Mercurial > hg > RemoteEditor > vim7
annotate src/if_xcmdsrv.c @ 39:c16898406ff2
synchorinize version 7.3.081
| author | one@zeus.cr.ie.u-ryukyu.ac.jp |
|---|---|
| date | Fri, 17 Dec 2010 17:43:06 +0900 |
| parents | e170173ecb68 |
| children | 67300faee616 |
| rev | line source |
|---|---|
| 0 | 1 /* vi:set ts=8 sts=4 sw=4: |
| 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 /* | |
| 25 * This file provides procedures that implement the command server | |
| 26 * functionality of Vim when in contact with an X11 server. | |
| 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 | |
| 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: | |
| 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 * | |
| 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 * | |
| 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 | |
| 170 typedef int (*EndCond) __ARGS((void *)); | |
| 171 | |
| 172 /* | |
| 173 * Forward declarations for procedures defined later in this file: | |
| 174 */ | |
| 175 | |
| 176 static Window LookupName __ARGS((Display *dpy, char_u *name, int delete, char_u **loose)); | |
| 177 static int SendInit __ARGS((Display *dpy)); | |
| 178 static int DoRegisterName __ARGS((Display *dpy, char_u *name)); | |
| 179 static void DeleteAnyLingerer __ARGS((Display *dpy, Window w)); | |
| 180 static int GetRegProp __ARGS((Display *dpy, char_u **regPropp, long_u *numItemsp, int domsg)); | |
| 181 static int WaitForPend __ARGS((void *p)); | |
| 182 static int WaitForReply __ARGS((void *p)); | |
| 183 static int WindowValid __ARGS((Display *dpy, Window w)); | |
| 184 static void ServerWait __ARGS((Display *dpy, Window w, EndCond endCond, void *endData, int localLoop, int seconds)); | |
| 185 static struct ServerReply *ServerReplyFind __ARGS((Window w, enum ServerReplyOp op)); | |
| 186 static int AppendPropCarefully __ARGS((Display *display, Window window, Atom property, char_u *value, int length)); | |
| 187 static int x_error_check __ARGS((Display *dpy, XErrorEvent *error_event)); | |
| 188 static int IsSerialName __ARGS((char_u *name)); | |
| 189 | |
| 190 /* Private variables for the "server" functionality */ | |
| 191 static Atom registryProperty = None; | |
| 192 static Atom vimProperty = None; | |
| 193 static int got_x_error = FALSE; | |
| 194 | |
| 195 static char_u *empty_prop = (char_u *)""; /* empty GetRegProp() result */ | |
| 196 | |
| 197 /* | |
| 198 * Associate an ASCII name with Vim. Try real hard to get a unique one. | |
| 199 * Returns FAIL or OK. | |
| 200 */ | |
| 201 int | |
| 202 serverRegisterName(dpy, name) | |
| 203 Display *dpy; /* display to register with */ | |
| 204 char_u *name; /* the name that will be used as a base */ | |
| 205 { | |
| 206 int i; | |
| 207 int res; | |
| 208 char_u *p = NULL; | |
| 209 | |
| 210 res = DoRegisterName(dpy, name); | |
| 211 if (res < 0) | |
| 212 { | |
| 213 i = 1; | |
| 214 do | |
| 215 { | |
| 216 if (res < -1 || i >= 1000) | |
| 217 { | |
| 218 MSG_ATTR(_("Unable to register a command server name"), | |
| 219 hl_attr(HLF_W)); | |
| 220 return FAIL; | |
| 221 } | |
| 222 if (p == NULL) | |
| 223 p = alloc(STRLEN(name) + 10); | |
| 224 if (p == NULL) | |
| 225 { | |
| 226 res = -10; | |
| 227 continue; | |
| 228 } | |
| 229 sprintf((char *)p, "%s%d", name, i++); | |
| 230 res = DoRegisterName(dpy, p); | |
| 231 } | |
| 232 while (res < 0) | |
| 233 ; | |
| 234 vim_free(p); | |
| 235 } | |
| 236 return OK; | |
| 237 } | |
| 238 | |
| 239 static int | |
| 240 DoRegisterName(dpy, name) | |
| 241 Display *dpy; | |
| 242 char_u *name; | |
| 243 { | |
| 244 Window w; | |
| 245 XErrorHandler old_handler; | |
| 246 #define MAX_NAME_LENGTH 100 | |
| 247 char_u propInfo[MAX_NAME_LENGTH + 20]; | |
| 248 | |
| 249 if (commProperty == None) | |
| 250 { | |
| 251 if (SendInit(dpy) < 0) | |
| 252 return -2; | |
| 253 } | |
| 254 | |
| 255 /* | |
| 256 * Make sure the name is unique, and append info about it to | |
| 257 * the registry property. It's important to lock the server | |
| 258 * here to prevent conflicting changes to the registry property. | |
| 259 * WARNING: Do not step through this while debugging, it will hangup the X | |
| 260 * server! | |
| 261 */ | |
| 262 XGrabServer(dpy); | |
| 263 w = LookupName(dpy, name, FALSE, NULL); | |
| 264 if (w != (Window)0) | |
| 265 { | |
| 266 Status status; | |
| 267 int dummyInt; | |
| 268 unsigned int dummyUns; | |
| 269 Window dummyWin; | |
| 270 | |
| 271 /* | |
| 272 * The name is currently registered. See if the commWindow | |
| 273 * associated with the name exists. If not, or if the commWindow | |
| 274 * is *our* commWindow, then just unregister the old name (this | |
| 275 * could happen if an application dies without cleaning up the | |
| 276 * registry). | |
| 277 */ | |
| 278 old_handler = XSetErrorHandler(x_error_check); | |
| 279 status = XGetGeometry(dpy, w, &dummyWin, &dummyInt, &dummyInt, | |
| 280 &dummyUns, &dummyUns, &dummyUns, &dummyUns); | |
| 281 (void)XSetErrorHandler(old_handler); | |
| 282 if (status != Success && w != commWindow) | |
| 283 { | |
| 284 XUngrabServer(dpy); | |
| 285 XFlush(dpy); | |
| 286 return -1; | |
| 287 } | |
| 288 (void)LookupName(dpy, name, /*delete=*/TRUE, NULL); | |
| 289 } | |
| 290 sprintf((char *)propInfo, "%x %.*s", (int_u)commWindow, | |
| 291 MAX_NAME_LENGTH, name); | |
| 292 old_handler = XSetErrorHandler(x_error_check); | |
| 293 got_x_error = FALSE; | |
