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> |
13 | |
14 | #include <X11/X.h> |
8fb6d89b |
15 | #include <X11/Intrinsic.h> |
9acadc2b |
16 | #include <X11/Xlib.h> |
17 | #include <X11/Xutil.h> |
18 | #include <X11/Xatom.h> |
19 | |
20 | int init_X(void); |
21 | void run_X(void); |
22 | void done_X(void); |
23 | void full_redraw(void); |
24 | void do_paste(Window window, Atom property, int Delete); |
25 | |
26 | char *pname; /* program name */ |
27 | |
28 | void error (char *fmt, ...); |
29 | |
30 | /* set from command-line parameters */ |
31 | char *display = NULL; |
3ffcf184 |
32 | enum { STRING, CTEXT, UTF8, TARGETS, TIMESTAMP, CUSTOM } mode = STRING; |
5e36d477 |
33 | int use_clipboard = False; |
3ffcf184 |
34 | char *custom_seltype = NULL; |
acc02b82 |
35 | int fork_when_writing = True; |
9acadc2b |
36 | |
37 | /* selection data */ |
38 | char *seltext; |
39 | int sellen, selsize; |
2e37f64c |
40 | #define SELDELTA 16384 |
9acadc2b |
41 | |
8fb6d89b |
42 | /* incremental transfers still pending when we return to the event loop */ |
43 | struct incr { |
44 | Window window; |
45 | Atom property; |
46 | Atom type; |
47 | int format; |
48 | unsigned char *data; |
49 | size_t size; |
50 | } *incrs = NULL; |
51 | int nincrs = 0, incrsize = 0; |
52 | |
9acadc2b |
53 | /* functional parameters */ |
54 | int reading; /* read instead of writing? */ |
55 | int convert_to_ctext = True; /* Xmb convert to compound text? */ |
6aa7b28f |
56 | int verbose; |
9acadc2b |
57 | |
da0f8522 |
58 | const char usagemsg[] = |
59 | "usage: xcopy [ -r ] [ -u | -c ] [ -C ]\n" |
3ffcf184 |
60 | "where: -r read X selection and print on stdout\n" |
61 | " no -r read stdin and store in X selection\n" |
62 | " -u work with UTF8_STRING type selections\n" |
63 | " -c work with COMPOUND_TEXT type selections\n" |
64 | " -C suppress automatic conversion to COMPOUND_TEXT\n" |
65 | " -b read the CLIPBOARD rather than the PRIMARY selection\n" |
66 | " -t get the list of targets available to retrieve\n" |
67 | " -T get the time stamp of the selection contents\n" |
68 | " -a atom get an arbitrary form of the selection data\n" |
acc02b82 |
69 | " -F do not fork in write mode\n" |
6aa7b28f |
70 | " -v proceed verbosely when reading selection\n" |
c52f9fb9 |
71 | " also: xcopy --version report version number\n" |
72 | " xcopy --help display this help text\n" |
73 | " xcopy --licence display the (MIT) licence text\n" |
da0f8522 |
74 | ; |
75 | |
76 | void usage(void) { |
77 | fputs(usagemsg, stdout); |
78 | } |
79 | |
80 | const char licencemsg[] = |
b3d07da3 |
81 | "xcopy is copyright 2001-2004,2008 Simon Tatham.\n" |
da0f8522 |
82 | "\n" |
83 | "Permission is hereby granted, free of charge, to any person\n" |
84 | "obtaining a copy of this software and associated documentation files\n" |
85 | "(the \"Software\"), to deal in the Software without restriction,\n" |
86 | "including without limitation the rights to use, copy, modify, merge,\n" |
87 | "publish, distribute, sublicense, and/or sell copies of the Software,\n" |
88 | "and to permit persons to whom the Software is furnished to do so,\n" |
89 | "subject to the following conditions:\n" |
90 | "\n" |
91 | "The above copyright notice and this permission notice shall be\n" |
92 | "included in all copies or substantial portions of the Software.\n" |
93 | "\n" |
