman-find-next-control-line)) | |
3491 | ;; Call the appropriate function: | |
3492 | (funcall fn to))) | |
3493 | (if (not (eobp)) ; This should not happen, but ... | |
3494 | (woman2-format-paragraphs (point-max-marker) woman-left-margin)) | |
3495 | (fset 'canonically-space-region canonically-space-region) | |
3496 | (fset 'set-text-properties set-text-properties) | |
3497 | (fset 'insert-and-inherit insert-and-inherit) | |
3498 | (set-marker to nil)))) | |
3499 | ||
3500 | (defun woman-find-next-control-line () | |
3501 | "Find and return start of next control line." | |
3502 | ; (let ((to (save-excursion | |
3503 | ; (re-search-forward "^\\." nil t)))) | |
3504 | ; (if to (1- to) (point-max))) | |
3505 | (let (to) | |
3506 | (save-excursion | |
3507 | ;; Must handle | |
3508 | ;; ...\c | |
3509 | ;; .br (and other requests?) | |
3510 | ;; by deleting both the \c and the following request. | |
3511 | ;; BEWARE THAT THIS CODE MAY BE UNRELIABLE!!!!! | |
3512 | (while | |
3513 | (and | |
3514 | (setq to (re-search-forward "\\(\\\\c\\)?\n[.']" nil t)) | |
3515 | (match-string 1) | |
3516 | (looking-at "br")) | |
3517 | (goto-char (match-beginning 0)) | |
3518 | (woman-delete-line 2))) | |
3519 | (if to (1- to) (point-max)))) | |
3520 | ||
3521 | (defun woman2-PD (to) | |
3522 | ".PD d -- Set the interparagraph distance to d. | |
3523 | Round to whole lines, default 1 line. (Breaks, but should not.) | |
3524 | TO is the buffer position where the directive ends." | |
3525 | ;; .ie \\n[.$] .nr PD (v;\\$1) | |
3526 | ;; .el .nr PD .4v>?\n[.V] | |
3527 | (woman-set-interparagraph-distance) | |
3528 | (woman2-format-paragraphs to)) | |
3529 | ||
3530 | (defun woman-set-interparagraph-distance () | |
3531 | "Set interparagraph distance from .PD directive at point." | |
3532 | (setq woman-interparagraph-distance | |
3533 | (if (eolp) 1 (woman-get-numeric-arg))) | |
3534 | ;; Should allow .PD 0 to set zero line spacing | |
3535 | (woman-delete-line 1)) ; ignore remaining args | |
3536 | ||
3537 | (defsubst woman-interparagraph-space () | |
3538 | "Set `woman-leave-blank-lines' from `woman-interparagraph-distance'." | |
3539 | ; (if (> woman-interparagraph-distance 0) | |
3540 | ; (forward-line 1) ; leave 1 blank line | |
3541 | ; (woman-delete-line 1)) ; do not leave blank line | |
3542 | (setq woman-leave-blank-lines woman-interparagraph-distance) | |
3543 | ) | |
3544 | ||
3545 | (defun woman2-TH (to) | |
3546 | ".TH n c x v m -- Begin a page as per directive ending at TO. | |
3547 | n is the name of the chapter c; x is extra commentary; v alters page | |
3548 | foot left; m alters page head center. | |
3549 | \(Should set prevailing indent (and tabs) to 5.)" | |
3550 | (woman-forward-arg 'unquote 'concat) | |
3551 | (insert ?\() | |
3552 | (woman-forward-arg 'unquote 'concat) | |
3553 | (insert ?\)) | |
3554 | (let ((start (point)) here) | |
3555 | (while (not (eolp)) | |
3556 | (cond ((looking-at "\"\"[ \t]") | |
3557 | (delete-char 2) | |
3558 | ;; (delete-horizontal-space) | |
3559 | )) | |
3560 | (delete-horizontal-space) | |
3561 | (setq here (point)) | |
3562 | (insert " -- ") | |
3563 | (woman-forward-arg 'unquote 'concat) | |
3564 | ;; Delete repeated arguments: | |
3565 | (if (string-match (buffer-substring here (point)) | |
3566 | (buffer-substring start here)) | |
3567 | (delete-region here (point))) | |
3568 | )) | |
3569 | ;; Embolden heading (point is at end of heading): | |
3570 | (woman-set-face | |
3571 | (save-excursion (beginning-of-line) (point)) (point) 'woman-bold-face) | |
3572 | (forward-line) | |
3573 | (delete-blank-lines) | |
3574 | (setq woman-left-margin woman-default-indent) | |
3575 | (setq woman-prevailing-indent woman-default-indent) | |
3576 | (woman2-format-paragraphs to woman-left-margin)) | |
3577 | ||
3578 | (defun woman2-SH (to) | |
3579 | ".SH -- Sub-head. Leave blank line and subhead at TO. | |
3580 | Format following paragraph. Set prevailing indent to 5." | |
3581 | (if (eolp) ; If no args then | |
3582 | (delete-char 1) ; apply to next line | |
3583 | (woman-unquote-args) ; else unquote to end of heading | |
3584 | (beginning-of-line)) | |
3585 | (woman2-process-escapes-to-eol) | |
3586 | (woman-leave-blank-lines woman-interparagraph-distance) | |
3587 | (setq woman-leave-blank-lines nil) | |
3588 | ;; Optionally embolden heading (point is at beginning of heading): | |
3589 | (if woman-bold-headings | |
3590 | (woman-set-face | |
3591 | (point) (save-excursion (end-of-line) (point)) 'woman-bold-face)) | |