| 294 XChangeProperty(dpy, RootWindow(dpy, 0), registryProperty, XA_STRING, 8, | |
| 295 PropModeAppend, propInfo, STRLEN(propInfo) + 1); | |
| 296 XUngrabServer(dpy); | |
| 297 XSync(dpy, False); | |
| 298 (void)XSetErrorHandler(old_handler); | |
| 299 | |
| 300 if (!got_x_error) | |
| 301 { | |
| 302 #ifdef FEAT_EVAL | |
| 303 set_vim_var_string(VV_SEND_SERVER, name, -1); | |
| 304 #endif | |
| 305 serverName = vim_strsave(name); | |
| 306 #ifdef FEAT_TITLE | |
| 307 need_maketitle = TRUE; | |
| 308 #endif | |
| 309 return 0; | |
| 310 } | |
| 311 return -2; | |
| 312 } | |
| 313 | |
| 314 #if defined(FEAT_GUI) || defined(PROTO) | |
| 315 /* | |
| 316 * Clean out new ID from registry and set it as comm win. | |
| 317 * Change any registered window ID. | |
| 318 */ | |
| 319 void | |
| 320 serverChangeRegisteredWindow(dpy, newwin) | |
| 321 Display *dpy; /* Display to register with */ | |
| 322 Window newwin; /* Re-register to this ID */ | |
| 323 { | |
| 324 char_u propInfo[MAX_NAME_LENGTH + 20]; | |
| 325 | |
| 326 commWindow = newwin; | |
| 327 | |
| 328 /* Always call SendInit() here, to make sure commWindow is marked as a Vim | |
| 329 * window. */ | |
| 330 if (SendInit(dpy) < 0) | |
| 331 return; | |
| 332 | |
| 333 /* WARNING: Do not step through this while debugging, it will hangup the X | |
| 334 * server! */ | |
| 335 XGrabServer(dpy); | |
| 336 DeleteAnyLingerer(dpy, newwin); | |
| 337 if (serverName != NULL) | |
| 338 { | |
| 339 /* Reinsert name if we was already registered */ | |
| 340 (void)LookupName(dpy, serverName, /*delete=*/TRUE, NULL); | |
| 341 sprintf((char *)propInfo, "%x %.*s", | |
| 342 (int_u)newwin, MAX_NAME_LENGTH, serverName); | |
| 343 XChangeProperty(dpy, RootWindow(dpy, 0), registryProperty, XA_STRING, 8, | |
| 344 PropModeAppend, (char_u *)propInfo, | |
| 345 STRLEN(propInfo) + 1); | |
| 346 } | |
| 347 XUngrabServer(dpy); | |
| 348 } | |
| 349 #endif | |
| 350 | |
| 351 /* | |
| 352 * Send to an instance of Vim via the X display. | |
| 353 * Returns 0 for OK, negative for an error. | |
| 354 */ | |
| 355 int | |
| 356 serverSendToVim(dpy, name, cmd, result, server, asExpr, localLoop, silent) | |
| 357 Display *dpy; /* Where to send. */ | |
| 358 char_u *name; /* Where to send. */ | |
| 359 char_u *cmd; /* What to send. */ | |
| 360 char_u **result; /* Result of eval'ed expression */ | |
| 361 Window *server; /* Actual ID of receiving app */ | |
| 362 Bool asExpr; /* Interpret as keystrokes or expr ? */ | |
| 363 Bool localLoop; /* Throw away everything but result */ | |
| 364 int silent; /* don't complain about no server */ | |
| 365 { | |
| 366 Window w; | |
| 367 char_u *property; | |
| 368 int length; | |
| 369 int res; | |
| 370 static int serial = 0; /* Running count of sent commands. | |
| 371 * Used to give each command a | |
| 372 * different serial number. */ | |
| 373 PendingCommand pending; | |
| 374 char_u *loosename = NULL; | |
| 375 | |
| 376 if (result != NULL) | |
| 377 *result = NULL; | |
| 378 if (name == NULL || *name == NUL) | |
| 379 name = (char_u *)"GVIM"; /* use a default name */ | |
| 380 | |
| 381 if (commProperty == None && dpy != NULL) | |
| 382 { | |
| 383 if (SendInit(dpy) < 0) | |
| 384 return -1; | |
| 385 } | |
| 386 | |
| 387 /* Execute locally if no display or target is ourselves */ | |
| 388 if (dpy == NULL || (serverName != NULL && STRICMP(name, serverName) == 0)) | |
| 389 { | |
| 390 if (asExpr) | |
| 391 { | |
| 392 char_u *ret; | |
| 393 | |
| 394 ret = eval_client_expr_to_string(cmd); | |
| 395 if (result != NULL) | |
| 396 { | |
| 397 if (ret == NULL) | |
| 398 *result = vim_strsave((char_u *)_(e_invexprmsg)); | |
| 399 else | |
| 400 *result = ret; | |
| 401 } | |
| 402 else | |
| 403 vim_free(ret); | |
| 404 return ret == NULL ? -1 : 0; | |
| 405 } | |
| 406 else | |
| 407 server_to_input_buf(cmd); | |
| 408 return 0; | |
| 409 } | |
| 410 | |
| 411 /* | |
| 412 * Bind the server name to a communication window. | |
| 413 * | |
| 414 * Find any survivor with a serialno attached to the name if the | |
| 415 * original registrant of the wanted name is no longer present. | |
| 416 * | |
| 417 * Delete any lingering names from dead editors. | |
| 418 */ | |
| 419 while (TRUE) | |
| 420 { | |
| 421 w = LookupName(dpy, name, FALSE, &loosename); | |
| 422 /* Check that the window is hot */ | |
| 423 if (w != None) | |
| 424 { | |
| 425 if (!WindowValid(dpy, w)) | |
| 426 { | |
| 427 LookupName(dpy, loosename ? loosename : name, | |
| 428 /*DELETE=*/TRUE, NULL); | |
| 429 continue; | |
| 430 } | |
| 431 } | |
| 432 break; | |
| 433 } | |
| 434 if (w == None) | |
| 435 { | |
| 436 if (!silent) | |
| 437 EMSG2(_(e_noserver), name); | |
| 438 return -1; | |
| 439 } | |
| 440 else if (loosename != NULL) | |
| 441 name = loosename; | |
| 442 if (server != NULL) | |
| 443 *server = w; | |
| 444 | |
| 445 /* | |
| 446 * Send the command to target interpreter by appending it to the | |
| 447 * comm window in the communication window. | |
| 448 * Length must be computed exactly! | |
| 449 */ | |
| 450 #ifdef FEAT_MBYTE | |
| 451 length = STRLEN(name) + STRLEN(p_enc) + STRLEN(cmd) + 14; | |
| 452 #else | |
| 453 length = STRLEN(name) + STRLEN(cmd) + 10; | |
| 454 #endif | |
| 455 property = (char_u *)alloc((unsigned)length + 30); | |
| 456 | |
| 457 #ifdef FEAT_MBYTE | |
| 458 sprintf((char *)property, "%c%c%c-n %s%c-E %s%c-s %s", | |
| 459 0, asExpr ? 'c' : 'k', 0, name, 0, p_enc, 0, cmd); | |
