Commit | Line | Data |
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f927c5ae | 1 | /* Fully extensible Emacs, running on Unix, intended for GNU. |
f8c25f1b | 2 | Copyright (C) 1985, 86, 87, 93, 94, 95 Free Software Foundation, Inc. |
f927c5ae JB |
3 | |
4 | This file is part of GNU Emacs. | |
5 | ||
6 | GNU Emacs is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
40be253a | 8 | the Free Software Foundation; either version 2, or (at your option) |
f927c5ae JB |
9 | any later version. |
10 | ||
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU Emacs; see the file COPYING. If not, write to | |
18 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
19 | ||
20 | ||
21 | #include <signal.h> | |
22 | #include <errno.h> | |
23 | ||
18160b98 | 24 | #include <config.h> |
f927c5ae JB |
25 | #include <stdio.h> |
26 | ||
27 | #include <sys/types.h> | |
28 | #include <sys/file.h> | |
29 | ||
30 | #ifdef VMS | |
31 | #include <ssdef.h> | |
32 | #endif | |
33 | ||
f927c5ae JB |
34 | #ifdef BSD |
35 | #include <sys/ioctl.h> | |
36 | #endif | |
37 | ||
f927c5ae JB |
38 | #include "lisp.h" |
39 | #include "commands.h" | |
bef79ee4 | 40 | #include "intervals.h" |
f927c5ae | 41 | |
edc8ae07 | 42 | #include "systty.h" |
8090eb09 | 43 | #include "syssignal.h" |
6c362a8b | 44 | #include "process.h" |
a41f8bed | 45 | |
f927c5ae JB |
46 | #ifndef O_RDWR |
47 | #define O_RDWR 2 | |
48 | #endif | |
49 | ||
43165242 KH |
50 | extern void malloc_warning (); |
51 | extern char *index (); | |
52 | extern char *strerror (); | |
53 | ||
f927c5ae JB |
54 | /* Command line args from shell, as list of strings */ |
55 | Lisp_Object Vcommand_line_args; | |
56 | ||
59653951 JB |
57 | /* The name under which Emacs was invoked, with any leading directory |
58 | names discarded. */ | |
59 | Lisp_Object Vinvocation_name; | |
60 | ||
ace40a69 RS |
61 | /* The directory name from which Emacs was invoked. */ |
62 | Lisp_Object Vinvocation_directory; | |
63 | ||
07f4d123 RS |
64 | /* The directory name in which to find subdirs such as lisp and etc. |
65 | nil means get them only from PATH_LOADSEARCH. */ | |
66 | Lisp_Object Vinstallation_directory; | |
67 | ||
e5d77022 JB |
68 | /* Hook run by `kill-emacs' before it does really anything. */ |
69 | Lisp_Object Vkill_emacs_hook; | |
70 | ||
f927c5ae JB |
71 | /* Set nonzero after Emacs has started up the first time. |
72 | Prevents reinitialization of the Lisp world and keymaps | |
73 | on subsequent starts. */ | |
74 | int initialized; | |
75 | ||
271c7b7c | 76 | /* Variable whose value is symbol giving operating system type. */ |
f927c5ae | 77 | Lisp_Object Vsystem_type; |
271c7b7c RS |
78 | |
79 | /* Variable whose value is string giving configuration built for. */ | |
80 | Lisp_Object Vsystem_configuration; | |
f0fc0b1a KH |
81 | |
82 | /* Variable whose value is string giving configuration options, | |
83 | for use when reporting bugs. */ | |
84 | Lisp_Object Vsystem_configuration_options; | |
85 | ||
f927c5ae JB |
86 | /* If non-zero, emacs should not attempt to use an window-specific code, |
87 | but instead should use the virtual terminal under which it was started */ | |
88 | int inhibit_window_system; | |
89 | ||
5aa7f46a JB |
90 | /* If nonzero, set Emacs to run at this priority. This is also used |
91 | in child_setup and sys_suspend to make sure subshells run at normal | |
92 | priority; Those functions have their own extern declaration. */ | |
3005da00 RS |
93 | int emacs_priority; |
94 | ||
7074fde6 FP |
95 | /* If non-zero a filter or a sentinel is running. Tested to save the match |
96 | data on the first attempt to change it inside asynchronous code. */ | |
97 | int running_asynch_code; | |
98 | ||
647cec74 | 99 | #ifdef BSD_PGRPS |
9ae8f997 JB |
100 | /* See sysdep.c. */ |
101 | extern int inherited_pgroup; | |
102 | #endif | |
103 | ||
f927c5ae JB |
104 | #ifdef HAVE_X_WINDOWS |
105 | /* If non-zero, -d was specified, meaning we're using some window system. */ | |
106 | int display_arg; | |
107 | #endif | |
108 | ||
109 | /* An address near the bottom of the stack. | |
110 | Tells GC how to save a copy of the stack. */ | |
111 | char *stack_bottom; | |
112 | ||
8ba50e1a | 113 | #ifdef HAVE_WINDOW_SYSTEM |
f927c5ae | 114 | extern Lisp_Object Vwindow_system; |
8ba50e1a | 115 | #endif /* HAVE_WINDOW_SYSTEM */ |
f927c5ae | 116 | |
1090a161 RS |
117 | extern Lisp_Object Vauto_save_list_file_name; |
118 | ||
f927c5ae JB |
119 | #ifdef USG_SHARED_LIBRARIES |
120 | /* If nonzero, this is the place to put the end of the writable segment | |
121 | at startup. */ | |
122 | ||
123 | unsigned int bss_end = 0; | |
124 | #endif | |
125 | ||
126 | /* Nonzero means running Emacs without interactive terminal. */ | |
127 | ||
128 | int noninteractive; | |
129 | ||
130 | /* Value of Lisp variable `noninteractive'. | |
131 | Normally same as C variable `noninteractive' | |
132 | but nothing terrible happens if user sets this one. */ | |
133 | ||
134 | int noninteractive1; | |
e29f86e4 RS |
135 | |
136 | /* Save argv and argc. */ | |
137 | char **initial_argv; | |
138 | int initial_argc; | |
081bef73 RS |
139 | |
140 | static void sort_args (); | |
f927c5ae JB |
141 | \f |
142 | /* Signal code for the fatal signal that was received */ | |
143 | int fatal_error_code; | |
144 | ||
145 | /* Nonzero if handling a fatal error already */ | |
146 | int fatal_error_in_progress; | |
147 | ||
148 | /* Handle bus errors, illegal instruction, etc. */ | |
2447c626 | 149 | SIGTYPE |
f927c5ae JB |
150 | fatal_error_signal (sig) |
151 | int sig; | |
152 | { | |
f927c5ae JB |
153 | fatal_error_code = sig; |
154 | signal (sig, SIG_DFL); | |
155 | ||
156 | /* If fatal error occurs in code below, avoid infinite recursion. */ | |
8090eb09 JB |
157 | if (! fatal_error_in_progress) |
158 | { | |
159 | fatal_error_in_progress = 1; | |
f927c5ae | 160 | |
f7ab4e3d | 161 | shut_down_emacs (sig, 0, Qnil); |
8090eb09 | 162 | } |
f927c5ae JB |
163 | |
164 | #ifdef VMS | |
f927c5ae JB |
165 | LIB$STOP (SS$_ABORT); |
166 | #else | |
8090eb09 JB |
167 | /* Signal the same code; this time it will really be fatal. |
168 | Remember that since we're in a signal handler, the signal we're | |
169 | going to send is probably blocked, so we have to unblock it if we | |
170 | want to really receive it. */ | |
29b89fe0 | 171 | #ifndef MSDOS |
a90538cb | 172 | sigunblock (sigmask (fatal_error_code)); |
29b89fe0 | 173 | #endif |
f927c5ae JB |
174 | kill (getpid (), fatal_error_code); |
175 | #endif /* not VMS */ | |
176 | } | |
271c7b7c RS |
177 | |
178 | #ifdef SIGDANGER | |
179 | ||
16c323ee | 180 | /* Handler for SIGDANGER. */ |
271c7b7c RS |
181 | SIGTYPE |
182 | memory_warning_signal (sig) | |
