Mercurial > hg > xemacs-beta
annotate lib-src/winclient.c @ 5926:da02ba75e50a cygwin
merge heads 3
| author | Henry Thompson <ht@markup.co.uk> |
|---|---|
| date | Fri, 27 Feb 2015 17:48:44 +0000 |
| parents | 68639fb08af8 |
| children |
| rev | line source |
|---|---|
| 853 | 1 /* DDE client for XEmacs. |
| 2 Copyright (C) 2002 Alastair J. Houghton | |
| 3 | |
| 4 This file is part of XEmacs. | |
| 5 | |
|
5402
308d34e9f07d
Changed bulk of GPLv2 or later files identified by script
Mats Lidell <matsl@xemacs.org>
parents:
5030
diff
changeset
|
6 XEmacs is free software: you can redistribute it and/or modify it |
|
308d34e9f07d
Changed bulk of GPLv2 or later files identified by script
Mats Lidell <matsl@xemacs.org>
parents:
5030
diff
changeset
|
7 under the terms of the GNU General Public License as published by the |
|
308d34e9f07d
Changed bulk of GPLv2 or later files identified by script
Mats Lidell <matsl@xemacs.org>
parents:
5030
diff
changeset
|
8 Free Software Foundation, either version 3 of the License, or (at your |
|
308d34e9f07d
Changed bulk of GPLv2 or later files identified by script
Mats Lidell <matsl@xemacs.org>
parents:
5030
diff
changeset
|
9 option) any later version. |
| 853 | 10 |
|
5402
308d34e9f07d
Changed bulk of GPLv2 or later files identified by script
Mats Lidell <matsl@xemacs.org>
parents:
5030
diff
changeset
|
11 XEmacs is distributed in the hope that it will be useful, but WITHOUT |
|
308d34e9f07d
Changed bulk of GPLv2 or later files identified by script
Mats Lidell <matsl@xemacs.org>
parents:
5030
diff
changeset
|
12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
|
308d34e9f07d
Changed bulk of GPLv2 or later files identified by script
Mats Lidell <matsl@xemacs.org>
parents:
5030
diff
changeset
|
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
|
308d34e9f07d
Changed bulk of GPLv2 or later files identified by script
Mats Lidell <matsl@xemacs.org>
parents:
5030
diff
changeset
|
14 for more details. |
| 853 | 15 |
|
5402
308d34e9f07d
Changed bulk of GPLv2 or later files identified by script
Mats Lidell <matsl@xemacs.org>
parents:
5030
diff
changeset
|
16 You should have received a copy of the GNU General Public License |
|
308d34e9f07d
Changed bulk of GPLv2 or later files identified by script
Mats Lidell <matsl@xemacs.org>
parents:
5030
diff
changeset
|
17 along with XEmacs. If not, see <http://www.gnu.org/licenses/>. */ |
| 853 | 18 |
| 19 /* Synched up with: Not in FSF. */ | |
| 20 | |
| 21 /* -- Includes -------------------------------------------------------------- */ | |
| 22 | |
| 23 #ifdef HAVE_CONFIG_H | |
| 24 # include <config.h> | |
| 25 #endif | |
| 2993 | 26 #include <windows.h> |
| 27 #include <ddeml.h> | |
| 853 | 28 #include <stdlib.h> |
| 29 #include <stdio.h> | |
| 30 #include <ctype.h> | |
| 31 #include <errno.h> | |
| 32 | |
| 5030 | 33 #ifdef __CYGWIN__ |
