|
0
|
1 ;;; tempo.el --- Flexible template insertion
|
|
|
2 ;; Copyright (C) 1994, 1995 Free Software Foundation, Inc.
|
|
|
3
|
|
|
4 ;; Author: David K}gedal <davidk@lysator.liu.se >
|
|
|
5 ;; Created: 16 Feb 1994
|
|
|
6 ;; Modified: 20 Jun 1995
|
|
|
7 ;; Version: 1.2.4
|
|
|
8 ;; Keywords: extensions, languages, tools
|
|
|
9 ;; $Revision: 1.1.1.1 $
|
|
|
10
|
|
|
11 ;; This file is part of GNU Emacs.
|
|
|
12
|
|
|
13 ;; GNU Emacs is free software; you can redistribute it and/or modify
|
|
|
14 ;; it under the terms of the GNU General Public License as published by
|
|
|
15 ;; the Free Software Foundation; either version 2, or (at your option)
|
|
|
16 ;; any later version.
|
|
|
17
|
|
|
18 ;; GNU Emacs is distributed in the hope that it will be useful,
|
|
|
19 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
20 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
|
21 ;; GNU General Public License for more details.
|
|
|
22
|
|
|
23 ;; You should have received a copy of the GNU General Public License
|
|
|
24 ;; along with GNU Emacs; see the file COPYING. If not, write to
|
|
|
25 ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
|
26
|
|
|
27 ;;; Commentary:
|
|
|
28
|
|
|
29 ;; This file provides a simple way to define powerful templates, or
|
|
|
30 ;; macros, if you wish. It is mainly intended for, but not limited to,
|
|
|
31 ;; other programmers to be used for creating shortcuts for editing
|
|
|
32 ;; certain kind of documents. It was originally written to be used by
|
|
|
33 ;; a HTML editing mode written by Nelson Minar <nelson@santafe.edu>,
|
|
|
34 ;; and his html-helper-mode.el is probably the best example of how to
|
|
|
35 ;; use this program.
|
|
|
36
|
|
|
37 ;; A template is defined as a list of items to be inserted in the
|
|
|
38 ;; current buffer at point. Some of the items can be simple strings,
|
|
|
39 ;; while other can control formatting or define special points of
|
|
|
40 ;; interest in the inserted text.
|
|
|
41
|
|
|
42 ;; If a template defines a "point of interest" that point is inserted
|
|
|
43 ;; in a buffer-local list of "points of interest" that the user can
|
|
|
44 ;; jump between with the commands `tempo-backward-mark' and
|
|
|
45 ;; `tempo-forward-mark'. If the template definer provides a prompt for
|
|
|
46 ;; the point, and the variable `tempo-interactive' is non-nil, the
|
|
|
47 ;; user will be prompted for a string to be inserted in the buffer,
|
|
|
48 ;; using the minibuffer.
|
|
|
49
|
|
|
50 ;; The template can also define one point to be replaced with the
|
|
|
51 ;; current region if the template command is called with a prefix (or
|
|
|
52 ;; a non-nil argument).
|
|
|
53
|
|
|
54 ;; More flexible templates can be created by including lisp symbols,
|
|
|
55 ;; which will be evaluated as variables, or lists, which will will be
|
|
|
56 ;; evaluated as lisp expressions.
|
|
|
57
|
|
|
58 ;; See the documentation for tempo-define-template for the different
|
|
|
59 ;; items that can be used to define a tempo template.
|
|
|
60
|
|
|
61 ;; One of the more powerful features of tempo templates are automatic
|
|
|
62 ;; completion. With every template can be assigned a special tag that
|
|
|
63 ;; should be recognized by `tempo-complete-tag' and expanded to the
|
|
|
64 ;; complete template. By default the tags are added to a global list
|
|
|
65 ;; of template tags, and are matched against the last word before
|
|
|
66 ;; point. But if you assign your tags to a specific list, you can also
|
|
|
67 ;; specify another method for matching text in the buffer against the
|
|
|
68 ;; tags. In the HTML mode, for instance, the tags are matched against
|
|
|
69 ;; the text between the last `<' and point.
|
|
|
70
|
|
|
71 ;; When defining a template named `foo', a symbol named
|
|
|
72 ;; `tempo-template-foo' will be created whose value as a variable will
|
|
|
73 ;; be the template definition, and its function value will be an
|
|
|
74 ;; interactive function that inserts the template at the point.
|
|
|
75
|
|
|
76 ;; The latest tempo.el distribution can be fetched from
|
|
|
77 ;; ftp.lysator.liu.se in the directory /pub/emacs
|
|
|
78
|
|
|
79 ;; There is also a WWW page at
|
|
|
80 ;; http://www.lysator.liu.se/~davidk/elisp/ which has some information
|
|
|
81
|
|
|
82 ;;; Known bugs:
|
|
|
83
|
|
|
84 ;; If the 'o is the first element in a template, strange things can
|
|
|
85 ;; happen when the template is inserted at the beginning of a
|
|
|
86 ;; line. This is due to strange behaviour in open-line. But it should
|
|
|
87 ;; be easily avoided.