183 | int sig; | |
184 | { | |
185 | signal (sig, memory_warning_signal); | |
186 | ||
187 | malloc_warning ("Operating system warns that virtual memory is running low.\n"); | |
55796183 RS |
188 | |
189 | /* It might be unsafe to call do_auto_save now. */ | |
190 | force_auto_save_soon (); | |
271c7b7c RS |
191 | } |
192 | #endif | |
f927c5ae JB |
193 | \f |
194 | /* Code for dealing with Lisp access to the Unix command line */ | |
195 | ||
196 | static | |
197 | init_cmdargs (argc, argv, skip_args) | |
198 | int argc; | |
199 | char **argv; | |
200 | int skip_args; | |
201 | { | |
202 | register int i; | |
07f4d123 | 203 | Lisp_Object name, dir; |
f927c5ae | 204 | |
e29f86e4 RS |
205 | initial_argv = argv; |
206 | initial_argc = argc; | |
207 | ||
cb421be8 | 208 | Vinvocation_name = Ffile_name_nondirectory (build_string (argv[0])); |
ace40a69 RS |
209 | Vinvocation_directory = Ffile_name_directory (build_string (argv[0])); |
210 | /* If we got no directory in argv[0], search PATH to find where | |
211 | Emacs actually came from. */ | |
212 | if (NILP (Vinvocation_directory)) | |
213 | { | |
214 | Lisp_Object found; | |
215 | int yes = openp (Vexec_path, Vinvocation_name, | |
6c362a8b | 216 | EXEC_SUFFIXES, &found, 1); |
e443f843 | 217 | if (yes == 1) |
ace40a69 RS |
218 | Vinvocation_directory = Ffile_name_directory (found); |
219 | } | |
59653951 | 220 | |
4133b300 RS |
221 | if (!NILP (Vinvocation_directory) |
222 | && NILP (Ffile_name_absolute_p (Vinvocation_directory))) | |
223 | /* Emacs was started with relative path, like ./emacs */ | |
224 | Vinvocation_directory = Fexpand_file_name (Vinvocation_directory, Qnil); | |
225 | ||
07f4d123 RS |
226 | Vinstallation_directory = Qnil; |
227 | ||
228 | if (!NILP (Vinvocation_directory)) | |
229 | { | |
230 | dir = Vinvocation_directory; | |
231 | name = Fexpand_file_name (Vinvocation_name, dir); | |
232 | while (1) | |
233 | { | |
f5ab9736 | 234 | Lisp_Object tem, lib_src_exists; |
07f4d123 RS |
235 | Lisp_Object etc_exists, info_exists; |
236 | ||
f5ab9736 RS |
237 | /* See if dir contains subdirs for use by Emacs. |
238 | Check for the ones that would exist in a build directory, | |
239 | not including lisp and info. */ | |
240 | tem = Fexpand_file_name (build_string ("lib-src"), dir); | |
241 | lib_src_exists = Ffile_exists_p (tem); | |
242 | if (!NILP (lib_src_exists)) | |
07f4d123 | 243 | { |
f5ab9736 RS |
244 | tem = Fexpand_file_name (build_string ("etc"), dir); |
245 | etc_exists = Ffile_exists_p (tem); | |
246 | if (!NILP (etc_exists)) | |
07f4d123 | 247 | { |
f5ab9736 RS |
248 | Vinstallation_directory |
249 | = Ffile_name_as_directory (dir); | |
250 | break; | |
07f4d123 RS |
251 | } |
252 | } | |
253 | ||
254 | /* See if dir's parent contains those subdirs. */ | |
f5ab9736 RS |
255 | tem = Fexpand_file_name (build_string ("../lib-src"), dir); |
256 | lib_src_exists = Ffile_exists_p (tem); | |
257 | if (!NILP (lib_src_exists)) | |
07f4d123 | 258 | { |
f5ab9736 RS |
259 | tem = Fexpand_file_name (build_string ("../etc"), dir); |
260 | etc_exists = Ffile_exists_p (tem); | |
261 | if (!NILP (etc_exists)) | |
07f4d123 | 262 | { |
f5ab9736 RS |
263 | tem = Fexpand_file_name (build_string (".."), dir); |
264 | Vinstallation_directory | |
265 | = Ffile_name_as_directory (tem); | |
266 | break; | |
07f4d123 RS |
267 | } |
268 | } | |
269 | ||
270 | /* If the Emacs executable is actually a link, | |
271 | next try the dir that the link points into. */ | |
272 | tem = Ffile_symlink_p (name); | |
273 | if (!NILP (tem)) | |
274 | { | |
260ec24d | 275 | name = Fexpand_file_name (tem, dir); |
07f4d123 RS |
276 | dir = Ffile_name_directory (name); |
277 | } | |
278 | else | |
279 | break; | |
280 | } | |
281 | } | |
282 | ||
f927c5ae JB |
283 | Vcommand_line_args = Qnil; |
284 | ||
285 | for (i = argc - 1; i >= 0; i--) | |
286 | { | |
287 | if (i == 0 || i > skip_args) | |
288 | Vcommand_line_args | |
289 | = Fcons (build_string (argv[i]), Vcommand_line_args); | |
290 | } | |
291 | } | |
59653951 JB |
292 | |
293 | DEFUN ("invocation-name", Finvocation_name, Sinvocation_name, 0, 0, 0, | |
294 | "Return the program name that was used to run Emacs.\n\ | |
295 | Any directory names are omitted.") | |
296 | () | |
297 | { | |
298 | return Fcopy_sequence (Vinvocation_name); | |
299 | } | |
300 | ||
ace40a69 RS |
301 | DEFUN ("invocation-directory", Finvocation_directory, Sinvocation_directory, |
302 | 0, 0, 0, | |
303 | "Return the directory name in which the Emacs executable was located") | |
304 | () | |
305 | { | |
306 | return Fcopy_sequence (Vinvocation_directory); | |
307 | } | |
308 | ||
f927c5ae JB |
309 | \f |
310 | #ifdef VMS | |
311 | #ifdef LINK_CRTL_SHARE | |
312 | #ifdef SHAREABLE_LIB_BUG | |
313 | extern noshare char **environ; | |
314 | #endif /* SHAREABLE_LIB_BUG */ | |
315 | #endif /* LINK_CRTL_SHARE */ | |
316 | #endif /* VMS */ | |
317 | ||
a90538cb | 318 | #ifndef ORDINARY_LINK |
efd241cc RS |
319 | /* We don't include crtbegin.o and crtend.o in the link, |
320 | so these functions and variables might be missed. | |
321 | Provide dummy definitions to avoid error. | |
322 | (We don't have any real constructors or destructors.) */ | |
323 | #ifdef __GNUC__ | |
46e65b73 | 324 | #ifndef GCC_CTORS_IN_LIBC |
c83a7064 | 325 | __do_global_ctors () |
efd241cc | 326 | {} |
c83a7064 RS |
327 | __do_global_ctors_aux () |
328 | {} | |
33143604 RS |
329 | __do_global_dtors () |
330 | {} | |
64c1864a RS |
331 | /* Linux has a bug in its library; avoid an error. */ |
332 | #ifndef LINUX | |
c83a7064 | 333 | char * __CTOR_LIST__[2] = { (char *) (-1), 0 }; |
64c1864a | 334 | #endif |
c83a7064 | 335 | char * __DTOR_LIST__[2] = { (char *) (-1), 0 }; |
46e65b73 | 336 | #endif /* GCC_CTORS_IN_LIBC */ |
c83a7064 | 337 | __main () |
efd241cc | 338 | {} |
efd241cc | 339 | #endif /* __GNUC__ */ |
a90538cb | 340 | #endif /* ORDINARY_LINK */ |
efd241cc | 341 | |
e2925360 KH |
342 | /* Test whether the next argument in ARGV matches SSTR or a prefix of |
343 | LSTR (at least MINLEN characters). If so, then if VALPTR is non-null | |
344 | (the argument is supposed to have a value) store in *VALPTR either | |
345 | the next argument or the portion of this one after the equal sign. | |
346 | ARGV is read starting at position *SKIPPTR; this index is advanced | |
347 | by the number of arguments used. | |
348 | ||
349 | Too bad we can't just use getopt for all of this, but we don't have | |
350 | enough information to do it right. */ | |
081bef73 | 351 | |
e2925360 | 352 | static int |
df6530f8 | 353 | argmatch (argv, argc, sstr, lstr, minlen, valptr, skipptr) |
e2925360 | 354 | char **argv; |
df6530f8 | 355 | int argc; |