94 | "THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND,\n" |
95 | "EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF\n" |
96 | "MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND\n" |
97 | "NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS\n" |
98 | "BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN\n" |
99 | "ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN\n" |
100 | "CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE\n" |
101 | "SOFTWARE.\n" |
102 | ; |
103 | |
104 | void licence(void) { |
105 | fputs(licencemsg, stdout); |
106 | } |
107 | |
108 | void version(void) { |
109 | #define SVN_REV "$Revision$" |
110 | char rev[sizeof(SVN_REV)]; |
111 | char *p, *q; |
112 | |
113 | strcpy(rev, SVN_REV); |
114 | |
115 | for (p = rev; *p && *p != ':'; p++); |
116 | if (*p) { |
117 | p++; |
118 | while (*p && isspace(*p)) p++; |
119 | for (q = p; *q && *q != '$'; q++); |
120 | if (*q) *q = '\0'; |
121 | printf("xcopy revision %s\n", p); |
122 | } else { |
123 | printf("xcopy: unknown version\n"); |
124 | } |
125 | } |
126 | |
9acadc2b |
127 | int main(int ac, char **av) { |
128 | int n; |
129 | int eventloop; |
130 | |
131 | pname = *av; |
132 | |
133 | /* parse the command line arguments */ |
3ffcf184 |
134 | while (--ac > 0) { |
9acadc2b |
135 | char *p = *++av; |
136 | |
137 | if (!strcmp(p, "-display") || !strcmp(p, "-disp")) { |
138 | if (!av[1]) |
139 | error ("option `%s' expects a parameter", p); |
140 | display = *++av, --ac; |
141 | } else if (!strcmp(p, "-r")) { |
142 | reading = True; |
143 | } else if (!strcmp(p, "-u")) { |
144 | mode = UTF8; |
145 | } else if (!strcmp(p, "-c")) { |
146 | mode = CTEXT; |
147 | } else if (!strcmp(p, "-C")) { |
148 | convert_to_ctext = False; |
5e36d477 |
149 | } else if (!strcmp(p, "-b")) { |
150 | use_clipboard = True; |
3ffcf184 |
151 | } else if (!strcmp(p, "-t")) { |
152 | mode = TARGETS; |
153 | } else if (!strcmp(p, "-T")) { |
154 | mode = TIMESTAMP; |
155 | } else if (!strcmp(p, "-a")) { |
156 | if (--ac > 0) |
157 | custom_seltype = *++av; |
158 | else |
159 | error ("expected an argument to `-a'"); |
160 | mode = CUSTOM; |
acc02b82 |
161 | } else if (!strcmp(p, "-F")) { |
162 | fork_when_writing = False; |
6aa7b28f |
163 | } else if (!strcmp(p, "-v")) { |
164 | verbose = True; |
da0f8522 |
165 | } else if (!strcmp(p, "--help")) { |
166 | usage(); |
167 | return 0; |
168 | } else if (!strcmp(p, "--version")) { |
169 | version(); |
170 | return 0; |
171 | } else if (!strcmp(p, "--licence") || !strcmp(p, "--license")) { |
172 | licence(); |
173 | return 0; |
9acadc2b |
174 | } else if (*p=='-') { |
175 | error ("unrecognised option `%s'", p); |
176 | } else { |
177 | error ("no parameters required"); |
178 | } |
179 | } |
180 | |
181 | if (!reading) { |
3ffcf184 |
182 | if (mode == TARGETS || mode == TIMESTAMP || mode == CUSTOM) { |
183 | error ("%s not supported in writing mode; use -r", |
184 | (mode == TARGETS ? "-t" : |
185 | mode == TIMESTAMP ? "-T" : |
186 | /* mode == CUSTOM ? */ "-a")); |
187 | } |
188 | } |
189 | |
190 | if (!reading) { |
9acadc2b |
191 | seltext = malloc(SELDELTA); |
192 | if (!seltext) |
193 | error ("out of memory"); |
194 | selsize = SELDELTA; |
195 | sellen = 0; |
196 | do { |
197 | n = fread(seltext+sellen, 1, selsize-sellen, stdin); |
198 | sellen += n; |
199 | if (sellen >= selsize) { |
200 | seltext = realloc(seltext, selsize += SELDELTA); |