| 34 #include <stdlib.h> | |
| 35 #include <unistd.h> | |
| 36 #endif | |
| 37 | |
| 853 | 38 static void error (const char* s1, const char* s2); |
| 39 static void fatal (const char *s1, const char *s2); | |
| 40 static void * xmalloc (size_t size); | |
| 41 static char * getNextArg (const char **ptr, unsigned *len); | |
| 42 | |
| 43 /* -- Post-Include Defines -------------------------------------------------- */ | |
| 44 | |
| 45 /* Timeouts & delays */ | |
| 5030 | 46 #define CONNECT_RETRIES 20 |
| 853 | 47 #define CONNECT_DELAY 500 /* ms */ |
| 48 #define TRANSACTION_TIMEOUT 5000 /* ms */ | |
| 49 #define MAX_INPUT_IDLE_WAIT INFINITE /* ms */ | |
| 50 | |
| 51 /* DDE Strings */ | |
| 52 #define SERVICE_NAME "XEmacs" | |
| 53 #define TOPIC_NAME "System" | |
| 54 #define COMMAND_FORMAT "[open(\"%s%s\")]" | |
| 55 | |
| 56 /* XEmacs program name */ | |
| 5030 | 57 #define GENERIC_PROGRAM EMACS_PROGNAME ".exe" |
| 58 #define VERSIONED_PROGRAM EMACS_PROGNAME "-" EMACS_VERSION ".exe" | |
| 853 | 59 |
| 60 /* -- Constants ------------------------------------------------------------- */ | |
| 61 | |
| 62 /* -- Global Variables ------------------------------------------------------ */ | |
| 63 | |
| 64 HINSTANCE hInstance; | |
| 65 DWORD idInst = 0; | |
| 66 | |
| 67 /* -- Function Declarations ------------------------------------------------- */ | |
| 68 | |
| 69 HDDEDATA CALLBACK ddeCallback (UINT uType, UINT uFmt, HCONV hconv, | |
| 70 HSZ hsz1, HSZ hsz2, HDDEDATA hdata, | |
| 71 DWORD dwData1, DWORD dwData2); | |
| 72 | |
| 73 int WINAPI WinMain (HINSTANCE hInst, | |
| 74 HINSTANCE hPrev, | |
| 75 LPSTR lpCmdLine, | |
| 76 int nCmdShow); | |
| 77 | |
| 78 static HCONV openConversation (void); | |
| 79 static void closeConversation (HCONV hConv); | |
| 80 static int doFile (HCONV hConv, LPSTR lpszFileName1, LPSTR lpszFileName2); | |
| 81 static int parseCommandLine (HCONV hConv, LPSTR lpszCommandLine); | |
| 82 | |
| 83 /* -- Function Definitions -------------------------------------------------- */ | |
| 84 | |
| 85 /* | |
| 86 * Name : ddeCallback | |
| 87 * Function: Gets called by DDEML. | |
| 88 * | |
| 89 */ | |
| 90 | |
| 91 HDDEDATA CALLBACK | |
| 92 ddeCallback (UINT uType, UINT uFmt, HCONV hconv, | |
| 93 HSZ hsz1, HSZ hsz2, HDDEDATA hdata, | |
| 94 DWORD dwData1, DWORD dwData2) | |
| 95 { | |
| 96 return (HDDEDATA) NULL; | |
| 97 } | |
| 98 | |
| 99 /* | |
| 100 * Name : WinMain | |
| 101 * Function: The program's entry point function. | |
| 102 * | |
| 103 */ | |
| 104 | |
| 105 int WINAPI | |
| 106 WinMain (HINSTANCE hInst, | |
| 107 HINSTANCE hPrev, | |
| 108 LPSTR lpCmdLine, | |
| 109 int nCmdShow) | |
| 110 { | |
| 111 HCONV hConv; | |
| 112 int ret = 0; | |
| 113 UINT uiRet; | |
| 5030 | 114 |
| 853 | 115 /* Initialise the DDEML library */ |
| 116 uiRet = DdeInitialize (&idInst, | |
| 117 (PFNCALLBACK) ddeCallback, | |
