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c0274f38 | 1 | ;;; completion.el --- dynamic word-completion code |
1add72b5 | 2 | ;; Copyright (C) 1990, 1993 Free Software Foundation, Inc. |
c0274f38 | 3 | |
af4d5234 | 4 | ;; Maintainer: FSF |
e9571d2a | 5 | ;; Keywords: abbrev |
1add72b5 RS |
6 | ;; Author: Jim Salem <salem@think.com> and Brewster Kahle <brewster@think.com> |
7 | ;; of Thinking Machines Inc. | |
d1c7011d | 8 | |
1add72b5 | 9 | ;; This file is part of GNU Emacs. |
d1c7011d | 10 | |
1add72b5 RS |
11 | ;; GNU Emacs is free software; you can redistribute it and/or modify |
12 | ;; it under the terms of the GNU General Public License as published by | |
13 | ;; the Free Software Foundation; either version 2, or (at your option) | |
14 | ;; any later version. | |
15 | ||
16 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
17 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | ;; GNU General Public License for more details. | |
20 | ||
21 | ;; You should have received a copy of the GNU General Public License | |
22 | ;; along with GNU Emacs; see the file COPYING. If not, write to | |
23 | ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. | |
24 | ||
25 | ;;; Commentary: | |
59ca07b5 RS |
26 | ;;; |
27 | ;;; What to put in .emacs | |
28 | ;;;----------------------- | |
1add72b5 | 29 | ;;; (load "completion") |
59ca07b5 | 30 | ;;; (initialize-completions) |
59ca07b5 RS |
31 | \f |
32 | ;;;--------------------------------------------------------------------------- | |
33 | ;;; Documentation [Slightly out of date] | |
34 | ;;;--------------------------------------------------------------------------- | |
35 | ;;; (also check the documentation string of the functions) | |
36 | ;;; | |
37 | ;;; Introduction | |
38 | ;;;--------------- | |
39 | ;;; | |
40 | ;;; After you type a few characters, pressing the "complete" key inserts | |
41 | ;;; the rest of the word you are likely to type. | |
42 | ;;; | |
43 | ;;; This watches all the words that you type and remembers them. When | |
44 | ;;; typing a new word, pressing "complete" (meta-return) "completes" the | |
45 | ;;; word by inserting the most recently used word that begins with the | |
46 | ;;; same characters. If you press meta-return repeatedly, it cycles | |
47 | ;;; through all the words it knows about. | |
48 | ;;; | |
49 | ;;; If you like the completion then just continue typing, it is as if you | |
50 | ;;; entered the text by hand. If you want the inserted extra characters | |
51 | ;;; to go away, type control-w or delete. More options are described below. | |
52 | ;;; | |
53 | ;;; The guesses are made in the order of the most recently "used". Typing | |
54 | ;;; in a word and then typing a separator character (such as a space) "uses" | |
55 | ;;; the word. So does moving a cursor over the word. If no words are found, | |
56 | ;;; it uses an extended version of the dabbrev style completion. | |
57 | ;;; | |
58 | ;;; You automatically save the completions you use to a file between | |
59 | ;;; sessions. | |
60 | ;;; | |
61 | ;;; Completion enables programmers to enter longer, more descriptive | |
62 | ;;; variable names while typing fewer keystrokes than they normally would. | |
63 | ;;; | |
64 | ;;; | |
65 | ;;; Full documentation | |
66 | ;;;--------------------- | |
67 | ;;; | |
68 | ;;; A "word" is any string containing characters with either word or symbol | |
eb8c3be9 | 69 | ;;; syntax. [E.G. Any alphanumeric string with hyphens, underscores, etc.] |
59ca07b5 RS |
70 | ;;; Unless you change the constants, you must type at least three characters |
71 | ;;; for the word to be recognized. Only words longer than 6 characters are | |
72 | ;;; saved. | |
73 | ;;; | |
74 | ;;; When you load this file, completion will be on. I suggest you use the | |
eb8c3be9 | 75 | ;;; compiled version (because it is noticeably faster). |
59ca07b5 RS |
76 | ;;; |
77 | ;;; M-X completion-mode toggles whether or not new words are added to the | |
a7a2b1f6 | 78 | ;;; database by changing the value of enable-completion. |
59ca07b5 RS |
79 | ;;; |
80 | ;;; SAVING/LOADING COMPLETIONS | |
81 | ;;; Completions are automatically saved from one session to another | |
a7a2b1f6 | 82 | ;;; (unless save-completions-flag or enable-completion is nil). |
59ca07b5 RS |
83 | ;;; Loading this file (or calling initialize-completions) causes EMACS |
84 | ;;; to load a completions database for a saved completions file | |
85 | ;;; (default: ~/.completions). When you exit, EMACS saves a copy of the | |
86 | ;;; completions that you | |
87 | ;;; often use. When you next start, EMACS loads in the saved completion file. | |
88 | ;;; | |
89 | ;;; The number of completions saved depends loosely on | |
90 | ;;; *saved-completions-decay-factor*. Completions that have never been | |
91 | ;;; inserted via "complete" are not saved. You are encouraged to experiment | |
92 | ;;; with different functions (see compute-completion-min-num-uses). | |
93 | ;;; | |
94 | ;;; Some completions are permanent and are always saved out. These | |
95 | ;;; completions have their num-uses slot set to T. Use | |
96 | ;;; add-permanent-completion to do this | |
97 | ;;; | |
a7a2b1f6 | 98 | ;;; Completions are saved only if enable-completion is T. The number of old |
59ca07b5 | 99 | ;;; versions kept of the saved completions file is controlled by |
a7a2b1f6 | 100 | ;;; completions-file-versions-kept. |
59ca07b5 RS |
101 | ;;; |
102 | ;;; COMPLETE KEY OPTIONS | |
103 | ;;; The complete function takes a numeric arguments. | |
104 | ;;; control-u :: leave the point at the beginning of the completion rather | |
105 | ;;; than the middle. | |
106 | ;;; a number :: rotate through the possible completions by that amount | |
107 | ;;; `-' :: same as -1 (insert previous completion) | |
108 | ;;; | |
109 | ;;; HOW THE DATABASE IS MAINTAINED | |
110 | ;;; <write> | |
111 | ;;; | |
112 | ;;; UPDATING THE DATABASE MANUALLY | |
113 | ;;; m-x kill-completion | |
114 | ;;; kills the completion at point. | |
115 | ;;; m-x add-completion | |
116 | ;;; m-x add-permanent-completion | |
117 | ;;; | |
118 | ;;; UPDATING THE DATABASE FROM A SOURCE CODE FILE | |
119 | ;;; m-x add-completions-from-buffer | |
120 | ;;; Parses all the definition names from a C or LISP mode buffer and | |
121 | ;;; adds them to the completion database. | |
122 | ;;; | |
123 | ;;; m-x add-completions-from-lisp-file | |
124 | ;;; Parses all the definition names from a C or Lisp mode file and | |
125 | ;;; adds them to the completion database. | |
126 | ;;; | |
127 | ;;; UPDATING THE DATABASE FROM A TAGS TABLE | |
128 | ;;; m-x add-completions-from-tags-table | |
129 | ;;; Adds completions from the current tags-table-buffer. | |
130 | ;;; | |
131 | ;;; HOW A COMPLETION IS FOUND | |
132 | ;;; <write> | |
133 | ;;; | |
134 | ;;; STRING CASING | |
135 | ;;; Completion is string case independent if case-fold-search has its | |
136 | ;;; normal default of T. Also when the completion is inserted the case of the | |
137 | ;;; entry is coerced appropriately. | |
138 | ;;; [E.G. APP --> APPROPRIATELY app --> appropriately | |
139 | ;;; App --> Appropriately] | |
140 | ;;; | |
141 | ;;; INITIALIZATION | |
142 | ;;; The form `(initialize-completions)' initializes the completion system by | |
143 | ;;; trying to load in the user's completions. After the first cal, further | |
144 | ;;; calls have no effect so one should be careful not to put the form in a | |
145 | ;;; site's standard site-init file. | |
146 | ;;; | |
147 | ;;;--------------------------------------------------------------------------- | |
148 | ;;; | |
149 | ;;; | |
150 | \f | |
59ca07b5 RS |
151 | ;;;--------------------------------------------------------------------------- |
152 | ;;; Functions you might like to call | |
153 | ;;;--------------------------------------------------------------------------- | |
154 | ;;; | |
155 | ;;; add-completion string &optional num-uses | |
156 | ;;; Adds a new string to the database | |
157 | ;;; | |
158 | ;;; add-permanent-completion string | |
159 | ;;; Adds a new string to the database with num-uses = T | |
160 | ;;; | |
161 | ||
162 | ;;; kill-completion string | |
163 | ;;; Kills the completion from the database. | |
164 | ;;; | |
165 | ;;; clear-all-completions | |
166 | ;;; Clears the database | |
167 | ;;; | |
168 | ;;; list-all-completions | |
169 | ;;; Returns a list of all completions. | |
170 | ;;; | |
171 | ;;; | |
172 | ;;; next-completion string &optional index | |
173 | ;;; Returns a completion entry that starts with string. | |
174 | ;;; | |
175 | ;;; find-exact-completion string | |
176 | ;;; Returns a completion entry that exactly matches string. | |
177 | ;;; | |
178 | ;;; complete | |
179 | ;;; Inserts a completion at point | |
180 | ;;; | |
181 | ;;; initialize-completions | |
182 | ;;; Loads the completions file and sets up so that exiting emacs will | |
183 | ;;; save them. | |
184 | ;;; | |
185 | ;;; save-completions-to-file &optional filename | |
186 | ;;; load-completions-from-file &optional filename | |
187 | ;;; | |
188 | ;;;----------------------------------------------- | |
189 | ;;; Other functions | |
190 | ;;;----------------------------------------------- | |
191 | ;;; | |
192 | ;;; get-completion-list string | |
193 | ;;; | |
194 | ;;; These things are for manipulating the structure | |
195 | ;;; make-completion string num-uses | |
196 | ;;; completion-num-uses completion | |
197 | ;;; completion-string completion | |
198 | ;;; set-completion-num-uses completion num-uses | |
199 | ;;; set-completion-string completion string | |
200 | ;;; | |
201 | ;;; | |
202 | \f | |
203 | ;;;----------------------------------------------- | |
204 | ;;; To Do :: (anybody ?) | |
205 | ;;;----------------------------------------------- | |
206 | ;;; | |
207 | ;;; Implement Lookup and keyboard interface in C | |
208 | ;;; Add package prefix smarts (for Common Lisp) | |
209 | ;;; Add autoprompting of possible completions after every keystroke (fast | |
210 | ;;; terminals only !) | |
211 | ;;; Add doc. to texinfo | |
212 | ;;; | |
213 | ;;; | |
214 | ;;;----------------------------------------------- | |
d1c7011d | 215 | ;;; Change Log: |
59ca07b5 RS |
216 | ;;;----------------------------------------------- |
217 | ;;; Sometime in '84 Brewster implemented a somewhat buggy version for | |
218 | ;;; Symbolics LISPMs. | |
219 | ;;; Jan. '85 Jim became enamored of the idea and implemented a faster, | |
220 | ;;; more robust version. | |
221 | ;;; With input from many users at TMC, (rose, craig, and gls come to mind), | |
222 | ;;; the current style of interface was developed. | |
223 | ;;; 9/87, Jim and Brewster took terminals home. Yuck. After | |
224 | ;;; complaining for a while Brewester implemented a subset of the current | |
225 | ;;; LISPM version for GNU Emacs. | |
226 | ;;; 8/88 After complaining for a while (and with sufficient | |
227 | ;;; promised rewards), Jim reimplemented a version of GNU completion | |
228 | ;;; superior to that of the LISPM version. | |
229 | ;;; | |
230 | ;;;----------------------------------------------- | |
eb8c3be9 | 231 | ;;; Acknowledgements |
59ca07b5 RS |
232 | ;;;----------------------------------------------- |
233 | ;;; Cliff Lasser (cal@think.com), Kevin Herbert (kph@cisco.com), | |
234 | ;;; eero@media-lab, kgk@cs.brown.edu, jla@ai.mit.edu, | |
235 | ;;; | |
236 | ;;;----------------------------------------------- | |
237 | ;;; Change Log | |
238 | ;;;----------------------------------------------- | |
239 | ;;; From version 9 to 10 | |
240 | ;;; - Allowance for non-integral *completion-version* nos. | |
241 | ;;; - Fix cmpl-apply-as-top-level for keyboard macros | |
242 | ;;; - Fix broken completion merging (in save-completions-to-file) | |
243 | ;;; - More misc. fixes for version 19.0 of emacs | |
244 | ;;; | |
245 | ;;; From Version 8 to 9 | |
246 | ;;; - Ported to version 19.0 of emacs (backcompatible with version 18) | |
247 | ;;; - Added add-completions-from-tags-table (with thanks to eero@media-lab) | |
248 | ;;; | |
249 | ;;; From Version 7 to 8 | |
250 | ;;; - Misc. changes to comments | |
251 | ;;; - new completion key bindings: c-x o, M->, M-<, c-a, c-e | |
252 | ;;; - cdabbrev now checks all the visible window buffers and the "other buffer" | |
253 | ;;; - `%' is now a symbol character rather than a separator (except in C mode) | |
254 | ;;; | |
255 | ;;; From Version 6 to 7 | |
256 | ;;; - Fixed bug with saving out .completion file the first time | |
257 | ;;; | |
258 | ;;; From Version 5 to 6 | |
259 | ;;; - removed statistics recording | |
260 | ;;; - reworked advise to handle autoloads | |
261 | ;;; - Fixed fortran mode support | |
262 | ;;; - Added new cursor motion triggers | |
263 | ;;; | |
264 | ;;; From Version 4 to 5 | |
265 | ;;; - doesn't bother saving if nothing has changed | |
266 | ;;; - auto-save if haven't used for a 1/2 hour | |
267 | ;;; - save period extended to two weeks | |
268 | ;;; - minor fix to capitalization code | |
269 | ;;; - added *completion-auto-save-period* to variables recorded. | |
270 | ;;; - added reenter protection to cmpl-record-statistics-filter | |
271 | ;;; - added backup protection to save-completions-to-file (prevents | |
272 | ;;; problems with disk full errors) | |
273 | \f | |
d1c7011d ER |
274 | ;;; Code: |
275 | ||
59ca07b5 RS |
276 | ;;;--------------------------------------------------------------------------- |
277 | ;;; User changeable parameters | |
278 | ;;;--------------------------------------------------------------------------- | |
279 | ||
a7a2b1f6 RS |
280 | (defvar enable-completion t |
281 | "*Non-nil means enable recording and saving of completions. | |
282 | If nil, no new words added to the database or saved to the init file.") | |
59ca07b5 | 283 | |
a7a2b1f6 RS |
284 | (defvar save-completions-flag t |
285 | "*Non-nil means save most-used completions when exiting Emacs. | |
286 | See also `saved-completions-retention-time'.") | |
59ca07b5 | 287 | |
a7a2b1f6 | 288 | (defvar save-completions-file-name "~/.completions" |
59ca07b5 RS |
289 | "*The filename to save completions to.") |
290 | ||
a7a2b1f6 RS |
291 | (defvar save-completions-retention-time 336 |
292 | "*Discard a completion if unused for this many hours. | |
293 | \(1 day = 24, 1 week = 168). If this is 0, non-permanent completions | |
353ea2e6 | 294 | will not be saved unless these are used. Default is two weeks.") |
59ca07b5 | 295 | |
a7a2b1f6 RS |
296 | (defvar completion-on-separator-character nil |
297 | "*Non-nil means separator characters mark previous word as used. | |
298 | This means the word will be saved as a completion.") | |
59ca07b5 | 299 | |
a7a2b1f6 RS |
300 | (defvar completions-file-versions-kept kept-new-versions |
301 | "*Number of versions to keep for the saved completions file.") | |
59ca07b5 | 302 | |
a7a2b1f6 RS |
303 | (defvar completion-prompt-speed-threshold 4800 |
304 | "*Minimum output speed at which to display next potential completion.") | |
59ca07b5 | 305 | |
a7a2b1f6 RS |
306 | (defvar completion-cdabbrev-prompt-flag nil |
307 | "*If non-nil, the next completion prompt does a cdabbrev search. | |
