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b46a6a83 | 1 | /* Selection processing for Emacs on the Microsoft Windows API. |
e9bffc61 | 2 | |
acaf905b | 3 | Copyright (C) 1993-1994, 2001-2012 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 | 75 | #include <config.h> |
d7306fe6 | 76 | #include <setjmp.h> |
ee78dc32 | 77 | #include "lisp.h" |
fbd6baed | 78 | #include "w32term.h" /* for all of the w32 includes */ |
52c7f9ee | 79 | #include "w32heap.h" /* os_subtype */ |
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 | ||
7684e57b | 397 | extern int waiting_for_input; /* from keyboard.c */ |
52c7f9ee | 398 | int owfi; |
41a48e45 | 399 | |
ee78dc32 | 400 | BLOCK_INPUT; |
41a48e45 | 401 | |
52c7f9ee JR |
402 | /* Fsignal calls abort() if it sees that waiting_for_input is |
403 | set. */ | |
404 | owfi = waiting_for_input; | |
405 | waiting_for_input = 0; | |
406 | ||
407 | internal_condition_case_1 (code, arg, Qt, lisp_error_handler); | |
408 | ||
409 | waiting_for_input = owfi; | |
41a48e45 | 410 | |
ee78dc32 | 411 | UNBLOCK_INPUT; |
52c7f9ee | 412 | } |
41a48e45 | 413 | |
52c7f9ee JR |
414 | static Lisp_Object |
415 | lisp_error_handler (Lisp_Object error) | |
416 | { | |
417 | Vsignaling_function = Qnil; | |
418 | cmd_error_internal (error, "Error in delayed clipboard rendering: "); | |
419 | Vinhibit_quit = Qt; | |
420 | return Qt; | |
ee78dc32 GV |
421 | } |
422 | ||
ee78dc32 | 423 | |
52c7f9ee JR |
424 | static LRESULT CALLBACK |
425 | owner_callback (HWND win, UINT msg, WPARAM wp, LPARAM lp) | |
ee78dc32 | 426 | { |
52c7f9ee JR |
427 | switch (msg) |
428 | { | |
429 | case WM_RENDERFORMAT: | |
430 | ONTRACE (fprintf (stderr, "WM_RENDERFORMAT\n")); | |
431 | run_protected (render, make_number (wp)); | |
432 | return 0; | |
433 | ||
434 | case WM_RENDERALLFORMATS: | |
435 | ONTRACE (fprintf (stderr, "WM_RENDERALLFORMATS\n")); | |
436 | run_protected (render_all, Qnil); | |
437 | return 0; | |
438 | ||
439 | case WM_DESTROYCLIPBOARD: | |
440 | if (!modifying_clipboard) | |
441 | { | |
442 | ONTRACE (fprintf (stderr, "WM_DESTROYCLIPBOARD (other)\n")); | |
443 | current_text = Qnil; | |
444 | current_coding_system = Qnil; | |
445 | } | |
446 | else | |
447 | { | |
448 | ONTRACE (fprintf (stderr, "WM_DESTROYCLIPBOARD (self)\n")); | |
449 | } | |
450 | return 0; | |
0ece9ef6 | 451 | |
52c7f9ee JR |
452 | case WM_DESTROY: |
453 | if (win == clipboard_owner) | |
454 | clipboard_owner = NULL; | |
455 | break; | |
456 | } | |
41a48e45 | 457 | |
52c7f9ee JR |
458 | return DefWindowProc (win, msg, wp, lp); |
459 | } | |
41a48e45 | 460 | |
52c7f9ee JR |
461 | static HWND |
462 | create_owner (void) | |
463 | { | |
464 | static const char CLASSNAME[] = "Emacs Clipboard"; | |
465 | WNDCLASS wc; | |
69cddef0 | 466 | |
52c7f9ee JR |
467 | memset (&wc, 0, sizeof (wc)); |
468 | wc.lpszClassName = CLASSNAME; | |
469 | wc.lpfnWndProc = owner_callback; | |
470 | RegisterClass (&wc); | |
471 | ||
472 | return CreateWindow (CLASSNAME, CLASSNAME, 0, 0, 0, 0, 0, NULL, NULL, | |
473 | NULL, NULL); | |
474 | } | |
475 | ||
476 | /* Called on exit by term_ntproc() in w32.c */ | |
477 | ||
478 | void | |
479 | term_w32select (void) | |
480 | { | |
481 | /* This is needed to trigger WM_RENDERALLFORMATS. */ | |
482 | if (clipboard_owner != NULL) | |
483 | DestroyWindow (clipboard_owner); | |
484 | } | |
0ece9ef6 | 485 | |
52c7f9ee JR |
486 | static void |
487 | setup_config (void) | |
488 | { | |
489 | const char *coding_name; | |
490 | const char *cp; | |
491 | char *end; | |
492 | int slen; | |
9a38f8d5 KH |
493 | Lisp_Object coding_system; |
494 | Lisp_Object dos_coding_system; | |
