Commit | Line | Data |
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e9e23e23 | 1 | /* Selection processing for Emacs on the Microsoft W32 API. |
e9bffc61 GM |
2 | |
3 | Copyright (C) 1993, 1994, 2001, 2002, 2003, 2004, 2005, 2006, 2007, | |
4 | 2008, 2009, 2010, 2011 Free Software Foundation, Inc. | |
41a48e45 | 5 | |
3b7ad313 EN |
6 | This file is part of GNU Emacs. |
7 | ||
9ec0b715 | 8 | GNU Emacs is free software: you can redistribute it and/or modify |
3b7ad313 | 9 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
10 | the Free Software Foundation, either version 3 of the License, or |
11 | (at your option) any later version. | |
3b7ad313 EN |
12 | |
13 | GNU Emacs is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
9ec0b715 | 19 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
ee78dc32 | 20 | |
52c7f9ee JR |
21 | /* Written by Kevin Gallo, Benjamin Riefenstahl */ |
22 | ||
23 | ||
24 | /* | |
25 | * Notes on usage of selection-coding-system and | |
26 | * next-selection-coding-system on MS Windows: | |
27 | * | |
28 | * The selection coding system variables apply only to the version of | |
29 | * the clipboard data that is closest in type, i.e. when a 16-bit | |
30 | * Unicode coding system is given, they apply to he Unicode clipboard | |
31 | * (CF_UNICODETEXT), when a well-known console codepage is given, they | |
32 | * apply to the console version of the clipboard data (CF_OEMTEXT), | |
33 | * else they apply to the normal 8-bit text clipboard (CF_TEXT). | |
b56ceb92 | 34 | * |
52c7f9ee JR |
35 | * When pasting (getting data from the OS), the clipboard format that |
36 | * matches the {next-}selection-coding-system is retrieved. If | |
37 | * Unicode is requested, but not available, 8-bit text (CF_TEXT) is | |
38 | * used. In all other cases the OS will transparently convert | |
39 | * formats, so no other fallback is needed. | |
40 | * | |
41 | * When copying or cutting (sending data to the OS), the data is | |
42 | * announced and stored internally, but only actually rendered on | |
43 | * request. The requester determines the format provided. The | |
44 | * {next-}selection-coding-system is only used, when its corresponding | |
45 | * clipboard type matches the type requested. | |
46 | * | |
47 | * Scenarios to use the facilities for customizing the selection | |
48 | * coding system are: | |
b56ceb92 | 49 | * |
52c7f9ee JR |
50 | * ;; Generally use KOI8-R instead of the russian MS codepage for |
51 | * ;; the 8-bit clipboard. | |
52 | * (set-selection-coding-system 'koi8-r-dos) | |
b56ceb92 | 53 | * |
52c7f9ee | 54 | * Or |
b56ceb92 | 55 | * |
52c7f9ee JR |
56 | * ;; Create a special clipboard copy function that uses codepage |
57 | * ;; 1253 (Greek) to copy Greek text to a specific non-Unicode | |
58 | * ;; application. | |
59 | * (defun greek-copy (beg end) | |
60 | * (interactive "r") | |
61 | * (set-next-selection-coding-system 'cp1253-dos) | |
62 | * (copy-region-as-kill beg end)) | |
63 | * (global-set-key "\C-c\C-c" 'greek-copy) | |
64 | */ | |
65 | ||
66 | /* | |
67 | * Ideas for further directions: | |
68 | * | |
69 | * The encoding and decoding routines could be moved to Lisp code | |
70 | * similar to how xselect.c does it (using well-known routine names | |
71 | * for the delayed rendering). If the definition of which clipboard | |
72 | * types should be supported is also moved to Lisp, functionality | |
73 | * could be expanded to CF_HTML, CF_RTF and maybe other types. | |
74 | */ | |
b56ceb92 | 75 | |
ee78dc32 | 76 | #include <config.h> |
d7306fe6 | 77 | #include <setjmp.h> |
ee78dc32 | 78 | #include "lisp.h" |
fbd6baed | 79 | #include "w32term.h" /* for all of the w32 includes */ |
52c7f9ee | 80 | #include "w32heap.h" /* os_subtype */ |
ee78dc32 | 81 | #include "blockinput.h" |
52c7f9ee | 82 | #include "keyboard.h" /* cmd_error_internal() */ |
bbb059f3 AI |
83 | #include "charset.h" |
84 | #include "coding.h" | |
c949d9d0 | 85 | #include "character.h" |
f7d05dc4 | 86 | #include "composite.h" |
ee78dc32 | 87 | |
52c7f9ee JR |
88 | |
89 | static HGLOBAL convert_to_handle_as_ascii (void); | |
90 | static HGLOBAL convert_to_handle_as_coded (Lisp_Object coding_system); | |
91 | static Lisp_Object render (Lisp_Object oformat); | |
92 | static Lisp_Object render_locale (void); | |
b56ceb92 JB |
93 | static Lisp_Object render_all (Lisp_Object ignore); |
94 | static void run_protected (Lisp_Object (*code) (Lisp_Object), Lisp_Object arg); | |
52c7f9ee JR |
95 | static Lisp_Object lisp_error_handler (Lisp_Object error); |
96 | static LRESULT CALLBACK owner_callback (HWND win, UINT msg, | |
97 | WPARAM wp, LPARAM lp); | |
98 | static HWND create_owner (void); | |
99 | ||
100 | static void setup_config (void); | |
101 | static BOOL WINAPI enum_locale_callback (/*const*/ char* loc_string); | |
102 | static UINT cp_from_locale (LCID lcid, UINT format); | |
103 | static Lisp_Object coding_from_cp (UINT codepage); | |
9a38f8d5 KH |
104 | static Lisp_Object validate_coding_system (Lisp_Object coding_system); |
105 | static void setup_windows_coding_system (Lisp_Object coding_system, | |
106 | struct coding_system * coding); | |
52c7f9ee JR |
107 | |
108 | ||
109 | /* A remnant from X11: Symbol for the CLIPBORD selection type. Other | |
110 | selections are not used on Windows, so we don't need symbols for | |
111 | PRIMARY and SECONDARY. */ | |
9aa94bd5 KH |
112 | Lisp_Object QCLIPBOARD; |
113 | ||
52c7f9ee | 114 | /* Coding system for communicating with other programs via the |
bbb059f3 | 115 | clipboard. */ |
