Mercurial > vim
annotate src/if_xcmdsrv.c @ 15175:58e8f4306a6d
Added tag v8.1.0597 for changeset 963c1967f91753b21115199c60dc2668a96ea5a8
author | Bram Moolenaar <Bram@vim.org> |
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date | Sat, 15 Dec 2018 16:30:06 +0100 |
parents | 27b9a84395b5 |
children | 55ccc2d353bd |
rev | line source |
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1 /* vi:set ts=8 sts=4 sw=4 noet: |
7 | 2 * |
3 * VIM - Vi IMproved by Bram Moolenaar | |
4 * X command server by Flemming Madsen | |
5 * | |
6 * Do ":help uganda" in Vim to read copying and usage conditions. | |
7 * Do ":help credits" in Vim to see a list of people who contributed. | |
8 * See README.txt for an overview of the Vim source code. | |
9 * | |
10 * if_xcmdsrv.c: Functions for passing commands through an X11 display. | |
11 * | |
12 */ | |
13 | |
14 #include "vim.h" | |
15 #include "version.h" | |
16 | |
17 #if defined(FEAT_CLIENTSERVER) || defined(PROTO) | |
18 | |
19 # ifdef FEAT_X11 | |
20 # include <X11/Intrinsic.h> | |
21 # include <X11/Xatom.h> | |
22 # endif | |
23 | |
24 /* | |
1121 | 25 * This file provides procedures that implement the command server |
26 * functionality of Vim when in contact with an X11 server. | |
7 | 27 * |
28 * Adapted from TCL/TK's send command in tkSend.c of the tk 3.6 distribution. | |
29 * Adapted for use in Vim by Flemming Madsen. Protocol changed to that of tk 4 | |
30 */ | |
31 | |
32 /* | |
33 * Copyright (c) 1989-1993 The Regents of the University of California. | |
34 * All rights reserved. | |
35 * | |
36 * Permission is hereby granted, without written agreement and without | |
37 * license or royalty fees, to use, copy, modify, and distribute this | |
38 * software and its documentation for any purpose, provided that the | |
39 * above copyright notice and the following two paragraphs appear in | |
40 * all copies of this software. | |
41 * | |
42 * IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR | |
43 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT | |
44 * OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF | |
45 * CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
46 * | |
47 * THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES, | |
48 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY | |
49 * AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS | |
50 * ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO | |
51 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. | |
52 */ | |
53 | |
54 | |
55 /* | |
56 * When a result is being awaited from a sent command, one of | |
57 * the following structures is present on a list of all outstanding | |
58 * sent commands. The information in the structure is used to | |
59 * process the result when it arrives. You're probably wondering | |
60 * how there could ever be multiple outstanding sent commands. | |
61 * This could happen if Vim instances invoke each other recursively. | |
62 * It's unlikely, but possible. | |
63 */ | |
64 | |
65 typedef struct PendingCommand | |
66 { | |
67 int serial; /* Serial number expected in result. */ | |
68 int code; /* Result Code. 0 is OK */ | |
69 char_u *result; /* String result for command (malloc'ed). | |
70 * NULL means command still pending. */ | |
71 struct PendingCommand *nextPtr; | |
72 /* Next in list of all outstanding commands. | |
73 * NULL means end of list. */ | |
74 } PendingCommand; | |
75 | |
76 static PendingCommand *pendingCommands = NULL; | |
77 /* List of all commands currently | |
78 * being waited for. */ | |
79 | |
80 /* | |
81 * The information below is used for communication between processes | |
82 * during "send" commands. Each process keeps a private window, never | |
83 * even mapped, with one property, "Comm". When a command is sent to | |
84 * an interpreter, the command is appended to the comm property of the | |
85 * communication window associated with the interp's process. Similarly, | |
86 * when a result is returned from a sent command, it is also appended | |
87 * to the comm property. | |
88 * | |
89 * Each command and each result takes the form of ASCII text. For a | |
90 * command, the text consists of a nul character followed by several | |
39 | 91 * nul-terminated ASCII strings. The first string consists of a |
92 * single letter: | |
93 * "c" for an expression | |
94 * "k" for keystrokes | |
95 * "r" for reply | |
96 * "n" for notification. | |
97 * Subsequent strings have the form "option value" where the following options | |
98 * are supported: | |
7 | 99 * |
100 * -r commWindow serial | |
101 * | |
102 * This option means that a response should be sent to the window | |
103 * whose X identifier is "commWindow" (in hex), and the response should | |
104 * be identified with the serial number given by "serial" (in decimal). | |
105 * If this option isn't specified then the send is asynchronous and | |
106 * no response is sent. | |
107 * | |
108 * -n name | |
109 * "Name" gives the name of the application for which the command is | |
110 * intended. This option must be present. | |
111 * | |
39 | 112 * -E encoding |
113 * Encoding name used for the text. This is the 'encoding' of the | |
114 * sender. The receiver may want to do conversion to his 'encoding'. | |
115 * | |
7 | 116 * -s script |
117 * "Script" is the script to be executed. This option must be | |
118 * present. Taken as a series of keystrokes in a "k" command where | |
119 * <Key>'s are expanded | |
120 * | |
121 * The options may appear in any order. The -n and -s options must be | |
122 * present, but -r may be omitted for asynchronous RPCs. For compatibility | |
123 * with future releases that may add new features, there may be additional | |
124 * options present; as long as they start with a "-" character, they will | |
125 * be ignored. | |
126 * | |
127 * A result also consists of a zero character followed by several null- | |
128 * terminated ASCII strings. The first string consists of the single | |
129 * letter "r". Subsequent strings have the form "option value" where | |
130 * the following options are supported: | |
131 * | |
132 * -s serial | |
133 * Identifies the command for which this is the result. It is the | |
134 * same as the "serial" field from the -s option in the command. This | |
135 * option must be present. | |
136 * | |
137 * -r result | |
138 * "Result" is the result string for the script, which may be either | |
139 * a result or an error message. If this field is omitted then it | |
140 * defaults to an empty string. | |
141 * | |
142 * -c code | |
143 * 0: for OK. This is the default. | |
144 * 1: for error: Result is the last error | |
145 * | |
146 * -i errorInfo | |
147 * -e errorCode | |
148 * Not applicable for Vim | |
149 * | |
150 * Options may appear in any order, and only the -s option must be | |
151 * present. As with commands, there may be additional options besides | |
152 * these; unknown options are ignored. | |
153 */ | |
154 | |
155 /* | |
156 * Maximum size property that can be read at one time by | |
157 * this module: | |
158 */ | |
159 | |
160 #define MAX_PROP_WORDS 100000 | |
161 | |
162 struct ServerReply | |
163 { | |
164 Window id; | |
165 garray_T strings; | |
166 }; | |
167 static garray_T serverReply = { 0, 0, 0, 0, 0 }; | |
168 enum ServerReplyOp { SROP_Find, SROP_Add, SROP_Delete }; | |
169 | |
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170 typedef int (*EndCond)(void *); |
7 | 171 |