|
|
|
88
|
|
|
89 ;; The 'o tag is also a problem when including the region. This will
|
|
|
90 ;; be looked into.
|
|
|
91
|
|
|
92 ;; Clicking mouse-2 in the completion buffer gives strange results.
|
|
|
93
|
|
|
94 ;; There is a bug in some emacs versions that prevents completion from
|
|
|
95 ;; working. If it doesn't work for you, send me a note indicating your
|
|
|
96 ;; emacs version and your problems.
|
|
|
97
|
|
|
98 ;;; Contributors:
|
|
|
99
|
|
|
100 ;; These people have given me importand feedback and new ideas for
|
|
|
101 ;; tempo.el. Thanks.
|
|
|
102
|
|
|
103 ;; Nelson Minar <nelson@santafe.edu>
|
|
|
104 ;; Richard Stallman <rms@gnu.ai.mit.edu>
|
|
|
105 ;; Lars Lindberg <Lars.Lindberg@sypro.cap.se>
|
|
|
106 ;; Glen Whitney <Glen.Whitney@math.lsa.umich.edu>
|
|
|
107
|
|
|
108 ;;; Code:
|
|
|
109
|
|
|
110 ;; (provide 'tempo)
|
|
|
111
|
|
|
112 ;;; User options
|
|
|
113
|
|
|
114 (defvar tempo-interactive t ;; wing change
|
|
|
115 "*Prompt user for strings in templates.
|
|
|
116 If this variable is non-nil, `tempo-insert' prompts the
|
|
|
117 user for text to insert in the templates")
|
|
|
118
|
|
|
119 (defvar tempo-insert-region nil
|
|
|
120 "*Automatically insert current region when there is a `r' in the template
|
|
|
121 If this variable is NIL, `r' elements will be treated just like `p'
|
|
|
122 elements, unless the template function is given a prefix (or a non-nil
|
|
|
123 argument). If this variable is non-NIL, the behaviour is reversed.
|
|
|
124
|
|
|
125 In Transient Mark mode, this option is unused.")
|
|
|
126
|
|
|
127 (defvar tempo-show-completion-buffer t
|
|
|
128 "*If non-NIL, show a buffer with possible completions, when only
|
|
|
129 a partial completion can be found")
|
|
|
130
|
|
|
131 (defvar tempo-leave-completion-buffer nil
|
|
|
132 "*If NIL, a completion buffer generated by \\[tempo-complete-tag]
|
|
|
133 disappears at the next keypress; otherwise, it remains forever.")
|
|
|
134
|
|
|
135 ;;; Internal variables
|
|
|
136
|
|
|
137 (defvar tempo-insert-string-functions nil
|
|
|
138 "List of functions to run when inserting a string.
|
|
|
139 Each function is called with a single arg, STRING and should return
|
|
|
140 another string. This could be used for making all strings upcase by
|
|
|
141 setting it to '(upcase), for example.")
|
|
|
142
|
|
|
143 (defvar tempo-tags nil
|
|
|
144 "An association list with tags and corresponding templates")
|
|
|
145
|
|
|
146 (defvar tempo-local-tags '((tempo-tags . nil))
|
|
|
147 "A list of locally installed tag completion lists.
|
|
|
148 It is a association list where the car of every element is a symbol
|
|
|
149 whose varable value is a template list. The cdr part, if non-nil, is a
|
|
|
150 function or a regexp that defines the string to match. See the
|
|
|
151 documentation for the function `tempo-complete-tag' for more info.
|
|
|
152
|
|
|
153 `tempo-tags' is always in the last position in this list.")
|
|
|
154
|
|
|
155 (defvar tempo-collection nil
|
|
|
156 "A collection of all the tags defined for the current buffer.")
|
|
|
157
|
|
|
158 (defvar tempo-dirty-collection t
|
|
|
159 "Indicates if the tag collection needs to be rebuilt.")
|
|
|
160
|
|
|
161 (defvar tempo-marks nil
|
|
|
162 "A list of marks to jump to with `\\[tempo-forward-mark]' and `\\[tempo-backward-mark]'.")
|
|
|
163
|
|
|
164 (defvar tempo-match-finder "\\b\\([^\\b]+\\)\\="
|
|
|
165 "The regexp or function used to find the string to match against tags.
|
|
|
166
|
|
|
167 If `tempo-match-finder is a string, it should contain a regular
|
|
|
168 expression with at least one \\( \\) pair. When searching for tags,
|
|
|
169 `tempo-complete-tag' calls `re-search-backward' with this string, and
|
|
|
170 the string between the first \\( and \\) is used for matching against
|
|
|
171 each string in the tag list. If one is found, the whole text between
|
|
|
172 the first \\( and the point is replaced with the inserted template.
|
|
|
173
|
|
|
174 You will probably want to include \\ \= at the end of the regexp to
|
|
|
175 make sure that the string is matched only against text adjacent to the
|
|
|
176 point.
|
|
|
177
|
|
|
178 If `tempo-match-finder' is a symbol, it should be a function that
|
|
|
179 returns a pair of the form (STRING . POS), where STRING is the string
|
|
|
180 used for matching and POS is the buffer position after which text
|
|
|
181 should be replaced with a template.")