72aca5fa | 116 | static Lisp_Object Vselection_coding_system; |
bbb059f3 | 117 | |
52c7f9ee | 118 | /* Coding system for the next communication with other programs. */ |
93cbf229 GV |
119 | static Lisp_Object Vnext_selection_coding_system; |
120 | ||
52c7f9ee JR |
121 | /* Internal pseudo-constants, initialized in globals_of_w32select() |
122 | based on current system parameters. */ | |
123 | static LCID DEFAULT_LCID; | |
124 | static UINT ANSICP, OEMCP; | |
125 | static Lisp_Object QUNICODE, QANSICP, QOEMCP; | |
126 | ||
127 | /* A hidden window just for the clipboard management. */ | |
128 | static HWND clipboard_owner; | |
129 | /* A flag to tell WM_DESTROYCLIPBOARD who is to blame this time (just | |
130 | checking GetClipboardOwner() doesn't work, sadly). */ | |
131 | static int modifying_clipboard = 0; | |
132 | ||
133 | /* Configured transfer parameters, based on the last inspection of | |
134 | selection-coding-system. */ | |
135 | static Lisp_Object cfg_coding_system; | |
136 | static UINT cfg_codepage; | |
137 | static LCID cfg_lcid; | |
138 | static UINT cfg_clipboard_type; | |
139 | ||
140 | /* The current state for delayed rendering. */ | |
141 | static Lisp_Object current_text; | |
142 | static Lisp_Object current_coding_system; | |
143 | static int current_requires_encoding, current_num_nls; | |
144 | static UINT current_clipboard_type; | |
145 | static LCID current_lcid; | |
146 | ||
147 | #if TRACE | |
148 | #define ONTRACE(stmt) stmt | |
149 | #else | |
150 | #define ONTRACE(stmt) /*stmt*/ | |
151 | #endif | |
152 | ||
153 | ||
154 | /* This function assumes that there is no multibyte character in | |
155 | current_text, so we can short-cut encoding. */ | |
156 | ||
157 | static HGLOBAL | |
158 | convert_to_handle_as_ascii (void) | |
ee78dc32 | 159 | { |
52c7f9ee JR |
160 | HGLOBAL htext = NULL; |
161 | int nbytes; | |
162 | int truelen; | |
163 | unsigned char *src; | |
164 | unsigned char *dst; | |
41a48e45 | 165 | |
52c7f9ee | 166 | ONTRACE (fprintf (stderr, "convert_to_handle_as_ascii\n")); |
41a48e45 | 167 | |
52c7f9ee JR |
168 | nbytes = SBYTES (current_text) + 1; |
169 | src = SDATA (current_text); | |
41a48e45 | 170 | |
52c7f9ee JR |
171 | /* We need to add to the size the number of LF chars where we have |
172 | to insert CR chars (the standard CF_TEXT clipboard format uses | |
173 | CRLF line endings, while Emacs uses just LF internally). */ | |
41a48e45 | 174 | |
52c7f9ee JR |
175 | truelen = nbytes + current_num_nls; |
176 | ||
177 | if ((htext = GlobalAlloc (GMEM_MOVEABLE | GMEM_DDESHARE, truelen)) == NULL) | |
178 | return NULL; | |
41a48e45 | 179 | |
52c7f9ee JR |
180 | if ((dst = (unsigned char *) GlobalLock (htext)) == NULL) |
181 | { | |
182 | GlobalFree (htext); | |
183 | return NULL; | |
184 | } | |
185 | ||
186 | /* convert to CRLF line endings expected by clipboard */ | |
187 | while (1) | |
188 | { | |
189 | unsigned char *next; | |
190 | /* copy next line or remaining bytes including '\0' */ | |
191 | next = _memccpy (dst, src, '\n', nbytes); | |
192 | if (next) | |
193 | { | |
194 | /* copied one line ending with '\n' */ | |
195 | int copied = next - dst; | |
196 | nbytes -= copied; | |
197 | src += copied; | |
198 | /* insert '\r' before '\n' */ | |
199 | next[-1] = '\r'; | |
200 | next[0] = '\n'; | |
201 | dst = next + 1; | |
202 | } | |
203 | else | |
204 | /* copied remaining partial line -> now finished */ | |
205 | break; | |
206 | } | |
207 | ||
208 | GlobalUnlock (htext); | |
209 | ||
210 | return htext; | |
ee78dc32 GV |
211 | } |
212 | ||
52c7f9ee JR |
213 | /* This function assumes that there are multibyte or NUL characters in |
214 | current_text, or that we need to construct Unicode. It runs the | |
215 | text through the encoding machinery. */ | |
216 | ||
217 | static HGLOBAL | |
218 | convert_to_handle_as_coded (Lisp_Object coding_system) | |
ee78dc32 | 219 | { |
9a38f8d5 | 220 | HGLOBAL htext; |
52c7f9ee | 221 | unsigned char *dst = NULL; |
52c7f9ee | 222 | struct coding_system coding; |
52c7f9ee | 223 | |
b56ceb92 | 224 | ONTRACE (fprintf (stderr, "convert_to_handle_as_coded: %s\n", |
52c7f9ee JR |
225 | SDATA (SYMBOL_NAME (coding_system)))); |
226 | ||
9a38f8d5 | 227 | setup_windows_coding_system (coding_system, &coding); |
ed3751c8 | 228 | coding.dst_bytes = SBYTES (current_text) * 2; |
9a38f8d5 KH |
229 | coding.destination = (unsigned char *) xmalloc (coding.dst_bytes); |
230 | encode_coding_object (&coding, current_text, 0, 0, | |
231 | SCHARS (current_text), SBYTES (current_text), Qnil); | |
41a48e45 | 232 | |
9a38f8d5 | 233 | htext = GlobalAlloc (GMEM_MOVEABLE | GMEM_DDESHARE, coding.produced +2); |
41a48e45 | 234 | |
52c7f9ee JR |
235 | if (htext != NULL) |
236 | dst = (unsigned char *) GlobalLock (htext); | |
41a48e45 | 237 | |
52c7f9ee JR |
238 | if (dst != NULL) |
239 | { | |
9a38f8d5 | 240 | memcpy (dst, coding.destination, coding.produced); |
52c7f9ee JR |
241 | /* Add the string terminator. Add two NULs in case we are |
242 | producing Unicode here. */ | |
243 | dst[coding.produced] = dst[coding.produced+1] = '\0'; | |
52c7f9ee | 244 | |
9a38f8d5 | 245 | GlobalUnlock (htext); |
52c7f9ee JR |
246 | } |
247 | ||
9a38f8d5 KH |
248 | xfree (coding.destination); |
249 | ||
52c7f9ee | 250 | return htext; |
ee78dc32 GV |
251 | } |
252 | ||
52c7f9ee JR |
253 | static Lisp_Object |
254 | render (Lisp_Object oformat) | |
ee78dc32 | 255 | { |
52c7f9ee JR |
256 | HGLOBAL htext = NULL; |
257 | UINT format = XFASTINT (oformat); | |
258 | ||
259 | ONTRACE (fprintf (stderr, "render\n")); | |