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172 struct x_cmdqueue |
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173 { |
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174 char_u *propInfo; |
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175 long_u len; |
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176 struct x_cmdqueue *next; |
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177 struct x_cmdqueue *prev; |
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178 }; |
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179 |
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180 typedef struct x_cmdqueue x_queue_T; |
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181 |
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182 /* dummy node, header for circular queue */ |
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183 static x_queue_T head = {NULL, 0, NULL, NULL}; |
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184 |
7 | 185 /* |
186 * Forward declarations for procedures defined later in this file: | |
187 */ | |
188 | |
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189 static Window LookupName(Display *dpy, char_u *name, int delete, char_u **loose); |
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190 static int SendInit(Display *dpy); |
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191 static int DoRegisterName(Display *dpy, char_u *name); |
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192 static void DeleteAnyLingerer(Display *dpy, Window w); |
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193 static int GetRegProp(Display *dpy, char_u **regPropp, long_u *numItemsp, int domsg); |
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194 static int WaitForPend(void *p); |
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195 static int WindowValid(Display *dpy, Window w); |
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196 static void ServerWait(Display *dpy, Window w, EndCond endCond, void *endData, int localLoop, int seconds); |
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197 static int AppendPropCarefully(Display *display, Window window, Atom property, char_u *value, int length); |
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198 static int x_error_check(Display *dpy, XErrorEvent *error_event); |
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199 static int IsSerialName(char_u *name); |
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200 static void save_in_queue(char_u *buf, long_u len); |
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201 static void server_parse_message(Display *dpy, char_u *propInfo, long_u numItems); |
7 | 202 |
203 /* Private variables for the "server" functionality */ | |
204 static Atom registryProperty = None; | |
205 static Atom vimProperty = None; | |
206 static int got_x_error = FALSE; | |
207 | |
208 static char_u *empty_prop = (char_u *)""; /* empty GetRegProp() result */ | |
209 | |
210 /* | |
211 * Associate an ASCII name with Vim. Try real hard to get a unique one. | |
212 * Returns FAIL or OK. | |
213 */ | |
214 int | |
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215 serverRegisterName( |
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216 Display *dpy, /* display to register with */ |
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217 char_u *name) /* the name that will be used as a base */ |
7 | 218 { |
219 int i; | |
220 int res; | |
221 char_u *p = NULL; | |
222 | |
223 res = DoRegisterName(dpy, name); | |
224 if (res < 0) | |
225 { | |
226 i = 1; | |
227 do | |
228 { | |
229 if (res < -1 || i >= 1000) | |
230 { | |
231 MSG_ATTR(_("Unable to register a command server name"), | |
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232 HL_ATTR(HLF_W)); |
7 | 233 return FAIL; |
234 } | |
235 if (p == NULL) | |
236 p = alloc(STRLEN(name) + 10); | |
237 if (p == NULL) | |
238 { | |
239 res = -10; | |
240 continue; | |
241 } | |
242 sprintf((char *)p, "%s%d", name, i++); | |
243 res = DoRegisterName(dpy, p); | |
244 } | |
245 while (res < 0) | |
246 ; | |
247 vim_free(p); | |
248 } | |
249 return OK; | |
250 } | |
251 | |
252 static int | |
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253 DoRegisterName(Display *dpy, char_u *name) |
7 | 254 { |
255 Window w; | |
256 XErrorHandler old_handler; | |
257 #define MAX_NAME_LENGTH 100 | |
258 char_u propInfo[MAX_NAME_LENGTH + 20]; | |
259 | |
260 if (commProperty == None) | |
261 { | |
262 if (SendInit(dpy) < 0) | |
263 return -2; | |
264 } | |
265 | |
266 /* | |
267 * Make sure the name is unique, and append info about it to | |
268 * the registry property. It's important to lock the server | |
269 * here to prevent conflicting changes to the registry property. | |
270 * WARNING: Do not step through this while debugging, it will hangup the X | |
271 * server! | |
272 */ | |
273 XGrabServer(dpy); | |
274 w = LookupName(dpy, name, FALSE, NULL); | |
275 if (w != (Window)0) | |
276 { | |
277 Status status; | |
278 int dummyInt; | |
279 unsigned int dummyUns; | |
280 Window dummyWin; | |
281 | |
282 /* | |
283 * The name is currently registered. See if the commWindow | |
284 * associated with the name exists. If not, or if the commWindow | |
285 * is *our* commWindow, then just unregister the old name (this | |
286 * could happen if an application dies without cleaning up the | |
287 * registry). | |
288 */ | |
289 old_handler = XSetErrorHandler(x_error_check); | |
290 status = XGetGeometry(dpy, w, &dummyWin, &dummyInt, &dummyInt, | |
291 &dummyUns, &dummyUns, &dummyUns, &dummyUns); | |
292 (void)XSetErrorHandler(old_handler); | |
293 if (status != Success && w != commWindow) | |
294 { | |
295 XUngrabServer(dpy); | |
296 XFlush(dpy); | |
297 return -1; | |
298 } | |
299 (void)LookupName(dpy, name, /*delete=*/TRUE, NULL); | |
300 } | |
301 sprintf((char *)propInfo, "%x %.*s", (int_u)commWindow, | |
302 MAX_NAME_LENGTH, name); | |
303 old_handler = XSetErrorHandler(x_error_check); | |
304 got_x_error = FALSE; | |
305 XChangeProperty(dpy, RootWindow(dpy, 0), registryProperty, XA_STRING, 8, | |
306 PropModeAppend, propInfo, STRLEN(propInfo) + 1); | |
307 XUngrabServer(dpy); | |
308 XSync(dpy, False); | |
309 (void)XSetErrorHandler(old_handler); | |
310 | |
311 if (!got_x_error) | |
312 { | |
313 #ifdef FEAT_EVAL | |
314 set_vim_var_string(VV_SEND_SERVER, name, -1); | |
315 #endif | |
316 serverName = vim_strsave(name); | |
317 #ifdef FEAT_TITLE | |
318 need_maketitle = TRUE; | |
319 #endif | |
320 return 0; | |
321 } | |
322 return -2; | |
323 } | |
324 | |
325 #if defined(FEAT_GUI) || defined(PROTO) | |
326 /* | |
327 * Clean out new ID from registry and set it as comm win. | |
328 * Change any registered window ID. | |
329 */ | |
330 void | |
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331 serverChangeRegisteredWindow( |
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332 Display *dpy, /* Display to register with */ |
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333 Window newwin) /* Re-register to this ID */ |
7 | 334 { |
335 char_u propInfo[MAX_NAME_LENGTH + 20]; | |
336 | |
337 commWindow = newwin; | |
338 | |
339 /* Always call SendInit() here, to make sure commWindow is marked as a Vim | |
340 * window. */ | |
341 if (SendInit(dpy) < 0) | |
342 return; | |
343 | |
344 /* WARNING: Do not step through this while debugging, it will hangup the X | |
345 * server! */ | |
