Commit | Line | Data |
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ee78dc32 GV |
1 | /* Win32 Selection processing for emacs |
2 | Copyright (C) 1993, 1994 Free Software Foundation. | |
3 | ||
3b7ad313 EN |
4 | This file is part of GNU Emacs. |
5 | ||
6 | GNU Emacs is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2, or (at your option) | |
9 | any later version. | |
10 | ||
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU Emacs; see the file COPYING. If not, write to | |
18 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
19 | Boston, MA 02111-1307, USA. */ | |
ee78dc32 GV |
20 | |
21 | /* Written by Kevin Gallo */ | |
22 | ||
23 | #include <config.h> | |
24 | #include "lisp.h" | |
25 | #include "w32term.h" /* for all of the win32 includes */ | |
26 | #include "dispextern.h" /* frame.h seems to want this */ | |
27 | #include "frame.h" /* Need this to get the X window of selected_frame */ | |
28 | #include "blockinput.h" | |
29 | ||
9aa94bd5 KH |
30 | Lisp_Object QCLIPBOARD; |
31 | ||
ee78dc32 GV |
32 | #if 0 |
33 | DEFUN ("win32-open-clipboard", Fwin32_open_clipboard, Swin32_open_clipboard, 0, 1, 0, | |
34 | "This opens the clipboard with the given frame pointer.") | |
35 | (frame) | |
36 | Lisp_Object frame; | |
37 | { | |
38 | BOOL ok = FALSE; | |
39 | ||
40 | if (!NILP (frame)) | |
41 | CHECK_LIVE_FRAME (frame, 0); | |
42 | ||
43 | BLOCK_INPUT; | |
44 | ||
45 | ok = OpenClipboard ((!NILP (frame) && FRAME_WIN32_P (XFRAME (frame))) ? FRAME_WIN32_WINDOW (XFRAME (frame)) : NULL); | |
46 | ||
47 | UNBLOCK_INPUT; | |
48 | ||
49 | return (ok ? frame : Qnil); | |
50 | } | |
51 | ||
52 | DEFUN ("win32-empty-clipboard", Fwin32_empty_clipboard, Swin32_empty_clipboard, 0, 0, 0, | |
53 | "This empties the clipboard and assigns ownership to the window which opened the clipboard.") | |
54 | () | |
55 | { | |
56 | BOOL ok = FALSE; | |
57 | ||
58 | BLOCK_INPUT; | |
59 | ||
60 | ok = EmptyClipboard (); | |
61 | ||
62 | UNBLOCK_INPUT; | |
63 | ||
64 | return (ok ? Qt : Qnil); | |
65 | } | |
66 | ||
67 | DEFUN ("win32-close-clipboard", Fwin32_close_clipboard, Swin32_close_clipboard, 0, 0, 0, | |
68 | "This closes the clipboard.") | |
69 | () | |
70 | { | |
71 | BOOL ok = FALSE; | |
72 | ||
73 | BLOCK_INPUT; | |
74 | ||
75 | ok = CloseClipboard (); | |
76 | ||
77 | UNBLOCK_INPUT; | |
78 | ||
79 | return (ok ? Qt : Qnil); | |
80 | } | |
81 | ||
82 | #endif | |
83 | ||
84 | DEFUN ("win32-set-clipboard-data", Fwin32_set_clipboard_data, Swin32_set_clipboard_data, 1, 2, 0, | |
85 | "This sets the clipboard data to the given text.") | |
86 | (string, frame) | |
87 | Lisp_Object string, frame; | |
88 | { | |
89 | BOOL ok = TRUE; | |
90 | HANDLE htext; | |
69cddef0 GV |
91 | int nbytes; |
92 | int truelen; | |
93 | unsigned char *src; | |
94 | unsigned char *dst; | |
ee78dc32 GV |
95 | |
96 | CHECK_STRING (string, 0); | |
97 | ||
98 | if (!NILP (frame)) | |
99 | CHECK_LIVE_FRAME (frame, 0); | |
100 | ||
101 | BLOCK_INPUT; | |
69cddef0 GV |
102 | |
103 | nbytes = XSTRING (string)->size + 1; | |
104 | src = XSTRING (string)->data; | |
105 | ||