3592 | (forward-line) | |
3593 | (setq woman-left-margin woman-default-indent | |
3594 | woman-nofill nil) ; fill output lines | |
3595 | (setq woman-prevailing-indent woman-default-indent) | |
3596 | (woman2-format-paragraphs to woman-left-margin)) | |
3597 | ||
3598 | (defun woman2-SS (to) | |
3599 | ".SS -- Sub-sub-head at TO. Like .SH but indent heading 3 spaces." | |
3600 | (if (eolp) ; If no args then | |
3601 | (delete-char 1)) ; apply to next line. | |
3602 | (insert " ") | |
3603 | (beginning-of-line) | |
3604 | (woman2-SH to)) | |
3605 | ||
3606 | (defun woman2-LP (to) | |
3607 | ".LP,.PP -- Begin paragraph at TO. Set prevailing indent to 5. | |
3608 | Leave 1 blank line and format following paragraph." | |
3609 | (woman-delete-line 1) ; ignore any arguments | |
3610 | (woman-interparagraph-space) | |
3611 | (setq woman-prevailing-indent woman-default-indent) | |
3612 | (woman2-format-paragraphs to woman-left-margin)) | |
3613 | ||
3614 | (defalias 'woman2-PP 'woman2-LP) | |
3615 | (defalias 'woman2-P 'woman2-LP) | |
3616 | ||
3617 | (defun woman2-ns (to) | |
3618 | ".ns -- Turn on no-space mode at TO and format following paragraph." | |
3619 | ;; Should not cause a break! | |
3620 | (woman-delete-line 1) ; ignore argument(s) | |
3621 | (setq woman-nospace t) | |
3622 | (woman2-format-paragraphs to)) | |
3623 | ||
3624 | (defun woman2-rs (to) | |
3625 | ".rs -- Turn off no-space mode at TO and format following paragraph." | |
3626 | ;; Should not cause a break! | |
3627 | (woman-delete-line 1) ; ignore argument(s) | |
3628 | (setq woman-nospace nil) | |
3629 | (woman2-format-paragraphs to)) | |
3630 | ||
3631 | (defun woman2-sp (to) | |
3632 | ".sp N -- If N > 0, leave 1 blank line at TO and format following paragraph." | |
3633 | (let ((N (if (eolp) 1 (woman-get-numeric-arg)))) | |
3634 | (if (>= N 0) | |
3635 | (woman-delete-line 1) ; ignore argument(s) | |
3636 | (setq woman-negative-vertical-space t) | |
3637 | (insert ".sp ") | |
3638 | (forward-line)) | |
3639 | (setq woman-leave-blank-lines N) | |
3640 | (woman2-format-paragraphs to))) | |
3641 | ||
3642 | (defun woman-negative-vertical-space (from) | |
3643 | ".sp N with N < 0 => overlap following with preceding lines at FROM." | |
3644 | ;; Run by woman-decode-region if necessary -- not usually required. | |
3645 | (WoMan-warn "Negative vertical spacing support is experimental!") | |
3646 | (goto-char from) | |
3647 | (while | |
3648 | ;; Find next control line: | |
3649 | (re-search-forward "^\\.sp " nil t) | |
3650 | (let ((N (woman-get-numeric-arg)) | |
3651 | overlap overwritten) | |
3652 | (woman-delete-whole-line) | |
3653 | (setq from (point) | |
3654 | overlap (buffer-substring from | |
3655 | (progn (forward-line (- N)) (point)))) | |
3656 | (delete-region from (point)) | |
3657 | (forward-line N) | |
3658 | (let ((imax (length overlap)) | |
3659 | (i 0) c) | |
3660 | (while (< i imax) | |
3661 | (setq c (aref overlap i)) | |
3662 | (cond ((eq c ?\n) ; skip | |
3663 | (forward-line)) | |
3664 | ((eolp) ; extend line | |
3665 | ;; Insert character INCLUDING TEXT PROPERTIES: | |
3666 | ;; (insert (substring overlap i (1+ i))) | |
3667 | (let ((eol (string-match "\n" overlap i))) | |
3668 | (insert (substring overlap i eol)) | |
3669 | (setq i (or eol imax))) | |
3670 | ) | |
3671 | ((eq c ?\ ) ; skip | |
3672 | (forward-char)) | |
3673 | ((eq c ?\t) ; skip | |
3674 | (if (eq (following-char) ?\t) | |
3675 | (forward-char) ; both tabs, just skip | |
3676 | (let ((i woman-tab-width)) | |
3677 | (while (> i 0) | |
3678 | (if (eolp) | |
3679 | (insert ?\ ) ; extend line | |
3680 | (forward-char)) ; skip | |
3681 | (setq i (1- i))) | |
3682 | ))) | |
3683 | (t | |
3684 | (if (or (eq (following-char) ?\ ) ; overwrite OK | |
3685 | overwritten) ; warning only once per ".sp -" | |
3686 | () | |
3687 | (setq overwritten t) | |
3688 | (WoMan-warn | |
3689 | "Character(s) overwritten by negative vertical spacing in line %d" | |
3690 | (count-lines 1 (point)))) | |
3691 | (delete-char 1) (insert (substring overlap i (1+ i))))) | |
3692 | (setq i (1+ i)) | |
3693 | )) | |
3694 | ))) | |
3695 | ||
3696 | \f | |
3697 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
3698 | ;; The following function should probably do ALL width and number | |
3699 | ;; register interpolation. | |
3700 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
3701 | ||
3702 | (defun woman2-process-escapes (to &optional numeric) | |