| 460 #else | |
| 461 sprintf((char *)property, "%c%c%c-n %s%c-s %s", | |
| 462 0, asExpr ? 'c' : 'k', 0, name, 0, cmd); | |
| 463 #endif | |
| 464 if (name == loosename) | |
| 465 vim_free(loosename); | |
| 466 /* Add a back reference to our comm window */ | |
| 467 serial++; | |
| 468 sprintf((char *)property + length, "%c-r %x %d", | |
| 469 0, (int_u)commWindow, serial); | |
| 470 /* Add length of what "-r %x %d" resulted in, skipping the NUL. */ | |
| 471 length += STRLEN(property + length + 1) + 1; | |
| 472 | |
| 473 res = AppendPropCarefully(dpy, w, commProperty, property, length + 1); | |
| 474 vim_free(property); | |
| 475 if (res < 0) | |
| 476 { | |
| 477 EMSG(_("E248: Failed to send command to the destination program")); | |
| 478 return -1; | |
| 479 } | |
| 480 | |
| 481 if (!asExpr) /* There is no answer for this - Keys are sent async */ | |
| 482 return 0; | |
| 483 | |
| 484 /* | |
| 485 * Register the fact that we're waiting for a command to | |
| 486 * complete (this is needed by SendEventProc and by | |
| 487 * AppendErrorProc to pass back the command's results). | |
| 488 */ | |
| 489 pending.serial = serial; | |
| 490 pending.code = 0; | |
| 491 pending.result = NULL; | |
| 492 pending.nextPtr = pendingCommands; | |
| 493 pendingCommands = &pending; | |
| 494 | |
| 495 ServerWait(dpy, w, WaitForPend, &pending, localLoop, 600); | |
| 496 | |
| 497 /* | |
| 498 * Unregister the information about the pending command | |
| 499 * and return the result. | |
| 500 */ | |
| 501 if (pendingCommands == &pending) | |
| 502 pendingCommands = pending.nextPtr; | |
| 503 else | |
| 504 { | |
| 505 PendingCommand *pcPtr; | |
| 506 | |
| 507 for (pcPtr = pendingCommands; pcPtr != NULL; pcPtr = pcPtr->nextPtr) | |
| 508 if (pcPtr->nextPtr == &pending) | |
| 509 { | |
| 510 pcPtr->nextPtr = pending.nextPtr; | |
| 511 break; | |
| 512 } | |
| 513 } | |
| 514 if (result != NULL) | |
| 515 *result = pending.result; | |
| 516 else | |
| 517 vim_free(pending.result); | |
| 518 | |
| 519 return pending.code == 0 ? 0 : -1; | |
| 520 } | |
| 521 | |
| 522 static int | |
| 523 WaitForPend(p) | |
| 524 void *p; | |
| 525 { | |
| 526 PendingCommand *pending = (PendingCommand *) p; | |
| 527 return pending->result != NULL; | |
| 528 } | |
| 529 | |
| 530 /* | |
| 531 * Return TRUE if window "w" exists and has a "Vim" property on it. | |
| 532 */ | |
| 533 static int | |
| 534 WindowValid(dpy, w) | |
| 535 Display *dpy; | |
| 536 Window w; | |
| 537 { | |
| 538 XErrorHandler old_handler; | |
| 539 Atom *plist; | |
| 540 int numProp; | |
| 541 int i; | |
| 542 | |
| 543 old_handler = XSetErrorHandler(x_error_check); | |
| 544 got_x_error = 0; | |
| 545 plist = XListProperties(dpy, w, &numProp); | |
| 546 XSync(dpy, False); | |
| 547 XSetErrorHandler(old_handler); | |
| 548 if (plist == NULL || got_x_error) | |
| 549 return FALSE; | |
| 550 | |
| 551 for (i = 0; i < numProp; i++) | |
| 552 if (plist[i] == vimProperty) | |
| 553 { | |
| 554 XFree(plist); | |
| 555 return TRUE; | |
| 556 } | |
| 557 XFree(plist); | |
| 558 return FALSE; | |
| 559 } | |
| 560 | |
| 561 /* | |
| 562 * Enter a loop processing X events & polling chars until we see a result | |
| 563 */ | |
| 564 static void | |
| 565 ServerWait(dpy, w, endCond, endData, localLoop, seconds) | |
| 566 Display *dpy; | |
| 567 Window w; | |
| 568 EndCond endCond; | |
| 569 void *endData; | |
| 570 int localLoop; | |
| 571 int seconds; | |
| 572 { | |
| 573 time_t start; | |
| 574 time_t now; | |
| 575 time_t lastChk = 0; | |
| 576 XEvent event; | |
| 577 XPropertyEvent *e = (XPropertyEvent *)&event; | |
| 578 # define SEND_MSEC_POLL 50 | |
| 579 | |
| 580 time(&start); | |
| 581 while (endCond(endData) == 0) | |
| 582 { | |
| 583 time(&now); | |
| 584 if (seconds >= 0 && (now - start) >= seconds) | |
| 585 break; | |
| 586 if (now != lastChk) | |
| 587 { | |
| 588 lastChk = now; | |
| 589 if (!WindowValid(dpy, w)) | |
| 590 break; | |
| 591 /* | |
| 592 * Sometimes the PropertyChange event doesn't come. | |
| 593 * This can be seen in eg: vim -c 'echo remote_expr("gvim", "3+2")' | |
| 594 */ | |
| 595 serverEventProc(dpy, NULL); | |
| 596 } | |
| 597 if (localLoop) | |
| 598 { | |
| 599 /* Just look out for the answer without calling back into Vim */ | |
| 600 #ifndef HAVE_SELECT | |
| 601 struct pollfd fds; | |
| 602 | |
| 603 fds.fd = ConnectionNumber(dpy); | |
| 604 fds.events = POLLIN; | |
| 605 if (poll(&fds, 1, SEND_MSEC_POLL) < 0) | |
| 606 break; | |
| 607 #else | |
| 608 fd_set fds; | |
| 609 struct timeval tv; | |
| 610 | |
| 611 tv.tv_sec = 0; | |
| 612 tv.tv_usec = SEND_MSEC_POLL * 1000; | |
| 613 FD_ZERO(&fds); | |
| 614 FD_SET(ConnectionNumber(dpy), &fds); | |
| 615 if (select(ConnectionNumber(dpy) + 1, &fds, NULL, NULL, &tv) < 0) | |
| 616 break; | |
| 617 #endif | |
| 618 while (XEventsQueued(dpy, QueuedAfterReading) > 0) | |
| 619 { | |
| 620 XNextEvent(dpy, &event); | |
| 621 if (event.type == PropertyNotify && e->window == commWindow) | |
| 622 serverEventProc(dpy, &event); | |
| 623 } | |
| 624 } | |
| 625 else | |
| 626 { | |
| 627 if (got_int) | |
| 628 break; | |
| 629 ui_delay((long)SEND_MSEC_POLL, TRUE); | |
| 630 ui_breakcheck(); | |
| 631 } | |
| 632 } | |
| 633 } | |
| 634 | |
| 635 | |
| 636 /* | |
| 637 * Fetch a list of all the Vim instance names currently registered for the | |
| 638 * display. | |
| 639 * | |
| 640 * Returns a newline separated list in allocated memory or NULL. | |
