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 | |
5a7670bf RS |
18 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
19 | Boston, MA 02111-1307, USA. */ | |
f927c5ae JB |
20 | |
21 | ||
22 | #include <signal.h> | |
23 | #include <errno.h> | |
24 | ||
18160b98 | 25 | #include <config.h> |
f927c5ae JB |
26 | #include <stdio.h> |
27 | ||
28 | #include <sys/types.h> | |
29 | #include <sys/file.h> | |
30 | ||
31 | #ifdef VMS | |
32 | #include <ssdef.h> | |
33 | #endif | |
34 | ||
f927c5ae JB |
35 | #ifdef BSD |
36 | #include <sys/ioctl.h> | |
37 | #endif | |
38 | ||
f927c5ae JB |
39 | #include "lisp.h" |
40 | #include "commands.h" | |
bef79ee4 | 41 | #include "intervals.h" |
f927c5ae | 42 | |
edc8ae07 | 43 | #include "systty.h" |
6c3a4e9d | 44 | #include "blockinput.h" |
8090eb09 | 45 | #include "syssignal.h" |
6c362a8b | 46 | #include "process.h" |
a41f8bed | 47 | |
f927c5ae JB |
48 | #ifndef O_RDWR |
49 | #define O_RDWR 2 | |
50 | #endif | |
51 | ||
43165242 | 52 | extern void malloc_warning (); |
0269dedb | 53 | extern void set_time_zone_rule (); |
43165242 KH |
54 | extern char *index (); |
55 | extern char *strerror (); | |
56 | ||
f927c5ae JB |
57 | /* Command line args from shell, as list of strings */ |
58 | Lisp_Object Vcommand_line_args; | |
59 | ||
59653951 JB |
60 | /* The name under which Emacs was invoked, with any leading directory |
61 | names discarded. */ | |
62 | Lisp_Object Vinvocation_name; | |
63 | ||
ace40a69 RS |
64 | /* The directory name from which Emacs was invoked. */ |
65 | Lisp_Object Vinvocation_directory; | |
66 | ||
07f4d123 RS |
67 | /* The directory name in which to find subdirs such as lisp and etc. |
68 | nil means get them only from PATH_LOADSEARCH. */ | |
69 | Lisp_Object Vinstallation_directory; | |
70 | ||
e5d77022 JB |
71 | /* Hook run by `kill-emacs' before it does really anything. */ |
72 | Lisp_Object Vkill_emacs_hook; | |
73 | ||
f927c5ae JB |
74 | /* Set nonzero after Emacs has started up the first time. |
75 | Prevents reinitialization of the Lisp world and keymaps | |
76 | on subsequent starts. */ | |
77 | int initialized; | |
78 | ||
271c7b7c | 79 | /* Variable whose value is symbol giving operating system type. */ |
f927c5ae | 80 | Lisp_Object Vsystem_type; |
271c7b7c RS |
81 | |
82 | /* Variable whose value is string giving configuration built for. */ | |
83 | Lisp_Object Vsystem_configuration; | |
f0fc0b1a KH |
84 | |
85 | /* Variable whose value is string giving configuration options, | |
86 | for use when reporting bugs. */ | |
87 | Lisp_Object Vsystem_configuration_options; | |
88 | ||
f927c5ae JB |
89 | /* If non-zero, emacs should not attempt to use an window-specific code, |
90 | but instead should use the virtual terminal under which it was started */ | |
91 | int inhibit_window_system; | |
92 | ||
5aa7f46a JB |
93 | /* If nonzero, set Emacs to run at this priority. This is also used |
94 | in child_setup and sys_suspend to make sure subshells run at normal | |
95 | priority; Those functions have their own extern declaration. */ | |
3005da00 RS |
96 | int emacs_priority; |
97 | ||
7074fde6 FP |
98 | /* If non-zero a filter or a sentinel is running. Tested to save the match |