201 | if (!seltext) |
202 | error ("out of memory"); |
203 | } |
204 | } while (n > 0); |
205 | if (sellen == selsize) { |
206 | seltext = realloc(seltext, selsize += SELDELTA); |
207 | if (!seltext) |
208 | error ("out of memory"); |
209 | } |
210 | seltext[sellen] = '\0'; |
211 | } |
212 | |
213 | eventloop = init_X(); |
acc02b82 |
214 | if (!reading && fork_when_writing) { |
9acadc2b |
215 | /* |
216 | * If we are writing the selection, we must go into the |
217 | * background now. |
218 | */ |
219 | int pid = fork(); |
220 | if (pid < 0) { |
221 | error("unable to fork: %s", strerror(errno)); |
222 | } else if (pid > 0) { |
223 | /* |
224 | * we are the parent; just exit |
225 | */ |
226 | return 0; |
227 | } |
228 | /* |
229 | * we are the child |
230 | */ |
231 | close(0); |
232 | close(1); |
233 | close(2); |
234 | chdir("/"); |
235 | } |
236 | if (eventloop) |
237 | run_X(); |
238 | done_X(); |
239 | return 0; |
240 | } |
241 | |
242 | /* handle errors */ |
243 | |
244 | void error (char *fmt, ...) { |
245 | va_list ap; |
246 | char errbuf[200]; |
247 | |
248 | done_X(); |
249 | va_start (ap, fmt); |
250 | vsprintf (errbuf, fmt, ap); |
251 | va_end (ap); |
252 | fprintf (stderr, "%s: %s\n", pname, errbuf); |
253 | exit (1); |
254 | } |
255 | |
256 | /* begin the X interface */ |
257 | |
258 | char *lcasename = "xcopy"; |
259 | char *ucasename = "XCopy"; |
260 | |
261 | Display *disp = NULL; |
262 | Window ourwin = None; |
acc02b82 |
263 | Atom compound_text_atom, targets_atom, timestamp_atom, atom_atom, integer_atom; |
633c13c1 |
264 | Atom multiple_atom, atom_pair_atom, incr_atom; |
9acadc2b |
265 | int screen, wwidth, wheight; |
266 | |
267 | Atom strtype = XA_STRING; |
5e36d477 |
268 | Atom sel_atom = XA_PRIMARY; |
3ffcf184 |
269 | Atom expected_type = (Atom)None; |
270 | int expected_format = 8; |
9acadc2b |
271 | |
6aa7b28f |
272 | static const char *translate_atom(Display *disp, Atom atom) |
273 | { |
274 | if (atom == None) |
275 | return "None"; |
276 | else |
277 | return XGetAtomName(disp, atom); |
278 | } |
279 | |
9acadc2b |
280 | /* |
281 | * Returns TRUE if we need to enter an event loop, FALSE otherwise. |
282 | */ |
283 | int init_X(void) { |
284 | Window root; |
285 | int x = 0, y = 0, width = 512, height = 128; |
286 | int i, got = 0; |
287 | XWMHints wm_hints; |
288 | XSizeHints size_hints; |
289 | XClassHint class_hints; |
290 | XTextProperty textprop; |
291 | XGCValues gcv; |
292 | |
293 | /* open the X display */ |
294 | disp = XOpenDisplay (display); |
295 | if (!disp) |
296 | error ("unable to open display"); |
297 | |
3ffcf184 |
298 | targets_atom = XInternAtom(disp, "TARGETS", False); |
acc02b82 |
299 | timestamp_atom = XInternAtom(disp, "TIMESTAMP", False); |
300 | atom_atom = XInternAtom(disp, "ATOM", False); |
e1c1021f |
301 | atom_pair_atom = XInternAtom(disp, "ATOM_PAIR", False); |
302 | multiple_atom = XInternAtom(disp, "MULTIPLE", False); |
acc02b82 |
303 | integer_atom = XInternAtom(disp, "INTEGER", False); |
633c13c1 |
304 | incr_atom = XInternAtom(disp, "INCR", False); |
9acadc2b |
305 | if (mode == UTF8) { |
306 | strtype = XInternAtom(disp, "UTF8_STRING", False); |
9acadc2b |
307 | } else if (mode == CTEXT) { |
308 | strtype = XInternAtom(disp, "COMPOUND_TEXT", False); |
3ffcf184 |
309 | } else if (mode == TARGETS) { |
310 | strtype = targets_atom; |