59ca07b5 RS |
308 | This can be time consuming.") |
309 | ||
a7a2b1f6 RS |
310 | (defvar completion-search-distance 15000 |
311 | "*How far to search in the buffer when looking for completions. | |
312 | In number of characters. If nil, search the whole buffer.") | |
59ca07b5 | 313 | |
a7a2b1f6 RS |
314 | (defvar completions-merging-modes '(lisp c) |
315 | "*List of modes {`c' or `lisp'} for automatic completions merging. | |
316 | Definitions from visited files which have these modes | |
317 | are automatically added to the completion database.") | |
59ca07b5 | 318 | |
a7a2b1f6 RS |
319 | ;;;(defvar *record-cmpl-statistics-p* nil |
320 | ;;; "*If non-nil, record completion statistics.") | |
59ca07b5 | 321 | |
a7a2b1f6 RS |
322 | ;;;(defvar *completion-auto-save-period* 1800 |
323 | ;;; "*The period in seconds to wait for emacs to be idle before autosaving | |
324 | ;;;the completions. Default is a 1/2 hour.") | |
59ca07b5 | 325 | |
a7a2b1f6 | 326 | (defconst completion-min-length nil ;; defined below in eval-when |
59ca07b5 RS |
327 | "*The minimum length of a stored completion. |
328 | DON'T CHANGE WITHOUT RECOMPILING ! This is used by macros.") | |
329 | ||
a7a2b1f6 | 330 | (defconst completion-max-length nil ;; defined below in eval-when |
59ca07b5 RS |
331 | "*The maximum length of a stored completion. |
332 | DON'T CHANGE WITHOUT RECOMPILING ! This is used by macros.") | |
333 | ||
a7a2b1f6 | 334 | (defconst completion-prefix-min-length nil ;; defined below in eval-when |
59ca07b5 RS |
335 | "The minimum length of a completion search string. |
336 | DON'T CHANGE WITHOUT RECOMPILING ! This is used by macros.") | |
337 | ||
338 | (defmacro eval-when-compile-load-eval (&rest body) | |
339 | ;; eval everything before expanding | |
340 | (mapcar 'eval body) | |
353ea2e6 | 341 | (cons 'progn body)) |
59ca07b5 | 342 | |
136f8f67 RS |
343 | (eval-when-compile |
344 | (defvar completion-gensym-counter 0) | |
345 | (defun completion-gensym (&optional arg) | |
346 | "Generate a new uninterned symbol. | |
347 | The name is made by appending a number to PREFIX, default \"G\"." | |
348 | (let ((prefix (if (stringp arg) arg "G")) | |
349 | (num (if (integerp arg) arg | |
350 | (prog1 completion-gensym-counter | |
351 | (setq completion-gensym-counter (1+ completion-gensym-counter)))))) | |
352 | (make-symbol (format "%s%d" prefix num))))) | |
353 | ||
354 | (defmacro completion-dolist (spec &rest body) | |
355 | "(completion-dolist (VAR LIST [RESULT]) BODY...): loop over a list. | |
356 | Evaluate BODY with VAR bound to each `car' from LIST, in turn. | |
357 | Then evaluate RESULT to get return value, default nil." | |
358 | (let ((temp (completion-gensym "--dolist-temp--"))) | |
359 | (append (list 'let (list (list temp (nth 1 spec)) (car spec)) | |
360 | (append (list 'while temp | |
361 | (list 'setq (car spec) (list 'car temp))) | |
362 | body (list (list 'setq temp | |
363 | (list 'cdr temp))))) | |
364 | (if (cdr (cdr spec)) | |
365 | (cons (list 'setq (car spec) nil) (cdr (cdr spec))) | |
366 | '(nil))))) | |
367 | ||
59ca07b5 RS |
368 | (defun completion-eval-when () |
369 | (eval-when-compile-load-eval | |
370 | ;; These vars. are defined at both compile and load time. | |
a7a2b1f6 RS |
371 | (setq completion-min-length 6) |
372 | (setq completion-max-length 200) | |
373 | (setq completion-prefix-min-length 3))) | |
59ca07b5 RS |
374 | |
375 | (completion-eval-when) | |
376 | ||
377 | ;;;--------------------------------------------------------------------------- | |
378 | ;;; Internal Variables | |
379 | ;;;--------------------------------------------------------------------------- | |
380 | ||
381 | (defvar cmpl-initialized-p nil | |
a7a2b1f6 RS |
382 | "Set to t when the completion system is initialized. |
383 | Indicates that the old completion file has been read in.") | |
59ca07b5 RS |
384 | |
385 | (defvar cmpl-completions-accepted-p nil | |
a7a2b1f6 RS |
386 | "Set to t as soon as the first completion has been accepted. |
387 | Used to decide whether to save completions.") | |
59ca07b5 | 388 | |
136f8f67 | 389 | (defvar cmpl-preceding-syntax) |
438c6ef0 RS |
390 | |
391 | (defvar completion-string) | |
59ca07b5 RS |
392 | \f |
393 | ;;;--------------------------------------------------------------------------- | |
394 | ;;; Low level tools | |
395 | ;;;--------------------------------------------------------------------------- | |
396 | ||
397 | ;;;----------------------------------------------- | |
398 | ;;; Misc. | |
399 | ;;;----------------------------------------------- | |
400 | ||
59ca07b5 RS |
401 | (defun minibuffer-window-selected-p () |
402 | "True iff the current window is the minibuffer." | |
a7a2b1f6 | 403 | (window-minibuffer-p (selected-window))) |
59ca07b5 | 404 | |
46f950ca | 405 | ;; This used to be `(eval form)'. Eval FORM at run time now. |
a7a2b1f6 | 406 | (defmacro cmpl-read-time-eval (form) |
46f950ca | 407 | form) |
59ca07b5 RS |
408 | |
409 | ;;;----------------------------------------------- | |
410 | ;;; String case coercion | |
411 | ;;;----------------------------------------------- | |
412 | ||
413 | (defun cmpl-string-case-type (string) | |
414 | "Returns :capitalized, :up, :down, :mixed, or :neither." | |
415 | (let ((case-fold-search nil)) | |
416 | (cond ((string-match "[a-z]" string) | |
417 | (cond ((string-match "[A-Z]" string) | |
418 | (cond ((and (> (length string) 1) | |
419 | (null (string-match "[A-Z]" string 1))) | |
420 | ':capitalized) | |
421 | (t | |
422 | ':mixed))) | |
423 | (t ':down))) | |
424 | (t | |
425 | (cond ((string-match "[A-Z]" string) | |
426 | ':up) | |
427 | (t ':neither)))) | |
428 | )) | |
429 | ||
430 | ;;; Tests - | |
431 | ;;; (cmpl-string-case-type "123ABCDEF456") --> :up | |
432 | ;;; (cmpl-string-case-type "123abcdef456") --> :down | |
433 | ;;; (cmpl-string-case-type "123aBcDeF456") --> :mixed | |
434 | ;;; (cmpl-string-case-type "123456") --> :neither | |
435 | ;;; (cmpl-string-case-type "Abcde123") --> :capitalized | |
436 | ||
437 | (defun cmpl-coerce-string-case (string case-type) | |
438 | (cond ((eq case-type ':down) (downcase string)) | |
439 | ((eq case-type ':up) (upcase string)) | |
440 | ((eq case-type ':capitalized) | |
441 | (setq string (downcase string)) | |
442 | (aset string 0 (logand ?\337 (aref string 0))) | |
443 | string) | |
444 | (t string) | |
445 | )) | |
446 | ||
447 | (defun cmpl-merge-string-cases (string-to-coerce given-string) | |
448 | (let ((string-case-type (cmpl-string-case-type string-to-coerce)) | |
449 | ) | |
450 | (cond ((memq string-case-type '(:down :up :capitalized)) | |
451 | ;; Found string is in a standard case. Coerce to a type based on | |
452 | ;; the given string | |
453 | (cmpl-coerce-string-case string-to-coerce | |
454 | (cmpl-string-case-type given-string)) | |
455 | ) | |
456 | (t | |
457 | ;; If the found string is in some unusual case, just insert it | |
458 | ;; as is | |
459 | string-to-coerce) | |
460 | ))) | |
461 | ||
462 | ;;; Tests - | |
463 | ;;; (cmpl-merge-string-cases "AbCdEf456" "abc") --> AbCdEf456 | |
464 | ;;; (cmpl-merge-string-cases "abcdef456" "ABC") --> ABCDEF456 | |
465 | ;;; (cmpl-merge-string-cases "ABCDEF456" "Abc") --> Abcdef456 | |
466 | ;;; (cmpl-merge-string-cases "ABCDEF456" "abc") --> abcdef456 | |
467 | ||
468 | \f | |
a7a2b1f6 RS |
469 | (defun cmpl-hours-since-origin () |
470 | (let ((time (current-time))) | |
46f950ca RS |
471 | (truncate |
472 | (+ (* (/ (car time) 3600.0) (lsh 1 16)) | |
473 | (/ (nth 2 time) 3600.0))))) | |
59ca07b5 RS |
474 | \f |
475 | ;;;--------------------------------------------------------------------------- | |
476 | ;;; "Symbol" parsing functions | |
477 | ;;;--------------------------------------------------------------------------- | |
478 | ;;; The functions symbol-before-point, symbol-under-point, etc. quickly return | |
479 | ;;; an appropriate symbol string. The strategy is to temporarily change | |
480 | ;;; the syntax table to enable fast symbol searching. There are three classes | |
481 | ;;; of syntax in these "symbol" syntax tables :: | |
482 | ;;; | |
483 | ;;; syntax (?_) - "symbol" chars (e.g. alphanumerics) | |
484 | ;;; syntax (?w) - symbol chars to ignore at end of words (e.g. period). | |
485 | ;;; syntax (? ) - everything else | |
486 | ;;; | |
487 | ;;; Thus by judicious use of scan-sexps and forward-word, we can get | |
488 | ;;; the word we want relatively fast and without consing. | |
489 | ;;; | |
490 | ;;; Why do we need a separate category for "symbol chars to ignore at ends" ? | |
491 | ;;; For example, in LISP we want starting :'s trimmed | |
492 | ;;; so keyword argument specifiers also define the keyword completion. And, | |
493 | ;;; for example, in C we want `.' appearing in a structure ref. to | |
494 | ;;; be kept intact in order to store the whole structure ref.; however, if | |
495 | ;;; it appears at the end of a symbol it should be discarded because it is | |
496 | ;;; probably used as a period. | |
497 | ||
498 | ;;; Here is the default completion syntax :: | |
499 | ;;; Symbol chars :: A-Z a-z 0-9 @ / \ * + ~ $ < > % | |
500 | ;;; Symbol chars to ignore at ends :: _ : . - | |
501 | ;;; Separator chars. :: <tab> <space> ! ^ & ( ) = ` | { } [ ] ; " ' # | |
502 | ;;; , ? <Everything else> | |
503 | ||
504 | ;;; Mode specific differences and notes :: | |
505 | ;;; LISP diffs -> | |
506 | ;;; Symbol chars :: ! & ? = ^ | |
507 | ;;; | |
508 | ;;; C diffs -> | |
509 | ;;; Separator chars :: + * / : % | |
eb8c3be9 | 510 | ;;; A note on the hyphen (`-'). Perhaps the hyphen should also be a separator |
59ca07b5 RS |
511 | ;;; char., however, we wanted to have completion symbols include pointer |
512 | ;;; references. For example, "foo->bar" is a symbol as far as completion is | |
513 | ;;; concerned. | |
514 | ;;; | |
515 | ;;; FORTRAN diffs -> | |
516 | ;;; Separator chars :: + - * / : | |
517 | ;;; | |
518 | ;;; Pathname diffs -> | |
519 | ;;; Symbol chars :: . | |
520 | ;;; Of course there is no pathname "mode" and in fact we have not implemented | |
521 | ;;; this table. However, if there was such a mode, this is what it would look | |
522 | ;;; like. | |
523 | ||
524 | ;;;----------------------------------------------- | |
525 | ;;; Table definitions | |
526 | ;;;----------------------------------------------- | |
527 | ||
a7a2b1f6 | 528 | (defun cmpl-make-standard-completion-syntax-table () |
59ca07b5 | 529 | (let ((table (make-vector 256 0)) ;; default syntax is whitespace |
136f8f67 | 530 | i) |
59ca07b5 | 531 | ;; alpha chars |
136f8f67 RS |
532 | (setq i 0) |
533 | (while (< i 26) | |
59ca07b5 | 534 | (modify-syntax-entry (+ ?a i) "_" table) |
136f8f67 RS |
535 | (modify-syntax-entry (+ ?A i) "_" table) |
536 | (setq i (1+ i))) | |
59ca07b5 | 537 | ;; digit chars. |
136f8f67 RS |
538 | (setq i 0) |
539 | (while (< i 10) | |
540 | (modify-syntax-entry (+ ?0 i) "_" table) | |
541 | (setq i (1+ i))) | |
59ca07b5 RS |
542 | ;; Other ones |
543 | (let ((symbol-chars '(?@ ?/ ?\\ ?* ?+ ?~ ?$ ?< ?> ?%)) | |
544 | (symbol-chars-ignore '(?_ ?- ?: ?.)) | |
545 | ) | |
136f8f67 | 546 | (completion-dolist (char symbol-chars) |
59ca07b5 | 547 | (modify-syntax-entry char "_" table)) |
136f8f67 | 548 | (completion-dolist (char symbol-chars-ignore) |
59ca07b5 RS |
549 | (modify-syntax-entry char "w" table) |
550 | ) | |
551 | ) | |
552 | table)) | |
553 | ||
a7a2b1f6 | 554 | (defconst cmpl-standard-syntax-table (cmpl-make-standard-completion-syntax-table)) |
59ca07b5 | 555 | |
a7a2b1f6 | 556 | (defun cmpl-make-lisp-completion-syntax-table () |
59ca07b5 RS |
557 | (let ((table (copy-syntax-table cmpl-standard-syntax-table)) |
558 | (symbol-chars '(?! ?& ?? ?= ?^)) | |
559 | ) | |
136f8f67 | 560 | (completion-dolist (char symbol-chars) |
59ca07b5 RS |
561 | (modify-syntax-entry char "_" table)) |
562 | table)) | |
563 | ||
a7a2b1f6 | 564 | (defun cmpl-make-c-completion-syntax-table () |
59ca07b5 RS |
565 | (let ((table (copy-syntax-table cmpl-standard-syntax-table)) |
566 | (separator-chars '(?+ ?* ?/ ?: ?%)) | |
567 | ) | |
136f8f67 | 568 | (completion-dolist (char separator-chars) |
59ca07b5 RS |
569 | (modify-syntax-entry char " " table)) |
570 | table)) | |
571 | ||
a7a2b1f6 | 572 | (defun cmpl-make-fortran-completion-syntax-table () |
59ca07b5 RS |
573 | (let ((table (copy-syntax-table cmpl-standard-syntax-table)) |
574 | (separator-chars '(?+ ?- ?* ?/ ?:)) | |
575 | ) | |
136f8f67 | 576 | (completion-dolist (char separator-chars) |
59ca07b5 RS |
577 | (modify-syntax-entry char " " table)) |
578 | table)) | |
579 | ||
a7a2b1f6 RS |
580 | (defconst cmpl-lisp-syntax-table (cmpl-make-lisp-completion-syntax-table)) |
581 | (defconst cmpl-c-syntax-table (cmpl-make-c-completion-syntax-table)) | |
582 | (defconst cmpl-fortran-syntax-table (cmpl-make-fortran-completion-syntax-table)) | |
59ca07b5 RS |
583 | |
584 | (defvar cmpl-syntax-table cmpl-standard-syntax-table | |
585 | "This variable holds the current completion syntax table.") | |
586 | (make-variable-buffer-local 'cmpl-syntax-table) | |
587 | ||
588 | ;;;----------------------------------------------- | |
589 | ;;; Installing the appropriate mode tables | |
590 | ;;;----------------------------------------------- | |
591 | ||
a7a2b1f6 RS |
592 | (add-hook 'lisp-mode-hook |
593 | '(lambda () | |
594 | (setq cmpl-syntax-table cmpl-lisp-syntax-table))) | |
59ca07b5 | 595 | |
a7a2b1f6 RS |
596 | (add-hook 'c-mode-hook |
597 | '(lambda () | |
598 | (setq cmpl-syntax-table cmpl-c-syntax-table))) | |
59ca07b5 | 599 | |
a7a2b1f6 RS |
600 | (add-hook 'fortran-mode-hook |
601 | '(lambda () | |
602 | (setq cmpl-syntax-table cmpl-fortran-syntax-table) | |
603 | (completion-setup-fortran-mode))) | |
59ca07b5 RS |
604 | |
605 | ;;;----------------------------------------------- | |
606 | ;;; Symbol functions | |
607 | ;;;----------------------------------------------- | |
608 | (defvar cmpl-symbol-start nil | |
a7a2b1f6 | 609 | "Holds first character of symbol, after any completion symbol function.") |
59ca07b5 | 610 | (defvar cmpl-symbol-end nil |
a7a2b1f6 | 611 | "Holds last character of symbol, after any completion symbol function.") |
59ca07b5 RS |
612 | ;;; These are temp. vars. we use to avoid using let. |
613 | ;;; Why ? Small speed improvement. | |
614 | (defvar cmpl-saved-syntax nil) | |
615 | (defvar cmpl-saved-point nil) | |
616 | ||
617 | (defun symbol-under-point () | |
a7a2b1f6 RS |
618 | "Returns the symbol that the point is currently on. |
619 | But only if it is longer than `completion-min-length'." | |
59ca07b5 RS |
620 | (setq cmpl-saved-syntax (syntax-table)) |
621 | (set-syntax-table cmpl-syntax-table) | |
622 | (cond | |
623 | ;; Cursor is on following-char and after preceding-char | |
624 | ((memq (char-syntax (following-char)) '(?w ?_)) | |
625 | (setq cmpl-saved-point (point) | |
626 | cmpl-symbol-start (scan-sexps (1+ cmpl-saved-point) -1) | |
627 | cmpl-symbol-end (scan-sexps cmpl-saved-point 1)) | |
628 | ;; remove chars to ignore at the start | |
629 | (cond ((= (char-syntax (char-after cmpl-symbol-start)) ?w) | |
630 | (goto-char cmpl-symbol-start) | |