3703 | "Process remaining escape sequences up to marker TO, preserving point. | |
3704 | Optional argument NUMERIC, if non-nil, means the argument is numeric." | |
3705 | ;; The first two cases below could be merged (maybe)! | |
3706 | (let ((from (point))) | |
3707 | ;; Discard zero width filler character used to hide leading dots | |
3708 | ;; and zero width characters \|, \^: | |
3709 | (while (re-search-forward "\\\\[&|^]" to t) | |
3710 | (woman-delete-match 0)) | |
3711 | (goto-char from) | |
3712 | ;; Interrupt text processing -- CONTINUE current text with the | |
3713 | ;; next text line (after any control lines, unless processing to | |
3714 | ;; eol): | |
3715 | (while (re-search-forward "\\\\c.*\n?" to t) | |
3716 | (woman-delete-match 0)) | |
3717 | ;; but do not delete the final newline ... | |
3718 | (if (and (or (eobp) (= (point) to)) (not (bolp))) | |
3719 | (insert-before-markers ?\n)) | |
3720 | (goto-char from) | |
3721 | (woman-translate to) | |
3722 | (goto-char from) | |
3723 | (woman-special-characters to) | |
3724 | (goto-char from) | |
3725 | ;; Printable version of the current escape character, ASSUMED to be `\' | |
3726 | ;; This must be done LAST of all escape processing! | |
3727 | ;; Done like this to preserve any text properties of the `\' | |
3728 | (while (search-forward "\\" to t) | |
3729 | (let ((c (following-char))) | |
3730 | (cond ((eq c ?') ; \' -> ' | |
3731 | (delete-char -1) | |
3732 | (cond (numeric ; except in numeric args, \' -> ` | |
3733 | (delete-char 1) | |
3734 | (insert ?`)))) | |
3735 | ((eq c ?\( )) ; uninterpreted special character | |
3736 | ; \(.. -- do nothing | |
3737 | ((eq c ?t) ; non-interpreted tab \t | |
3738 | (delete-char 1) | |
3739 | (delete-char -1) | |
3740 | (insert "\t")) | |
3741 | ((and numeric | |
3742 | (memq c '(?w ?n ?h)))) ; leave \w, \n, \h (?????) | |
3743 | ((eq c ?l) (woman-horizontal-line)) | |
3744 | (t | |
3745 | ;; \? -> ? where ? is any remaining character | |
3746 | (WoMan-warn "Escape ignored: \\%c -> %c" c c) | |
3747 | (delete-char -1)) | |
3748 | ))) | |
3749 | (goto-char from) | |
3750 | ;; Process non-default tab settings: | |
3751 | (cond (tab-stop-list | |
3752 | (while (search-forward "\t" to t) | |
3753 | (woman-tab-to-tab-stop)) | |
3754 | (goto-char from))) | |
3755 | ||
3756 | ;; Must replace \' by something before processing \w, done above. | |
3757 | ||
3758 | ;; Replace all `\w' and `\n' escapes: | |
3759 | ;; (This may be a bit too recursive!) | |
3760 | (while (re-search-forward "\\\\[nw]" to t) | |
3761 | (let ((from (match-beginning 0)) N) | |
3762 | (goto-char from) | |
3763 | (setq N (woman-parse-numeric-value)) | |
3764 | (delete-region from (point)) | |
3765 | ;; Interpolate value: | |
3766 | (insert-before-markers (number-to-string N)))) | |
3767 | (goto-char from))) | |
3768 | ||
3769 | (defun woman-horizontal-line () | |
3770 | "\\l'Nc' -- Draw a horizontal line of length N using character c, default _." | |
3771 | (delete-char -1) | |
3772 | (delete-char 1) | |
3773 | (looking-at "\\(.\\)\\(.*\\)\\1") | |
3774 | (let ((to (make-marker)) from N c) | |
3775 | (set-marker to (match-end 2)) | |
3776 | (delete-char 1) | |
3777 | (setq from (point) | |
3778 | N (woman-parse-numeric-arg)) | |
3779 | (setq c (if (< (point) to) (following-char) ?_)) | |
3780 | (delete-region from to) | |
3781 | (delete-char 1) | |
3782 | (set-marker to nil) | |
3783 | (insert (make-string N c)) | |
3784 | )) | |
3785 | ||
3786 | ;;; 4. Text Filling, Adjusting, and Centering | |
3787 | ||
3788 | (defun woman2-br (to) | |
3789 | ".br -- Break. Leave no blank line at TO and format following paragraph." | |
3790 | (woman-delete-line 1) ; ignore any arguments | |
3791 | (woman2-format-paragraphs to)) | |
3792 | ||
3793 | (defun woman2-fi (to) | |
3794 | ".fi -- Fill subsequent output lines at TO. | |
3795 | Leave no blank line and format following paragraph" | |
3796 | (setq woman-nofill nil) | |
3797 | (woman-delete-line 1) ; ignore any arguments | |
3798 | ;; Preserve any final blank line in the nofill region: | |
3799 | (save-excursion | |
3800 | (forward-line -1) | |
3801 | (if (looking-at "[ \t]*$") (setq woman-leave-blank-lines 1))) | |
3802 | (woman2-format-paragraphs to)) | |
3803 | ||
3804 | (defun woman2-nf (to) | |
3805 | ".nf -- Nofill at TO. Subsequent lines are neither filled nor adjusted. | |
3806 | Input text lines are copied directly to output lines without regard for | |
3807 | the current line length." | |
