9acadc2b |
1 | /* |
2 | * xcopy: quickly pipe text data into, or out of, the primary X |
3 | * selection |
4 | */ |
5 | |
9acadc2b |
6 | #include <stdio.h> |
7 | #include <stdlib.h> |
8 | #include <string.h> |
9 | #include <stdarg.h> |
10 | #include <math.h> |
11 | #include <errno.h> |
12 | #include <assert.h> |
464d0c29 |
13 | #include <ctype.h> |
14 | |
15 | #include <unistd.h> |
9acadc2b |
16 | |
17 | #include <X11/X.h> |
8fb6d89b |
18 | #include <X11/Intrinsic.h> |
9acadc2b |
19 | #include <X11/Xlib.h> |
20 | #include <X11/Xutil.h> |
21 | #include <X11/Xatom.h> |
22 | |
23 | int init_X(void); |
24 | void run_X(void); |
25 | void done_X(void); |
26 | void full_redraw(void); |
27 | void do_paste(Window window, Atom property, int Delete); |
28 | |
29 | char *pname; /* program name */ |
30 | |
31 | void error (char *fmt, ...); |
32 | |
33 | /* set from command-line parameters */ |
34 | char *display = NULL; |
3ffcf184 |
35 | enum { STRING, CTEXT, UTF8, TARGETS, TIMESTAMP, CUSTOM } mode = STRING; |
5e36d477 |
36 | int use_clipboard = False; |
3ffcf184 |
37 | char *custom_seltype = NULL; |
acc02b82 |
38 | int fork_when_writing = True; |
7d4520e0 |
39 | int use_cutbuffers = True; |
40 | int use_outgoing_incr = True; |
41 | int sel_delta = 16384; |
9acadc2b |
42 | |
43 | /* selection data */ |
44 | char *seltext; |
45 | int sellen, selsize; |
9acadc2b |
46 | |
8fb6d89b |
47 | /* incremental transfers still pending when we return to the event loop */ |
48 | struct incr { |
49 | Window window; |
50 | Atom property; |
51 | Atom type; |
52 | int format; |
53 | unsigned char *data; |
54 | size_t size; |
55 | } *incrs = NULL; |
56 | int nincrs = 0, incrsize = 0; |
57 | |
9acadc2b |
58 | /* functional parameters */ |
59 | int reading; /* read instead of writing? */ |
60 | int convert_to_ctext = True; /* Xmb convert to compound text? */ |
6aa7b28f |
61 | int verbose; |
9acadc2b |
62 | |
da0f8522 |
63 | const char usagemsg[] = |
64 | "usage: xcopy [ -r ] [ -u | -c ] [ -C ]\n" |
7d4520e0 |
65 | "modes: -r read X selection and print on stdout\n" |
66 | " no -r write to X selection from stdin\n" |
67 | " read: -t get the list of targets available to retrieve\n" |
3ffcf184 |
68 | " -T get the time stamp of the selection contents\n" |
69 | " -a atom get an arbitrary form of the selection data\n" |
7d4520e0 |
70 | " -v verbosely report progress in reading selection\n" |
71 | "write: -F remain in foreground until selection reclaimed\n" |
72 | " -I do not attempt incremental transfers (INCR)\n" |
73 | " both: -u work with UTF8_STRING type selections\n" |
74 | " -c work with COMPOUND_TEXT type selections\n" |
75 | " -C suppress automatic conversion to COMPOUND_TEXT\n" |
76 | " -b use the CLIPBOARD rather than the PRIMARY selection\n" |
77 | " -d size transfer data in chunks of at most <size> (default 16384)\n" |
78 | " -B do not use root window cut buffers\n" |
c52f9fb9 |
79 | " also: xcopy --version report version number\n" |
80 | " xcopy --help display this help text\n" |
81 | " xcopy --licence display the (MIT) licence text\n" |
da0f8522 |
82 | ; |
83 | |
84 | void usage(void) { |
85 | fputs(usagemsg, stdout); |
86 | } |
87 | |
88 | const char licencemsg[] = |
b3d07da3 |
89 | "xcopy is copyright 2001-2004,2008 Simon Tatham.\n" |
da0f8522 |
90 | "\n" |
91 | "Permission is hereby granted, free of charge, to any person\n" |
92 | "obtaining a copy of this software and associated documentation files\n" |
93 | "(the \"Software\"), to deal in the Software without restriction,\n" |
94 | "including without limitation the rights to use, copy, modify, merge,\n" |
95 | "publish, distribute, sublicense, and/or sell copies of the Software,\n" |