346 XGrabServer(dpy); | |
347 DeleteAnyLingerer(dpy, newwin); | |
348 if (serverName != NULL) | |
349 { | |
350 /* Reinsert name if we was already registered */ | |
351 (void)LookupName(dpy, serverName, /*delete=*/TRUE, NULL); | |
352 sprintf((char *)propInfo, "%x %.*s", | |
353 (int_u)newwin, MAX_NAME_LENGTH, serverName); | |
354 XChangeProperty(dpy, RootWindow(dpy, 0), registryProperty, XA_STRING, 8, | |
355 PropModeAppend, (char_u *)propInfo, | |
356 STRLEN(propInfo) + 1); | |
357 } | |
358 XUngrabServer(dpy); | |
359 } | |
360 #endif | |
361 | |
362 /* | |
363 * Send to an instance of Vim via the X display. | |
364 * Returns 0 for OK, negative for an error. | |
365 */ | |
366 int | |
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367 serverSendToVim( |
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368 Display *dpy, /* Where to send. */ |
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369 char_u *name, /* Where to send. */ |
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370 char_u *cmd, /* What to send. */ |
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371 char_u **result, /* Result of eval'ed expression */ |
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372 Window *server, /* Actual ID of receiving app */ |
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373 Bool asExpr, /* Interpret as keystrokes or expr ? */ |
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374 int timeout, /* seconds to wait or zero */ |
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375 Bool localLoop, /* Throw away everything but result */ |
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376 int silent) /* don't complain about no server */ |
7 | 377 { |
378 Window w; | |
379 char_u *property; | |
380 int length; | |
381 int res; | |
382 static int serial = 0; /* Running count of sent commands. | |
383 * Used to give each command a | |
384 * different serial number. */ | |
385 PendingCommand pending; | |
386 char_u *loosename = NULL; | |
387 | |
388 if (result != NULL) | |
389 *result = NULL; | |
390 if (name == NULL || *name == NUL) | |
391 name = (char_u *)"GVIM"; /* use a default name */ | |
392 | |
393 if (commProperty == None && dpy != NULL) | |
394 { | |
395 if (SendInit(dpy) < 0) | |
396 return -1; | |
397 } | |
398 | |
399 /* Execute locally if no display or target is ourselves */ | |
400 if (dpy == NULL || (serverName != NULL && STRICMP(name, serverName) == 0)) | |
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401 return sendToLocalVim(cmd, asExpr, result); |
7 | 402 |
403 /* | |
404 * Bind the server name to a communication window. | |
405 * | |
406 * Find any survivor with a serialno attached to the name if the | |
407 * original registrant of the wanted name is no longer present. | |
408 * | |
409 * Delete any lingering names from dead editors. | |
410 */ | |
411 while (TRUE) | |
412 { | |
413 w = LookupName(dpy, name, FALSE, &loosename); | |
414 /* Check that the window is hot */ | |
415 if (w != None) | |
416 { | |
417 if (!WindowValid(dpy, w)) | |
418 { | |
419 LookupName(dpy, loosename ? loosename : name, | |
420 /*DELETE=*/TRUE, NULL); | |
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421 vim_free(loosename); |
7 | 422 continue; |
423 } | |
424 } | |
425 break; | |
426 } | |
427 if (w == None) | |
428 { | |
429 if (!silent) | |
430 EMSG2(_(e_noserver), name); | |
431 return -1; | |
432 } | |
433 else if (loosename != NULL) | |
434 name = loosename; | |
435 if (server != NULL) | |
436 *server = w; | |
437 | |
438 /* | |
439 * Send the command to target interpreter by appending it to the | |
440 * comm window in the communication window. | |
500 | 441 * Length must be computed exactly! |
7 | 442 */ |
39 | 443 #ifdef FEAT_MBYTE |
500 | 444 length = STRLEN(name) + STRLEN(p_enc) + STRLEN(cmd) + 14; |
445 #else | |
446 length = STRLEN(name) + STRLEN(cmd) + 10; | |
39 | 447 #endif |
448 property = (char_u *)alloc((unsigned)length + 30); | |
7 | 449 |
39 | 450 #ifdef FEAT_MBYTE |
451 sprintf((char *)property, "%c%c%c-n %s%c-E %s%c-s %s", | |
452 0, asExpr ? 'c' : 'k', 0, name, 0, p_enc, 0, cmd); | |
453 #else | |
7 | 454 sprintf((char *)property, "%c%c%c-n %s%c-s %s", |
455 0, asExpr ? 'c' : 'k', 0, name, 0, cmd); | |
39 | 456 #endif |
7 | 457 if (name == loosename) |
458 vim_free(loosename); | |
459 /* Add a back reference to our comm window */ | |
460 serial++; | |
461 sprintf((char *)property + length, "%c-r %x %d", | |
462 0, (int_u)commWindow, serial); | |
500 | 463 /* Add length of what "-r %x %d" resulted in, skipping the NUL. */ |
7 | 464 length += STRLEN(property + length + 1) + 1; |
465 | |
466 res = AppendPropCarefully(dpy, w, commProperty, property, length + 1); | |
467 vim_free(property); | |
468 if (res < 0) | |
469 { | |
470 EMSG(_("E248: Failed to send command to the destination program")); | |
471 return -1; | |
472 } | |
473 | |
474 if (!asExpr) /* There is no answer for this - Keys are sent async */ | |
475 return 0; | |
476 | |
477 /* | |
478 * Register the fact that we're waiting for a command to | |
479 * complete (this is needed by SendEventProc and by | |
480 * AppendErrorProc to pass back the command's results). | |
481 */ | |
482 pending.serial = serial; | |
483 pending.code = 0; | |
484 pending.result = NULL; | |
485 pending.nextPtr = pendingCommands; | |
486 pendingCommands = &pending; | |
487 | |
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488 ServerWait(dpy, w, WaitForPend, &pending, localLoop, |
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489 timeout > 0 ? timeout : 600); |
7 | 490 |
491 /* | |
492 * Unregister the information about the pending command | |
493 * and return the result. | |
494 */ | |
495 if (pendingCommands == &pending) | |
496 pendingCommands = pending.nextPtr; | |
497 else | |
498 { | |
499 PendingCommand *pcPtr; | |
500 | |
501 for (pcPtr = pendingCommands; pcPtr != NULL; pcPtr = pcPtr->nextPtr) | |
502 if (pcPtr->nextPtr == &pending) | |
503 { | |
504 pcPtr->nextPtr = pending.nextPtr; | |
505 break; | |
506 } | |
507 } | |
508 if (result != NULL) | |
509 *result = pending.result; | |
510 else | |
511 vim_free(pending.result); | |
512 | |
513 return pending.code == 0 ? 0 : -1; | |
514 } | |
515 | |
516 static int | |
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517 WaitForPend(void *p) |
7 | 518 { |
519 PendingCommand *pending = (PendingCommand *) p; | |
520 return pending->result != NULL; | |
521 } | |
522 | |
523 /* | |
524 * Return TRUE if window "w" exists and has a "Vim" property on it. | |
525 */ | |
526 static int | |
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527 WindowValid(Display *dpy, Window w) |
7 | 528 { |
529 XErrorHandler old_handler; | |
530 Atom *plist; | |
531 int numProp; | |
532 int i; | |
533 | |
534 old_handler = XSetErrorHandler(x_error_check); | |
535 got_x_error = 0; | |
536 plist = XListProperties(dpy, w, &numProp); | |
537 XSync(dpy, False); | |
538 XSetErrorHandler(old_handler); | |
539 if (plist == NULL || got_x_error) | |
540 return FALSE; | |
541 | |
542 for (i = 0; i < numProp; i++) | |
543 if (plist[i] == vimProperty) | |
544 { | |
545 XFree(plist); | |
546 return TRUE; | |
547 } | |
548 XFree(plist); | |
549 return FALSE; | |
550 } | |
551 | |
552 /* | |
553 * Enter a loop processing X events & polling chars until we see a result | |
554 */ | |
555 static void | |
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556 ServerWait( |