e2925360 KH |
356 | char *sstr; |
357 | char *lstr; | |
358 | int minlen; | |
359 | char **valptr; | |
360 | int *skipptr; | |
361 | { | |
362 | char *p; | |
363 | int arglen; | |
df6530f8 RS |
364 | char *arg; |
365 | ||
366 | /* Don't access argv[argc]; give up in advance. */ | |
367 | if (argc <= *skipptr + 1) | |
368 | return 0; | |
369 | ||
370 | arg = argv[*skipptr+1]; | |
e2925360 KH |
371 | if (arg == NULL) |
372 | return 0; | |
373 | if (strcmp (arg, sstr) == 0) | |
374 | { | |
375 | if (valptr != NULL) | |
376 | { | |
377 | *valptr = argv[*skipptr+2]; | |
378 | *skipptr += 2; | |
379 | } | |
380 | else | |
381 | *skipptr += 1; | |
382 | return 1; | |
383 | } | |
384 | arglen = (valptr != NULL && (p = index (arg, '=')) != NULL | |
385 | ? p - arg : strlen (arg)); | |
c03e1113 | 386 | if (lstr == 0 || arglen < minlen || strncmp (arg, lstr, arglen) != 0) |
e2925360 KH |
387 | return 0; |
388 | else if (valptr == NULL) | |
389 | { | |
390 | *skipptr += 1; | |
391 | return 1; | |
392 | } | |
393 | else if (p != NULL) | |
394 | { | |
395 | *valptr = p+1; | |
396 | *skipptr += 1; | |
397 | return 1; | |
398 | } | |
399 | else if (argv[*skipptr+2] != NULL) | |
400 | { | |
401 | *valptr = argv[*skipptr+2]; | |
402 | *skipptr += 2; | |
403 | return 1; | |
404 | } | |
405 | else | |
406 | { | |
407 | return 0; | |
408 | } | |
409 | } | |
410 | ||
f927c5ae JB |
411 | /* ARGSUSED */ |
412 | main (argc, argv, envp) | |
413 | int argc; | |
414 | char **argv; | |
415 | char **envp; | |
416 | { | |
417 | char stack_bottom_variable; | |
418 | int skip_args = 0; | |
419 | extern int errno; | |
420 | extern sys_nerr; | |
f927c5ae | 421 | |
6000fe37 RS |
422 | #ifdef LINUX_SBRK_BUG |
423 | __sbrk (1); | |
424 | #endif | |
425 | ||
081bef73 RS |
426 | sort_args (argc, argv); |
427 | ||
1702afef RS |
428 | if (argmatch (argv, argc, "-version", "--version", 3, NULL, &skip_args)) |
429 | { | |
430 | Lisp_Object tem; | |
431 | tem = Fsymbol_value (intern ("emacs-version")); | |
432 | if (!STRINGP (tem)) | |
433 | { | |
434 | fprintf (stderr, "Invalid value of `emacs-version'\n"); | |
435 | exit (1); | |
436 | } | |
437 | else | |
438 | { | |
439 | printf ("%s\n", XSTRING (tem)->data); | |
440 | exit (0); | |
441 | } | |
442 | } | |
443 | ||
f927c5ae JB |
444 | /* Map in shared memory, if we are using that. */ |
445 | #ifdef HAVE_SHM | |
df6530f8 | 446 | if (argmatch (argv, argc, "-nl", "--no-shared-memory", 6, NULL, &skip_args)) |
f927c5ae JB |
447 | { |
448 | map_in_data (0); | |
449 | /* The shared memory was just restored, which clobbered this. */ | |
450 | skip_args = 1; | |
451 | } | |
452 | else | |
453 | { | |
454 | map_in_data (1); | |
455 | /* The shared memory was just restored, which clobbered this. */ | |
456 | skip_args = 0; | |
457 | } | |
458 | #endif | |
459 | ||
19a36ec6 | 460 | #ifdef NeXT |
b9df9faa KH |
461 | { |
462 | extern int malloc_cookie; | |
463 | /* This helps out unexnext.c. */ | |
464 | if (initialized) | |
465 | if (malloc_jumpstart (malloc_cookie) != 0) | |
466 | printf ("malloc jumpstart failed!\n"); | |
467 | } | |
19a36ec6 RS |
468 | #endif /* NeXT */ |
469 | ||
f927c5ae JB |
470 | #ifdef VMS |
471 | /* If -map specified, map the data file in */ | |
e2925360 KH |
472 | { |
473 | char *file; | |
df6530f8 | 474 | if (argmatch (argv, argc, "-map", "--map-data", 3, &mapin_file, &skip_args)) |
e2925360 KH |
475 | mapin_data (file); |
476 | } | |
f927c5ae JB |
477 | |
478 | #ifdef LINK_CRTL_SHARE | |
479 | #ifdef SHAREABLE_LIB_BUG | |
480 | /* Bletcherous shared libraries! */ | |
481 | if (!stdin) | |
482 | stdin = fdopen (0, "r"); | |
483 | if (!stdout) | |
484 | stdout = fdopen (1, "w"); | |
485 | if (!stderr) | |
486 | stderr = fdopen (2, "w"); | |
487 | if (!environ) | |
488 | environ = envp; | |
489 | #endif /* SHAREABLE_LIB_BUG */ | |
490 | #endif /* LINK_CRTL_SHARE */ | |
491 | #endif /* VMS */ | |
492 | ||
493 | /* Record (approximately) where the stack begins. */ | |
494 | stack_bottom = &stack_bottom_variable; | |
495 | ||
496 | #ifdef RUN_TIME_REMAP | |
497 | if (initialized) | |
498 | run_time_remap (argv[0]); | |
499 | #endif | |
500 | ||
501 | #ifdef USG_SHARED_LIBRARIES | |
502 | if (bss_end) | |
1d233b80 | 503 | brk ((void *)bss_end); |
f927c5ae JB |
504 | #endif |
505 | ||
506 | clearerr (stdin); | |
9ae8f997 | 507 | |
f927c5ae JB |
508 | #ifndef SYSTEM_MALLOC |
509 | if (! initialized) | |
9ac0d9e0 JB |
510 | { |
511 | /* Arrange to get warning messages as memory fills up. */ | |
512 | memory_warnings (0, malloc_warning); | |
513 | ||
514 | /* Arrange to disable interrupt input while malloc and friends are | |
515 | running. */ | |
516 | uninterrupt_malloc (); | |
517 | } | |
f927c5ae JB |
518 | #endif /* not SYSTEM_MALLOC */ |
519 | ||
29b89fe0 RS |
520 | #ifdef MSDOS |
521 | /* We do all file input/output as binary files. When we need to translate | |
522 | newlines, we do that manually. */ | |
523 | _fmode = O_BINARY; | |
524 | (stdin)->_flag &= ~_IOTEXT; | |
525 | (stdout)->_flag &= ~_IOTEXT; | |
526 | (stderr)->_flag &= ~_IOTEXT; | |
527 | #endif /* MSDOS */ | |
528 | ||
a422068f | 529 | #ifdef SET_EMACS_PRIORITY |
3005da00 | 530 | if (emacs_priority) |
5aa7f46a | 531 | nice (emacs_priority); |
f927c5ae | 532 | setuid (getuid ()); |
a422068f | 533 | #endif /* SET_EMACS_PRIORITY */ |
f927c5ae | 534 | |
d8b3a65d | 535 | #ifdef EXTRA_INITIALIZE |
a9260219 | 536 | EXTRA_INITIALIZE; |
d8b3a65d RS |
537 | #endif |
538 | ||
f927c5ae JB |
539 | inhibit_window_system = 0; |
540 | ||
4fc0b45b | 541 | /* Handle the -t switch, which specifies filename to use as terminal */ |
e2925360 KH |
542 | { |
543 | char *term; | |
df6530f8 | 544 | if (argmatch (argv, argc, "-t", "--terminal", 4, &term, &skip_args)) |
e2925360 KH |
545 | { |
546 | int result; | |
547 | close (0); | |
548 | close (1); | |
549 | result = open (term, O_RDWR, 2 ); | |
550 | if (result < 0) | |
551 | { | |
552 | char *errstring = strerror (errno); | |
553 | fprintf (stderr, "emacs: %s: %s\n", term, errstring); | |
554 | exit (1); | |
555 | } | |
556 | dup (0); | |
557 | if (! isatty (0)) | |
558 | { | |
559 | fprintf (stderr, "emacs: %s: not a tty\n", term); | |
560 | exit (1); | |
561 | } | |
562 | fprintf (stderr, "Using %s\n", term); | |
8ba50e1a | 563 | #ifdef HAVE_WINDOW_SYSTEM |
e2925360 | 564 | inhibit_window_system = 1; /* -t => -nw */ |
f927c5ae | 565 | #endif |
e2925360 KH |
566 | } |
567 | } | |
df6530f8 | 568 | if (argmatch (argv, argc, "-nw", "--no-windows", 6, NULL, &skip_args)) |
e2925360 | 569 | inhibit_window_system = 1; |
f927c5ae | 570 | |
e2925360 | 571 | /* Handle the -batch switch, which means don't do interactive display. */ |