631 | (forward-word 1) | |
632 | (setq cmpl-symbol-start (point)) | |
633 | (goto-char cmpl-saved-point) | |
634 | )) | |
635 | ;; remove chars to ignore at the end | |
636 | (cond ((= (char-syntax (char-after (1- cmpl-symbol-end))) ?w) | |
637 | (goto-char cmpl-symbol-end) | |
638 | (forward-word -1) | |
639 | (setq cmpl-symbol-end (point)) | |
640 | (goto-char cmpl-saved-point) | |
641 | )) | |
642 | ;; restore state | |
643 | (set-syntax-table cmpl-saved-syntax) | |
644 | ;; Return completion if the length is reasonable | |
a7a2b1f6 | 645 | (if (and (<= (cmpl-read-time-eval completion-min-length) |
59ca07b5 RS |
646 | (- cmpl-symbol-end cmpl-symbol-start)) |
647 | (<= (- cmpl-symbol-end cmpl-symbol-start) | |
a7a2b1f6 | 648 | (cmpl-read-time-eval completion-max-length))) |
59ca07b5 RS |
649 | (buffer-substring cmpl-symbol-start cmpl-symbol-end)) |
650 | ) | |
651 | (t | |
652 | ;; restore table if no symbol | |
653 | (set-syntax-table cmpl-saved-syntax) | |
654 | nil) | |
655 | )) | |
656 | ||
657 | ;;; tests for symbol-under-point | |
658 | ;;; `^' indicates cursor pos. where value is returned | |
659 | ;;; simple-word-test | |
660 | ;;; ^^^^^^^^^^^^^^^^ --> simple-word-test | |
661 | ;;; _harder_word_test_ | |
662 | ;;; ^^^^^^^^^^^^^^^^^^ --> harder_word_test | |
663 | ;;; .___.______. | |
664 | ;;; --> nil | |
665 | ;;; /foo/bar/quux.hello | |
666 | ;;; ^^^^^^^^^^^^^^^^^^^ --> /foo/bar/quux.hello | |
667 | ;;; | |
668 | ||
669 | (defun symbol-before-point () | |
a7a2b1f6 RS |
670 | "Returns a string of the symbol immediately before point. |
671 | Returns nil if there isn't one longer than `completion-min-length'." | |
59ca07b5 RS |
672 | ;; This is called when a word separator is typed so it must be FAST ! |
673 | (setq cmpl-saved-syntax (syntax-table)) | |
674 | (set-syntax-table cmpl-syntax-table) | |
675 | ;; Cursor is on following-char and after preceding-char | |
676 | (cond ((= (setq cmpl-preceding-syntax (char-syntax (preceding-char))) ?_) | |
677 | ;; No chars. to ignore at end | |
678 | (setq cmpl-symbol-end (point) | |
679 | cmpl-symbol-start (scan-sexps (1+ cmpl-symbol-end) -1) | |
680 | ) | |
681 | ;; remove chars to ignore at the start | |
682 | (cond ((= (char-syntax (char-after cmpl-symbol-start)) ?w) | |
683 | (goto-char cmpl-symbol-start) | |
684 | (forward-word 1) | |
685 | (setq cmpl-symbol-start (point)) | |
686 | (goto-char cmpl-symbol-end) | |
687 | )) | |
688 | ;; restore state | |
689 | (set-syntax-table cmpl-saved-syntax) | |
690 | ;; return value if long enough | |
691 | (if (>= cmpl-symbol-end | |
692 | (+ cmpl-symbol-start | |
a7a2b1f6 | 693 | (cmpl-read-time-eval completion-min-length))) |
59ca07b5 RS |
694 | (buffer-substring cmpl-symbol-start cmpl-symbol-end)) |
695 | ) | |
696 | ((= cmpl-preceding-syntax ?w) | |
697 | ;; chars to ignore at end | |
698 | (setq cmpl-saved-point (point) | |
699 | cmpl-symbol-start (scan-sexps (1+ cmpl-saved-point) -1)) | |
700 | ;; take off chars. from end | |
701 | (forward-word -1) | |
702 | (setq cmpl-symbol-end (point)) | |
703 | ;; remove chars to ignore at the start | |
704 | (cond ((= (char-syntax (char-after cmpl-symbol-start)) ?w) | |
705 | (goto-char cmpl-symbol-start) | |
706 | (forward-word 1) | |
707 | (setq cmpl-symbol-start (point)) | |
708 | )) | |
709 | ;; restore state | |
710 | (goto-char cmpl-saved-point) | |
711 | (set-syntax-table cmpl-saved-syntax) | |
712 | ;; Return completion if the length is reasonable | |
a7a2b1f6 | 713 | (if (and (<= (cmpl-read-time-eval completion-min-length) |
59ca07b5 RS |
714 | (- cmpl-symbol-end cmpl-symbol-start)) |
715 | (<= (- cmpl-symbol-end cmpl-symbol-start) | |
a7a2b1f6 | 716 | (cmpl-read-time-eval completion-max-length))) |
59ca07b5 RS |
717 | (buffer-substring cmpl-symbol-start cmpl-symbol-end)) |
718 | ) | |
719 | (t | |
720 | ;; restore table if no symbol | |
721 | (set-syntax-table cmpl-saved-syntax) | |
722 | nil) | |
723 | )) | |
724 | ||
725 | ;;; tests for symbol-before-point | |
726 | ;;; `^' indicates cursor pos. where value is returned | |
727 | ;;; simple-word-test | |
728 | ;;; ^ --> nil | |
729 | ;;; ^ --> nil | |
730 | ;;; ^ --> simple-w | |
731 | ;;; ^ --> simple-word-test | |
732 | ;;; _harder_word_test_ | |
733 | ;;; ^ --> harder_word_test | |
734 | ;;; ^ --> harder_word_test | |
735 | ;;; ^ --> harder | |
736 | ;;; .___.... | |
737 | ;;; --> nil | |
738 | ||
739 | (defun symbol-under-or-before-point () | |
740 | ;;; This could be made slightly faster but it is better to avoid | |
741 | ;;; copying all the code. | |
742 | ;;; However, it is only used by the completion string prompter. | |
743 | ;;; If it comes into common use, it could be rewritten. | |
744 | (setq cmpl-saved-syntax (syntax-table)) | |
745 | (set-syntax-table cmpl-syntax-table) | |
746 | (cond ((memq (char-syntax (following-char)) '(?w ?_)) | |
747 | (set-syntax-table cmpl-saved-syntax) | |
748 | (symbol-under-point)) | |
749 | (t | |
750 | (set-syntax-table cmpl-saved-syntax) | |
751 | (symbol-before-point)) | |
752 | )) | |
753 | ||
754 | ||
755 | (defun symbol-before-point-for-complete () | |
756 | ;; "Returns a string of the symbol immediately before point | |
757 | ;; or nil if there isn't one. Like symbol-before-point but doesn't trim the | |
758 | ;; end chars." | |
759 | ;; Cursor is on following-char and after preceding-char | |
760 | (setq cmpl-saved-syntax (syntax-table)) | |
761 | (set-syntax-table cmpl-syntax-table) | |
762 | (cond ((memq (setq cmpl-preceding-syntax (char-syntax (preceding-char))) | |
763 | '(?_ ?w)) | |
764 | (setq cmpl-symbol-end (point) | |
765 | cmpl-symbol-start (scan-sexps (1+ cmpl-symbol-end) -1) | |
766 | ) | |
767 | ;; remove chars to ignore at the start | |
768 | (cond ((= (char-syntax (char-after cmpl-symbol-start)) ?w) | |
769 | (goto-char cmpl-symbol-start) | |
770 | (forward-word 1) | |
771 | (setq cmpl-symbol-start (point)) | |
772 | (goto-char cmpl-symbol-end) | |
773 | )) | |
774 | ;; restore state | |
775 | (set-syntax-table cmpl-saved-syntax) | |
776 | ;; Return completion if the length is reasonable | |
a7a2b1f6 RS |
777 | (if (and (<= (cmpl-read-time-eval |
778 | completion-prefix-min-length) | |
59ca07b5 RS |
779 | (- cmpl-symbol-end cmpl-symbol-start)) |
780 | (<= (- cmpl-symbol-end cmpl-symbol-start) | |
a7a2b1f6 | 781 | (cmpl-read-time-eval completion-max-length))) |
59ca07b5 RS |
782 | (buffer-substring cmpl-symbol-start cmpl-symbol-end)) |
783 | ) | |
784 | (t | |
785 | ;; restore table if no symbol | |
786 | (set-syntax-table cmpl-saved-syntax) | |
787 | nil) | |
788 | )) | |
789 | ||
790 | ;;; tests for symbol-before-point-for-complete | |
791 | ;;; `^' indicates cursor pos. where value is returned | |
792 | ;;; simple-word-test | |
793 | ;;; ^ --> nil | |
794 | ;;; ^ --> nil | |
795 | ;;; ^ --> simple-w | |
796 | ;;; ^ --> simple-word-test | |
797 | ;;; _harder_word_test_ | |
798 | ;;; ^ --> harder_word_test | |
799 | ;;; ^ --> harder_word_test_ | |
800 | ;;; ^ --> harder_ | |
801 | ;;; .___.... | |
802 | ;;; --> nil | |
803 | ||
804 | ||
805 | \f | |
806 | ;;;--------------------------------------------------------------------------- | |
807 | ;;; Statistics Recording | |
808 | ;;;--------------------------------------------------------------------------- | |
809 | ||
810 | ;;; Note that the guts of this has been turned off. The guts | |
811 | ;;; are in completion-stats.el. | |
812 | ||
813 | ;;;----------------------------------------------- | |
814 | ;;; Conditionalizing code on *record-cmpl-statistics-p* | |
815 | ;;;----------------------------------------------- | |
816 | ;;; All statistics code outside this block should use this | |
a7a2b1f6 RS |
817 | (defmacro cmpl-statistics-block (&rest body)) |
818 | ;;; "Only executes body if we are recording statistics." | |
819 | ;;; (list 'cond | |
820 | ;;; (list* '*record-cmpl-statistics-p* body) | |
821 | ;;; )) | |
59ca07b5 RS |
822 | |
823 | ;;;----------------------------------------------- | |
824 | ;;; Completion Sources | |
825 | ;;;----------------------------------------------- | |
826 | ||
827 | ;; ID numbers | |
828 | (defconst cmpl-source-unknown 0) | |
829 | (defconst cmpl-source-init-file 1) | |
830 | (defconst cmpl-source-file-parsing 2) | |
831 | (defconst cmpl-source-separator 3) | |
832 | (defconst cmpl-source-cursor-moves 4) | |
833 | (defconst cmpl-source-interactive 5) | |
834 | (defconst cmpl-source-cdabbrev 6) | |
835 | (defconst num-cmpl-sources 7) | |
836 | (defvar current-completion-source cmpl-source-unknown) | |
837 | ||
838 | ||
839 | \f | |
840 | ;;;--------------------------------------------------------------------------- | |
841 | ;;; Completion Method #2: dabbrev-expand style | |
842 | ;;;--------------------------------------------------------------------------- | |
843 | ;;; | |
844 | ;;; This method is used if there are no useful stored completions. It is | |
845 | ;;; based on dabbrev-expand with these differences : | |
846 | ;;; 1) Faster (we don't use regexps) | |
847 | ;;; 2) case coercion handled correctly | |
848 | ;;; This is called cdabbrev to differentiate it. | |
849 | ;;; We simply search backwards through the file looking for words which | |
850 | ;;; start with the same letters we are trying to complete. | |
851 | ;;; | |
852 | ||
853 | (defvar cdabbrev-completions-tried nil) | |
854 | ;;; "A list of all the cdabbrev completions since the last reset.") | |
855 | ||
856 | (defvar cdabbrev-current-point 0) | |
857 | ;;; "The current point position the cdabbrev search is at.") | |
858 | ||
859 | (defvar cdabbrev-current-window nil) | |
860 | ;;; "The current window we are looking for cdabbrevs in. T if looking in | |
861 | ;;; (other-buffer), NIL if no more cdabbrevs.") | |
862 | ||
863 | (defvar cdabbrev-wrapped-p nil) | |
864 | ;;; "T if the cdabbrev search has wrapped around the file.") | |
865 | ||
866 | (defvar cdabbrev-abbrev-string "") | |
867 | (defvar cdabbrev-start-point 0) | |
136f8f67 | 868 | (defvar cdabbrev-stop-point) |
59ca07b5 RS |
869 | |
870 | ;;; Test strings for cdabbrev | |
871 | ;;; cdat-upcase ;;same namestring | |
872 | ;;; CDAT-UPCASE ;;ok | |
873 | ;;; cdat2 ;;too short | |
874 | ;;; cdat-1-2-3-4 ;;ok | |
875 | ;;; a-cdat-1 ;;doesn't start correctly | |
876 | ;;; cdat-simple ;;ok | |
877 | ||
878 | ||
879 | (defun reset-cdabbrev (abbrev-string &optional initial-completions-tried) | |
880 | "Resets the cdabbrev search to search for abbrev-string. | |
a7a2b1f6 | 881 | INITIAL-COMPLETIONS-TRIED is a list of downcased strings to ignore |
59ca07b5 RS |
882 | during the search." |
883 | (setq cdabbrev-abbrev-string abbrev-string | |
884 | cdabbrev-completions-tried | |
885 | (cons (downcase abbrev-string) initial-completions-tried) | |
886 | ) | |
887 | (reset-cdabbrev-window t) | |
888 | ) | |
889 | ||
890 | (defun set-cdabbrev-buffer () | |
891 | ;; cdabbrev-current-window must not be NIL | |
892 | (set-buffer (if (eq cdabbrev-current-window t) | |
893 | (other-buffer) | |
894 | (window-buffer cdabbrev-current-window))) | |
895 | ) | |
896 | ||
897 | ||
898 | (defun reset-cdabbrev-window (&optional initializep) | |
a7a2b1f6 | 899 | "Resets the cdabbrev search to search for abbrev-string." |
59ca07b5 RS |
900 | ;; Set the window |
901 | (cond (initializep | |
902 | (setq cdabbrev-current-window (selected-window)) | |
903 | ) | |
904 | ((eq cdabbrev-current-window t) | |
905 | ;; Everything has failed | |
906 | (setq cdabbrev-current-window nil)) | |
907 | (cdabbrev-current-window | |
908 | (setq cdabbrev-current-window (next-window cdabbrev-current-window)) | |
909 | (if (eq cdabbrev-current-window (selected-window)) | |
910 | ;; No more windows, try other buffer. | |
911 | (setq cdabbrev-current-window t))) | |
912 | ) | |
136f8f67 RS |
913 | (if cdabbrev-current-window |
914 | (save-excursion | |
915 | (set-cdabbrev-buffer) | |
916 | (setq cdabbrev-current-point (point) | |
917 | cdabbrev-start-point cdabbrev-current-point | |
918 | cdabbrev-stop-point | |
919 | (if completion-search-distance | |
920 | (max (point-min) | |
921 | (- cdabbrev-start-point completion-search-distance)) | |
922 | (point-min)) | |
923 | cdabbrev-wrapped-p nil) | |
924 | ))) | |
59ca07b5 RS |
925 | |
926 | (defun next-cdabbrev () | |
927 | "Return the next possible cdabbrev expansion or nil if there isn't one. | |
a7a2b1f6 RS |
928 | `reset-cdabbrev' must've been called already. |
929 | This is sensitive to `case-fold-search'." | |
59ca07b5 RS |
930 | ;; note that case-fold-search affects the behavior of this function |
931 | ;; Bug: won't pick up an expansion that starts at the top of buffer | |
136f8f67 RS |
932 | (if cdabbrev-current-window |
933 | (let (saved-point | |
934 | saved-syntax | |
935 | (expansion nil) | |
936 | downcase-expansion tried-list syntax saved-point-2) | |
937 | (save-excursion | |
938 | (unwind-protect | |
939 | (progn | |
940 | ;; Switch to current completion buffer | |
941 | (set-cdabbrev-buffer) | |
942 | ;; Save current buffer state | |
943 | (setq saved-point (point) | |
944 | saved-syntax (syntax-table)) | |
945 | ;; Restore completion state | |
946 | (set-syntax-table cmpl-syntax-table) | |
947 | (goto-char cdabbrev-current-point) | |
948 | ;; Loop looking for completions | |
949 | (while | |
950 | ;; This code returns t if it should loop again | |
951 | (cond | |
952 | (;; search for the string | |
953 | (search-backward cdabbrev-abbrev-string cdabbrev-stop-point t) | |
954 | ;; return nil if the completion is valid | |
955 | (not | |
956 | (and | |
957 | ;; does it start with a separator char ? | |
958 | (or (= (setq syntax (char-syntax (preceding-char))) ? ) | |
959 | (and (= syntax ?w) | |
960 | ;; symbol char to ignore at end. Are we at end ? | |
961 | (progn | |
962 | (setq saved-point-2 (point)) | |
963 | (forward-word -1) | |
964 | (prog1 | |
965 | (= (char-syntax (preceding-char)) ? ) | |
966 | (goto-char saved-point-2) | |
967 | )))) | |
968 | ;; is the symbol long enough ? | |
969 | (setq expansion (symbol-under-point)) | |
970 | ;; have we not tried this one before | |
971 | (progn | |
972 | ;; See if we've already used it | |
973 | (setq tried-list cdabbrev-completions-tried | |
974 | downcase-expansion (downcase expansion)) | |
975 | (while (and tried-list | |
976 | (not (string-equal downcase-expansion | |
977 | (car tried-list)))) | |
978 | ;; Already tried, don't choose this one | |
979 | (setq tried-list (cdr tried-list)) | |
980 | ) | |
981 | ;; at this point tried-list will be nil if this | |
982 | ;; expansion has not yet been tried | |
983 | (if tried-list | |
984 | (setq expansion nil) | |
985 | t) | |
986 | )))) | |
987 | ;; search failed | |
988 | (cdabbrev-wrapped-p | |
989 | ;; If already wrapped, then we've failed completely | |
990 | nil) | |
991 | (t | |
992 | ;; need to wrap | |
993 | (goto-char (setq cdabbrev-current-point | |
994 | (if completion-search-distance | |
995 | (min (point-max) (+ cdabbrev-start-point completion-search-distance)) | |
996 | (point-max)))) | |
997 | ||
998 | (setq cdabbrev-wrapped-p t)) | |
999 | )) | |
1000 | ;; end of while loop | |
1001 | (cond (expansion | |
1002 | ;; successful | |