acc02b82 |
311 | expected_type = atom_atom; |
3ffcf184 |
312 | expected_format = 32; |
313 | } else if (mode == TIMESTAMP) { |
acc02b82 |
314 | strtype = timestamp_atom; |
315 | expected_type = integer_atom; |
3ffcf184 |
316 | expected_format = 32; |
317 | } else if (mode == CUSTOM) { |
acc02b82 |
318 | strtype = XInternAtom(disp, custom_seltype, True); |
319 | if (!strtype) |
320 | error ("atom '%s' does not exist on the server", custom_seltype); |
3ffcf184 |
321 | expected_format = 0; |
9acadc2b |
322 | } |
5e36d477 |
323 | if (use_clipboard) { |
324 | sel_atom = XInternAtom(disp, "CLIPBOARD", False); |
5e36d477 |
325 | } |
9acadc2b |
326 | |
327 | /* get the screen and root-window */ |
328 | screen = DefaultScreen (disp); |
329 | root = RootWindow (disp, screen); |
330 | |
331 | x = y = 0; |
332 | width = height = 10; /* doesn't really matter */ |
333 | |
334 | /* actually create the window */ |
335 | ourwin = XCreateSimpleWindow (disp, root, x, y, width, height,0, |
336 | BlackPixel(disp, screen), |
337 | WhitePixel(disp, screen)); |
338 | |
339 | /* resource class name */ |
340 | class_hints.res_name = lcasename; |
341 | class_hints.res_class = ucasename; |
342 | XSetClassHint (disp, ourwin, &class_hints); |
343 | |
344 | /* do selection fiddling */ |
345 | if (reading) { |
346 | /* |
3a3007a4 |
347 | * We are reading the selection. Call XConvertSelection to |
348 | * request transmission of the selection data in the |
349 | * appropriate format; the X event loop will then wait to |
633c13c1 |
350 | * receive the data from the selection owner. Also we need to |
351 | * make sure we receive PropertyNotify events, for INCR |
352 | * transfers. |
3a3007a4 |
353 | * |
354 | * If there is no selection owner, look in the cut buffer |
355 | * property on the root window. |
9acadc2b |
356 | */ |
633c13c1 |
357 | XSelectInput(disp, ourwin, PropertyChangeMask); |
5e36d477 |
358 | if (XGetSelectionOwner(disp, sel_atom) == None) { |
9acadc2b |
359 | /* No primary selection, so use the cut buffer. */ |
6aa7b28f |
360 | if (verbose) |
361 | fprintf(stderr, "no selection owner: trying cut buffer\n"); |
3ffcf184 |
362 | if (strtype == XA_STRING) |
633c13c1 |
363 | do_paste(DefaultRootWindow(disp), XA_CUT_BUFFER0, True); |
9acadc2b |
364 | return False; |
365 | } else { |
366 | Atom sel_property = XInternAtom(disp, "VT_SELECTION", False); |
6aa7b28f |
367 | if (verbose) |
368 | fprintf(stderr, "calling XConvertSelection: selection=%s" |
369 | " target=%s property=%s requestor=%08lx\n", |
370 | translate_atom(disp, sel_atom), |
371 | translate_atom(disp, strtype), |
372 | translate_atom(disp, sel_property), |
373 | ourwin); |
5e36d477 |
374 | XConvertSelection(disp, sel_atom, strtype, |
9acadc2b |
375 | sel_property, ourwin, CurrentTime); |
376 | return True; |
377 | } |
378 | } else { |
379 | /* |
380 | * We are writing to the selection, so we establish |
381 | * ourselves as selection owner. Also place the data in |
382 | * CUT_BUFFER0, if it isn't of an exotic type (cut buffers |
383 | * can only take ordinary string data, it turns out). |
384 | */ |
5e36d477 |
385 | XSetSelectionOwner (disp, sel_atom, ourwin, CurrentTime); |
386 | if (XGetSelectionOwner (disp, sel_atom) != ourwin) |
b3d07da3 |
387 | error ("unable to obtain primary X selection"); |
9acadc2b |
388 | compound_text_atom = XInternAtom(disp, "COMPOUND_TEXT", False); |