| 641 */ | |
| 642 char_u * | |
| 643 serverGetVimNames(dpy) | |
| 644 Display *dpy; | |
| 645 { | |
| 646 char_u *regProp; | |
| 647 char_u *entry; | |
| 648 char_u *p; | |
| 649 long_u numItems; | |
| 650 int_u w; | |
| 651 garray_T ga; | |
| 652 | |
| 653 if (registryProperty == None) | |
| 654 { | |
| 655 if (SendInit(dpy) < 0) | |
| 656 return NULL; | |
| 657 } | |
| 658 ga_init2(&ga, 1, 100); | |
| 659 | |
| 660 /* | |
| 661 * Read the registry property. | |
| 662 */ | |
| 663 if (GetRegProp(dpy, ®Prop, &numItems, TRUE) == FAIL) | |
| 664 return NULL; | |
| 665 | |
| 666 /* | |
| 667 * Scan all of the names out of the property. | |
| 668 */ | |
| 669 ga_init2(&ga, 1, 100); | |
| 39 | 670 for (p = regProp; (long_u)(p - regProp) < numItems; p++) |
| 0 | 671 { |
| 672 entry = p; | |
| 673 while (*p != 0 && !isspace(*p)) | |
| 674 p++; | |
| 675 if (*p != 0) | |
| 676 { | |
| 677 w = None; | |
| 678 sscanf((char *)entry, "%x", &w); | |
| 679 if (WindowValid(dpy, (Window)w)) | |
| 680 { | |
| 681 ga_concat(&ga, p + 1); | |
| 682 ga_concat(&ga, (char_u *)"\n"); | |
| 683 } | |
| 684 while (*p != 0) | |
| 685 p++; | |
| 686 } | |
| 687 } | |
| 688 if (regProp != empty_prop) | |
| 689 XFree(regProp); | |
| 690 ga_append(&ga, NUL); | |
| 691 return ga.ga_data; | |
| 692 } | |
| 693 | |
| 694 /* ---------------------------------------------------------- | |
| 695 * Reply stuff | |
| 696 */ | |
| 697 | |
| 698 static struct ServerReply * | |
| 699 ServerReplyFind(w, op) | |
| 700 Window w; | |
| 701 enum ServerReplyOp op; | |
| 702 { | |
| 703 struct ServerReply *p; | |
| 704 struct ServerReply e; | |
| 705 int i; | |
| 706 | |
| 707 p = (struct ServerReply *) serverReply.ga_data; | |
| 708 for (i = 0; i < serverReply.ga_len; i++, p++) | |
| 709 if (p->id == w) | |
| 710 break; | |
| 711 if (i >= serverReply.ga_len) | |
| 712 p = NULL; | |
| 713 | |
| 714 if (p == NULL && op == SROP_Add) | |
| 715 { | |
| 716 if (serverReply.ga_growsize == 0) | |
| 717 ga_init2(&serverReply, sizeof(struct ServerReply), 1); | |
| 718 if (ga_grow(&serverReply, 1) == OK) | |
| 719 { | |
| 720 p = ((struct ServerReply *) serverReply.ga_data) | |
| 721 + serverReply.ga_len; | |
| 722 e.id = w; | |
| 723 ga_init2(&e.strings, 1, 100); | |
| 39 | 724 mch_memmove(p, &e, sizeof(e)); |
| 0 | 725 serverReply.ga_len++; |
| 726 } | |
| 727 } | |
| 728 else if (p != NULL && op == SROP_Delete) | |
| 729 { | |
| 730 ga_clear(&p->strings); | |
| 731 mch_memmove(p, p + 1, (serverReply.ga_len - i - 1) * sizeof(*p)); | |
| 732 serverReply.ga_len--; | |
| 733 } | |
| 734 | |
| 735 return p; | |
| 736 } | |
| 737 | |
| 738 /* | |
| 739 * Convert string to windowid. | |
| 740 * Issue an error if the id is invalid. | |
| 741 */ | |
| 742 Window | |
| 743 serverStrToWin(str) | |
| 744 char_u *str; | |
| 745 { | |
| 746 unsigned id = None; | |
| 747 | |
| 748 sscanf((char *)str, "0x%x", &id); | |
| 749 if (id == None) | |
| 750 EMSG2(_("E573: Invalid server id used: %s"), str); | |
| 751 | |
| 752 return (Window)id; | |
| 753 } | |
| 754 | |
| 755 /* | |
| 756 * Send a reply string (notification) to client with id "name". | |
| 757 * Return -1 if the window is invalid. | |
| 758 */ | |
| 759 int | |
| 760 serverSendReply(name, str) | |
| 761 char_u *name; | |
| 762 char_u *str; | |
| 763 { | |
| 764 char_u *property; | |
| 765 int length; | |
| 766 int res; | |
| 767 Display *dpy = X_DISPLAY; | |
| 768 Window win = serverStrToWin(name); | |
| 769 | |
| 770 if (commProperty == None) | |
| 771 { | |
| 772 if (SendInit(dpy) < 0) | |
| 773 return -2; | |
| 774 } | |
| 775 if (!WindowValid(dpy, win)) | |
| 776 return -1; | |
| 777 | |
| 778 #ifdef FEAT_MBYTE | |
| 779 length = STRLEN(p_enc) + STRLEN(str) + 14; | |
| 780 #else | |
| 781 length = STRLEN(str) + 10; | |
| 782 #endif | |
| 783 if ((property = (char_u *)alloc((unsigned)length + 30)) != NULL) | |
| 784 { | |
| 785 #ifdef FEAT_MBYTE | |
| 786 sprintf((char *)property, "%cn%c-E %s%c-n %s%c-w %x", | |
| 787 0, 0, p_enc, 0, str, 0, (unsigned int)commWindow); | |
| 788 #else | |
| 789 sprintf((char *)property, "%cn%c-n %s%c-w %x", | |
| 790 0, 0, str, 0, (unsigned int)commWindow); | |
| 791 #endif | |
| 792 /* Add length of what "%x" resulted in. */ | |
| 793 length += STRLEN(property + length); | |
| 794 res = AppendPropCarefully(dpy, win, commProperty, property, length + 1); | |
| 795 vim_free(property); | |
| 796 return res; | |
| 797 } | |
| 798 return -1; | |
| 799 } | |
| 800 | |
| 801 static int | |
| 802 WaitForReply(p) | |
| 803 void *p; | |
| 804 { | |
| 805 Window *w = (Window *) p; | |
| 806 return ServerReplyFind(*w, SROP_Find) != NULL; | |
| 807 } | |
| 808 | |
| 809 /* | |
| 810 * Wait for replies from id (win) | |
| 811 * Return 0 and the malloc'ed string when a reply is available. | |
| 812 * Return -1 if the window becomes invalid while waiting. | |
| 813 */ | |
| 814 int | |
| 815 serverReadReply(dpy, win, str, localLoop) | |
| 816 Display *dpy; | |
| 817 Window win; | |
| 818 char_u **str; | |
| 819 int localLoop; | |
| 820 { | |
| 821 int len; | |
| 822 char_u *s; | |
| 823 struct ServerReply *p; | |
| 824 | |
| 825 ServerWait(dpy, win, WaitForReply, &win, localLoop, -1); | |
| 826 | |
| 827 if ((p = ServerReplyFind(win, SROP_Find)) != NULL && p->strings.ga_len > 0) | |
| 828 { | |
| 829 *str = vim_strsave(p->strings.ga_data); | |
| 830 len = STRLEN(*str) + 1; | |