3808 | (setq woman-nofill t) | |
3809 | (woman-delete-line 1) ; ignore any arguments | |
3810 | (woman2-format-paragraphs to)) | |
3811 | ||
3812 | (defun woman2-ad (to) | |
3813 | ".ad c -- Line adjustment is begun at TO (once fill mode is on). | |
3814 | Set justification mode to c if specified. (Breaks, but should not.)" | |
3815 | ;; c = l -- left, r -- right, c -- center, b or n -- both, | |
3816 | ;; absent -- unchanged. Initial mode adj,both. | |
3817 | (setq woman-adjust | |
3818 | (cond ((eolp) woman-adjust-previous) | |
3819 | ((eq (following-char) ?l) woman-adjust-left) | |
3820 | ((eq (following-char) ?r) woman-adjust-right) | |
3821 | ((eq (following-char) ?c) woman-adjust-center) | |
3822 | ((memq (following-char) '(?b ?n)) woman-adjust-both) | |
3823 | (t (woman-get-numeric-arg)) | |
3824 | ) | |
3825 | woman-justify (nth woman-adjust woman-justify-list)) | |
3826 | (woman-delete-line 1) ; ignore any remaining arguments | |
3827 | (woman2-format-paragraphs to)) | |
3828 | ||
3829 | (defun woman2-na (to) | |
3830 | ".na -- No adjusting at TO. | |
3831 | (Breaks, but should not.)" | |
3832 | (setq woman-adjust-previous woman-adjust | |
3833 | woman-justify-previous woman-justify | |
3834 | woman-adjust woman-adjust-left ; fill but do not adjust | |
3835 | woman-justify (nth woman-adjust woman-justify-list)) | |
3836 | (woman-delete-line 1) ; ignore any arguments | |
3837 | (woman2-format-paragraphs to)) | |
3838 | ||
3839 | ;;; The main formatting functions: | |
3840 | ||
3841 | (defun woman-leave-blank-lines (&optional leave) | |
3842 | "Delete all blank lines around point. | |
3843 | Leave one blank line if optional argument LEAVE is non-nil and non-zero, | |
3844 | or if LEAVE is nil and `woman-leave-blank-lines' is non-nil and non-zero." | |
3845 | ;; ***** It may suffice to delete only lines ABOVE point! ***** | |
3846 | ;; NOTE: Function arguments are evaluated left to right | |
3847 | ;; (*note (elisp)Function Forms::.). | |
3848 | (delete-region | |
3849 | (save-excursion | |
3850 | (if (not (eq (skip-syntax-backward " ") 0)) | |
3851 | (forward-line)) ; forward-char ? | |
3852 | (point)) | |
3853 | (progn (skip-syntax-forward " ") | |
3854 | (beginning-of-line) | |
3855 | (point))) | |
3856 | (if woman-nospace | |
3857 | () | |
3858 | (if (or (null leave) (eq leave 0)) | |
3859 | ;; output any `pending' vertical space ... | |
3860 | (setq leave woman-leave-blank-lines)) | |
3861 | (if (and leave (> leave 0)) (insert-before-markers ?\n)) | |
3862 | ) | |
3863 | (setq woman-leave-blank-lines nil) | |
3864 | ) | |
3865 | ||
3866 | ;; `fill-region-as-paragraph' in `fill.el' appears to be the principal | |
3867 | ;; text filling function, so that is what I use here. | |
3868 | ||
3869 | (defvar woman-temp-indent nil) | |
3870 | ||
3871 | (defun woman2-format-paragraphs (to &optional new-left) | |
3872 | "Indent paragraphs at TO to current left margin. | |
3873 | Optional argument NEW-LEFT, if non-nil, means set current left margin. | |
3874 | If `woman-nofill' is nil, also fill and adjust." | |
3875 | ;; Blank space should only ever be output before text. | |
3876 | (if new-left (setq left-margin new-left)) | |
3877 | (if (looking-at "^\\s *$") | |
3878 | ;; A blank line should leave a space like .sp 1 (p. 14). | |
3879 | (setq woman-leave-blank-lines 1)) | |
3880 | (skip-syntax-forward " ") | |
3881 | ;; Successive control lines are sufficiently common to be worth a | |
3882 | ;; special case (maybe): | |
3883 | (if (>= (point) to) ; >= as a precaution! | |
3884 | () | |
3885 | ;; (woman-leave-blank-lines) | |
3886 | (woman-reset-nospace) | |
3887 | ;; (woman2-process-escapes to) ; 7 October 1999 | |
3888 | (woman2-process-escapes to 'numeric) | |
3889 | (if woman-nofill | |
3890 | ;; Indent without filling or adjusting ... | |
3891 | (progn | |
3892 | (woman-leave-blank-lines) | |
3893 | (cond (woman-temp-indent | |
3894 | (indent-to woman-temp-indent) | |
3895 | (forward-line))) | |
3896 | (indent-rigidly (point) to left-margin) | |
3897 | (woman-horizontal-escapes to)) ; 7 October 1999 | |
3898 | ;; Fill and justify ... | |
3899 | ;; Blank lines and initial spaces cause a break. | |
3900 | ; (cond ((and (= (point) to) (not (looking-at ".nf"))) ; Yuk!!! | |
3901 | ; ;; No text after a request that caused a break, so delete | |
3902 | ; ;; any spurious blank line left: | |
3903 | ; (forward-line -1) | |
3904 | ; (if (looking-at "^\\s *$") (kill-line) (forward-line)))) | |
