Commit | Line | Data |
---|---|---|
b46a6a83 | 1 | /* Selection processing for Emacs on the Microsoft Windows API. |
e9bffc61 | 2 | |
ba318903 | 3 | Copyright (C) 1993-1994, 2001-2014 Free Software Foundation, Inc. |
41a48e45 | 4 | |
3b7ad313 EN |
5 | This file is part of GNU Emacs. |
6 | ||
9ec0b715 | 7 | GNU Emacs is free software: you can redistribute it and/or modify |
3b7ad313 | 8 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
9 | the Free Software Foundation, either version 3 of the License, or |
10 | (at your option) any later version. | |
3b7ad313 EN |
11 | |
12 | GNU Emacs is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
9ec0b715 | 18 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
ee78dc32 | 19 | |
52c7f9ee JR |
20 | /* Written by Kevin Gallo, Benjamin Riefenstahl */ |
21 | ||
22 | ||
23 | /* | |
24 | * Notes on usage of selection-coding-system and | |
25 | * next-selection-coding-system on MS Windows: | |
26 | * | |
27 | * The selection coding system variables apply only to the version of | |
28 | * the clipboard data that is closest in type, i.e. when a 16-bit | |
29 | * Unicode coding system is given, they apply to he Unicode clipboard | |
30 | * (CF_UNICODETEXT), when a well-known console codepage is given, they | |
31 | * apply to the console version of the clipboard data (CF_OEMTEXT), | |
32 | * else they apply to the normal 8-bit text clipboard (CF_TEXT). | |
b56ceb92 | 33 | * |
52c7f9ee JR |
34 | * When pasting (getting data from the OS), the clipboard format that |
35 | * matches the {next-}selection-coding-system is retrieved. If | |
36 | * Unicode is requested, but not available, 8-bit text (CF_TEXT) is | |
37 | * used. In all other cases the OS will transparently convert | |
38 | * formats, so no other fallback is needed. | |
39 | * | |
40 | * When copying or cutting (sending data to the OS), the data is | |
41 | * announced and stored internally, but only actually rendered on | |
fa463103 | 42 | * request. The requestor determines the format provided. The |
52c7f9ee JR |
43 | * {next-}selection-coding-system is only used, when its corresponding |
44 | * clipboard type matches the type requested. | |
45 | * | |
46 | * Scenarios to use the facilities for customizing the selection | |
47 | * coding system are: | |
b56ceb92 | 48 | * |
52c7f9ee JR |
49 | * ;; Generally use KOI8-R instead of the russian MS codepage for |
50 | * ;; the 8-bit clipboard. | |
51 | * (set-selection-coding-system 'koi8-r-dos) | |
b56ceb92 | 52 | * |
52c7f9ee | 53 | * Or |
b56ceb92 | 54 | * |
52c7f9ee JR |
55 | * ;; Create a special clipboard copy function that uses codepage |
56 | * ;; 1253 (Greek) to copy Greek text to a specific non-Unicode | |
57 | * ;; application. | |
58 | * (defun greek-copy (beg end) | |
59 | * (interactive "r") | |
60 | * (set-next-selection-coding-system 'cp1253-dos) | |
61 | * (copy-region-as-kill beg end)) | |
62 | * (global-set-key "\C-c\C-c" 'greek-copy) | |
63 | */ | |
64 | ||
65 | /* | |
66 | * Ideas for further directions: | |
67 | * | |
68 | * The encoding and decoding routines could be moved to Lisp code | |
69 | * similar to how xselect.c does it (using well-known routine names | |
70 | * for the delayed rendering). If the definition of which clipboard | |
71 | * types should be supported is also moved to Lisp, functionality | |
72 | * could be expanded to CF_HTML, CF_RTF and maybe other types. | |
73 | */ | |
b56ceb92 | 74 | |
ee78dc32 GV |
75 | #include <config.h> |
76 | #include "lisp.h" | |
501199a3 | 77 | #include "w32common.h" /* os_subtype */ |
d8715cdf | 78 | #include "w32term.h" /* for all of the w32 includes */ |
c1af190b | 79 | #include "keyboard.h" |
ee78dc32 | 80 | #include "blockinput.h" |
bbb059f3 AI |
81 | #include "charset.h" |
82 | #include "coding.h" | |
f7d05dc4 | 83 | #include "composite.h" |
ee78dc32 | 84 | |
0fda9b75 DC |
85 | #ifdef CYGWIN |
86 | #include <string.h> | |
87 | #include <stdio.h> | |
88 | #define _memccpy memccpy | |
89 | #endif | |
52c7f9ee JR |
90 | |
91 | static HGLOBAL convert_to_handle_as_ascii (void); | |
92 | static HGLOBAL convert_to_handle_as_coded (Lisp_Object coding_system); | |
93 | static Lisp_Object render (Lisp_Object oformat); | |
94 | static Lisp_Object render_locale (void); | |
b56ceb92 JB |
95 | static Lisp_Object render_all (Lisp_Object ignore); |
96 | static void run_protected (Lisp_Object (*code) (Lisp_Object), Lisp_Object arg); | |
52c7f9ee JR |
97 | static Lisp_Object lisp_error_handler (Lisp_Object error); |
98 | static LRESULT CALLBACK owner_callback (HWND win, UINT msg, | |
99 | WPARAM wp, LPARAM lp); | |
100 | static HWND create_owner (void); | |
101 | ||
102 | static void setup_config (void); | |
103 | static BOOL WINAPI enum_locale_callback (/*const*/ char* loc_string); | |
104 | static UINT cp_from_locale (LCID lcid, UINT format); | |
105 | static Lisp_Object coding_from_cp (UINT codepage); | |
9a38f8d5 KH |
106 | static Lisp_Object validate_coding_system (Lisp_Object coding_system); |
107 | static void setup_windows_coding_system (Lisp_Object coding_system, | |
108 | struct coding_system * coding); | |
52c7f9ee JR |
109 | |
110 | ||
111 | /* A remnant from X11: Symbol for the CLIPBORD selection type. Other | |
112 | selections are not used on Windows, so we don't need symbols for | |
113 | PRIMARY and SECONDARY. */ | |
9aa94bd5 KH |
114 | Lisp_Object QCLIPBOARD; |
115 | ||
52c7f9ee JR |
116 | /* Internal pseudo-constants, initialized in globals_of_w32select() |
117 | based on current system parameters. */ | |