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557 Display *dpy, |
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558 Window w, |
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559 EndCond endCond, |
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560 void *endData, |
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561 int localLoop, |
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562 int seconds) |
7 | 563 { |
564 time_t start; | |
565 time_t now; | |
566 XEvent event; | |
3670 | 567 |
568 #define UI_MSEC_DELAY 50 | |
569 #define SEND_MSEC_POLL 500 | |
570 #ifndef HAVE_SELECT | |
571 struct pollfd fds; | |
572 | |
573 fds.fd = ConnectionNumber(dpy); | |
574 fds.events = POLLIN; | |
575 #else | |
576 fd_set fds; | |
577 struct timeval tv; | |
578 | |
579 tv.tv_sec = 0; | |
580 tv.tv_usec = SEND_MSEC_POLL * 1000; | |
581 FD_ZERO(&fds); | |
582 FD_SET(ConnectionNumber(dpy), &fds); | |
583 #endif | |
7 | 584 |
585 time(&start); | |
3670 | 586 while (TRUE) |
7 | 587 { |
3670 | 588 while (XCheckWindowEvent(dpy, commWindow, PropertyChangeMask, &event)) |
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589 serverEventProc(dpy, &event, 1); |
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590 server_parse_messages(); |
3670 | 591 |
592 if (endCond(endData) != 0) | |
593 break; | |
594 if (!WindowValid(dpy, w)) | |
595 break; | |
7 | 596 time(&now); |
597 if (seconds >= 0 && (now - start) >= seconds) | |
598 break; | |
3670 | 599 |
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600 #ifdef FEAT_TIMERS |
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601 check_due_timer(); |
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602 #endif |
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603 |
3670 | 604 /* Just look out for the answer without calling back into Vim */ |
7 | 605 if (localLoop) |
606 { | |
607 #ifndef HAVE_SELECT | |
608 if (poll(&fds, 1, SEND_MSEC_POLL) < 0) | |
609 break; | |
610 #else | |
3670 | 611 if (select(FD_SETSIZE, &fds, NULL, NULL, &tv) < 0) |
7 | 612 break; |
613 #endif | |
614 } | |
615 else | |
616 { | |
617 if (got_int) | |
618 break; | |
3670 | 619 ui_delay((long)UI_MSEC_DELAY, TRUE); |
7 | 620 ui_breakcheck(); |
621 } | |
622 } | |
623 } | |
624 | |
625 | |
626 /* | |
627 * Fetch a list of all the Vim instance names currently registered for the | |
628 * display. | |
629 * | |
630 * Returns a newline separated list in allocated memory or NULL. | |
631 */ | |
632 char_u * | |
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633 serverGetVimNames(Display *dpy) |
7 | 634 { |
635 char_u *regProp; | |
636 char_u *entry; | |
637 char_u *p; | |
638 long_u numItems; | |
639 int_u w; | |
640 garray_T ga; | |
641 | |
642 if (registryProperty == None) | |
643 { | |
644 if (SendInit(dpy) < 0) | |
645 return NULL; | |
646 } | |
647 | |
648 /* | |
649 * Read the registry property. | |
650 */ | |
651 if (GetRegProp(dpy, ®Prop, &numItems, TRUE) == FAIL) | |
652 return NULL; | |
653 | |
654 /* | |
655 * Scan all of the names out of the property. | |
656 */ | |
657 ga_init2(&ga, 1, 100); | |
1880 | 658 for (p = regProp; (long_u)(p - regProp) < numItems; p++) |
7 | 659 { |
660 entry = p; | |
661 while (*p != 0 && !isspace(*p)) | |
662 p++; | |
663 if (*p != 0) | |
664 { | |
665 w = None; | |
666 sscanf((char *)entry, "%x", &w); | |
667 if (WindowValid(dpy, (Window)w)) | |
668 { | |
669 ga_concat(&ga, p + 1); | |
670 ga_concat(&ga, (char_u *)"\n"); | |
671 } | |
672 while (*p != 0) | |
673 p++; | |
674 } | |
675 } | |
676 if (regProp != empty_prop) | |
677 XFree(regProp); | |
21 | 678 ga_append(&ga, NUL); |
7 | 679 return ga.ga_data; |
680 } | |
681 | |
682 /* ---------------------------------------------------------- | |
683 * Reply stuff | |
684 */ | |
685 | |
686 static struct ServerReply * | |
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687 ServerReplyFind(Window w, enum ServerReplyOp op) |
7 | 688 { |
689 struct ServerReply *p; | |
690 struct ServerReply e; | |
691 int i; | |
692 | |
693 p = (struct ServerReply *) serverReply.ga_data; | |
694 for (i = 0; i < serverReply.ga_len; i++, p++) | |
695 if (p->id == w) | |
696 break; | |
697 if (i >= serverReply.ga_len) | |
698 p = NULL; | |
699 | |
700 if (p == NULL && op == SROP_Add) | |
701 { | |
702 if (serverReply.ga_growsize == 0) | |
703 ga_init2(&serverReply, sizeof(struct ServerReply), 1); | |
704 if (ga_grow(&serverReply, 1) == OK) | |
705 { | |
706 p = ((struct ServerReply *) serverReply.ga_data) | |
707 + serverReply.ga_len; | |
708 e.id = w; | |
709 ga_init2(&e.strings, 1, 100); | |
1740 | 710 mch_memmove(p, &e, sizeof(e)); |
7 | 711 serverReply.ga_len++; |
712 } | |
713 } | |
714 else if (p != NULL && op == SROP_Delete) | |
715 { | |
716 ga_clear(&p->strings); | |
717 mch_memmove(p, p + 1, (serverReply.ga_len - i - 1) * sizeof(*p)); | |
718 serverReply.ga_len--; | |
719 } | |
720 | |
721 return p; | |
722 } | |
723 | |
724 /* | |
725 * Convert string to windowid. | |
726 * Issue an error if the id is invalid. | |
727 */ | |
728 Window | |
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729 serverStrToWin(char_u *str) |
7 | 730 { |
731 unsigned id = None; | |
732 | |
733 sscanf((char *)str, "0x%x", &id); | |
734 if (id == None) | |
735 EMSG2(_("E573: Invalid server id used: %s"), str); | |
736 | |
737 return (Window)id; | |
738 } | |
739 | |
740 /* | |
39 | 741 * Send a reply string (notification) to client with id "name". |
7 | 742 * Return -1 if the window is invalid. |
743 */ | |
744 int | |
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745 serverSendReply(char_u *name, char_u *str) |
7 | 746 { |
747 char_u *property; | |
748 int length; | |
749 int res; | |
750 Display *dpy = X_DISPLAY; | |
751 Window win = serverStrToWin(name); | |
752 | |
753 if (commProperty == None) | |
754 { | |
755 if (SendInit(dpy) < 0) | |
756 return -2; | |
757 } | |
758 if (!WindowValid(dpy, win)) | |
759 return -1; | |
760 | |
39 | 761 #ifdef FEAT_MBYTE |
500 | 762 length = STRLEN(p_enc) + STRLEN(str) + 14; |
763 #else | |
764 length = STRLEN(str) + 10; | |
39 | 765 #endif |
766 if ((property = (char_u *)alloc((unsigned)length + 30)) != NULL) | |
7 | 767 { |
39 | 768 #ifdef FEAT_MBYTE |
769 sprintf((char *)property, "%cn%c-E %s%c-n %s%c-w %x", | |
770 0, 0, p_enc, 0, str, 0, (unsigned int)commWindow); | |
771 #else | |
772 sprintf((char *)property, "%cn%c-n %s%c-w %x", | |
773 0, 0, str, 0, (unsigned int)commWindow); | |
774 #endif | |
500 | 775 /* Add length of what "%x" resulted in. */ |
7 | 776 length += STRLEN(property + length); |
777 res = AppendPropCarefully(dpy, win, commProperty, property, length + 1); | |
778 vim_free(property); | |
779 return res; | |
780 } | |
781 return -1; | |
782 } | |
783 | |
784 static int | |
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785 WaitForReply(void *p) |
7 | 786 { |
787 Window *w = (Window *) p; | |
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788 |
7 | 789 return ServerReplyFind(*w, SROP_Find) != NULL; |
790 } | |
791 | |
792 /* | |
793 * Wait for replies from id (win) | |
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794 * When "timeout" is non-zero wait up to this many seconds. |
7 | 795 * Return 0 and the malloc'ed string when a reply is available. |
796 * Return -1 if the window becomes invalid while waiting. | |
797 */ | |
798 int | |
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799 serverReadReply( |
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800 Display *dpy, |