|
|
|
182
|
|
|
183 (defvar tempo-user-elements nil
|
|
|
184 "Element handlers for user-defined elements.
|
|
|
185 A list of symbols which are bound to functions that take one argument.
|
|
|
186 This function should return somthing to be sent to `tempo-insert' if
|
|
|
187 it recognizes the argument, and NIL otherwise")
|
|
|
188
|
|
|
189 (defvar tempo-named-insertions nil
|
|
|
190 "Temporary storage for named insertions")
|
|
|
191
|
|
|
192 (defvar tempo-region-start (make-marker)
|
|
|
193 "Region start when inserting around the region")
|
|
|
194
|
|
|
195 (defvar tempo-region-stop (make-marker)
|
|
|
196 "Region stop when inserting around the region")
|
|
|
197
|
|
|
198 ;; Make some variables local to every buffer
|
|
|
199
|
|
|
200 (make-variable-buffer-local 'tempo-marks)
|
|
|
201 (make-variable-buffer-local 'tempo-local-tags)
|
|
|
202 (make-variable-buffer-local 'tempo-match-finder)
|
|
|
203 (make-variable-buffer-local 'tempo-collection)
|
|
|
204 (make-variable-buffer-local 'tempo-dirty-collection)
|
|
|
205
|
|
|
206 ;;; Functions
|
|
|
207
|
|
|
208 ;;; First some useful functions and macros
|
|
|
209
|
|
|
210 (defun tempo-mapc (fun lst)
|
|
|
211 (if (null lst) nil
|
|
|
212 (funcall fun (car lst))
|
|
|
213 (tempo-mapc fun (cdr lst))))
|
|
|
214
|
|
|
215 (defmacro tempo-dolist (il &rest forms)
|
|
|
216 (let ((i (car il))
|
|
|
217 (l (car (cdr il))))
|
|
|
218 (list 'tempo-mapc
|
|
|
219 (list 'function (append (list 'lambda
|
|
|
220 (list i))
|
|
|
221 forms))
|
|
|
222 (car (cdr il)))))
|
|
|
223 (put 'tempo-dolist 'lisp-indent-function 1)
|
|
|
224
|
|
|
225 ;;
|
|
|
226 ;; tempo-define-template
|
|
|
227
|
|
|
228 (defun tempo-define-template (name elements &optional tag documentation taglist)
|
|
|
229 "Define a template.
|
|
|
230 This function creates a template variable `tempo-template-NAME' and an
|
|
|
231 interactive function `tempo-template-NAME' that inserts the template
|
|
|
232 at the point. The created function is returned.
|
|
|
233
|
|
|
234 NAME is a string that contains the name of the template, ELEMENTS is a
|
|
|
235 list of elements in the template, TAG is the tag used for completion,
|
|
|
236 DOCUMENTATION is the documentation string for the insertion command
|
|
|
237 created, and TAGLIST (a symbol) is the tag list that TAG (if provided)
|
|
|
238 should be added to). If TAGLIST is nil and TAG is non-nil, TAG is
|
|
|
239 added to `tempo-tags'
|
|
|
240
|
|
|
241 The elements in ELEMENTS can be of several types:
|
|
|
242
|
|
|
243 - A string. It is sent to the hooks in `tempo-insert-string-functions',
|
|
|
244 and the result is inserted.
|
|
|
245 - The symbol 'p. This position is saved in `tempo-marks'.
|
|
|
246 - The symbol 'r. If `tempo-insert' is called with ON-REGION non-nil
|
|
|
247 the current region is placed here. Otherwise it works like 'p.
|
|
|
248 - (p PROMPT <NAME> <NOINSERT>) If `tempo-interactive' is non-nil, the
|
|
|
249 user is prompted in the minbuffer with PROMPT for a string to be
|
|
|
250 inserted. If the optional parameter NAME is non-nil, the text is
|
|
|
251 saved for later insertion with the `s' tag. If there already is
|
|
|
252 something saved under NAME that value is used instead and no
|
|
|
253 prompting is made. If NOINSERT is provided and non-nil, nothing is
|
|
|
254 inserted, but text is still saved when a NAME is provided. For
|
|
|
255 clarity, the symbol 'noinsert should be used as argument.
|
|
|
256 - (P PROMPT <NAME> <NOINSERT>) Works just like the previous tag, but
|
|
|
257 forces tempo-interactive to be true.
|
|
|
258 - (r PROMPT <NAME> <NOINSERT>) like the previous, but if
|
|
|
259 `tempo-interactive' is nil and `tempo-insert' is called with
|
|
|
260 ON-REGION non-nil, the current region is placed here. This usually
|
|
|
261 happens when you call the template function with a prefix argument.
|
|
|
262 - (s NAME) Inserts text previously read with the (p ..) construct.
|
|
|
263 Finds the insertion saved under NAME and inserts it. Acts like 'p
|
|
|
264 if tempo-interactive is nil.
|
|
|
265 - '& If there is only whitespace between the line start and point,
|
|
|
266 nothing happens. Otherwise a newline is inserted.