118 | static LCID DEFAULT_LCID; | |
119 | static UINT ANSICP, OEMCP; | |
120 | static Lisp_Object QUNICODE, QANSICP, QOEMCP; | |
121 | ||
122 | /* A hidden window just for the clipboard management. */ | |
123 | static HWND clipboard_owner; | |
124 | /* A flag to tell WM_DESTROYCLIPBOARD who is to blame this time (just | |
125 | checking GetClipboardOwner() doesn't work, sadly). */ | |
126 | static int modifying_clipboard = 0; | |
127 | ||
128 | /* Configured transfer parameters, based on the last inspection of | |
129 | selection-coding-system. */ | |
130 | static Lisp_Object cfg_coding_system; | |
131 | static UINT cfg_codepage; | |
132 | static LCID cfg_lcid; | |
133 | static UINT cfg_clipboard_type; | |
134 | ||
135 | /* The current state for delayed rendering. */ | |
136 | static Lisp_Object current_text; | |
137 | static Lisp_Object current_coding_system; | |
138 | static int current_requires_encoding, current_num_nls; | |
139 | static UINT current_clipboard_type; | |
140 | static LCID current_lcid; | |
141 | ||
142 | #if TRACE | |
143 | #define ONTRACE(stmt) stmt | |
144 | #else | |
145 | #define ONTRACE(stmt) /*stmt*/ | |
146 | #endif | |
147 | ||
148 | ||
149 | /* This function assumes that there is no multibyte character in | |
150 | current_text, so we can short-cut encoding. */ | |
151 | ||
152 | static HGLOBAL | |
153 | convert_to_handle_as_ascii (void) | |
ee78dc32 | 154 | { |
52c7f9ee JR |
155 | HGLOBAL htext = NULL; |
156 | int nbytes; | |
157 | int truelen; | |
158 | unsigned char *src; | |
159 | unsigned char *dst; | |
41a48e45 | 160 | |
52c7f9ee | 161 | ONTRACE (fprintf (stderr, "convert_to_handle_as_ascii\n")); |
41a48e45 | 162 | |
52c7f9ee JR |
163 | nbytes = SBYTES (current_text) + 1; |
164 | src = SDATA (current_text); | |
41a48e45 | 165 | |
52c7f9ee JR |
166 | /* We need to add to the size the number of LF chars where we have |
167 | to insert CR chars (the standard CF_TEXT clipboard format uses | |
168 | CRLF line endings, while Emacs uses just LF internally). */ | |
41a48e45 | 169 | |
52c7f9ee JR |
170 | truelen = nbytes + current_num_nls; |
171 | ||
172 | if ((htext = GlobalAlloc (GMEM_MOVEABLE | GMEM_DDESHARE, truelen)) == NULL) | |
173 | return NULL; | |
41a48e45 | 174 | |
52c7f9ee JR |
175 | if ((dst = (unsigned char *) GlobalLock (htext)) == NULL) |
176 | { | |
177 | GlobalFree (htext); | |
178 | return NULL; | |
179 | } | |
180 | ||
181 | /* convert to CRLF line endings expected by clipboard */ | |
182 | while (1) | |
183 | { | |
184 | unsigned char *next; | |
185 | /* copy next line or remaining bytes including '\0' */ | |
186 | next = _memccpy (dst, src, '\n', nbytes); | |
187 | if (next) | |
188 | { | |
189 | /* copied one line ending with '\n' */ | |
190 | int copied = next - dst; | |
191 | nbytes -= copied; | |
192 | src += copied; | |
193 | /* insert '\r' before '\n' */ | |
194 | next[-1] = '\r'; | |
195 | next[0] = '\n'; | |
196 | dst = next + 1; | |
197 | } | |
198 | else | |
199 | /* copied remaining partial line -> now finished */ | |
200 | break; | |
201 | } | |
202 | ||
203 | GlobalUnlock (htext); | |
204 | ||
205 | return htext; | |
ee78dc32 GV |
206 | } |
207 | ||
52c7f9ee JR |
208 | /* This function assumes that there are multibyte or NUL characters in |
209 | current_text, or that we need to construct Unicode. It runs the | |
210 | text through the encoding machinery. */ | |
211 | ||
212 | static HGLOBAL | |
213 | convert_to_handle_as_coded (Lisp_Object coding_system) | |
ee78dc32 | 214 | { |
9a38f8d5 | 215 | HGLOBAL htext; |
52c7f9ee | 216 | unsigned char *dst = NULL; |
52c7f9ee | 217 | struct coding_system coding; |
52c7f9ee | 218 | |
b56ceb92 | 219 | ONTRACE (fprintf (stderr, "convert_to_handle_as_coded: %s\n", |
52c7f9ee JR |
220 | SDATA (SYMBOL_NAME (coding_system)))); |
221 | ||
9a38f8d5 | 222 | setup_windows_coding_system (coding_system, &coding); |
ed3751c8 | 223 | coding.dst_bytes = SBYTES (current_text) * 2; |
23f86fce | 224 | coding.destination = xmalloc (coding.dst_bytes); |
9a38f8d5 KH |
225 | encode_coding_object (&coding, current_text, 0, 0, |
226 | SCHARS (current_text), SBYTES (current_text), Qnil); | |
41a48e45 | 227 | |
9a38f8d5 | 228 | htext = GlobalAlloc (GMEM_MOVEABLE | GMEM_DDESHARE, coding.produced +2); |
41a48e45 | 229 | |
52c7f9ee JR |
230 | if (htext != NULL) |
231 | dst = (unsigned char *) GlobalLock (htext); | |
41a48e45 | 232 | |
52c7f9ee JR |
233 | if (dst != NULL) |
234 | { | |
9a38f8d5 | 235 | memcpy (dst, coding.destination, coding.produced); |
52c7f9ee JR |
236 | /* Add the string terminator. Add two NULs in case we are |
237 | producing Unicode here. */ | |
238 | dst[coding.produced] = dst[coding.produced+1] = '\0'; | |
52c7f9ee | 239 | |
9a38f8d5 | 240 | GlobalUnlock (htext); |
52c7f9ee JR |
241 | } |
242 | ||
9a38f8d5 KH |
243 | xfree (coding.destination); |
244 | ||
52c7f9ee | 245 | return htext; |
ee78dc32 GV |
246 | } |
247 | ||
52c7f9ee JR |
248 | static Lisp_Object |
249 | render (Lisp_Object oformat) | |
ee78dc32 | 250 | { |
52c7f9ee JR |
251 | HGLOBAL htext = NULL; |
252 | UINT format = XFASTINT (oformat); | |
253 | ||
254 | ONTRACE (fprintf (stderr, "render\n")); | |
255 | ||
256 | if (NILP (current_text)) | |
257 | return Qnil; | |
258 | ||
259 | if (current_requires_encoding || format == CF_UNICODETEXT) | |
260 | { | |
261 | if (format == current_clipboard_type) | |
262 | htext = convert_to_handle_as_coded (current_coding_system); | |
263 | else | |
264 | switch (format) | |
265 | { | |
266 | case CF_UNICODETEXT: | |
267 | htext = convert_to_handle_as_coded (QUNICODE); | |