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801 Window win, |
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802 char_u **str, |
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803 int localLoop, |
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804 int timeout) |
7 | 805 { |
806 int len; | |
807 char_u *s; | |
808 struct ServerReply *p; | |
809 | |
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810 ServerWait(dpy, win, WaitForReply, &win, localLoop, |
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811 timeout > 0 ? timeout : -1); |
7 | 812 |
813 if ((p = ServerReplyFind(win, SROP_Find)) != NULL && p->strings.ga_len > 0) | |
814 { | |
815 *str = vim_strsave(p->strings.ga_data); | |
816 len = STRLEN(*str) + 1; | |
817 if (len < p->strings.ga_len) | |
818 { | |
819 s = (char_u *) p->strings.ga_data; | |
820 mch_memmove(s, s + len, p->strings.ga_len - len); | |
821 p->strings.ga_len -= len; | |
822 } | |
823 else | |
824 { | |
825 /* Last string read. Remove from list */ | |
826 ga_clear(&p->strings); | |
827 ServerReplyFind(win, SROP_Delete); | |
828 } | |
829 return 0; | |
830 } | |
831 return -1; | |
832 } | |
833 | |
834 /* | |
835 * Check for replies from id (win). | |
836 * Return TRUE and a non-malloc'ed string if there is. Else return FALSE. | |
837 */ | |
838 int | |
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839 serverPeekReply(Display *dpy, Window win, char_u **str) |
7 | 840 { |
841 struct ServerReply *p; | |
842 | |
843 if ((p = ServerReplyFind(win, SROP_Find)) != NULL && p->strings.ga_len > 0) | |
844 { | |
845 if (str != NULL) | |
846 *str = p->strings.ga_data; | |
847 return 1; | |
848 } | |
849 if (!WindowValid(dpy, win)) | |
850 return -1; | |
851 return 0; | |
852 } | |
853 | |
854 | |
855 /* | |
856 * Initialize the communication channels for sending commands and receiving | |
857 * results. | |
858 */ | |
859 static int | |
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860 SendInit(Display *dpy) |
7 | 861 { |
862 XErrorHandler old_handler; | |
863 | |
864 /* | |
865 * Create the window used for communication, and set up an | |
866 * event handler for it. | |
867 */ | |
868 old_handler = XSetErrorHandler(x_error_check); | |
869 got_x_error = FALSE; | |
870 | |
871 if (commProperty == None) | |
872 commProperty = XInternAtom(dpy, "Comm", False); | |
873 if (vimProperty == None) | |
874 vimProperty = XInternAtom(dpy, "Vim", False); | |
875 if (registryProperty == None) | |
876 registryProperty = XInternAtom(dpy, "VimRegistry", False); | |
877 | |
878 if (commWindow == None) | |
879 { | |
880 commWindow = XCreateSimpleWindow(dpy, XDefaultRootWindow(dpy), | |
881 getpid(), 0, 10, 10, 0, | |
882 WhitePixel(dpy, DefaultScreen(dpy)), | |
883 WhitePixel(dpy, DefaultScreen(dpy))); | |
884 XSelectInput(dpy, commWindow, PropertyChangeMask); | |
885 /* WARNING: Do not step through this while debugging, it will hangup | |
886 * the X server! */ | |
887 XGrabServer(dpy); | |
888 DeleteAnyLingerer(dpy, commWindow); | |
889 XUngrabServer(dpy); | |
890 } | |
891 | |
892 /* Make window recognizable as a vim window */ | |
893 XChangeProperty(dpy, commWindow, vimProperty, XA_STRING, | |
894 8, PropModeReplace, (char_u *)VIM_VERSION_SHORT, | |
895 (int)STRLEN(VIM_VERSION_SHORT) + 1); | |
896 | |
897 XSync(dpy, False); | |
898 (void)XSetErrorHandler(old_handler); | |
899 | |
900 return got_x_error ? -1 : 0; | |
901 } | |
902 | |
903 /* | |
904 * Given a server name, see if the name exists in the registry for a | |
905 * particular display. | |
906 * | |
907 * If the given name is registered, return the ID of the window associated | |
908 * with the name. If the name isn't registered, then return 0. | |
909 * | |
910 * Side effects: | |
911 * If the registry property is improperly formed, then it is deleted. | |
912 * If "delete" is non-zero, then if the named server is found it is | |
913 * removed from the registry property. | |
914 */ | |
915 static Window | |
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916 LookupName( |
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917 Display *dpy, /* Display whose registry to check. */ |
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918 char_u *name, /* Name of a server. */ |
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919 int delete, /* If non-zero, delete info about name. */ |
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920 char_u **loose) /* Do another search matching -999 if not found |
7 | 921 Return result here if a match is found */ |
922 { | |
923 char_u *regProp, *entry; | |
924 char_u *p; | |
925 long_u numItems; | |
926 int_u returnValue; | |
927 | |
928 /* | |
929 * Read the registry property. | |
930 */ | |
931 if (GetRegProp(dpy, ®Prop, &numItems, FALSE) == FAIL) | |
932 return 0; | |
933 | |
934 /* | |
935 * Scan the property for the desired name. | |
936 */ | |
937 returnValue = (int_u)None; | |
938 entry = NULL; /* Not needed, but eliminates compiler warning. */ | |
1880 | 939 for (p = regProp; (long_u)(p - regProp) < numItems; ) |
7 | 940 { |
941 entry = p; | |
942 while (*p != 0 && !isspace(*p)) | |
943 p++; | |
944 if (*p != 0 && STRICMP(name, p + 1) == 0) | |
945 { | |
946 sscanf((char *)entry, "%x", &returnValue); | |
947 break; | |
948 } | |
949 while (*p != 0) | |
950 p++; | |
951 p++; | |
952 } | |
953 | |
954 if (loose != NULL && returnValue == (int_u)None && !IsSerialName(name)) | |
955 { | |
1880 | 956 for (p = regProp; (long_u)(p - regProp) < numItems; ) |
7 | 957 { |
958 entry = p; | |
959 while (*p != 0 && !isspace(*p)) | |
960 p++; | |
961 if (*p != 0 && IsSerialName(p + 1) | |
962 && STRNICMP(name, p + 1, STRLEN(name)) == 0) | |
963 { | |
964 sscanf((char *)entry, "%x", &returnValue); | |
965 *loose = vim_strsave(p + 1); | |
966 break; | |
967 } | |
968 while (*p != 0) | |
969 p++; | |
970 p++; | |
971 } | |
972 } | |
973 | |
974 /* | |
975 * Delete the property, if that is desired (copy down the | |
976 * remainder of the registry property to overlay the deleted | |
977 * info, then rewrite the property). | |
978 */ | |
979 if (delete && returnValue != (int_u)None) | |
980 { | |
981 int count; | |
982 | |
983 while (*p != 0) | |
984 p++; | |
985 p++; | |
986 count = numItems - (p - regProp); | |
987 if (count > 0) | |
1740 | 988 mch_memmove(entry, p, count); |
7 | 989 XChangeProperty(dpy, RootWindow(dpy, 0), registryProperty, XA_STRING, |
990 8, PropModeReplace, regProp, | |
991 (int)(numItems - (p - entry))); | |
992 XSync(dpy, False); | |
993 } | |
994 | |
995 if (regProp != empty_prop) | |
996 XFree(regProp); | |
997 return (Window)returnValue; | |
998 } | |
999 | |
1000 /* | |
1197 | 1001 * Delete any lingering occurrence of window id. We promise that any |
1002 * occurrence is not ours since it is not yet put into the registry (by us) | |
7 | 1003 * |
1004 * This is necessary in the following scenario: | |
1005 * 1. There is an old windowid for an exit'ed vim in the registry | |
1006 * 2. We get that id for our commWindow but only want to send, not register. | |
1007 * 3. The window will mistakenly be regarded valid because of own commWindow | |
1008 */ | |
1009 static void | |
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1010 DeleteAnyLingerer( |
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1011 Display *dpy, /* Display whose registry to check. */ |
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1012 Window win) /* Window to remove */ |