99 | data on the first attempt to change it inside asynchronous code. */ | |
100 | int running_asynch_code; | |
101 | ||
647cec74 | 102 | #ifdef BSD_PGRPS |
9ae8f997 JB |
103 | /* See sysdep.c. */ |
104 | extern int inherited_pgroup; | |
105 | #endif | |
106 | ||
f927c5ae JB |
107 | #ifdef HAVE_X_WINDOWS |
108 | /* If non-zero, -d was specified, meaning we're using some window system. */ | |
109 | int display_arg; | |
110 | #endif | |
111 | ||
112 | /* An address near the bottom of the stack. | |
113 | Tells GC how to save a copy of the stack. */ | |
114 | char *stack_bottom; | |
115 | ||
8ba50e1a | 116 | #ifdef HAVE_WINDOW_SYSTEM |
f927c5ae | 117 | extern Lisp_Object Vwindow_system; |
8ba50e1a | 118 | #endif /* HAVE_WINDOW_SYSTEM */ |
f927c5ae | 119 | |
1090a161 RS |
120 | extern Lisp_Object Vauto_save_list_file_name; |
121 | ||
f927c5ae JB |
122 | #ifdef USG_SHARED_LIBRARIES |
123 | /* If nonzero, this is the place to put the end of the writable segment | |
124 | at startup. */ | |
125 | ||
126 | unsigned int bss_end = 0; | |
127 | #endif | |
128 | ||
129 | /* Nonzero means running Emacs without interactive terminal. */ | |
130 | ||
131 | int noninteractive; | |
132 | ||
133 | /* Value of Lisp variable `noninteractive'. | |
134 | Normally same as C variable `noninteractive' | |
135 | but nothing terrible happens if user sets this one. */ | |
136 | ||
137 | int noninteractive1; | |
e29f86e4 RS |
138 | |
139 | /* Save argv and argc. */ | |
140 | char **initial_argv; | |
141 | int initial_argc; | |
081bef73 RS |
142 | |
143 | static void sort_args (); | |
f927c5ae JB |
144 | \f |
145 | /* Signal code for the fatal signal that was received */ | |
146 | int fatal_error_code; | |
147 | ||
148 | /* Nonzero if handling a fatal error already */ | |
149 | int fatal_error_in_progress; | |
150 | ||
151 | /* Handle bus errors, illegal instruction, etc. */ | |
2447c626 | 152 | SIGTYPE |
f927c5ae JB |
153 | fatal_error_signal (sig) |
154 | int sig; | |
155 | { | |
f927c5ae JB |
156 | fatal_error_code = sig; |
157 | signal (sig, SIG_DFL); | |
158 | ||
061b7f94 RS |
159 | TOTALLY_UNBLOCK_INPUT; |
160 | ||
f927c5ae | 161 | /* If fatal error occurs in code below, avoid infinite recursion. */ |
8090eb09 JB |
162 | if (! fatal_error_in_progress) |
163 | { | |
164 | fatal_error_in_progress = 1; | |
f927c5ae | 165 | |
f7ab4e3d | 166 | shut_down_emacs (sig, 0, Qnil); |
8090eb09 | 167 | } |
f927c5ae JB |
168 | |
169 | #ifdef VMS | |
f927c5ae JB |
170 | LIB$STOP (SS$_ABORT); |
171 | #else | |
8090eb09 JB |
172 | /* Signal the same code; this time it will really be fatal. |
173 | Remember that since we're in a signal handler, the signal we're | |
174 | going to send is probably blocked, so we have to unblock it if we | |
175 | want to really receive it. */ | |
29b89fe0 | 176 | #ifndef MSDOS |
a90538cb | 177 | sigunblock (sigmask (fatal_error_code)); |
29b89fe0 | 178 | #endif |
f927c5ae JB |
179 | kill (getpid (), fatal_error_code); |
180 | #endif /* not VMS */ | |
181 | } | |
271c7b7c RS |
182 | |
183 | #ifdef SIGDANGER | |
184 | ||
16c323ee | 185 | /* Handler for SIGDANGER. */ |
271c7b7c RS |
186 | SIGTYPE |
187 | memory_warning_signal (sig) | |
188 | int sig; | |
189 | { | |
190 | signal (sig, memory_warning_signal); | |