268 | break; | |
269 | case CF_TEXT: | |
270 | case CF_OEMTEXT: | |
271 | { | |
272 | Lisp_Object cs; | |
273 | cs = coding_from_cp (cp_from_locale (current_lcid, format)); | |
274 | htext = convert_to_handle_as_coded (cs); | |
275 | break; | |
276 | } | |
277 | } | |
278 | } | |
279 | else | |
280 | htext = convert_to_handle_as_ascii (); | |
281 | ||
282 | ONTRACE (fprintf (stderr, "render: htext = 0x%08X\n", (unsigned) htext)); | |
283 | ||
284 | if (htext == NULL) | |
285 | return Qnil; | |
286 | ||
287 | if (SetClipboardData (format, htext) == NULL) | |
288 | { | |
ed3751c8 | 289 | GlobalFree (htext); |
52c7f9ee JR |
290 | return Qnil; |
291 | } | |
292 | ||
293 | return Qt; | |
ee78dc32 GV |
294 | } |
295 | ||
52c7f9ee JR |
296 | static Lisp_Object |
297 | render_locale (void) | |
ee78dc32 | 298 | { |
52c7f9ee JR |
299 | HANDLE hlocale = NULL; |
300 | LCID * lcid_ptr; | |
301 | ||
302 | ONTRACE (fprintf (stderr, "render_locale\n")); | |
303 | ||
304 | if (current_lcid == LOCALE_NEUTRAL || current_lcid == DEFAULT_LCID) | |
305 | return Qt; | |
306 | ||
307 | hlocale = GlobalAlloc (GMEM_MOVEABLE | GMEM_DDESHARE, sizeof (current_lcid)); | |
308 | if (hlocale == NULL) | |
309 | return Qnil; | |
310 | ||
311 | if ((lcid_ptr = (LCID *) GlobalLock (hlocale)) == NULL) | |
312 | { | |
ed3751c8 | 313 | GlobalFree (hlocale); |
52c7f9ee JR |
314 | return Qnil; |
315 | } | |
316 | ||
317 | *lcid_ptr = current_lcid; | |
318 | GlobalUnlock (hlocale); | |
319 | ||
320 | if (SetClipboardData (CF_LOCALE, hlocale) == NULL) | |
321 | { | |
ed3751c8 | 322 | GlobalFree (hlocale); |
52c7f9ee JR |
323 | return Qnil; |
324 | } | |
325 | ||
326 | return Qt; | |
327 | } | |
328 | ||
329 | /* At the end of the program, we want to ensure that our clipboard | |
330 | data survives us. This code will do that. */ | |
331 | ||
332 | static Lisp_Object | |
b56ceb92 | 333 | render_all (Lisp_Object ignore) |
52c7f9ee JR |
334 | { |
335 | ONTRACE (fprintf (stderr, "render_all\n")); | |
336 | ||
337 | /* According to the docs we should not call OpenClipboard() here, | |
338 | but testing on W2K and working code in other projects shows that | |
339 | it is actually necessary. */ | |
340 | ||
341 | OpenClipboard (NULL); | |
342 | ||
fa463103 | 343 | /* There is no useful means to report errors here, there are none |
52c7f9ee JR |
344 | expected anyway, and even if there were errors, they wouldn't do |
345 | any harm. So we just go ahead and do what has to be done without | |
346 | bothering with error handling. */ | |
347 | ||
348 | ++modifying_clipboard; | |
349 | EmptyClipboard (); | |
350 | --modifying_clipboard; | |
351 | ||
352 | /* For text formats that we don't render here, the OS can use its | |
353 | own translation rules instead, so we don't really need to offer | |
354 | everything. To minimize memory consumption we cover three | |
355 | possible situations based on our primary format as detected from | |
356 | selection-coding-system (see setup_config()): | |
357 | ||
358 | - Post CF_TEXT only. Let the OS convert to CF_OEMTEXT and the OS | |
359 | (on NT) or the application (on 9x/Me) convert to | |
360 | CF_UNICODETEXT. | |
361 | ||
362 | - Post CF_OEMTEXT only. Similar automatic conversions happen as | |
363 | for CF_TEXT. | |
364 | ||
365 | - Post CF_UNICODETEXT + CF_TEXT. 9x itself ignores | |
366 | CF_UNICODETEXT, even though some applications can still handle | |
367 | it. | |
368 | ||
369 | Note 1: We render the less capable CF_TEXT *before* the more | |
370 | capable CF_UNICODETEXT, to prevent clobbering through automatic | |
371 | conversions, just in case. | |
372 | ||
373 | Note 2: We could check os_subtype here and only render the | |
374 | additional CF_TEXT on 9x/Me. But OTOH with | |
375 | current_clipboard_type == CF_UNICODETEXT we don't involve the | |
376 | automatic conversions anywhere else, so to get consistent | |
377 | results, we probably don't want to rely on it here either. */ | |
378 | ||
ed3751c8 | 379 | render_locale (); |
52c7f9ee JR |
380 | |
381 | if (current_clipboard_type == CF_UNICODETEXT) | |
382 | render (make_number (CF_TEXT)); | |
383 | render (make_number (current_clipboard_type)); | |
384 | ||
385 | CloseClipboard (); | |
386 | ||
387 | return Qnil; | |
388 | } | |
389 | ||
390 | static void | |
b56ceb92 | 391 | run_protected (Lisp_Object (*code) (Lisp_Object), Lisp_Object arg) |
52c7f9ee JR |
392 | { |
393 | /* FIXME: This works but it doesn't feel right. Too much fiddling | |
394 | with global variables and calling strange looking functions. Is | |
395 | this really the right way to run Lisp callbacks? */ | |
396 | ||
52c7f9ee | 397 | int owfi; |
41a48e45 | 398 | |
4d7e6e51 | 399 | block_input (); |
41a48e45 | 400 | |
1088b922 | 401 | /* Fsignal calls emacs_abort () if it sees that waiting_for_input is |
52c7f9ee JR |
402 | set. */ |
403 | owfi = waiting_for_input; | |
404 | waiting_for_input = 0; | |
405 | ||
406 | internal_condition_case_1 (code, arg, Qt, lisp_error_handler); | |
407 | ||
408 | waiting_for_input = owfi; | |
41a48e45 | 409 | |
4d7e6e51 | 410 | unblock_input (); |
52c7f9ee | 411 | } |
41a48e45 | 412 | |
52c7f9ee JR |
413 | static Lisp_Object |
414 | lisp_error_handler (Lisp_Object error) | |
415 | { | |
416 | Vsignaling_function = Qnil; | |
417 | cmd_error_internal (error, "Error in delayed clipboard rendering: "); | |
418 | Vinhibit_quit = Qt; | |
419 | return Qt; | |
ee78dc32 GV |
420 | } |
421 | ||
ee78dc32 | 422 | |
52c7f9ee JR |
423 | static LRESULT CALLBACK |