| 118 APPCMD_CLIENTONLY | |
| 119 |CBF_FAIL_ALLSVRXACTIONS, | |
| 120 0); | |
| 121 | |
| 122 if (uiRet != DMLERR_NO_ERROR) | |
| 123 { | |
| 124 MessageBox (NULL, "Could not initialise DDE management library.", | |
| 125 "winclient", MB_ICONEXCLAMATION | MB_OK); | |
| 126 | |
| 127 return 1; | |
| 128 } | |
| 129 | |
| 130 /* Open a conversation */ | |
| 131 hConv = openConversation (); | |
| 132 | |
| 133 if (hConv) | |
| 134 { | |
| 135 /* OK. Next, we need to parse the command line. */ | |
| 136 ret = parseCommandLine (hConv, lpCmdLine); | |
| 137 | |
| 138 /* Close the conversation */ | |
| 139 closeConversation (hConv); | |
| 140 } | |
| 5030 | 141 |
| 853 | 142 DdeUninitialize (idInst); |
| 143 | |
| 144 return ret; | |
| 145 } | |
| 146 | |
| 147 /* | |
| 148 * Name : openConversation | |
| 149 * Function: Start a conversation. | |
| 150 * | |
| 151 */ | |
| 152 | |
| 153 static HCONV | |
| 154 openConversation (void) | |
| 155 { | |
| 156 HSZ hszService = NULL, hszTopic = NULL; | |
| 157 HCONV hConv = NULL; | |
| 158 | |
| 159 /* Get the application (service) name */ | |
| 160 hszService = DdeCreateStringHandle (idInst, | |
| 161 SERVICE_NAME, | |
| 162 CP_WINANSI); | |
| 163 | |
| 164 if (!hszService) | |
| 165 { | |
| 166 MessageBox (NULL, "Could not create string handle for service.", | |
| 167 "winclient", MB_ICONEXCLAMATION | MB_OK); | |
| 168 | |
| 169 goto error; | |
| 170 } | |
| 5030 | 171 |
| 853 | 172 /* Get the topic name */ |
| 173 hszTopic = DdeCreateStringHandle (idInst, | |
| 174 TOPIC_NAME, | |
| 175 CP_WINANSI); | |
| 176 | |
| 177 if (!hszTopic) | |
| 178 { | |
| 179 MessageBox (NULL, "Could not create string handle for topic.", | |
| 180 "winclient", MB_ICONEXCLAMATION | MB_OK); | |
| 181 | |
| 182 goto error; | |
| 183 } | |
| 184 | |
| 185 /* Try to connect */ | |
| 186 hConv = DdeConnect (idInst, hszService, hszTopic, NULL); | |
| 187 | |
| 188 if (!hConv) | |
| 189 { | |
| 190 STARTUPINFO sti; | |
| 191 PROCESS_INFORMATION pi; | |
| 192 int n; | |
| 5030 | 193 |
| 853 | 194 /* Try to start the program */ |
| 195 ZeroMemory (&sti, sizeof (sti)); | |
| 196 sti.cb = sizeof (sti); | |
| 5030 | 197 if (!CreateProcess (NULL, GENERIC_PROGRAM, NULL, NULL, FALSE, 0, |
| 198 NULL, NULL, &sti, &pi) && | |
| 199 !CreateProcess (NULL, VERSIONED_PROGRAM, NULL, NULL, FALSE, 0, | |
| 853 | 200 NULL, NULL, &sti, &pi)) |
| 201 { | |
| 202 MessageBox (NULL, "Could not start process.", | |
| 203 "winclient", MB_ICONEXCLAMATION | MB_OK); | |
| 204 | |
| 205 goto error; | |
| 206 } | |
| 207 | |
| 208 /* Wait for the process to enter an idle state */ | |
| 209 WaitForInputIdle (pi.hProcess, MAX_INPUT_IDLE_WAIT); | |
| 210 | |
| 211 /* Close the handles */ | |
| 212 CloseHandle (pi.hThread); | |
| 213 CloseHandle (pi.hProcess); | |
| 5030 | 214 |
| 853 | 215 /* Try to connect */ |
|
4464