1003 | (setq cdabbrev-completions-tried | |
1004 | (cons downcase-expansion cdabbrev-completions-tried) | |
1005 | cdabbrev-current-point (point)))) | |
1006 | ) | |
1007 | (set-syntax-table saved-syntax) | |
1008 | (goto-char saved-point) | |
1009 | )) | |
1010 | ;; If no expansion, go to next window | |
1011 | (cond (expansion) | |
1012 | (t (reset-cdabbrev-window) | |
1013 | (next-cdabbrev)))))) | |
59ca07b5 RS |
1014 | |
1015 | ;;; The following must be eval'd in the minibuffer :: | |
1016 | ;;; (reset-cdabbrev "cdat") | |
1017 | ;;; (next-cdabbrev) --> "cdat-simple" | |
1018 | ;;; (next-cdabbrev) --> "cdat-1-2-3-4" | |
1019 | ;;; (next-cdabbrev) --> "CDAT-UPCASE" | |
1020 | ;;; (next-cdabbrev) --> "cdat-wrapping" | |
1021 | ;;; (next-cdabbrev) --> "cdat_start_sym" | |
1022 | ;;; (next-cdabbrev) --> nil | |
1023 | ;;; (next-cdabbrev) --> nil | |
1024 | ;;; (next-cdabbrev) --> nil | |
1025 | ||
1026 | ;;; _cdat_start_sym | |
1027 | ;;; cdat-wrapping | |
1028 | ||
1029 | \f | |
1030 | ;;;--------------------------------------------------------------------------- | |
1031 | ;;; Completion Database | |
1032 | ;;;--------------------------------------------------------------------------- | |
1033 | ||
1034 | ;;; We use two storage modes for the two search types :: | |
1035 | ;;; 1) Prefix {cmpl-prefix-obarray} for looking up possible completions | |
1036 | ;;; Used by search-completion-next | |
1037 | ;;; the value of the symbol is nil or a cons of head and tail pointers | |
1038 | ;;; 2) Interning {cmpl-obarray} to see if it's in the database | |
1039 | ;;; Used by find-exact-completion, completion-in-database-p | |
1040 | ;;; The value of the symbol is the completion entry | |
1041 | ||
1042 | ;;; bad things may happen if this length is changed due to the way | |
1043 | ;;; GNU implements obarrays | |
1044 | (defconst cmpl-obarray-length 511) | |
1045 | ||
1046 | (defvar cmpl-prefix-obarray (make-vector cmpl-obarray-length 0) | |
eb8c3be9 | 1047 | "An obarray used to store the downcased completion prefixes. |
59ca07b5 RS |
1048 | Each symbol is bound to a list of completion entries.") |
1049 | ||
1050 | (defvar cmpl-obarray (make-vector cmpl-obarray-length 0) | |
1051 | "An obarray used to store the downcased completions. | |
1052 | Each symbol is bound to a single completion entry.") | |
1053 | ||
1054 | ;;;----------------------------------------------- | |
1055 | ;;; Completion Entry Structure Definition | |
1056 | ;;;----------------------------------------------- | |
1057 | ||
1058 | ;;; A completion entry is a LIST of string, prefix-symbol num-uses, and | |
1059 | ;;; last-use-time (the time the completion was last used) | |
1060 | ;;; last-use-time is T if the string should be kept permanently | |
1061 | ;;; num-uses is incremented everytime the completion is used. | |
1062 | ||
1063 | ;;; We chose lists because (car foo) is faster than (aref foo 0) and the | |
1064 | ;;; creation time is about the same. | |
1065 | ||
1066 | ;;; READER MACROS | |
1067 | ||
1068 | (defmacro completion-string (completion-entry) | |
1069 | (list 'car completion-entry)) | |
1070 | ||
1071 | (defmacro completion-num-uses (completion-entry) | |
1072 | ;; "The number of times it has used. Used to decide whether to save | |
1073 | ;; it." | |
1074 | (list 'car (list 'cdr completion-entry))) | |
1075 | ||
1076 | (defmacro completion-last-use-time (completion-entry) | |
a7a2b1f6 | 1077 | ;; "The time it was last used. In hours since origin. Used to decide |
59ca07b5 RS |
1078 | ;; whether to save it. T if one should always save it." |
1079 | (list 'nth 2 completion-entry)) | |
1080 | ||
1081 | (defmacro completion-source (completion-entry) | |
1082 | (list 'nth 3 completion-entry)) | |
1083 | ||
1084 | ;;; WRITER MACROS | |
1085 | (defmacro set-completion-string (completion-entry string) | |
1086 | (list 'setcar completion-entry string)) | |
1087 | ||
1088 | (defmacro set-completion-num-uses (completion-entry num-uses) | |
1089 | (list 'setcar (list 'cdr completion-entry) num-uses)) | |
1090 | ||
1091 | (defmacro set-completion-last-use-time (completion-entry last-use-time) | |
1092 | (list 'setcar (list 'cdr (list 'cdr completion-entry)) last-use-time)) | |
1093 | ||
1094 | ;;; CONSTRUCTOR | |
1095 | (defun make-completion (string) | |
1096 | "Returns a list of a completion entry." | |
1097 | (list (list string 0 nil current-completion-source))) | |
1098 | ||
1099 | ;; Obsolete | |
1100 | ;;(defmacro cmpl-prefix-entry-symbol (completion-entry) | |
1101 | ;; (list 'car (list 'cdr completion-entry))) | |
1102 | ||
1103 | ||
1104 | \f | |
1105 | ;;;----------------------------------------------- | |
1106 | ;;; Prefix symbol entry definition | |
1107 | ;;;----------------------------------------------- | |
1108 | ;;; A cons of (head . tail) | |
1109 | ||
1110 | ;;; READER Macros | |
1111 | ||
1112 | (defmacro cmpl-prefix-entry-head (prefix-entry) | |
1113 | (list 'car prefix-entry)) | |
1114 | ||
1115 | (defmacro cmpl-prefix-entry-tail (prefix-entry) | |
1116 | (list 'cdr prefix-entry)) | |
1117 | ||
1118 | ;;; WRITER Macros | |
1119 | ||
1120 | (defmacro set-cmpl-prefix-entry-head (prefix-entry new-head) | |
1121 | (list 'setcar prefix-entry new-head)) | |
1122 | ||
1123 | (defmacro set-cmpl-prefix-entry-tail (prefix-entry new-tail) | |
1124 | (list 'setcdr prefix-entry new-tail)) | |
1125 | ||
eb8c3be9 | 1126 | ;;; Constructor |
59ca07b5 RS |
1127 | |
1128 | (defun make-cmpl-prefix-entry (completion-entry-list) | |
1129 | "Makes a new prefix entry containing only completion-entry." | |
1130 | (cons completion-entry-list completion-entry-list)) | |
1131 | ||
1132 | ;;;----------------------------------------------- | |
1133 | ;;; Completion Database - Utilities | |
1134 | ;;;----------------------------------------------- | |
1135 | ||
1136 | (defun clear-all-completions () | |
1137 | "Initializes the completion storage. All existing completions are lost." | |
1138 | (interactive) | |
1139 | (setq cmpl-prefix-obarray (make-vector cmpl-obarray-length 0)) | |
1140 | (setq cmpl-obarray (make-vector cmpl-obarray-length 0)) | |
1141 | (cmpl-statistics-block | |
1142 | (record-clear-all-completions)) | |
1143 | ) | |
1144 | ||
136f8f67 RS |
1145 | (defvar completions-list-return-value) |
1146 | ||
59ca07b5 RS |
1147 | (defun list-all-completions () |
1148 | "Returns a list of all the known completion entries." | |
136f8f67 | 1149 | (let ((completions-list-return-value nil)) |
59ca07b5 | 1150 | (mapatoms 'list-all-completions-1 cmpl-prefix-obarray) |
136f8f67 | 1151 | completions-list-return-value)) |
59ca07b5 RS |
1152 | |
1153 | (defun list-all-completions-1 (prefix-symbol) | |
1154 | (if (boundp prefix-symbol) | |
136f8f67 | 1155 | (setq completions-list-return-value |
59ca07b5 | 1156 | (append (cmpl-prefix-entry-head (symbol-value prefix-symbol)) |
136f8f67 | 1157 | completions-list-return-value)))) |
59ca07b5 RS |
1158 | |
1159 | (defun list-all-completions-by-hash-bucket () | |
a7a2b1f6 | 1160 | "Return list of lists of known completion entries, organized by hash bucket." |
136f8f67 | 1161 | (let ((completions-list-return-value nil)) |
59ca07b5 | 1162 | (mapatoms 'list-all-completions-by-hash-bucket-1 cmpl-prefix-obarray) |
136f8f67 | 1163 | completions-list-return-value)) |
59ca07b5 RS |
1164 | |
1165 | (defun list-all-completions-by-hash-bucket-1 (prefix-symbol) | |
1166 | (if (boundp prefix-symbol) | |
136f8f67 | 1167 | (setq completions-list-return-value |
59ca07b5 | 1168 | (cons (cmpl-prefix-entry-head (symbol-value prefix-symbol)) |
136f8f67 | 1169 | completions-list-return-value)))) |
59ca07b5 RS |
1170 | |
1171 | \f | |
1172 | ;;;----------------------------------------------- | |
1173 | ;;; Updating the database | |
1174 | ;;;----------------------------------------------- | |
1175 | ;;; | |
1176 | ;;; These are the internal functions used to update the datebase | |
1177 | ;;; | |
1178 | ;;; | |
1179 | (defvar completion-to-accept nil) | |
1180 | ;;"Set to a string that is pending its acceptance." | |
1181 | ;; this checked by the top level reading functions | |
1182 | ||
1183 | (defvar cmpl-db-downcase-string nil) | |
1184 | ;; "Setup by find-exact-completion, etc. The given string, downcased." | |
1185 | (defvar cmpl-db-symbol nil) | |
1186 | ;; "The interned symbol corresponding to cmpl-db-downcase-string. | |
1187 | ;; Set up by cmpl-db-symbol." | |
1188 | (defvar cmpl-db-prefix-symbol nil) | |
1189 | ;; "The interned prefix symbol corresponding to cmpl-db-downcase-string." | |
1190 | (defvar cmpl-db-entry nil) | |
1191 | (defvar cmpl-db-debug-p nil | |
1192 | "Set to T if you want to debug the database.") | |
1193 | ||
1194 | ;;; READS | |
1195 | (defun find-exact-completion (string) | |
1196 | "Returns the completion entry for string or nil. | |
a7a2b1f6 | 1197 | Sets up `cmpl-db-downcase-string' and `cmpl-db-symbol'." |
59ca07b5 RS |
1198 | (and (boundp (setq cmpl-db-symbol |
1199 | (intern (setq cmpl-db-downcase-string (downcase string)) | |
1200 | cmpl-obarray))) | |
1201 | (symbol-value cmpl-db-symbol) | |
1202 | )) | |
1203 | ||
1204 | (defun find-cmpl-prefix-entry (prefix-string) | |
c2ced5d8 | 1205 | "Returns the prefix entry for string. |
a7a2b1f6 RS |
1206 | Sets `cmpl-db-prefix-symbol'. |
1207 | Prefix-string must be exactly `completion-prefix-min-length' long | |
1208 | and downcased. Sets up `cmpl-db-prefix-symbol'." | |
59ca07b5 RS |
1209 | (and (boundp (setq cmpl-db-prefix-symbol |
1210 | (intern prefix-string cmpl-prefix-obarray))) | |
1211 | (symbol-value cmpl-db-prefix-symbol))) | |
1212 | ||
1213 | (defvar inside-locate-completion-entry nil) | |
1214 | ;; used to trap lossage in silent error correction | |
1215 | ||
1216 | (defun locate-completion-entry (completion-entry prefix-entry) | |
c2ced5d8 CZ |
1217 | "Locates the completion entry. |
1218 | Returns a pointer to the element before the completion entry or nil if | |
1219 | the completion entry is at the head. | |
a7a2b1f6 | 1220 | Must be called after `find-exact-completion'." |
59ca07b5 RS |
1221 | (let ((prefix-list (cmpl-prefix-entry-head prefix-entry)) |
1222 | next-prefix-list | |
1223 | ) | |
1224 | (cond | |
1225 | ((not (eq (car prefix-list) completion-entry)) | |
1226 | ;; not already at head | |
1227 | (while (and prefix-list | |
1228 | (not (eq completion-entry | |
1229 | (car (setq next-prefix-list (cdr prefix-list))) | |
1230 | ))) | |
1231 | (setq prefix-list next-prefix-list)) | |
1232 | (cond (;; found | |
1233 | prefix-list) | |
1234 | ;; Didn't find it. Database is messed up. | |
1235 | (cmpl-db-debug-p | |
1236 | ;; not found, error if debug mode | |
1237 | (error "Completion entry exists but not on prefix list - %s" | |
136f8f67 | 1238 | completion-string)) |
59ca07b5 RS |
1239 | (inside-locate-completion-entry |
1240 | ;; recursive error: really scrod | |
1241 | (locate-completion-db-error)) | |
1242 | (t | |
1243 | ;; Patch out | |
1244 | (set cmpl-db-symbol nil) | |
1245 | ;; Retry | |
1246 | (locate-completion-entry-retry completion-entry) | |
1247 | )))))) | |
1248 | ||
1249 | (defun locate-completion-entry-retry (old-entry) | |
1250 | (let ((inside-locate-completion-entry t)) | |
1251 | (add-completion (completion-string old-entry) | |
1252 | (completion-num-uses old-entry) | |
1253 | (completion-last-use-time old-entry)) | |
136f8f67 RS |
1254 | (let* ((cmpl-entry (find-exact-completion (completion-string old-entry))) |
1255 | (pref-entry | |
1256 | (if cmpl-entry | |
1257 | (find-cmpl-prefix-entry | |
1258 | (substring cmpl-db-downcase-string | |
1259 | 0 completion-prefix-min-length)))) | |
59ca07b5 RS |
1260 | ) |
1261 | (if (and cmpl-entry pref-entry) | |
1262 | ;; try again | |
1263 | (locate-completion-entry cmpl-entry pref-entry) | |
1264 | ;; still losing | |
1265 | (locate-completion-db-error)) | |
1266 | ))) | |
1267 | ||
1268 | (defun locate-completion-db-error () | |
1269 | ;; recursive error: really scrod | |
1270 | (error "Completion database corrupted. Try M-x clear-all-completions. Send bug report.") | |
1271 | ) | |
1272 | ||
1273 | ;;; WRITES | |
1274 | (defun add-completion-to-tail-if-new (string) | |
c2ced5d8 | 1275 | "If STRING is not in the database add it to appropriate prefix list. |
eb8c3be9 | 1276 | STRING is added to the end of the appropriate prefix list with |
c2ced5d8 | 1277 | num-uses = 0. The database is unchanged if it is there. STRING must be |
a7a2b1f6 | 1278 | longer than `completion-prefix-min-length'. |
59ca07b5 RS |
1279 | This must be very fast. |
1280 | Returns the completion entry." | |
1281 | (or (find-exact-completion string) | |
1282 | ;; not there | |
1283 | (let (;; create an entry | |
1284 | (entry (make-completion string)) | |
1285 | ;; setup the prefix | |
1286 | (prefix-entry (find-cmpl-prefix-entry | |
1287 | (substring cmpl-db-downcase-string 0 | |
a7a2b1f6 RS |
1288 | (cmpl-read-time-eval |
1289 | completion-prefix-min-length)))) | |
59ca07b5 RS |
1290 | ) |
1291 | ;; The next two forms should happen as a unit (atomically) but | |
1292 | ;; no fatal errors should result if that is not the case. | |
1293 | (cond (prefix-entry | |
1294 | ;; These two should be atomic, but nothing fatal will happen | |
1295 | ;; if they're not. | |
1296 | (setcdr (cmpl-prefix-entry-tail prefix-entry) entry) | |
1297 | (set-cmpl-prefix-entry-tail prefix-entry entry)) | |
1298 | (t | |
1299 | (set cmpl-db-prefix-symbol (make-cmpl-prefix-entry entry)) | |
1300 | )) | |
1301 | ;; statistics | |
1302 | (cmpl-statistics-block | |
1303 | (note-added-completion)) | |
1304 | ;; set symbol | |
1305 | (set cmpl-db-symbol (car entry)) | |
1306 | ))) | |
1307 | ||
136f8f67 RS |
1308 | (defun add-completion-to-head (completion-string) |
1309 | "If COMPLETION-STRING is not in the database, add it to prefix list. | |
1310 | We add COMPLETION-STRING to the head of the appropriate prefix list, | |
1311 | or it to the head of the list. | |
1312 | COMPLETION-STRING must be longer than `completion-prefix-min-length'. | |
59ca07b5 RS |
1313 | Updates the saved string with the supplied string. |
1314 | This must be very fast. | |
1315 | Returns the completion entry." | |
1316 | ;; Handle pending acceptance | |
1317 | (if completion-to-accept (accept-completion)) | |
1318 | ;; test if already in database | |
136f8f67 | 1319 | (if (setq cmpl-db-entry (find-exact-completion completion-string)) |
59ca07b5 RS |
1320 | ;; found |
1321 | (let* ((prefix-entry (find-cmpl-prefix-entry | |
1322 | (substring cmpl-db-downcase-string 0 | |
a7a2b1f6 RS |
1323 | (cmpl-read-time-eval |
1324 | completion-prefix-min-length)))) | |
59ca07b5 RS |
1325 | (splice-ptr (locate-completion-entry cmpl-db-entry prefix-entry)) |
1326 | (cmpl-ptr (cdr splice-ptr)) | |
1327 | ) | |
1328 | ;; update entry | |
136f8f67 | 1329 | (set-completion-string cmpl-db-entry completion-string) |
59ca07b5 RS |
1330 | ;; move to head (if necessary) |
1331 | (cond (splice-ptr | |
1332 | ;; These should all execute atomically but it is not fatal if | |
1333 | ;; they don't. | |
1334 | ;; splice it out | |
1335 | (or (setcdr splice-ptr (cdr cmpl-ptr)) | |
1336 | ;; fix up tail if necessary | |
1337 | (set-cmpl-prefix-entry-tail prefix-entry splice-ptr)) | |