191 | ||
192 | malloc_warning ("Operating system warns that virtual memory is running low.\n"); | |
55796183 RS |
193 | |
194 | /* It might be unsafe to call do_auto_save now. */ | |
195 | force_auto_save_soon (); | |
271c7b7c RS |
196 | } |
197 | #endif | |
f927c5ae JB |
198 | \f |
199 | /* Code for dealing with Lisp access to the Unix command line */ | |
200 | ||
201 | static | |
202 | init_cmdargs (argc, argv, skip_args) | |
203 | int argc; | |
204 | char **argv; | |
205 | int skip_args; | |
206 | { | |
207 | register int i; | |
07f4d123 | 208 | Lisp_Object name, dir; |
f927c5ae | 209 | |
e29f86e4 RS |
210 | initial_argv = argv; |
211 | initial_argc = argc; | |
212 | ||
cb421be8 | 213 | Vinvocation_name = Ffile_name_nondirectory (build_string (argv[0])); |
ace40a69 RS |
214 | Vinvocation_directory = Ffile_name_directory (build_string (argv[0])); |
215 | /* If we got no directory in argv[0], search PATH to find where | |
216 | Emacs actually came from. */ | |
217 | if (NILP (Vinvocation_directory)) | |
218 | { | |
219 | Lisp_Object found; | |
220 | int yes = openp (Vexec_path, Vinvocation_name, | |
6c362a8b | 221 | EXEC_SUFFIXES, &found, 1); |
e443f843 | 222 | if (yes == 1) |
ace40a69 RS |
223 | Vinvocation_directory = Ffile_name_directory (found); |
224 | } | |
59653951 | 225 | |
4133b300 RS |
226 | if (!NILP (Vinvocation_directory) |
227 | && NILP (Ffile_name_absolute_p (Vinvocation_directory))) | |
228 | /* Emacs was started with relative path, like ./emacs */ | |
229 | Vinvocation_directory = Fexpand_file_name (Vinvocation_directory, Qnil); | |
230 | ||
07f4d123 RS |
231 | Vinstallation_directory = Qnil; |
232 | ||
233 | if (!NILP (Vinvocation_directory)) | |
234 | { | |
235 | dir = Vinvocation_directory; | |
236 | name = Fexpand_file_name (Vinvocation_name, dir); | |
237 | while (1) | |
238 | { | |
f5ab9736 | 239 | Lisp_Object tem, lib_src_exists; |
07f4d123 RS |
240 | Lisp_Object etc_exists, info_exists; |
241 | ||
f5ab9736 RS |
242 | /* See if dir contains subdirs for use by Emacs. |
243 | Check for the ones that would exist in a build directory, | |
244 | not including lisp and info. */ | |
245 | tem = Fexpand_file_name (build_string ("lib-src"), dir); | |
246 | lib_src_exists = Ffile_exists_p (tem); | |
247 | if (!NILP (lib_src_exists)) | |
07f4d123 | 248 | { |
f5ab9736 RS |
249 | tem = Fexpand_file_name (build_string ("etc"), dir); |
250 | etc_exists = Ffile_exists_p (tem); | |
251 | if (!NILP (etc_exists)) | |
07f4d123 | 252 | { |
f5ab9736 RS |
253 | Vinstallation_directory |
254 | = Ffile_name_as_directory (dir); | |
255 | break; | |
07f4d123 RS |
256 | } |
257 | } | |
258 | ||
259 | /* See if dir's parent contains those subdirs. */ | |
f5ab9736 RS |
260 | tem = Fexpand_file_name (build_string ("../lib-src"), dir); |
261 | lib_src_exists = Ffile_exists_p (tem); | |
262 | if (!NILP (lib_src_exists)) | |
07f4d123 | 263 | { |
f5ab9736 RS |
264 | tem = Fexpand_file_name (build_string ("../etc"), dir); |
265 | etc_exists = Ffile_exists_p (tem); | |
266 | if (!NILP (etc_exists)) | |
07f4d123 | 267 | { |
f5ab9736 RS |
268 | tem = Fexpand_file_name (build_string (".."), dir); |
269 | Vinstallation_directory | |
270 | = Ffile_name_as_directory (tem); | |
