9acadc2b |
1 | /* |
2 | * xcopy: quickly pipe text data into, or out of, the primary X |
3 | * selection |
4 | */ |
5 | |
6 | #include <malloc.h> |
7 | #include <stdio.h> |
8 | #include <stdlib.h> |
9 | #include <string.h> |
10 | #include <stdarg.h> |
11 | #include <math.h> |
12 | #include <errno.h> |
13 | #include <assert.h> |
14 | |
15 | #include <X11/X.h> |
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; |
32 | enum { STRING, CTEXT, UTF8 } mode = STRING; |
33 | |
34 | /* selection data */ |
35 | char *seltext; |
36 | int sellen, selsize; |
37 | #define SELDELTA 16384 |
38 | |
39 | /* functional parameters */ |
40 | int reading; /* read instead of writing? */ |
41 | int convert_to_ctext = True; /* Xmb convert to compound text? */ |
42 | |
da0f8522 |
43 | const char usagemsg[] = |
44 | "usage: xcopy [ -r ] [ -u | -c ] [ -C ]\n" |
45 | " also: xcopy --version report version number\n" |
46 | " xcopy --help display this help text\n" |
47 | " xcopy --licence display the (MIT) licence text\n" |
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 | ; |
54 | |
55 | void usage(void) { |
56 | fputs(usagemsg, stdout); |
57 | } |
58 | |
59 | const char licencemsg[] = |
60 | "xcopy is copyright 2001-2004 Simon Tatham.\n" |
61 | "\n" |
62 | "Permission is hereby granted, free of charge, to any person\n" |
63 | "obtaining a copy of this software and associated documentation files\n" |
64 | "(the \"Software\"), to deal in the Software without restriction,\n" |
65 | "including without limitation the rights to use, copy, modify, merge,\n" |
66 | "publish, distribute, sublicense, and/or sell copies of the Software,\n" |
67 | "and to permit persons to whom the Software is furnished to do so,\n" |
68 | "subject to the following conditions:\n" |
69 | "\n" |
70 | "The above copyright notice and this permission notice shall be\n" |
71 | "included in all copies or substantial portions of the Software.\n" |
72 | "\n" |
73 | "THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND,\n" |
74 | "EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF\n" |
75 | "MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND\n" |
76 | "NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS\n" |
77 | "BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN\n" |
78 | "ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN\n" |
79 | "CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE\n" |
80 | "SOFTWARE.\n" |
81 | ; |
82 | |
83 | void licence(void) { |
84 | fputs(licencemsg, stdout); |
85 | } |
86 | |
87 | void version(void) { |
88 | #define SVN_REV "$Revision$" |
89 | char rev[sizeof(SVN_REV)]; |
90 | char *p, *q; |
91 | |
92 | strcpy(rev, SVN_REV); |
93 | |
94 | for (p = rev; *p && *p != ':'; p++); |
95 | if (*p) { |
96 | p++; |
97 | while (*p && isspace(*p)) p++; |
98 | for (q = p; *q && *q != '$'; q++); |
99 | if (*q) *q = '\0'; |
100 | printf("xcopy revision %s\n", p); |
101 | } else { |
102 | printf("xcopy: unknown version\n"); |
103 | } |
104 | } |
105 | |
9acadc2b |
106 | int main(int ac, char **av) { |
107 | int n; |
108 | int eventloop; |
109 | |
110 | pname = *av; |
111 | |
112 | /* parse the command line arguments */ |
113 | while (--ac) { |
114 | char *p = *++av; |
115 | |
116 | if (!strcmp(p, "-display") || !strcmp(p, "-disp")) { |
117 | if (!av[1]) |
118 | error ("option `%s' expects a parameter", p); |
119 | display = *++av, --ac; |