260 | ||
261 | if (NILP (current_text)) | |
262 | return Qnil; | |
263 | ||
264 | if (current_requires_encoding || format == CF_UNICODETEXT) | |
265 | { | |
266 | if (format == current_clipboard_type) | |
267 | htext = convert_to_handle_as_coded (current_coding_system); | |
268 | else | |
269 | switch (format) | |
270 | { | |
271 | case CF_UNICODETEXT: | |
272 | htext = convert_to_handle_as_coded (QUNICODE); | |
273 | break; | |
274 | case CF_TEXT: | |
275 | case CF_OEMTEXT: | |
276 | { | |
277 | Lisp_Object cs; | |
278 | cs = coding_from_cp (cp_from_locale (current_lcid, format)); | |
279 | htext = convert_to_handle_as_coded (cs); | |
280 | break; | |
281 | } | |
282 | } | |
283 | } | |
284 | else | |
285 | htext = convert_to_handle_as_ascii (); | |
286 | ||
287 | ONTRACE (fprintf (stderr, "render: htext = 0x%08X\n", (unsigned) htext)); | |
288 | ||
289 | if (htext == NULL) | |
290 | return Qnil; | |
291 | ||
292 | if (SetClipboardData (format, htext) == NULL) | |
293 | { | |
ed3751c8 | 294 | GlobalFree (htext); |
52c7f9ee JR |
295 | return Qnil; |
296 | } | |
297 | ||
298 | return Qt; | |
ee78dc32 GV |
299 | } |
300 | ||
52c7f9ee JR |
301 | static Lisp_Object |
302 | render_locale (void) | |
ee78dc32 | 303 | { |
52c7f9ee JR |
304 | HANDLE hlocale = NULL; |
305 | LCID * lcid_ptr; | |
306 | ||
307 | ONTRACE (fprintf (stderr, "render_locale\n")); | |
308 | ||
309 | if (current_lcid == LOCALE_NEUTRAL || current_lcid == DEFAULT_LCID) | |
310 | return Qt; | |
311 | ||
312 | hlocale = GlobalAlloc (GMEM_MOVEABLE | GMEM_DDESHARE, sizeof (current_lcid)); | |
313 | if (hlocale == NULL) | |
314 | return Qnil; | |
315 | ||
316 | if ((lcid_ptr = (LCID *) GlobalLock (hlocale)) == NULL) | |
317 | { | |
ed3751c8 | 318 | GlobalFree (hlocale); |
52c7f9ee JR |
319 | return Qnil; |
320 | } | |
321 | ||
322 | *lcid_ptr = current_lcid; | |
323 | GlobalUnlock (hlocale); | |
324 | ||
325 | if (SetClipboardData (CF_LOCALE, hlocale) == NULL) | |
326 | { | |
ed3751c8 | 327 | GlobalFree (hlocale); |
52c7f9ee JR |
328 | return Qnil; |
329 | } | |
330 | ||
331 | return Qt; | |
332 | } | |
333 | ||
334 | /* At the end of the program, we want to ensure that our clipboard | |
335 | data survives us. This code will do that. */ | |
336 | ||
337 | static Lisp_Object | |
b56ceb92 | 338 | render_all (Lisp_Object ignore) |
52c7f9ee JR |
339 | { |
340 | ONTRACE (fprintf (stderr, "render_all\n")); | |
341 | ||
342 | /* According to the docs we should not call OpenClipboard() here, | |
343 | but testing on W2K and working code in other projects shows that | |
344 | it is actually necessary. */ | |
345 | ||
346 | OpenClipboard (NULL); | |
347 | ||
348 | /* There is no usefull means to report errors here, there are none | |
349 | expected anyway, and even if there were errors, they wouldn't do | |
350 | any harm. So we just go ahead and do what has to be done without | |
351 | bothering with error handling. */ | |
352 | ||
353 | ++modifying_clipboard; | |
354 | EmptyClipboard (); | |
355 | --modifying_clipboard; | |
356 | ||
357 | /* For text formats that we don't render here, the OS can use its | |
358 | own translation rules instead, so we don't really need to offer | |
359 | everything. To minimize memory consumption we cover three | |
360 | possible situations based on our primary format as detected from | |
361 | selection-coding-system (see setup_config()): | |
362 | ||
363 | - Post CF_TEXT only. Let the OS convert to CF_OEMTEXT and the OS | |
364 | (on NT) or the application (on 9x/Me) convert to | |
365 | CF_UNICODETEXT. | |
366 | ||
367 | - Post CF_OEMTEXT only. Similar automatic conversions happen as | |
368 | for CF_TEXT. | |
369 | ||
370 | - Post CF_UNICODETEXT + CF_TEXT. 9x itself ignores | |
371 | CF_UNICODETEXT, even though some applications can still handle | |
372 | it. | |
373 | ||
374 | Note 1: We render the less capable CF_TEXT *before* the more | |
375 | capable CF_UNICODETEXT, to prevent clobbering through automatic | |
376 | conversions, just in case. | |
377 | ||
378 | Note 2: We could check os_subtype here and only render the | |
379 | additional CF_TEXT on 9x/Me. But OTOH with | |
380 | current_clipboard_type == CF_UNICODETEXT we don't involve the | |
381 | automatic conversions anywhere else, so to get consistent | |
382 | results, we probably don't want to rely on it here either. */ | |
383 | ||
ed3751c8 | 384 | render_locale (); |
52c7f9ee JR |
385 | |
386 | if (current_clipboard_type == CF_UNICODETEXT) | |
387 | render (make_number (CF_TEXT)); | |
388 | render (make_number (current_clipboard_type)); | |
389 | ||
390 | CloseClipboard (); | |
391 | ||
392 | return Qnil; | |
393 | } | |
394 | ||
395 | static void | |
b56ceb92 | 396 | run_protected (Lisp_Object (*code) (Lisp_Object), Lisp_Object arg) |
52c7f9ee JR |
397 | { |
398 | /* FIXME: This works but it doesn't feel right. Too much fiddling | |
399 | with global variables and calling strange looking functions. Is | |
400 | this really the right way to run Lisp callbacks? */ | |
401 | ||
52c7f9ee | 402 | int owfi; |
41a48e45 | 403 | |
ee78dc32 | 404 | BLOCK_INPUT; |
41a48e45 | 405 | |
52c7f9ee JR |
406 | /* Fsignal calls abort() if it sees that waiting_for_input is |
407 | set. */ | |
408 | owfi = waiting_for_input; | |
409 | waiting_for_input = 0; | |
410 | ||
411 | internal_condition_case_1 (code, arg, Qt, lisp_error_handler); | |
412 | ||
413 | waiting_for_input = owfi; | |
41a48e45 | 414 | |
ee78dc32 | 415 | UNBLOCK_INPUT; |
52c7f9ee | 416 | } |
41a48e45 | 417 | |
52c7f9ee JR |
418 | static Lisp_Object |