3905 | (while (< (point) to) | |
3906 | (woman-leave-blank-lines) | |
3907 | (let ((from (point))) | |
3908 | ;; Indent first lin of paragraph: | |
3909 | (indent-to (or woman-temp-indent left-margin)) | |
3910 | (woman-horizontal-escapes to) ; 7 October 1999 | |
3911 | ;; Find the beginning of the next paragraph: | |
3912 | (forward-line) | |
3913 | ; (if (re-search-forward "\\(^\\s *$\\)\\|\\(^\\s +\\)" to 1) | |
3914 | ; ;; A blank line should leave a space like .sp 1 (p. 14). | |
3915 | ; (if (eolp) | |
3916 | ; (progn | |
3917 | ; (skip-syntax-forward " ") | |
3918 | ; (setq woman-leave-blank-lines 1)) | |
3919 | ; (setq woman-leave-blank-lines nil))) | |
3920 | (and (re-search-forward "\\(^\\s *$\\)\\|\\(^\\s +\\)" to 1) | |
3921 | ;; A blank line should leave a space like .sp 1 (p. 14). | |
3922 | (eolp) | |
3923 | (skip-syntax-forward " ") | |
3924 | (setq woman-leave-blank-lines 1)) | |
3925 | (beginning-of-line) | |
3926 | ;; If a single short line then just leave it. | |
3927 | ;; This is necessary to preserve some table layouts. | |
3928 | ;; PROBABLY NOT NECESSARY WITH SQUEEZE MODIFICATION !!!!! | |
3929 | (if (or (> (count-lines from (point)) 1) | |
3930 | (save-excursion | |
3931 | (backward-char) | |
3932 | (> (current-column) fill-column))) | |
3933 | ;; ?roff does not squeeze multiple spaces | |
3934 | ;; (fill-region-as-paragraph from (point) woman-justify t) | |
3935 | ;; NOSQUEEZE has no effect if JUSTIFY is full, so | |
3936 | ;; redefine canonically-space-region, see above. | |
3937 | (progn | |
3938 | ;; Needs a re-write of the paragraph formatter to | |
3939 | ;; avoid this nonsense to handle temporary indents! | |
3940 | (if (and woman-temp-indent (< woman-temp-indent left-margin)) | |
3941 | (let ((left-margin woman-temp-indent)) | |
3942 | (fill-region-as-paragraph from (point) woman-justify) | |
3943 | (save-excursion | |
3944 | (goto-char from) | |
3945 | (forward-line) | |
3946 | (setq from (point))))) | |
3947 | (fill-region-as-paragraph from (point) woman-justify)) | |
3948 | ) | |
3949 | ;; A blank line should leave a space like .sp 1 (p. 14). | |
3950 | ;; Delete all but 1 trailing blank lines: | |
3951 | ;;(woman-leave-blank-lines 1) | |
3952 | )) | |
3953 | ) | |
3954 | (setq woman-temp-indent nil) | |
3955 | ;; Non-white-space text has been processed, so ... | |
3956 | ;;(setq woman-leave-blank-lines nil) | |
3957 | )) | |
3958 | ||
3959 | \f | |
3960 | ;;; Tagged, indented and hanging paragraphs: | |
3961 | ||
3962 | (defun woman2-TP (to) | |
3963 | ".TP i -- Set prevailing indent to i at TO. | |
3964 | Begin indented paragraph with hanging tag given by next text line. | |
3965 | If tag doesn't fit, place it on a separate line." | |
3966 | (let ((i (woman2-get-prevailing-indent))) | |
3967 | (woman-leave-blank-lines woman-interparagraph-distance) | |
3968 | (woman2-tagged-paragraph to i))) | |
3969 | ||
3970 | (defun woman2-IP (to) | |
3971 | ".IP x i -- Same as .TP with tag x. TO is where the directive ends." | |
3972 | (woman-interparagraph-space) | |
3973 | (if (eolp) ; no args | |
3974 | ;; Like LP without resetting prevailing indent | |
3975 | (woman2-format-paragraphs to (+ woman-left-margin | |
3976 | woman-prevailing-indent)) | |
3977 | (woman-forward-arg 'unquote) | |
3978 | (let ((i (woman2-get-prevailing-indent 'leave-eol))) | |
3979 | (beginning-of-line) | |
3980 | (woman-leave-blank-lines) ; must be here, | |
3981 | (woman2-tagged-paragraph to i)))) | |
3982 | ||
3983 | (defun woman-find-next-control-line-carefully () | |
3984 | "Find and return start of next control line, even if already there!" | |
3985 | (if (looking-at "^[.']") | |
3986 | (point) | |
3987 | (woman-find-next-control-line))) | |
3988 | ||
3989 | (defun woman2-tagged-paragraph (to i) | |
3990 | "Set prevailing indent at TO to I. | |
3991 | Begin indented paragraph with hanging tag given by current text line. | |
3992 | If tag doesn't fit, leave it on separate line." | |
3993 | (if (not (looking-at "\\s *$")) ; non-empty tag | |
3994 | (setq woman-leave-blank-lines nil)) | |
3995 | ||
3996 | ;; Temporary hack for bash.1 and groff_mmse.7 until code is revised | |
3997 | ;; to process all requests uniformly: | |
3998 | (cond ((and (= (point) to) (looking-at "^[.'][ \t]*\\(PD\\|br\\|ta\\) *")) | |
3999 | (if (string= (match-string 1) "br") | |
4000 | (woman-delete-line 1) | |
4001 | (woman-delete-match 0) | |
4002 | (if (string= (match-string 1) "ta") ; for GetInt.3 | |
4003 | (woman2-ta to) | |