96 | "and to permit persons to whom the Software is furnished to do so,\n" |
97 | "subject to the following conditions:\n" |
98 | "\n" |
99 | "The above copyright notice and this permission notice shall be\n" |
100 | "included in all copies or substantial portions of the Software.\n" |
101 | "\n" |
102 | "THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND,\n" |
103 | "EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF\n" |
104 | "MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND\n" |
105 | "NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS\n" |
106 | "BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN\n" |
107 | "ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN\n" |
108 | "CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE\n" |
109 | "SOFTWARE.\n" |
110 | ; |
111 | |
112 | void licence(void) { |
113 | fputs(licencemsg, stdout); |
114 | } |
115 | |
116 | void version(void) { |
117 | #define SVN_REV "$Revision$" |
118 | char rev[sizeof(SVN_REV)]; |
119 | char *p, *q; |
120 | |
121 | strcpy(rev, SVN_REV); |
122 | |
123 | for (p = rev; *p && *p != ':'; p++); |
124 | if (*p) { |
125 | p++; |
126 | while (*p && isspace(*p)) p++; |
127 | for (q = p; *q && *q != '$'; q++); |
128 | if (*q) *q = '\0'; |
129 | printf("xcopy revision %s\n", p); |
130 | } else { |
131 | printf("xcopy: unknown version\n"); |
132 | } |
133 | } |
134 | |
9acadc2b |
135 | int main(int ac, char **av) { |
136 | int n; |
137 | int eventloop; |
138 | |
139 | pname = *av; |
140 | |
141 | /* parse the command line arguments */ |
3ffcf184 |
142 | while (--ac > 0) { |
9acadc2b |
143 | char *p = *++av; |
144 | |
145 | if (!strcmp(p, "-display") || !strcmp(p, "-disp")) { |
146 | if (!av[1]) |
147 | error ("option `%s' expects a parameter", p); |
148 | display = *++av, --ac; |
149 | } else if (!strcmp(p, "-r")) { |
150 | reading = True; |
151 | } else if (!strcmp(p, "-u")) { |
152 | mode = UTF8; |
153 | } else if (!strcmp(p, "-c")) { |
154 | mode = CTEXT; |
155 | } else if (!strcmp(p, "-C")) { |
156 | convert_to_ctext = False; |
5e36d477 |
157 | } else if (!strcmp(p, "-b")) { |
158 | use_clipboard = True; |
3ffcf184 |
159 | } else if (!strcmp(p, "-t")) { |
160 | mode = TARGETS; |
161 | } else if (!strcmp(p, "-T")) { |
162 | mode = TIMESTAMP; |
7d4520e0 |
163 | } else if (!strcmp(p, "-I")) { |
164 | use_outgoing_incr = False; |
165 | } else if (!strcmp(p, "-B")) { |
166 | use_cutbuffers = False; |
3ffcf184 |
167 | } else if (!strcmp(p, "-a")) { |
168 | if (--ac > 0) |
169 | custom_seltype = *++av; |
170 | else |
171 | error ("expected an argument to `-a'"); |
172 | mode = CUSTOM; |
7d4520e0 |
173 | } else if (!strcmp(p, "-d")) { |
174 | if (--ac > 0) |
175 | sel_delta = atoi(*++av); |
176 | else |
177 | error ("expected an argument to `-d'"); |
acc02b82 |
178 | } else if (!strcmp(p, "-F")) { |
179 | fork_when_writing = False; |
6aa7b28f |
180 | } else if (!strcmp(p, "-v")) { |
181 | verbose = True; |
da0f8522 |
182 | } else if (!strcmp(p, "--help")) { |
183 | usage(); |
184 | return 0; |
185 | } else if (!strcmp(p, "--version")) { |
186 | version(); |
187 | return 0; |
188 | } else if (!strcmp(p, "--licence") || !strcmp(p, "--license")) { |
189 | licence(); |
190 | return 0; |
9acadc2b |
191 | } else if (*p=='-') { |
192 | error ("unrecognised option `%s'", p); |
193 | } else { |
194 | error ("no parameters required"); |
195 | } |
196 | } |
197 | |
198 | if (!reading) { |
3ffcf184 |
199 | if (mode == TARGETS || mode == TIMESTAMP || mode == CUSTOM) { |
200 | error ("%s not supported in writing mode; use -r", |
201 | (mode == TARGETS ? "-t" : |
202 | mode == TIMESTAMP ? "-T" : |
203 | /* mode == CUSTOM ? */ "-a")); |
204 | } |