| 831 if (len < p->strings.ga_len) | |
| 832 { | |
| 833 s = (char_u *) p->strings.ga_data; | |
| 834 mch_memmove(s, s + len, p->strings.ga_len - len); | |
| 835 p->strings.ga_len -= len; | |
| 836 } | |
| 837 else | |
| 838 { | |
| 839 /* Last string read. Remove from list */ | |
| 840 ga_clear(&p->strings); | |
| 841 ServerReplyFind(win, SROP_Delete); | |
| 842 } | |
| 843 return 0; | |
| 844 } | |
| 845 return -1; | |
| 846 } | |
| 847 | |
| 848 /* | |
| 849 * Check for replies from id (win). | |
| 850 * Return TRUE and a non-malloc'ed string if there is. Else return FALSE. | |
| 851 */ | |
| 852 int | |
| 853 serverPeekReply(dpy, win, str) | |
| 854 Display *dpy; | |
| 855 Window win; | |
| 856 char_u **str; | |
| 857 { | |
| 858 struct ServerReply *p; | |
| 859 | |
| 860 if ((p = ServerReplyFind(win, SROP_Find)) != NULL && p->strings.ga_len > 0) | |
| 861 { | |
| 862 if (str != NULL) | |
| 863 *str = p->strings.ga_data; | |
| 864 return 1; | |
| 865 } | |
| 866 if (!WindowValid(dpy, win)) | |
| 867 return -1; | |
| 868 return 0; | |
| 869 } | |
| 870 | |
| 871 | |
| 872 /* | |
| 873 * Initialize the communication channels for sending commands and receiving | |
| 874 * results. | |
| 875 */ | |
| 876 static int | |
| 877 SendInit(dpy) | |
| 878 Display *dpy; | |
| 879 { | |
| 880 XErrorHandler old_handler; | |
| 881 | |
| 882 /* | |
| 883 * Create the window used for communication, and set up an | |
| 884 * event handler for it. | |
| 885 */ | |
| 886 old_handler = XSetErrorHandler(x_error_check); | |
| 887 got_x_error = FALSE; | |
| 888 | |
| 889 if (commProperty == None) | |
| 890 commProperty = XInternAtom(dpy, "Comm", False); | |
| 891 if (vimProperty == None) | |
| 892 vimProperty = XInternAtom(dpy, "Vim", False); | |
| 893 if (registryProperty == None) | |
| 894 registryProperty = XInternAtom(dpy, "VimRegistry", False); | |
| 895 | |
| 896 if (commWindow == None) | |
| 897 { | |
| 898 commWindow = XCreateSimpleWindow(dpy, XDefaultRootWindow(dpy), | |
| 899 getpid(), 0, 10, 10, 0, | |
| 900 WhitePixel(dpy, DefaultScreen(dpy)), | |
| 901 WhitePixel(dpy, DefaultScreen(dpy))); | |
| 902 XSelectInput(dpy, commWindow, PropertyChangeMask); | |
| 903 /* WARNING: Do not step through this while debugging, it will hangup | |
| 904 * the X server! */ | |
| 905 XGrabServer(dpy); | |
| 906 DeleteAnyLingerer(dpy, commWindow); | |
| 907 XUngrabServer(dpy); | |
| 908 } | |
| 909 | |
| 910 /* Make window recognizable as a vim window */ | |
| 911 XChangeProperty(dpy, commWindow, vimProperty, XA_STRING, | |
| 912 8, PropModeReplace, (char_u *)VIM_VERSION_SHORT, | |
| 913 (int)STRLEN(VIM_VERSION_SHORT) + 1); | |
| 914 | |
| 915 XSync(dpy, False); | |
| 916 (void)XSetErrorHandler(old_handler); | |
| 917 | |
| 918 return got_x_error ? -1 : 0; | |
| 919 } | |
| 920 | |
| 921 /* | |
| 922 * Given a server name, see if the name exists in the registry for a | |
| 923 * particular display. | |
| 924 * | |
| 925 * If the given name is registered, return the ID of the window associated | |
| 926 * with the name. If the name isn't registered, then return 0. | |
| 927 * | |
| 928 * Side effects: | |
| 929 * If the registry property is improperly formed, then it is deleted. | |
| 930 * If "delete" is non-zero, then if the named server is found it is | |
| 931 * removed from the registry property. | |
| 932 */ | |
| 933 static Window | |
| 934 LookupName(dpy, name, delete, loose) | |
| 935 Display *dpy; /* Display whose registry to check. */ | |
| 936 char_u *name; /* Name of a server. */ | |
| 937 int delete; /* If non-zero, delete info about name. */ | |
| 938 char_u **loose; /* Do another search matching -999 if not found | |
| 939 Return result here if a match is found */ | |
| 940 { | |
| 941 char_u *regProp, *entry; | |
| 942 char_u *p; | |
| 943 long_u numItems; | |
| 944 int_u returnValue; | |
| 945 | |
| 946 /* | |
| 947 * Read the registry property. | |
| 948 */ | |
| 949 if (GetRegProp(dpy, ®Prop, &numItems, FALSE) == FAIL) | |
| 950 return 0; | |
| 951 | |
| 952 /* | |
| 953 * Scan the property for the desired name. | |
| 954 */ | |
| 955 returnValue = (int_u)None; | |
| 956 entry = NULL; /* Not needed, but eliminates compiler warning. */ | |
| 39 | 957 for (p = regProp; (long_u)(p - regProp) < numItems; ) |
| 0 | 958 { |
| 959 entry = p; | |
| 960 while (*p != 0 && !isspace(*p)) | |
| 961 p++; | |
| 962 if (*p != 0 && STRICMP(name, p + 1) == 0) | |
| 963 { | |
| 964 sscanf((char *)entry, "%x", &returnValue); | |
| 965 break; | |
| 966 } | |
| 967 while (*p != 0) | |
| 968 p++; | |
| 969 p++; | |
| 970 } | |
| 971 | |
| 972 if (loose != NULL && returnValue == (int_u)None && !IsSerialName(name)) | |
| 973 { | |
| 39 | 974 for (p = regProp; (long_u)(p - regProp) < numItems; ) |
| 0 | 975 { |
| 976 entry = p; | |
| 977 while (*p != 0 && !isspace(*p)) | |
| 978 p++; | |
| 979 if (*p != 0 && IsSerialName(p + 1) | |
| 980 && STRNICMP(name, p + 1, STRLEN(name)) == 0) | |
| 981 { | |
| 982 sscanf((char *)entry, "%x", &returnValue); | |
| 983 *loose = vim_strsave(p + 1); | |
| 984 break; | |
| 985 } | |
| 986 while (*p != 0) | |
| 987 p++; | |
| 988 p++; | |
| 989 } | |
| 990 } | |
| 991 | |
| 992 /* | |
| 993 * Delete the property, if that is desired (copy down the | |
| 994 * remainder of the registry property to overlay the deleted | |
| 995 * info, then rewrite the property). | |
| 996 */ | |
| 997 if (delete && returnValue != (int_u)None) | |
| 998 { | |
| 999 int count; | |