52c7f9ee JR |
495 | |
496 | CHECK_SYMBOL (Vselection_coding_system); | |
497 | ||
9a38f8d5 | 498 | coding_system = NILP (Vnext_selection_coding_system) ? |
52c7f9ee | 499 | Vselection_coding_system : Vnext_selection_coding_system; |
9a38f8d5 KH |
500 | |
501 | dos_coding_system = validate_coding_system (coding_system); | |
502 | if (NILP (dos_coding_system)) | |
503 | Fsignal (Qerror, | |
504 | list2 (build_string ("Coding system is invalid or doesn't have " | |
505 | "an eol variant for dos line ends"), | |
506 | coding_system)); | |
507 | ||
508 | /* Check if we have it cached */ | |
52c7f9ee | 509 | if (!NILP (cfg_coding_system) |
9a38f8d5 | 510 | && EQ (cfg_coding_system, dos_coding_system)) |
52c7f9ee | 511 | return; |
9a38f8d5 | 512 | cfg_coding_system = dos_coding_system; |
b56ceb92 | 513 | |
52c7f9ee JR |
514 | /* Set some sensible fallbacks */ |
515 | cfg_codepage = ANSICP; | |
516 | cfg_lcid = LOCALE_NEUTRAL; | |
517 | cfg_clipboard_type = CF_TEXT; | |
518 | ||
519 | /* Interpret the coding system symbol name */ | |
520 | coding_name = SDATA (SYMBOL_NAME (cfg_coding_system)); | |
521 | ||
522 | /* "(.*-)?utf-16.*" -> CF_UNICODETEXT */ | |
523 | cp = strstr (coding_name, "utf-16"); | |
524 | if (cp != NULL && (cp == coding_name || cp[-1] == '-')) | |
0ece9ef6 | 525 | { |
52c7f9ee JR |
526 | cfg_clipboard_type = CF_UNICODETEXT; |
527 | return; | |
0ece9ef6 | 528 | } |
69cddef0 | 529 | |
52c7f9ee JR |
530 | /* "cp[0-9]+.*" or "windows-[0-9]+.*" -> CF_TEXT or CF_OEMTEXT */ |
531 | slen = strlen (coding_name); | |
532 | if (slen >= 4 && coding_name[0] == 'c' && coding_name[1] == 'p') | |
533 | cp = coding_name + 2; | |
534 | else if (slen >= 10 && memcmp (coding_name, "windows-", 8) == 0) | |
535 | cp = coding_name + 8; | |
536 | else | |
537 | return; | |
538 | ||
539 | end = (char*)cp; | |
540 | cfg_codepage = strtol (cp, &end, 10); | |
541 | ||
542 | /* Error return from strtol() or number of digits < 2 -> Restore the | |
543 | default and drop it. */ | |
544 | if (cfg_codepage == 0 || (end-cp) < 2 ) | |
545 | { | |
546 | cfg_codepage = ANSICP; | |
547 | return; | |
548 | } | |
bbb059f3 | 549 | |
52c7f9ee JR |
550 | /* Is it the currently active system default? */ |
551 | if (cfg_codepage == ANSICP) | |
552 | { | |
553 | /* cfg_clipboard_type = CF_TEXT; */ | |
554 | return; | |
555 | } | |
556 | if (cfg_codepage == OEMCP) | |
557 | { | |
558 | cfg_clipboard_type = CF_OEMTEXT; | |
559 | return; | |
560 | } | |
69cddef0 | 561 | |
52c7f9ee JR |
562 | /* Else determine a suitable locale the hard way. */ |
563 | EnumSystemLocales (enum_locale_callback, LCID_INSTALLED); | |
564 | } | |
69cddef0 | 565 | |
52c7f9ee JR |
566 | static BOOL WINAPI |
567 | enum_locale_callback (/*const*/ char* loc_string) | |
568 | { | |
569 | LCID lcid; | |
570 | UINT codepage; | |
69cddef0 | 571 | |
52c7f9ee | 572 | lcid = strtoul (loc_string, NULL, 16); |
bbb059f3 | 573 | |
52c7f9ee JR |
574 | /* Is the wanted codepage the "ANSI" codepage for this locale? */ |
575 | codepage = cp_from_locale (lcid, CF_TEXT); | |
576 | if (codepage == cfg_codepage) | |
577 | { | |
578 | cfg_lcid = lcid; | |
579 | cfg_clipboard_type = CF_TEXT; | |
580 | return FALSE; /* Stop enumeration */ | |
581 | } | |
b56ceb92 | 582 | |
52c7f9ee JR |
583 | /* Is the wanted codepage the OEM codepage for this locale? */ |
584 | codepage = cp_from_locale (lcid, CF_OEMTEXT); | |
585 | if (codepage == cfg_codepage) | |
586 | { | |
587 | cfg_lcid = lcid; | |
588 | cfg_clipboard_type = CF_OEMTEXT; | |
589 | return FALSE; /* Stop enumeration */ | |
590 | } | |
41a48e45 | 591 | |
52c7f9ee JR |