7 | 1013 { |
1014 char_u *regProp, *entry = NULL; | |
1015 char_u *p; | |
1016 long_u numItems; | |
28 | 1017 int_u wwin; |
7 | 1018 |
1019 /* | |
1020 * Read the registry property. | |
1021 */ | |
1022 if (GetRegProp(dpy, ®Prop, &numItems, FALSE) == FAIL) | |
1023 return; | |
1024 | |
1025 /* Scan the property for the window id. */ | |
1880 | 1026 for (p = regProp; (long_u)(p - regProp) < numItems; ) |
7 | 1027 { |
1028 if (*p != 0) | |
1029 { | |
28 | 1030 sscanf((char *)p, "%x", &wwin); |
1031 if ((Window)wwin == win) | |
7 | 1032 { |
1033 int lastHalf; | |
1034 | |
1035 /* Copy down the remainder to delete entry */ | |
1036 entry = p; | |
1037 while (*p != 0) | |
1038 p++; | |
1039 p++; | |
1040 lastHalf = numItems - (p - regProp); | |
1041 if (lastHalf > 0) | |
1740 | 1042 mch_memmove(entry, p, lastHalf); |
7 | 1043 numItems = (entry - regProp) + lastHalf; |
1044 p = entry; | |
1045 continue; | |
1046 } | |
1047 } | |
1048 while (*p != 0) | |
1049 p++; | |
1050 p++; | |
1051 } | |
1052 | |
1053 if (entry != NULL) | |
1054 { | |
1055 XChangeProperty(dpy, RootWindow(dpy, 0), registryProperty, | |
1056 XA_STRING, 8, PropModeReplace, regProp, | |
1057 (int)(p - regProp)); | |
1058 XSync(dpy, False); | |
1059 } | |
1060 | |
1061 if (regProp != empty_prop) | |
1062 XFree(regProp); | |
1063 } | |
1064 | |
1065 /* | |
1066 * Read the registry property. Delete it when it's formatted wrong. | |
1067 * Return the property in "regPropp". "empty_prop" is used when it doesn't | |
1068 * exist yet. | |
1069 * Return OK when successful. | |
1070 */ | |
1071 static int | |
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1072 GetRegProp( |
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1073 Display *dpy, |
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1074 char_u **regPropp, |
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1075 long_u *numItemsp, |
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1076 int domsg) /* When TRUE give error message. */ |
7 | 1077 { |
1078 int result, actualFormat; | |
1079 long_u bytesAfter; | |
1080 Atom actualType; | |
819 | 1081 XErrorHandler old_handler; |
7 | 1082 |
1083 *regPropp = NULL; | |
819 | 1084 old_handler = XSetErrorHandler(x_error_check); |
1085 got_x_error = FALSE; | |
1086 | |
7 | 1087 result = XGetWindowProperty(dpy, RootWindow(dpy, 0), registryProperty, 0L, |
1088 (long)MAX_PROP_WORDS, False, | |
1089 XA_STRING, &actualType, | |
1090 &actualFormat, numItemsp, &bytesAfter, | |
1091 regPropp); | |
1092 | |
819 | 1093 XSync(dpy, FALSE); |
1094 (void)XSetErrorHandler(old_handler); | |
1095 if (got_x_error) | |
1096 return FAIL; | |
1097 | |
7 | 1098 if (actualType == None) |
1099 { | |
1100 /* No prop yet. Logically equal to the empty list */ | |
1101 *numItemsp = 0; | |
1102 *regPropp = empty_prop; | |
1103 return OK; | |
1104 } | |
1105 | |
1106 /* If the property is improperly formed, then delete it. */ | |
1107 if (result != Success || actualFormat != 8 || actualType != XA_STRING) | |
1108 { | |
1109 if (*regPropp != NULL) | |
1110 XFree(*regPropp); | |
1111 XDeleteProperty(dpy, RootWindow(dpy, 0), registryProperty); | |
1112 if (domsg) | |
1113 EMSG(_("E251: VIM instance registry property is badly formed. Deleted!")); | |
1114 return FAIL; | |
1115 } | |
1116 return OK; | |
1117 } | |
1118 | |
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1119 |
7 | 1120 /* |
1197 | 1121 * This procedure is invoked by the various X event loops throughout Vims when |
7 | 1122 * a property changes on the communication window. This procedure reads the |
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1123 * property and enqueues command requests and responses. If immediate is true, |
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1124 * it runs the event immediately instead of enqueuing it. Immediate can cause |
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1125 * unintended behavior and should only be used for code that blocks for a |
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1126 * response. |
7 | 1127 */ |
1128 void | |
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1129 serverEventProc( |
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1130 Display *dpy, |
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1131 XEvent *eventPtr, /* Information about event. */ |
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1132 int immediate) /* Run event immediately. Should mostly be 0. */ |
7 | 1133 { |
1134 char_u *propInfo; | |
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1135 int result, actualFormat; |
7 | 1136 long_u numItems, bytesAfter; |
1137 Atom actualType; | |
1138 | |
1139 if (eventPtr != NULL) | |
1140 { | |
1141 if (eventPtr->xproperty.atom != commProperty | |
1142 || eventPtr->xproperty.state != PropertyNewValue) | |
1143 return; | |
1144 } | |
1145 | |
1146 /* | |
1147 * Read the comm property and delete it. | |
1148 */ | |
1149 propInfo = NULL; | |
1150 result = XGetWindowProperty(dpy, commWindow, commProperty, 0L, | |
1151 (long)MAX_PROP_WORDS, True, | |
1152 XA_STRING, &actualType, | |
1153 &actualFormat, &numItems, &bytesAfter, | |
1154 &propInfo); | |
1155 | |
1156 /* If the property doesn't exist or is improperly formed then ignore it. */ | |
1157 if (result != Success || actualType != XA_STRING || actualFormat != 8) | |
1158 { | |
1159 if (propInfo != NULL) | |
1160 XFree(propInfo); | |
1161 return; | |
1162 } | |
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1163 if (immediate) |
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1164 server_parse_message(dpy, propInfo, numItems); |
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1165 else |
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1166 save_in_queue(propInfo, numItems); |
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1167 } |
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1168 |
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1169 /* |
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1170 * Saves x clientserver commands in a queue so that they can be called when |
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1171 * vim is idle. |
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1172 */ |
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1173 static void |
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1174 save_in_queue(char_u *propInfo, long_u len) |
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1175 { |
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1176 x_queue_T *node; |
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1177 |
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1178 node = (x_queue_T *)alloc(sizeof(x_queue_T)); |
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1179 if (node == NULL) |
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1180 return; /* out of memory */ |
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1181 node->propInfo = propInfo; |
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1182 node->len = len; |
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1183 |
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1184 if (head.next == NULL) /* initialize circular queue */ |
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1185 { |
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1186 head.next = &head; |
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1187 head.prev = &head; |