205 | } |
206 | |
207 | if (!reading) { |
7d4520e0 |
208 | seltext = malloc(sel_delta); |
9acadc2b |
209 | if (!seltext) |
210 | error ("out of memory"); |
7d4520e0 |
211 | selsize = sel_delta; |
9acadc2b |
212 | sellen = 0; |
213 | do { |
214 | n = fread(seltext+sellen, 1, selsize-sellen, stdin); |
215 | sellen += n; |
216 | if (sellen >= selsize) { |
7d4520e0 |
217 | seltext = realloc(seltext, selsize += sel_delta); |
9acadc2b |
218 | if (!seltext) |
219 | error ("out of memory"); |
220 | } |
221 | } while (n > 0); |
222 | if (sellen == selsize) { |
7d4520e0 |
223 | seltext = realloc(seltext, selsize += sel_delta); |
9acadc2b |
224 | if (!seltext) |
225 | error ("out of memory"); |
226 | } |
227 | seltext[sellen] = '\0'; |
228 | } |
229 | |
230 | eventloop = init_X(); |
acc02b82 |
231 | if (!reading && fork_when_writing) { |
9acadc2b |
232 | /* |
233 | * If we are writing the selection, we must go into the |
234 | * background now. |
235 | */ |
236 | int pid = fork(); |
237 | if (pid < 0) { |
238 | error("unable to fork: %s", strerror(errno)); |
239 | } else if (pid > 0) { |
240 | /* |
241 | * we are the parent; just exit |
242 | */ |
243 | return 0; |
244 | } |
245 | /* |
246 | * we are the child |
247 | */ |
248 | close(0); |
249 | close(1); |
250 | close(2); |
251 | chdir("/"); |
252 | } |
253 | if (eventloop) |
254 | run_X(); |
255 | done_X(); |
256 | return 0; |
257 | } |
258 | |
259 | /* handle errors */ |
260 | |
261 | void error (char *fmt, ...) { |
262 | va_list ap; |
263 | char errbuf[200]; |
264 | |
265 | done_X(); |
266 | va_start (ap, fmt); |
267 | vsprintf (errbuf, fmt, ap); |
268 | va_end (ap); |
269 | fprintf (stderr, "%s: %s\n", pname, errbuf); |
270 | exit (1); |
271 | } |
272 | |
273 | /* begin the X interface */ |
274 | |
275 | char *lcasename = "xcopy"; |
276 | char *ucasename = "XCopy"; |
277 | |
278 | Display *disp = NULL; |
279 | Window ourwin = None; |
acc02b82 |
280 | Atom compound_text_atom, targets_atom, timestamp_atom, atom_atom, integer_atom; |
633c13c1 |
281 | Atom multiple_atom, atom_pair_atom, incr_atom; |
9acadc2b |
282 | int screen, wwidth, wheight; |
283 | |
284 | Atom strtype = XA_STRING; |
5e36d477 |
285 | Atom sel_atom = XA_PRIMARY; |
3ffcf184 |
286 | Atom expected_type = (Atom)None; |
287 | int expected_format = 8; |
9acadc2b |
288 | |
6aa7b28f |
289 | static const char *translate_atom(Display *disp, Atom atom) |
290 | { |
291 | if (atom == None) |
292 | return "None"; |
293 | else |
294 | return XGetAtomName(disp, atom); |
295 | } |
296 | |
9acadc2b |
297 | /* |
298 | * Returns TRUE if we need to enter an event loop, FALSE otherwise. |
299 | */ |
300 | int init_X(void) { |
301 | Window root; |
302 | int x = 0, y = 0, width = 512, height = 128; |
303 | int i, got = 0; |
304 | XWMHints wm_hints; |
305 | XSizeHints size_hints; |
306 | XClassHint class_hints; |
307 | XTextProperty textprop; |
308 | XGCValues gcv; |
309 | |
310 | /* open the X display */ |
311 | disp = XOpenDisplay (display); |
312 | if (!disp) |
313 | error ("unable to open display"); |
314 | |
3ffcf184 |
315 | targets_atom = XInternAtom(disp, "TARGETS", False); |
acc02b82 |
316 | timestamp_atom = XInternAtom(disp, "TIMESTAMP", False); |
317 | atom_atom = XInternAtom(disp, "ATOM", False); |
e1c1021f |
318 | atom_pair_atom = XInternAtom(disp, "ATOM_PAIR", False); |
319 | multiple_atom = XInternAtom(disp, "MULTIPLE", False); |
acc02b82 |
320 | integer_atom = XInternAtom(disp, "INTEGER", False); |
633c13c1 |
321 | incr_atom = XInternAtom(disp, "INCR", False); |
9acadc2b |
322 | if (mode == UTF8) { |
323 | strtype = XInternAtom(disp, "UTF8_STRING", False); |
9acadc2b |
324 | } else if (mode == CTEXT) { |