419 | lisp_error_handler (Lisp_Object error) | |
420 | { | |
421 | Vsignaling_function = Qnil; | |
422 | cmd_error_internal (error, "Error in delayed clipboard rendering: "); | |
423 | Vinhibit_quit = Qt; | |
424 | return Qt; | |
ee78dc32 GV |
425 | } |
426 | ||
ee78dc32 | 427 | |
52c7f9ee JR |
428 | static LRESULT CALLBACK |
429 | owner_callback (HWND win, UINT msg, WPARAM wp, LPARAM lp) | |
ee78dc32 | 430 | { |
52c7f9ee JR |
431 | switch (msg) |
432 | { | |
433 | case WM_RENDERFORMAT: | |
434 | ONTRACE (fprintf (stderr, "WM_RENDERFORMAT\n")); | |
435 | run_protected (render, make_number (wp)); | |
436 | return 0; | |
437 | ||
438 | case WM_RENDERALLFORMATS: | |
439 | ONTRACE (fprintf (stderr, "WM_RENDERALLFORMATS\n")); | |
440 | run_protected (render_all, Qnil); | |
441 | return 0; | |
442 | ||
443 | case WM_DESTROYCLIPBOARD: | |
444 | if (!modifying_clipboard) | |
445 | { | |
446 | ONTRACE (fprintf (stderr, "WM_DESTROYCLIPBOARD (other)\n")); | |
447 | current_text = Qnil; | |
448 | current_coding_system = Qnil; | |
449 | } | |
450 | else | |
451 | { | |
452 | ONTRACE (fprintf (stderr, "WM_DESTROYCLIPBOARD (self)\n")); | |
453 | } | |
454 | return 0; | |
0ece9ef6 | 455 | |
52c7f9ee JR |
456 | case WM_DESTROY: |
457 | if (win == clipboard_owner) | |
458 | clipboard_owner = NULL; | |
459 | break; | |
460 | } | |
41a48e45 | 461 | |
52c7f9ee JR |
462 | return DefWindowProc (win, msg, wp, lp); |
463 | } | |
41a48e45 | 464 | |
52c7f9ee JR |
465 | static HWND |
466 | create_owner (void) | |
467 | { | |
468 | static const char CLASSNAME[] = "Emacs Clipboard"; | |
469 | WNDCLASS wc; | |
69cddef0 | 470 | |
52c7f9ee JR |
471 | memset (&wc, 0, sizeof (wc)); |
472 | wc.lpszClassName = CLASSNAME; | |
473 | wc.lpfnWndProc = owner_callback; | |
474 | RegisterClass (&wc); | |
475 | ||
476 | return CreateWindow (CLASSNAME, CLASSNAME, 0, 0, 0, 0, 0, NULL, NULL, | |
477 | NULL, NULL); | |
478 | } | |
479 | ||
480 | /* Called on exit by term_ntproc() in w32.c */ | |
481 | ||
482 | void | |
483 | term_w32select (void) | |
484 | { | |
485 | /* This is needed to trigger WM_RENDERALLFORMATS. */ | |
486 | if (clipboard_owner != NULL) | |
487 | DestroyWindow (clipboard_owner); | |
488 | } | |
0ece9ef6 | 489 | |
52c7f9ee JR |
490 | static void |
491 | setup_config (void) | |
492 | { | |
493 | const char *coding_name; | |
494 | const char *cp; | |
495 | char *end; | |
496 | int slen; | |
9a38f8d5 KH |
497 | Lisp_Object coding_system; |
498 | Lisp_Object dos_coding_system; | |
52c7f9ee JR |
499 | |
500 | CHECK_SYMBOL (Vselection_coding_system); | |
501 | ||
9a38f8d5 | 502 | coding_system = NILP (Vnext_selection_coding_system) ? |
52c7f9ee | 503 | Vselection_coding_system : Vnext_selection_coding_system; |
9a38f8d5 KH |
504 | |
505 | dos_coding_system = validate_coding_system (coding_system); | |
506 | if (NILP (dos_coding_system)) | |
507 | Fsignal (Qerror, | |
508 | list2 (build_string ("Coding system is invalid or doesn't have " | |
509 | "an eol variant for dos line ends"), | |
510 | coding_system)); | |
511 | ||
512 | /* Check if we have it cached */ | |
52c7f9ee | 513 | if (!NILP (cfg_coding_system) |
9a38f8d5 | 514 | && EQ (cfg_coding_system, dos_coding_system)) |
52c7f9ee | 515 | return; |
9a38f8d5 | 516 | cfg_coding_system = dos_coding_system; |
b56ceb92 | 517 | |
52c7f9ee JR |
518 | /* Set some sensible fallbacks */ |
519 | cfg_codepage = ANSICP; | |
520 | cfg_lcid = LOCALE_NEUTRAL; | |
521 | cfg_clipboard_type = CF_TEXT; | |
522 | ||
523 | /* Interpret the coding system symbol name */ | |
524 | coding_name = SDATA (SYMBOL_NAME (cfg_coding_system)); | |
525 | ||
526 | /* "(.*-)?utf-16.*" -> CF_UNICODETEXT */ | |
527 | cp = strstr (coding_name, "utf-16"); | |
528 | if (cp != NULL && (cp == coding_name || cp[-1] == '-')) | |
0ece9ef6 | 529 | { |
52c7f9ee JR |
530 | cfg_clipboard_type = CF_UNICODETEXT; |
531 | return; | |
0ece9ef6 | 532 | } |
69cddef0 | 533 | |
52c7f9ee JR |
534 | /* "cp[0-9]+.*" or "windows-[0-9]+.*" -> CF_TEXT or CF_OEMTEXT */ |
535 | slen = strlen (coding_name); | |
536 | if (slen >= 4 && coding_name[0] == 'c' && coding_name[1] == 'p') | |
537 | cp = coding_name + 2; | |
538 | else if (slen >= 10 && memcmp (coding_name, "windows-", 8) == 0) | |
539 | cp = coding_name + 8; | |
540 | else | |
541 | return; | |
542 | ||
543 | end = (char*)cp; | |
544 | cfg_codepage = strtol (cp, &end, 10); | |
545 | ||
546 | /* Error return from strtol() or number of digits < 2 -> Restore the | |
547 | default and drop it. */ | |
548 | if (cfg_codepage == 0 || (end-cp) < 2 ) | |
549 | { | |
550 | cfg_codepage = ANSICP; | |
551 | return; | |
552 | } | |
bbb059f3 | 553 | |
52c7f9ee JR |
554 | /* Is it the currently active system default? */ |
555 | if (cfg_codepage == ANSICP) | |
556 | { | |
557 | /* cfg_clipboard_type = CF_TEXT; */ | |
558 | return; | |
559 | } | |
560 | if (cfg_codepage == OEMCP) | |
561 | { | |
562 | cfg_clipboard_type = CF_OEMTEXT; | |
563 | return; | |
564 | } | |
69cddef0 | 565 | |
52c7f9ee JR |
566 | /* Else determine a suitable locale the hard way. */ |
567 | EnumSystemLocales (enum_locale_callback, LCID_INSTALLED); | |
568 | } | |
69cddef0 | 569 | |
52c7f9ee JR |
570 | static BOOL WINAPI |
571 | enum_locale_callback (/*const*/ char* loc_string) | |
572 | { | |
573 | LCID lcid; | |
574 | UINT codepage; | |
69cddef0 | 575 | |
52c7f9ee | 576 | lcid = strtoul (loc_string, NULL, 16); |
bbb059f3 | 577 | |
52c7f9ee JR |
578 | /* Is the wanted codepage the "ANSI" codepage for this locale? */ |
579 | codepage = cp_from_locale (lcid, CF_TEXT); | |