61aff09a7589
Increase DDE connection retries because waiting for XEmacs to start
Vin Shelton <acs@xemacs.org>
parents:
2993
diff
changeset
|
216 for (n = 0; n < CONNECT_RETRIES; n++) |
| 853 | 217 { |
| 218 Sleep (CONNECT_DELAY); | |
| 5030 | 219 |
| 853 | 220 hConv = DdeConnect (idInst, hszService, hszTopic, NULL); |
| 221 | |
| 222 if (hConv) | |
| 223 break; | |
| 224 } | |
| 225 | |
| 226 if (!hConv) | |
| 227 { | |
| 228 /* Still couldn't connect. */ | |
| 229 MessageBox (NULL, "Could not connect to DDE server.", | |
| 230 "winclient", MB_ICONEXCLAMATION | MB_OK); | |
| 231 | |
| 232 goto error; | |
| 233 } | |
| 234 } | |
| 235 | |
| 236 /* Release the string handles */ | |
| 237 DdeFreeStringHandle (idInst, hszService); | |
| 238 DdeFreeStringHandle (idInst, hszTopic); | |
| 239 | |
| 240 return hConv; | |
| 5030 | 241 |
| 853 | 242 error: |
| 243 if (hConv) | |
| 244 DdeDisconnect (hConv); | |
| 245 if (hszService) | |
| 246 DdeFreeStringHandle (idInst, hszService); | |
| 247 if (hszTopic) | |
| 248 DdeFreeStringHandle (idInst, hszTopic); | |
| 249 | |
| 250 return NULL; | |
| 251 } | |
| 252 | |
| 253 /* | |
| 254 * Name : closeConversation | |
| 255 * Function: Close a conversation. | |
| 256 * | |
| 257 */ | |
| 258 | |
| 259 static void | |
| 260 closeConversation (HCONV hConv) | |
| 261 { | |
| 262 /* Shut down */ | |
| 263 DdeDisconnect (hConv); | |
| 264 } | |
| 265 | |
| 266 /* | |
| 267 * Name : doFile | |
| 268 * Function: Process a file. | |
| 269 * | |
| 270 */ | |
| 271 | |
| 272 int | |
| 273 doFile (HCONV hConv, LPSTR lpszFileName1, LPSTR lpszFileName2) | |
| 274 { | |
| 275 char *buf = NULL; | |
| 276 unsigned len; | |
| 5030 | 277 |
| 853 | 278 /* Calculate the buffer length */ |
| 279 len = strlen (lpszFileName1) + strlen (lpszFileName2) | |
| 280 + strlen (COMMAND_FORMAT); | |
| 5030 | 281 |
| 853 | 282 /* Allocate a buffer */ |
| 283 buf = (char *) xmalloc (len); | |
| 284 | |
| 285 if (!buf) | |
| 286 { | |
| 287 MessageBox (NULL, "Not enough memory.", | |
| 288 "winclient", MB_ICONEXCLAMATION | MB_OK); | |
| 289 | |
| 290 return 1; | |
| 291 } | |
| 292 | |
| 293 /* Build the command */ | |
| 294 len = wsprintf (buf, COMMAND_FORMAT, lpszFileName1, lpszFileName2); | |
| 5030 | 295 len++; |
| 853 | 296 |
| 297 /* OK. We're connected. Send the message. */ | |
|
5921
68639fb08af8
no obvious 64 vs. 32 pblms in compilation, but still crashing in event-msw
Henry Thompson <ht@markup.co.uk>
parents:
5402
diff
changeset
|
298 DdeClientTransaction ((LPBYTE)buf, len, hConv, NULL, |
| 853 | 299 0, XTYP_EXECUTE, TRANSACTION_TIMEOUT, NULL); |
| 300 | |
| 301 free (buf); | |
| 5030 | 302 |
| 853 | 303 return 0; |
| 304 } | |
| 305 | |
| 306 /* | |
| 307 * Name : getNextArg | |
| 308 * Function: Retrieve the next command line argument. | |
| 309 * | |
| 310 */ | |
| 311 | |
| 312 static char * | |