389 | if (strtype == XA_STRING) { |
390 | /* |
391 | * ICCCM-required cut buffer initialisation. |
392 | */ |
393 | XChangeProperty(disp, root, XA_CUT_BUFFER0, |
394 | XA_STRING, 8, PropModeAppend, "", 0); |
395 | XChangeProperty(disp, root, XA_CUT_BUFFER1, |
396 | XA_STRING, 8, PropModeAppend, "", 0); |
397 | XChangeProperty(disp, root, XA_CUT_BUFFER2, |
398 | XA_STRING, 8, PropModeAppend, "", 0); |
399 | XChangeProperty(disp, root, XA_CUT_BUFFER3, |
400 | XA_STRING, 8, PropModeAppend, "", 0); |
401 | XChangeProperty(disp, root, XA_CUT_BUFFER4, |
402 | XA_STRING, 8, PropModeAppend, "", 0); |
403 | XChangeProperty(disp, root, XA_CUT_BUFFER5, |
404 | XA_STRING, 8, PropModeAppend, "", 0); |
405 | XChangeProperty(disp, root, XA_CUT_BUFFER6, |
406 | XA_STRING, 8, PropModeAppend, "", 0); |
407 | XChangeProperty(disp, root, XA_CUT_BUFFER7, |
408 | XA_STRING, 8, PropModeAppend, "", 0); |
409 | /* |
410 | * Rotate the cut buffers and add our text in CUT_BUFFER0. |
411 | */ |
412 | XRotateBuffers(disp, 1); |
413 | XStoreBytes(disp, seltext, sellen); |
414 | } |
415 | return True; |
416 | } |
417 | } |
418 | |
8fb6d89b |
419 | void write_data(Window requestor, Atom property, Atom type, int format, |
420 | void *vdata, size_t size) |
421 | { |
422 | int bformat = format / 8; /* bytes per element */ |
423 | unsigned char *data = (unsigned char *)vdata; |
424 | XEvent ev; |
425 | |
426 | if (size * bformat <= SELDELTA) { |
427 | XChangeProperty(disp, requestor, property, type, format, |
428 | PropModeReplace, data, size); |
429 | } else { |
430 | /* |
431 | * For large data, an incremental transfer as per ICCCM 2.7.2. |
432 | */ |
433 | Cardinal totalsize = size * bformat; |
434 | Cardinal sent, thissize; |
435 | |
436 | /* |
437 | * We're going to need PropertyNotify events on the target |
438 | * window to tell us when to send the next chunk. |
439 | */ |
440 | XSelectInput(disp, requestor, PropertyChangeMask); |
441 | |
442 | /* |
443 | * Start by sending a single 32-bit word with type INCR giving |
444 | * the total size in bytes. |
445 | */ |
446 | XChangeProperty(disp, requestor, property, incr_atom, 32, |
447 | PropModeReplace, (unsigned char *)&totalsize, 1); |
448 | |
449 | /* |
450 | * Now set up an entry in our list of ongoing incremental |
451 | * transfers, so that whenever that property is deleted, we'll |
452 | * send the next batch. |
453 | */ |
454 | if (nincrs >= incrsize) { |
455 | incrsize = nincrs * 9 / 8 + 16; |
456 | incrs = realloc(incrs, incrsize * sizeof(*incrs)); |
457 | if (!incrs) |
458 | error ("out of memory"); |
459 | } |
460 | incrs[nincrs].window = requestor; |
461 | incrs[nincrs].property = property; |
462 | incrs[nincrs].type = type; |
463 | incrs[nincrs].format = format; |
464 | incrs[nincrs].size = totalsize; |
465 | incrs[nincrs].data = malloc(totalsize); |
466 | if (!incrs[nincrs].data) |
467 | error("out of memory"); |
468 | memcpy(incrs[nincrs].data, data, size); |
469 | nincrs++; |
470 | } |
471 | } |
472 | |
e1c1021f |
473 | Atom convert_sel_inner(Window requestor, Atom target, Atom property) { |
474 | if (target == strtype) { |
8fb6d89b |
475 | write_data(requestor, property, strtype, 8, seltext, sellen); |
e1c1021f |
476 | return property; |
477 | } else if (target == compound_text_atom && convert_to_ctext) { |
478 | XTextProperty tp; |
8fb6d89b |