f927c5ae | 572 | noninteractive = 0; |
df6530f8 | 573 | if (argmatch (argv, argc, "-batch", "--batch", 5, NULL, &skip_args)) |
e2925360 KH |
574 | noninteractive = 1; |
575 | ||
576 | /* Handle the --help option, which gives a usage message.. */ | |
df6530f8 | 577 | if (argmatch (argv, argc, "-help", "--help", 3, NULL, &skip_args)) |
f927c5ae | 578 | { |
e2925360 KH |
579 | printf ("\ |
580 | Usage: %s [-t term] [--terminal term] [-nw] [--no-windows] [--batch]\n\ | |
581 | [-q] [--no-init-file] [-u user] [--user user] [--debug-init]\n\ | |
afaa660f | 582 | [--version] [--no-site-file]\n\ |
e2925360 | 583 | [-f func] [--funcall func] [-l file] [--load file] [--insert file]\n\ |
afaa660f | 584 | [+linenum] file-to-visit [--kill]\n", argv[0]); |
e2925360 | 585 | exit (0); |
f927c5ae JB |
586 | } |
587 | ||
081bef73 RS |
588 | #ifdef HAVE_X_WINDOWS |
589 | /* Stupid kludge to catch command-line display spec. We can't | |
590 | handle this argument entirely in window system dependent code | |
591 | because we don't even know which window system dependent code | |
592 | to run until we've recognized this argument. */ | |
593 | { | |
594 | char *displayname; | |
595 | int i; | |
596 | int count_before = skip_args; | |
597 | ||
df6530f8 | 598 | if (argmatch (argv, argc, "-d", "--display", 3, &displayname, &skip_args)) |
081bef73 | 599 | display_arg = 1; |
df6530f8 | 600 | else if (argmatch (argv, argc, "-display", 0, 3, &displayname, &skip_args)) |
081bef73 RS |
601 | display_arg = 1; |
602 | ||
603 | /* If we have the form --display=NAME, | |
604 | convert it into -d name. | |
605 | This requires inserting a new element into argv. */ | |
606 | if (displayname != 0 && skip_args - count_before == 1) | |
607 | { | |
608 | char **new = (char **) xmalloc (sizeof (char *) * (argc + 2)); | |
609 | int j; | |
610 | ||
611 | for (j = 0; j < count_before + 1; j++) | |
612 | new[j] = argv[j]; | |
613 | new[count_before + 1] = "-d"; | |
614 | new[count_before + 2] = displayname; | |
615 | for (j = count_before + 2; j <argc; j++) | |
616 | new[j + 1] = argv[j]; | |
617 | argv = new; | |
618 | argc++; | |
619 | } | |
1702afef RS |
620 | /* Change --display to -d, when its arg is separate. */ |
621 | else if (displayname != 0 && skip_args > count_before | |
622 | && argv[count_before + 1][1] == '-') | |
813f79d5 | 623 | argv[count_before + 1] = "-d"; |
081bef73 RS |
624 | |
625 | /* Don't actually discard this arg. */ | |
626 | skip_args = count_before; | |
627 | } | |
628 | #endif | |
629 | ||
edb85f59 RS |
630 | if (! noninteractive) |
631 | { | |
632 | #ifdef BSD_PGRPS | |
633 | if (initialized) | |
634 | { | |
635 | inherited_pgroup = EMACS_GETPGRP (0); | |
636 | setpgrp (0, getpid ()); | |
637 | } | |
638 | #else | |
639 | #if defined (USG5) && defined (INTERRUPT_INPUT) | |
640 | setpgrp (); | |
641 | #endif | |
642 | #endif | |
643 | } | |
644 | ||
fb8e9847 JB |
645 | #ifdef POSIX_SIGNALS |
646 | init_signals (); | |
647 | #endif | |
648 | ||
f927c5ae JB |
649 | if ( |
650 | #ifndef CANNOT_DUMP | |
651 | ! noninteractive || initialized | |
652 | #else | |
653 | 1 | |
654 | #endif | |
655 | ) | |
656 | { | |
657 | /* Don't catch these signals in batch mode if not initialized. | |
658 | On some machines, this sets static data that would make | |
659 | signal fail to work right when the dumped Emacs is run. */ | |
660 | signal (SIGHUP, fatal_error_signal); | |
661 | signal (SIGQUIT, fatal_error_signal); | |
662 | signal (SIGILL, fatal_error_signal); | |
663 | signal (SIGTRAP, fatal_error_signal); | |
99e372cd RS |
664 | #ifdef SIGABRT |
665 | signal (SIGABRT, fatal_error_signal); | |
666 | #endif | |
667 | #ifdef SIGHWE | |
668 | signal (SIGHWE, fatal_error_signal); | |
669 | #endif | |
670 | #ifdef SIGPRE | |
671 | signal (SIGPRE, fatal_error_signal); | |
672 | #endif | |
673 | #ifdef SIGORE | |
674 | signal (SIGORE, fatal_error_signal); | |
675 | #endif | |
676 | #ifdef SIGUME | |
677 | signal (SIGUME, fatal_error_signal); | |
678 | #endif | |
679 | #ifdef SIGDLK | |
680 | signal (SIGDLK, fatal_error_signal); | |
681 | #endif | |
682 | #ifdef SIGCPULIM | |
683 | signal (SIGCPULIM, fatal_error_signal); | |
684 | #endif | |
a90538cb JB |
685 | #ifdef SIGIOT |
686 | /* This is missing on some systems - OS/2, for example. */ | |
f927c5ae | 687 | signal (SIGIOT, fatal_error_signal); |
a90538cb | 688 | #endif |
f927c5ae JB |
689 | #ifdef SIGEMT |
690 | signal (SIGEMT, fatal_error_signal); | |
691 | #endif | |
692 | signal (SIGFPE, fatal_error_signal); | |
00eaaa32 | 693 | #ifdef SIGBUS |
f927c5ae | 694 | signal (SIGBUS, fatal_error_signal); |
00eaaa32 | 695 | #endif |
f927c5ae | 696 | signal (SIGSEGV, fatal_error_signal); |
00eaaa32 | 697 | #ifdef SIGSYS |
f927c5ae | 698 | signal (SIGSYS, fatal_error_signal); |
00eaaa32 | 699 | #endif |
f927c5ae JB |
700 | signal (SIGTERM, fatal_error_signal); |
701 | #ifdef SIGXCPU | |
702 | signal (SIGXCPU, fatal_error_signal); | |
703 | #endif | |
704 | #ifdef SIGXFSZ | |
705 | signal (SIGXFSZ, fatal_error_signal); | |
706 | #endif /* SIGXFSZ */ | |
707 | ||
271c7b7c RS |
708 | #ifdef SIGDANGER |
709 | /* This just means available memory is getting low. */ | |
710 | signal (SIGDANGER, memory_warning_signal); | |
711 | #endif | |
712 | ||
f927c5ae | 713 | #ifdef AIX |
56e034fa RS |
714 | /* 20 is SIGCHLD, 21 is SIGTTIN, 22 is SIGTTOU. */ |
715 | signal (SIGXCPU, fatal_error_signal); | |
0aef8561 | 716 | #ifndef _I386 |
f927c5ae | 717 | signal (SIGIOINT, fatal_error_signal); |
0aef8561 | 718 | #endif |
f927c5ae JB |
719 | signal (SIGGRANT, fatal_error_signal); |
720 | signal (SIGRETRACT, fatal_error_signal); | |
721 | signal (SIGSOUND, fatal_error_signal); | |
722 | signal (SIGMSG, fatal_error_signal); | |
723 | #endif /* AIX */ | |
724 | } | |
725 | ||
726 | noninteractive1 = noninteractive; | |
727 | ||
728 | /* Perform basic initializations (not merely interning symbols) */ | |
729 | ||
730 | if (!initialized) | |
731 | { | |
732 | init_alloc_once (); | |
733 | init_obarray (); | |
734 | init_eval_once (); | |
735 | init_syntax_once (); /* Create standard syntax table. */ | |
736 | /* Must be done before init_buffer */ | |
737 | init_casetab_once (); | |
738 | init_buffer_once (); /* Create buffer table and some buffers */ | |
739 | init_minibuf_once (); /* Create list of minibuffers */ | |
740 | /* Must precede init_window_once */ | |
741 | init_window_once (); /* Init the window system */ | |
742 | } | |
743 | ||
744 | init_alloc (); | |
f927c5ae JB |
745 | init_eval (); |
746 | init_data (); | |
7074fde6 | 747 | running_asynch_code = 0; |
0e956009 | 748 | |
29b89fe0 RS |
749 | #ifdef MSDOS |
750 | /* Call early 'cause init_environment needs it. */ | |