580 | if (codepage == cfg_codepage) | |
581 | { | |
582 | cfg_lcid = lcid; | |
583 | cfg_clipboard_type = CF_TEXT; | |
584 | return FALSE; /* Stop enumeration */ | |
585 | } | |
b56ceb92 | 586 | |
52c7f9ee JR |
587 | /* Is the wanted codepage the OEM codepage for this locale? */ |
588 | codepage = cp_from_locale (lcid, CF_OEMTEXT); | |
589 | if (codepage == cfg_codepage) | |
590 | { | |
591 | cfg_lcid = lcid; | |
592 | cfg_clipboard_type = CF_OEMTEXT; | |
593 | return FALSE; /* Stop enumeration */ | |
594 | } | |
41a48e45 | 595 | |
52c7f9ee JR |
596 | return TRUE; /* Continue enumeration */ |
597 | } | |
41a48e45 | 598 | |
52c7f9ee JR |
599 | static UINT |
600 | cp_from_locale (LCID lcid, UINT format) | |
601 | { | |
602 | char buffer[20] = ""; | |
603 | UINT variant, cp; | |
0108f679 | 604 | |
52c7f9ee JR |
605 | variant = |
606 | format == CF_TEXT ? LOCALE_IDEFAULTANSICODEPAGE : LOCALE_IDEFAULTCODEPAGE; | |
bbb059f3 | 607 | |
52c7f9ee JR |
608 | GetLocaleInfo (lcid, variant, buffer, sizeof (buffer)); |
609 | cp = strtoul (buffer, NULL, 10); | |
bf2133d7 | 610 | |
52c7f9ee JR |
611 | if (cp == CP_ACP) |
612 | return ANSICP; | |
613 | else if (cp == CP_OEMCP) | |
614 | return OEMCP; | |
615 | else | |
616 | return cp; | |
617 | } | |
bf2133d7 | 618 | |
52c7f9ee JR |
619 | static Lisp_Object |
620 | coding_from_cp (UINT codepage) | |
621 | { | |
622 | char buffer[30]; | |
623 | sprintf (buffer, "cp%d-dos", (int) codepage); | |
624 | return intern (buffer); | |
9a38f8d5 KH |
625 | /* We don't need to check that this coding system actually exists |
626 | right here, because that is done later for all coding systems | |
627 | used, regardless of where they originate. */ | |
ee78dc32 | 628 | } |
06466d9a | 629 | |
9a38f8d5 KH |
630 | static Lisp_Object |
631 | validate_coding_system (Lisp_Object coding_system) | |
632 | { | |
633 | Lisp_Object eol_type; | |
634 | ||
635 | /* Make sure the input is valid. */ | |
636 | if (NILP (Fcoding_system_p (coding_system))) | |
637 | return Qnil; | |
638 | ||
639 | /* Make sure we use a DOS coding system as mandated by the system | |
640 | specs. */ | |
641 | eol_type = Fcoding_system_eol_type (coding_system); | |
642 | ||
643 | /* Already a DOS coding system? */ | |
644 | if (EQ (eol_type, make_number (1))) | |
645 | return coding_system; | |
646 | ||
647 | /* Get EOL_TYPE vector of the base of CODING_SYSTEM. */ | |
648 | if (!VECTORP (eol_type)) | |
649 | { | |
650 | eol_type = Fcoding_system_eol_type (Fcoding_system_base (coding_system)); | |
651 | if (!VECTORP (eol_type)) | |
652 | return Qnil; | |
653 | } | |
654 | ||
655 | return AREF (eol_type, 1); | |
656 | } | |
657 | ||
658 | static void | |
659 | setup_windows_coding_system (Lisp_Object coding_system, | |
660 | struct coding_system * coding) | |
661 | { | |
662 | memset (coding, 0, sizeof (*coding)); | |
663 | setup_coding_system (coding_system, coding); | |
664 | ||
665 | /* Unset CODING_ANNOTATE_COMPOSITION_MASK. Previous code had | |
666 | comments about crashes in encode_coding_iso2022 trying to | |
667 | dereference a null pointer when composition was on. Selection | |
668 | data should not contain any composition sequence on Windows. | |
669 | ||
670 | CODING_ANNOTATION_MASK also includes | |
671 | CODING_ANNOTATE_DIRECTION_MASK and CODING_ANNOTATE_CHARSET_MASK, | |
672 | which both apply to ISO6429 only. We don't know if these really | |
673 | need to be unset on Windows, but it probably doesn't hurt | |
674 | either. */ | |
675 | coding->mode &= ~CODING_ANNOTATION_MASK; | |
676 | coding->mode |= CODING_MODE_LAST_BLOCK | CODING_MODE_SAFE_ENCODING; | |
677 | } | |
678 | ||
679 | ||
06466d9a | 680 | |
33f09670 JR |
681 | DEFUN ("w32-set-clipboard-data", Fw32_set_clipboard_data, |
682 | Sw32_set_clipboard_data, 1, 2, 0, | |
683 | doc: /* This sets the clipboard data to the given text. */) | |
5842a27b | 684 | (Lisp_Object string, Lisp_Object ignored) |
ee78dc32 GV |
685 | { |
686 | BOOL ok = TRUE; | |
69cddef0 | 687 | int nbytes; |
69cddef0 GV |
688 | unsigned char *src; |
689 | unsigned char *dst; | |
52c7f9ee | 690 | unsigned char *end; |
06466d9a | 691 | |
52c7f9ee JR |
692 | /* This parameter used to be the current frame, but we don't use |
693 | that any more. */ | |
694 | (void) ignored; | |
41a48e45 | 695 | |
b7826503 | 696 | CHECK_STRING (string); |
41a48e45 | 697 | |
52c7f9ee | 698 | setup_config (); |
41a48e45 | 699 | |
52c7f9ee JR |
700 | current_text = string; |
701 | current_coding_system = cfg_coding_system; | |
702 | current_clipboard_type = cfg_clipboard_type; | |
703 | current_lcid = cfg_lcid; | |
704 | current_num_nls = 0; | |
705 | current_requires_encoding = 0; | |
b56ceb92 | 706 | |
ee78dc32 | 707 | BLOCK_INPUT; |
69cddef0 | 708 | |
52c7f9ee JR |
709 | /* Check for non-ASCII characters. While we are at it, count the |
710 | number of LFs, so we know how many CRs we will have to add later | |
711 | (just in the case where we can use our internal ASCII rendering, | |
712 | see code and comment in convert_to_handle_as_ascii() above). */ | |
713 | nbytes = SBYTES (string); | |
d5db4077 | 714 | src = SDATA (string); |
0ece9ef6 | 715 | |
52c7f9ee | 716 | for (dst = src, end = src+nbytes; dst < end; dst++) |
0ece9ef6 | 717 | { |
52c7f9ee JR |
718 | if (*dst == '\n') |
719 | current_num_nls++; | |
720 | else if (*dst >= 0x80 || *dst == 0) | |
721 | { | |
722 | current_requires_encoding = 1; | |
723 | break; | |
724 | } | |
0ece9ef6 | 725 | } |
69cddef0 | 726 | |
52c7f9ee JR |
727 | if (!current_requires_encoding) |
728 | { | |