| 1000 | |
| 1001 while (*p != 0) | |
| 1002 p++; | |
| 1003 p++; | |
| 1004 count = numItems - (p - regProp); | |
| 1005 if (count > 0) | |
| 39 | 1006 mch_memmove(entry, p, count); |
| 0 | 1007 XChangeProperty(dpy, RootWindow(dpy, 0), registryProperty, XA_STRING, |
| 1008 8, PropModeReplace, regProp, | |
| 1009 (int)(numItems - (p - entry))); | |
| 1010 XSync(dpy, False); | |
| 1011 } | |
| 1012 | |
| 1013 if (regProp != empty_prop) | |
| 1014 XFree(regProp); | |
| 1015 return (Window)returnValue; | |
| 1016 } | |
| 1017 | |
| 1018 /* | |
| 1019 * Delete any lingering occurrence of window id. We promise that any | |
| 1020 * occurrence is not ours since it is not yet put into the registry (by us) | |
| 1021 * | |
| 1022 * This is necessary in the following scenario: | |
| 1023 * 1. There is an old windowid for an exit'ed vim in the registry | |
| 1024 * 2. We get that id for our commWindow but only want to send, not register. | |
| 1025 * 3. The window will mistakenly be regarded valid because of own commWindow | |
| 1026 */ | |
| 1027 static void | |
| 1028 DeleteAnyLingerer(dpy, win) | |
| 1029 Display *dpy; /* Display whose registry to check. */ | |
| 1030 Window win; /* Window to remove */ | |
| 1031 { | |
| 1032 char_u *regProp, *entry = NULL; | |
| 1033 char_u *p; | |
| 1034 long_u numItems; | |
| 1035 int_u wwin; | |
| 1036 | |
| 1037 /* | |
| 1038 * Read the registry property. | |
| 1039 */ | |
| 1040 if (GetRegProp(dpy, ®Prop, &numItems, FALSE) == FAIL) | |
| 1041 return; | |
| 1042 | |
| 1043 /* Scan the property for the window id. */ | |
| 39 | 1044 for (p = regProp; (long_u)(p - regProp) < numItems; ) |
| 0 | 1045 { |
| 1046 if (*p != 0) | |
| 1047 { | |
| 1048 sscanf((char *)p, "%x", &wwin); | |
| 1049 if ((Window)wwin == win) | |
| 1050 { | |
| 1051 int lastHalf; | |
| 1052 | |
| 1053 /* Copy down the remainder to delete entry */ | |
| 1054 entry = p; | |
| 1055 while (*p != 0) | |
| 1056 p++; | |
| 1057 p++; | |
| 1058 lastHalf = numItems - (p - regProp); | |
| 1059 if (lastHalf > 0) | |
| 39 | 1060 mch_memmove(entry, p, lastHalf); |
| 0 | 1061 numItems = (entry - regProp) + lastHalf; |
| 1062 p = entry; | |
| 1063 continue; | |
| 1064 } | |
| 1065 } | |
| 1066 while (*p != 0) | |
| 1067 p++; | |
| 1068 p++; | |
| 1069 } | |
| 1070 | |
| 1071 if (entry != NULL) | |
| 1072 { | |
| 1073 XChangeProperty(dpy, RootWindow(dpy, 0), registryProperty, | |
| 1074 XA_STRING, 8, PropModeReplace, regProp, | |
| 1075 (int)(p - regProp)); | |
| 1076 XSync(dpy, False); | |
| 1077 } | |
| 1078 | |
| 1079 if (regProp != empty_prop) | |
| 1080 XFree(regProp); | |
| 1081 } | |
| 1082 | |
| 1083 /* | |
| 1084 * Read the registry property. Delete it when it's formatted wrong. | |
| 1085 * Return the property in "regPropp". "empty_prop" is used when it doesn't | |
| 1086 * exist yet. | |
| 1087 * Return OK when successful. | |
| 1088 */ | |
| 1089 static int | |
| 1090 GetRegProp(dpy, regPropp, numItemsp, domsg) | |
| 1091 Display *dpy; | |
| 1092 char_u **regPropp; | |
| 1093 long_u *numItemsp; | |
| 1094 int domsg; /* When TRUE give error message. */ | |
| 1095 { | |
| 1096 int result, actualFormat; | |
| 1097 long_u bytesAfter; | |
| 1098 Atom actualType; | |
| 1099 XErrorHandler old_handler; | |
| 1100 | |
| 1101 *regPropp = NULL; | |
| 1102 old_handler = XSetErrorHandler(x_error_check); | |
| 1103 got_x_error = FALSE; | |
| 1104 | |
| 1105 result = XGetWindowProperty(dpy, RootWindow(dpy, 0), registryProperty, 0L, | |
| 1106 (long)MAX_PROP_WORDS, False, | |
| 1107 XA_STRING, &actualType, | |
| 1108 &actualFormat, numItemsp, &bytesAfter, | |
| 1109 regPropp); | |
| 1110 | |
| 1111 XSync(dpy, FALSE); | |
| 1112 (void)XSetErrorHandler(old_handler); | |
| 1113 if (got_x_error) | |
| 1114 return FAIL; | |
| 1115 | |
| 1116 if (actualType == None) | |
| 1117 { | |
| 1118 /* No prop yet. Logically equal to the empty list */ | |
| 1119 *numItemsp = 0; | |
| 1120 *regPropp = empty_prop; | |
| 1121 return OK; | |
| 1122 } | |
| 1123 | |
| 1124 /* If the property is improperly formed, then delete it. */ | |
| 1125 if (result != Success || actualFormat != 8 || actualType != XA_STRING) | |
| 1126 { | |
| 1127 if (*regPropp != NULL) | |
| 1128 XFree(*regPropp); | |
| 1129 XDeleteProperty(dpy, RootWindow(dpy, 0), registryProperty); | |
| 1130 if (domsg) | |
| 1131 EMSG(_("E251: VIM instance registry property is badly formed. Deleted!")); | |
| 1132 return FAIL; | |
| 1133 } | |
| 1134 return OK; | |
| 1135 } | |
| 1136 | |
| 1137 /* | |
| 1138 * This procedure is invoked by the various X event loops throughout Vims when | |
| 1139 * a property changes on the communication window. This procedure reads the | |
| 1140 * property and handles command requests and responses. | |
| 1141 */ | |
| 1142 void | |
| 1143 serverEventProc(dpy, eventPtr) | |
| 1144 Display *dpy; | |
| 1145 XEvent *eventPtr; /* Information about event. */ | |
| 1146 { | |
| 1147 char_u *propInfo; | |
| 1148 char_u *p; | |
| 1149 int result, actualFormat, code; | |
| 1150 long_u numItems, bytesAfter; | |
| 1151 Atom actualType; | |
| 1152 char_u *tofree; | |
| 1153 | |
| 1154 if (eventPtr != NULL) | |
| 1155 { | |
| 1156 if (eventPtr->xproperty.atom != commProperty | |
| 1157 || eventPtr->xproperty.state != PropertyNewValue) | |
| 1158 return; | |
| 1159 } | |
| 1160 | |
| 1161 /* | |
| 1162 * Read the comm property and delete it. | |
| 1163 */ | |
| 1164 propInfo = NULL; | |