325 | strtype = XInternAtom(disp, "COMPOUND_TEXT", False); |
3ffcf184 |
326 | } else if (mode == TARGETS) { |
327 | strtype = targets_atom; |
acc02b82 |
328 | expected_type = atom_atom; |
3ffcf184 |
329 | expected_format = 32; |
330 | } else if (mode == TIMESTAMP) { |
acc02b82 |
331 | strtype = timestamp_atom; |
332 | expected_type = integer_atom; |
3ffcf184 |
333 | expected_format = 32; |
334 | } else if (mode == CUSTOM) { |
acc02b82 |
335 | strtype = XInternAtom(disp, custom_seltype, True); |
336 | if (!strtype) |
337 | error ("atom '%s' does not exist on the server", custom_seltype); |
3ffcf184 |
338 | expected_format = 0; |
9acadc2b |
339 | } |
5e36d477 |
340 | if (use_clipboard) { |
341 | sel_atom = XInternAtom(disp, "CLIPBOARD", False); |
5e36d477 |
342 | } |
9acadc2b |
343 | |
344 | /* get the screen and root-window */ |
345 | screen = DefaultScreen (disp); |
346 | root = RootWindow (disp, screen); |
347 | |
348 | x = y = 0; |
349 | width = height = 10; /* doesn't really matter */ |
350 | |
351 | /* actually create the window */ |
352 | ourwin = XCreateSimpleWindow (disp, root, x, y, width, height,0, |
353 | BlackPixel(disp, screen), |
354 | WhitePixel(disp, screen)); |
355 | |
356 | /* resource class name */ |
357 | class_hints.res_name = lcasename; |
358 | class_hints.res_class = ucasename; |
359 | XSetClassHint (disp, ourwin, &class_hints); |
360 | |
361 | /* do selection fiddling */ |
362 | if (reading) { |
363 | /* |
3a3007a4 |
364 | * We are reading the selection. Call XConvertSelection to |
365 | * request transmission of the selection data in the |
366 | * appropriate format; the X event loop will then wait to |
633c13c1 |
367 | * receive the data from the selection owner. Also we need to |
368 | * make sure we receive PropertyNotify events, for INCR |
369 | * transfers. |
3a3007a4 |
370 | * |
371 | * If there is no selection owner, look in the cut buffer |
372 | * property on the root window. |
9acadc2b |
373 | */ |
633c13c1 |
374 | XSelectInput(disp, ourwin, PropertyChangeMask); |
7d4520e0 |
375 | if (XGetSelectionOwner(disp, sel_atom) != None) { |
9acadc2b |
376 | Atom sel_property = XInternAtom(disp, "VT_SELECTION", False); |
6aa7b28f |
377 | if (verbose) |
378 | fprintf(stderr, "calling XConvertSelection: selection=%s" |
379 | " target=%s property=%s requestor=%08lx\n", |
380 | translate_atom(disp, sel_atom), |
381 | translate_atom(disp, strtype), |
382 | translate_atom(disp, sel_property), |
383 | ourwin); |
5e36d477 |
384 | XConvertSelection(disp, sel_atom, strtype, |
9acadc2b |
385 | sel_property, ourwin, CurrentTime); |
386 | return True; |
7d4520e0 |
387 | } else if (use_cutbuffers) { |
388 | /* No primary selection, so use the cut buffer. */ |
389 | if (verbose) |
390 | fprintf(stderr, "no selection owner: trying cut buffer\n"); |
391 | if (strtype == XA_STRING) |
392 | do_paste(DefaultRootWindow(disp), XA_CUT_BUFFER0, True); |
393 | return False; |
394 | } else { |
395 | /* Last fallback: do nothing. */ |
396 | return False; |
9acadc2b |
397 | } |
398 | } else { |
399 | /* |
7d4520e0 |
400 | * We are writing to the selection, so we establish ourselves |
401 | * as selection owner. |
402 | * |
403 | * Also place the data in CUT_BUFFER0, if it isn't of an |
404 | * exotic type (cut buffers can only take ordinary string |
405 | * data, it turns out) or bigger than our maximum chunk size. |
9acadc2b |
406 | */ |
5e36d477 |
407 | XSetSelectionOwner (disp, sel_atom, ourwin, CurrentTime); |
408 | if (XGetSelectionOwner (disp, sel_atom) != ourwin) |
b3d07da3 |
409 | error ("unable to obtain primary X selection"); |
9acadc2b |
410 | compound_text_atom = XInternAtom(disp, "COMPOUND_TEXT", False); |
7d4520e0 |