729 | /* If all we have is ASCII we don't need to pretend we offer | |
730 | anything fancy. */ | |
731 | current_coding_system = Qraw_text; | |
732 | current_clipboard_type = CF_TEXT; | |
733 | current_lcid = LOCALE_NEUTRAL; | |
734 | } | |
0108f679 | 735 | |
52c7f9ee | 736 | if (!OpenClipboard (clipboard_owner)) |
ee78dc32 | 737 | goto error; |
06466d9a | 738 | |
52c7f9ee JR |
739 | ++modifying_clipboard; |
740 | ok = EmptyClipboard (); | |
741 | --modifying_clipboard; | |
06466d9a | 742 | |
52c7f9ee JR |
743 | /* If we have something non-ASCII we may want to set a locale. We |
744 | do that directly (non-delayed), as it's just a small bit. */ | |
745 | if (ok) | |
ed3751c8 | 746 | ok = !NILP (render_locale ()); |
06466d9a | 747 | |
52c7f9ee JR |
748 | if (ok) |
749 | { | |
750 | if (clipboard_owner == NULL) | |
751 | { | |
752 | /* If for some reason we don't have a clipboard_owner, we | |
753 | just set the text format as chosen by the configuration | |
754 | and than forget about the whole thing. */ | |
ed3751c8 | 755 | ok = !NILP (render (make_number (current_clipboard_type))); |
52c7f9ee JR |
756 | current_text = Qnil; |
757 | current_coding_system = Qnil; | |
758 | } | |
759 | else | |
760 | { | |
761 | /* Advertise all supported formats so that whatever the | |
762 | requester chooses, only one encoding step needs to be | |
763 | made. This is intentionally different from what we do in | |
764 | the handler for WM_RENDERALLFORMATS. */ | |
765 | SetClipboardData (CF_UNICODETEXT, NULL); | |
766 | SetClipboardData (CF_TEXT, NULL); | |
767 | SetClipboardData (CF_OEMTEXT, NULL); | |
768 | } | |
769 | } | |
41a48e45 | 770 | |
6383ca22 JR |
771 | CloseClipboard (); |
772 | ||
52c7f9ee JR |
773 | /* With delayed rendering we haven't really "used" this coding |
774 | system yet, and it's even unclear if we ever will. But this is a | |
775 | way to tell the upper level what we *would* use under ideal | |
776 | circumstances. | |
41a48e45 | 777 | |
52c7f9ee JR |
778 | We don't signal the actually used coding-system later when we |
779 | finally render, because that can happen at any time and we don't | |
780 | want to disturb the "foreground" action. */ | |
781 | if (ok) | |
782 | Vlast_coding_system_used = current_coding_system; | |
6383ca22 | 783 | |
52c7f9ee | 784 | Vnext_selection_coding_system = Qnil; |
ee79d1aa | 785 | |
ee78dc32 GV |
786 | if (ok) goto done; |
787 | ||
788 | error: | |
41a48e45 | 789 | |
ee78dc32 | 790 | ok = FALSE; |
52c7f9ee JR |
791 | current_text = Qnil; |
792 | current_coding_system = Qnil; | |
ee79d1aa | 793 | |
ee78dc32 GV |
794 | done: |
795 | UNBLOCK_INPUT; | |
41a48e45 | 796 | |
ee78dc32 GV |
797 | return (ok ? string : Qnil); |
798 | } | |
799 | ||
52c7f9ee | 800 | |
33f09670 JR |
801 | DEFUN ("w32-get-clipboard-data", Fw32_get_clipboard_data, |
802 | Sw32_get_clipboard_data, 0, 1, 0, | |
803 | doc: /* This gets the clipboard data in text format. */) | |
5842a27b | 804 | (Lisp_Object ignored) |
ee78dc32 | 805 | { |
52c7f9ee | 806 | HGLOBAL htext; |
ee78dc32 | 807 | Lisp_Object ret = Qnil; |
52c7f9ee JR |
808 | UINT actual_clipboard_type; |
809 | int use_configured_coding_system = 1; | |
810 | ||
811 | /* This parameter used to be the current frame, but we don't use | |
812 | that any more. */ | |
813 | (void) ignored; | |
41a48e45 | 814 | |
52c7f9ee JR |
815 | /* Don't pass our own text from the clipboard (which might be |
816 | troublesome if the killed text includes null characters). */ | |
817 | if (!NILP (current_text)) | |
818 | return ret; | |
819 | ||
820 | setup_config (); | |
821 | actual_clipboard_type = cfg_clipboard_type; | |
41a48e45 | 822 | |
ee78dc32 | 823 | BLOCK_INPUT; |
41a48e45 | 824 | |
52c7f9ee | 825 | if (!OpenClipboard (clipboard_owner)) |
ee78dc32 | 826 | goto done; |
41a48e45 | 827 | |
52c7f9ee JR |
828 | if ((htext = GetClipboardData (actual_clipboard_type)) == NULL) |
829 | { | |
830 | /* If we want CF_UNICODETEXT but can't get it, the current | |
831 | coding system is useless. OTOH we can still try and decode | |
832 | CF_TEXT based on the locale that the system gives us and that | |
833 | we get down below. */ | |
834 | if (actual_clipboard_type == CF_UNICODETEXT) | |
835 | { | |
836 | htext = GetClipboardData (CF_TEXT); | |
837 | if (htext != NULL) | |
838 | { | |
839 | actual_clipboard_type = CF_TEXT; | |
840 | use_configured_coding_system = 0; | |
841 | } | |
842 | } | |
843 | } | |
844 | if (htext == NULL) | |
ee78dc32 GV |
845 | goto closeclip; |
846 | ||
ee78dc32 | 847 | { |
69cddef0 GV |
848 | unsigned char *src; |
849 | unsigned char *dst; | |
ee78dc32 | 850 | int nbytes; |
69cddef0 | 851 | int truelen; |
c0ca703b | 852 | int require_decoding = 0; |
41a48e45 | 853 | |
69cddef0 | 854 | if ((src = (unsigned char *) GlobalLock (htext)) == NULL) |
ee78dc32 | 855 | goto closeclip; |
41a48e45 | 856 | |
52c7f9ee JR |
857 | /* If the clipboard data contains any non-ascii code, we need to |
858 | decode it with a coding system. */ | |
859 | if (actual_clipboard_type == CF_UNICODETEXT) | |
860 | { | |
861 | nbytes = lstrlenW ((WCHAR *)src) * 2; | |
862 | require_decoding = 1; | |
863 | } | |
864 | else | |
865 | { | |
866 | int i; | |
06466d9a | 867 | |
52c7f9ee | 868 | nbytes = strlen (src); |
aab7e392 | 869 | |
52c7f9ee JR |
870 | for (i = 0; i < nbytes; i++) |
871 | { | |
872 | if (src[i] >= 0x80) | |
873 | { | |
874 | require_decoding = 1; | |
875 | break; | |
876 | } | |
877 | } | |
878 | } | |
93cbf229 | 879 | |
c0ca703b | 880 | if (require_decoding) |
69cddef0 | 881 | { |