106 | /* need to know final size after '\r' chars are inserted (the | |
107 | standard CF_TEXT clipboard format uses CRLF line endings, | |
108 | while Emacs uses just LF internally) */ | |
109 | ||
110 | truelen = nbytes; | |
111 | dst = src; | |
112 | /* avoid using strchr because it recomputes the length everytime */ | |
113 | while ((dst = memchr (dst, '\n', nbytes - (dst - src))) != NULL) | |
114 | { | |
115 | truelen++; | |
116 | dst++; | |
117 | } | |
118 | ||
119 | if ((htext = GlobalAlloc (GMEM_MOVEABLE | GMEM_DDESHARE, truelen)) == NULL) | |
120 | goto error; | |
121 | ||
122 | if ((dst = (unsigned char *) GlobalLock (htext)) == NULL) | |
ee78dc32 | 123 | goto error; |
ee78dc32 | 124 | |
69cddef0 GV |
125 | /* convert to CRLF line endings expected by clipboard */ |
126 | while (1) | |
ee78dc32 | 127 | { |
69cddef0 GV |
128 | unsigned char *next; |
129 | /* copy next line or remaining bytes including '\0' */ | |
130 | next = _memccpy (dst, src, '\n', nbytes); | |
131 | if (next) | |
ee78dc32 | 132 | { |
69cddef0 GV |
133 | /* copied one line ending with '\n' */ |
134 | int copied = next - dst; | |
135 | nbytes -= copied; | |
136 | src += copied; | |
137 | /* insert '\r' before '\n' */ | |
138 | next[-1] = '\r'; | |
139 | next[0] = '\n'; | |
140 | dst = next + 1; | |
141 | } | |
142 | else | |
143 | /* copied remaining partial line -> now finished */ | |
144 | break; | |
ee78dc32 GV |
145 | } |
146 | ||
69cddef0 | 147 | GlobalUnlock (htext); |
ee78dc32 GV |
148 | |
149 | if (!OpenClipboard ((!NILP (frame) && FRAME_WIN32_P (XFRAME (frame))) ? FRAME_WIN32_WINDOW (XFRAME (frame)) : NULL)) | |
150 | goto error; | |
151 | ||
152 | ok = EmptyClipboard () && SetClipboardData (CF_TEXT, htext); | |
153 | ||
154 | CloseClipboard (); | |
155 | ||
156 | if (ok) goto done; | |
157 | ||
158 | error: | |
159 | ||
160 | ok = FALSE; | |
161 | if (htext) GlobalFree (htext); | |
162 | ||
163 | done: | |
164 | UNBLOCK_INPUT; | |
165 | ||
166 | return (ok ? string : Qnil); | |
167 | } | |
168 | ||
169 | DEFUN ("win32-get-clipboard-data", Fwin32_get_clipboard_data, Swin32_get_clipboard_data, 0, 1, 0, | |
170 | "This gets the clipboard data in text format.") | |
171 | (frame) | |
172 | Lisp_Object frame; | |
173 | { | |
174 | HANDLE htext; | |
175 | Lisp_Object ret = Qnil; | |
176 | ||
177 | if (!NILP (frame)) | |
178 | CHECK_LIVE_FRAME (frame, 0); | |
179 | ||
180 | BLOCK_INPUT; | |
181 | ||
182 | if (!OpenClipboard ((!NILP (frame) && FRAME_WIN32_P (XFRAME (frame))) ? FRAME_WIN32_WINDOW (XFRAME (frame)) : NULL)) | |
183 | goto done; | |
184 | ||
185 | if ((htext = GetClipboardData (CF_TEXT)) == NULL) | |
186 | goto closeclip; | |
187 | ||
ee78dc32 | 188 | { |
69cddef0 GV |
189 | unsigned char *src; |
190 | unsigned char *dst; | |
ee78dc32 | 191 | int nbytes; |
69cddef0 | 192 | int truelen; |
ee78dc32 | 193 | |
69cddef0 | 194 | if ((src = (unsigned char *) GlobalLock (htext)) == NULL) |
ee78dc32 GV |
195 | goto closeclip; |
196 | ||
69cddef0 GV |
197 | nbytes = strlen (src); |
198 | ||
199 | /* need to know final size after '\r' chars are removed because | |
200 | we can't change the string size manually, and doing an extra | |