| 313 getNextArg (const char **ptr, unsigned *len) | |
| 314 { | |
| 315 int in_quotes = 0, quit = 0, all_in_quotes = 0; | |
| 316 const char *p = *ptr, *start; | |
| 317 char *buf = NULL; | |
| 318 unsigned length = 0; | |
| 319 | |
| 320 /* Skip whitespace */ | |
| 321 while (*p && isspace (*p)) | |
| 322 p++; | |
| 323 | |
| 324 /* If this is the end, return NULL */ | |
| 325 if (!*p) | |
| 326 return NULL; | |
| 5030 | 327 |
| 853 | 328 /* Remember where we are */ |
| 329 start = p; | |
| 5030 | 330 |
| 853 | 331 /* Find the next whitespace character outside quotes */ |
| 332 if (*p == '"') | |
| 333 all_in_quotes = 1; | |
| 5030 | 334 |
| 853 | 335 while (*p && !quit) |
| 336 { | |
| 337 switch (*p) | |
| 338 { | |
| 339 case '"': | |
| 340 in_quotes = 1 - in_quotes; | |
| 341 p++; | |
| 342 break; | |
| 343 | |
| 344 case '\\': | |
| 345 if (!in_quotes) | |
| 346 all_in_quotes = 0; | |
| 5030 | 347 |
| 853 | 348 p++; |
| 349 | |
| 350 if (!*p) | |
| 351 break; | |
| 352 | |
| 353 p++; | |
| 354 break; | |
| 355 | |
| 356 default: | |
| 357 if (isspace (*p) && !in_quotes) | |
| 358 quit = 1; | |
| 359 else if (!in_quotes) | |
| 360 all_in_quotes = 0; | |
| 361 | |
| 362 if (!quit) | |
| 363 p++; | |
| 364 } | |
| 365 } | |
| 366 | |
| 367 /* Work out the length */ | |
| 368 length = p - start; | |
| 369 | |
| 370 /* Strip quotes if the argument is completely quoted */ | |
| 371 if (all_in_quotes) | |
| 372 { | |
| 373 start++; | |
| 374 length -= 2; | |
| 375 } | |
| 5030 | 376 |
| 853 | 377 /* Copy */ |
| 378 buf = (char *) xmalloc (length + 1); | |
| 379 | |
| 380 if (!buf) | |
| 381 return NULL; | |
| 5030 | 382 |
| 853 | 383 strncpy (buf, start, length); |
| 384 buf[length] = '\0'; | |
| 385 | |
| 386 /* Return the pointer and length */ | |
| 387 *ptr = p; | |
| 388 *len = length; | |
| 389 | |
| 390 return buf; | |
| 391 } | |
| 392 | |
| 393 /* | |
| 394 * Name : parseCommandLine | |
| 395 * Function: Process the command line. This program accepts a list of strings | |
| 396 * : (which may contain wildcards) representing filenames. | |
| 397 * | |
| 398 */ | |
| 399 | |
| 400 int | |
| 401 parseCommandLine (HCONV hConv, LPSTR lpszCommandLine) | |
| 402 { | |
| 403 char *fullpath, *filepart; | |
| 404 char *arg; | |
| 405 unsigned len, pathlen; | |
| 406 int ret = 0; | |
| 407 HANDLE hFindFile = NULL; | |
| 408 WIN32_FIND_DATA wfd; | |
| 409 | |
| 410 /* Retrieve arguments */ | |
| 411 while ((arg = getNextArg ((const char**)&lpszCommandLine, &len)) != NULL) | |
| 412 { | |
| 5030 | 413 fullpath = NULL; |
| 414 #ifdef __CYGWIN__ | |
| 415 /* If the filename is not an absolute path, | |
| 416 add the current directory to the pathname */ | |
| 417 if (*arg != '/') | |
| 418 { | |
| 419 len = pathconf(".", _PC_PATH_MAX); | |
| 420 fullpath = (char *) xmalloc (len+1); | |
| 421 if (!fullpath) | |
| 422 { | |
