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60370d40 | 1 | ;;; select.el --- lisp portion of standard selection support |
3109d63f | 2 | |
30764597 | 3 | ;; Maintainer: FSF |
3109d63f ER |
4 | ;; Keywords: internal |
5 | ||
c90f2757 | 6 | ;; Copyright (C) 1993, 1994, 2001, 2002, 2003, 2004, |
d7a0267c | 7 | ;; 2005, 2006, 2007 Free Software Foundation, Inc. |
3109d63f ER |
8 | ;; Based partially on earlier release by Lucid. |
9 | ||
10 | ;; This file is part of GNU Emacs. | |
11 | ||
12 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
13 | ;; it under the terms of the GNU General Public License as published by | |
b4aa6026 | 14 | ;; the Free Software Foundation; either version 3, or (at your option) |
3109d63f ER |
15 | ;; any later version. |
16 | ||
17 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
18 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | ;; GNU General Public License for more details. | |
21 | ||
22 | ;; You should have received a copy of the GNU General Public License | |
b578f267 | 23 | ;; along with GNU Emacs; see the file COPYING. If not, write to the |
086add15 LK |
24 | ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
25 | ;; Boston, MA 02110-1301, USA. | |
3109d63f | 26 | |
60370d40 PJ |
27 | ;;; Commentary: |
28 | ||
3109d63f ER |
29 | ;;; Code: |
30 | ||
31 | ;; This is for temporary compatibility with pre-release Emacs 19. | |
31e1d920 | 32 | (defalias 'x-selection 'x-get-selection) |
3109d63f ER |
33 | (defun x-get-selection (&optional type data-type) |
34 | "Return the value of an X Windows selection. | |
47fb2723 | 35 | The argument TYPE (default `PRIMARY') says which selection, |
4029fd9a | 36 | and the argument DATA-TYPE (default `STRING') says |
76058c27 EZ |
37 | how to convert the data. |
38 | ||
15a24762 LT |
39 | TYPE may be any symbol \(but nil stands for `PRIMARY'). However, |
40 | only a few symbols are commonly used. They conventionally have | |
41 | all upper-case names. The most often used ones, in addition to | |
42 | `PRIMARY', are `SECONDARY' and `CLIPBOARD'. | |
43 | ||
76058c27 EZ |
44 | DATA-TYPE is usually `STRING', but can also be one of the symbols |
45 | in `selection-converter-alist', which see." | |
f147fd76 KH |
46 | (let ((data (x-get-selection-internal (or type 'PRIMARY) |
47 | (or data-type 'STRING))) | |
48 | coding) | |
49 | (when (and (stringp data) | |
50 | (setq data-type (get-text-property 0 'foreign-selection data))) | |
51 | (setq coding (if (eq data-type 'UTF8_STRING) | |
52 | 'utf-8 | |
53 | (or next-selection-coding-system | |
54 | selection-coding-system)) | |
55 | data (decode-coding-string data coding)) | |
56 | (put-text-property 0 (length data) 'foreign-selection data-type data)) | |
57 | data)) | |
3109d63f ER |
58 | |
59 | (defun x-get-clipboard () | |
60 | "Return text pasted to the clipboard." | |
61 | (x-get-selection-internal 'CLIPBOARD 'STRING)) | |
62 | ||
63 | (defun x-set-selection (type data) | |
64 | "Make an X Windows selection of type TYPE and value DATA. | |
15a24762 LT |
65 | The argument TYPE (nil means `PRIMARY') says which selection, and |
66 | DATA specifies the contents. TYPE must be a symbol. \(It can also | |
67 | be a string, which stands for the symbol with that name, but this | |
68 | is considered obsolete.) DATA may be a string, a symbol, an | |
69 | integer (or a cons of two integers or list of two integers). | |
5038b790 RS |
70 | |
71 | The selection may also be a cons of two markers pointing to the same buffer, | |
47fb2723 | 72 | or an overlay. In these cases, the selection is considered to be the text |
5038b790 RS |
73 | between the markers *at whatever time the selection is examined*. |
74 | Thus, editing done in the buffer after you specify the selection | |