271 | break; | |
07f4d123 RS |
272 | } |
273 | } | |
274 | ||
275 | /* If the Emacs executable is actually a link, | |
276 | next try the dir that the link points into. */ | |
277 | tem = Ffile_symlink_p (name); | |
278 | if (!NILP (tem)) | |
279 | { | |
260ec24d | 280 | name = Fexpand_file_name (tem, dir); |
07f4d123 RS |
281 | dir = Ffile_name_directory (name); |
282 | } | |
283 | else | |
284 | break; | |
285 | } | |
286 | } | |
287 | ||
f927c5ae JB |
288 | Vcommand_line_args = Qnil; |
289 | ||
290 | for (i = argc - 1; i >= 0; i--) | |
291 | { | |
292 | if (i == 0 || i > skip_args) | |
293 | Vcommand_line_args | |
294 | = Fcons (build_string (argv[i]), Vcommand_line_args); | |
295 | } | |
296 | } | |
59653951 JB |
297 | |
298 | DEFUN ("invocation-name", Finvocation_name, Sinvocation_name, 0, 0, 0, | |
299 | "Return the program name that was used to run Emacs.\n\ | |
300 | Any directory names are omitted.") | |
301 | () | |
302 | { | |
303 | return Fcopy_sequence (Vinvocation_name); | |
304 | } | |
305 | ||
ace40a69 RS |
306 | DEFUN ("invocation-directory", Finvocation_directory, Sinvocation_directory, |
307 | 0, 0, 0, | |
308 | "Return the directory name in which the Emacs executable was located") | |
309 | () | |
310 | { | |
311 | return Fcopy_sequence (Vinvocation_directory); | |
312 | } | |
313 | ||
f927c5ae JB |
314 | \f |
315 | #ifdef VMS | |
316 | #ifdef LINK_CRTL_SHARE | |
34035df3 | 317 | #ifdef SHARABLE_LIB_BUG |
f927c5ae | 318 | extern noshare char **environ; |
34035df3 | 319 | #endif /* SHARABLE_LIB_BUG */ |
f927c5ae JB |
320 | #endif /* LINK_CRTL_SHARE */ |
321 | #endif /* VMS */ | |
322 | ||
0269dedb RS |
323 | #ifdef HAVE_TZSET |
324 | /* A valid but unlikely value for the TZ environment value. | |
325 | It is OK (though a bit slower) if the user actually chooses this value. */ | |
326 | static char dump_tz[] = "UtC0"; | |
327 | #endif | |
328 | ||
a90538cb | 329 | #ifndef ORDINARY_LINK |
efd241cc RS |
330 | /* We don't include crtbegin.o and crtend.o in the link, |
331 | so these functions and variables might be missed. | |
332 | Provide dummy definitions to avoid error. | |
333 | (We don't have any real constructors or destructors.) */ | |
334 | #ifdef __GNUC__ | |
46e65b73 | 335 | #ifndef GCC_CTORS_IN_LIBC |
c83a7064 | 336 | __do_global_ctors () |
efd241cc | 337 | {} |
c83a7064 RS |
338 | __do_global_ctors_aux () |
339 | {} | |
33143604 RS |
340 | __do_global_dtors () |
341 | {} | |
64c1864a RS |
342 | /* Linux has a bug in its library; avoid an error. */ |
343 | #ifndef LINUX | |
c83a7064 | 344 | char * __CTOR_LIST__[2] = { (char *) (-1), 0 }; |
64c1864a | 345 | #endif |
c83a7064 | 346 | char * __DTOR_LIST__[2] = { (char *) (-1), 0 }; |
46e65b73 | 347 | #endif /* GCC_CTORS_IN_LIBC */ |
c83a7064 | 348 | __main () |
efd241cc | 349 | {} |
efd241cc | 350 | #endif /* __GNUC__ */ |
a90538cb | 351 | #endif /* ORDINARY_LINK */ |
efd241cc | 352 | |
e2925360 KH |
353 | /* Test whether the next argument in ARGV matches SSTR or a prefix of |
354 | LSTR (at least MINLEN characters). If so, then if VALPTR is non-null | |
355 | (the argument is supposed to have a value) store in *VALPTR either | |
356 | the next argument or the portion of this one after the equal sign. | |