bbb059f3 | 882 | struct coding_system coding; |
52c7f9ee | 883 | Lisp_Object coding_system = Qnil; |
9a38f8d5 | 884 | Lisp_Object dos_coding_system; |
b56ceb92 | 885 | |
52c7f9ee JR |
886 | /* `next-selection-coding-system' should override everything, |
887 | even when the locale passed by the system disagrees. The | |
888 | only exception is when `next-selection-coding-system' | |
889 | requested CF_UNICODETEXT and we couldn't get that. */ | |
890 | if (use_configured_coding_system | |
891 | && !NILP (Vnext_selection_coding_system)) | |
892 | coding_system = Vnext_selection_coding_system; | |
893 | ||
894 | /* If we have CF_TEXT or CF_OEMTEXT, we want to check out | |
895 | CF_LOCALE, too. */ | |
896 | else if (actual_clipboard_type != CF_UNICODETEXT) | |
897 | { | |
898 | HGLOBAL hlocale; | |
899 | LCID lcid = DEFAULT_LCID; | |
900 | UINT cp; | |
901 | ||
902 | /* Documentation says that the OS always generates | |
903 | CF_LOCALE info automatically, so the locale handle | |
904 | should always be present. Fact is that this is not | |
905 | always true on 9x ;-(. */ | |
906 | hlocale = GetClipboardData (CF_LOCALE); | |
907 | if (hlocale != NULL) | |
908 | { | |
909 | const LCID * lcid_ptr; | |
910 | lcid_ptr = (const LCID *) GlobalLock (hlocale); | |
911 | if (lcid_ptr != NULL) | |
912 | { | |
913 | lcid = *lcid_ptr; | |
914 | GlobalUnlock (hlocale); | |
915 | } | |
916 | ||
917 | /* 9x has garbage as the sort order (to be exact there | |
918 | is another instance of the language id in the upper | |
919 | word). We don't care about sort order anyway, so | |
920 | we just filter out the unneeded mis-information to | |
921 | avoid irritations. */ | |
922 | lcid = MAKELCID (LANGIDFROMLCID (lcid), SORT_DEFAULT); | |
923 | } | |
924 | ||
925 | /* If we are using fallback from CF_UNICODETEXT, we can't | |
926 | use the configured coding system. Also we don't want | |
927 | to use it, if the system has supplied us with a locale | |
928 | and it is not just the system default. */ | |
929 | if (!use_configured_coding_system || lcid != DEFAULT_LCID) | |
930 | { | |
931 | cp = cp_from_locale (lcid, actual_clipboard_type); | |
932 | /* If it's just our current standard setting anyway, | |
933 | use the coding system that the user has selected. | |
934 | Otherwise create a new spec to match the locale | |
935 | that was specified by the other side or the | |
936 | system. */ | |
937 | if (!use_configured_coding_system || cp != cfg_codepage) | |
938 | coding_system = coding_from_cp (cp); | |
939 | } | |
940 | } | |
941 | ||
942 | if (NILP (coding_system)) | |
943 | coding_system = Vselection_coding_system; | |
944 | Vnext_selection_coding_system = Qnil; | |
bbb059f3 | 945 | |
9a38f8d5 KH |
946 | dos_coding_system = validate_coding_system (coding_system); |
947 | if (!NILP (dos_coding_system)) | |
948 | { | |
949 | setup_windows_coding_system (dos_coding_system, &coding); | |
950 | coding.source = src; | |
951 | decode_coding_object (&coding, Qnil, 0, 0, nbytes, nbytes, Qt); | |
952 | ret = coding.dst_object; | |
953 | ||
954 | Vlast_coding_system_used = CODING_ID_NAME (coding.id); | |
955 | } | |
69cddef0 | 956 | } |
bbb059f3 AI |
957 | else |
958 | { | |
52c7f9ee JR |
959 | /* FIXME: We may want to repeat the code in this branch for |
960 | the Unicode case. */ | |
961 | ||
962 | /* Need to know final size after CR chars are removed because | |
963 | we can't change the string size manually, and doing an | |
964 | extra copy is silly. We only remove CR when it appears as | |
965 | part of CRLF. */ | |
bbb059f3 AI |
966 | |
967 | truelen = nbytes; | |
968 | dst = src; | |
969 | /* avoid using strchr because it recomputes the length everytime */ | |
970 | while ((dst = memchr (dst, '\r', nbytes - (dst - src))) != NULL) | |
971 | { | |
c0ca703b GV |
972 | if (dst[1] == '\n') /* safe because of trailing '\0' */ |
973 | truelen--; | |
bbb059f3 AI |
974 | dst++; |
975 | } | |
69cddef0 | 976 | |
bbb059f3 | 977 | ret = make_uninit_string (truelen); |
69cddef0 | 978 | |
c0ca703b GV |
979 | /* Convert CRLF line endings (the standard CF_TEXT clipboard |
980 | format) to LF endings as used internally by Emacs. */ | |
69cddef0 | 981 | |
d5db4077 | 982 | dst = SDATA (ret); |
bbb059f3 | 983 | while (1) |
69cddef0 | 984 | { |
bbb059f3 AI |
985 | unsigned char *next; |
986 | /* copy next line or remaining bytes excluding '\0' */ | |
987 | next = _memccpy (dst, src, '\r', nbytes); | |
988 | if (next) | |
989 | { | |
990 | /* copied one line ending with '\r' */ | |
991 | int copied = next - dst; | |
992 | nbytes -= copied; | |
c0ca703b | 993 | dst += copied; |
bbb059f3 | 994 | src += copied; |
c0ca703b GV |
995 | if (*src == '\n') |
996 | dst--; /* overwrite '\r' with '\n' */ | |
997 | } | |
bbb059f3 AI |
998 | else |
999 | /* copied remaining partial line -> now finished */ | |
1000 | break; | |
1001 | } | |
0108f679 AI |
1002 | |
1003 | Vlast_coding_system_used = Qraw_text; | |
69cddef0 GV |
1004 | } |
1005 | ||
ee78dc32 GV |
1006 | GlobalUnlock (htext); |
1007 | } | |
1008 | ||
1009 | closeclip: | |
1010 | CloseClipboard (); | |
41a48e45 | 1011 | |
ee78dc32 GV |
1012 | done: |
1013 | UNBLOCK_INPUT; | |
41a48e45 | 1014 | |
ee78dc32 GV |
1015 | return (ret); |
1016 | } | |
1017 | ||
9aa94bd5 KH |
1018 | /* Support checking for a clipboard selection. */ |
1019 | ||
1020 | DEFUN ("x-selection-exists-p", Fx_selection_exists_p, Sx_selection_exists_p, | |
33f09670 JR |
1021 | 0, 1, 0, |
1022 | doc: /* Whether there is an owner for the given X Selection. | |
