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