592 | return TRUE; /* Continue enumeration */ |
593 | } | |
41a48e45 | 594 | |
52c7f9ee JR |
595 | static UINT |
596 | cp_from_locale (LCID lcid, UINT format) | |
597 | { | |
598 | char buffer[20] = ""; | |
599 | UINT variant, cp; | |
0108f679 | 600 | |
52c7f9ee JR |
601 | variant = |
602 | format == CF_TEXT ? LOCALE_IDEFAULTANSICODEPAGE : LOCALE_IDEFAULTCODEPAGE; | |
bbb059f3 | 603 | |
52c7f9ee JR |
604 | GetLocaleInfo (lcid, variant, buffer, sizeof (buffer)); |
605 | cp = strtoul (buffer, NULL, 10); | |
bf2133d7 | 606 | |
52c7f9ee JR |
607 | if (cp == CP_ACP) |
608 | return ANSICP; | |
609 | else if (cp == CP_OEMCP) | |
610 | return OEMCP; | |
611 | else | |
612 | return cp; | |
613 | } | |
bf2133d7 | 614 | |
52c7f9ee JR |
615 | static Lisp_Object |
616 | coding_from_cp (UINT codepage) | |
617 | { | |
618 | char buffer[30]; | |
619 | sprintf (buffer, "cp%d-dos", (int) codepage); | |
620 | return intern (buffer); | |
9a38f8d5 KH |
621 | /* We don't need to check that this coding system actually exists |
622 | right here, because that is done later for all coding systems | |
623 | used, regardless of where they originate. */ | |
ee78dc32 | 624 | } |
06466d9a | 625 | |
9a38f8d5 KH |
626 | static Lisp_Object |
627 | validate_coding_system (Lisp_Object coding_system) | |
628 | { | |
629 | Lisp_Object eol_type; | |
630 | ||
631 | /* Make sure the input is valid. */ | |
632 | if (NILP (Fcoding_system_p (coding_system))) | |
633 | return Qnil; | |
634 | ||
635 | /* Make sure we use a DOS coding system as mandated by the system | |
636 | specs. */ | |
637 | eol_type = Fcoding_system_eol_type (coding_system); | |
638 | ||
639 | /* Already a DOS coding system? */ | |
640 | if (EQ (eol_type, make_number (1))) | |
641 | return coding_system; | |
642 | ||
643 | /* Get EOL_TYPE vector of the base of CODING_SYSTEM. */ | |
644 | if (!VECTORP (eol_type)) | |
645 | { | |
646 | eol_type = Fcoding_system_eol_type (Fcoding_system_base (coding_system)); | |
647 | if (!VECTORP (eol_type)) | |
648 | return Qnil; | |
649 | } | |
650 | ||
651 | return AREF (eol_type, 1); | |
652 | } | |
653 | ||
654 | static void | |
655 | setup_windows_coding_system (Lisp_Object coding_system, | |
656 | struct coding_system * coding) | |
657 | { | |
658 | memset (coding, 0, sizeof (*coding)); | |
659 | setup_coding_system (coding_system, coding); | |
660 | ||
661 | /* Unset CODING_ANNOTATE_COMPOSITION_MASK. Previous code had | |
662 | comments about crashes in encode_coding_iso2022 trying to | |
663 | dereference a null pointer when composition was on. Selection | |
664 | data should not contain any composition sequence on Windows. | |
665 | ||
666 | CODING_ANNOTATION_MASK also includes | |
667 | CODING_ANNOTATE_DIRECTION_MASK and CODING_ANNOTATE_CHARSET_MASK, | |
668 | which both apply to ISO6429 only. We don't know if these really | |
669 | need to be unset on Windows, but it probably doesn't hurt | |
670 | either. */ | |
671 | coding->mode &= ~CODING_ANNOTATION_MASK; | |
672 | coding->mode |= CODING_MODE_LAST_BLOCK | CODING_MODE_SAFE_ENCODING; | |
673 | } | |
674 | ||
675 | ||
06466d9a | 676 | |
33f09670 JR |
677 | DEFUN ("w32-set-clipboard-data", Fw32_set_clipboard_data, |
678 | Sw32_set_clipboard_data, 1, 2, 0, | |
679 | doc: /* This sets the clipboard data to the given text. */) | |
5842a27b | 680 | (Lisp_Object string, Lisp_Object ignored) |
ee78dc32 GV |
681 | { |
682 | BOOL ok = TRUE; | |
69cddef0 | 683 | int nbytes; |
69cddef0 GV |
684 | unsigned char *src; |
685 | unsigned char *dst; | |
52c7f9ee | 686 | unsigned char *end; |
06466d9a | 687 | |
52c7f9ee JR |
688 | /* This parameter used to be the current frame, but we don't use |