1023 | The arg should be the name of the selection in question, typically one of | |
1024 | the symbols `PRIMARY', `SECONDARY', or `CLIPBOARD'. | |
1025 | \(Those are literal upper-case symbol names, since that's what X expects.) | |
1026 | For convenience, the symbol nil is the same as `PRIMARY', | |
1027 | and t is the same as `SECONDARY'. */) | |
5842a27b | 1028 | (Lisp_Object selection) |
9aa94bd5 | 1029 | { |
b7826503 | 1030 | CHECK_SYMBOL (selection); |
9aa94bd5 KH |
1031 | |
1032 | /* Return nil for PRIMARY and SECONDARY selections; for CLIPBOARD, check | |
1033 | if the clipboard currently has valid text format contents. */ | |
1034 | ||
1035 | if (EQ (selection, QCLIPBOARD)) | |
1036 | { | |
1037 | Lisp_Object val = Qnil; | |
1038 | ||
9a38f8d5 KH |
1039 | setup_config (); |
1040 | ||
9aa94bd5 KH |
1041 | if (OpenClipboard (NULL)) |
1042 | { | |
52c7f9ee | 1043 | UINT format = 0; |
52c7f9ee JR |
1044 | while ((format = EnumClipboardFormats (format))) |
1045 | /* Check CF_TEXT in addition to cfg_clipboard_type, | |
1046 | because we can fall back on that if CF_UNICODETEXT is | |
1047 | not available. Actually a check for CF_TEXT only | |
1048 | should be enough. */ | |
1049 | if (format == cfg_clipboard_type || format == CF_TEXT) | |
9aa94bd5 KH |
1050 | { |
1051 | val = Qt; | |
1052 | break; | |
1053 | } | |
1054 | CloseClipboard (); | |
1055 | } | |
1056 | return val; | |
1057 | } | |
1058 | return Qnil; | |
1059 | } | |
1060 | ||
52c7f9ee JR |
1061 | /* One-time init. Called in the un-dumped Emacs, but not in the |
1062 | dumped version. */ | |
1063 | ||
41a48e45 | 1064 | void |
b56ceb92 | 1065 | syms_of_w32select (void) |
ee78dc32 | 1066 | { |
fbd6baed GV |
1067 | defsubr (&Sw32_set_clipboard_data); |
1068 | defsubr (&Sw32_get_clipboard_data); | |
9aa94bd5 KH |
1069 | defsubr (&Sx_selection_exists_p); |
1070 | ||
72aca5fa | 1071 | DEFVAR_LISP ("selection-coding-system", &Vselection_coding_system, |
33f09670 | 1072 | doc: /* Coding system for communicating with other programs. |
f5f25615 GM |
1073 | |
1074 | For MS-Windows and MS-DOS: | |
1075 | When sending or receiving text via selection and clipboard, the text | |
1076 | is encoded or decoded by this coding system. The default value is | |
1077 | the current system default encoding on 9x/Me, `utf-16le-dos' | |
1078 | \(Unicode) on NT/W2K/XP, and `iso-latin-1-dos' on MS-DOS. | |
1079 | ||
1080 | For X Windows: | |
1081 | When sending text via selection and clipboard, if the target | |
1082 | data-type matches with the type of this coding system, it is used | |
1083 | for encoding the text. Otherwise (including the case that this | |
1084 | variable is nil), a proper coding system is used as below: | |
1085 | ||
1086 | data-type coding system | |
1087 | --------- ------------- | |
1088 | UTF8_STRING utf-8 | |
1089 | COMPOUND_TEXT compound-text-with-extensions | |
1090 | STRING iso-latin-1 | |
1091 | C_STRING no-conversion | |
1092 | ||
1093 | When receiving text, if this coding system is non-nil, it is used | |
1094 | for decoding regardless of the data-type. If this is nil, a | |
1095 | proper coding system is used according to the data-type as above. | |
1096 | ||
1097 | See also the documentation of the variable `x-select-request-type' how | |
1098 | to control which data-type to request for receiving text. | |
1099 | ||
1100 | The default value is nil. */); | |
52c7f9ee JR |
1101 | /* The actual value is set dynamically in the dumped Emacs, see |
1102 | below. */ | |
1103 | Vselection_coding_system = Qnil; | |
bbb059f3 | 1104 | |
93cbf229 | 1105 | DEFVAR_LISP ("next-selection-coding-system", &Vnext_selection_coding_system, |
33f09670 JR |
1106 | doc: /* Coding system for the next communication with other programs. |
1107 | Usually, `selection-coding-system' is used for communicating with | |
3646b86d GM |
1108 | other programs (X Windows clients or MS Windows programs). But, if this |
1109 | variable is set, it is used for the next communication only. | |
1110 | After the communication, this variable is set to nil. */); | |
93cbf229 GV |
1111 | Vnext_selection_coding_system = Qnil; |
1112 | ||
9c9d6d8b | 1113 | DEFSYM (QCLIPBOARD, "CLIPBOARD"); |
52c7f9ee JR |
1114 | |
1115 | cfg_coding_system = Qnil; staticpro (&cfg_coding_system); | |
1116 | current_text = Qnil; staticpro (¤t_text); | |
1117 | current_coding_system = Qnil; staticpro (¤t_coding_system); | |
1118 | ||
9c9d6d8b | 1119 | DEFSYM (QUNICODE, "utf-16le-dos"); |
52c7f9ee JR |
1120 | QANSICP = Qnil; staticpro (&QANSICP); |
1121 | QOEMCP = Qnil; staticpro (&QOEMCP); | |
1122 | } | |
1123 | ||
1124 | /* One-time init. Called in the dumped Emacs, but not in the | |
1125 | un-dumped version. */ | |
1126 | ||
1127 | void | |
b56ceb92 | 1128 | globals_of_w32select (void) |
52c7f9ee JR |
1129 | { |
1130 | DEFAULT_LCID = GetUserDefaultLCID (); | |
1131 | /* Drop the sort order from the LCID, so we can compare this with | |
1132 | CF_LOCALE objects that have the same fix on 9x. */ | |
1133 | DEFAULT_LCID = MAKELCID (LANGIDFROMLCID (DEFAULT_LCID), SORT_DEFAULT); | |
1134 | ||
1135 | ANSICP = GetACP (); | |
1136 | OEMCP = GetOEMCP (); | |
1137 | ||
1138 | QANSICP = coding_from_cp (ANSICP); | |
1139 | QOEMCP = coding_from_cp (OEMCP); | |
1140 | ||
1141 | if (os_subtype == OS_NT) | |
1142 | Vselection_coding_system = QUNICODE; | |
1143 | else if (inhibit_window_system) | |
1144 | Vselection_coding_system = QOEMCP; | |
1145 | else | |
1146 | Vselection_coding_system = QANSICP; | |
1147 | ||
1148 | clipboard_owner = create_owner (); | |
ee78dc32 | 1149 | } |
6b61353c | 1150 |