424 | owner_callback (HWND win, UINT msg, WPARAM wp, LPARAM lp) | |
ee78dc32 | 425 | { |
52c7f9ee JR |
426 | switch (msg) |
427 | { | |
428 | case WM_RENDERFORMAT: | |
429 | ONTRACE (fprintf (stderr, "WM_RENDERFORMAT\n")); | |
430 | run_protected (render, make_number (wp)); | |
431 | return 0; | |
432 | ||
433 | case WM_RENDERALLFORMATS: | |
434 | ONTRACE (fprintf (stderr, "WM_RENDERALLFORMATS\n")); | |
435 | run_protected (render_all, Qnil); | |
436 | return 0; | |
437 | ||
438 | case WM_DESTROYCLIPBOARD: | |
439 | if (!modifying_clipboard) | |
440 | { | |
441 | ONTRACE (fprintf (stderr, "WM_DESTROYCLIPBOARD (other)\n")); | |
442 | current_text = Qnil; | |
443 | current_coding_system = Qnil; | |
444 | } | |
445 | else | |
446 | { | |
447 | ONTRACE (fprintf (stderr, "WM_DESTROYCLIPBOARD (self)\n")); | |
448 | } | |
449 | return 0; | |
0ece9ef6 | 450 | |
52c7f9ee JR |
451 | case WM_DESTROY: |
452 | if (win == clipboard_owner) | |
453 | clipboard_owner = NULL; | |
454 | break; | |
455 | } | |
41a48e45 | 456 | |
52c7f9ee JR |
457 | return DefWindowProc (win, msg, wp, lp); |
458 | } | |
41a48e45 | 459 | |
52c7f9ee JR |
460 | static HWND |
461 | create_owner (void) | |
462 | { | |
463 | static const char CLASSNAME[] = "Emacs Clipboard"; | |
464 | WNDCLASS wc; | |
69cddef0 | 465 | |
52c7f9ee JR |
466 | memset (&wc, 0, sizeof (wc)); |
467 | wc.lpszClassName = CLASSNAME; | |
468 | wc.lpfnWndProc = owner_callback; | |
469 | RegisterClass (&wc); | |
470 | ||
471 | return CreateWindow (CLASSNAME, CLASSNAME, 0, 0, 0, 0, 0, NULL, NULL, | |
472 | NULL, NULL); | |
473 | } | |
474 | ||
475 | /* Called on exit by term_ntproc() in w32.c */ | |
476 | ||
477 | void | |
478 | term_w32select (void) | |
479 | { | |
480 | /* This is needed to trigger WM_RENDERALLFORMATS. */ | |
481 | if (clipboard_owner != NULL) | |
16b22fef EZ |
482 | { |
483 | DestroyWindow (clipboard_owner); | |
484 | clipboard_owner = NULL; | |
485 | } | |
52c7f9ee | 486 | } |
0ece9ef6 | 487 | |
52c7f9ee JR |
488 | static void |
489 | setup_config (void) | |
490 | { | |
491 | const char *coding_name; | |
492 | const char *cp; | |
493 | char *end; | |
494 | int slen; | |
9a38f8d5 KH |
495 | Lisp_Object coding_system; |
496 | Lisp_Object dos_coding_system; | |
52c7f9ee JR |
497 | |
498 | CHECK_SYMBOL (Vselection_coding_system); | |
499 | ||
9a38f8d5 | 500 | coding_system = NILP (Vnext_selection_coding_system) ? |
52c7f9ee | 501 | Vselection_coding_system : Vnext_selection_coding_system; |
9a38f8d5 KH |
502 | |
503 | dos_coding_system = validate_coding_system (coding_system); | |
504 | if (NILP (dos_coding_system)) | |
505 | Fsignal (Qerror, | |
506 | list2 (build_string ("Coding system is invalid or doesn't have " | |
507 | "an eol variant for dos line ends"), | |
508 | coding_system)); | |
509 | ||
510 | /* Check if we have it cached */ | |
52c7f9ee | 511 | if (!NILP (cfg_coding_system) |
9a38f8d5 | 512 | && EQ (cfg_coding_system, dos_coding_system)) |
52c7f9ee | 513 | return; |
9a38f8d5 | 514 | cfg_coding_system = dos_coding_system; |
b56ceb92 | 515 | |
52c7f9ee JR |
516 | /* Set some sensible fallbacks */ |
517 | cfg_codepage = ANSICP; | |
518 | cfg_lcid = LOCALE_NEUTRAL; | |
519 | cfg_clipboard_type = CF_TEXT; | |
520 | ||
521 | /* Interpret the coding system symbol name */ | |
522 | coding_name = SDATA (SYMBOL_NAME (cfg_coding_system)); | |
523 | ||
524 | /* "(.*-)?utf-16.*" -> CF_UNICODETEXT */ | |
525 | cp = strstr (coding_name, "utf-16"); | |
526 | if (cp != NULL && (cp == coding_name || cp[-1] == '-')) | |
0ece9ef6 | 527 | { |
52c7f9ee JR |
528 | cfg_clipboard_type = CF_UNICODETEXT; |
529 | return; | |
0ece9ef6 | 530 | } |
69cddef0 | 531 | |
52c7f9ee JR |
532 | /* "cp[0-9]+.*" or "windows-[0-9]+.*" -> CF_TEXT or CF_OEMTEXT */ |
533 | slen = strlen (coding_name); | |
534 | if (slen >= 4 && coding_name[0] == 'c' && coding_name[1] == 'p') | |
535 | cp = coding_name + 2; | |
536 | else if (slen >= 10 && memcmp (coding_name, "windows-", 8) == 0) | |
537 | cp = coding_name + 8; | |
538 | else | |
539 | return; | |
540 | ||
541 | end = (char*)cp; | |
542 | cfg_codepage = strtol (cp, &end, 10); | |
543 | ||
544 | /* Error return from strtol() or number of digits < 2 -> Restore the | |
545 | default and drop it. */ | |
546 | if (cfg_codepage == 0 || (end-cp) < 2 ) | |
547 | { | |
548 | cfg_codepage = ANSICP; | |
549 | return; | |
550 | } | |
bbb059f3 | 551 | |
52c7f9ee JR |
552 | /* Is it the currently active system default? */ |
553 | if (cfg_codepage == ANSICP) | |
554 | { | |
555 | /* cfg_clipboard_type = CF_TEXT; */ | |
556 | return; | |
557 | } | |
558 | if (cfg_codepage == OEMCP) | |
559 | { | |
560 | cfg_clipboard_type = CF_OEMTEXT; | |
561 | return; | |
562 | } | |
69cddef0 | 563 | |
52c7f9ee JR |
564 | /* Else determine a suitable locale the hard way. */ |
565 | EnumSystemLocales (enum_locale_callback, LCID_INSTALLED); | |
566 | } | |
69cddef0 | 567 | |
52c7f9ee JR |
568 | static BOOL WINAPI |
569 | enum_locale_callback (/*const*/ char* loc_string) | |
570 | { | |
571 | LCID lcid; | |
572 | UINT codepage; | |
69cddef0 | 573 | |
52c7f9ee | 574 | lcid = strtoul (loc_string, NULL, 16); |
bbb059f3 | 575 | |
52c7f9ee JR |
576 | /* Is the wanted codepage the "ANSI" codepage for this locale? */ |
577 | codepage = cp_from_locale (lcid, CF_TEXT); | |
578 | if (codepage == cfg_codepage) | |
579 | { | |
580 | cfg_lcid = lcid; | |
581 | cfg_clipboard_type = CF_TEXT; | |
582 | return FALSE; /* Stop enumeration */ | |
583 | } | |
b56ceb92 | 584 | |
52c7f9ee JR |
585 | /* Is the wanted codepage the OEM codepage for this locale? */ |