1338 | ;; splice in at head | |
1339 | (setcdr cmpl-ptr (cmpl-prefix-entry-head prefix-entry)) | |
1340 | (set-cmpl-prefix-entry-head prefix-entry cmpl-ptr) | |
1341 | )) | |
1342 | cmpl-db-entry) | |
1343 | ;; not there | |
1344 | (let (;; create an entry | |
136f8f67 | 1345 | (entry (make-completion completion-string)) |
59ca07b5 RS |
1346 | ;; setup the prefix |
1347 | (prefix-entry (find-cmpl-prefix-entry | |
1348 | (substring cmpl-db-downcase-string 0 | |
a7a2b1f6 RS |
1349 | (cmpl-read-time-eval |
1350 | completion-prefix-min-length)))) | |
59ca07b5 RS |
1351 | ) |
1352 | (cond (prefix-entry | |
1353 | ;; Splice in at head | |
1354 | (setcdr entry (cmpl-prefix-entry-head prefix-entry)) | |
1355 | (set-cmpl-prefix-entry-head prefix-entry entry)) | |
1356 | (t | |
1357 | ;; Start new prefix entry | |
1358 | (set cmpl-db-prefix-symbol (make-cmpl-prefix-entry entry)) | |
1359 | )) | |
1360 | ;; statistics | |
1361 | (cmpl-statistics-block | |
1362 | (note-added-completion)) | |
1363 | ;; Add it to the symbol | |
1364 | (set cmpl-db-symbol (car entry)) | |
1365 | ))) | |
1366 | ||
136f8f67 | 1367 | (defun delete-completion (completion-string) |
c2ced5d8 | 1368 | "Deletes the completion from the database. |
a7a2b1f6 | 1369 | String must be longer than `completion-prefix-min-length'." |
59ca07b5 RS |
1370 | ;; Handle pending acceptance |
1371 | (if completion-to-accept (accept-completion)) | |
136f8f67 | 1372 | (if (setq cmpl-db-entry (find-exact-completion completion-string)) |
59ca07b5 RS |
1373 | ;; found |
1374 | (let* ((prefix-entry (find-cmpl-prefix-entry | |
1375 | (substring cmpl-db-downcase-string 0 | |
a7a2b1f6 RS |
1376 | (cmpl-read-time-eval |
1377 | completion-prefix-min-length)))) | |
59ca07b5 RS |
1378 | (splice-ptr (locate-completion-entry cmpl-db-entry prefix-entry)) |
1379 | ) | |
1380 | ;; delete symbol reference | |
1381 | (set cmpl-db-symbol nil) | |
1382 | ;; remove from prefix list | |
1383 | (cond (splice-ptr | |
1384 | ;; not at head | |
1385 | (or (setcdr splice-ptr (cdr (cdr splice-ptr))) | |
1386 | ;; fix up tail if necessary | |
1387 | (set-cmpl-prefix-entry-tail prefix-entry splice-ptr)) | |
1388 | ) | |
1389 | (t | |
1390 | ;; at head | |
1391 | (or (set-cmpl-prefix-entry-head | |
1392 | prefix-entry (cdr (cmpl-prefix-entry-head prefix-entry))) | |
1393 | ;; List is now empty | |
1394 | (set cmpl-db-prefix-symbol nil)) | |
1395 | )) | |
1396 | (cmpl-statistics-block | |
1397 | (note-completion-deleted)) | |
1398 | ) | |
136f8f67 | 1399 | (error "Unknown completion `%s'" completion-string) |
59ca07b5 RS |
1400 | )) |
1401 | ||
1402 | ;;; Tests -- | |
1403 | ;;; - Add and Find - | |
1404 | ;;; (add-completion-to-head "banana") --> ("banana" 0 nil 0) | |
1405 | ;;; (find-exact-completion "banana") --> ("banana" 0 nil 0) | |
1406 | ;;; (find-exact-completion "bana") --> nil | |
1407 | ;;; (car (find-cmpl-prefix-entry "ban")) --> (("banana" ...)) | |
1408 | ;;; (cdr (find-cmpl-prefix-entry "ban")) --> (("banana" ...)) | |
1409 | ;;; (add-completion-to-head "banish") --> ("banish" 0 nil 0) | |
1410 | ;;; (find-exact-completion "banish") --> ("banish" 0 nil 0) | |
1411 | ;;; (car (find-cmpl-prefix-entry "ban")) --> (("banish" ...) ("banana" ...)) | |
1412 | ;;; (cdr (find-cmpl-prefix-entry "ban")) --> (("banana" ...)) | |
1413 | ;;; (add-completion-to-head "banana") --> ("banana" 0 nil 0) | |
1414 | ;;; (car (find-cmpl-prefix-entry "ban")) --> (("banana" ...) ("banish" ...)) | |
1415 | ;;; (cdr (find-cmpl-prefix-entry "ban")) --> (("banish" ...)) | |
1416 | ;;; | |
1417 | ;;; - Deleting - | |
1418 | ;;; (add-completion-to-head "banner") --> ("banner" 0 nil 0) | |
1419 | ;;; (delete-completion "banner") | |
1420 | ;;; (find-exact-completion "banner") --> nil | |
1421 | ;;; (car (find-cmpl-prefix-entry "ban")) --> (("banana" ...) ("banish" ...)) | |
1422 | ;;; (cdr (find-cmpl-prefix-entry "ban")) --> (("banish" ...)) | |
1423 | ;;; (add-completion-to-head "banner") --> ("banner" 0 nil 0) | |
1424 | ;;; (delete-completion "banana") | |
1425 | ;;; (car (find-cmpl-prefix-entry "ban")) --> (("banner" ...) ("banish" ...)) | |
1426 | ;;; (cdr (find-cmpl-prefix-entry "ban")) --> (("banish" ...)) | |
1427 | ;;; (delete-completion "banner") | |
1428 | ;;; (delete-completion "banish") | |
1429 | ;;; (find-cmpl-prefix-entry "ban") --> nil | |
1430 | ;;; (delete-completion "banner") --> error | |
1431 | ;;; | |
1432 | ;;; - Tail - | |
1433 | ;;; (add-completion-to-tail-if-new "banana") --> ("banana" 0 nil 0) | |
1434 | ;;; (car (find-cmpl-prefix-entry "ban")) --> (("banana" ...)) | |
1435 | ;;; (cdr (find-cmpl-prefix-entry "ban")) --> (("banana" ...)) | |
1436 | ;;; (add-completion-to-tail-if-new "banish") --> ("banish" 0 nil 0) | |
1437 | ;;; (car (find-cmpl-prefix-entry "ban")) -->(("banana" ...) ("banish" ...)) | |
1438 | ;;; (cdr (find-cmpl-prefix-entry "ban")) -->(("banish" ...)) | |
1439 | ;;; | |
1440 | ||
1441 | \f | |
1442 | ;;;--------------------------------------------------------------------------- | |
1443 | ;;; Database Update :: Interface level routines | |
1444 | ;;;--------------------------------------------------------------------------- | |
1445 | ;;; | |
1446 | ;;; These lie on top of the database ref. functions but below the standard | |
1447 | ;;; user interface level | |
1448 | ||
1449 | ||
1450 | (defun interactive-completion-string-reader (prompt) | |
1451 | (let* ((default (symbol-under-or-before-point)) | |
1452 | (new-prompt | |
1453 | (if default | |
1454 | (format "%s: (default: %s) " prompt default) | |
1455 | (format "%s: " prompt)) | |
1456 | ) | |
1457 | (read (completing-read new-prompt cmpl-obarray)) | |
1458 | ) | |
1459 | (if (zerop (length read)) (setq read (or default ""))) | |
1460 | (list read) | |
1461 | )) | |
1462 | ||
1463 | (defun check-completion-length (string) | |
a7a2b1f6 | 1464 | (if (< (length string) completion-min-length) |
136f8f67 | 1465 | (error "The string `%s' is too short to be saved as a completion" |
59ca07b5 RS |
1466 | string) |
1467 | (list string))) | |
1468 | ||
1469 | (defun add-completion (string &optional num-uses last-use-time) | |
a7a2b1f6 | 1470 | "Add STRING to completion list, or move it to head of list. |
59ca07b5 RS |
1471 | The completion is altered appropriately if num-uses and/or last-use-time is |
1472 | specified." | |
1473 | (interactive (interactive-completion-string-reader "Completion to add")) | |
1474 | (check-completion-length string) | |
1475 | (let* ((current-completion-source (if (interactive-p) | |
1476 | cmpl-source-interactive | |
1477 | current-completion-source)) | |
1478 | (entry (add-completion-to-head string))) | |
1479 | ||
1480 | (if num-uses (set-completion-num-uses entry num-uses)) | |
1481 | (if last-use-time | |
1482 | (set-completion-last-use-time entry last-use-time)) | |
1483 | )) | |
1484 | ||
1485 | (defun add-permanent-completion (string) | |
a7a2b1f6 | 1486 | "Add STRING if it isn't already listed, and mark it permanent." |
59ca07b5 RS |
1487 | (interactive |
1488 | (interactive-completion-string-reader "Completion to add permanently")) | |
1489 | (let ((current-completion-source (if (interactive-p) | |
1490 | cmpl-source-interactive | |
1491 | current-completion-source)) | |
1492 | ) | |
1493 | (add-completion string nil t) | |
1494 | )) | |
1495 | ||
1496 | (defun kill-completion (string) | |
1497 | (interactive (interactive-completion-string-reader "Completion to kill")) | |
1498 | (check-completion-length string) | |
1499 | (delete-completion string) | |
1500 | ) | |
1501 | ||
1502 | (defun accept-completion () | |
a7a2b1f6 RS |
1503 | "Accepts the pending completion in `completion-to-accept'. |
1504 | This bumps num-uses. Called by `add-completion-to-head' and | |
1505 | `completion-search-reset'." | |
59ca07b5 RS |
1506 | (let ((string completion-to-accept) |
1507 | ;; if this is added afresh here, then it must be a cdabbrev | |
1508 | (current-completion-source cmpl-source-cdabbrev) | |
1509 | entry | |
1510 | ) | |
1511 | (setq completion-to-accept nil) | |
1512 | (setq entry (add-completion-to-head string)) | |
1513 | (set-completion-num-uses entry (1+ (completion-num-uses entry))) | |
1514 | (setq cmpl-completions-accepted-p t) | |
1515 | )) | |
1516 | ||
1517 | (defun use-completion-under-point () | |
a7a2b1f6 RS |
1518 | "Add the completion symbol underneath the point into the completion buffer." |
1519 | (let ((string (and enable-completion (symbol-under-point))) | |
59ca07b5 RS |
1520 | (current-completion-source cmpl-source-cursor-moves)) |
1521 | (if string (add-completion-to-head string)))) | |
1522 | ||
1523 | (defun use-completion-before-point () | |
a7a2b1f6 RS |
1524 | "Add the completion symbol before point into the completion buffer." |
1525 | (let ((string (and enable-completion (symbol-before-point))) | |
59ca07b5 RS |
1526 | (current-completion-source cmpl-source-cursor-moves)) |
1527 | (if string (add-completion-to-head string)))) | |
1528 | ||
1529 | (defun use-completion-under-or-before-point () | |
a7a2b1f6 RS |
1530 | "Add the completion symbol before point into the completion buffer." |
1531 | (let ((string (and enable-completion (symbol-under-or-before-point))) | |
59ca07b5 RS |
1532 | (current-completion-source cmpl-source-cursor-moves)) |
1533 | (if string (add-completion-to-head string)))) | |
1534 | ||
1535 | (defun use-completion-before-separator () | |
a7a2b1f6 | 1536 | "Add the completion symbol before point into the completion buffer. |
c2ced5d8 | 1537 | Completions added this way will automatically be saved if |
a7a2b1f6 RS |
1538 | `completion-on-separator-character' is non-nil." |
1539 | (let ((string (and enable-completion (symbol-before-point))) | |
59ca07b5 RS |
1540 | (current-completion-source cmpl-source-separator) |
1541 | entry) | |
1542 | (cmpl-statistics-block | |
1543 | (note-separator-character string) | |
1544 | ) | |
1545 | (cond (string | |
1546 | (setq entry (add-completion-to-head string)) | |
136f8f67 | 1547 | (if (and completion-on-separator-character |
59ca07b5 | 1548 | (zerop (completion-num-uses entry))) |
136f8f67 RS |
1549 | (progn |
1550 | (set-completion-num-uses entry 1) | |
1551 | (setq cmpl-completions-accepted-p t))))) | |
59ca07b5 RS |
1552 | )) |
1553 | ||
1554 | ;;; Tests -- | |
1555 | ;;; - Add and Find - | |
1556 | ;;; (add-completion "banana" 5 10) | |
1557 | ;;; (find-exact-completion "banana") --> ("banana" 5 10 0) | |
1558 | ;;; (add-completion "banana" 6) | |
1559 | ;;; (find-exact-completion "banana") --> ("banana" 6 10 0) | |
1560 | ;;; (add-completion "banish") | |
1561 | ;;; (car (find-cmpl-prefix-entry "ban")) --> (("banish" ...) ("banana" ...)) | |
1562 | ;;; | |
1563 | ;;; - Accepting - | |
1564 | ;;; (setq completion-to-accept "banana") | |
1565 | ;;; (accept-completion) | |
1566 | ;;; (find-exact-completion "banana") --> ("banana" 7 10) | |
1567 | ;;; (car (find-cmpl-prefix-entry "ban")) --> (("banana" ...) ("banish" ...)) | |
1568 | ;;; (setq completion-to-accept "banish") | |
1569 | ;;; (add-completion "banner") | |
1570 | ;;; (car (find-cmpl-prefix-entry "ban")) | |
1571 | ;;; --> (("banner" ...) ("banish" 1 ...) ("banana" 7 ...)) | |
1572 | ;;; | |
1573 | ;;; - Deleting - | |
1574 | ;;; (kill-completion "banish") | |
1575 | ;;; (car (find-cmpl-prefix-entry "ban")) --> (("banner" ...) ("banana" ...)) | |
1576 | ||
1577 | \f | |
1578 | ;;;--------------------------------------------------------------------------- | |
1579 | ;;; Searching the database | |
1580 | ;;;--------------------------------------------------------------------------- | |
1581 | ;;; Functions outside this block must call completion-search-reset followed | |
1582 | ;;; by calls to completion-search-next or completion-search-peek | |
1583 | ;;; | |
1584 | ||
1585 | ;;; Status variables | |
1586 | ;; Commented out to improve loading speed | |
1587 | (defvar cmpl-test-string "") | |
1588 | ;; "The current string used by completion-search-next." | |
1589 | (defvar cmpl-test-regexp "") | |
1590 | ;; "The current regexp used by completion-search-next. | |
1591 | ;; (derived from cmpl-test-string)" | |
1592 | (defvar cmpl-last-index 0) | |
1593 | ;; "The last index that completion-search-next was called with." | |
1594 | (defvar cmpl-cdabbrev-reset-p nil) | |
1595 | ;; "Set to t when cdabbrevs have been reset." | |
1596 | (defvar cmpl-next-possibilities nil) | |
1597 | ;; "A pointer to the element BEFORE the next set of possible completions. | |
1598 | ;; cadr of this is the cmpl-next-possibility" | |
1599 | (defvar cmpl-starting-possibilities nil) | |
1600 | ;; "The initial list of starting possibilities." | |
1601 | (defvar cmpl-next-possibility nil) | |
1602 | ;; "The cached next possibility." | |
1603 | (defvar cmpl-tried-list nil) | |
1604 | ;; "A downcased list of all the completions we have tried." | |
1605 | ||
1606 | ||
1607 | (defun completion-search-reset (string) | |
a7a2b1f6 RS |
1608 | "Set up the for completion searching for STRING. |
1609 | STRING must be longer than `completion-prefix-min-length'." | |
59ca07b5 RS |
1610 | (if completion-to-accept (accept-completion)) |
1611 | (setq cmpl-starting-possibilities | |
1612 | (cmpl-prefix-entry-head | |
46f950ca RS |
1613 | (find-cmpl-prefix-entry |
1614 | (downcase (substring string 0 completion-prefix-min-length)))) | |
59ca07b5 RS |
1615 | cmpl-test-string string |
1616 | cmpl-test-regexp (concat (regexp-quote string) ".")) | |
1617 | (completion-search-reset-1) | |
1618 | ) | |
1619 | ||
1620 | (defun completion-search-reset-1 () | |
1621 | (setq cmpl-next-possibilities cmpl-starting-possibilities | |
1622 | cmpl-next-possibility nil | |
1623 | cmpl-cdabbrev-reset-p nil | |
1624 | cmpl-last-index -1 | |
1625 | cmpl-tried-list nil | |
1626 | )) | |
1627 | ||
1628 | (defun completion-search-next (index) | |
a7a2b1f6 RS |
1629 | "Return the next completion entry. |
1630 | If INDEX is out of sequence, reset and start from the top. | |
1631 | If there are no more entries, try cdabbrev and returns only a string." | |
59ca07b5 RS |
1632 | (cond |
1633 | ((= index (setq cmpl-last-index (1+ cmpl-last-index))) | |
1634 | (completion-search-peek t)) | |
136f8f67 | 1635 | ((< index 0) |
59ca07b5 RS |
1636 | (completion-search-reset-1) |
1637 | (setq cmpl-last-index index) | |
1638 | ;; reverse the possibilities list | |
1639 | (setq cmpl-next-possibilities (reverse cmpl-starting-possibilities)) | |
1640 | ;; do a "normal" search | |
1641 | (while (and (completion-search-peek nil) | |
136f8f67 | 1642 | (< (setq index (1+ index)) 0)) |
59ca07b5 RS |
1643 | (setq cmpl-next-possibility nil) |
1644 | ) | |
1645 | (cond ((not cmpl-next-possibilities)) | |
1646 | ;; If no more possibilities, leave it that way | |
1647 | ((= -1 cmpl-last-index) | |
1648 | ;; next completion is at index 0. reset next-possibility list | |
1649 | ;; to start at beginning | |
1650 | (setq cmpl-next-possibilities cmpl-starting-possibilities)) | |
1651 | (t | |
1652 | ;; otherwise point to one before current | |
1653 | (setq cmpl-next-possibilities | |
1654 | (nthcdr (- (length cmpl-starting-possibilities) | |