75 | can alter the effective value of the selection. | |
76 | ||
77 | The data may also be a vector of valid non-vector selection values. | |
78 | ||
15a24762 LT |
79 | The return value is DATA. |
80 | ||
81 | Interactively, this command sets the primary selection. Without | |
82 | prefix argument, it reads the selection in the minibuffer. With | |
83 | prefix argument, it uses the text of the region as the selection value ." | |
3109d63f | 84 | (interactive (if (not current-prefix-arg) |
5038b790 | 85 | (list 'PRIMARY (read-string "Set text for pasting: ")) |
1b270b55 | 86 | (list 'PRIMARY (buffer-substring (region-beginning) (region-end))))) |
3109d63f ER |
87 | ;; This is for temporary compatibility with pre-release Emacs 19. |
88 | (if (stringp type) | |
89 | (setq type (intern type))) | |
90 | (or (x-valid-simple-selection-p data) | |
91 | (and (vectorp data) | |
92 | (let ((valid t) | |
93 | (i (1- (length data)))) | |
94 | (while (>= i 0) | |
95 | (or (x-valid-simple-selection-p (aref data i)) | |
96 | (setq valid nil)) | |
97 | (setq i (1- i))) | |
98 | valid)) | |
99 | (signal 'error (list "invalid selection" data))) | |
100 | (or type (setq type 'PRIMARY)) | |
101 | (if data | |
102 | (x-own-selection-internal type data) | |
103 | (x-disown-selection-internal type)) | |
104 | data) | |
105 | ||
106 | (defun x-valid-simple-selection-p (data) | |
107 | (or (stringp data) | |
108 | (symbolp data) | |
109 | (integerp data) | |
110 | (and (consp data) | |
111 | (integerp (car data)) | |
112 | (or (integerp (cdr data)) | |
113 | (and (consp (cdr data)) | |
114 | (integerp (car (cdr data)))))) | |
6eac0de6 | 115 | (overlayp data) |
3109d63f ER |
116 | (and (consp data) |
117 | (markerp (car data)) | |
118 | (markerp (cdr data)) | |
119 | (marker-buffer (car data)) | |
120 | (marker-buffer (cdr data)) | |
121 | (eq (marker-buffer (car data)) | |
122 | (marker-buffer (cdr data))) | |
123 | (buffer-name (marker-buffer (car data))) | |
124 | (buffer-name (marker-buffer (cdr data)))))) | |
125 | \f | |
126 | ;;; Cut Buffer support | |
127 | ||
128 | (defun x-get-cut-buffer (&optional which-one) | |
8157ac14 PJ |
129 | "Returns the value of one of the 8 X server cut-buffers. |
130 | Optional arg WHICH-ONE should be a number from 0 to 7, defaulting to 0. | |
3109d63f ER |
131 | Cut buffers are considered obsolete; you should use selections instead." |
132 | (x-get-cut-buffer-internal | |
133 | (if which-one | |
134 | (aref [CUT_BUFFER0 CUT_BUFFER1 CUT_BUFFER2 CUT_BUFFER3 | |
135 | CUT_BUFFER4 CUT_BUFFER5 CUT_BUFFER6 CUT_BUFFER7] | |
136 | which-one) | |
137 | 'CUT_BUFFER0))) | |
138 | ||
39479f7e | 139 | (defun x-set-cut-buffer (string &optional push) |
3109d63f | 140 | "Store STRING into the X server's primary cut buffer. |
39479f7e | 141 | If PUSH is non-nil, also rotate the cut buffers: |
47fb2723 | 142 | this means the previous value of the primary cut buffer moves to the second |
3109d63f ER |
143 | cut buffer, and the second to the third, and so on (there are 8 buffers.) |
144 | Cut buffers are considered obsolete; you should use selections instead." | |
47fb2723 | 145 | (or (stringp string) (signal 'wrong-type-argument (list 'string string))) |
39479f7e RS |
146 | (if push |
147 | (x-rotate-cut-buffers-internal 1)) | |
3109d63f ER |
148 | (x-store-cut-buffer-internal 'CUT_BUFFER0 string)) |
149 | ||
150 | \f | |
151 | ;;; Functions to convert the selection into various other selection types. | |
152 | ;;; Every selection type that Emacs handles is implemented this way, except | |
153 | ;;; for TIMESTAMP, which is a special case. | |
154 | ||
1df04e22 JD |
155 | (eval-when-compile (require 'ccl)) |
156 | ||
157 | (define-ccl-program ccl-check-utf-8 | |
158 | '(0 | |
159 | ((r0 = 1) | |
160 | (loop | |
161 | (read-if (r1 < #x80) (repeat) | |