586 | codepage = cp_from_locale (lcid, CF_OEMTEXT); | |
587 | if (codepage == cfg_codepage) | |
588 | { | |
589 | cfg_lcid = lcid; | |
590 | cfg_clipboard_type = CF_OEMTEXT; | |
591 | return FALSE; /* Stop enumeration */ | |
592 | } | |
41a48e45 | 593 | |
52c7f9ee JR |
594 | return TRUE; /* Continue enumeration */ |
595 | } | |
41a48e45 | 596 | |
52c7f9ee JR |
597 | static UINT |
598 | cp_from_locale (LCID lcid, UINT format) | |
599 | { | |
600 | char buffer[20] = ""; | |
601 | UINT variant, cp; | |
0108f679 | 602 | |
52c7f9ee JR |
603 | variant = |
604 | format == CF_TEXT ? LOCALE_IDEFAULTANSICODEPAGE : LOCALE_IDEFAULTCODEPAGE; | |
bbb059f3 | 605 | |
52c7f9ee JR |
606 | GetLocaleInfo (lcid, variant, buffer, sizeof (buffer)); |
607 | cp = strtoul (buffer, NULL, 10); | |
bf2133d7 | 608 | |
52c7f9ee JR |
609 | if (cp == CP_ACP) |
610 | return ANSICP; | |
611 | else if (cp == CP_OEMCP) | |
612 | return OEMCP; | |
613 | else | |
614 | return cp; | |
615 | } | |
bf2133d7 | 616 | |
52c7f9ee JR |
617 | static Lisp_Object |
618 | coding_from_cp (UINT codepage) | |
619 | { | |
620 | char buffer[30]; | |
621 | sprintf (buffer, "cp%d-dos", (int) codepage); | |
622 | return intern (buffer); | |
9a38f8d5 KH |
623 | /* We don't need to check that this coding system actually exists |
624 | right here, because that is done later for all coding systems | |
625 | used, regardless of where they originate. */ | |
ee78dc32 | 626 | } |
06466d9a | 627 | |
9a38f8d5 KH |
628 | static Lisp_Object |
629 | validate_coding_system (Lisp_Object coding_system) | |
630 | { | |
631 | Lisp_Object eol_type; | |
632 | ||
633 | /* Make sure the input is valid. */ | |
634 | if (NILP (Fcoding_system_p (coding_system))) | |
635 | return Qnil; | |
636 | ||
637 | /* Make sure we use a DOS coding system as mandated by the system | |
638 | specs. */ | |
639 | eol_type = Fcoding_system_eol_type (coding_system); | |
640 | ||
641 | /* Already a DOS coding system? */ | |
642 | if (EQ (eol_type, make_number (1))) | |
643 | return coding_system; | |
644 | ||
645 | /* Get EOL_TYPE vector of the base of CODING_SYSTEM. */ | |
646 | if (!VECTORP (eol_type)) | |
647 | { | |
648 | eol_type = Fcoding_system_eol_type (Fcoding_system_base (coding_system)); | |
649 | if (!VECTORP (eol_type)) | |
650 | return Qnil; | |
651 | } | |
652 | ||
653 | return AREF (eol_type, 1); | |
654 | } | |
655 | ||
656 | static void | |
657 | setup_windows_coding_system (Lisp_Object coding_system, | |
658 | struct coding_system * coding) | |
659 | { | |
660 | memset (coding, 0, sizeof (*coding)); | |
661 | setup_coding_system (coding_system, coding); | |
662 | ||
663 | /* Unset CODING_ANNOTATE_COMPOSITION_MASK. Previous code had | |
664 | comments about crashes in encode_coding_iso2022 trying to | |
665 | dereference a null pointer when composition was on. Selection | |
666 | data should not contain any composition sequence on Windows. | |
667 | ||
668 | CODING_ANNOTATION_MASK also includes | |
669 | CODING_ANNOTATE_DIRECTION_MASK and CODING_ANNOTATE_CHARSET_MASK, | |
670 | which both apply to ISO6429 only. We don't know if these really | |
671 | need to be unset on Windows, but it probably doesn't hurt | |
672 | either. */ | |
673 | coding->mode &= ~CODING_ANNOTATION_MASK; | |
674 | coding->mode |= CODING_MODE_LAST_BLOCK | CODING_MODE_SAFE_ENCODING; | |
675 | } | |
676 | ||
677 | ||
06466d9a | 678 | |
33f09670 JR |
679 | DEFUN ("w32-set-clipboard-data", Fw32_set_clipboard_data, |
680 | Sw32_set_clipboard_data, 1, 2, 0, | |
681 | doc: /* This sets the clipboard data to the given text. */) | |
5842a27b | 682 | (Lisp_Object string, Lisp_Object ignored) |
ee78dc32 GV |
683 | { |
684 | BOOL ok = TRUE; | |
69cddef0 | 685 | int nbytes; |
69cddef0 GV |
686 | unsigned char *src; |
687 | unsigned char *dst; | |
52c7f9ee | 688 | unsigned char *end; |
06466d9a | 689 | |
52c7f9ee JR |
690 | /* This parameter used to be the current frame, but we don't use |
691 | that any more. */ | |
692 | (void) ignored; | |
41a48e45 | 693 | |
b7826503 | 694 | CHECK_STRING (string); |
41a48e45 | 695 | |
52c7f9ee | 696 | setup_config (); |
41a48e45 | 697 | |
52c7f9ee JR |
698 | current_text = string; |
699 | current_coding_system = cfg_coding_system; | |
700 | current_clipboard_type = cfg_clipboard_type; | |
701 | current_lcid = cfg_lcid; | |
702 | current_num_nls = 0; | |
703 | current_requires_encoding = 0; | |
b56ceb92 | 704 | |
4d7e6e51 | 705 | block_input (); |
69cddef0 | 706 | |
52c7f9ee JR |
707 | /* Check for non-ASCII characters. While we are at it, count the |
708 | number of LFs, so we know how many CRs we will have to add later | |
709 | (just in the case where we can use our internal ASCII rendering, | |
710 | see code and comment in convert_to_handle_as_ascii() above). */ | |
711 | nbytes = SBYTES (string); | |
d5db4077 | 712 | src = SDATA (string); |
0ece9ef6 | 713 | |
52c7f9ee | 714 | for (dst = src, end = src+nbytes; dst < end; dst++) |
0ece9ef6 | 715 | { |
52c7f9ee JR |
716 | if (*dst == '\n') |
717 | current_num_nls++; | |
718 | else if (*dst >= 0x80 || *dst == 0) | |
719 | { | |
720 | current_requires_encoding = 1; | |
721 | break; | |
722 | } | |
0ece9ef6 | 723 | } |
69cddef0 | 724 | |
52c7f9ee JR |
725 | if (!current_requires_encoding) |
726 | { | |
727 | /* If all we have is ASCII we don't need to pretend we offer | |
728 | anything fancy. */ | |
729 | current_coding_system = Qraw_text; | |
730 | current_clipboard_type = CF_TEXT; | |
731 | current_lcid = LOCALE_NEUTRAL; | |
732 | } | |