| 1165 result = XGetWindowProperty(dpy, commWindow, commProperty, 0L, | |
| 1166 (long)MAX_PROP_WORDS, True, | |
| 1167 XA_STRING, &actualType, | |
| 1168 &actualFormat, &numItems, &bytesAfter, | |
| 1169 &propInfo); | |
| 1170 | |
| 1171 /* If the property doesn't exist or is improperly formed then ignore it. */ | |
| 1172 if (result != Success || actualType != XA_STRING || actualFormat != 8) | |
| 1173 { | |
| 1174 if (propInfo != NULL) | |
| 1175 XFree(propInfo); | |
| 1176 return; | |
| 1177 } | |
| 1178 | |
| 1179 /* | |
| 1180 * Several commands and results could arrive in the property at | |
| 1181 * one time; each iteration through the outer loop handles a | |
| 1182 * single command or result. | |
| 1183 */ | |
| 39 | 1184 for (p = propInfo; (long_u)(p - propInfo) < numItems; ) |
| 0 | 1185 { |
| 1186 /* | |
| 1187 * Ignore leading NULs; each command or result starts with a | |
| 1188 * NUL so that no matter how badly formed a preceding command | |
| 1189 * is, we'll be able to tell that a new command/result is | |
| 1190 * starting. | |
| 1191 */ | |
| 1192 if (*p == 0) | |
| 1193 { | |
| 1194 p++; | |
| 1195 continue; | |
| 1196 } | |
| 1197 | |
| 1198 if ((*p == 'c' || *p == 'k') && (p[1] == 0)) | |
| 1199 { | |
| 1200 Window resWindow; | |
| 1201 char_u *name, *script, *serial, *end, *res; | |
| 1202 Bool asKeys = *p == 'k'; | |
| 1203 garray_T reply; | |
| 1204 char_u *enc; | |
| 1205 | |
| 1206 /* | |
| 1207 * This is an incoming command from some other application. | |
| 1208 * Iterate over all of its options. Stop when we reach | |
| 1209 * the end of the property or something that doesn't look | |
| 1210 * like an option. | |
| 1211 */ | |
| 1212 p += 2; | |
| 1213 name = NULL; | |
| 1214 resWindow = None; | |
| 1215 serial = (char_u *)""; | |
| 1216 script = NULL; | |
| 1217 enc = NULL; | |
| 39 | 1218 while ((long_u)(p - propInfo) < numItems && *p == '-') |
| 0 | 1219 { |
| 1220 switch (p[1]) | |
| 1221 { | |
| 1222 case 'r': | |
| 1223 end = skipwhite(p + 2); | |
| 1224 resWindow = 0; | |
| 1225 while (vim_isxdigit(*end)) | |
| 1226 { | |
| 1227 resWindow = 16 * resWindow + (long_u)hex2nr(*end); | |
| 1228 ++end; | |
| 1229 } | |
| 1230 if (end == p + 2 || *end != ' ') | |
| 1231 resWindow = None; | |
| 1232 else | |
| 1233 { | |
| 1234 p = serial = end + 1; | |
| 1235 clientWindow = resWindow; /* Remember in global */ | |
| 1236 } | |
| 1237 break; | |
| 1238 case 'n': | |
| 1239 if (p[2] == ' ') | |
| 1240 name = p + 3; | |
| 1241 break; | |
| 1242 case 's': | |
| 1243 if (p[2] == ' ') | |
| 1244 script = p + 3; | |
| 1245 break; | |
| 1246 case 'E': | |
| 1247 if (p[2] == ' ') | |
| 1248 enc = p + 3; | |
| 1249 break; | |
| 1250 } | |
| 1251 while (*p != 0) | |
| 1252 p++; | |
| 1253 p++; | |
| 1254 } | |
| 1255 | |
| 1256 if (script == NULL || name == NULL) | |
| 1257 continue; | |
| 1258 | |
| 1259 /* | |
| 1260 * Initialize the result property, so that we're ready at any | |
| 1261 * time if we need to return an error. | |
| 1262 */ | |
| 1263 if (resWindow != None) | |
| 1264 { | |
| 1265 ga_init2(&reply, 1, 100); | |
| 1266 #ifdef FEAT_MBYTE | |
| 1267 ga_grow(&reply, 50 + STRLEN(p_enc)); | |
| 1268 sprintf(reply.ga_data, "%cr%c-E %s%c-s %s%c-r ", | |
| 1269 0, 0, p_enc, 0, serial, 0); | |
| 1270 reply.ga_len = 14 + STRLEN(p_enc) + STRLEN(serial); | |
| 1271 #else | |
| 1272 ga_grow(&reply, 50); | |
| 1273 sprintf(reply.ga_data, "%cr%c-s %s%c-r ", 0, 0, serial, 0); | |
| 1274 reply.ga_len = 10 + STRLEN(serial); | |
| 1275 #endif | |
| 1276 } | |
| 1277 res = NULL; | |
| 1278 if (serverName != NULL && STRICMP(name, serverName) == 0) | |
| 1279 { | |
| 1280 script = serverConvert(enc, script, &tofree); | |
| 1281 if (asKeys) | |
| 1282 server_to_input_buf(script); | |
| 1283 else | |
| 1284 res = eval_client_expr_to_string(script); | |
| 1285 vim_free(tofree); | |
| 1286 } | |
| 1287 if (resWindow != None) | |
| 1288 { | |
| 1289 if (res != NULL) | |
| 1290 ga_concat(&reply, res); | |
| 1291 else if (asKeys == 0) | |
| 1292 { | |
| 1293 ga_concat(&reply, (char_u *)_(e_invexprmsg)); | |
| 1294 ga_append(&reply, 0); | |
| 1295 ga_concat(&reply, (char_u *)"-c 1"); | |
| 1296 } | |
| 1297 ga_append(&reply, NUL); | |
| 1298 (void)AppendPropCarefully(dpy, resWindow, commProperty, | |
| 1299 reply.ga_data, reply.ga_len); | |
| 1300 ga_clear(&reply); | |
| 1301 } | |
| 1302 vim_free(res); | |
| 1303 } | |
| 1304 else if (*p == 'r' && p[1] == 0) | |
| 1305 { | |
| 1306 int serial, gotSerial; | |
| 1307 char_u *res; | |
| 1308 PendingCommand *pcPtr; | |
| 1309 char_u *enc; | |
| 1310 | |
| 1311 /* | |
| 1312 * This is a reply to some command that we sent out. Iterate | |
| 1313 * over all of its options. Stop when we reach the end of the | |
| 1314 * property or something that doesn't look like an option. | |
| 1315 */ | |
| 1316 p += 2; | |
| 1317 gotSerial = 0; | |
| 1318 res = (char_u *)""; | |
| 1319 code = 0; | |
| 1320 enc = NULL; | |
| 39 | 1321 while ((long_u)(p - propInfo) < numItems && *p == '-') |
| 0 | 1322 { |
| 1323 switch (p[1]) | |
| 1324 { | |
| 1325 case 'r': | |
| 1326 if (p[2] == ' ') | |
| 1327 res = p + 3; | |
| 1328 break; | |
| 1329 case 'E': | |
| 1330 if (p[2] == ' ') | |
| 1331 enc = p + 3; | |
| 1332 break; | |
| 1333 case 's': | |
| 1334 if (sscanf((char *)p + 2, " %d", &serial) == 1) | |
| 1335 gotSerial = 1; | |
| 1336 break; | |
| 1337 case 'c': | |
| 1338 if (sscanf((char *)p + 2, " %d", &code) != 1) | |