| 423 MessageBox (NULL, "Not enough memory.", "winclient", | |
| 424 MB_ICONEXCLAMATION | MB_OK); | |
| 425 ret = 1; | |
| 426 break; | |
| 427 } | |
| 428 if (!getcwd(fullpath, (size_t)len)) | |
| 429 { | |
| 430 MessageBox (NULL, "Could not retrieve current directory.", | |
| 431 "winclient", MB_ICONEXCLAMATION | MB_OK); | |
| 432 ret = 1; | |
| 433 break; | |
| 434 } | |
| 435 /* Append trailing slash */ | |
| 436 strcat(fullpath, "/"); | |
| 437 ret = doFile (hConv, fullpath, arg); | |
| 438 } | |
| 439 else | |
| 440 { | |
| 441 /* The arg has already been expanded, so pass it as it is */ | |
| 442 ret = doFile (hConv, "", arg); | |
| 443 } | |
| 444 #else | |
| 853 | 445 /* First find the canonical path name */ |
| 446 fullpath = filepart = NULL; | |
| 447 pathlen = GetFullPathName (arg, 0, fullpath, &filepart); | |
| 448 | |
| 449 fullpath = (char *) xmalloc (pathlen); | |
| 450 | |
| 451 if (!fullpath) | |
| 452 { | |
| 453 MessageBox (NULL, "Not enough memory.", "winclient", | |
| 454 MB_ICONEXCLAMATION | MB_OK); | |
| 455 ret = 1; | |
| 456 break; | |
| 457 } | |
| 458 | |
| 459 GetFullPathName (arg, pathlen, fullpath, &filepart); | |
| 460 | |
| 461 /* Find the first matching file */ | |
| 462 hFindFile = FindFirstFile (arg, &wfd); | |
| 463 | |
| 464 if (hFindFile == INVALID_HANDLE_VALUE) | |
| 465 ret = doFile (hConv, fullpath, ""); | |
| 466 else | |
| 467 { | |
| 468 /* Chop off the file part from the full path name */ | |
| 469 if (filepart) | |
| 470 *filepart = '\0'; | |
| 471 | |
| 472 /* For each matching file */ | |
| 473 do | |
| 474 { | |
| 475 /* Process it */ | |
| 476 ret = doFile (hConv, fullpath, wfd.cFileName); | |
| 477 | |
| 478 if (ret) | |
| 479 break; | |
| 480 } | |
| 481 while (FindNextFile (hFindFile, &wfd)); | |
| 482 | |
| 483 FindClose (hFindFile); | |
| 484 } | |
| 5030 | 485 #endif |
| 853 | 486 /* Release the path name buffers */ |
| 5030 | 487 if (fullpath) |
| 488 free (fullpath); | |
| 853 | 489 free (arg); |
| 490 | |
| 491 if (ret) | |
| 492 break; | |
| 493 } | |
| 494 | |
| 495 return ret; | |
| 496 } | |
| 497 | |
| 498 static void | |
| 499 fatal (const char *s1, const char *s2) | |
| 500 { | |
| 501 error (s1, s2); | |
| 502 exit (1); | |
| 503 } | |
| 504 | |
| 505 /* Print error message. `s1' is printf control string, `s2' is arg for it. */ | |
| 506 static void | |
| 507 error (const char* s1, const char* s2) | |
| 508 { | |
| 509 fprintf (stderr, "winclient: "); | |
| 510 fprintf (stderr, s1, s2); | |
| 511 fprintf (stderr, "\n"); | |
| 512 } | |
| 513 | |
| 514 /* Like malloc but get fatal error if memory is exhausted. */ | |
| 515 | |
| 516 static void * | |
| 517 xmalloc (size_t size) | |
| 518 { | |
| 519 void *result = malloc (size); | |
| 520 if (result == NULL) | |
| 521 fatal ("virtual memory exhausted", (char *) 0); | |
| 522 return result; | |
| 523 } |