162 | ((r0 = 0) | |
163 | (if (r1 < #xC2) (end)) | |
164 | (read r2) | |
165 | (if ((r2 & #xC0) != #x80) (end)) | |
166 | (if (r1 < #xE0) ((r0 = 1) (repeat))) | |
167 | (read r2) | |
168 | (if ((r2 & #xC0) != #x80) (end)) | |
169 | (if (r1 < #xF0) ((r0 = 1) (repeat))) | |
170 | (read r2) | |
171 | (if ((r2 & #xC0) != #x80) (end)) | |
172 | (if (r1 < #xF8) ((r0 = 1) (repeat))) | |
173 | (read r2) | |
174 | (if ((r2 & #xC0) != #x80) (end)) | |
175 | (if (r1 == #xF8) ((r0 = 1) (repeat))) | |
176 | (end)))))) | |
177 | "Check if the input unibyte string is a valid UTF-8 sequence or not. | |
178 | If it is valid, set the register `r0' to 1, else set it to 0.") | |
179 | ||
180 | (defun string-utf-8-p (string) | |
4837b516 | 181 | "Return non-nil if STRING is a unibyte string of valid UTF-8 sequence." |
1df04e22 JD |
182 | (if (or (not (stringp string)) |
183 | (multibyte-string-p string)) | |
184 | (error "Not a unibyte string: %s" string)) | |
185 | (let ((status (make-vector 9 0))) | |
186 | (ccl-execute-on-string ccl-check-utf-8 status string) | |
187 | (= (aref status 0) 1))) | |
188 | ||
189 | ||
3109d63f | 190 | (defun xselect-convert-to-string (selection type value) |
eb1416b9 KH |
191 | (let (str coding) |
192 | ;; Get the actual string from VALUE. | |
193 | (cond ((stringp value) | |
194 | (setq str value)) | |
195 | ||
196 | ((overlayp value) | |
197 | (save-excursion | |
198 | (or (buffer-name (overlay-buffer value)) | |
199 | (error "selection is in a killed buffer")) | |
200 | (set-buffer (overlay-buffer value)) | |
201 | (setq str (buffer-substring (overlay-start value) | |
202 | (overlay-end value))))) | |
203 | ((and (consp value) | |
204 | (markerp (car value)) | |
205 | (markerp (cdr value))) | |
206 | (or (eq (marker-buffer (car value)) (marker-buffer (cdr value))) | |
207 | (signal 'error | |
208 | (list "markers must be in the same buffer" | |
209 | (car value) (cdr value)))) | |
210 | (save-excursion | |
211 | (set-buffer (or (marker-buffer (car value)) | |
212 | (error "selection is in a killed buffer"))) | |
213 | (setq str (buffer-substring (car value) (cdr value)))))) | |
214 | ||
215 | (when str | |
216 | ;; If TYPE is nil, this is a local request, thus return STR as | |
217 | ;; is. Otherwise, encode STR. | |
218 | (if (not type) | |
219 | str | |
220 | (setq coding (or next-selection-coding-system selection-coding-system)) | |
221 | (if coding | |
222 | (setq coding (coding-system-base coding)) | |
223 | (setq coding 'raw-text)) | |
deae888e | 224 | (let ((inhibit-read-only t)) |
b36ee2a6 | 225 | ;; Suppress producing escape sequences for compositions. |
deae888e LT |
226 | (remove-text-properties 0 (length str) '(composition nil) str) |
227 | (cond | |
228 | ((eq type 'TEXT) | |
229 | (if (not (multibyte-string-p str)) | |
230 | ;; Don't have to encode unibyte string. | |
231 | (setq type 'STRING) | |
232 | ;; If STR contains only ASCII, Latin-1, and raw bytes, | |
233 | ;; encode STR by iso-latin-1, and return it as type | |
234 | ;; `STRING'. Otherwise, encode STR by CODING. In that | |
235 | ;; case, the returing type depends on CODING. | |
236 | (let ((charsets (find-charset-string str))) | |
237 | (setq charsets | |
238 | (delq 'ascii | |
239 | (delq 'latin-iso8859-1 | |
240 | (delq 'eight-bit-control | |
241 | (delq 'eight-bit-graphic charsets))))) | |
242 | (if charsets | |
243 | (setq str (encode-coding-string str coding) | |
244 | type (if (memq coding '(compound-text | |
245 | compound-text-with-extensions)) | |
246 | 'COMPOUND_TEXT | |
247 | 'STRING)) | |
248 | (setq type 'STRING | |
249 | str (encode-coding-string str 'iso-latin-1)))))) | |
250 | ||
251 | ((eq type 'COMPOUND_TEXT) | |
252 | (setq str (encode-coding-string str coding))) | |
253 | ||
254 | ((eq type 'STRING) | |