751 | init_dosfns (); | |
752 | /* Set defaults for several environment variables. */ | |
753 | if (initialized) init_environment (argc, argv, skip_args); | |
fc300075 | 754 | else init_gettimeofday (); |
29b89fe0 RS |
755 | #endif |
756 | ||
8ba50e1a GV |
757 | #ifdef WINDOWSNT |
758 | /* Initialize environment from registry settings. */ | |
759 | init_environment (); | |
760 | #endif | |
761 | ||
0e956009 JB |
762 | /* egetenv is a pretty low-level facility, which may get called in |
763 | many circumstances; it seems flimsy to put off initializing it | |
764 | until calling init_callproc. */ | |
765 | set_process_environment (); | |
93aed04d RS |
766 | /* AIX crashes are reported in system versions 3.2.3 and 3.2.4 |
767 | if this is not done. Do it after set_process_environment so that we | |
768 | don't pollute Vprocess_environment. */ | |
769 | #ifdef AIX | |
770 | putenv ("LANG=C"); | |
771 | #endif | |
0e956009 | 772 | |
ace40a69 RS |
773 | init_buffer (); /* Init default directory of main buffer */ |
774 | ||
7928f0b5 | 775 | init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */ |
ace40a69 | 776 | init_cmdargs (argc, argv, skip_args); /* Must precede init_lread. */ |
7928f0b5 | 777 | init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */ |
fb8e9847 | 778 | init_lread (); |
f927c5ae | 779 | |
f927c5ae JB |
780 | if (!noninteractive) |
781 | { | |
782 | #ifdef VMS | |
1cbd5d9d | 783 | init_vms_input ();/* init_display calls get_frame_size, that needs this */ |
f927c5ae JB |
784 | #endif /* VMS */ |
785 | init_display (); /* Determine terminal type. init_sys_modes uses results */ | |
786 | } | |
787 | init_keyboard (); /* This too must precede init_sys_modes */ | |
f927c5ae JB |
788 | #ifdef VMS |
789 | init_vmsproc (); /* And this too. */ | |
790 | #endif /* VMS */ | |
791 | init_sys_modes (); /* Init system terminal modes (RAW or CBREAK, etc.) */ | |
792 | init_xdisp (); | |
793 | init_macros (); | |
794 | init_editfns (); | |
795 | #ifdef LISP_FLOAT_TYPE | |
796 | init_floatfns (); | |
797 | #endif | |
798 | #ifdef VMS | |
799 | init_vmsfns (); | |
800 | #endif /* VMS */ | |
f927c5ae | 801 | init_process (); |
32676c08 JB |
802 | #ifdef CLASH_DETECTION |
803 | init_filelock (); | |
804 | #endif /* CLASH_DETECTION */ | |
f927c5ae JB |
805 | |
806 | /* Intern the names of all standard functions and variables; define standard keys */ | |
807 | ||
808 | if (!initialized) | |
809 | { | |
810 | /* The basic levels of Lisp must come first */ | |
811 | /* And data must come first of all | |
812 | for the sake of symbols like error-message */ | |
813 | syms_of_data (); | |
814 | syms_of_alloc (); | |
fb8e9847 | 815 | syms_of_lread (); |
f927c5ae JB |
816 | syms_of_print (); |
817 | syms_of_eval (); | |
818 | syms_of_fns (); | |
f927c5ae | 819 | syms_of_floatfns (); |
f927c5ae JB |
820 | |
821 | syms_of_abbrev (); | |
822 | syms_of_buffer (); | |
823 | syms_of_bytecode (); | |
824 | syms_of_callint (); | |
825 | syms_of_casefiddle (); | |
826 | syms_of_casetab (); | |
827 | syms_of_callproc (); | |
828 | syms_of_cmds (); | |
829 | #ifndef NO_DIR_LIBRARY | |
830 | syms_of_dired (); | |
831 | #endif /* not NO_DIR_LIBRARY */ | |
832 | syms_of_display (); | |
833 | syms_of_doc (); | |
834 | syms_of_editfns (); | |
835 | syms_of_emacs (); | |
836 | syms_of_fileio (); | |
837 | #ifdef CLASH_DETECTION | |
838 | syms_of_filelock (); | |
839 | #endif /* CLASH_DETECTION */ | |
840 | syms_of_indent (); | |
841 | syms_of_keyboard (); | |
842 | syms_of_keymap (); | |
843 | syms_of_macros (); | |
844 | syms_of_marker (); | |
845 | syms_of_minibuf (); | |
846 | syms_of_mocklisp (); | |
f927c5ae | 847 | syms_of_process (); |
f927c5ae | 848 | syms_of_search (); |
1cbd5d9d | 849 | syms_of_frame (); |
f927c5ae | 850 | syms_of_syntax (); |
0d934e7b | 851 | syms_of_term (); |
f927c5ae | 852 | syms_of_undo (); |
bef79ee4 JA |
853 | |
854 | /* Only defined if Emacs is compiled with USE_TEXT_PROPERTIES */ | |
855 | syms_of_textprop (); | |
f927c5ae JB |
856 | #ifdef VMS |
857 | syms_of_vmsproc (); | |
858 | #endif /* VMS */ | |
859 | syms_of_window (); | |
860 | syms_of_xdisp (); | |
861 | #ifdef HAVE_X_WINDOWS | |
72412588 | 862 | syms_of_xterm (); |
f927c5ae | 863 | syms_of_xfns (); |
9c3f23b7 | 864 | syms_of_xfaces (); |
72412588 JB |
865 | #ifdef HAVE_X11 |
866 | syms_of_xselect (); | |
867 | #endif | |
f927c5ae JB |
868 | #endif /* HAVE_X_WINDOWS */ |
869 | ||
87485d6f MW |
870 | #if defined (MSDOS) && !defined (HAVE_X_WINDOWS) |
871 | syms_of_xfaces (); | |
87485d6f MW |
872 | #endif |
873 | ||
6c850f3c RS |
874 | #ifdef HAVE_MENUS |
875 | syms_of_xmenu (); | |
876 | #endif /* HAVE_MENUS */ | |
877 | ||
8ba50e1a GV |
878 | #ifdef HAVE_NTGUI |
879 | syms_of_win32term (); | |
880 | syms_of_win32fns (); | |
881 | syms_of_win32faces (); | |
882 | syms_of_win32select (); | |
883 | syms_of_win32menu (); | |
884 | #endif /* HAVE_NTGUI */ | |
885 | ||
f927c5ae JB |
886 | #ifdef SYMS_SYSTEM |
887 | SYMS_SYSTEM; | |
888 | #endif | |
889 | ||
890 | #ifdef SYMS_MACHINE | |
891 | SYMS_MACHINE; | |
892 | #endif | |
893 | ||
894 | keys_of_casefiddle (); | |
895 | keys_of_cmds (); | |
896 | keys_of_buffer (); | |
897 | keys_of_keyboard (); | |
898 | keys_of_keymap (); | |
899 | keys_of_macros (); | |
900 | keys_of_minibuf (); | |
901 | keys_of_window (); | |
5e67fbc2 | 902 | keys_of_frame (); |
f927c5ae JB |
903 | } |
904 | ||
905 | if (!initialized) | |
906 | { | |
e2925360 | 907 | char *file; |
f927c5ae | 908 | /* Handle -l loadup-and-dump, args passed by Makefile. */ |
df6530f8 | 909 | if (argmatch (argv, argc, "-l", "--load", 3, &file, &skip_args)) |
f927c5ae | 910 | Vtop_level = Fcons (intern ("load"), |
e2925360 | 911 | Fcons (build_string (file), Qnil)); |
f927c5ae JB |
912 | #ifdef CANNOT_DUMP |
913 | /* Unless next switch is -nl, load "loadup.el" first thing. */ | |
df6530f8 | 914 | if (!argmatch (argv, argc, "-nl", "--no-loadup", 6, NULL, &skip_args)) |
f927c5ae JB |
915 | Vtop_level = Fcons (intern ("load"), |
916 | Fcons (build_string ("loadup.el"), Qnil)); | |
917 | #endif /* CANNOT_DUMP */ | |
918 | } | |
919 | ||
93572b43 KH |
920 | if (initialized) |
921 | { | |
922 | /* Erase any pre-dump messages in the message log, to avoid confusion */ | |
923 | Lisp_Object old_log_max; | |
924 | old_log_max = Vmessage_log_max; | |
925 | XSETFASTINT (Vmessage_log_max, 0); | |
926 | message_dolog ("", 0, 1); | |
927 | Vmessage_log_max = old_log_max; | |
928 | } | |
929 | ||
f927c5ae JB |
930 | initialized = 1; |
931 | ||
e7536cff RS |
932 | #ifdef LOCALTIME_CACHE |
933 | /* Some versions of localtime have a bug. They cache the value of the time | |
279cc2b8 JB |