4004 | (woman-set-interparagraph-distance))) | |
4005 | (set-marker to (woman-find-next-control-line-carefully)) | |
4006 | )) | |
4007 | ||
4008 | (let ((tag (point))) | |
4009 | (woman-reset-nospace) | |
4010 | ;; Format the tag: | |
4011 | (woman2-process-escapes-to-eol) | |
4012 | ;; TIDY UP THE FOLLOWING CODE | |
4013 | ;; (indent-to woman-left-margin) | |
4014 | (setq left-margin woman-left-margin) | |
4015 | (forward-line) | |
4016 | (fill-region-as-paragraph (save-excursion (forward-line -1) (point)) | |
4017 | (point) woman-justify) | |
4018 | ||
4019 | ;; Temporary hack for bash.1 until all requests processed uniformly: | |
4020 | (cond ((and (= (point) to) (looking-at "^[.'][ \t]*PD *")) | |
4021 | (woman-delete-match 0) | |
4022 | (woman-set-interparagraph-distance) | |
4023 | (set-marker to (woman-find-next-control-line-carefully)) | |
4024 | )) | |
4025 | ||
4026 | ;; Format the paragraph body, if there is one! Set indented left | |
4027 | ;; margin anyway, because the paragraph body may begin with a | |
4028 | ;; control line: | |
4029 | (setq left-margin (+ woman-left-margin i)) | |
4030 | (cond ((< (point) to) | |
4031 | (woman2-format-paragraphs to) | |
4032 | (goto-char tag) (end-of-line) | |
4033 | (cond ((> (setq i (- left-margin (current-column))) 0) | |
4034 | (delete-char 1) | |
4035 | (delete-horizontal-space) | |
4036 | ;; Necessary to avoid spaces inheriting underlines. | |
4037 | ;; Cannot simply delete (current-column) whitespace | |
4038 | ;; characters because some may be tabs! | |
4039 | (while (> i 0) (insert ? ) (setq i (1- i))))) | |
4040 | (goto-char to) ; necessary ??? | |
4041 | )) | |
4042 | )) | |
4043 | ||
4044 | (defun woman2-HP (to) | |
4045 | ".HP i -- Set prevailing indent at TO to i. | |
4046 | Begin paragraph with hanging indent." | |
4047 | (let ((i (woman2-get-prevailing-indent))) | |
4048 | (woman-interparagraph-space) | |
4049 | (setq woman-temp-indent woman-left-margin) | |
4050 | (woman2-format-paragraphs to (+ woman-left-margin i)) | |
4051 | )) | |
4052 | ||
4053 | (defun woman2-get-prevailing-indent (&optional leave-eol) | |
4054 | "Set the prevailing indent to an integer argument at point, and return it. | |
4055 | If no argument at point, return prevailing indent. | |
4056 | Delete line from point and eol unless LEAVE-EOL is non-nil." | |
4057 | (if (eolp) | |
4058 | (or leave-eol (delete-char 1)) | |
4059 | (let ((i (woman-get-numeric-arg))) | |
4060 | (woman-delete-line) (or leave-eol (delete-char 1)) | |
4061 | ;; i = 0 if the argument was not a number | |
4062 | (if (> i 0) (setq woman-prevailing-indent i)))) | |
4063 | woman-prevailing-indent) | |
4064 | ||
4065 | (defmacro woman-push (value stack) | |
4066 | "Push VALUE onto STACK." | |
4067 | `(setq ,stack (cons ,value ,stack))) | |
4068 | ||
4069 | (defmacro woman-pop (variable stack) | |
4070 | "Pop the value at the top of STACK into VARIABLE. | |
4071 | Allow for mismatched requests!" | |
4072 | `(if ,stack | |
4073 | (setq ,variable (car ,stack) | |
4074 | ,stack (cdr ,stack)))) | |
4075 | ||
4076 | (defun woman2-RS (to) | |
4077 | ".RS i -- Start relative indent at TO, move left margin in distance i. | |
4078 | Set prevailing indent to 5 for nested indents." | |
4079 | (woman-push woman-left-margin woman-RS-left-margin) | |
4080 | (woman-push woman-prevailing-indent woman-RS-prevailing-indent) | |
4081 | (setq woman-left-margin (+ woman-left-margin | |
4082 | (woman2-get-prevailing-indent)) | |
4083 | woman-prevailing-indent woman-default-indent) | |
4084 | (woman2-format-paragraphs to woman-left-margin)) | |
4085 | ||
4086 | (defun woman2-RE (to) | |
4087 | ".RE -- End of relative indent at TO. | |
4088 | Set prevailing indent to amount of starting .RS." | |
4089 | (woman-pop woman-left-margin woman-RS-left-margin) | |
4090 | (woman-pop woman-prevailing-indent woman-RS-prevailing-indent) | |
4091 | (woman-delete-line 1) ; ignore any arguments | |
4092 | (woman2-format-paragraphs to woman-left-margin)) | |
4093 | ||
4094 | \f | |
4095 | ;;; Line Length and Indenting: | |
4096 | ||
4097 | (defun woman-set-arg (arg &optional previous) | |
4098 | "Reset, increment or decrement ARG, delete the whole remaining control line. | |
4099 | Argument must be quoted. | |
4100 | Optional argument PREVIOUS, if non-nil, is evaluated to set ARG at eol." | |
4101 | (if (eolp) ; space already skipped | |
4102 | (set arg (if previous (eval previous) 0)) | |
4103 | (if previous (set previous (eval arg))) | |