255 | (if (memq coding '(compound-text | |
256 | compound-text-with-extensions)) | |
257 | (setq str (string-make-unibyte str)) | |
258 | (setq str (encode-coding-string str coding)))) | |
259 | ||
260 | ((eq type 'UTF8_STRING) | |
1df04e22 JD |
261 | (if (multibyte-string-p str) |
262 | (setq str (encode-coding-string str 'utf-8))) | |
263 | (if (not (string-utf-8-p str)) | |
264 | (setq str nil))) ;; Decline request as we don't have UTF-8 data. | |
deae888e LT |
265 | (t |
266 | (error "Unknow selection type: %S" type)) | |
267 | ))) | |
eb1416b9 KH |
268 | |
269 | (setq next-selection-coding-system nil) | |
270 | (cons type str)))) | |
271 | ||
3109d63f ER |
272 | |
273 | (defun xselect-convert-to-length (selection type value) | |
274 | (let ((value | |
275 | (cond ((stringp value) | |
276 | (length value)) | |
6eac0de6 RS |
277 | ((overlayp value) |
278 | (abs (- (overlay-end value) (overlay-start value)))) | |
3109d63f ER |
279 | ((and (consp value) |
280 | (markerp (car value)) | |
281 | (markerp (cdr value))) | |
282 | (or (eq (marker-buffer (car value)) | |
283 | (marker-buffer (cdr value))) | |
284 | (signal 'error | |
285 | (list "markers must be in the same buffer" | |
286 | (car value) (cdr value)))) | |
287 | (abs (- (car value) (cdr value))))))) | |
288 | (if value ; force it to be in 32-bit format. | |
289 | (cons (ash value -16) (logand value 65535)) | |
290 | nil))) | |
291 | ||
292 | (defun xselect-convert-to-targets (selection type value) | |
293 | ;; return a vector of atoms, but remove duplicates first. | |
294 | (let* ((all (cons 'TIMESTAMP (mapcar 'car selection-converter-alist))) | |
295 | (rest all)) | |
296 | (while rest | |
297 | (cond ((memq (car rest) (cdr rest)) | |
298 | (setcdr rest (delq (car rest) (cdr rest)))) | |
299 | ((eq (car (cdr rest)) '_EMACS_INTERNAL) ; shh, it's a secret | |
300 | (setcdr rest (cdr (cdr rest)))) | |
301 | (t | |
302 | (setq rest (cdr rest))))) | |
303 | (apply 'vector all))) | |
304 | ||
305 | (defun xselect-convert-to-delete (selection type value) | |
306 | (x-disown-selection-internal selection) | |
307 | ;; A return value of nil means that we do not know how to do this conversion, | |
308 | ;; and replies with an "error". A return value of NULL means that we have | |
309 | ;; done the conversion (and any side-effects) but have no value to return. | |
310 | 'NULL) | |
311 | ||
312 | (defun xselect-convert-to-filename (selection type value) | |
6eac0de6 RS |
313 | (cond ((overlayp value) |
314 | (buffer-file-name (or (overlay-buffer value) | |
315 | (error "selection is in a killed buffer")))) | |
3109d63f ER |
316 | ((and (consp value) |
317 | (markerp (car value)) | |
318 | (markerp (cdr value))) | |
319 | (buffer-file-name (or (marker-buffer (car value)) | |
320 | (error "selection is in a killed buffer")))) | |
321 | (t nil))) | |
322 | ||
323 | (defun xselect-convert-to-charpos (selection type value) | |
324 | (let (a b tmp) | |
6eac0de6 RS |
325 | (cond ((cond ((overlayp value) |
326 | (setq a (overlay-start value) | |
327 | b (overlay-end value))) | |
3109d63f ER |
328 | ((and (consp value) |
329 | (markerp (car value)) | |
330 | (markerp (cdr value))) | |
331 | (setq a (car value) | |
332 | b (cdr value)))) | |
333 | (setq a (1- a) b (1- b)) ; zero-based | |
334 | (if (< b a) (setq tmp a a b b tmp)) | |
335 | (cons 'SPAN | |
336 | (vector (cons (ash a -16) (logand a 65535)) | |
337 | (cons (ash b -16) (logand b 65535)))))))) | |
338 | ||
339 | (defun xselect-convert-to-lineno (selection type value) | |
340 | (let (a b buf tmp) | |
341 | (cond ((cond ((and (consp value) | |
342 | (markerp (car value)) | |
343 | (markerp (cdr value))) | |
344 | (setq a (marker-position (car value)) | |
345 | b (marker-position (cdr value)) | |
346 | buf (marker-buffer (car value)))) | |