411 | if (strtype == XA_STRING && sellen <= sel_delta && use_cutbuffers) { |
9acadc2b |
412 | /* |
413 | * ICCCM-required cut buffer initialisation. |
414 | */ |
464d0c29 |
415 | static const unsigned char emptystring[] = {0}; |
9acadc2b |
416 | XChangeProperty(disp, root, XA_CUT_BUFFER0, |
464d0c29 |
417 | XA_STRING, 8, PropModeAppend, emptystring, 0); |
9acadc2b |
418 | XChangeProperty(disp, root, XA_CUT_BUFFER1, |
464d0c29 |
419 | XA_STRING, 8, PropModeAppend, emptystring, 0); |
9acadc2b |
420 | XChangeProperty(disp, root, XA_CUT_BUFFER2, |
464d0c29 |
421 | XA_STRING, 8, PropModeAppend, emptystring, 0); |
9acadc2b |
422 | XChangeProperty(disp, root, XA_CUT_BUFFER3, |
464d0c29 |
423 | XA_STRING, 8, PropModeAppend, emptystring, 0); |
9acadc2b |
424 | XChangeProperty(disp, root, XA_CUT_BUFFER4, |
464d0c29 |
425 | XA_STRING, 8, PropModeAppend, emptystring, 0); |
9acadc2b |
426 | XChangeProperty(disp, root, XA_CUT_BUFFER5, |
464d0c29 |
427 | XA_STRING, 8, PropModeAppend, emptystring, 0); |
9acadc2b |
428 | XChangeProperty(disp, root, XA_CUT_BUFFER6, |
464d0c29 |
429 | XA_STRING, 8, PropModeAppend, emptystring, 0); |
9acadc2b |
430 | XChangeProperty(disp, root, XA_CUT_BUFFER7, |
464d0c29 |
431 | XA_STRING, 8, PropModeAppend, emptystring, 0); |
9acadc2b |
432 | /* |
433 | * Rotate the cut buffers and add our text in CUT_BUFFER0. |
434 | */ |
435 | XRotateBuffers(disp, 1); |
436 | XStoreBytes(disp, seltext, sellen); |
437 | } |
438 | return True; |
439 | } |
440 | } |
441 | |
8fb6d89b |
442 | void write_data(Window requestor, Atom property, Atom type, int format, |
443 | void *vdata, size_t size) |
444 | { |
445 | int bformat = format / 8; /* bytes per element */ |
446 | unsigned char *data = (unsigned char *)vdata; |
447 | XEvent ev; |
448 | |
7d4520e0 |
449 | if (!use_outgoing_incr || size * bformat <= sel_delta) { |
8fb6d89b |
450 | XChangeProperty(disp, requestor, property, type, format, |
451 | PropModeReplace, data, size); |
452 | } else { |
453 | /* |
454 | * For large data, an incremental transfer as per ICCCM 2.7.2. |
455 | */ |
456 | Cardinal totalsize = size * bformat; |
457 | Cardinal sent, thissize; |
458 | |
459 | /* |
460 | * We're going to need PropertyNotify events on the target |
461 | * window to tell us when to send the next chunk. |
462 | */ |
463 | XSelectInput(disp, requestor, PropertyChangeMask); |
464 | |
465 | /* |
466 | * Start by sending a single 32-bit word with type INCR giving |
467 | * the total size in bytes. |
468 | */ |
469 | XChangeProperty(disp, requestor, property, incr_atom, 32, |
470 | PropModeReplace, (unsigned char *)&totalsize, 1); |
471 | |
472 | /* |
473 | * Now set up an entry in our list of ongoing incremental |
474 | * transfers, so that whenever that property is deleted, we'll |
475 | * send the next batch. |
476 | */ |
477 | if (nincrs >= incrsize) { |
478 | incrsize = nincrs * 9 / 8 + 16; |
479 | incrs = realloc(incrs, incrsize * sizeof(*incrs)); |
480 | if (!incrs) |
481 | error ("out of memory"); |
482 | } |
483 | incrs[nincrs].window = requestor; |
484 | incrs[nincrs].property = property; |
485 | incrs[nincrs].type = type; |
486 | incrs[nincrs].format = format; |
487 | incrs[nincrs].size = totalsize; |
488 | incrs[nincrs].data = malloc(totalsize); |
489 | if (!incrs[nincrs].data) |
490 | error("out of memory"); |
491 | memcpy(incrs[nincrs].data, data, size); |
492 | nincrs++; |
493 | } |
494 | } |
495 | |
e1c1021f |
496 | Atom convert_sel_inner(Window requestor, Atom target, Atom property) { |
497 | if (target == strtype) { |
8fb6d89b |
498 | write_data(requestor, property, strtype, 8, seltext, sellen); |
e1c1021f |
499 | return property; |