|
|
|
267 - '% If there is only whitespace between point and end-of-line
|
|
|
268 nothing happens. Otherwise a newline is inserted.
|
|
|
269 - 'n inserts a newline.
|
|
|
270 - '> The line is indented using `indent-according-to-mode'. Note that
|
|
|
271 you often should place this item after the text you want on the
|
|
|
272 line.
|
|
|
273 - 'r> Like r, but it also indents the region.
|
|
|
274 - 'n> Inserts a newline and indents line.
|
|
|
275 - 'o Like '% but leaves the point before the newline.
|
|
|
276 - nil. It is ignored.
|
|
|
277 - Anything else. It is evaluated and the result is treated as an
|
|
|
278 element to be inserted. One additional tag is useful for these
|
|
|
279 cases. If an expression returns a list '(l foo bar), the elements
|
|
|
280 after 'l will be inserted according to the usual rules. This makes
|
|
|
281 it possible to return several elements from one expression."
|
|
|
282
|
|
|
283 (let* ((template-name (intern (concat "tempo-template-"
|
|
|
284 name)))
|
|
|
285 (command-name template-name))
|
|
|
286 (set template-name elements)
|
|
|
287 (fset command-name (list 'lambda (list '&optional 'arg)
|
|
|
288 (or documentation
|
|
|
289 (concat "Insert a " name "."))
|
|
|
290 (list 'interactive "*P")
|
|
|
291 (list 'tempo-insert-template (list 'quote
|
|
|
292 template-name)
|
|
|
293 (list 'if 'tempo-insert-region
|
|
|
294 (list 'not 'arg) 'arg))))
|
|
|
295 (and tag
|
|
|
296 (tempo-add-tag tag template-name taglist))
|
|
|
297 command-name))
|
|
|
298
|
|
|
299 ;;;
|
|
|
300 ;;; tempo-insert-template
|
|
|
301
|
|
|
302 (defun tempo-insert-template (template on-region)
|
|
|
303 "Insert a template.
|
|
|
304 TEMPLATE is the template to be inserted. If ON-REGION is non-nil the
|
|
|
305 `r' elements are replaced with the current region. In Transient Mark
|
|
|
306 mode, ON-REGION is ignored and assumed true if the region is active."
|
|
|
307 (unwind-protect
|
|
|
308 (progn
|
|
|
309 (if (or (and (boundp 'transient-mark-mode) ; For Emacs
|
|
|
310 transient-mark-mode
|
|
|
311 mark-active)
|
|
|
312 (and (boundp 'zmacs-regions) ; For XEmacs
|
|
|
313 zmacs-regions (mark)))
|
|
|
314 (setq on-region t))
|
|
|
315 (and on-region
|
|
|
316 (set-marker tempo-region-start (min (mark) (point)))
|
|
|
317 (set-marker tempo-region-stop (max (mark) (point))))
|
|
|
318 (if on-region
|
|
|
319 (goto-char tempo-region-start))
|
|
|
320 (save-excursion
|
|
|
321 (tempo-insert-mark (point-marker))
|
|
|
322 (mapcar (function (lambda (elt)
|
|
|
323 (tempo-insert elt on-region)))
|
|
|
324 (symbol-value template))
|
|
|
325 (tempo-insert-mark (point-marker)))
|
|
|
326 (tempo-forward-mark))
|
|
|
327 (tempo-forget-insertions)
|
|
|
328 ;; Should I check for zmacs here too???
|
|
|
329 (and (boundp 'transient-mark-mode)
|
|
|
330 transient-mark-mode
|
|
|
331 (deactivate-mark))))
|
|
|
332
|
|
|
333 ;;;
|
|
|
334 ;;; tempo-insert
|
|
|
335
|
|
|
336 (defun tempo-insert (element on-region)
|
|
|
337 "Insert a template element.
|
|
|
338 Insert one element from a template. If ON-REGION is non-nil the `r'
|
|
|
339 elements are replaced with the current region.
|
|
|
340
|
|
|
341 See documentation for `tempo-define-template' for the kind of elements
|
|
|
342 possible."