120 | } else if (!strcmp(p, "-r")) { |
121 | reading = True; |
122 | } else if (!strcmp(p, "-u")) { |
123 | mode = UTF8; |
124 | } else if (!strcmp(p, "-c")) { |
125 | mode = CTEXT; |
126 | } else if (!strcmp(p, "-C")) { |
127 | convert_to_ctext = False; |
da0f8522 |
128 | } else if (!strcmp(p, "--help")) { |
129 | usage(); |
130 | return 0; |
131 | } else if (!strcmp(p, "--version")) { |
132 | version(); |
133 | return 0; |
134 | } else if (!strcmp(p, "--licence") || !strcmp(p, "--license")) { |
135 | licence(); |
136 | return 0; |
9acadc2b |
137 | } else if (*p=='-') { |
138 | error ("unrecognised option `%s'", p); |
139 | } else { |
140 | error ("no parameters required"); |
141 | } |
142 | } |
143 | |
144 | if (!reading) { |
145 | seltext = malloc(SELDELTA); |
146 | if (!seltext) |
147 | error ("out of memory"); |
148 | selsize = SELDELTA; |
149 | sellen = 0; |
150 | do { |
151 | n = fread(seltext+sellen, 1, selsize-sellen, stdin); |
152 | sellen += n; |
153 | if (sellen >= selsize) { |
154 | seltext = realloc(seltext, selsize += SELDELTA); |
155 | if (!seltext) |
156 | error ("out of memory"); |
157 | } |
158 | } while (n > 0); |
159 | if (sellen == selsize) { |
160 | seltext = realloc(seltext, selsize += SELDELTA); |
161 | if (!seltext) |
162 | error ("out of memory"); |
163 | } |
164 | seltext[sellen] = '\0'; |
165 | } |
166 | |
167 | eventloop = init_X(); |
168 | if (!reading) { |
169 | /* |
170 | * If we are writing the selection, we must go into the |
171 | * background now. |
172 | */ |
173 | int pid = fork(); |
174 | if (pid < 0) { |
175 | error("unable to fork: %s", strerror(errno)); |
176 | } else if (pid > 0) { |
177 | /* |
178 | * we are the parent; just exit |
179 | */ |
180 | return 0; |
181 | } |
182 | /* |
183 | * we are the child |
184 | */ |
185 | close(0); |
186 | close(1); |
187 | close(2); |
188 | chdir("/"); |
189 | } |
190 | if (eventloop) |
191 | run_X(); |
192 | done_X(); |
193 | return 0; |
194 | } |
195 | |
196 | /* handle errors */ |
197 | |
198 | void error (char *fmt, ...) { |
199 | va_list ap; |
200 | char errbuf[200]; |
201 | |
202 | done_X(); |
203 | va_start (ap, fmt); |
204 | vsprintf (errbuf, fmt, ap); |
205 | va_end (ap); |
206 | fprintf (stderr, "%s: %s\n", pname, errbuf); |
207 | exit (1); |
208 | } |
209 | |
210 | /* begin the X interface */ |
211 | |
212 | char *lcasename = "xcopy"; |
213 | char *ucasename = "XCopy"; |
214 | |
215 | Display *disp = NULL; |
216 | Window ourwin = None; |
217 | Atom compound_text_atom, targets_atom; |
218 | int screen, wwidth, wheight; |
219 | |
220 | Atom strtype = XA_STRING; |
221 | |
222 | /* |
223 | * Returns TRUE if we need to enter an event loop, FALSE otherwise. |
224 | */ |
225 | int init_X(void) { |
226 | Window root; |
227 | int x = 0, y = 0, width = 512, height = 128; |
228 | int i, got = 0; |
229 | XWMHints wm_hints; |
230 | XSizeHints size_hints; |
231 | XClassHint class_hints; |
232 | XTextProperty textprop; |
233 | XGCValues gcv; |
234 | |
235 | /* open the X display */ |
236 | disp = XOpenDisplay (display); |
237 | if (!disp) |
238 | error ("unable to open display"); |
239 | |
240 | if (mode == UTF8) { |
241 | strtype = XInternAtom(disp, "UTF8_STRING", False); |
242 | if (!strtype) |
243 | error ("unable to get UTF8_STRING property"); |
244 | } else if (mode == CTEXT) { |
245 | strtype = XInternAtom(disp, "COMPOUND_TEXT", False); |
246 | if (!strtype) |