1655 | (length cmpl-next-possibilities)) | |
1656 | cmpl-starting-possibilities)) | |
1657 | ))) | |
1658 | (t | |
1659 | ;; non-negative index, reset and search | |
1660 | ;;(prin1 'reset) | |
1661 | (completion-search-reset-1) | |
1662 | (setq cmpl-last-index index) | |
1663 | (while (and (completion-search-peek t) | |
136f8f67 | 1664 | (not (< (setq index (1- index)) 0))) |
59ca07b5 RS |
1665 | (setq cmpl-next-possibility nil) |
1666 | )) | |
1667 | ) | |
1668 | (prog1 | |
1669 | cmpl-next-possibility | |
1670 | (setq cmpl-next-possibility nil) | |
1671 | )) | |
1672 | ||
1673 | ||
1674 | (defun completion-search-peek (use-cdabbrev) | |
1675 | "Returns the next completion entry without actually moving the pointers. | |
a7a2b1f6 RS |
1676 | Calling this again or calling `completion-search-next' results in the same |
1677 | string being returned. Depends on `case-fold-search'. | |
1678 | If there are no more entries, try cdabbrev and then return only a string." | |
59ca07b5 RS |
1679 | (cond |
1680 | ;; return the cached value if we have it | |
1681 | (cmpl-next-possibility) | |
1682 | ((and cmpl-next-possibilities | |
1683 | ;; still a few possibilities left | |
1684 | (progn | |
1685 | (while | |
1686 | (and (not (eq 0 (string-match cmpl-test-regexp | |
1687 | (completion-string (car cmpl-next-possibilities))))) | |
1688 | (setq cmpl-next-possibilities (cdr cmpl-next-possibilities)) | |
1689 | )) | |
1690 | cmpl-next-possibilities | |
1691 | )) | |
1692 | ;; successful match | |
1693 | (setq cmpl-next-possibility (car cmpl-next-possibilities) | |
1694 | cmpl-tried-list (cons (downcase (completion-string cmpl-next-possibility)) | |
1695 | cmpl-tried-list) | |
1696 | cmpl-next-possibilities (cdr cmpl-next-possibilities) | |
1697 | ) | |
1698 | cmpl-next-possibility) | |
1699 | (use-cdabbrev | |
1700 | ;; unsuccessful, use cdabbrev | |
1701 | (cond ((not cmpl-cdabbrev-reset-p) | |
1702 | (reset-cdabbrev cmpl-test-string cmpl-tried-list) | |
1703 | (setq cmpl-cdabbrev-reset-p t) | |
1704 | )) | |
1705 | (setq cmpl-next-possibility (next-cdabbrev)) | |
1706 | ) | |
1707 | ;; Completely unsuccessful, return nil | |
1708 | )) | |
1709 | ||
1710 | ;;; Tests -- | |
1711 | ;;; - Add and Find - | |
1712 | ;;; (add-completion "banana") | |
1713 | ;;; (completion-search-reset "ban") | |
1714 | ;;; (completion-search-next 0) --> "banana" | |
1715 | ;;; | |
1716 | ;;; - Discrimination - | |
1717 | ;;; (add-completion "cumberland") | |
1718 | ;;; (add-completion "cumberbund") | |
1719 | ;;; cumbering | |
1720 | ;;; (completion-search-reset "cumb") | |
1721 | ;;; (completion-search-peek t) --> "cumberbund" | |
1722 | ;;; (completion-search-next 0) --> "cumberbund" | |
1723 | ;;; (completion-search-peek t) --> "cumberland" | |
1724 | ;;; (completion-search-next 1) --> "cumberland" | |
1725 | ;;; (completion-search-peek nil) --> nil | |
1726 | ;;; (completion-search-next 2) --> "cumbering" {cdabbrev} | |
1727 | ;;; (completion-search-next 3) --> nil or "cumming"{depends on context} | |
1728 | ;;; (completion-search-next 1) --> "cumberland" | |
1729 | ;;; (completion-search-peek t) --> "cumbering" {cdabbrev} | |
1730 | ;;; | |
1731 | ;;; - Accepting - | |
1732 | ;;; (completion-search-next 1) --> "cumberland" | |
1733 | ;;; (setq completion-to-accept "cumberland") | |
1734 | ;;; (completion-search-reset "foo") | |
1735 | ;;; (completion-search-reset "cum") | |
1736 | ;;; (completion-search-next 0) --> "cumberland" | |
1737 | ;;; | |
1738 | ;;; - Deleting - | |
1739 | ;;; (kill-completion "cumberland") | |
1740 | ;;; cummings | |
1741 | ;;; (completion-search-reset "cum") | |
1742 | ;;; (completion-search-next 0) --> "cumberbund" | |
1743 | ;;; (completion-search-next 1) --> "cummings" | |
1744 | ;;; | |
1745 | ;;; - Ignoring Capitalization - | |
1746 | ;;; (completion-search-reset "CuMb") | |
1747 | ;;; (completion-search-next 0) --> "cumberbund" | |
1748 | ||
1749 | ||
1750 | \f | |
1751 | ;;;----------------------------------------------- | |
1752 | ;;; COMPLETE | |
1753 | ;;;----------------------------------------------- | |
1754 | ||
1755 | (defun completion-mode () | |
a7a2b1f6 | 1756 | "Toggles whether or not to add new words to the completion database." |
59ca07b5 | 1757 | (interactive) |
a7a2b1f6 RS |
1758 | (setq enable-completion (not enable-completion)) |
1759 | (message "Completion mode is now %s." (if enable-completion "ON" "OFF")) | |
59ca07b5 RS |
1760 | ) |
1761 | ||
1762 | (defvar cmpl-current-index 0) | |
1763 | (defvar cmpl-original-string nil) | |
1764 | (defvar cmpl-last-insert-location -1) | |
1765 | (defvar cmpl-leave-point-at-start nil) | |
1766 | ||
1767 | (defun complete (&optional arg) | |
a7a2b1f6 | 1768 | "Fill out a completion of the word before point. |
eb8c3be9 | 1769 | Point is left at end. Consecutive calls rotate through all possibilities. |
59ca07b5 RS |
1770 | Prefix args :: |
1771 | control-u :: leave the point at the beginning of the completion rather | |
1772 | than at the end. | |
1773 | a number :: rotate through the possible completions by that amount | |
1774 | `-' :: same as -1 (insert previous completion) | |
a7a2b1f6 | 1775 | {See the comments at the top of `completion.el' for more info.}" |
59ca07b5 RS |
1776 | (interactive "*p") |
1777 | ;;; Set up variables | |
1778 | (cond ((eq last-command this-command) | |
1779 | ;; Undo last one | |
1780 | (delete-region cmpl-last-insert-location (point)) | |
1781 | ;; get next completion | |
1782 | (setq cmpl-current-index (+ cmpl-current-index (or arg 1))) | |
1783 | ) | |
1784 | (t | |
1785 | (if (not cmpl-initialized-p) | |
1786 | (initialize-completions)) ;; make sure everything's loaded | |
1787 | (cond ((consp current-prefix-arg) ;; control-u | |
1788 | (setq arg 0) | |
1789 | (setq cmpl-leave-point-at-start t) | |
1790 | ) | |
1791 | (t | |
1792 | (setq cmpl-leave-point-at-start nil) | |
1793 | )) | |
1794 | ;; get string | |
1795 | (setq cmpl-original-string (symbol-before-point-for-complete)) | |
1796 | (cond ((not cmpl-original-string) | |
1797 | (setq this-command 'failed-complete) | |
136f8f67 | 1798 | (error "To complete, point must be after a symbol at least %d character long" |
a7a2b1f6 | 1799 | completion-prefix-min-length))) |
59ca07b5 RS |
1800 | ;; get index |
1801 | (setq cmpl-current-index (if current-prefix-arg arg 0)) | |
1802 | ;; statistics | |
1803 | (cmpl-statistics-block | |
1804 | (note-complete-entered-afresh cmpl-original-string)) | |
1805 | ;; reset database | |
1806 | (completion-search-reset cmpl-original-string) | |
1807 | ;; erase what we've got | |
1808 | (delete-region cmpl-symbol-start cmpl-symbol-end) | |
1809 | )) | |
1810 | ||
1811 | ;; point is at the point to insert the new symbol | |
1812 | ;; Get the next completion | |
1813 | (let* ((print-status-p | |
a7a2b1f6 | 1814 | (and (>= baud-rate completion-prompt-speed-threshold) |
59ca07b5 RS |
1815 | (not (minibuffer-window-selected-p)))) |
1816 | (insert-point (point)) | |
1817 | (entry (completion-search-next cmpl-current-index)) | |
1818 | string | |
1819 | ) | |
1820 | ;; entry is either a completion entry or a string (if cdabbrev) | |
1821 | ||
1822 | ;; If found, insert | |
1823 | (cond (entry | |
1824 | ;; Setup for proper case | |
1825 | (setq string (if (stringp entry) | |
1826 | entry (completion-string entry))) | |
1827 | (setq string (cmpl-merge-string-cases | |
1828 | string cmpl-original-string)) | |
1829 | ;; insert | |
1830 | (insert string) | |
1831 | ;; accept it | |
1832 | (setq completion-to-accept string) | |
1833 | ;; fixup and cache point | |
1834 | (cond (cmpl-leave-point-at-start | |
1835 | (setq cmpl-last-insert-location (point)) | |
1836 | (goto-char insert-point)) | |
1837 | (t;; point at end, | |
1838 | (setq cmpl-last-insert-location insert-point)) | |
1839 | ) | |
1840 | ;; statistics | |
1841 | (cmpl-statistics-block | |
1842 | (note-complete-inserted entry cmpl-current-index)) | |
1843 | ;; Done ! cmpl-stat-complete-successful | |
1844 | ;;display the next completion | |
1845 | (cond | |
1846 | ((and print-status-p | |
1847 | ;; This updates the display and only prints if there | |
1848 | ;; is no typeahead | |
a7a2b1f6 | 1849 | (sit-for 0) |
59ca07b5 RS |
1850 | (setq entry |
1851 | (completion-search-peek | |
a7a2b1f6 | 1852 | completion-cdabbrev-prompt-flag))) |
59ca07b5 RS |
1853 | (setq string (if (stringp entry) |
1854 | entry (completion-string entry))) | |
1855 | (setq string (cmpl-merge-string-cases | |
1856 | string cmpl-original-string)) | |
1857 | (message "Next completion: %s" string) | |
1858 | )) | |
1859 | ) | |
1860 | (t;; none found, insert old | |
1861 | (insert cmpl-original-string) | |
1862 | ;; Don't accept completions | |
1863 | (setq completion-to-accept nil) | |
1864 | ;; print message | |
23b97eb9 RS |
1865 | ;; This used to call cmpl19-sit-for, an undefined function. |
1866 | ;; I hope that sit-for does the right thing; I don't know -- rms. | |
1867 | (if (and print-status-p (sit-for 0)) | |
59ca07b5 RS |
1868 | (message "No %scompletions." |
1869 | (if (eq this-command last-command) "more " ""))) | |
1870 | ;; statistics | |
1871 | (cmpl-statistics-block | |
1872 | (record-complete-failed cmpl-current-index)) | |
1873 | ;; Pretend that we were never here | |
1874 | (setq this-command 'failed-complete) | |
1875 | )))) | |
1876 | ||
1877 | ;;;----------------------------------------------- | |
1878 | ;;; "Complete" Key Keybindings | |
1879 | ;;;----------------------------------------------- | |
1880 | ||
59ca07b5 | 1881 | (global-set-key "\M-\r" 'complete) |
a7a2b1f6 RS |
1882 | (global-set-key [?\C-\r] 'complete) |
1883 | (define-key function-key-map [C-return] [?\C-\r]) | |
59ca07b5 RS |
1884 | |
1885 | ;;; Tests - | |
1886 | ;;; (add-completion "cumberland") | |
1887 | ;;; (add-completion "cumberbund") | |
1888 | ;;; cum | |
1889 | ;;; Cumber | |
1890 | ;;; cumbering | |
1891 | ;;; cumb | |
1892 | ||
1893 | \f | |
1894 | ;;;--------------------------------------------------------------------------- | |
1895 | ;;; Parsing definitions from files into the database | |
1896 | ;;;--------------------------------------------------------------------------- | |
1897 | ||
1898 | ;;;----------------------------------------------- | |
1899 | ;;; Top Level functions :: | |
1900 | ;;;----------------------------------------------- | |
1901 | ||
1902 | ;;; User interface | |
1903 | (defun add-completions-from-file (file) | |
a7a2b1f6 | 1904 | "Parse possible completions from a file and add them to data base." |
59ca07b5 | 1905 | (interactive "fFile: ") |
a7a2b1f6 | 1906 | (setq file (expand-file-name file)) |
59ca07b5 RS |
1907 | (let* ((buffer (get-file-buffer file)) |
1908 | (buffer-already-there-p buffer) | |
1909 | ) | |
136f8f67 RS |
1910 | (if (not buffer-already-there-p) |
1911 | (let ((completions-merging-modes nil)) | |
1912 | (setq buffer (find-file-noselect file)))) | |
59ca07b5 RS |
1913 | (unwind-protect |
1914 | (save-excursion | |
1915 | (set-buffer buffer) | |
1916 | (add-completions-from-buffer) | |
1917 | ) | |
136f8f67 RS |
1918 | (if (not buffer-already-there-p) |
1919 | (kill-buffer buffer))))) | |
59ca07b5 RS |
1920 | |
1921 | (defun add-completions-from-buffer () | |
1922 | (interactive) | |
1923 | (let ((current-completion-source cmpl-source-file-parsing) | |
1924 | (start-num | |
1925 | (cmpl-statistics-block | |
1926 | (aref completion-add-count-vector cmpl-source-file-parsing))) | |
1927 | mode | |
1928 | ) | |
1929 | (cond ((memq major-mode '(emacs-lisp-mode lisp-mode)) | |
1930 | (add-completions-from-lisp-buffer) | |
1931 | (setq mode 'lisp) | |
1932 | ) | |
1933 | ((memq major-mode '(c-mode)) | |
1934 | (add-completions-from-c-buffer) | |
1935 | (setq mode 'c) | |
1936 | ) | |
1937 | (t | |
136f8f67 | 1938 | (error "Cannot parse completions in %s buffers" |
59ca07b5 RS |
1939 | major-mode) |
1940 | )) | |
1941 | (cmpl-statistics-block | |
1942 | (record-cmpl-parse-file | |
1943 | mode (point-max) | |
1944 | (- (aref completion-add-count-vector cmpl-source-file-parsing) | |
1945 | start-num))) | |
1946 | )) | |
1947 | ||
1948 | ;;; Find file hook | |
1949 | (defun cmpl-find-file-hook () | |
a7a2b1f6 | 1950 | (cond (enable-completion |
59ca07b5 | 1951 | (cond ((and (memq major-mode '(emacs-lisp-mode lisp-mode)) |
a7a2b1f6 | 1952 | (memq 'lisp completions-merging-modes) |
59ca07b5 RS |
1953 | ) |
1954 | (add-completions-from-buffer)) | |
1955 | ((and (memq major-mode '(c-mode)) | |
a7a2b1f6 | 1956 | (memq 'c completions-merging-modes) |
59ca07b5 RS |
1957 | ) |
1958 | (add-completions-from-buffer) | |
1959 | ))) | |
1960 | )) | |
1961 | ||
136f8f67 | 1962 | (add-hook 'find-file-hooks 'cmpl-find-file-hook) |
59ca07b5 RS |
1963 | |
1964 | ;;;----------------------------------------------- | |
1965 | ;;; Tags Table Completions | |
1966 | ;;;----------------------------------------------- | |
1967 | ||
1968 | (defun add-completions-from-tags-table () | |
1969 | ;; Inspired by eero@media-lab.media.mit.edu | |
a7a2b1f6 | 1970 | "Add completions from the current tags table." |
59ca07b5 RS |
1971 | (interactive) |
1972 | (visit-tags-table-buffer) ;this will prompt if no tags-table | |
1973 | (save-excursion | |
1974 | (goto-char (point-min)) | |
1975 | (let (string) | |
1976 | (condition-case e | |
1977 | (while t | |
1978 | (search-forward "\177") | |
1979 | (backward-char 3) | |
1980 | (and (setq string (symbol-under-point)) | |
1981 | (add-completion-to-tail-if-new string)) | |
1982 | (forward-char 3) | |
1983 | ) | |
1984 | (search-failed) | |
1985 | )))) | |
1986 | ||
1987 | \f | |
1988 | ;;;----------------------------------------------- | |
1989 | ;;; Lisp File completion parsing | |
1990 | ;;;----------------------------------------------- | |
1991 | ;;; This merely looks for phrases beginning with (def.... or | |
1992 | ;;; (package:def ... and takes the next word. | |
1993 | ;;; | |
1994 | ;;; We tried using forward-lines and explicit searches but the regexp technique | |
1995 | ;;; was faster. (About 100K characters per second) | |
1996 | ;;; | |
1997 | (defconst *lisp-def-regexp* | |
1998 | "\n(\\(\\w*:\\)?def\\(\\w\\|\\s_\\)*\\s +(*" | |
1999 | "A regexp that searches for lisp definition form." | |
2000 | ) | |
2001 | ||
2002 | ;;; Tests - | |
2003 | ;;; (and (string-match *lisp-def-regexp* "\n(defun foo") (match-end 0)) -> 8 | |
2004 | ;;; (and (string-match *lisp-def-regexp* "\n(si:def foo") (match-end 0)) -> 9 | |
2005 | ;;; (and (string-match *lisp-def-regexp* "\n(def-bar foo")(match-end 0)) -> 10 | |
2006 | ;;; (and (string-match *lisp-def-regexp* "\n(defun (foo") (match-end 0)) -> 9 | |
2007 | ||
a7a2b1f6 RS |
2008 | ;;; Parses all the definition names from a Lisp mode buffer and adds them to |
2009 | ;;; the completion database. | |
59ca07b5 | 2010 | (defun add-completions-from-lisp-buffer () |
59ca07b5 RS |
2011 | ;;; Benchmarks |
2012 | ;;; Sun-3/280 - 1500 to 3000 lines of lisp code per second | |
2013 | (let (string) | |
2014 | (save-excursion | |
2015 | (goto-char (point-min)) | |
2016 | (condition-case e | |
2017 | (while t | |
2018 | (re-search-forward *lisp-def-regexp*) | |
2019 | (and (setq string (symbol-under-point)) | |