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1188 } |
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1189 |
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1190 /* insert node at tail of queue */ |
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1191 node->next = &head; |
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1192 node->prev = head.prev; |
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1193 head.prev->next = node; |
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1194 head.prev = node; |
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1195 } |
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1196 |
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1197 /* |
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1198 * Parses queued clientserver messages. |
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1199 */ |
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1200 void |
7823
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1201 server_parse_messages(void) |
7109
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1202 { |
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1203 x_queue_T *node; |
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1204 |
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1205 if (!X_DISPLAY) |
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1206 return; /* cannot happen? */ |
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1207 while (head.next != NULL && head.next != &head) |
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1208 { |
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1209 node = head.next; |
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1210 head.next = node->next; |
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1211 node->next->prev = node->prev; |
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1212 server_parse_message(X_DISPLAY, node->propInfo, node->len); |
7109
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1213 vim_free(node); |
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1214 } |
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1215 } |
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1216 |
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1217 /* |
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1218 * Returns a non-zero value if there are clientserver messages waiting |
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1219 * int the queue. |
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1220 */ |
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1221 int |
7823
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1222 server_waiting(void) |
7109
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1223 { |
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1224 return head.next != NULL && head.next != &head; |
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1225 } |
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1226 |
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1227 /* |
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1228 * Prases a single clientserver message. A single message may contain multiple |
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1229 * commands. |
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1230 * "propInfo" will be freed. |
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1231 */ |
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1232 static void |
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1233 server_parse_message( |
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1234 Display *dpy, |
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1235 char_u *propInfo, /* A string containing 0 or more X commands */ |
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1236 long_u numItems) /* The size of propInfo in bytes. */ |
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1237 { |
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1238 char_u *p; |
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1239 int code; |
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1240 char_u *tofree; |
7 | 1241 |
1242 /* | |
1243 * Several commands and results could arrive in the property at | |
1244 * one time; each iteration through the outer loop handles a | |
1245 * single command or result. | |
1246 */ | |
1880 | 1247 for (p = propInfo; (long_u)(p - propInfo) < numItems; ) |
7 | 1248 { |
1249 /* | |
1250 * Ignore leading NULs; each command or result starts with a | |
1251 * NUL so that no matter how badly formed a preceding command | |
1252 * is, we'll be able to tell that a new command/result is | |
1253 * starting. | |
1254 */ | |
1255 if (*p == 0) | |
1256 { | |
1257 p++; | |
1258 continue; | |
1259 } | |
1260 | |
1261 if ((*p == 'c' || *p == 'k') && (p[1] == 0)) | |
1262 { | |
1263 Window resWindow; | |
3668 | 1264 char_u *name, *script, *serial, *end; |
7 | 1265 Bool asKeys = *p == 'k'; |
39 | 1266 char_u *enc; |
7 | 1267 |
1268 /* | |
1269 * This is an incoming command from some other application. | |
1270 * Iterate over all of its options. Stop when we reach | |
1271 * the end of the property or something that doesn't look | |
1272 * like an option. | |
1273 */ | |
1274 p += 2; | |
1275 name = NULL; | |
1276 resWindow = None; | |
1277 serial = (char_u *)""; | |
1278 script = NULL; | |
39 | 1279 enc = NULL; |
1880 | 1280 while ((long_u)(p - propInfo) < numItems && *p == '-') |
7 | 1281 { |
1282 switch (p[1]) | |
1283 { | |
1284 case 'r': | |
1285 end = skipwhite(p + 2); | |
1286 resWindow = 0; | |
1287 while (vim_isxdigit(*end)) | |
1288 { | |
1289 resWindow = 16 * resWindow + (long_u)hex2nr(*end); | |
1290 ++end; | |
1291 } | |
1292 if (end == p + 2 || *end != ' ') | |
1293 resWindow = None; | |
1294 else | |
1295 { | |
1296 p = serial = end + 1; | |
1297 clientWindow = resWindow; /* Remember in global */ | |
1298 } | |
1299 break; | |
1300 case 'n': | |
1301 if (p[2] == ' ') | |
1302 name = p + 3; | |
1303 break; | |
1304 case 's': | |
1305 if (p[2] == ' ') | |
1306 script = p + 3; | |
1307 break; | |
39 | 1308 case 'E': |
1309 if (p[2] == ' ') | |
1310 enc = p + 3; | |
1311 break; | |
7 | 1312 } |
1313 while (*p != 0) | |
1314 p++; | |
1315 p++; | |
1316 } | |
1317 | |
1318 if (script == NULL || name == NULL) | |
1319 continue; | |
1320 | |
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1321 if (serverName != NULL && STRICMP(name, serverName) == 0) |
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1322 { |
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1323 script = serverConvert(enc, script, &tofree); |
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1324 if (asKeys) |
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1325 server_to_input_buf(script); |
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1326 else |
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1327 { |
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1328 char_u *res; |
3668 | 1329 |
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1330 res = eval_client_expr_to_string(script); |
3668 | 1331 if (resWindow != None) |
1332 { | |
1333 garray_T reply; | |
1334 | |
1335 /* Initialize the result property. */ | |
1336 ga_init2(&reply, 1, 100); | |
39 | 1337 #ifdef FEAT_MBYTE |
7009 | 1338 (void)ga_grow(&reply, 50 + STRLEN(p_enc)); |
3668 | 1339 sprintf(reply.ga_data, "%cr%c-E %s%c-s %s%c-r ", |
39 | 1340 0, 0, p_enc, 0, serial, 0); |