247 | error ("unable to get COMPOUND_TEXT property"); |
248 | } |
249 | targets_atom = XInternAtom(disp, "TARGETS", False); |
250 | if (!targets_atom) |
251 | error ("unable to get TARGETS property"); |
252 | |
253 | /* get the screen and root-window */ |
254 | screen = DefaultScreen (disp); |
255 | root = RootWindow (disp, screen); |
256 | |
257 | x = y = 0; |
258 | width = height = 10; /* doesn't really matter */ |
259 | |
260 | /* actually create the window */ |
261 | ourwin = XCreateSimpleWindow (disp, root, x, y, width, height,0, |
262 | BlackPixel(disp, screen), |
263 | WhitePixel(disp, screen)); |
264 | |
265 | /* resource class name */ |
266 | class_hints.res_name = lcasename; |
267 | class_hints.res_class = ucasename; |
268 | XSetClassHint (disp, ourwin, &class_hints); |
269 | |
270 | /* do selection fiddling */ |
271 | if (reading) { |
272 | /* |
273 | * We are reading the selection, so we must FIXME. |
274 | */ |
275 | if (XGetSelectionOwner(disp, XA_PRIMARY) == None) { |
276 | /* No primary selection, so use the cut buffer. */ |
277 | do_paste(DefaultRootWindow(disp), XA_CUT_BUFFER0, False); |
278 | return False; |
279 | } else { |
280 | Atom sel_property = XInternAtom(disp, "VT_SELECTION", False); |
281 | XConvertSelection(disp, XA_PRIMARY, strtype, |
282 | sel_property, ourwin, CurrentTime); |
283 | return True; |
284 | } |
285 | } else { |
286 | /* |
287 | * We are writing to the selection, so we establish |
288 | * ourselves as selection owner. Also place the data in |
289 | * CUT_BUFFER0, if it isn't of an exotic type (cut buffers |
290 | * can only take ordinary string data, it turns out). |
291 | */ |
292 | XSetSelectionOwner (disp, XA_PRIMARY, ourwin, CurrentTime); |
293 | if (XGetSelectionOwner (disp, XA_PRIMARY) != ourwin) |
294 | error ("unable to obtain primary X selection\n"); |
295 | compound_text_atom = XInternAtom(disp, "COMPOUND_TEXT", False); |
296 | if (strtype == XA_STRING) { |
297 | /* |
298 | * ICCCM-required cut buffer initialisation. |
299 | */ |
300 | XChangeProperty(disp, root, XA_CUT_BUFFER0, |
301 | XA_STRING, 8, PropModeAppend, "", 0); |
302 | XChangeProperty(disp, root, XA_CUT_BUFFER1, |
303 | XA_STRING, 8, PropModeAppend, "", 0); |
304 | XChangeProperty(disp, root, XA_CUT_BUFFER2, |
305 | XA_STRING, 8, PropModeAppend, "", 0); |
306 | XChangeProperty(disp, root, XA_CUT_BUFFER3, |
307 | XA_STRING, 8, PropModeAppend, "", 0); |
308 | XChangeProperty(disp, root, XA_CUT_BUFFER4, |
309 | XA_STRING, 8, PropModeAppend, "", 0); |
310 | XChangeProperty(disp, root, XA_CUT_BUFFER5, |
311 | XA_STRING, 8, PropModeAppend, "", 0); |
312 | XChangeProperty(disp, root, XA_CUT_BUFFER6, |
313 | XA_STRING, 8, PropModeAppend, "", 0); |
314 | XChangeProperty(disp, root, XA_CUT_BUFFER7, |
315 | XA_STRING, 8, PropModeAppend, "", 0); |
316 | /* |
317 | * Rotate the cut buffers and add our text in CUT_BUFFER0. |
318 | */ |
319 | XRotateBuffers(disp, 1); |
320 | XStoreBytes(disp, seltext, sellen); |
321 | } |
322 | return True; |
323 | } |
324 | } |
325 | |
326 | void run_X(void) { |
327 | XEvent ev, e2; |
328 | |
329 | while (1) { |
330 | XNextEvent (disp, &ev); |
331 | if (reading) { |
332 | switch (ev.type) { |
333 | case SelectionNotify: |
334 | if (ev.xselection.property != None) |
335 | do_paste(ev.xselection.requestor, |
336 | ev.xselection.property, True); |
337 | return; |
338 | } |
339 | } else { |
340 | switch (ev.type) { |