2020 | (add-completion-to-tail-if-new string)) | |
2021 | ) | |
2022 | (search-failed) | |
2023 | )))) | |
2024 | ||
2025 | \f | |
2026 | ;;;----------------------------------------------- | |
2027 | ;;; C file completion parsing | |
2028 | ;;;----------------------------------------------- | |
2029 | ;;; C : | |
2030 | ;;; Looks for #define or [<storage class>] [<type>] <name>{,<name>} | |
2031 | ;;; or structure, array or pointer defs. | |
2032 | ;;; It gets most of the definition names. | |
2033 | ;;; | |
2034 | ;;; As you might suspect by now, we use some symbol table hackery | |
2035 | ;;; | |
2036 | ;;; Symbol separator chars (have whitespace syntax) --> , ; * = ( | |
2037 | ;;; Opening char --> [ { | |
2038 | ;;; Closing char --> ] } | |
eb8c3be9 | 2039 | ;;; opening and closing must be skipped over |
59ca07b5 RS |
2040 | ;;; Whitespace chars (have symbol syntax) |
2041 | ;;; Everything else has word syntax | |
2042 | ||
a7a2b1f6 | 2043 | (defun cmpl-make-c-def-completion-syntax-table () |
59ca07b5 RS |
2044 | (let ((table (make-vector 256 0)) |
2045 | (whitespace-chars '(? ?\n ?\t ?\f ?\v ?\r)) | |
eb8c3be9 | 2046 | ;; unfortunately the ?( causes the parens to appear unbalanced |
59ca07b5 RS |
2047 | (separator-chars '(?, ?* ?= ?\( ?\; |
2048 | )) | |
136f8f67 | 2049 | i) |
59ca07b5 | 2050 | ;; default syntax is whitespace |
136f8f67 RS |
2051 | (setq i 0) |
2052 | (while (< i 256) | |
2053 | (modify-syntax-entry i "w" table) | |
2054 | (setq i (1+ i))) | |
2055 | (completion-dolist (char whitespace-chars) | |
59ca07b5 | 2056 | (modify-syntax-entry char "_" table)) |
136f8f67 | 2057 | (completion-dolist (char separator-chars) |
59ca07b5 RS |
2058 | (modify-syntax-entry char " " table)) |
2059 | (modify-syntax-entry ?\[ "(]" table) | |
2060 | (modify-syntax-entry ?\{ "(}" table) | |
2061 | (modify-syntax-entry ?\] ")[" table) | |
2062 | (modify-syntax-entry ?\} "){" table) | |
2063 | table)) | |
2064 | ||
a7a2b1f6 | 2065 | (defconst cmpl-c-def-syntax-table (cmpl-make-c-def-completion-syntax-table)) |
59ca07b5 RS |
2066 | |
2067 | ;;; Regexps | |
2068 | (defconst *c-def-regexp* | |
2069 | ;; This stops on lines with possible definitions | |
2070 | "\n[_a-zA-Z#]" | |
2071 | ;; This stops after the symbol to add. | |
2072 | ;;"\n\\(#define\\s +.\\|\\(\\(\\w\\|\\s_\\)+\\b\\s *\\)+[(;,[*{=]\\)" | |
2073 | ;; This stops before the symbol to add. {Test cases in parens. below} | |
2074 | ;;"\n\\(\\(\\w\\|\\s_\\)+\\s *(\\|\\(\\(#define\\|auto\\|extern\\|register\\|static\\|int\\|long\\|short\\|unsigned\\|char\\|void\\|float\\|double\\|enum\\|struct\\|union\\|typedef\\)\\s +\\)+\\)" | |
2075 | ;; this simple version picks up too much extraneous stuff | |
2076 | ;; "\n\\(\\w\\|\\s_\\|#\\)\\B" | |
2077 | "A regexp that searches for a definition form." | |
2078 | ) | |
2079 | ; | |
2080 | ;(defconst *c-cont-regexp* | |
2081 | ; "\\(\\w\\|\\s_\\)+\\b\\s *\\({\\|\\(\\[[0-9\t ]*\\]\\s *\\)*,\\(*\\|\\s \\)*\\b\\)" | |
2082 | ; "This regexp should be used in a looking-at to parse for lists of variables.") | |
2083 | ; | |
2084 | ;(defconst *c-struct-regexp* | |
2085 | ; "\\(*\\|\\s \\)*\\b" | |
2086 | ; "This regexp should be used to test whether a symbol follows a structure definition.") | |
2087 | ||
2088 | ;(defun test-c-def-regexp (regexp string) | |
2089 | ; (and (eq 0 (string-match regexp string)) (match-end 0)) | |
2090 | ; ) | |
2091 | ||
2092 | ;;; Tests - | |
2093 | ;;; (test-c-def-regexp *c-def-regexp* "\n#define foo") -> 10 (9) | |
2094 | ;;; (test-c-def-regexp *c-def-regexp* "\nfoo (x, y) {") -> 6 (6) | |
2095 | ;;; (test-c-def-regexp *c-def-regexp* "\nint foo (x, y)") -> 10 (5) | |
2096 | ;;; (test-c-def-regexp *c-def-regexp* "\n int foo (x, y)") -> nil | |
2097 | ;;; (test-c-def-regexp *c-cont-regexp* "oo, bar") -> 4 | |
2098 | ;;; (test-c-def-regexp *c-cont-regexp* "oo, *bar") -> 5 | |
2099 | ;;; (test-c-def-regexp *c-cont-regexp* "a [5][6], bar") -> 10 | |
2100 | ;;; (test-c-def-regexp *c-cont-regexp* "oo(x,y)") -> nil | |
2101 | ;;; (test-c-def-regexp *c-cont-regexp* "a [6] ,\t bar") -> 9 | |
2102 | ;;; (test-c-def-regexp *c-cont-regexp* "oo {trout =1} my_carp;") -> 14 | |
2103 | ;;; (test-c-def-regexp *c-cont-regexp* "truct_p complex foon") -> nil | |
2104 | ||
a7a2b1f6 RS |
2105 | ;;; Parses all the definition names from a C mode buffer and adds them to the |
2106 | ;;; completion database. | |
59ca07b5 | 2107 | (defun add-completions-from-c-buffer () |
59ca07b5 RS |
2108 | ;; Benchmark -- |
2109 | ;; Sun 3/280-- 1250 lines/sec. | |
2110 | ||
2111 | (let (string next-point char | |
2112 | (saved-syntax (syntax-table)) | |
2113 | ) | |
2114 | (save-excursion | |
2115 | (goto-char (point-min)) | |
2116 | (catch 'finish-add-completions | |
2117 | (unwind-protect | |
2118 | (while t | |
2119 | ;; we loop here only when scan-sexps fails | |
2120 | ;; (i.e. unbalance exps.) | |
2121 | (set-syntax-table cmpl-c-def-syntax-table) | |
2122 | (condition-case e | |
2123 | (while t | |
2124 | (re-search-forward *c-def-regexp*) | |
2125 | (cond | |
2126 | ((= (preceding-char) ?#) | |
2127 | ;; preprocessor macro, see if it's one we handle | |
2128 | (setq string (buffer-substring (point) (+ (point) 6))) | |
2129 | (cond ((or (string-equal string "define") | |
2130 | (string-equal string "ifdef ") | |
2131 | ) | |
2132 | ;; skip forward over definition symbol | |
2133 | ;; and add it to database | |
2134 | (and (forward-word 2) | |
2135 | (setq string (symbol-before-point)) | |
2136 | ;;(push string foo) | |
2137 | (add-completion-to-tail-if-new string) | |
2138 | )))) | |
2139 | (t | |
2140 | ;; C definition | |
2141 | (setq next-point (point)) | |
2142 | (while (and | |
2143 | next-point | |
2144 | ;; scan to next separator char. | |
2145 | (setq next-point (scan-sexps next-point 1)) | |
2146 | ) | |
2147 | ;; position the point on the word we want to add | |
2148 | (goto-char next-point) | |
2149 | (while (= (setq char (following-char)) ?*) | |
2150 | ;; handle pointer ref | |
2151 | ;; move to next separator char. | |
2152 | (goto-char | |
2153 | (setq next-point (scan-sexps (point) 1))) | |
2154 | ) | |
2155 | (forward-word -1) | |
2156 | ;; add to database | |
2157 | (if (setq string (symbol-under-point)) | |
2158 | ;; (push string foo) | |
2159 | (add-completion-to-tail-if-new string) | |
2160 | ;; Local TMC hack (useful for parsing paris.h) | |
2161 | (if (and (looking-at "_AP") ;; "ansi prototype" | |
2162 | (progn | |
2163 | (forward-word -1) | |
2164 | (setq string | |
2165 | (symbol-under-point)) | |
2166 | )) | |
2167 | (add-completion-to-tail-if-new string) | |
2168 | ) | |
2169 | ) | |
2170 | ;; go to next | |
2171 | (goto-char next-point) | |
2172 | ;; (push (format "%c" (following-char)) foo) | |
2173 | (if (= (char-syntax char) ?\() | |
2174 | ;; if on an opening delimiter, go to end | |
2175 | (while (= (char-syntax char) ?\() | |
2176 | (setq next-point (scan-sexps next-point 1) | |
2177 | char (char-after next-point)) | |
2178 | ) | |
2179 | (or (= char ?,) | |
2180 | ;; Current char is an end char. | |
2181 | (setq next-point nil) | |
2182 | )) | |
2183 | )))) | |
2184 | (search-failed ;;done | |
2185 | (throw 'finish-add-completions t) | |
2186 | ) | |
2187 | (error | |
2188 | ;; Check for failure in scan-sexps | |
136f8f67 | 2189 | (if (or (string-equal (nth 1 e) |
59ca07b5 | 2190 | "Containing expression ends prematurely") |
136f8f67 | 2191 | (string-equal (nth 1 e) "Unbalanced parentheses")) |
59ca07b5 RS |
2192 | ;; unbalanced paren., keep going |
2193 | ;;(ding) | |
2194 | (forward-line 1) | |
136f8f67 | 2195 | (message "Error parsing C buffer for completions--please send bug report") |
59ca07b5 RS |
2196 | (throw 'finish-add-completions t) |
2197 | )) | |
2198 | )) | |
2199 | (set-syntax-table saved-syntax) | |
2200 | ))))) | |
2201 | ||
2202 | \f | |
2203 | ;;;--------------------------------------------------------------------------- | |
2204 | ;;; Init files | |
2205 | ;;;--------------------------------------------------------------------------- | |
2206 | ||
a7a2b1f6 | 2207 | ;;; The version of save-completions-to-file called at kill-emacs time. |
59ca07b5 | 2208 | (defun kill-emacs-save-completions () |
136f8f67 RS |
2209 | (if (and save-completions-flag enable-completion cmpl-initialized-p) |
2210 | (cond | |
2211 | ((not cmpl-completions-accepted-p) | |
2212 | (message "Completions database has not changed - not writing.")) | |
2213 | (t | |
2214 | (save-completions-to-file))))) | |
59ca07b5 | 2215 | |
1add72b5 RS |
2216 | ;; There is no point bothering to change this again |
2217 | ;; unless the package changes so much that it matters | |
2218 | ;; for people that have saved completions. | |
2219 | (defconst completion-version "11") | |
2220 | ||
59ca07b5 RS |
2221 | (defconst saved-cmpl-file-header |
2222 | ";;; Completion Initialization file. | |
2223 | ;;; Version = %s | |
2224 | ;;; Format is (<string> . <last-use-time>) | |
2225 | ;;; <string> is the completion | |
2226 | ;;; <last-use-time> is the time the completion was last used | |
2227 | ;;; If it is t, the completion will never be pruned from the file. | |
a7a2b1f6 | 2228 | ;;; Otherwise it is in hours since origin. |
59ca07b5 RS |
2229 | \n") |
2230 | ||
2231 | (defun completion-backup-filename (filename) | |
2232 | (concat filename ".BAK")) | |
2233 | ||
2234 | (defun save-completions-to-file (&optional filename) | |
a7a2b1f6 RS |
2235 | "Save completions in init file FILENAME. |
2236 | If file name is not specified, use `save-completions-file-name'." | |
59ca07b5 | 2237 | (interactive) |
a7a2b1f6 | 2238 | (setq filename (expand-file-name (or filename save-completions-file-name))) |
136f8f67 RS |
2239 | (if (file-writable-p filename) |
2240 | (progn | |
2241 | (if (not cmpl-initialized-p) | |
2242 | (initialize-completions));; make sure everything's loaded | |
2243 | (message "Saving completions to file %s" filename) | |
2244 | ||
2245 | (let* ((delete-old-versions t) | |
2246 | (kept-old-versions 0) | |
2247 | (kept-new-versions completions-file-versions-kept) | |
2248 | last-use-time | |
2249 | (current-time (cmpl-hours-since-origin)) | |
2250 | (total-in-db 0) | |
2251 | (total-perm 0) | |
2252 | (total-saved 0) | |
2253 | (backup-filename (completion-backup-filename filename)) | |
2254 | ) | |
59ca07b5 | 2255 | |
136f8f67 RS |
2256 | (save-excursion |
2257 | (get-buffer-create " *completion-save-buffer*") | |
2258 | (set-buffer " *completion-save-buffer*") | |
2259 | (setq buffer-file-name filename) | |
2260 | ||
2261 | (if (not (verify-visited-file-modtime (current-buffer))) | |
2262 | (progn | |
2263 | ;; file has changed on disk. Bring us up-to-date | |
2264 | (message "Completion file has changed. Merging. . .") | |
2265 | (load-completions-from-file filename t) | |
2266 | (message "Merging finished. Saving completions to file %s" filename))) | |
2267 | ||
2268 | ;; prepare the buffer to be modified | |
2269 | (clear-visited-file-modtime) | |
2270 | (erase-buffer) | |
2271 | ;; (/ 1 0) | |
2272 | (insert (format saved-cmpl-file-header completion-version)) | |
2273 | (completion-dolist (completion (list-all-completions)) | |
2274 | (setq total-in-db (1+ total-in-db)) | |
2275 | (setq last-use-time (completion-last-use-time completion)) | |
2276 | ;; Update num uses and maybe write completion to a file | |
2277 | (cond ((or;; Write to file if | |
2278 | ;; permanent | |
2279 | (and (eq last-use-time t) | |
2280 | (setq total-perm (1+ total-perm))) | |
2281 | ;; or if | |
2282 | (if (> (completion-num-uses completion) 0) | |
2283 | ;; it's been used | |
2284 | (setq last-use-time current-time) | |
2285 | ;; or it was saved before and | |
2286 | (and last-use-time | |
2287 | ;; save-completions-retention-time is nil | |
2288 | (or (not save-completions-retention-time) | |
2289 | ;; or time since last use is < ...retention-time* | |
2290 | (< (- current-time last-use-time) | |
2291 | save-completions-retention-time)) | |
2292 | ))) | |
2293 | ;; write to file | |
2294 | (setq total-saved (1+ total-saved)) | |
2295 | (insert (prin1-to-string (cons (completion-string completion) | |
2296 | last-use-time)) "\n") | |
2297 | ))) | |
59ca07b5 | 2298 | |
136f8f67 RS |
2299 | ;; write the buffer |
2300 | (condition-case e | |
2301 | (let ((file-exists-p (file-exists-p filename))) | |
2302 | (if file-exists-p | |
2303 | (progn | |
2304 | ;; If file exists . . . | |
2305 | ;; Save a backup(so GNU doesn't screw us when we're out of disk) | |
2306 | ;; (GNU leaves a 0 length file if it gets a disk full error!) | |
59ca07b5 | 2307 | |
136f8f67 RS |
2308 | ;; If backup doesn't exit, Rename current to backup |
2309 | ;; {If backup exists the primary file is probably messed up} | |
2310 | (or (file-exists-p backup-filename) | |
2311 | (rename-file filename backup-filename)) | |
2312 | ;; Copy the backup back to the current name | |
2313 | ;; (so versioning works) | |
2314 | (copy-file backup-filename filename t))) | |
2315 | ;; Save it | |
2316 | (save-buffer) | |
2317 | (if file-exists-p | |
2318 | ;; If successful, remove backup | |
2319 | (delete-file backup-filename))) | |
2320 | (error | |
2321 | (set-buffer-modified-p nil) | |
2322 | (message "Couldn't save completion file `%s'" filename) | |
2323 | )) | |
2324 | ;; Reset accepted-p flag | |
2325 | (setq cmpl-completions-accepted-p nil) | |
2326 | ) | |
2327 | (cmpl-statistics-block | |
2328 | (record-save-completions total-in-db total-perm total-saved)) | |
2329 | )))) | |
59ca07b5 | 2330 | |
a7a2b1f6 | 2331 | ;;;(defun autosave-completions () |
136f8f67 RS |
2332 | ;;; (if (and save-completions-flag enable-completion cmpl-initialized-p |
2333 | ;;; *completion-auto-save-period* | |
2334 | ;;; (> cmpl-emacs-idle-time *completion-auto-save-period*) | |
2335 | ;;; cmpl-completions-accepted-p) | |
2336 | ;;; (save-completions-to-file))) | |
59ca07b5 | 2337 | |
136f8f67 | 2338 | ;;;(add-hook 'cmpl-emacs-idle-time-hooks 'autosave-completions) |
59ca07b5 RS |
2339 | |
2340 | (defun load-completions-from-file (&optional filename no-message-p) | |
a7a2b1f6 RS |
2341 | "Loads a completion init file FILENAME. |
2342 | If file is not specified, then use `save-completions-file-name'." | |
59ca07b5 | 2343 | (interactive) |
a7a2b1f6 | 2344 | (setq filename (expand-file-name (or filename save-completions-file-name))) |
59ca07b5 RS |
2345 | (let* ((backup-filename (completion-backup-filename filename)) |
2346 | (backup-readable-p (file-readable-p backup-filename)) | |
2347 | ) | |
136f8f67 RS |
2348 | (if backup-readable-p (setq filename backup-filename)) |
2349 | (if (file-readable-p filename) | |
2350 | (progn | |
2351 | (if (not no-message-p) | |
2352 | (message "Loading completions from %sfile %s . . ." | |
2353 | (if backup-readable-p "backup " "") filename)) | |
2354 | (save-excursion | |
2355 | (get-buffer-create " *completion-save-buffer*") | |
2356 | (set-buffer " *completion-save-buffer*") | |
2357 | (setq buffer-file-name filename) | |
2358 | ;; prepare the buffer to be modified | |
2359 | (clear-visited-file-modtime) | |
2360 | (erase-buffer) | |
59ca07b5 | 2361 | |
136f8f67 RS |
2362 | (let ((insert-okay-p nil) |