6eac0de6 RS |
347 | ((overlayp value) |
348 | (setq buf (overlay-buffer value) | |
349 | a (overlay-start value) | |
350 | b (overlay-end value))) | |
3109d63f ER |
351 | ) |
352 | (save-excursion | |
353 | (set-buffer buf) | |
354 | (setq a (count-lines 1 a) | |
355 | b (count-lines 1 b))) | |
356 | (if (< b a) (setq tmp a a b b tmp)) | |
357 | (cons 'SPAN | |
358 | (vector (cons (ash a -16) (logand a 65535)) | |
359 | (cons (ash b -16) (logand b 65535)))))))) | |
360 | ||
361 | (defun xselect-convert-to-colno (selection type value) | |
362 | (let (a b buf tmp) | |
363 | (cond ((cond ((and (consp value) | |
364 | (markerp (car value)) | |
365 | (markerp (cdr value))) | |
366 | (setq a (car value) | |
367 | b (cdr value) | |
368 | buf (marker-buffer a))) | |
6eac0de6 RS |
369 | ((overlayp value) |
370 | (setq buf (overlay-buffer value) | |
371 | a (overlay-start value) | |
372 | b (overlay-end value))) | |
3109d63f ER |
373 | ) |
374 | (save-excursion | |
375 | (set-buffer buf) | |
376 | (goto-char a) | |
377 | (setq a (current-column)) | |
378 | (goto-char b) | |
379 | (setq b (current-column))) | |
380 | (if (< b a) (setq tmp a a b b tmp)) | |
381 | (cons 'SPAN | |
382 | (vector (cons (ash a -16) (logand a 65535)) | |
383 | (cons (ash b -16) (logand b 65535)))))))) | |
384 | ||
385 | (defun xselect-convert-to-os (selection type size) | |
386 | (symbol-name system-type)) | |
387 | ||
388 | (defun xselect-convert-to-host (selection type size) | |
389 | (system-name)) | |
390 | ||
391 | (defun xselect-convert-to-user (selection type size) | |
392 | (user-full-name)) | |
393 | ||
394 | (defun xselect-convert-to-class (selection type size) | |
47a31c6b PJ |
395 | "Convert selection to class. |
396 | This function returns the string \"Emacs\"." | |
7e773fb4 | 397 | "Emacs") |
3109d63f ER |
398 | |
399 | ;; We do not try to determine the name Emacs was invoked with, | |
400 | ;; because it is not clean for a program's behavior to depend on that. | |
401 | (defun xselect-convert-to-name (selection type size) | |
47a31c6b PJ |
402 | "Convert selection to name. |
403 | This function returns the string \"emacs\"." | |
3109d63f ER |
404 | "emacs") |
405 | ||
406 | (defun xselect-convert-to-integer (selection type value) | |
407 | (and (integerp value) | |
408 | (cons (ash value -16) (logand value 65535)))) | |
409 | ||
410 | (defun xselect-convert-to-atom (selection type value) | |
411 | (and (symbolp value) value)) | |
412 | ||
413 | (defun xselect-convert-to-identity (selection type value) ; used internally | |
414 | (vector value)) | |
415 | ||
416 | (setq selection-converter-alist | |
417 | '((TEXT . xselect-convert-to-string) | |
79501c8d | 418 | (COMPOUND_TEXT . xselect-convert-to-string) |
3109d63f | 419 | (STRING . xselect-convert-to-string) |
eb1416b9 | 420 | (UTF8_STRING . xselect-convert-to-string) |
3109d63f ER |
421 | (TARGETS . xselect-convert-to-targets) |
422 | (LENGTH . xselect-convert-to-length) | |
423 | (DELETE . xselect-convert-to-delete) | |
424 | (FILE_NAME . xselect-convert-to-filename) | |
425 | (CHARACTER_POSITION . xselect-convert-to-charpos) | |
426 | (LINE_NUMBER . xselect-convert-to-lineno) | |
427 | (COLUMN_NUMBER . xselect-convert-to-colno) | |
428 | (OWNER_OS . xselect-convert-to-os) | |
429 | (HOST_NAME . xselect-convert-to-host) | |
430 | (USER . xselect-convert-to-user) | |
431 | (CLASS . xselect-convert-to-class) | |
432 | (NAME . xselect-convert-to-name) | |
433 | (ATOM . xselect-convert-to-atom) | |
434 | (INTEGER . xselect-convert-to-integer) | |
435 | (_EMACS_INTERNAL . xselect-convert-to-identity) | |
436 | )) | |
437 | ||
438 | (provide 'select) | |
439 | ||
ab5796a9 | 440 | ;;; arch-tag: bb634f97-8a3b-4b0a-b940-f6e09982328c |
60370d40 | 441 | ;;; select.el ends here |