689 | that any more. */ | |
690 | (void) ignored; | |
41a48e45 | 691 | |
b7826503 | 692 | CHECK_STRING (string); |
41a48e45 | 693 | |
52c7f9ee | 694 | setup_config (); |
41a48e45 | 695 | |
52c7f9ee JR |
696 | current_text = string; |
697 | current_coding_system = cfg_coding_system; | |
698 | current_clipboard_type = cfg_clipboard_type; | |
699 | current_lcid = cfg_lcid; | |
700 | current_num_nls = 0; | |
701 | current_requires_encoding = 0; | |
b56ceb92 | 702 | |
ee78dc32 | 703 | BLOCK_INPUT; |
69cddef0 | 704 | |
52c7f9ee JR |
705 | /* Check for non-ASCII characters. While we are at it, count the |
706 | number of LFs, so we know how many CRs we will have to add later | |
707 | (just in the case where we can use our internal ASCII rendering, | |
708 | see code and comment in convert_to_handle_as_ascii() above). */ | |
709 | nbytes = SBYTES (string); | |
d5db4077 | 710 | src = SDATA (string); |
0ece9ef6 | 711 | |
52c7f9ee | 712 | for (dst = src, end = src+nbytes; dst < end; dst++) |
0ece9ef6 | 713 | { |
52c7f9ee JR |
714 | if (*dst == '\n') |
715 | current_num_nls++; | |
716 | else if (*dst >= 0x80 || *dst == 0) | |
717 | { | |
718 | current_requires_encoding = 1; | |
719 | break; | |
720 | } | |
0ece9ef6 | 721 | } |
69cddef0 | 722 | |
52c7f9ee JR |
723 | if (!current_requires_encoding) |
724 | { | |
725 | /* If all we have is ASCII we don't need to pretend we offer | |
726 | anything fancy. */ | |
727 | current_coding_system = Qraw_text; | |
728 | current_clipboard_type = CF_TEXT; | |
729 | current_lcid = LOCALE_NEUTRAL; | |
730 | } | |
0108f679 | 731 | |
52c7f9ee | 732 | if (!OpenClipboard (clipboard_owner)) |
ee78dc32 | 733 | goto error; |
06466d9a | 734 | |
52c7f9ee JR |
735 | ++modifying_clipboard; |
736 | ok = EmptyClipboard (); | |
737 | --modifying_clipboard; | |
06466d9a | 738 | |
52c7f9ee JR |
739 | /* If we have something non-ASCII we may want to set a locale. We |
740 | do that directly (non-delayed), as it's just a small bit. */ | |
741 | if (ok) | |
ed3751c8 | 742 | ok = !NILP (render_locale ()); |
06466d9a | 743 | |
52c7f9ee JR |
744 | if (ok) |
745 | { | |
746 | if (clipboard_owner == NULL) | |
747 | { | |
748 | /* If for some reason we don't have a clipboard_owner, we | |
749 | just set the text format as chosen by the configuration | |
750 | and than forget about the whole thing. */ | |
ed3751c8 | 751 | ok = !NILP (render (make_number (current_clipboard_type))); |
52c7f9ee JR |
752 | current_text = Qnil; |
753 | current_coding_system = Qnil; | |
754 | } | |
755 | else | |
756 | { | |
757 | /* Advertise all supported formats so that whatever the | |
fa463103 | 758 | requestor chooses, only one encoding step needs to be |
52c7f9ee JR |
759 | made. This is intentionally different from what we do in |
760 | the handler for WM_RENDERALLFORMATS. */ | |
761 | SetClipboardData (CF_UNICODETEXT, NULL); | |
762 | SetClipboardData (CF_TEXT, NULL); | |
763 | SetClipboardData (CF_OEMTEXT, NULL); | |
764 | } | |
765 | } | |
41a48e45 | 766 | |
6383ca22 JR |
767 | CloseClipboard (); |
768 | ||
52c7f9ee JR |
769 | /* With delayed rendering we haven't really "used" this coding |
770 | system yet, and it's even unclear if we ever will. But this is a | |
771 | way to tell the upper level what we *would* use under ideal | |
772 | circumstances. | |
41a48e45 | 773 | |
52c7f9ee JR |
774 | We don't signal the actually used coding-system later when we |
775 | finally render, because that can happen at any time and we don't | |
776 | want to disturb the "foreground" action. */ | |
777 | if (ok) | |
778 | Vlast_coding_system_used = current_coding_system; | |