4104 | (woman2-process-escapes-to-eol 'numeric) | |
4105 | (let ((pm (if (looking-at "[+-]") | |
4106 | (prog1 (following-char) | |
4107 | (forward-char 1)))) | |
4108 | (i (woman-parse-numeric-arg))) | |
4109 | (cond ((null pm) (set arg i)) | |
4110 | ((= pm ?+) (set arg (+ (eval arg) i))) | |
4111 | ((= pm ?-) (set arg (- (eval arg) i))) | |
4112 | )) | |
4113 | (beginning-of-line)) | |
4114 | (woman-delete-line 1)) ; ignore any remaining arguments | |
4115 | ||
4116 | ;; NEED TO RATIONALIZE NAMES FOR PREVIOUS VALUES! | |
4117 | (defvar woman-ll-fill-column woman-fill-column) | |
4118 | (defvar woman-in-left-margin woman-left-margin) | |
4119 | ||
4120 | (defun woman2-ll (to) | |
4121 | ".ll +/-N -- Set, increment or decrement line length at TO. | |
4122 | \(Breaks, but should not.)" | |
4123 | (woman-set-arg 'fill-column 'woman-ll-fill-column) | |
4124 | (woman2-format-paragraphs to)) | |
4125 | ||
4126 | (defun woman2-in (to) | |
4127 | ".in +/-N -- Set, increment or decrement the indent at TO." | |
4128 | (woman-set-arg 'left-margin 'woman-in-left-margin) | |
4129 | (woman2-format-paragraphs to)) | |
4130 | ||
4131 | (defun woman2-ti (to) | |
4132 | ".ti +/-N -- Temporary indent at TO." | |
4133 | ;; Ignore if no argument. | |
4134 | ;; Indent next output line only wrt current indent. | |
4135 | ;; Current indent is not changed. | |
4136 | (setq woman-temp-indent left-margin) | |
4137 | (woman-set-arg 'woman-temp-indent) | |
4138 | (woman2-format-paragraphs to nil)) | |
4139 | ||
4140 | \f | |
4141 | ;;; Tabs, Leaders, and Fields: | |
4142 | ||
4143 | (defun woman2-ta (to) | |
4144 | ".ta Nt ... -- Set tabs at TO, left type, unless t=R(right), C(centered). | |
4145 | \(Breaks, but should not.) The tab stops are separated by spaces; | |
4146 | a value preceded by + represents an increment to the previous stop value." | |
4147 | (setq tab-stop-list nil) | |
4148 | (woman2-process-escapes-to-eol 'numeric) | |
4149 | (save-excursion | |
4150 | (let ((tab-stop 0)) | |
4151 | (while (not (eolp)) | |
4152 | (let ((plus (cond ((eq (following-char) ?+) (forward-char 1) t))) | |
4153 | (i (woman-parse-numeric-arg))) | |
4154 | (setq tab-stop (if plus (+ tab-stop i) i))) | |
4155 | (if (memq (following-char) '(?R ?C)) | |
4156 | (setq tab-stop (cons tab-stop (following-char)))) | |
4157 | (setq tab-stop-list (cons tab-stop tab-stop-list)) | |
4158 | (skip-syntax-forward "^ ") ; skip following R, C, `;', etc. | |
4159 | (skip-chars-forward " \t") | |
4160 | ))) | |
4161 | (woman-delete-line 1) ; ignore any remaining arguments | |
4162 | (setq tab-stop-list (reverse tab-stop-list)) | |
4163 | (woman2-format-paragraphs to)) | |
4164 | ||
4165 | (defsubst woman-get-tab-stop (tab-stop-list) | |
4166 | "If TAB-STOP-LIST is a cons, return its car, else return TAB-STOP-LIST." | |
4167 | (if (consp tab-stop-list) (car tab-stop-list) tab-stop-list)) | |
4168 | ||
4169 | (defun woman-tab-to-tab-stop () | |
4170 | "Insert spaces to next defined tab-stop column. | |
4171 | The variable `tab-stop-list' is a list of columns where there are tab stops: | |
4172 | pairs (COLUMN . TYPE) where type is either R or C." | |
4173 | ;; Based on tab-to-tab-stop in indent.el. | |
4174 | ;; R & C tabs probably not quite right! | |
4175 | (delete-backward-char 1) | |
4176 | (let ((tabs tab-stop-list)) | |
4177 | (while (and tabs (>= (current-column) | |
4178 | (woman-get-tab-stop (car tabs)))) | |
4179 | (setq tabs (cdr tabs))) | |
4180 | (if tabs | |
4181 | (let* ((tab (car tabs)) | |
4182 | (type (and (consp tab) (cdr tab))) | |
4183 | eol n) | |
4184 | (if type | |
4185 | (setq tab (woman-get-tab-stop tab) | |
4186 | eol (save-excursion (end-of-line) (point)) | |
4187 | n (save-excursion | |
4188 | (search-forward "\t" eol t)) | |
4189 | n (- (if n (1- n) eol) (point)) | |
4190 | tab (- tab (if (eq type ?C) (/ n 2) n))) ) | |
4191 | (setq n (- tab (current-column))) | |
4192 | (while (> n 0) | |
4193 | (insert ?\ ) | |
4194 | (setq n (1- n)))) | |
4195 | (insert ?\ )))) | |
4196 | ||
4197 | (defun woman2-DT (to) | |
4198 | ".DT -- Restore default tabs at TO. | |
4199 | (Breaks, but should not.)" | |
4200 | ;; Currently just terminates special tab processing. | |
4201 | (setq tab-stop-list nil) | |
4202 | (woman-delete-line 1) ; ignore any arguments | |
4203 | (woman2-format-paragraphs to)) | |
4204 | ||
4205 | (defun woman2-fc (to) | |
4206 | ".fc a b -- Set field delimiter a and pad character b at TO. | |
4207 | A VERY FIRST ATTEMPT to make fields at least readable! | |