934 | zone rather than looking it up every time. Since localtime() is |
935 | called to bolt the undumping time into the undumped emacs, this | |
afe9fae9 RS |
936 | results in localtime ignoring the TZ environment variable. |
937 | This flushes the new TZ value into localtime. */ | |
938 | tzset (); | |
e7536cff | 939 | #endif /* defined (LOCALTIME_CACHE) */ |
279cc2b8 | 940 | |
f927c5ae JB |
941 | /* Enter editor command loop. This never returns. */ |
942 | Frecursive_edit (); | |
943 | /* NOTREACHED */ | |
944 | } | |
945 | \f | |
081bef73 RS |
946 | /* Sort the args so we can find the most important ones |
947 | at the beginning of argv. */ | |
948 | ||
949 | /* First, here's a table of all the standard options. */ | |
950 | ||
951 | struct standard_args | |
952 | { | |
953 | char *name; | |
954 | char *longname; | |
955 | int priority; | |
956 | int nargs; | |
957 | }; | |
958 | ||
959 | struct standard_args standard_args[] = | |
960 | { | |
221cbd7d RS |
961 | { "-version", "--version", 110, 0 }, |
962 | { "-help", "--help", 110, 0 }, | |
081bef73 | 963 | { "-nl", "--no-shared-memory", 100, 0 }, |
2725719a | 964 | #ifdef VMS |
081bef73 | 965 | { "-map", "--map-data", 100, 0 }, |
2725719a | 966 | #endif |
081bef73 RS |
967 | { "-t", "--terminal", 90, 1 }, |
968 | { "-d", "--display", 80, 1 }, | |
969 | { "-display", 0, 80, 1 }, | |
970 | { "-nw", "--no-windows", 70, 0 }, | |
971 | { "-batch", "--batch", 60, 0 }, | |
972 | { "-q", "--no-init-file", 50, 0 }, | |
973 | { "-no-init-file", 0, 50, 0 }, | |
974 | { "-no-site-file", "--no-site-file", 40, 0 }, | |
975 | { "-u", "--user", 30, 1 }, | |
976 | { "-user", 0, 30, 1 }, | |
977 | { "-debug-init", "--debug-init", 20, 0 }, | |
adab4483 KH |
978 | { "-i", "--icon-type", 15, 0 }, |
979 | { "-itype", 0, 15, 0 }, | |
f2bc3538 | 980 | { "-iconic", "--iconic", 15, 0 }, |
081bef73 RS |
981 | { "-bg", "--background-color", 10, 1 }, |
982 | { "-background", 0, 10, 1 }, | |
983 | { "-fg", "--foreground-color", 10, 1 }, | |
984 | { "-foreground", 0, 10, 1 }, | |
985 | { "-bd", "--border-color", 10, 1 }, | |
986 | { "-bw", "--border-width", 10, 1 }, | |
987 | { "-ib", "--internal-border", 10, 1 }, | |
988 | { "-ms", "--mouse-color", 10, 1 }, | |
989 | { "-cr", "--cursor-color", 10, 1 }, | |
990 | { "-fn", "--font", 10, 1 }, | |
991 | { "-font", 0, 10, 1 }, | |
992 | { "-g", "--geometry", 10, 1 }, | |
993 | { "-geometry", 0, 10, 1 }, | |
994 | { "-T", "--title", 10, 1 }, | |
081bef73 RS |
995 | { "-name", "--name", 10, 1 }, |
996 | { "-xrm", "--xrm", 10, 1 }, | |
fcdeb5d9 RS |
997 | { "-r", "--reverse-video", 5, 0 }, |
998 | { "-rv", 0, 5, 0 }, | |
999 | { "-reverse", 0, 5, 0 }, | |
1000 | { "-vb", "--vertical-scroll-bars", 5, 0 }, | |
fcdeb5d9 RS |
1001 | /* These have the same priority as ordinary file name args, |
1002 | so they are not reordered with respect to those. */ | |
4af9e0b3 RS |
1003 | { "-L", "--directory", 0, 1 }, |
1004 | { "-directory", 0, 0, 1 }, | |
fcdeb5d9 RS |
1005 | { "-l", "--load", 0, 1 }, |
1006 | { "-load", 0, 0, 1 }, | |
1007 | { "-f", "--funcall", 0, 1 }, | |
1008 | { "-funcall", 0, 0, 1 }, | |
575985b1 | 1009 | { "-eval", "--eval", 0, 1 }, |
fcdeb5d9 | 1010 | { "-insert", "--insert", 0, 1 }, |
f2bc3538 | 1011 | /* This should be processed after ordinary file name args and the like. */ |
fcdeb5d9 | 1012 | { "-kill", "--kill", -10, 0 }, |
081bef73 RS |
1013 | }; |
1014 | ||
1015 | /* Reorder the elements of ARGV (assumed to have ARGC elements) | |
1016 | so that the highest priority ones come first. | |
1017 | Do not change the order of elements of equal priority. | |
1018 | If an option takes an argument, keep it and its argument together. */ | |
1019 | ||
1020 | static void | |
1021 | sort_args (argc, argv) | |
1022 | int argc; | |
1023 | char **argv; | |
1024 | { | |
1025 | char **new = (char **) xmalloc (sizeof (char *) * argc); | |
1026 | /* For each element of argv, | |
1027 | the corresponding element of options is: | |
1028 | 0 for an option that takes no arguments, | |
1029 | 1 for an option that takes one argument, etc. | |
1030 | -1 for an ordinary non-option argument. */ | |
6dad9359 | 1031 | int *options = (int *) xmalloc (sizeof (int) * argc); |
081bef73 RS |
1032 | int *priority = (int *) xmalloc (sizeof (int) * argc); |
1033 | int to = 1; | |
1034 | int from; | |
1035 | int i; | |
1036 | ||
1037 | /* Categorize all the options, | |
1038 | and figure out which argv elts are option arguments. */ | |
1039 | for (from = 1; from < argc; from++) | |
1040 | { | |
1041 | options[from] = -1; | |
fcdeb5d9 | 1042 | priority[from] = 0; |
081bef73 RS |
1043 | if (argv[from][0] == '-') |
1044 | { | |
1045 | int match, thislen; | |
1046 | char *equals; | |
1047 | ||
1048 | /* Look for a match with a known old-fashioned option. */ | |
1049 | for (i = 0; i < sizeof (standard_args) / sizeof (standard_args[0]); i++) | |
1050 | if (!strcmp (argv[from], standard_args[i].name)) | |
1051 | { | |
1052 | options[from] = standard_args[i].nargs; | |
1053 | priority[from] = standard_args[i].priority; | |
1054 | from += standard_args[i].nargs; | |
1055 | goto done; | |
1056 | } | |
1057 | ||
1058 | /* Look for a match with a known long option. | |
1059 | MATCH is -1 if no match so far, -2 if two or more matches so far, | |
1060 | >= 0 (the table index of the match) if just one match so far. */ | |
1061 | if (argv[from][1] == '-') | |
1062 | { | |
1063 | match = -1; | |
1064 | thislen = strlen (argv[from]); | |
1065 | equals = index (argv[from], '='); | |
1066 | if (equals != 0) | |
1067 | thislen = equals - argv[from]; | |
1068 | ||
f609ef57 KH |
1069 | for (i = 0; |
1070 | i < sizeof (standard_args) / sizeof (standard_args[0]); i++) | |
1071 | if (standard_args[i].longname | |
1072 | && !strncmp (argv[from], standard_args[i].longname, | |
1073 | thislen)) | |
081bef73 RS |
1074 | { |
1075 | if (match == -1) | |
1076 | match = i; | |
1077 | else | |
1078 | match = -2; | |
1079 | } | |
1080 | ||
1081 | /* If we found exactly one match, use that. */ | |
1082 | if (match >= 0) | |
1083 | { | |
1084 | options[from] = standard_args[match].nargs; | |
1085 | priority[from] = standard_args[match].priority; | |
1086 | /* If --OPTION=VALUE syntax is used, | |
1087 | this option uses just one argv element. */ | |
1088 | if (equals != 0) | |
1089 | options[from] = 0; | |
1090 | from += options[from]; | |
1091 | } | |
1092 | } | |
1093 | done: ; | |
1094 | } | |
1095 | } | |
1096 | ||
1097 | /* Copy the arguments, in order of decreasing priority, to NEW. */ | |
1098 | new[0] = argv[0]; | |
1099 | while (to < argc) | |
1100 | { | |
1101 | int best = -1; | |
2c70c992 | 1102 | int best_priority = -9999; |
081bef73 RS |
1103 | |