6383ca22 | 779 | |
52c7f9ee | 780 | Vnext_selection_coding_system = Qnil; |
ee79d1aa | 781 | |
ee78dc32 GV |
782 | if (ok) goto done; |
783 | ||
784 | error: | |
41a48e45 | 785 | |
ee78dc32 | 786 | ok = FALSE; |
52c7f9ee JR |
787 | current_text = Qnil; |
788 | current_coding_system = Qnil; | |
ee79d1aa | 789 | |
ee78dc32 GV |
790 | done: |
791 | UNBLOCK_INPUT; | |
41a48e45 | 792 | |
ee78dc32 GV |
793 | return (ok ? string : Qnil); |
794 | } | |
795 | ||
52c7f9ee | 796 | |
33f09670 JR |
797 | DEFUN ("w32-get-clipboard-data", Fw32_get_clipboard_data, |
798 | Sw32_get_clipboard_data, 0, 1, 0, | |
799 | doc: /* This gets the clipboard data in text format. */) | |
5842a27b | 800 | (Lisp_Object ignored) |
ee78dc32 | 801 | { |
52c7f9ee | 802 | HGLOBAL htext; |
ee78dc32 | 803 | Lisp_Object ret = Qnil; |
52c7f9ee JR |
804 | UINT actual_clipboard_type; |
805 | int use_configured_coding_system = 1; | |
806 | ||
807 | /* This parameter used to be the current frame, but we don't use | |
808 | that any more. */ | |
809 | (void) ignored; | |
41a48e45 | 810 | |
52c7f9ee JR |
811 | /* Don't pass our own text from the clipboard (which might be |
812 | troublesome if the killed text includes null characters). */ | |
813 | if (!NILP (current_text)) | |
814 | return ret; | |
815 | ||
816 | setup_config (); | |
817 | actual_clipboard_type = cfg_clipboard_type; | |
41a48e45 | 818 | |
ee78dc32 | 819 | BLOCK_INPUT; |
41a48e45 | 820 | |
52c7f9ee | 821 | if (!OpenClipboard (clipboard_owner)) |
ee78dc32 | 822 | goto done; |
41a48e45 | 823 | |
52c7f9ee JR |
824 | if ((htext = GetClipboardData (actual_clipboard_type)) == NULL) |
825 | { | |
826 | /* If we want CF_UNICODETEXT but can't get it, the current | |
827 | coding system is useless. OTOH we can still try and decode | |
828 | CF_TEXT based on the locale that the system gives us and that | |
829 | we get down below. */ | |
830 | if (actual_clipboard_type == CF_UNICODETEXT) | |
831 | { | |
832 | htext = GetClipboardData (CF_TEXT); | |
833 | if (htext != NULL) | |
834 | { | |
835 | actual_clipboard_type = CF_TEXT; | |
836 | use_configured_coding_system = 0; | |
837 | } | |
838 | } | |
839 | } | |
840 | if (htext == NULL) | |
ee78dc32 GV |
841 | goto closeclip; |
842 | ||
ee78dc32 | 843 | { |
69cddef0 GV |
844 | unsigned char *src; |
845 | unsigned char *dst; | |
ee78dc32 | 846 | int nbytes; |
69cddef0 | 847 | int truelen; |
c0ca703b | 848 | int require_decoding = 0; |
41a48e45 | 849 | |
69cddef0 | 850 | if ((src = (unsigned char *) GlobalLock (htext)) == NULL) |
ee78dc32 | 851 | goto closeclip; |
41a48e45 | 852 | |
52c7f9ee JR |
853 | /* If the clipboard data contains any non-ascii code, we need to |
854 | decode it with a coding system. */ | |
855 | if (actual_clipboard_type == CF_UNICODETEXT) | |
856 | { | |
857 | nbytes = lstrlenW ((WCHAR *)src) * 2; | |
858 | require_decoding = 1; | |
859 | } | |
860 | else | |
861 | { | |
862 | int i; | |
06466d9a | 863 | |
52c7f9ee | 864 | nbytes = strlen (src); |
aab7e392 | 865 | |
52c7f9ee JR |
866 | for (i = 0; i < nbytes; i++) |
867 | { | |
868 | if (src[i] >= 0x80) | |
869 | { | |
870 | require_decoding = 1; | |
871 | break; | |
872 | } | |
873 | } | |
874 | } | |
93cbf229 | 875 | |
c0ca703b | 876 | if (require_decoding) |
69cddef0 | 877 | { |
bbb059f3 | 878 | struct coding_system coding; |
52c7f9ee | 879 | Lisp_Object coding_system = Qnil; |
9a38f8d5 | 880 | Lisp_Object dos_coding_system; |
b56ceb92 | 881 | |
52c7f9ee JR |
882 | /* `next-selection-coding-system' should override everything, |
883 | even when the locale passed by the system disagrees. The | |
884 | only exception is when `next-selection-coding-system' | |