3668 | 1341 reply.ga_len = 14 + STRLEN(p_enc) + STRLEN(serial); |
39 | 1342 #else |
7009 | 1343 (void)ga_grow(&reply, 50); |
3668 | 1344 sprintf(reply.ga_data, "%cr%c-s %s%c-r ", |
1345 0, 0, serial, 0); | |
1346 reply.ga_len = 10 + STRLEN(serial); | |
39 | 1347 #endif |
3668 | 1348 |
1349 /* Evaluate the expression and return the result. */ | |
1350 if (res != NULL) | |
1351 ga_concat(&reply, res); | |
1352 else | |
1353 { | |
1354 ga_concat(&reply, (char_u *)_(e_invexprmsg)); | |
1355 ga_append(&reply, 0); | |
1356 ga_concat(&reply, (char_u *)"-c 1"); | |
1357 } | |
1358 ga_append(&reply, NUL); | |
1359 (void)AppendPropCarefully(dpy, resWindow, commProperty, | |
1360 reply.ga_data, reply.ga_len); | |
1361 ga_clear(&reply); | |
1362 } | |
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1363 vim_free(res); |
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1364 } |
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commit https://github.com/vim/vim/commit/93c88e0f6a4a8f7634ed84721daf4af46fc0d5db
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1365 vim_free(tofree); |
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commit https://github.com/vim/vim/commit/93c88e0f6a4a8f7634ed84721daf4af46fc0d5db
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1366 } |
7 | 1367 } |
1368 else if (*p == 'r' && p[1] == 0) | |
1369 { | |
39 | 1370 int serial, gotSerial; |
1371 char_u *res; | |
1372 PendingCommand *pcPtr; | |
1373 char_u *enc; | |
7 | 1374 |
1375 /* | |
1376 * This is a reply to some command that we sent out. Iterate | |
1377 * over all of its options. Stop when we reach the end of the | |
1378 * property or something that doesn't look like an option. | |
1379 */ | |
1380 p += 2; | |
1381 gotSerial = 0; | |
1382 res = (char_u *)""; | |
1383 code = 0; | |
39 | 1384 enc = NULL; |
1880 | 1385 while ((long_u)(p - propInfo) < numItems && *p == '-') |
7 | 1386 { |
1387 switch (p[1]) | |
1388 { | |
1389 case 'r': | |
1390 if (p[2] == ' ') | |
1391 res = p + 3; | |
1392 break; | |
39 | 1393 case 'E': |
1394 if (p[2] == ' ') | |
1395 enc = p + 3; | |
1396 break; | |
7 | 1397 case 's': |
1398 if (sscanf((char *)p + 2, " %d", &serial) == 1) | |
1399 gotSerial = 1; | |
1400 break; | |
1401 case 'c': | |
1402 if (sscanf((char *)p + 2, " %d", &code) != 1) | |
1403 code = 0; | |
1404 break; | |
1405 } | |
1406 while (*p != 0) | |
1407 p++; | |
1408 p++; | |
1409 } | |
1410 | |
1411 if (!gotSerial) | |
1412 continue; | |
1413 | |
1414 /* | |
1415 * Give the result information to anyone who's | |
1416 * waiting for it. | |
1417 */ | |
1418 for (pcPtr = pendingCommands; pcPtr != NULL; pcPtr = pcPtr->nextPtr) | |
1419 { | |
1420 if (serial != pcPtr->serial || pcPtr->result != NULL) | |
1421 continue; | |
1422 | |
1423 pcPtr->code = code; | |
7009 | 1424 res = serverConvert(enc, res, &tofree); |
1425 if (tofree == NULL) | |
1426 res = vim_strsave(res); | |
1427 pcPtr->result = res; | |
7 | 1428 break; |
1429 } | |
1430 } | |
1431 else if (*p == 'n' && p[1] == 0) | |
1432 { | |
1433 Window win = 0; | |
1434 unsigned int u; | |
1435 int gotWindow; | |
1436 char_u *str; | |
1437 struct ServerReply *r; | |
39 | 1438 char_u *enc; |
7 | 1439 |
1440 /* | |
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1441 * This is a (n)otification. Sent with serverreply_send in Vim |
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1442 * script. Execute any autocommand and save it for later retrieval |
7 | 1443 */ |
1444 p += 2; | |
1445 gotWindow = 0; | |
1446 str = (char_u *)""; | |
39 | 1447 enc = NULL; |
1880 | 1448 while ((long_u)(p - propInfo) < numItems && *p == '-') |
7 | 1449 { |
1450 switch (p[1]) | |
1451 { | |
1452 case 'n': | |
1453 if (p[2] == ' ') | |
1454 str = p + 3; | |
1455 break; | |
39 | 1456 case 'E': |
1457 if (p[2] == ' ') | |
1458 enc = p + 3; | |
1459 break; | |
7 | 1460 case 'w': |
1461 if (sscanf((char *)p + 2, " %x", &u) == 1) | |
1462 { | |
1463 win = u; | |
1464 gotWindow = 1; | |
1465 } | |
1466 break; | |
1467 } | |
1468 while (*p != 0) | |
1469 p++; | |
1470 p++; | |
1471 } | |
1472 | |
1473 if (!gotWindow) | |
1474 continue; | |
39 | 1475 str = serverConvert(enc, str, &tofree); |
7 | 1476 if ((r = ServerReplyFind(win, SROP_Add)) != NULL) |
1477 { | |
1478 ga_concat(&(r->strings), str); | |
21 | 1479 ga_append(&(r->strings), NUL); |
7 | 1480 } |
1698 | 1481 { |
1482 char_u winstr[30]; | |
1483 | |
1484 sprintf((char *)winstr, "0x%x", (unsigned int)win); | |
1485 apply_autocmds(EVENT_REMOTEREPLY, winstr, str, TRUE, curbuf); | |
1486 } | |
39 | 1487 vim_free(tofree); |
7 | 1488 } |
1489 else | |
1490 { | |
1491 /* | |
1492 * Didn't recognize this thing. Just skip through the next | |
1493 * null character and try again. | |
1494 * Even if we get an 'r'(eply) we will throw it away as we | |
1495 * never specify (and thus expect) one | |
1496 */ | |
1497 while (*p != 0) | |
1498 p++; | |
1499 p++; | |
1500 } | |
1501 } | |
1502 XFree(propInfo); | |
1503 } | |
1504 | |
1505 /* | |
1506 * Append a given property to a given window, but set up an X error handler so | |
1507 * that if the append fails this procedure can return an error code rather | |
1508 * than having Xlib panic. | |
1509 * Return: 0 for OK, -1 for error | |
1510 */ | |
1511 static int | |
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1512 AppendPropCarefully( |
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1513 Display *dpy, /* Display on which to operate. */ |
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1514 Window window, /* Window whose property is to be modified. */ |
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1515 Atom property, /* Name of property. */ |
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commit https://github.com/vim/vim/commit/68c2f638e65d914dc6e84eb7ce2624f08af525c0
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1516 char_u *value, /* Characters to append to property. */ |
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commit https://github.com/vim/vim/commit/68c2f638e65d914dc6e84eb7ce2624f08af525c0
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parents:
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1517 int length) /* How much to append */ |
7 | 1518 { |
1519 XErrorHandler old_handler; | |
1520 | |
1521 old_handler = XSetErrorHandler(x_error_check); | |
1522 got_x_error = FALSE; | |
1523 XChangeProperty(dpy, window, property, XA_STRING, 8, | |
1524 PropModeAppend, value, length); | |
1525 XSync(dpy, False); | |
1526 (void) XSetErrorHandler(old_handler); | |
1527 return got_x_error ? -1 : 0; | |
1528 } | |
1529 | |
1530 | |
1531 /* | |
1532 * Another X Error handler, just used to check for errors. | |
1533 */ | |
1534 static int | |
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parents:
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1535 x_error_check(Display *dpy UNUSED, XErrorEvent *error_event UNUSED) |
7 | 1536 { |
1537 got_x_error = TRUE; | |
1538 return 0; | |
1539 } | |
1540 | |
1541 /* | |
1542 * Check if "str" looks like it had a serial number appended. | |
1543 * Actually just checks if the name ends in a digit. | |
1544 */ | |
1545 static int | |
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diff
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1546 IsSerialName(char_u *str) |
7 | 1547 { |
1548 int len = STRLEN(str); | |
1549 | |
1550 return (len > 1 && vim_isdigit(str[len - 1])); | |
1551 } | |
1552 #endif /* FEAT_CLIENTSERVER */ |