0108f679 | 733 | |
52c7f9ee | 734 | if (!OpenClipboard (clipboard_owner)) |
ee78dc32 | 735 | goto error; |
06466d9a | 736 | |
52c7f9ee JR |
737 | ++modifying_clipboard; |
738 | ok = EmptyClipboard (); | |
739 | --modifying_clipboard; | |
06466d9a | 740 | |
52c7f9ee JR |
741 | /* If we have something non-ASCII we may want to set a locale. We |
742 | do that directly (non-delayed), as it's just a small bit. */ | |
743 | if (ok) | |
ed3751c8 | 744 | ok = !NILP (render_locale ()); |
06466d9a | 745 | |
52c7f9ee JR |
746 | if (ok) |
747 | { | |
748 | if (clipboard_owner == NULL) | |
749 | { | |
750 | /* If for some reason we don't have a clipboard_owner, we | |
751 | just set the text format as chosen by the configuration | |
752 | and than forget about the whole thing. */ | |
ed3751c8 | 753 | ok = !NILP (render (make_number (current_clipboard_type))); |
52c7f9ee JR |
754 | current_text = Qnil; |
755 | current_coding_system = Qnil; | |
756 | } | |
757 | else | |
758 | { | |
759 | /* Advertise all supported formats so that whatever the | |
fa463103 | 760 | requestor chooses, only one encoding step needs to be |
52c7f9ee JR |
761 | made. This is intentionally different from what we do in |
762 | the handler for WM_RENDERALLFORMATS. */ | |
763 | SetClipboardData (CF_UNICODETEXT, NULL); | |
764 | SetClipboardData (CF_TEXT, NULL); | |
765 | SetClipboardData (CF_OEMTEXT, NULL); | |
766 | } | |
767 | } | |
41a48e45 | 768 | |
6383ca22 JR |
769 | CloseClipboard (); |
770 | ||
52c7f9ee JR |
771 | /* With delayed rendering we haven't really "used" this coding |
772 | system yet, and it's even unclear if we ever will. But this is a | |
773 | way to tell the upper level what we *would* use under ideal | |
774 | circumstances. | |
41a48e45 | 775 | |
52c7f9ee JR |
776 | We don't signal the actually used coding-system later when we |
777 | finally render, because that can happen at any time and we don't | |
778 | want to disturb the "foreground" action. */ | |
779 | if (ok) | |
780 | Vlast_coding_system_used = current_coding_system; | |
6383ca22 | 781 | |
52c7f9ee | 782 | Vnext_selection_coding_system = Qnil; |
ee79d1aa | 783 | |
ee78dc32 GV |
784 | if (ok) goto done; |
785 | ||
786 | error: | |
41a48e45 | 787 | |
ee78dc32 | 788 | ok = FALSE; |
52c7f9ee JR |
789 | current_text = Qnil; |
790 | current_coding_system = Qnil; | |
ee79d1aa | 791 | |
ee78dc32 | 792 | done: |
4d7e6e51 | 793 | unblock_input (); |
41a48e45 | 794 | |
ee78dc32 GV |
795 | return (ok ? string : Qnil); |
796 | } | |
797 | ||
52c7f9ee | 798 | |
33f09670 JR |
799 | DEFUN ("w32-get-clipboard-data", Fw32_get_clipboard_data, |
800 | Sw32_get_clipboard_data, 0, 1, 0, | |
801 | doc: /* This gets the clipboard data in text format. */) | |
5842a27b | 802 | (Lisp_Object ignored) |
ee78dc32 | 803 | { |
52c7f9ee | 804 | HGLOBAL htext; |
ee78dc32 | 805 | Lisp_Object ret = Qnil; |
52c7f9ee JR |
806 | UINT actual_clipboard_type; |
807 | int use_configured_coding_system = 1; | |
808 | ||
809 | /* This parameter used to be the current frame, but we don't use | |
810 | that any more. */ | |
811 | (void) ignored; | |
41a48e45 | 812 | |
52c7f9ee JR |
813 | /* Don't pass our own text from the clipboard (which might be |
814 | troublesome if the killed text includes null characters). */ | |
815 | if (!NILP (current_text)) | |
816 | return ret; | |
817 | ||
818 | setup_config (); | |
819 | actual_clipboard_type = cfg_clipboard_type; | |
41a48e45 | 820 | |
4d7e6e51 | 821 | block_input (); |
41a48e45 | 822 | |
52c7f9ee | 823 | if (!OpenClipboard (clipboard_owner)) |
ee78dc32 | 824 | goto done; |
41a48e45 | 825 | |
52c7f9ee JR |
826 | if ((htext = GetClipboardData (actual_clipboard_type)) == NULL) |
827 | { | |
828 | /* If we want CF_UNICODETEXT but can't get it, the current | |
829 | coding system is useless. OTOH we can still try and decode | |
830 | CF_TEXT based on the locale that the system gives us and that | |
831 | we get down below. */ | |
832 | if (actual_clipboard_type == CF_UNICODETEXT) | |
833 | { | |
834 | htext = GetClipboardData (CF_TEXT); | |
835 | if (htext != NULL) | |
836 | { | |
837 | actual_clipboard_type = CF_TEXT; | |
838 | use_configured_coding_system = 0; | |
839 | } | |
840 | } | |
841 | } | |
842 | if (htext == NULL) | |
ee78dc32 GV |
843 | goto closeclip; |
844 | ||
ee78dc32 | 845 | { |
69cddef0 GV |
846 | unsigned char *src; |
847 | unsigned char *dst; | |
ee78dc32 | 848 | int nbytes; |
69cddef0 | 849 | int truelen; |
c0ca703b | 850 | int require_decoding = 0; |
41a48e45 | 851 | |
69cddef0 | 852 | if ((src = (unsigned char *) GlobalLock (htext)) == NULL) |
ee78dc32 | 853 | goto closeclip; |
41a48e45 | 854 | |
52c7f9ee JR |
855 | /* If the clipboard data contains any non-ascii code, we need to |
856 | decode it with a coding system. */ | |
857 | if (actual_clipboard_type == CF_UNICODETEXT) | |
858 | { | |
859 | nbytes = lstrlenW ((WCHAR *)src) * 2; | |
860 | require_decoding = 1; | |
861 | } | |
862 | else | |
863 | { | |
864 | int i; | |
06466d9a | 865 | |
52c7f9ee | 866 | nbytes = strlen (src); |
aab7e392 | 867 | |
52c7f9ee JR |
868 | for (i = 0; i < nbytes; i++) |
869 | { | |
870 | if (src[i] >= 0x80) | |
871 | { | |
872 | require_decoding = 1; | |
873 | break; | |
874 | } | |
875 | } | |
876 | } | |
93cbf229 | 877 | |
c0ca703b | 878 | if (require_decoding) |
69cddef0 | 879 | { |
bbb059f3 | 880 | struct coding_system coding; |
52c7f9ee | 881 | Lisp_Object coding_system = Qnil; |
9a38f8d5 | 882 | Lisp_Object dos_coding_system; |
b56ceb92 | 883 | |
52c7f9ee JR |