885 | requested CF_UNICODETEXT and we couldn't get that. */ | |
886 | if (use_configured_coding_system | |
887 | && !NILP (Vnext_selection_coding_system)) | |
888 | coding_system = Vnext_selection_coding_system; | |
889 | ||
890 | /* If we have CF_TEXT or CF_OEMTEXT, we want to check out | |
891 | CF_LOCALE, too. */ | |
892 | else if (actual_clipboard_type != CF_UNICODETEXT) | |
893 | { | |
894 | HGLOBAL hlocale; | |
895 | LCID lcid = DEFAULT_LCID; | |
896 | UINT cp; | |
897 | ||
898 | /* Documentation says that the OS always generates | |
899 | CF_LOCALE info automatically, so the locale handle | |
900 | should always be present. Fact is that this is not | |
901 | always true on 9x ;-(. */ | |
902 | hlocale = GetClipboardData (CF_LOCALE); | |
903 | if (hlocale != NULL) | |
904 | { | |
905 | const LCID * lcid_ptr; | |
906 | lcid_ptr = (const LCID *) GlobalLock (hlocale); | |
907 | if (lcid_ptr != NULL) | |
908 | { | |
909 | lcid = *lcid_ptr; | |
910 | GlobalUnlock (hlocale); | |
911 | } | |
912 | ||
913 | /* 9x has garbage as the sort order (to be exact there | |
914 | is another instance of the language id in the upper | |
915 | word). We don't care about sort order anyway, so | |
916 | we just filter out the unneeded mis-information to | |
917 | avoid irritations. */ | |
918 | lcid = MAKELCID (LANGIDFROMLCID (lcid), SORT_DEFAULT); | |
919 | } | |
920 | ||
921 | /* If we are using fallback from CF_UNICODETEXT, we can't | |
922 | use the configured coding system. Also we don't want | |
923 | to use it, if the system has supplied us with a locale | |
924 | and it is not just the system default. */ | |
925 | if (!use_configured_coding_system || lcid != DEFAULT_LCID) | |
926 | { | |
927 | cp = cp_from_locale (lcid, actual_clipboard_type); | |
928 | /* If it's just our current standard setting anyway, | |
929 | use the coding system that the user has selected. | |
930 | Otherwise create a new spec to match the locale | |
931 | that was specified by the other side or the | |
932 | system. */ | |
933 | if (!use_configured_coding_system || cp != cfg_codepage) | |
934 | coding_system = coding_from_cp (cp); | |
935 | } | |
936 | } | |
937 | ||
938 | if (NILP (coding_system)) | |
939 | coding_system = Vselection_coding_system; | |
940 | Vnext_selection_coding_system = Qnil; | |
bbb059f3 | 941 | |
9a38f8d5 KH |
942 | dos_coding_system = validate_coding_system (coding_system); |
943 | if (!NILP (dos_coding_system)) | |
944 | { | |
945 | setup_windows_coding_system (dos_coding_system, &coding); | |
946 | coding.source = src; | |
947 | decode_coding_object (&coding, Qnil, 0, 0, nbytes, nbytes, Qt); | |
948 | ret = coding.dst_object; | |
949 | ||
950 | Vlast_coding_system_used = CODING_ID_NAME (coding.id); | |
951 | } | |
69cddef0 | 952 | } |
bbb059f3 AI |
953 | else |
954 | { | |
52c7f9ee JR |
955 | /* FIXME: We may want to repeat the code in this branch for |
956 | the Unicode case. */ | |
957 | ||
958 | /* Need to know final size after CR chars are removed because | |
959 | we can't change the string size manually, and doing an | |
960 | extra copy is silly. We only remove CR when it appears as | |
961 | part of CRLF. */ | |
bbb059f3 AI |
962 | |
963 | truelen = nbytes; | |
964 | dst = src; | |
965 | /* avoid using strchr because it recomputes the length everytime */ | |
966 | while ((dst = memchr (dst, '\r', nbytes - (dst - src))) != NULL) | |
967 | { | |
c0ca703b GV |
968 | if (dst[1] == '\n') /* safe because of trailing '\0' */ |
969 | truelen--; | |
bbb059f3 AI |
970 | dst++; |
971 | } | |
69cddef0 | 972 | |
bbb059f3 | 973 | ret = make_uninit_string (truelen); |