479 | XmbTextListToTextProperty(disp, &seltext, 1, XCompoundTextStyle, &tp); |
480 | write_data(requestor, property, target, tp.format, tp.value,tp.nitems); |
e1c1021f |
481 | return property; |
482 | } else if (target == targets_atom) { |
483 | Atom targets[16]; |
484 | int len = 0; |
485 | targets[len++] = timestamp_atom; |
486 | targets[len++] = targets_atom; |
487 | targets[len++] = multiple_atom; |
488 | targets[len++] = strtype; |
489 | if (strtype != compound_text_atom && convert_to_ctext) |
490 | targets[len++] = compound_text_atom; |
8fb6d89b |
491 | write_data(requestor, property, atom_atom, 32, targets, len); |
e1c1021f |
492 | return property; |
493 | } else if (target == timestamp_atom) { |
494 | Time rettime = CurrentTime; |
8fb6d89b |
495 | write_data(requestor, property, integer_atom, 32, &rettime, 1); |
e1c1021f |
496 | return property; |
497 | } else { |
498 | return None; |
499 | } |
500 | } |
501 | |
502 | Atom convert_sel_outer(Window requestor, Atom target, Atom property) { |
503 | if (target == multiple_atom) { |
504 | /* |
505 | * Support for the MULTIPLE selection type, since it's |
506 | * specified as required in the ICCCM. Completely |
507 | * untested, though, because I have no idea of what X |
508 | * application might implement it for me to test against. |
509 | */ |
510 | |
511 | int size = SELDELTA; |
512 | Atom actual_type; |
513 | int actual_format, i; |
514 | long nitems, bytes_after, nread; |
515 | unsigned char *data; |
516 | Atom *adata; |
517 | |
b06414b8 |
518 | if (property == (Atom)None) |
519 | return None; /* ICCCM says this isn't allowed */ |
520 | |
e1c1021f |
521 | /* |
522 | * Fetch the requestor's window property giving a list of |
523 | * selection requests. |
524 | */ |
525 | while (XGetWindowProperty(disp, requestor, property, 0, size, |
526 | False, AnyPropertyType, &actual_type, |
527 | &actual_format, &nitems, &bytes_after, |
528 | (unsigned char **) &data) == Success && |
529 | nitems * (actual_format / 8) == size) { |
530 | XFree(data); |
531 | size *= 3 / 2; |
532 | } |
533 | |
534 | if (actual_type != atom_pair_atom || actual_format != 32) { |
535 | XFree(data); |
536 | return None; |
537 | } |
538 | |
539 | adata = (Atom *)data; |
540 | |
541 | for (i = 0; i+1 < nitems; i += 2) { |
b06414b8 |
542 | if (adata[i+1] != (Atom)None) /* ICCCM says this isn't allowed */ |
543 | adata[i+1] = convert_sel_inner(requestor, adata[i], |
544 | adata[i+1]); |
e1c1021f |
545 | } |
546 | |
547 | XChangeProperty (disp, requestor, property, |
548 | atom_pair_atom, 32, PropModeReplace, |
549 | data, nitems); |
550 | |
551 | XFree(data); |
552 | |
553 | return property; |
554 | } else { |
b06414b8 |
555 | if (property == (Atom)None) |
556 | property = target; /* ICCCM says this is a sensible default */ |
e1c1021f |
557 | return convert_sel_inner(requestor, target, property); |
558 | } |
559 | } |
560 | |
9acadc2b |
561 | void run_X(void) { |
562 | XEvent ev, e2; |
8fb6d89b |
563 | int i, j; |
9acadc2b |
564 | |
565 | while (1) { |
566 | XNextEvent (disp, &ev); |
567 | if (reading) { |
568 | switch (ev.type) { |
569 | case SelectionNotify: |
6aa7b28f |
570 | if (verbose) |
571 | fprintf(stderr, "got SelectionNotify: requestor=%08lx " |
572 | "selection=%s target=%s property=%s\n", |
573 | ev.xselection.requestor, |
574 | translate_atom(disp, ev.xselection.selection), |