500 | } else if (target == compound_text_atom && convert_to_ctext) { |
501 | XTextProperty tp; |
8fb6d89b |
502 | XmbTextListToTextProperty(disp, &seltext, 1, XCompoundTextStyle, &tp); |
503 | write_data(requestor, property, target, tp.format, tp.value,tp.nitems); |
e1c1021f |
504 | return property; |
505 | } else if (target == targets_atom) { |
506 | Atom targets[16]; |
507 | int len = 0; |
508 | targets[len++] = timestamp_atom; |
509 | targets[len++] = targets_atom; |
510 | targets[len++] = multiple_atom; |
511 | targets[len++] = strtype; |
512 | if (strtype != compound_text_atom && convert_to_ctext) |
513 | targets[len++] = compound_text_atom; |
8fb6d89b |
514 | write_data(requestor, property, atom_atom, 32, targets, len); |
e1c1021f |
515 | return property; |
516 | } else if (target == timestamp_atom) { |
517 | Time rettime = CurrentTime; |
8fb6d89b |
518 | write_data(requestor, property, integer_atom, 32, &rettime, 1); |
e1c1021f |
519 | return property; |
520 | } else { |
521 | return None; |
522 | } |
523 | } |
524 | |
525 | Atom convert_sel_outer(Window requestor, Atom target, Atom property) { |
461ec27a |
526 | /* |
527 | * ICCCM 2.2 says that obsolete clients requesting the selection |
528 | * request may not specify a property name under which they want |
529 | * the data written to their window; selection owners are |
530 | * encouraged to support such clients by reusing the selection |
531 | * target name as the property. |
532 | */ |
533 | if (property == None) |
534 | property = target; |
535 | |
e1c1021f |
536 | if (target == multiple_atom) { |
537 | /* |
538 | * Support for the MULTIPLE selection type, since it's |
539 | * specified as required in the ICCCM. Completely |
540 | * untested, though, because I have no idea of what X |
541 | * application might implement it for me to test against. |
542 | */ |
543 | |
7d4520e0 |
544 | int size = sel_delta; |
e1c1021f |
545 | Atom actual_type; |
546 | int actual_format, i; |
464d0c29 |
547 | unsigned long nitems, bytes_after, nread; |
e1c1021f |
548 | unsigned char *data; |
549 | Atom *adata; |
550 | |
b06414b8 |
551 | if (property == (Atom)None) |
552 | return None; /* ICCCM says this isn't allowed */ |
553 | |
e1c1021f |
554 | /* |
555 | * Fetch the requestor's window property giving a list of |
556 | * selection requests. |
557 | */ |
558 | while (XGetWindowProperty(disp, requestor, property, 0, size, |
559 | False, AnyPropertyType, &actual_type, |
560 | &actual_format, &nitems, &bytes_after, |
561 | (unsigned char **) &data) == Success && |
562 | nitems * (actual_format / 8) == size) { |
563 | XFree(data); |
564 | size *= 3 / 2; |
565 | } |
566 | |
567 | if (actual_type != atom_pair_atom || actual_format != 32) { |
568 | XFree(data); |
569 | return None; |
570 | } |
571 | |
572 | adata = (Atom *)data; |
573 | |
464d0c29 |
574 | for (i = 0; i+1 < (long)nitems; i += 2) { |
b06414b8 |
575 | if (adata[i+1] != (Atom)None) /* ICCCM says this isn't allowed */ |
576 | adata[i+1] = convert_sel_inner(requestor, adata[i], |
577 | adata[i+1]); |
e1c1021f |
578 | } |
579 | |
580 | XChangeProperty (disp, requestor, property, |
581 | atom_pair_atom, 32, PropModeReplace, |
582 | data, nitems); |
583 | |
584 | XFree(data); |
585 | |
586 | return property; |
587 | } else { |
b06414b8 |
588 | if (property == (Atom)None) |
589 | property = target; /* ICCCM says this is a sensible default */ |
e1c1021f |
590 | return convert_sel_inner(requestor, target, property); |
591 | } |
592 | } |
593 | |
9acadc2b |
594 | void run_X(void) { |
595 | XEvent ev, e2; |
8fb6d89b |
596 | int i, j; |
9acadc2b |
597 | |
598 | while (1) { |
599 | XNextEvent (disp, &ev); |
600 | if (reading) { |
601 | switch (ev.type) { |