69cddef0 | 974 | |
c0ca703b GV |
975 | /* Convert CRLF line endings (the standard CF_TEXT clipboard |
976 | format) to LF endings as used internally by Emacs. */ | |
69cddef0 | 977 | |
d5db4077 | 978 | dst = SDATA (ret); |
bbb059f3 | 979 | while (1) |
69cddef0 | 980 | { |
bbb059f3 AI |
981 | unsigned char *next; |
982 | /* copy next line or remaining bytes excluding '\0' */ | |
983 | next = _memccpy (dst, src, '\r', nbytes); | |
984 | if (next) | |
985 | { | |
986 | /* copied one line ending with '\r' */ | |
987 | int copied = next - dst; | |
988 | nbytes -= copied; | |
c0ca703b | 989 | dst += copied; |
bbb059f3 | 990 | src += copied; |
c0ca703b GV |
991 | if (*src == '\n') |
992 | dst--; /* overwrite '\r' with '\n' */ | |
993 | } | |
bbb059f3 AI |
994 | else |
995 | /* copied remaining partial line -> now finished */ | |
996 | break; | |
997 | } | |
0108f679 AI |
998 | |
999 | Vlast_coding_system_used = Qraw_text; | |
69cddef0 GV |
1000 | } |
1001 | ||
ee78dc32 GV |
1002 | GlobalUnlock (htext); |
1003 | } | |
1004 | ||
1005 | closeclip: | |
1006 | CloseClipboard (); | |
41a48e45 | 1007 | |
ee78dc32 GV |
1008 | done: |
1009 | UNBLOCK_INPUT; | |
41a48e45 | 1010 | |
ee78dc32 GV |
1011 | return (ret); |
1012 | } | |
1013 | ||
9aa94bd5 KH |
1014 | /* Support checking for a clipboard selection. */ |
1015 | ||
1016 | DEFUN ("x-selection-exists-p", Fx_selection_exists_p, Sx_selection_exists_p, | |
1c0ca0b7 EZ |
1017 | 0, 2, 0, |
1018 | doc: /* Whether there is an owner for the given X selection. | |
1019 | SELECTION should be the name of the selection in question, typically | |
1020 | one of the symbols `PRIMARY', `SECONDARY', or `CLIPBOARD'. (X expects | |
1021 | these literal upper-case names.) The symbol nil is the same as | |
1022 | `PRIMARY', and t is the same as `SECONDARY'. | |
1023 | ||
1024 | TERMINAL should be a terminal object or a frame specifying the X | |
1025 | server to query. If omitted or nil, that stands for the selected | |
1026 | frame's display, or the first available X display. */) | |
1027 | (Lisp_Object selection, Lisp_Object terminal) | |
9aa94bd5 | 1028 | { |
b7826503 | 1029 | CHECK_SYMBOL (selection); |
9aa94bd5 KH |
1030 | |
1031 | /* Return nil for PRIMARY and SECONDARY selections; for CLIPBOARD, check | |
1032 | if the clipboard currently has valid text format contents. */ | |
1033 | ||
1034 | if (EQ (selection, QCLIPBOARD)) | |
1035 | { | |
1036 | Lisp_Object val = Qnil; | |
1037 | ||
9a38f8d5 KH |
1038 | setup_config (); |
1039 | ||
9aa94bd5 KH |
1040 | if (OpenClipboard (NULL)) |
1041 | { | |
52c7f9ee | 1042 | UINT format = 0; |
52c7f9ee JR |
1043 | while ((format = EnumClipboardFormats (format))) |
1044 | /* Check CF_TEXT in addition to cfg_clipboard_type, | |
1045 | because we can fall back on that if CF_UNICODETEXT is | |
1046 | not available. Actually a check for CF_TEXT only | |
1047 | should be enough. */ | |
1048 | if (format == cfg_clipboard_type || format == CF_TEXT) | |
9aa94bd5 KH |
1049 | { |
1050 | val = Qt; | |
1051 | break; | |
1052 | } | |
1053 | CloseClipboard (); | |
1054 | } | |
1055 | return val; | |
1056 | } | |
1057 | return Qnil; | |
1058 | } | |
1059 | ||
52c7f9ee JR |
1060 | /* One-time init. Called in the un-dumped Emacs, but not in the |
1061 | dumped version. */ | |
1062 | ||
41a48e45 | 1063 | void |
b56ceb92 | 1064 | syms_of_w32select (void) |
ee78dc32 | 1065 | { |
fbd6baed GV |
1066 | defsubr (&Sw32_set_clipboard_data); |
1067 | defsubr (&Sw32_get_clipboard_data); | |
9aa94bd5 KH |
1068 | defsubr (&Sx_selection_exists_p); |
1069 | ||
29208e82 | 1070 | DEFVAR_LISP ("selection-coding-system", Vselection_coding_system, |