4208 | Needs doing properly!" | |
4209 | (if (eolp) | |
4210 | (woman-delete-whole-line) ; ignore! | |
4211 | (let ((delim (following-char)) | |
4212 | (pad ?\ ) end) ; pad defaults to space | |
4213 | (forward-char) | |
4214 | (skip-chars-forward " \t") | |
4215 | (or (eolp) (setq pad (following-char))) | |
4216 | (woman-delete-whole-line) | |
4217 | (save-excursion | |
4218 | (if (re-search-forward "^[.'][ \t]*fc\\s " nil t) | |
4219 | (setq end (match-beginning 0)))) | |
4220 | ;; A field is contained between a pair of field delimiter | |
4221 | ;; characters and consists of sub-strings separated by padding | |
4222 | ;; indicator characters: | |
4223 | (setq delim (string delim ?[ ?^ delim ?] ?* delim)) | |
4224 | (save-excursion | |
4225 | (while (re-search-forward delim end t) | |
4226 | (goto-char (match-beginning 0)) | |
4227 | (delete-char 1) | |
4228 | (insert woman-unpadded-space-char) | |
4229 | (goto-char (match-end 0)) | |
4230 | (delete-backward-char 1) | |
4231 | (insert-before-markers woman-unpadded-space-char) | |
4232 | (subst-char-in-region | |
4233 | (match-beginning 0) (match-end 0) | |
4234 | pad woman-unpadded-space-char t) | |
4235 | )) | |
4236 | )) | |
4237 | (woman2-format-paragraphs to)) | |
4238 | ||
4239 | \f | |
4240 | ;;; WoMan message logging: | |
4241 | ||
4242 | ;;; The basis for this logging code was shamelessly pirated from bytecomp.el | |
4243 | ;;; by Jamie Zawinski <jwz@lucid.com> & Hallvard Furuseth <hbf@ulrik.uio.no> | |
4244 | ||
4245 | (defvar WoMan-current-file nil) ; bound in woman-really-find-file | |
4246 | (defvar WoMan-Log-header-point-max nil) | |
4247 | ||
4248 | (defun WoMan-log-begin () | |
4249 | "Log the beginning of formatting in *WoMan-Log*." | |
4250 | (let ((WoMan-current-buffer (buffer-name))) | |
4251 | (save-excursion | |
4252 | (set-buffer (get-buffer-create "*WoMan-Log*")) | |
4253 | (or (eq major-mode 'view-mode) (view-mode 1)) | |
4254 | (setq buffer-read-only nil) | |
4255 | (goto-char (point-max)) | |
4256 | (insert "\n\^L\nFormatting " | |
4257 | (if (stringp WoMan-current-file) | |
4258 | (concat "file " WoMan-current-file) | |
4259 | (concat "buffer " WoMan-current-buffer)) | |
4260 | " at " (current-time-string) "\n") | |
4261 | (setq WoMan-Log-header-point-max (point-max)) | |
4262 | ))) | |
4263 | ||
4264 | (defun WoMan-log (format &rest args) | |
4265 | "Log a message out of FORMAT control string and optional ARGS." | |
4266 | (WoMan-log-1 (apply 'format format args))) | |
4267 | ||
4268 | (defun WoMan-warn (format &rest args) | |
4269 | "Log a warning message out of FORMAT control string and optional ARGS." | |
4270 | (setq format (apply 'format format args)) | |
4271 | (WoMan-log-1 (concat "** " format))) | |
4272 | ||
4273 | (defun WoMan-warn-ignored (request ignored) | |
4274 | "Log a warning message about ignored directive REQUEST. | |
4275 | IGNORED is a string appended to the log message." | |
4276 | (let ((tail | |
4277 | (buffer-substring (point) | |
4278 | (save-excursion (end-of-line) (point))))) | |
4279 | (if (and (> (length tail) 0) | |
4280 | (/= (string-to-char tail) ?\ )) | |
4281 | (setq tail (concat " " tail))) | |
4282 | (WoMan-log-1 | |
4283 | (concat "** " request tail " request " ignored)))) | |
4284 | ||
4285 | (defun WoMan-log-end (time) | |
4286 | "Log the end of formatting in *WoMan-Log*. | |
4287 | TIME specifies the time it took to format the man page, to be printed | |
4288 | with the message." | |
4289 | (WoMan-log-1 (format "Formatting time %d seconds." time) 'end)) | |
4290 | ||
4291 | (defun WoMan-log-1 (string &optional end) | |
4292 | "Log a message STRING in *WoMan-Log*. | |
4293 | Optional argument END, if non-nil, means make buffer read-only after logging | |
4294 | the message." | |
4295 | (save-excursion | |
4296 | (set-buffer (get-buffer-create "*WoMan-Log*")) | |
4297 | (goto-char (point-max)) | |
4298 | (or end (insert " ")) (insert string "\n") | |
4299 | (if end | |
4300 | (setq buffer-read-only t) | |
4301 | (if woman-show-log | |
4302 | (select-window ; to return to | |
4303 | (prog1 (selected-window) ; WoMan window | |
4304 | (select-window (display-buffer (current-buffer))) | |
4305 | (cond (WoMan-Log-header-point-max | |
4306 | (goto-char WoMan-Log-header-point-max) | |
4307 | (forward-line -1) | |
4308 | (recenter 0))) | |
4309 | ))))) | |
4310 | nil) ; for woman-file-readable-p etc. | |
4311 | ||
4312 | (provide 'woman) | |
4313 | ||
4314 | ;;; woman.el ends here |