602 | case SelectionNotify: |
6aa7b28f |
603 | if (verbose) |
604 | fprintf(stderr, "got SelectionNotify: requestor=%08lx " |
605 | "selection=%s target=%s property=%s\n", |
606 | ev.xselection.requestor, |
607 | translate_atom(disp, ev.xselection.selection), |
608 | translate_atom(disp, ev.xselection.target), |
609 | translate_atom(disp, ev.xselection.property)); |
610 | |
9acadc2b |
611 | if (ev.xselection.property != None) |
612 | do_paste(ev.xselection.requestor, |
633c13c1 |
613 | ev.xselection.property, False); |
9acadc2b |
614 | return; |
615 | } |
616 | } else { |
4bf3e4f3 |
617 | int have_ownership = True; |
f8381827 |
618 | |
9acadc2b |
619 | switch (ev.type) { |
620 | case SelectionClear: |
621 | /* Selection has been cleared by another app. */ |
4bf3e4f3 |
622 | have_ownership = False; |
f8381827 |
623 | break; |
9acadc2b |
624 | case SelectionRequest: |
4bf3e4f3 |
625 | if (have_ownership) { |
626 | e2.xselection.type = SelectionNotify; |
627 | e2.xselection.requestor = ev.xselectionrequest.requestor; |
628 | e2.xselection.selection = ev.xselectionrequest.selection; |
629 | e2.xselection.target = ev.xselectionrequest.target; |
630 | e2.xselection.time = ev.xselectionrequest.time; |
631 | e2.xselection.property = |
632 | convert_sel_outer(ev.xselectionrequest.requestor, |
633 | ev.xselectionrequest.target, |
634 | ev.xselectionrequest.property); |
635 | XSendEvent (disp, ev.xselectionrequest.requestor, |
636 | False, 0, &e2); |
637 | } |
8fb6d89b |
638 | break; |
639 | case PropertyNotify: |
640 | for (i = j = 0; i < nincrs; i++) { |
641 | int keep = True; |
642 | if (incrs[i].window == ev.xproperty.window && |
643 | incrs[i].property == ev.xproperty.atom && |
644 | ev.xproperty.state == PropertyDelete) { |
645 | size_t thissize = incrs[i].size; |
7d4520e0 |
646 | if (thissize > sel_delta) |
647 | thissize = sel_delta; |
8fb6d89b |
648 | |
649 | XChangeProperty(disp, |
650 | incrs[i].window, incrs[i].property, |
651 | incrs[i].type, incrs[i].format, |
652 | PropModeReplace, incrs[i].data, |
653 | thissize / (incrs[i].format/8)); |
654 | |
655 | if (thissize == 0) { |
656 | /* |
657 | * If we've just sent a zero-length block, |
658 | * the incremental transfer is over and we |
659 | * should delete this entry. |
660 | */ |
661 | keep = False; |
662 | } |
663 | |
664 | incrs[i].data += thissize; |
665 | incrs[i].size -= thissize; |
666 | } |
667 | if (keep) { |
668 | if (j != i) |
669 | incrs[j] = incrs[i]; |
670 | j++; |
671 | } |
672 | } |
673 | nincrs = j; |
674 | break; |
9acadc2b |
675 | } |
4bf3e4f3 |
676 | if (nincrs == 0 && !have_ownership) |
f8381827 |
677 | return; |
9acadc2b |
678 | } |
679 | } |
680 | } |
681 | |
682 | void done_X(void) { |
683 | int i; |
684 | |
685 | if (ourwin != None) |
686 | XDestroyWindow (disp, ourwin); |
687 | if (disp) |
688 | XCloseDisplay (disp); |
689 | } |
690 | |
633c13c1 |
691 | void do_paste(Window window, Atom property, int cutbuffer) { |
9acadc2b |
692 | Atom actual_type; |
693 | int actual_format, i; |
464d0c29 |
694 | unsigned long nitems, bytes_after, nread; |
9acadc2b |
695 | unsigned char *data; |
633c13c1 |
696 | int incremental = False; |
697 | XEvent ev; |
9acadc2b |
698 | |
699 | nread = 0; |
7d4520e0 |
700 | while (XGetWindowProperty(disp, window, property, nread / 4, sel_delta / 4, |
633c13c1 |
701 | !cutbuffer, AnyPropertyType, &actual_type, |
9acadc2b |
702 | &actual_format, &nitems, &bytes_after, |
703 | (unsigned char **) &data) == Success) { |
6aa7b28f |
704 | if (verbose) |
705 | fprintf(stderr, "got %ld items of %d-byte data, type=%s;" |
706 | " %ld to go\n", nitems, actual_format, |
707 | translate_atom(disp, actual_type), bytes_after); |