201 | copy is silly */ | |
202 | ||
203 | truelen = nbytes; | |
204 | dst = src; | |
205 | /* avoid using strchr because it recomputes the length everytime */ | |
206 | while ((dst = memchr (dst, '\r', nbytes - (dst - src))) != NULL) | |
207 | { | |
208 | truelen--; | |
209 | dst++; | |
210 | } | |
211 | ||
212 | ret = make_uninit_string (truelen); | |
213 | ||
214 | /* convert CRLF line endings (the standard CF_TEXT clipboard | |
215 | format) to LF endings as used internally by Emacs */ | |
216 | ||
217 | dst = XSTRING (ret)->data; | |
218 | while (1) | |
219 | { | |
220 | unsigned char *next; | |
221 | /* copy next line or remaining bytes excluding '\0' */ | |
222 | next = _memccpy (dst, src, '\r', nbytes); | |
223 | if (next) | |
224 | { | |
225 | /* copied one line ending with '\r' */ | |
226 | int copied = next - dst; | |
227 | nbytes -= copied; | |
228 | dst += copied - 1; /* overwrite '\r' */ | |
229 | src += copied; | |
230 | } | |
231 | else | |
232 | /* copied remaining partial line -> now finished */ | |
233 | break; | |
234 | } | |
235 | ||
ee78dc32 GV |
236 | GlobalUnlock (htext); |
237 | } | |
238 | ||
239 | closeclip: | |
240 | CloseClipboard (); | |
241 | ||
242 | done: | |
243 | UNBLOCK_INPUT; | |
244 | ||
245 | return (ret); | |
246 | } | |
247 | ||
9aa94bd5 KH |
248 | /* Support checking for a clipboard selection. */ |
249 | ||
250 | DEFUN ("x-selection-exists-p", Fx_selection_exists_p, Sx_selection_exists_p, | |
251 | 0, 1, 0, | |
252 | "Whether there is an owner for the given X Selection.\n\ | |
253 | The arg should be the name of the selection in question, typically one of\n\ | |
254 | the symbols `PRIMARY', `SECONDARY', or `CLIPBOARD'.\n\ | |
255 | \(Those are literal upper-case symbol names, since that's what X expects.)\n\ | |
256 | For convenience, the symbol nil is the same as `PRIMARY',\n\ | |
257 | and t is the same as `SECONDARY'.") | |
258 | (selection) | |
259 | Lisp_Object selection; | |
260 | { | |
261 | CHECK_SYMBOL (selection, 0); | |
262 | ||
263 | /* Return nil for PRIMARY and SECONDARY selections; for CLIPBOARD, check | |
264 | if the clipboard currently has valid text format contents. */ | |
265 | ||
266 | if (EQ (selection, QCLIPBOARD)) | |
267 | { | |
268 | Lisp_Object val = Qnil; | |
269 | ||
270 | if (OpenClipboard (NULL)) | |
271 | { | |
272 | int format = 0; | |
273 | while (format = EnumClipboardFormats (format)) | |
274 | if (format == CF_TEXT) | |
275 | { | |
276 | val = Qt; | |
277 | break; | |
278 | } | |
279 | CloseClipboard (); | |
280 | } | |
281 | return val; | |
282 | } | |
283 | return Qnil; | |
284 | } | |
285 | ||
ee78dc32 GV |
286 | void |
287 | syms_of_win32select () | |
288 | { | |
289 | #if 0 | |
290 | defsubr (&Swin32_open_clipboard); | |
291 | defsubr (&Swin32_empty_clipboard); | |
292 | defsubr (&Swin32_close_clipboard); | |
293 | #endif | |
294 | defsubr (&Swin32_set_clipboard_data); | |
295 | defsubr (&Swin32_get_clipboard_data); | |
9aa94bd5 KH |
296 | defsubr (&Sx_selection_exists_p); |
297 | ||
298 | QCLIPBOARD = intern ("CLIPBOARD"); staticpro (&QCLIPBOARD); | |
ee78dc32 | 299 | } |