341 | case SelectionClear: |
342 | /* Selection has been cleared by another app. */ |
343 | return; |
344 | case SelectionRequest: |
345 | e2.xselection.type = SelectionNotify; |
346 | e2.xselection.requestor = ev.xselectionrequest.requestor; |
347 | e2.xselection.selection = ev.xselectionrequest.selection; |
348 | e2.xselection.target = ev.xselectionrequest.target; |
349 | e2.xselection.time = ev.xselectionrequest.time; |
350 | if (ev.xselectionrequest.target == strtype) { |
351 | XChangeProperty (disp, ev.xselectionrequest.requestor, |
352 | ev.xselectionrequest.property, strtype, |
353 | 8, PropModeReplace, seltext, sellen); |
354 | e2.xselection.property = ev.xselectionrequest.property; |
355 | } else if (ev.xselectionrequest.target == compound_text_atom && |
356 | convert_to_ctext) { |
357 | XTextProperty tp; |
358 | XmbTextListToTextProperty (disp, &seltext, 1, |
359 | XCompoundTextStyle, &tp); |
360 | XChangeProperty (disp, ev.xselectionrequest.requestor, |
361 | ev.xselectionrequest.property, |
362 | ev.xselectionrequest.target, |
363 | tp.format, PropModeReplace, |
364 | tp.value, tp.nitems); |
365 | e2.xselection.property = ev.xselectionrequest.property; |
366 | } else if (ev.xselectionrequest.target == targets_atom) { |
367 | Atom targets[2]; |
368 | int len = 0; |
369 | targets[len++] = strtype; |
370 | if (strtype != compound_text_atom && convert_to_ctext) |
371 | targets[len++] = compound_text_atom; |
372 | XChangeProperty (disp, ev.xselectionrequest.requestor, |
373 | ev.xselectionrequest.property, |
374 | ev.xselectionrequest.target, |
375 | 32, PropModeReplace, |
376 | (unsigned char *)targets, len); |
377 | } else { |
378 | e2.xselection.property = None; |
379 | } |
380 | XSendEvent (disp, ev.xselectionrequest.requestor, False, 0, &e2); |
381 | } |
382 | } |
383 | } |
384 | } |
385 | |
386 | void done_X(void) { |
387 | int i; |
388 | |
389 | if (ourwin != None) |
390 | XDestroyWindow (disp, ourwin); |
391 | if (disp) |
392 | XCloseDisplay (disp); |
393 | } |
394 | |
395 | void do_paste(Window window, Atom property, int Delete) { |
396 | Atom actual_type; |
397 | int actual_format, i; |
398 | long nitems, bytes_after, nread; |
399 | unsigned char *data; |
400 | |
401 | nread = 0; |
402 | while (XGetWindowProperty(disp, window, property, nread / 4, SELDELTA, |
403 | Delete, AnyPropertyType, &actual_type, |
404 | &actual_format, &nitems, &bytes_after, |
405 | (unsigned char **) &data) == Success) { |
406 | /* |
407 | * We expect all returned chunks of data to be multiples of |
408 | * 4 bytes (because we can only request the subsequent |
409 | * starting offset in 4-byte increments). Of course you can |
410 | * store an odd number of bytes in a selection, so this |
411 | * can't be the case every time XGetWindowProperty returns; |
412 | * but it should be the case every time it returns _and |
413 | * there is more data to come_. |
414 | * |
415 | * Hence, whenever XGetWindowProperty returns, we verify |
416 | * that the size of the data returned _last_ time was |
417 | * divisible by 4. |
418 | */ |
419 | if (nitems > 0) |
420 | assert((nread & 3) == 0); |
421 | |
422 | if (actual_type == strtype && nitems > 0) { |
423 | assert(actual_format == 8); |
424 | fwrite(data, 1, nitems, stdout); |
425 | nread += nitems; |
426 | } |
427 | XFree(data); |
428 | if (actual_type != strtype || nitems == 0) |
429 | break; |
430 | } |
431 | } |