2363 | (buffer (current-buffer)) | |
2364 | (current-time (cmpl-hours-since-origin)) | |
2365 | string num-uses entry last-use-time | |
2366 | cmpl-entry cmpl-last-use-time | |
2367 | (current-completion-source cmpl-source-init-file) | |
2368 | (start-num | |
2369 | (cmpl-statistics-block | |
2370 | (aref completion-add-count-vector cmpl-source-file-parsing))) | |
2371 | (total-in-file 0) (total-perm 0) | |
2372 | ) | |
2373 | ;; insert the file into a buffer | |
2374 | (condition-case e | |
2375 | (progn (insert-file-contents filename t) | |
2376 | (setq insert-okay-p t)) | |
2377 | ||
2378 | (file-error | |
2379 | (message "File error trying to load completion file %s." | |
2380 | filename))) | |
2381 | ;; parse it | |
2382 | (if insert-okay-p | |
2383 | (progn | |
2384 | (goto-char (point-min)) | |
2385 | ||
2386 | (condition-case e | |
2387 | (while t | |
2388 | (setq entry (read buffer)) | |
2389 | (setq total-in-file (1+ total-in-file)) | |
2390 | (cond | |
2391 | ((and (consp entry) | |
2392 | (stringp (setq string (car entry))) | |
2393 | (cond | |
2394 | ((eq (setq last-use-time (cdr entry)) 'T) | |
2395 | ;; handle case sensitivity | |
2396 | (setq total-perm (1+ total-perm)) | |
2397 | (setq last-use-time t)) | |
2398 | ((eq last-use-time t) | |
2399 | (setq total-perm (1+ total-perm))) | |
2400 | ((integerp last-use-time)) | |
2401 | )) | |
2402 | ;; Valid entry | |
2403 | ;; add it in | |
2404 | (setq cmpl-last-use-time | |
2405 | (completion-last-use-time | |
2406 | (setq cmpl-entry | |
2407 | (add-completion-to-tail-if-new string)) | |
59ca07b5 | 2408 | )) |
136f8f67 RS |
2409 | (if (or (eq last-use-time t) |
2410 | (and (> last-use-time 1000);;backcompatibility | |
2411 | (not (eq cmpl-last-use-time t)) | |
2412 | (or (not cmpl-last-use-time) | |
2413 | ;; more recent | |
2414 | (> last-use-time cmpl-last-use-time)) | |
2415 | )) | |
2416 | ;; update last-use-time | |
2417 | (set-completion-last-use-time cmpl-entry last-use-time) | |
2418 | )) | |
2419 | (t | |
2420 | ;; Bad format | |
2421 | (message "Error: invalid saved completion - %s" | |
2422 | (prin1-to-string entry)) | |
2423 | ;; try to get back in sync | |
2424 | (search-forward "\n(") | |
2425 | ))) | |
2426 | (search-failed | |
2427 | (message "End of file while reading completions.") | |
2428 | ) | |
2429 | (end-of-file | |
2430 | (if (= (point) (point-max)) | |
2431 | (if (not no-message-p) | |
2432 | (message "Loading completions from file %s . . . Done." | |
2433 | filename)) | |
2434 | (message "End of file while reading completions.") | |
2435 | )) | |
59ca07b5 | 2436 | ))) |
59ca07b5 | 2437 | |
136f8f67 RS |
2438 | (cmpl-statistics-block |
2439 | (record-load-completions | |
2440 | total-in-file total-perm | |
2441 | (- (aref completion-add-count-vector cmpl-source-init-file) | |
2442 | start-num))) | |
59ca07b5 | 2443 | |
136f8f67 | 2444 | )))))) |
59ca07b5 RS |
2445 | |
2446 | (defun initialize-completions () | |
a7a2b1f6 | 2447 | "Load the default completions file. |
c2ced5d8 | 2448 | Also sets up so that exiting emacs will automatically save the file." |
59ca07b5 RS |
2449 | (interactive) |
2450 | (cond ((not cmpl-initialized-p) | |
2451 | (load-completions-from-file) | |
2452 | )) | |
59ca07b5 RS |
2453 | (setq cmpl-initialized-p t) |
2454 | ) | |
2455 | ||
2456 | ||
2457 | ;;;----------------------------------------------- | |
2458 | ;;; Kill EMACS patch | |
2459 | ;;;----------------------------------------------- | |
2460 | ||
a7a2b1f6 RS |
2461 | (add-hook 'kill-emacs-hook |
2462 | '(lambda () | |
2463 | (kill-emacs-save-completions) | |
2464 | (cmpl-statistics-block | |
2465 | (record-cmpl-kill-emacs)))) | |
59ca07b5 RS |
2466 | \f |
2467 | ;;;----------------------------------------------- | |
2468 | ;;; Kill region patch | |
2469 | ;;;----------------------------------------------- | |
2470 | ||
a7a2b1f6 | 2471 | (defun completion-kill-region (&optional beg end) |
59ca07b5 RS |
2472 | "Kill between point and mark. |
2473 | The text is deleted but saved in the kill ring. | |
2474 | The command \\[yank] can retrieve it from there. | |
2475 | /(If you want to kill and then yank immediately, use \\[copy-region-as-kill].) | |
2476 | ||
2477 | This is the primitive for programs to kill text (as opposed to deleting it). | |
2478 | Supply two arguments, character numbers indicating the stretch of text | |
2479 | to be killed. | |
2480 | Any command that calls this function is a \"kill command\". | |
2481 | If the previous command was also a kill command, | |
2482 | the text killed this time appends to the text killed last time | |
2483 | to make one entry in the kill ring. | |
2484 | Patched to remove the most recent completion." | |
a7a2b1f6 RS |
2485 | (interactive "r") |
2486 | (cond ((eq last-command 'complete) | |
59ca07b5 RS |
2487 | (delete-region (point) cmpl-last-insert-location) |
2488 | (insert cmpl-original-string) | |
2489 | (setq completion-to-accept nil) | |
2490 | (cmpl-statistics-block | |
a7a2b1f6 | 2491 | (record-complete-failed))) |
59ca07b5 | 2492 | (t |
a7a2b1f6 | 2493 | (kill-region beg end)))) |
59ca07b5 | 2494 | |
a7a2b1f6 RS |
2495 | (global-set-key "\C-w" 'completion-kill-region) |
2496 | \f | |
59ca07b5 RS |
2497 | ;;;----------------------------------------------- |
2498 | ;;; Patches to self-insert-command. | |
2499 | ;;;----------------------------------------------- | |
2500 | ||
eb8c3be9 | 2501 | ;;; Need 2 versions: generic separator chars. and space (to get auto fill |
59ca07b5 RS |
2502 | ;;; to work) |
2503 | ||
2504 | ;;; All common separators (eg. space "(" ")" """) characters go through a | |
2505 | ;;; function to add new words to the list of words to complete from: | |
2506 | ;;; COMPLETION-SEPARATOR-SELF-INSERT-COMMAND (arg). | |
2507 | ;;; If the character before this was an alpha-numeric then this adds the | |
eb8c3be9 | 2508 | ;;; symbol before point to the completion list (using ADD-COMPLETION). |
59ca07b5 RS |
2509 | |
2510 | (defun completion-separator-self-insert-command (arg) | |
2511 | (interactive "p") | |
2512 | (use-completion-before-separator) | |
2513 | (self-insert-command arg) | |
2514 | ) | |
2515 | ||
2516 | (defun completion-separator-self-insert-autofilling (arg) | |
2517 | (interactive "p") | |
2518 | (use-completion-before-separator) | |
2519 | (self-insert-command arg) | |
a7263218 | 2520 | (and auto-fill-function |
e5d77022 | 2521 | (funcall auto-fill-function)) |
59ca07b5 RS |
2522 | ) |
2523 | ||
2524 | ;;;----------------------------------------------- | |
2525 | ;;; Wrapping Macro | |
2526 | ;;;----------------------------------------------- | |
2527 | ||
2528 | ;;; Note that because of the way byte compiling works, none of | |
2529 | ;;; the functions defined with this macro get byte compiled. | |
2530 | ||
2531 | (defmacro def-completion-wrapper (function-name type &optional new-name) | |
c2ced5d8 CZ |
2532 | "Add a call to update the completion database before function execution. |
2533 | TYPE is the type of the wrapper to be added. Can be :before or :under." | |
a7a2b1f6 RS |
2534 | (cond ((eq type ':separator) |
2535 | (list 'put (list 'quote function-name) ''completion-function | |
2536 | ''use-completion-before-separator)) | |
2537 | ((eq type ':before) | |
2538 | (list 'put (list 'quote function-name) ''completion-function | |
2539 | ''use-completion-before-point)) | |
2540 | ((eq type ':backward-under) | |
2541 | (list 'put (list 'quote function-name) ''completion-function | |
2542 | ''use-completion-backward-under)) | |
2543 | ((eq type ':backward) | |
2544 | (list 'put (list 'quote function-name) ''completion-function | |
2545 | ''use-completion-backward)) | |
2546 | ((eq type ':under) | |
2547 | (list 'put (list 'quote function-name) ''completion-function | |
2548 | ''use-completion-under-point)) | |
2549 | ((eq type ':under-or-before) | |
2550 | (list 'put (list 'quote function-name) ''completion-function | |
2551 | ''use-completion-under-or-before-point)) | |
2552 | ((eq type ':minibuffer-separator) | |
2553 | (list 'put (list 'quote function-name) ''completion-function | |
2554 | ''use-completion-minibuffer-separator)))) | |
2555 | ||
2556 | (defun use-completion-minibuffer-separator () | |
2557 | (let ((cmpl-syntax-table cmpl-standard-syntax-table)) | |
2558 | (use-completion-before-separator))) | |
2559 | ||
2560 | (defun use-completion-backward-under () | |
2561 | (use-completion-under-point) | |
2562 | (if (eq last-command 'complete) | |
2563 | ;; probably a failed completion if you have to back up | |
2564 | (cmpl-statistics-block (record-complete-failed)))) | |
2565 | ||
2566 | (defun use-completion-backward () | |
2567 | (if (eq last-command 'complete) | |
2568 | ;; probably a failed completion if you have to back up | |
2569 | (cmpl-statistics-block (record-complete-failed)))) | |
2570 | ||
2571 | (defun completion-before-command () | |
76e91049 RS |
2572 | (funcall (or (and (symbolp this-command) |
2573 | (get this-command 'completion-function)) | |
a7a2b1f6 | 2574 | 'use-completion-under-or-before-point))) |
649ddbf5 | 2575 | (add-hook 'pre-command-hook 'completion-before-command) |
59ca07b5 RS |
2576 | |
2577 | ||
2578 | ;;;--------------------------------------------------------------------------- | |
2579 | ;;; Patches to standard keymaps insert completions | |
2580 | ;;;--------------------------------------------------------------------------- | |
2581 | ||
2582 | ;;;----------------------------------------------- | |
2583 | ;;; Separators | |
2584 | ;;;----------------------------------------------- | |
2585 | ;;; We've used the completion syntax table given as a guide. | |
2586 | ;;; | |
2587 | ;;; Global separator chars. | |
2588 | ;;; We left out <tab> because there are too many special cases for it. Also, | |
2589 | ;;; in normal coding it's rarely typed after a word. | |
2590 | (global-set-key " " 'completion-separator-self-insert-autofilling) | |
2591 | (global-set-key "!" 'completion-separator-self-insert-command) | |
2592 | (global-set-key "%" 'completion-separator-self-insert-command) | |
2593 | (global-set-key "^" 'completion-separator-self-insert-command) | |
2594 | (global-set-key "&" 'completion-separator-self-insert-command) | |
2595 | (global-set-key "(" 'completion-separator-self-insert-command) | |
2596 | (global-set-key ")" 'completion-separator-self-insert-command) | |
2597 | (global-set-key "=" 'completion-separator-self-insert-command) | |
2598 | (global-set-key "`" 'completion-separator-self-insert-command) | |
2599 | (global-set-key "|" 'completion-separator-self-insert-command) | |
2600 | (global-set-key "{" 'completion-separator-self-insert-command) | |
2601 | (global-set-key "}" 'completion-separator-self-insert-command) | |
2602 | (global-set-key "[" 'completion-separator-self-insert-command) | |
2603 | (global-set-key "]" 'completion-separator-self-insert-command) | |
2604 | (global-set-key ";" 'completion-separator-self-insert-command) | |
2605 | (global-set-key "\"" 'completion-separator-self-insert-command) | |
2606 | (global-set-key "'" 'completion-separator-self-insert-command) | |
2607 | (global-set-key "#" 'completion-separator-self-insert-command) | |
2608 | (global-set-key "," 'completion-separator-self-insert-command) | |
2609 | (global-set-key "?" 'completion-separator-self-insert-command) | |
2610 | ||
2611 | ;;; We include period and colon even though they are symbol chars because : | |
2612 | ;;; - in text we want to pick up the last word in a sentence. | |
2613 | ;;; - in C pointer refs. we want to pick up the first symbol | |
2614 | ;;; - it won't make a difference for lisp mode (package names are short) | |
2615 | (global-set-key "." 'completion-separator-self-insert-command) | |
2616 | (global-set-key ":" 'completion-separator-self-insert-command) | |
2617 | ||
2618 | ;;; Lisp Mode diffs | |
2619 | (define-key lisp-mode-map "!" 'self-insert-command) | |
2620 | (define-key lisp-mode-map "&" 'self-insert-command) | |
2621 | (define-key lisp-mode-map "%" 'self-insert-command) | |
2622 | (define-key lisp-mode-map "?" 'self-insert-command) | |
2623 | (define-key lisp-mode-map "=" 'self-insert-command) | |
2624 | (define-key lisp-mode-map "^" 'self-insert-command) | |
2625 | ||
2626 | ;;; C mode diffs. | |
2627 | (def-completion-wrapper electric-c-semi :separator) | |
2628 | (define-key c-mode-map "+" 'completion-separator-self-insert-command) | |
2629 | (define-key c-mode-map "*" 'completion-separator-self-insert-command) | |
2630 | (define-key c-mode-map "/" 'completion-separator-self-insert-command) | |
2631 | ||
2632 | ;;; FORTRAN mode diffs. (these are defined when fortran is called) | |
2633 | (defun completion-setup-fortran-mode () | |
2634 | (define-key fortran-mode-map "+" 'completion-separator-self-insert-command) | |
2635 | (define-key fortran-mode-map "-" 'completion-separator-self-insert-command) | |
2636 | (define-key fortran-mode-map "*" 'completion-separator-self-insert-command) | |
2637 | (define-key fortran-mode-map "/" 'completion-separator-self-insert-command) | |
2638 | ) | |
2639 | ||
2640 | ;;;----------------------------------------------- | |
2641 | ;;; End of line chars. | |
2642 | ;;;----------------------------------------------- | |
2643 | (def-completion-wrapper newline :separator) | |
2644 | (def-completion-wrapper newline-and-indent :separator) | |
27c26a08 | 2645 | (def-completion-wrapper comint-send-input :separator) |
59ca07b5 RS |
2646 | (def-completion-wrapper exit-minibuffer :minibuffer-separator) |
2647 | (def-completion-wrapper eval-print-last-sexp :separator) | |
2648 | (def-completion-wrapper eval-last-sexp :separator) | |
2649 | ;;(def-completion-wrapper minibuffer-complete-and-exit :minibuffer) | |
2650 | ||
2651 | ;;;----------------------------------------------- | |
2652 | ;;; Cursor movement | |
2653 | ;;;----------------------------------------------- | |
2654 | ||
2655 | (def-completion-wrapper next-line :under-or-before) | |
2656 | (def-completion-wrapper previous-line :under-or-before) | |
2657 | (def-completion-wrapper beginning-of-buffer :under-or-before) | |
2658 | (def-completion-wrapper end-of-buffer :under-or-before) | |
a7a2b1f6 RS |
2659 | (def-completion-wrapper beginning-of-line :under-or-before) |
2660 | (def-completion-wrapper end-of-line :under-or-before) | |
2661 | (def-completion-wrapper forward-char :under-or-before) | |
2662 | (def-completion-wrapper forward-word :under-or-before) | |
2663 | (def-completion-wrapper forward-sexp :under-or-before) | |
2664 | (def-completion-wrapper backward-char :backward-under) | |
2665 | (def-completion-wrapper backward-word :backward-under) | |
2666 | (def-completion-wrapper backward-sexp :backward-under) | |
2667 | ||
2668 | (def-completion-wrapper delete-backward-char :backward) | |
2669 | (def-completion-wrapper delete-backward-char-untabify :backward) | |
59ca07b5 | 2670 | |
59ca07b5 RS |
2671 | ;;; Tests -- |
2672 | ;;; foobarbiz | |
2673 | ;;; foobar | |
2674 | ;;; fooquux | |
2675 | ;;; fooper | |
2676 | ||
2677 | (cmpl-statistics-block | |
2678 | (record-completion-file-loaded)) | |
c0274f38 ER |
2679 | |
2680 | ;;; completion.el ends here |