575 | translate_atom(disp, ev.xselection.target), |
576 | translate_atom(disp, ev.xselection.property)); |
577 | |
9acadc2b |
578 | if (ev.xselection.property != None) |
579 | do_paste(ev.xselection.requestor, |
633c13c1 |
580 | ev.xselection.property, False); |
9acadc2b |
581 | return; |
582 | } |
583 | } else { |
584 | switch (ev.type) { |
585 | case SelectionClear: |
586 | /* Selection has been cleared by another app. */ |
587 | return; |
588 | case SelectionRequest: |
589 | e2.xselection.type = SelectionNotify; |
590 | e2.xselection.requestor = ev.xselectionrequest.requestor; |
591 | e2.xselection.selection = ev.xselectionrequest.selection; |
592 | e2.xselection.target = ev.xselectionrequest.target; |
593 | e2.xselection.time = ev.xselectionrequest.time; |
e1c1021f |
594 | e2.xselection.property = |
595 | convert_sel_outer(ev.xselectionrequest.requestor, |
596 | ev.xselectionrequest.target, |
597 | ev.xselectionrequest.property); |
598 | XSendEvent (disp, ev.xselectionrequest.requestor, |
599 | False, 0, &e2); |
8fb6d89b |
600 | break; |
601 | case PropertyNotify: |
602 | for (i = j = 0; i < nincrs; i++) { |
603 | int keep = True; |
604 | if (incrs[i].window == ev.xproperty.window && |
605 | incrs[i].property == ev.xproperty.atom && |
606 | ev.xproperty.state == PropertyDelete) { |
607 | size_t thissize = incrs[i].size; |
608 | if (thissize > SELDELTA) |
609 | thissize = SELDELTA; |
610 | |
611 | XChangeProperty(disp, |
612 | incrs[i].window, incrs[i].property, |
613 | incrs[i].type, incrs[i].format, |
614 | PropModeReplace, incrs[i].data, |
615 | thissize / (incrs[i].format/8)); |
616 | |
617 | if (thissize == 0) { |
618 | /* |
619 | * If we've just sent a zero-length block, |
620 | * the incremental transfer is over and we |
621 | * should delete this entry. |
622 | */ |
623 | keep = False; |
624 | } |
625 | |
626 | incrs[i].data += thissize; |
627 | incrs[i].size -= thissize; |
628 | } |
629 | if (keep) { |
630 | if (j != i) |
631 | incrs[j] = incrs[i]; |
632 | j++; |
633 | } |
634 | } |
635 | nincrs = j; |
636 | break; |
9acadc2b |
637 | } |
638 | } |
639 | } |
640 | } |
641 | |
642 | void done_X(void) { |
643 | int i; |
644 | |
645 | if (ourwin != None) |
646 | XDestroyWindow (disp, ourwin); |
647 | if (disp) |
648 | XCloseDisplay (disp); |
649 | } |
650 | |
633c13c1 |
651 | void do_paste(Window window, Atom property, int cutbuffer) { |
9acadc2b |
652 | Atom actual_type; |
653 | int actual_format, i; |
654 | long nitems, bytes_after, nread; |
655 | unsigned char *data; |
633c13c1 |
656 | int incremental = False; |
657 | XEvent ev; |
9acadc2b |
658 | |
659 | nread = 0; |
660 | while (XGetWindowProperty(disp, window, property, nread / 4, SELDELTA, |
633c13c1 |
661 | !cutbuffer, AnyPropertyType, &actual_type, |
9acadc2b |
662 | &actual_format, &nitems, &bytes_after, |
663 | (unsigned char **) &data) == Success) { |
6aa7b28f |
664 | if (verbose) |
665 | fprintf(stderr, "got %ld items of %d-byte data, type=%s;" |
666 | " %ld to go\n", nitems, actual_format, |
667 | translate_atom(disp, actual_type), bytes_after); |
668 | |
633c13c1 |
669 | /* |
670 | * ICCCM 2.7.2: if we receive data with the type atom set to |
671 | * INCR, it indicates that the actual data will arrive in |
672 | * multiple chunks, terminating with a zero-length one. |
673 | * Between each pair, we must wait for a PropertyNotify event |