884 | /* `next-selection-coding-system' should override everything, |
885 | even when the locale passed by the system disagrees. The | |
886 | only exception is when `next-selection-coding-system' | |
887 | requested CF_UNICODETEXT and we couldn't get that. */ | |
888 | if (use_configured_coding_system | |
889 | && !NILP (Vnext_selection_coding_system)) | |
890 | coding_system = Vnext_selection_coding_system; | |
891 | ||
892 | /* If we have CF_TEXT or CF_OEMTEXT, we want to check out | |
893 | CF_LOCALE, too. */ | |
894 | else if (actual_clipboard_type != CF_UNICODETEXT) | |
895 | { | |
896 | HGLOBAL hlocale; | |
897 | LCID lcid = DEFAULT_LCID; | |
898 | UINT cp; | |
899 | ||
900 | /* Documentation says that the OS always generates | |
901 | CF_LOCALE info automatically, so the locale handle | |
902 | should always be present. Fact is that this is not | |
903 | always true on 9x ;-(. */ | |
904 | hlocale = GetClipboardData (CF_LOCALE); | |
905 | if (hlocale != NULL) | |
906 | { | |
907 | const LCID * lcid_ptr; | |
908 | lcid_ptr = (const LCID *) GlobalLock (hlocale); | |
909 | if (lcid_ptr != NULL) | |
910 | { | |
911 | lcid = *lcid_ptr; | |
912 | GlobalUnlock (hlocale); | |
913 | } | |
914 | ||
915 | /* 9x has garbage as the sort order (to be exact there | |
916 | is another instance of the language id in the upper | |
917 | word). We don't care about sort order anyway, so | |
918 | we just filter out the unneeded mis-information to | |
919 | avoid irritations. */ | |
920 | lcid = MAKELCID (LANGIDFROMLCID (lcid), SORT_DEFAULT); | |
921 | } | |
922 | ||
923 | /* If we are using fallback from CF_UNICODETEXT, we can't | |
924 | use the configured coding system. Also we don't want | |
925 | to use it, if the system has supplied us with a locale | |
926 | and it is not just the system default. */ | |
927 | if (!use_configured_coding_system || lcid != DEFAULT_LCID) | |
928 | { | |
929 | cp = cp_from_locale (lcid, actual_clipboard_type); | |
930 | /* If it's just our current standard setting anyway, | |
931 | use the coding system that the user has selected. | |
932 | Otherwise create a new spec to match the locale | |
933 | that was specified by the other side or the | |
934 | system. */ | |
935 | if (!use_configured_coding_system || cp != cfg_codepage) | |
936 | coding_system = coding_from_cp (cp); | |
937 | } | |
938 | } | |
939 | ||
940 | if (NILP (coding_system)) | |
941 | coding_system = Vselection_coding_system; | |
942 | Vnext_selection_coding_system = Qnil; | |
bbb059f3 | 943 | |
9a38f8d5 KH |
944 | dos_coding_system = validate_coding_system (coding_system); |
945 | if (!NILP (dos_coding_system)) | |
946 | { | |
947 | setup_windows_coding_system (dos_coding_system, &coding); | |
948 | coding.source = src; | |
949 | decode_coding_object (&coding, Qnil, 0, 0, nbytes, nbytes, Qt); | |
950 | ret = coding.dst_object; | |
951 | ||
952 | Vlast_coding_system_used = CODING_ID_NAME (coding.id); | |
953 | } | |
69cddef0 | 954 | } |
bbb059f3 AI |
955 | else |
956 | { | |
52c7f9ee JR |
957 | /* FIXME: We may want to repeat the code in this branch for |
958 | the Unicode case. */ | |
959 | ||
960 | /* Need to know final size after CR chars are removed because | |
961 | we can't change the string size manually, and doing an | |
962 | extra copy is silly. We only remove CR when it appears as | |
963 | part of CRLF. */ | |
bbb059f3 AI |
964 | |
965 | truelen = nbytes; | |
966 | dst = src; | |
967 | /* avoid using strchr because it recomputes the length everytime */ | |
968 | while ((dst = memchr (dst, '\r', nbytes - (dst - src))) != NULL) | |
969 | { | |
c0ca703b GV |
970 | if (dst[1] == '\n') /* safe because of trailing '\0' */ |
971 | truelen--; | |
bbb059f3 AI |
972 | dst++; |
973 | } | |
69cddef0 | 974 | |
bbb059f3 | 975 | ret = make_uninit_string (truelen); |
69cddef0 | 976 | |
c0ca703b GV |
977 | /* Convert CRLF line endings (the standard CF_TEXT clipboard |
978 | format) to LF endings as used internally by Emacs. */ | |
69cddef0 | 979 | |
d5db4077 | 980 | dst = SDATA (ret); |
bbb059f3 | 981 | while (1) |
69cddef0 | 982 | { |
bbb059f3 AI |
983 | unsigned char *next; |
984 | /* copy next line or remaining bytes excluding '\0' */ | |
985 | next = _memccpy (dst, src, '\r', nbytes); | |
986 | if (next) | |
987 | { | |
988 | /* copied one line ending with '\r' */ | |
989 | int copied = next - dst; | |
990 | nbytes -= copied; | |
c0ca703b | 991 | dst += copied; |
bbb059f3 | 992 | src += copied; |
c0ca703b GV |
993 | if (*src == '\n') |
994 | dst--; /* overwrite '\r' with '\n' */ | |
995 | } | |
bbb059f3 AI |
996 | else |
997 | /* copied remaining partial line -> now finished */ | |
998 | break; | |
999 | } | |
0108f679 AI |
1000 | |
1001 | Vlast_coding_system_used = Qraw_text; | |
69cddef0 GV |
1002 | } |
1003 | ||
ee78dc32 GV |
1004 | GlobalUnlock (htext); |
1005 | } | |
1006 | ||
1007 | closeclip: | |
1008 | CloseClipboard (); | |
41a48e45 | 1009 | |
ee78dc32 | 1010 | done: |
4d7e6e51 | 1011 | unblock_input (); |
41a48e45 | 1012 | |
ee78dc32 GV |
1013 | return (ret); |
1014 | } | |
1015 | ||
9aa94bd5 KH |
1016 | /* Support checking for a clipboard selection. */ |
1017 | ||
1018 | DEFUN ("x-selection-exists-p", Fx_selection_exists_p, Sx_selection_exists_p, | |
1c0ca0b7 EZ |
1019 | 0, 2, 0, |
1020 | doc: /* Whether there is an owner for the given X selection. | |
1021 | SELECTION should be the name of the selection in question, typically | |
1022 | one of the symbols `PRIMARY', `SECONDARY', or `CLIPBOARD'. (X expects | |
1023 | these literal upper-case names.) The symbol nil is the same as | |