708 | |
633c13c1 |
709 | /* |
710 | * ICCCM 2.7.2: if we receive data with the type atom set to |
711 | * INCR, it indicates that the actual data will arrive in |
712 | * multiple chunks, terminating with a zero-length one. |
713 | * Between each pair, we must wait for a PropertyNotify event |
714 | * which tells us that the next chunk has arrived. |
715 | */ |
716 | if (actual_type == incr_atom && !cutbuffer) { |
717 | incremental = True; |
718 | /* |
719 | * Immediately wait for the first chunk of real data. |
720 | */ |
721 | do { |
722 | XMaskEvent(disp, PropertyChangeMask, &ev); |
723 | } while (ev.xproperty.state != PropertyNewValue); |
724 | /* |
725 | * And loop straight back round to read it. |
726 | */ |
727 | continue; |
728 | } |
729 | |
3ffcf184 |
730 | if (nitems > 0) { |
5340832d |
731 | /* |
732 | * We expect all returned chunks of data to be |
733 | * multiples of 4 bytes (because we can only request |
734 | * the subsequent starting offset in 4-byte |
735 | * increments). Of course you can store an odd number |
736 | * of bytes in a selection, so this can't be the case |
737 | * every time XGetWindowProperty returns; but it |
738 | * should be the case every time it returns _and there |
739 | * is more data to come_. |
740 | * |
741 | * Hence, whenever XGetWindowProperty returns, we |
742 | * verify that the size of the data returned _last_ |
743 | * time was divisible by 4. |
744 | */ |
745 | if ((nread & 3) != 0) { |
746 | error("unexpected data size: %d read (not a multiple" |
b3d07da3 |
747 | " of 4), but more to come", nread); |
5340832d |
748 | } |
749 | |
3ffcf184 |
750 | if (expected_type != (Atom)None && actual_type != expected_type) { |
6aa7b28f |
751 | const char *expout = translate_atom(disp, expected_type); |
752 | const char *gotout = translate_atom(disp, actual_type); |
b3d07da3 |
753 | error("unexpected data type: expected %s, got %s", |
3ffcf184 |
754 | expout, gotout); |
755 | } |
756 | if (expected_format && expected_format != actual_format) { |
b3d07da3 |
757 | error("unexpected data format: expected %d-bit, got %d-bit", |
3ffcf184 |
758 | expected_format, actual_format); |
759 | } |
760 | } |
761 | |
762 | if (nitems > 0) { |
763 | if (mode == TARGETS) { |
764 | assert(actual_format == 32); |
765 | int i; |
766 | for (i = 0; i < nitems; i++) { |
767 | Atom x = ((Atom *)data)[i]; |
6aa7b28f |
768 | printf("%s\n", translate_atom(disp, x)); |
3ffcf184 |
769 | } |
770 | } else if (mode == TIMESTAMP) { |
771 | assert(actual_format == 32); |
772 | Time x = ((Time *)data)[0]; |
773 | printf("%lu\n", (unsigned long)x); |
774 | } else { |
775 | fwrite(data, actual_format / 8, nitems, stdout); |
776 | nread += nitems * actual_format / 8; |
777 | } |
9acadc2b |
778 | } |
779 | XFree(data); |
05ecc810 |
780 | if (bytes_after == 0) { |
633c13c1 |
781 | /* |
782 | * We've come to the end of the property we're reading. |
783 | */ |
784 | if (incremental) { |
785 | /* |
786 | * For an incremental transfer, this means we wait for |
787 | * another property to be dumped in the same place on |
788 | * our window, and loop round again reading that. The |
789 | * exception is if the total length of the property we |
790 | * got was zero, which signals the end. |
791 | */ |
792 | if (nread == 0 && nitems == 0) |
793 | break; /* all done */ |
794 | |
795 | /* otherwise wait for the next chunk */ |
796 | do { |
797 | XMaskEvent(disp, PropertyChangeMask, &ev); |
798 | } while (ev.xproperty.state != PropertyNewValue); |
799 | |
800 | /* which we read from the beginning */ |
801 | nread = 0; |
802 | } else { |
05ecc810 |
803 | break; |
633c13c1 |
804 | } |
05ecc810 |
805 | } |
9acadc2b |
806 | } |
807 | } |