674 | * which tells us that the next chunk has arrived. |
675 | */ |
676 | if (actual_type == incr_atom && !cutbuffer) { |
677 | incremental = True; |
678 | /* |
679 | * Immediately wait for the first chunk of real data. |
680 | */ |
681 | do { |
682 | XMaskEvent(disp, PropertyChangeMask, &ev); |
683 | } while (ev.xproperty.state != PropertyNewValue); |
684 | /* |
685 | * And loop straight back round to read it. |
686 | */ |
687 | continue; |
688 | } |
689 | |
3ffcf184 |
690 | if (nitems > 0) { |
5340832d |
691 | /* |
692 | * We expect all returned chunks of data to be |
693 | * multiples of 4 bytes (because we can only request |
694 | * the subsequent starting offset in 4-byte |
695 | * increments). Of course you can store an odd number |
696 | * of bytes in a selection, so this can't be the case |
697 | * every time XGetWindowProperty returns; but it |
698 | * should be the case every time it returns _and there |
699 | * is more data to come_. |
700 | * |
701 | * Hence, whenever XGetWindowProperty returns, we |
702 | * verify that the size of the data returned _last_ |
703 | * time was divisible by 4. |
704 | */ |
705 | if ((nread & 3) != 0) { |
706 | error("unexpected data size: %d read (not a multiple" |
b3d07da3 |
707 | " of 4), but more to come", nread); |
5340832d |
708 | } |
709 | |
3ffcf184 |
710 | if (expected_type != (Atom)None && actual_type != expected_type) { |
6aa7b28f |
711 | const char *expout = translate_atom(disp, expected_type); |
712 | const char *gotout = translate_atom(disp, actual_type); |
b3d07da3 |
713 | error("unexpected data type: expected %s, got %s", |
3ffcf184 |
714 | expout, gotout); |
715 | } |
716 | if (expected_format && expected_format != actual_format) { |
b3d07da3 |
717 | error("unexpected data format: expected %d-bit, got %d-bit", |
3ffcf184 |
718 | expected_format, actual_format); |
719 | } |
720 | } |
721 | |
722 | if (nitems > 0) { |
723 | if (mode == TARGETS) { |
724 | assert(actual_format == 32); |
725 | int i; |
726 | for (i = 0; i < nitems; i++) { |
727 | Atom x = ((Atom *)data)[i]; |
6aa7b28f |
728 | printf("%s\n", translate_atom(disp, x)); |
3ffcf184 |
729 | } |
730 | } else if (mode == TIMESTAMP) { |
731 | assert(actual_format == 32); |
732 | Time x = ((Time *)data)[0]; |
733 | printf("%lu\n", (unsigned long)x); |
734 | } else { |
735 | fwrite(data, actual_format / 8, nitems, stdout); |
736 | nread += nitems * actual_format / 8; |
737 | } |
9acadc2b |
738 | } |
739 | XFree(data); |
05ecc810 |
740 | if (bytes_after == 0) { |
633c13c1 |
741 | /* |
742 | * We've come to the end of the property we're reading. |
743 | */ |
744 | if (incremental) { |
745 | /* |
746 | * For an incremental transfer, this means we wait for |
747 | * another property to be dumped in the same place on |
748 | * our window, and loop round again reading that. The |
749 | * exception is if the total length of the property we |
750 | * got was zero, which signals the end. |
751 | */ |
752 | if (nread == 0 && nitems == 0) |
753 | break; /* all done */ |
754 | |
755 | /* otherwise wait for the next chunk */ |
756 | do { |
757 | XMaskEvent(disp, PropertyChangeMask, &ev); |
758 | } while (ev.xproperty.state != PropertyNewValue); |
759 | |
760 | /* which we read from the beginning */ |
761 | nread = 0; |
762 | } else { |
05ecc810 |
763 | break; |
633c13c1 |
764 | } |
05ecc810 |
765 | } |
9acadc2b |
766 | } |
767 | } |