|
|
|
343 (cond ((stringp element) (tempo-process-and-insert-string element))
|
|
|
344 ((and (consp element)
|
|
|
345 (eq (car element) 'p)) (tempo-insert-prompt-compat
|
|
|
346 (cdr element)))
|
|
|
347 ((and (consp element)
|
|
|
348 (eq (car element) 'P)) (let ((tempo-interactive t))
|
|
|
349 (tempo-insert-prompt-compat
|
|
|
350 (cdr element))))
|
|
|
351 ;;; ((and (consp element)
|
|
|
352 ;;; (eq (car element) 'v)) (tempo-save-named
|
|
|
353 ;;; (nth 1 element)
|
|
|
354 ;;; nil
|
|
|
355 ;;; (nth 2 element)))
|
|
|
356 ((and (consp element)
|
|
|
357 (eq (car element) 'r)) (if on-region
|
|
|
358 (goto-char tempo-region-stop)
|
|
|
359 (tempo-insert-prompt-compat
|
|
|
360 (cdr element))))
|
|
|
361 ((and (consp element)
|
|
|
362 (eq (car element) 's)) (tempo-insert-named (car (cdr element))))
|
|
|
363 ((and (consp element)
|
|
|
364 (eq (car element) 'l)) (mapcar (function
|
|
|
365 (lambda (elt)
|
|
|
366 (tempo-insert elt on-region)))
|
|
|
367 (cdr element)))
|
|
|
368 ((eq element 'p) (tempo-insert-mark (point-marker)))
|
|
|
369 ((eq element 'r) (if on-region
|
|
|
370 (goto-char tempo-region-stop)
|
|
|
371 (tempo-insert-mark (point-marker))))
|
|
|
372 ((eq element 'r>) (if on-region
|
|
|
373 (progn
|
|
|
374 (goto-char tempo-region-stop)
|
|
|
375 (indent-region (mark) (point) nil))
|
|
|
376 (tempo-insert-mark (point-marker))))
|
|
|
377 ((eq element '>) (indent-according-to-mode))
|
|
|
378 ((eq element '&) (if (not (or (= (current-column) 0)
|
|
|
379 (save-excursion
|
|
|
380 (re-search-backward
|
|
|
381 "^\\s-*\\=" nil t))))
|
|
|
382 (insert "\n")))
|
|
|
383 ((eq element '%) (if (not (or (eolp)
|
|
|
384 (save-excursion
|
|
|
385 (re-search-forward
|
|
|
386 "\\=\\s-*$" nil t))))
|
|
|
387 (insert "\n")))
|
|
|
388 ((eq element 'n) (insert "\n"))
|
|
|
389 ((eq element 'n>) (insert "\n") (indent-according-to-mode))
|
|
|
390 ;; Bug: If the 'o is the first element in a template, strange
|
|
|
391 ;; things can happen when the template is inserted at the
|
|
|
392 ;; beginning of a line.
|
|
|
393 ((eq element 'o) (if (not (or on-region
|
|
|
394 (eolp)
|
|
|
395 (save-excursion
|
|
|
396 (re-search-forward
|
|
|
397 "\\=\\s-*$" nil t))))
|
|
|
398 (open-line 1)))
|
|
|
399 ((null element))
|
|
|
400 (t (tempo-insert (or (tempo-is-user-element element)
|
|
|
401 (eval element))
|
|
|
402 on-region))))
|
|
|
403
|
|
|
404 ;;;
|
|
|
405 ;;; tempo-insert-prompt
|
|
|
406
|
|
|
407 (defun tempo-insert-prompt-compat (prompt)
|
|
|
408 "Compatibility hack for tempo-insert-prompt.
|
|
|
409 PROMPT can be either a prompt string, or a list of arguments to
|
|
|
410 tempo-insert-prompt, or nil."
|
|
|
411 (if (consp prompt) ; not NIL either
|
|
|
412 (apply 'tempo-insert-prompt prompt)
|
|
|
413 (tempo-insert-prompt prompt)))
|
|
|
414
|
|
|
415 (defun tempo-insert-prompt (prompt &optional save-name no-insert)
|
|
|
416 "Prompt for a text string and insert it in the current buffer.
|
|
|
417 If the variable `tempo-interactive' is non-nil the user is prompted
|
|
|
418 for a string in the minibuffer, which is then inserted in the current
|
|
|
419 buffer. If `tempo-interactive' is nil, the current point is placed on
|
|
|
420 `tempo-mark'.
|
|
|
421
|
|
|
422 PROMPT is the prompt string, SAVE-NAME is a name to save the inserted
|
|
|
423 text under. If the optional argument NO-INSERT is non-nil, no text i
|
|
|
424 inserted. This can be useful when there is a SAVE-NAME.
|
|
|
425
|
|
|
426 If there already is a value for SAVE-NAME, it is used and the user is
|
|
|
427 never prompted."
|
|
|
428 (let (insertion
|
|
|
429 (previous (and save-name
|
|
|
430 (tempo-lookup-named save-name))))
|
|
|
431 (cond
|
|
|
432 ;; Insert previous value, unless no-insert is non-nil
|
|
|
433 ((and previous
|
|
|
434 (not no-insert))
|
|
|
435 (tempo-insert-named save-name)) ; A double lookup here, but who
|
|
|
436 ; cares
|
|
|
437 ;; If no-insert is non-nil, don't insert the previous value. Just
|
|
|
438 ;; keep it
|
|
|
439 (previous
|
|
|
440 nil)
|
|
|
441 ;; No previous value. Prompt or insert mark
|
|
|
442 (tempo-interactive
|
|
|
443 (if (not (stringp prompt))
|
|
|
444 (error "tempo: The prompt (%s) is not a string" prompt))
|
|
|
445 (setq insertion (read-string prompt))
|
|
|
446 (or no-insert
|
|
|
447 (insert insertion))
|
|
|
448 (if save-name
|
|
|
449 (tempo-save-named save-name insertion)))
|
|
|
450 (t
|
|
|
451 (tempo-insert-mark (point-marker))))))
|
|
|
452
|
|
|
453 ;;;
|
|
|
454 ;;; tempo-is-user-element
|
|
|
455
|
|
|
456 (defun tempo-is-user-element (element)
|
|
|
457 "Tries all the user-defined element handlers in
|
|
|
458 `tempo-user-elements'"
|
|
|
459 ;; Sigh... I need (some list)
|
|
|
460 (catch 'found
|
|
|
461 (mapcar (function (lambda (handler)
|
|
|
462 (let ((result (funcall handler element)))
|
|
|
463 (if result (throw 'found result)))))
|
|
|
464 tempo-user-elements)
|
|
|
465 (throw 'found nil)))
|
|
|
466
|
|
|
467 ;;;
|
|
|
468 ;;; tempo-forget-insertions
|
|
|
469
|
|
|
470 (defun tempo-forget-insertions ()
|
|
|
471 "Forget all the saved named insertions."