1104 | /* Find the highest priority remaining option. | |
1105 | If several have equal priority, take the first of them. */ | |
1106 | for (from = 1; from < argc; from++) | |
1107 | { | |
1108 | if (argv[from] != 0 && priority[from] > best_priority) | |
1109 | { | |
1110 | best_priority = priority[from]; | |
1111 | best = from; | |
1112 | } | |
1113 | /* Skip option arguments--they are tied to the options. */ | |
1114 | if (options[from] > 0) | |
1115 | from += options[from]; | |
1116 | } | |
1117 | ||
1118 | if (best < 0) | |
1119 | abort (); | |
1120 | ||
1121 | /* Copy the highest priority remaining option, with its args, to NEW. */ | |
1122 | new[to++] = argv[best]; | |
1123 | for (i = 0; i < options[best]; i++) | |
1124 | new[to++] = argv[best + i + 1]; | |
1125 | ||
1126 | /* Clear out this option in ARGV. */ | |
1127 | argv[best] = 0; | |
1128 | for (i = 0; i < options[best]; i++) | |
1129 | argv[best + i + 1] = 0; | |
1130 | } | |
1131 | ||
6dad9359 | 1132 | bcopy (new, argv, sizeof (char *) * argc); |
081bef73 RS |
1133 | } |
1134 | \f | |
f927c5ae | 1135 | DEFUN ("kill-emacs", Fkill_emacs, Skill_emacs, 0, 1, "P", |
edc8ae07 | 1136 | "Exit the Emacs job and kill it.\n\ |
f927c5ae JB |
1137 | If ARG is an integer, return ARG as the exit program code.\n\ |
1138 | If ARG is a string, stuff it as keyboard input.\n\n\ | |
1139 | The value of `kill-emacs-hook', if not void,\n\ | |
1140 | is a list of functions (of no args),\n\ | |
1141 | all of which are called before Emacs is actually killed.") | |
1142 | (arg) | |
1143 | Lisp_Object arg; | |
1144 | { | |
1145 | Lisp_Object hook, hook1; | |
1146 | int i; | |
1147 | struct gcpro gcpro1; | |
1148 | ||
1149 | GCPRO1 (arg); | |
1150 | ||
1151 | if (feof (stdin)) | |
1152 | arg = Qt; | |
1153 | ||
2447c626 | 1154 | if (!NILP (Vrun_hooks) && !noninteractive) |
f927c5ae JB |
1155 | call1 (Vrun_hooks, intern ("kill-emacs-hook")); |
1156 | ||
f927c5ae JB |
1157 | UNGCPRO; |
1158 | ||
1159 | /* Is it really necessary to do this deassign | |
1160 | when we are going to exit anyway? */ | |
1161 | /* #ifdef VMS | |
1162 | stop_vms_input (); | |
1163 | #endif */ | |
40be253a | 1164 | |
d0068e25 | 1165 | shut_down_emacs (0, 0, STRINGP (arg) ? arg : Qnil); |
40be253a | 1166 | |
58545838 KH |
1167 | /* If we have an auto-save list file, |
1168 | kill it because we are exiting Emacs deliberately (not crashing). | |
1169 | Do it after shut_down_emacs, which does an auto-save. */ | |
1170 | if (STRINGP (Vauto_save_list_file_name)) | |
1171 | unlink (XSTRING (Vauto_save_list_file_name)->data); | |
1172 | ||
55ccc0b3 | 1173 | exit (INTEGERP (arg) ? XINT (arg) |
f927c5ae JB |
1174 | #ifdef VMS |
1175 | : 1 | |
1176 | #else | |
1177 | : 0 | |
1178 | #endif | |
1179 | ); | |
1180 | /* NOTREACHED */ | |
1181 | } | |
40be253a JB |
1182 | |
1183 | ||
1184 | /* Perform an orderly shutdown of Emacs. Autosave any modified | |
1185 | buffers, kill any child processes, clean up the terminal modes (if | |
1186 | we're in the foreground), and other stuff like that. Don't perform | |
1187 | any redisplay; this may be called when Emacs is shutting down in | |
1188 | the background, or after its X connection has died. | |
1189 | ||
1190 | If SIG is a signal number, print a message for it. | |
1191 | ||
1192 | This is called by fatal signal handlers, X protocol error handlers, | |
1193 | and Fkill_emacs. */ | |
f7ab4e3d | 1194 | |
40be253a | 1195 | void |
f7ab4e3d | 1196 | shut_down_emacs (sig, no_x, stuff) |
41423a80 | 1197 | int sig, no_x; |
f7ab4e3d | 1198 | Lisp_Object stuff; |
40be253a | 1199 | { |
829d872b RS |
1200 | /* Prevent running of hooks from now on. */ |
1201 | Vrun_hooks = Qnil; | |
1202 | ||
40be253a JB |
1203 | /* If we are controlling the terminal, reset terminal modes */ |
1204 | #ifdef EMACS_HAVE_TTY_PGRP | |
1205 | { | |
d04d81d2 RS |
1206 | int pgrp = EMACS_GETPGRP (0); |
1207 | ||
40be253a JB |
1208 | int tpgrp; |
1209 | if (EMACS_GET_TTY_PGRP (0, &tpgrp) != -1 | |
5a570e37 | 1210 | && tpgrp == pgrp) |
40be253a JB |
1211 | { |
1212 | fflush (stdout); | |
1213 | reset_sys_modes (); | |
1214 | if (sig && sig != SIGTERM) | |
1215 | fprintf (stderr, "Fatal error (%d).", sig); | |
1216 | } | |
1217 | } | |
1218 | #else | |
1219 | fflush (stdout); | |
1220 | reset_sys_modes (); | |
1221 | #endif | |
1222 | ||
f7ab4e3d RS |
1223 | stuff_buffered_input (stuff); |
1224 | ||
40be253a JB |
1225 | kill_buffer_processes (Qnil); |
1226 | Fdo_auto_save (Qt, Qnil); | |
1227 | ||
1228 | #ifdef CLASH_DETECTION | |
1229 | unlock_all_files (); | |
1230 | #endif | |
1231 | ||
1232 | #ifdef VMS | |
1233 | kill_vms_processes (); | |
1234 | #endif | |
1235 | ||
5e7f8733 | 1236 | #if 0 /* This triggers a bug in XCloseDisplay and is not needed. */ |
41423a80 | 1237 | #ifdef HAVE_X_WINDOWS |
f7511647 RS |
1238 | /* It's not safe to call intern here. Maybe we are crashing. */ |
1239 | if (!noninteractive && SYMBOLP (Vwindow_system) | |
1240 | && XSYMBOL (Vwindow_system)->name->size == 1 | |
1241 | && XSYMBOL (Vwindow_system)->name->data[0] == 'x' | |
1242 | && ! no_x) | |
41423a80 RS |
1243 | Fx_close_current_connection (); |
1244 | #endif /* HAVE_X_WINDOWS */ | |
5e7f8733 | 1245 | #endif |
41423a80 | 1246 | |
40be253a JB |
1247 | #ifdef SIGIO |
1248 | /* There is a tendency for a SIGIO signal to arrive within exit, | |
1249 | and cause a SIGHUP because the input descriptor is already closed. */ | |
1250 | unrequest_sigio (); | |
1251 | signal (SIGIO, SIG_IGN); | |
1252 | #endif | |
1253 | } | |
1254 | ||
1255 | ||
f927c5ae JB |
1256 | \f |
1257 | #ifndef CANNOT_DUMP | |
f927c5ae JB |
1258 | |
1259 | #ifdef HAVE_SHM | |
1260 | ||
1261 | DEFUN ("dump-emacs-data", Fdump_emacs_data, Sdump_emacs_data, 1, 1, 0, | |
1262 | "Dump current state of Emacs into data file FILENAME.\n\ | |
1263 | This function exists on systems that use HAVE_SHM.") | |
1264 | (intoname) | |
1265 | Lisp_Object intoname; | |
1266 | { | |
55697f5b | 1267 | extern char my_edata[]; |
f927c5ae | 1268 | Lisp_Object tem; |
f927c5ae JB |
1269 | |
1270 | CHECK_STRING (intoname, 0); | |
1271 | intoname = Fexpand_file_name (intoname, Qnil); | |
1272 | ||
1273 | tem = Vpurify_flag; | |
1274 | Vpurify_flag = Qnil; | |
1275 | ||
1276 | fflush (stdout); | |
1277 | /* Tell malloc where start of impure now is */ | |
1278 | /* Also arrange for warnings when nearly out of space. */ | |
1279 | #ifndef SYSTEM_MALLOC | |
1090a161 | 1280 | memory_warnings (my_edata, malloc_warning); |
f927c5ae JB |
1281 | #endif |
1282 | map_out_data (XSTRING (intoname)->data); | |
1283 | ||
1284 | Vpurify_flag = tem; | |
1285 | ||
1286 | return Qnil; | |
1287 | } | |
1288 | ||
1289 | #else /* not HAVE_SHM */ | |