| 1339 code = 0; | |
| 1340 break; | |
| 1341 } | |
| 1342 while (*p != 0) | |
| 1343 p++; | |
| 1344 p++; | |
| 1345 } | |
| 1346 | |
| 1347 if (!gotSerial) | |
| 1348 continue; | |
| 1349 | |
| 1350 /* | |
| 1351 * Give the result information to anyone who's | |
| 1352 * waiting for it. | |
| 1353 */ | |
| 1354 for (pcPtr = pendingCommands; pcPtr != NULL; pcPtr = pcPtr->nextPtr) | |
| 1355 { | |
| 1356 if (serial != pcPtr->serial || pcPtr->result != NULL) | |
| 1357 continue; | |
| 1358 | |
| 1359 pcPtr->code = code; | |
| 1360 if (res != NULL) | |
| 1361 { | |
| 1362 res = serverConvert(enc, res, &tofree); | |
| 1363 if (tofree == NULL) | |
| 1364 res = vim_strsave(res); | |
| 1365 pcPtr->result = res; | |
| 1366 } | |
| 1367 else | |
| 1368 pcPtr->result = vim_strsave((char_u *)""); | |
| 1369 break; | |
| 1370 } | |
| 1371 } | |
| 1372 else if (*p == 'n' && p[1] == 0) | |
| 1373 { | |
| 1374 Window win = 0; | |
| 1375 unsigned int u; | |
| 1376 int gotWindow; | |
| 1377 char_u *str; | |
| 1378 struct ServerReply *r; | |
| 1379 char_u *enc; | |
| 1380 | |
| 1381 /* | |
| 1382 * This is a (n)otification. Sent with serverreply_send in VimL. | |
| 1383 * Execute any autocommand and save it for later retrieval | |
| 1384 */ | |
| 1385 p += 2; | |
| 1386 gotWindow = 0; | |
| 1387 str = (char_u *)""; | |
| 1388 enc = NULL; | |
| 39 | 1389 while ((long_u)(p - propInfo) < numItems && *p == '-') |
| 0 | 1390 { |
| 1391 switch (p[1]) | |
| 1392 { | |
| 1393 case 'n': | |
| 1394 if (p[2] == ' ') | |
| 1395 str = p + 3; | |
| 1396 break; | |
| 1397 case 'E': | |
| 1398 if (p[2] == ' ') | |
| 1399 enc = p + 3; | |
| 1400 break; | |
| 1401 case 'w': | |
| 1402 if (sscanf((char *)p + 2, " %x", &u) == 1) | |
| 1403 { | |
| 1404 win = u; | |
| 1405 gotWindow = 1; | |
| 1406 } | |
| 1407 break; | |
| 1408 } | |
| 1409 while (*p != 0) | |
| 1410 p++; | |
| 1411 p++; | |
| 1412 } | |
| 1413 | |
| 1414 if (!gotWindow) | |
| 1415 continue; | |
| 1416 str = serverConvert(enc, str, &tofree); | |
| 1417 if ((r = ServerReplyFind(win, SROP_Add)) != NULL) | |
| 1418 { | |
| 1419 ga_concat(&(r->strings), str); | |
| 1420 ga_append(&(r->strings), NUL); | |
| 1421 } | |
| 1422 #ifdef FEAT_AUTOCMD | |
|
34
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Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1423 { |
|
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parents:
0
diff
changeset
|
1424 char_u winstr[30]; |
|
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before ack base protocol.
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1425 |
|
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before ack base protocol.
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
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diff
changeset
|
1426 sprintf((char *)winstr, "0x%x", (unsigned int)win); |
|
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Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1427 apply_autocmds(EVENT_REMOTEREPLY, winstr, str, TRUE, curbuf); |
|
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parents:
0
diff
changeset
|
1428 } |
| 0 | 1429 #endif |
| 1430 vim_free(tofree); | |
| 1431 } | |
| 1432 else | |
| 1433 { | |
| 1434 /* | |
| 1435 * Didn't recognize this thing. Just skip through the next | |
| 1436 * null character and try again. | |
| 1437 * Even if we get an 'r'(eply) we will throw it away as we | |
| 1438 * never specify (and thus expect) one | |
| 1439 */ | |
| 1440 while (*p != 0) | |
| 1441 p++; | |
| 1442 p++; | |
| 1443 } | |
| 1444 } | |
| 1445 XFree(propInfo); | |
| 1446 } | |
| 1447 | |
| 1448 /* | |
| 1449 * Append a given property to a given window, but set up an X error handler so | |
| 1450 * that if the append fails this procedure can return an error code rather | |
| 1451 * than having Xlib panic. | |
| 1452 * Return: 0 for OK, -1 for error | |
| 1453 */ | |
| 1454 static int | |
| 1455 AppendPropCarefully(dpy, window, property, value, length) | |
| 1456 Display *dpy; /* Display on which to operate. */ | |
| 1457 Window window; /* Window whose property is to be modified. */ | |
| 1458 Atom property; /* Name of property. */ | |
| 1459 char_u *value; /* Characters to append to property. */ | |
| 1460 int length; /* How much to append */ | |
| 1461 { | |
| 1462 XErrorHandler old_handler; | |
| 1463 | |
| 1464 old_handler = XSetErrorHandler(x_error_check); | |
| 1465 got_x_error = FALSE; | |
| 1466 XChangeProperty(dpy, window, property, XA_STRING, 8, | |
| 1467 PropModeAppend, value, length); | |
| 1468 XSync(dpy, False); | |
| 1469 (void) XSetErrorHandler(old_handler); | |
| 1470 return got_x_error ? -1 : 0; | |
| 1471 } | |
| 1472 | |
| 1473 | |
| 1474 /* | |
| 1475 * Another X Error handler, just used to check for errors. | |
| 1476 */ | |
| 1477 static int | |
| 1478 x_error_check(dpy, error_event) | |
| 39 | 1479 Display *dpy UNUSED; |
| 1480 XErrorEvent *error_event UNUSED; | |
| 0 | 1481 { |
| 1482 got_x_error = TRUE; | |
| 1483 return 0; | |
| 1484 } | |
| 1485 | |
| 1486 /* | |
| 1487 * Check if "str" looks like it had a serial number appended. | |
| 1488 * Actually just checks if the name ends in a digit. | |
| 1489 */ | |
| 1490 static int | |
| 1491 IsSerialName(str) | |
| 1492 char_u *str; | |
| 1493 { | |
| 1494 int len = STRLEN(str); | |
| 1495 | |
| 1496 return (len > 1 && vim_isdigit(str[len - 1])); | |
| 1497 } | |
| 1498 #endif /* FEAT_CLIENTSERVER */ |