33f09670 | 1071 | doc: /* Coding system for communicating with other programs. |
f5f25615 GM |
1072 | |
1073 | For MS-Windows and MS-DOS: | |
1074 | When sending or receiving text via selection and clipboard, the text | |
1075 | is encoded or decoded by this coding system. The default value is | |
1076 | the current system default encoding on 9x/Me, `utf-16le-dos' | |
1077 | \(Unicode) on NT/W2K/XP, and `iso-latin-1-dos' on MS-DOS. | |
1078 | ||
1079 | For X Windows: | |
1080 | When sending text via selection and clipboard, if the target | |
1081 | data-type matches with the type of this coding system, it is used | |
1082 | for encoding the text. Otherwise (including the case that this | |
1083 | variable is nil), a proper coding system is used as below: | |
1084 | ||
1085 | data-type coding system | |
1086 | --------- ------------- | |
1087 | UTF8_STRING utf-8 | |
1088 | COMPOUND_TEXT compound-text-with-extensions | |
1089 | STRING iso-latin-1 | |
1090 | C_STRING no-conversion | |
1091 | ||
1092 | When receiving text, if this coding system is non-nil, it is used | |
1093 | for decoding regardless of the data-type. If this is nil, a | |
1094 | proper coding system is used according to the data-type as above. | |
1095 | ||
1096 | See also the documentation of the variable `x-select-request-type' how | |
1097 | to control which data-type to request for receiving text. | |
1098 | ||
1099 | The default value is nil. */); | |
52c7f9ee JR |
1100 | /* The actual value is set dynamically in the dumped Emacs, see |
1101 | below. */ | |
1102 | Vselection_coding_system = Qnil; | |
bbb059f3 | 1103 | |
29208e82 | 1104 | DEFVAR_LISP ("next-selection-coding-system", Vnext_selection_coding_system, |
33f09670 JR |
1105 | doc: /* Coding system for the next communication with other programs. |
1106 | Usually, `selection-coding-system' is used for communicating with | |
3646b86d GM |
1107 | other programs (X Windows clients or MS Windows programs). But, if this |
1108 | variable is set, it is used for the next communication only. | |
1109 | After the communication, this variable is set to nil. */); | |
93cbf229 GV |
1110 | Vnext_selection_coding_system = Qnil; |
1111 | ||
9c9d6d8b | 1112 | DEFSYM (QCLIPBOARD, "CLIPBOARD"); |
52c7f9ee JR |
1113 | |
1114 | cfg_coding_system = Qnil; staticpro (&cfg_coding_system); | |
1115 | current_text = Qnil; staticpro (¤t_text); | |
1116 | current_coding_system = Qnil; staticpro (¤t_coding_system); | |
1117 | ||
9c9d6d8b | 1118 | DEFSYM (QUNICODE, "utf-16le-dos"); |
52c7f9ee JR |
1119 | QANSICP = Qnil; staticpro (&QANSICP); |
1120 | QOEMCP = Qnil; staticpro (&QOEMCP); | |
1121 | } | |
1122 | ||
1123 | /* One-time init. Called in the dumped Emacs, but not in the | |
1124 | un-dumped version. */ | |
1125 | ||
1126 | void | |
b56ceb92 | 1127 | globals_of_w32select (void) |
52c7f9ee JR |
1128 | { |
1129 | DEFAULT_LCID = GetUserDefaultLCID (); | |
1130 | /* Drop the sort order from the LCID, so we can compare this with | |
1131 | CF_LOCALE objects that have the same fix on 9x. */ | |
1132 | DEFAULT_LCID = MAKELCID (LANGIDFROMLCID (DEFAULT_LCID), SORT_DEFAULT); | |
1133 | ||
1134 | ANSICP = GetACP (); | |
1135 | OEMCP = GetOEMCP (); | |
1136 | ||
1137 | QANSICP = coding_from_cp (ANSICP); | |
1138 | QOEMCP = coding_from_cp (OEMCP); | |
1139 | ||
1140 | if (os_subtype == OS_NT) | |
1141 | Vselection_coding_system = QUNICODE; | |
1142 | else if (inhibit_window_system) | |
1143 | Vselection_coding_system = QOEMCP; | |
1144 | else | |
1145 | Vselection_coding_system = QANSICP; | |
1146 | ||
1147 | clipboard_owner = create_owner (); | |
ee78dc32 | 1148 | } |