|
|
|
472 (setq tempo-named-insertions nil))
|
|
|
473
|
|
|
474 ;;;
|
|
|
475 ;;; tempo-save-named
|
|
|
476
|
|
|
477 (defun tempo-save-named (name data) ; Had an optional prompt for 'v
|
|
|
478 "Save some data for later insertion
|
|
|
479 The contents of DATA is saved under the name NAME.
|
|
|
480
|
|
|
481 The data can later be retrieved with `tempo-lookup-named'.
|
|
|
482
|
|
|
483 This function returns nil, so it can be used in a template without
|
|
|
484 inserting anything."
|
|
|
485 (setq tempo-named-insertions
|
|
|
486 (cons (cons name data)
|
|
|
487 tempo-named-insertions))
|
|
|
488 nil)
|
|
|
489
|
|
|
490 ;;;
|
|
|
491 ;;; tempo-lookup-named
|
|
|
492
|
|
|
493 (defun tempo-lookup-named (name)
|
|
|
494 "Lookup some saved data under the name NAME.
|
|
|
495 Returns the data if NAME was found, and nil otherwise."
|
|
|
496 (cdr (assq name tempo-named-insertions)))
|
|
|
497
|
|
|
498 ;;;
|
|
|
499 ;;; tempo-insert-named
|
|
|
500
|
|
|
501 (defun tempo-insert-named (name)
|
|
|
502 "Insert the previous insertion saved under a named specified in NAME.
|
|
|
503 If there is no such name saved, a tempo mark is inserted.
|
|
|
504
|
|
|
505 Note that if the data is a string, it will not be run through the string
|
|
|
506 processor."
|
|
|
507 (let* ((insertion (tempo-lookup-named name)))
|
|
|
508 (cond ((null insertion)
|
|
|
509 (tempo-insert-mark (point-marker)))
|
|
|
510 ((stringp insertion)
|
|
|
511 (insert insertion))
|
|
|
512 (t
|
|
|
513 (tempo-insert insertion nil)))))
|
|
|
514
|
|
|
515
|
|
|
516 ;;;
|
|
|
517 ;;; tempo-process-and-insert-string
|
|
|
518
|
|
|
519 (defun tempo-process-and-insert-string (string)
|
|
|
520 "Insert a string from a template.
|
|
|
521 Run a string through the preprocessors in `tempo-insert-string-functions'
|
|
|
522 and insert the results."
|
|
|
523 (cond ((null tempo-insert-string-functions)
|
|
|
524 nil)
|
|
|
525 ((symbolp tempo-insert-string-functions)
|
|
|
526 (setq string
|
|
|
527 (funcall tempo-insert-string-functions string)))
|
|
|
528 ((listp tempo-insert-string-functions)
|
|
|
529 (tempo-dolist (fn tempo-insert-string-functions)
|
|
|
530 (setq string (funcall fn string))))
|
|
|
531 (t
|
|
|
532 (error "Bogus value in tempo-insert-string-functions: %s"
|
|
|
533 tempo-insert-string-functions)))
|
|
|
534 (insert string))
|
|
|
535
|
|
|
536 ;;;
|
|
|
537 ;;; tempo-insert-mark
|
|
|
538
|
|
|
539 (defun tempo-insert-mark (mark)
|
|
|
540 "Insert a mark `tempo-marks' while keeping it sorted"
|
|
|
541 (cond ((null tempo-marks) (setq tempo-marks (list mark)))
|
|
|
542 ((< mark (car tempo-marks)) (setq tempo-marks (cons mark tempo-marks)))
|
|
|
543 (t (let ((lp tempo-marks))
|
|
|
544 (while (and (cdr lp)
|
|
|
545 (<= (car (cdr lp)) mark))
|
|
|
546 (setq lp (cdr lp)))
|
|
|
547 (if (not (= mark (car lp)))
|
|
|
548 (setcdr lp (cons mark (cdr lp))))))))
|
|
|
549
|
|
|
550 ;;;
|
|
|
551 ;;; tempo-forward-mark
|
|
|
552
|
|
|
553 (defun tempo-forward-mark ()
|
|
|
554 "Jump to the next mark in `tempo-forward-mark-list'."