1290 | ||
1291 | DEFUN ("dump-emacs", Fdump_emacs, Sdump_emacs, 2, 2, 0, | |
1292 | "Dump current state of Emacs into executable file FILENAME.\n\ | |
1293 | Take symbols from SYMFILE (presumably the file you executed to run Emacs).\n\ | |
1294 | This is used in the file `loadup.el' when building Emacs.\n\ | |
1295 | \n\ | |
1296 | Bind `command-line-processed' to nil before dumping,\n\ | |
1297 | if you want the dumped Emacs to process its command line\n\ | |
1298 | and announce itself normally when it is run.") | |
1299 | (intoname, symname) | |
1300 | Lisp_Object intoname, symname; | |
1301 | { | |
55697f5b | 1302 | extern char my_edata[]; |
f927c5ae | 1303 | Lisp_Object tem; |
f927c5ae JB |
1304 | |
1305 | CHECK_STRING (intoname, 0); | |
1306 | intoname = Fexpand_file_name (intoname, Qnil); | |
2447c626 | 1307 | if (!NILP (symname)) |
f927c5ae JB |
1308 | { |
1309 | CHECK_STRING (symname, 0); | |
1310 | if (XSTRING (symname)->size) | |
1311 | symname = Fexpand_file_name (symname, Qnil); | |
1312 | } | |
1313 | ||
1314 | tem = Vpurify_flag; | |
1315 | Vpurify_flag = Qnil; | |
1316 | ||
1317 | fflush (stdout); | |
1318 | #ifdef VMS | |
1319 | mapout_data (XSTRING (intoname)->data); | |
1320 | #else | |
1321 | /* Tell malloc where start of impure now is */ | |
1322 | /* Also arrange for warnings when nearly out of space. */ | |
1323 | #ifndef SYSTEM_MALLOC | |
cc5f52cb RS |
1324 | #ifndef WINDOWSNT |
1325 | /* On Windows, this was done before dumping, and that once suffices. | |
1326 | Meanwhile, my_edata is not valid on Windows. */ | |
cb37cf78 | 1327 | memory_warnings (my_edata, malloc_warning); |
cc5f52cb | 1328 | #endif /* not WINDOWSNT */ |
f927c5ae JB |
1329 | #endif |
1330 | unexec (XSTRING (intoname)->data, | |
c91e1ad0 | 1331 | !NILP (symname) ? XSTRING (symname)->data : 0, my_edata, 0, 0); |
f927c5ae JB |
1332 | #endif /* not VMS */ |
1333 | ||
1334 | Vpurify_flag = tem; | |
1335 | ||
1336 | return Qnil; | |
1337 | } | |
1338 | ||
1339 | #endif /* not HAVE_SHM */ | |
1340 | ||
1341 | #endif /* not CANNOT_DUMP */ | |
1342 | \f | |
4b163808 | 1343 | #ifndef SEPCHAR |
f927c5ae JB |
1344 | #define SEPCHAR ':' |
1345 | #endif | |
1346 | ||
1347 | Lisp_Object | |
1348 | decode_env_path (evarname, defalt) | |
1349 | char *evarname, *defalt; | |
1350 | { | |
1351 | register char *path, *p; | |
f927c5ae JB |
1352 | |
1353 | Lisp_Object lpath; | |
1354 | ||
2447c626 JB |
1355 | /* It's okay to use getenv here, because this function is only used |
1356 | to initialize variables when Emacs starts up, and isn't called | |
1357 | after that. */ | |
e065a56e JB |
1358 | if (evarname != 0) |
1359 | path = (char *) getenv (evarname); | |
1360 | else | |
1361 | path = 0; | |
f927c5ae JB |
1362 | if (!path) |
1363 | path = defalt; | |
1364 | lpath = Qnil; | |
1365 | while (1) | |
1366 | { | |
1367 | p = index (path, SEPCHAR); | |
1368 | if (!p) p = path + strlen (path); | |
d70fbcca RS |
1369 | lpath = Fcons (p - path ? make_string (path, p - path) |
1370 | : build_string ("."), | |
f927c5ae JB |
1371 | lpath); |
1372 | if (*p) | |
1373 | path = p + 1; | |
1374 | else | |
1375 | break; | |
1376 | } | |
1377 | return Fnreverse (lpath); | |
1378 | } | |
1379 | ||
1380 | syms_of_emacs () | |
1381 | { | |
83591e66 | 1382 | #ifndef CANNOT_DUMP |
f927c5ae JB |
1383 | #ifdef HAVE_SHM |
1384 | defsubr (&Sdump_emacs_data); | |
1385 | #else | |
1386 | defsubr (&Sdump_emacs); | |
83591e66 | 1387 | #endif |
f927c5ae JB |
1388 | #endif |
1389 | ||
1390 | defsubr (&Skill_emacs); | |
1391 | ||
59653951 | 1392 | defsubr (&Sinvocation_name); |
ace40a69 | 1393 | defsubr (&Sinvocation_directory); |
59653951 | 1394 | |
f927c5ae JB |
1395 | DEFVAR_LISP ("command-line-args", &Vcommand_line_args, |
1396 | "Args passed by shell to Emacs, as a list of strings."); | |
1397 | ||
1398 | DEFVAR_LISP ("system-type", &Vsystem_type, | |
1399 | "Value is symbol indicating type of operating system you are using."); | |
1400 | Vsystem_type = intern (SYSTEM_TYPE); | |
1401 | ||
271c7b7c RS |
1402 | DEFVAR_LISP ("system-configuration", &Vsystem_configuration, |
1403 | "Value is string indicating configuration Emacs was built for."); | |
f7511647 | 1404 | Vsystem_configuration = build_string (EMACS_CONFIGURATION); |
271c7b7c | 1405 | |
f0fc0b1a KH |
1406 | DEFVAR_LISP ("system-configuration-options", &Vsystem_configuration_options, |
1407 | "String containing the configuration options Emacs was built with."); | |
1408 | Vsystem_configuration_options = build_string (EMACS_CONFIG_OPTIONS); | |
1409 | ||
f927c5ae JB |
1410 | DEFVAR_BOOL ("noninteractive", &noninteractive1, |
1411 | "Non-nil means Emacs is running without interactive terminal."); | |
e5d77022 | 1412 | |
e5d77022 | 1413 | DEFVAR_LISP ("kill-emacs-hook", &Vkill_emacs_hook, |
edc8ae07 JB |
1414 | "Hook to be run whenever kill-emacs is called.\n\ |
1415 | Since kill-emacs may be invoked when the terminal is disconnected (or\n\ | |
1416 | in other similar situations), functions placed on this hook should not\n\ | |
9f232a5d RS |
1417 | expect to be able to interact with the user. To ask for confirmation,\n\ |
1418 | see `kill-emacs-query-functions' instead."); | |
edc8ae07 | 1419 | Vkill_emacs_hook = Qnil; |
3005da00 RS |
1420 | |
1421 | DEFVAR_INT ("emacs-priority", &emacs_priority, | |
1422 | "Priority for Emacs to run at.\n\ | |
1423 | This value is effective only if set before Emacs is dumped,\n\ | |
1424 | and only if the Emacs executable is installed with setuid to permit\n\ | |
621ecf99 | 1425 | it to change priority. (Emacs sets its uid back to the real uid.)\n\ |
a422068f | 1426 | Currently, you need to define SET_EMACS_PRIORITY in `config.h'\n\ |
ce305b11 | 1427 | before you compile Emacs, to enable the code for this feature."); |
3005da00 | 1428 | emacs_priority = 0; |
59653951 | 1429 | |
f67de86f RS |
1430 | DEFVAR_LISP ("invocation-name", &Vinvocation_name, |
1431 | "The program name that was used to run Emacs.\n\ | |
1432 | Any directory names are omitted."); | |
1433 | ||
1434 | DEFVAR_LISP ("invocation-directory", &Vinvocation_directory, | |
1435 | "The directory in which the Emacs executable was found, to run it.\n\ | |
1436 | The value is nil if that directory's name is not known."); | |
1437 | ||
1438 | DEFVAR_LISP ("installation-directory", &Vinstallation_directory, | |
1439 | "A directory within which to look for the `lib-src' and `etc' directories.\n\ | |
1440 | This is non-nil when we can't find those directories in their standard\n\ | |
1441 | installed locations, but we can find them\n\ | |
1442 | near where the Emacs executable was found."); | |
07f4d123 | 1443 | Vinstallation_directory = Qnil; |
f927c5ae | 1444 | } |