1024 | `PRIMARY', and t is the same as `SECONDARY'. | |
1025 | ||
1026 | TERMINAL should be a terminal object or a frame specifying the X | |
1027 | server to query. If omitted or nil, that stands for the selected | |
1028 | frame's display, or the first available X display. */) | |
1029 | (Lisp_Object selection, Lisp_Object terminal) | |
9aa94bd5 | 1030 | { |
b7826503 | 1031 | CHECK_SYMBOL (selection); |
9aa94bd5 KH |
1032 | |
1033 | /* Return nil for PRIMARY and SECONDARY selections; for CLIPBOARD, check | |
1034 | if the clipboard currently has valid text format contents. */ | |
1035 | ||
1036 | if (EQ (selection, QCLIPBOARD)) | |
1037 | { | |
1038 | Lisp_Object val = Qnil; | |
1039 | ||
9a38f8d5 KH |
1040 | setup_config (); |
1041 | ||
9aa94bd5 KH |
1042 | if (OpenClipboard (NULL)) |
1043 | { | |
52c7f9ee | 1044 | UINT format = 0; |
52c7f9ee JR |
1045 | while ((format = EnumClipboardFormats (format))) |
1046 | /* Check CF_TEXT in addition to cfg_clipboard_type, | |
1047 | because we can fall back on that if CF_UNICODETEXT is | |
1048 | not available. Actually a check for CF_TEXT only | |
1049 | should be enough. */ | |
1050 | if (format == cfg_clipboard_type || format == CF_TEXT) | |
9aa94bd5 KH |
1051 | { |
1052 | val = Qt; | |
1053 | break; | |
1054 | } | |
1055 | CloseClipboard (); | |
1056 | } | |
1057 | return val; | |
1058 | } | |
1059 | return Qnil; | |
1060 | } | |
1061 | ||
52c7f9ee JR |
1062 | /* One-time init. Called in the un-dumped Emacs, but not in the |
1063 | dumped version. */ | |
1064 | ||
41a48e45 | 1065 | void |
b56ceb92 | 1066 | syms_of_w32select (void) |
ee78dc32 | 1067 | { |
fbd6baed GV |
1068 | defsubr (&Sw32_set_clipboard_data); |
1069 | defsubr (&Sw32_get_clipboard_data); | |
9aa94bd5 KH |
1070 | defsubr (&Sx_selection_exists_p); |
1071 | ||
29208e82 | 1072 | DEFVAR_LISP ("selection-coding-system", Vselection_coding_system, |
33f09670 | 1073 | doc: /* Coding system for communicating with other programs. |
f5f25615 GM |
1074 | |
1075 | For MS-Windows and MS-DOS: | |
1076 | When sending or receiving text via selection and clipboard, the text | |
1077 | is encoded or decoded by this coding system. The default value is | |
1078 | the current system default encoding on 9x/Me, `utf-16le-dos' | |
1079 | \(Unicode) on NT/W2K/XP, and `iso-latin-1-dos' on MS-DOS. | |
1080 | ||
1081 | For X Windows: | |
1082 | When sending text via selection and clipboard, if the target | |
1083 | data-type matches with the type of this coding system, it is used | |
1084 | for encoding the text. Otherwise (including the case that this | |
1085 | variable is nil), a proper coding system is used as below: | |
1086 | ||
1087 | data-type coding system | |
1088 | --------- ------------- | |
1089 | UTF8_STRING utf-8 | |
1090 | COMPOUND_TEXT compound-text-with-extensions | |
1091 | STRING iso-latin-1 | |
1092 | C_STRING no-conversion | |
1093 | ||
1094 | When receiving text, if this coding system is non-nil, it is used | |
1095 | for decoding regardless of the data-type. If this is nil, a | |
1096 | proper coding system is used according to the data-type as above. | |
1097 | ||
1098 | See also the documentation of the variable `x-select-request-type' how | |
1099 | to control which data-type to request for receiving text. | |
1100 | ||
1101 | The default value is nil. */); | |
52c7f9ee JR |
1102 | /* The actual value is set dynamically in the dumped Emacs, see |
1103 | below. */ | |
1104 | Vselection_coding_system = Qnil; | |
bbb059f3 | 1105 | |
29208e82 | 1106 | DEFVAR_LISP ("next-selection-coding-system", Vnext_selection_coding_system, |
33f09670 JR |
1107 | doc: /* Coding system for the next communication with other programs. |
1108 | Usually, `selection-coding-system' is used for communicating with | |
3646b86d GM |
1109 | other programs (X Windows clients or MS Windows programs). But, if this |
1110 | variable is set, it is used for the next communication only. | |
1111 | After the communication, this variable is set to nil. */); | |
93cbf229 GV |
1112 | Vnext_selection_coding_system = Qnil; |
1113 | ||
9c9d6d8b | 1114 | DEFSYM (QCLIPBOARD, "CLIPBOARD"); |
52c7f9ee JR |
1115 | |
1116 | cfg_coding_system = Qnil; staticpro (&cfg_coding_system); | |
1117 | current_text = Qnil; staticpro (¤t_text); | |
1118 | current_coding_system = Qnil; staticpro (¤t_coding_system); | |
1119 | ||
9c9d6d8b | 1120 | DEFSYM (QUNICODE, "utf-16le-dos"); |
52c7f9ee JR |
1121 | QANSICP = Qnil; staticpro (&QANSICP); |
1122 | QOEMCP = Qnil; staticpro (&QOEMCP); | |
1123 | } | |
1124 | ||
1125 | /* One-time init. Called in the dumped Emacs, but not in the | |
1126 | un-dumped version. */ | |
1127 | ||
1128 | void | |
b56ceb92 | 1129 | globals_of_w32select (void) |
52c7f9ee JR |
1130 | { |
1131 | DEFAULT_LCID = GetUserDefaultLCID (); | |
1132 | /* Drop the sort order from the LCID, so we can compare this with | |
1133 | CF_LOCALE objects that have the same fix on 9x. */ | |
1134 | DEFAULT_LCID = MAKELCID (LANGIDFROMLCID (DEFAULT_LCID), SORT_DEFAULT); | |
1135 | ||
1136 | ANSICP = GetACP (); | |
1137 | OEMCP = GetOEMCP (); | |
1138 | ||
1139 | QANSICP = coding_from_cp (ANSICP); | |
1140 | QOEMCP = coding_from_cp (OEMCP); | |
1141 | ||
1142 | if (os_subtype == OS_NT) | |
1143 | Vselection_coding_system = QUNICODE; | |
1144 | else if (inhibit_window_system) | |
1145 | Vselection_coding_system = QOEMCP; | |
1146 | else | |
1147 | Vselection_coding_system = QANSICP; | |
1148 | ||
1149 | clipboard_owner = create_owner (); | |
ee78dc32 | 1150 | } |