|
|
|
555 (interactive)
|
|
|
556 (let ((next-mark (catch 'found
|
|
|
557 (mapcar
|
|
|
558 (function
|
|
|
559 (lambda (mark)
|
|
|
560 (if (< (point) mark)
|
|
|
561 (throw 'found mark))))
|
|
|
562 tempo-marks)
|
|
|
563 ;; return nil if not found
|
|
|
564 nil)))
|
|
|
565 (if next-mark
|
|
|
566 (goto-char next-mark))))
|
|
|
567
|
|
|
568 ;;;
|
|
|
569 ;;; tempo-backward-mark
|
|
|
570
|
|
|
571 (defun tempo-backward-mark ()
|
|
|
572 "Jump to the previous mark in `tempo-back-mark-list'."
|
|
|
573 (interactive)
|
|
|
574 (let ((prev-mark (catch 'found
|
|
|
575 (let (last)
|
|
|
576 (mapcar
|
|
|
577 (function
|
|
|
578 (lambda (mark)
|
|
|
579 (if (<= (point) mark)
|
|
|
580 (throw 'found last))
|
|
|
581 (setq last mark)))
|
|
|
582 tempo-marks)
|
|
|
583 last))))
|
|
|
584 (if prev-mark
|
|
|
585 (goto-char prev-mark))))
|
|
|
586
|
|
|
587 ;;;
|
|
|
588 ;;; tempo-add-tag
|
|
|
589
|
|
|
590 (defun tempo-add-tag (tag template &optional tag-list)
|
|
|
591 "Add a template tag.
|
|
|
592 Add the TAG, that should complete to TEMPLATE to the list in TAG-LIST,
|
|
|
593 or to `tempo-tags' if TAG-LIST is nil."
|
|
|
594
|
|
|
595 (interactive "sTag: \nCTemplate: ")
|
|
|
596 (if (null tag-list)
|
|
|
597 (setq tag-list 'tempo-tags))
|
|
|
598 (if (not (assoc tag (symbol-value tag-list)))
|
|
|
599 (set tag-list (cons (cons tag template) (symbol-value tag-list))))
|
|
|
600 (tempo-invalidate-collection))
|
|
|
601
|
|
|
602 ;;;
|
|
|
603 ;;; tempo-use-tag-list
|
|
|
604
|
|
|
605 (defun tempo-use-tag-list (tag-list &optional completion-function)
|
|
|
606 "Install TAG-LIST to be used for template completion in the current buffer.
|
|
|
607 TAG-LIST is a symbol whose variable value is a tag list created with
|
|
|
608 `tempo-add-tag'.
|
|
|
609
|
|
|
610 COMPLETION-FUNCTION is an obsolete option for specifyingis an optional
|
|
|
611 function or string that is used by `\\[tempo-complete-tag]' to find a
|
|
|
612 string to match the tag against. It has the same definition as the
|
|
|
613 variable `tempo-match-finder'. In this version, supplying a
|
|
|
614 COMPLETION-FUNCTION just sets `tempo-match-finder' locally."
|
|
|
615 (let ((old (assq tag-list tempo-local-tags)))
|
|
|
616 (if old
|
|
|
617 (setcdr old completion-function)
|
|
|
618 (setq tempo-local-tags (cons (cons tag-list completion-function)
|
|
|
619 tempo-local-tags))))
|
|
|
620 (if completion-function
|
|
|
621 (setq tempo-match-finder completion-function))
|
|
|
622 (tempo-invalidate-collection))
|
|
|
623
|
|
|
624 ;;;
|
|
|
625 ;;; tempo-invalidate-collection
|
|
|
626
|
|
|
627 (defun tempo-invalidate-collection ()
|
|
|
628 "Marks the tag collection as obsolete.
|
|
|
629 Whenever it is needed again it will be rebuilt."
|
|
|
630 (setq tempo-dirty-collection t))
|
|
|
631
|
|
|
632 ;;;
|
|
|
633 ;;; tempo-build-collection
|
|
|
634
|
|
|
635 (defun tempo-build-collection ()
|
|
|
636 "Build a collection of all the tags and return it.
|
|
|
637 If `tempo-dirty-collection' is NIL, the old collection is reused."
|
|
|
638 (prog1
|
|
|
639 (or (and (not tempo-dirty-collection)
|
|
|
640 tempo-collection)
|
|
|
641 (setq tempo-collection
|
|
|
642 (apply (function append)
|
|
|
643 (mapcar (function (lambda (tag-list)
|
|
|
644 ; If the format for
|
|
|
645 ; tempo-local-tags changes,
|
|
|
646 ; change this
|
|
|
647 (eval (car tag-list))))
|
|
|
648 tempo-local-tags))))
|
|
|
649 (setq tempo-dirty-collection nil)))
|
|
|
650
|
|
|
651 ;;;
|
|
|
652 ;;; tempo-find-match-string
|
|
|
653
|
|
|
654 (defun tempo-find-match-string (finder)
|
|
|
655 "Find a string to be matched against a tag list.
|
|
|
656 FINDER is a function or a string. Returns (STRING . POS), or nil
|
|
|
657 if no reasonable string is found."
|
|
|
658 (cond ((stringp finder)
|
|
|
659 (let (successful)
|
|
|
660 (save-excursion
|
|
|
661 (or (setq successful (re-search-backward finder nil t))
|
|
|
662 0))
|
|
|
663 (if successful
|
|
|
664 (cons (buffer-substring (match-beginning 1)
|
|
|
665 (match-end 1)) ; This seems to be a
|
|
|
666 ; bug in emacs
|
|
|
667 (match-beginning 1))
|
|
|
668 nil)))
|
|
|
669 (t
|
|
|
670 (funcall finder))))
|
|
|
671
|
|
|
672 ;;;
|
|
|
673 ;;; tempo-complete-tag
|
|
|
674
|
|
|
675 (defun tempo-complete-tag (&optional silent)
|
|
|
676 "Look for a tag and expand it.
|
|
|
677 All the tags in the tag lists in `tempo-local-tags'
|
|
|
678 (this includes `tempo-tags') are searched for a match for the text
|
|
|
679 before the point. The way the string to match for is determined can
|
|
|
680 be altered with the variable `tempo-match-finder'. If
|
|
|
681 `tempo-match-finder' returns nil, then the results are the same as
|
|
|
682 no match at all.
|
|
|
683
|
|
|
684 If a single match is found, the corresponding template is expanded in
|
|
|
685 place of the matching string.
|
|
|
686
|
|
|
687 If a partial completion or no match at all is found, and SILENT is
|
|
|
688 non-NIL, the function will give a signal.
|
|
|
689
|
|
|
690 If a partial completion is found and `tempo-show-completion-buffer' is
|
|
|
691 non-NIL, a buffer containing possible completions is displayed."
|
|
|
692
|
|
|
693 ;; This function may look like a hack, but this is how I want it to
|
|
|
694 ;; work.
|
|
|
695 (interactive "*")
|
|
|
696 (let* ((collection (tempo-build-collection))
|
|
|
697 (match-info (tempo-find-match-string tempo-match-finder))
|
|
|
698 (match-string (car match-info))
|
|
|
699 (match-start (cdr match-info))
|
|
|
700 (exact (assoc match-string collection))
|
|
|
701 (compl (or (car exact)
|
|
|
702 (and match-info (try-completion match-string collection)))))
|
|
|
703 (if compl (delete-region match-start (point)))
|
|
|
704 (cond ((null match-info) (or silent (ding)))
|
|
|
705 ((null compl) (or silent (ding)))
|
|
|
706 ((eq compl t) (tempo-insert-template
|
|
|
707 (cdr (assoc match-string
|
|
|
708 collection))
|
|
|
709 nil))
|
|
|
710 (t (if (setq exact (assoc compl collection))
|
|
|
711 (tempo-insert-template (cdr exact) nil)
|
|
|
712 (insert compl)
|
|
|
713 (or silent (ding))
|
|
|
714 (if tempo-show-completion-buffer
|
|
|
715 (tempo-display-completions match-string
|
|
|
716 collection)))))))
|
|
|
717
|
|
|
718
|
|
|
719 ;;;
|
|
|
720 ;;; tempo-display-completions
|
|
|
721
|
|
|
722 (defun tempo-display-completions (string tag-list)
|
|
|
723 "Show a buffer containing possible completions for STRING."
|
|
|
724 (if tempo-leave-completion-buffer
|
|
|
725 (with-output-to-temp-buffer "*Completions*"
|
|
|
726 (display-completion-list
|
|
|
727 (all-completions string tag-list)))
|
|
|
728 (save-window-excursion
|
|
|
729 (with-output-to-temp-buffer "*Completions*"
|
|
|
730 (display-completion-list
|
|
|
731 (all-completions string tag-list)))
|
|
|
732 (sit-for 32767))))
|
|
|
733
|
|
|
734 ;;;
|
|
|
735 ;;; tempo-expand-if-complete
|
|
|
736
|
|
|
737 (defun tempo-expand-if-complete ()
|
|
|
738 "Expand the tag before point if it is complete.
|
|
|
739 Returns non-nil if an expansion was made and nil otherwise.
|
|
|
740
|
|
|
741 This could as an example be used in a command that is bound to the
|
|
|
742 space bar, and looks something like this:
|
|
|
743
|
|
|
744 (defun tempo-space ()
|
|
|
745 (interactive \"*\")
|
|
|
746 (or (tempo-expand-if-complete)
|
|
|
747 (insert \" \")))"
|
|
|
748
|
|
|
749 (interactive "*")
|
|
|
750 (let* ((collection (tempo-build-collection))
|
|
|
751 (match-info (tempo-find-match-string tempo-match-finder))
|
|
|
752 (match-string (car match-info))
|
|
|
753 (match-start (cdr match-info))
|
|
|
754 (exact (assoc match-string collection)))
|
|
|
755 (if exact
|
|
|
756 (progn
|
|
|
757 (delete-region match-start (point))
|
|
|
758 (tempo-insert-template (cdr exact) nil)
|
|
|
759 t)
|
|
|
760 nil)))
|
|
|
761
|
|
|
762 (provide 'tempo)
|
|
|
763
|
|
|
764 ;;; tempo.el ends here
|