357 | ARGV is read starting at position *SKIPPTR; this index is advanced | |
358 | by the number of arguments used. | |
359 | ||
360 | Too bad we can't just use getopt for all of this, but we don't have | |
361 | enough information to do it right. */ | |
081bef73 | 362 | |
e2925360 | 363 | static int |
df6530f8 | 364 | argmatch (argv, argc, sstr, lstr, minlen, valptr, skipptr) |
e2925360 | 365 | char **argv; |
df6530f8 | 366 | int argc; |
e2925360 KH |
367 | char *sstr; |
368 | char *lstr; | |
369 | int minlen; | |
370 | char **valptr; | |
371 | int *skipptr; | |
372 | { | |
373 | char *p; | |
374 | int arglen; | |
df6530f8 RS |
375 | char *arg; |
376 | ||
377 | /* Don't access argv[argc]; give up in advance. */ | |
378 | if (argc <= *skipptr + 1) | |
379 | return 0; | |
380 | ||
381 | arg = argv[*skipptr+1]; | |
e2925360 KH |
382 | if (arg == NULL) |
383 | return 0; | |
384 | if (strcmp (arg, sstr) == 0) | |
385 | { | |
386 | if (valptr != NULL) | |
387 | { | |
388 | *valptr = argv[*skipptr+2]; | |
389 | *skipptr += 2; | |
390 | } | |
391 | else | |
392 | *skipptr += 1; | |
393 | return 1; | |
394 | } | |
395 | arglen = (valptr != NULL && (p = index (arg, '=')) != NULL | |
396 | ? p - arg : strlen (arg)); | |
c03e1113 | 397 | if (lstr == 0 || arglen < minlen || strncmp (arg, lstr, arglen) != 0) |
e2925360 KH |
398 | return 0; |
399 | else if (valptr == NULL) | |
400 | { | |
401 | *skipptr += 1; | |
402 | return 1; | |
403 | } | |
404 | else if (p != NULL) | |
405 | { | |
406 | *valptr = p+1; | |
407 | *skipptr += 1; | |
408 | return 1; | |
409 | } | |
410 | else if (argv[*skipptr+2] != NULL) | |
411 | { | |
412 | *valptr = argv[*skipptr+2]; | |
413 | *skipptr += 2; | |
414 | return 1; | |
415 | } | |
416 | else | |
417 | { | |
418 | return 0; | |
419 | } | |
420 | } | |
421 | ||
f927c5ae JB |
422 | /* ARGSUSED */ |
423 | main (argc, argv, envp) | |
424 | int argc; | |
425 | char **argv; | |
426 | char **envp; | |
427 | { | |
428 | char stack_bottom_variable; | |
429 | int skip_args = 0; | |
430 | extern int errno; | |
431 | extern sys_nerr; | |
f927c5ae | 432 | |
6000fe37 RS |
433 | #ifdef LINUX_SBRK_BUG |
434 | __sbrk (1); | |
435 | #endif | |
436 | ||
081bef73 RS |
437 | sort_args (argc, argv); |
438 | ||
1702afef RS |
439 | if (argmatch (argv, argc, "-version", "--version", 3, NULL, &skip_args)) |
440 | { | |
441 | Lisp_Object tem; | |
442 | tem = Fsymbol_value (intern ("emacs-version")); | |
443 | if (!STRINGP (tem)) | |
444 | { | |
445 | fprintf (stderr, "Invalid value of `emacs-version'\n"); | |
446 | exit (1); | |
447 | } | |
448 | else | |
449 | { | |
450 | printf ("%s\n", XSTRING (tem)->data); | |
451 | exit (0); | |
452 | } | |
453 | } | |
454 | ||
f927c5ae JB |
455 | /* Map in shared memory, if we are using that. */ |
456 | #ifdef HAVE_SHM | |
df6530f8 | 457 | if (argmatch (argv, argc, "-nl", "--no-shared-memory", 6, NULL, &skip_args)) |
f927c5ae JB |
458 | { |
459 | map_in_data (0); | |
460 | /* The shared memory was just restored, which clobbered this. */ | |
461 | skip_args = 1; | |
462 | } | |
463 | else | |
464 | { | |
465 | map_in_data (1); | |
466 | /* The shared memory was just restored, which clobbered this. */ | |
467 | skip_args = 0; | |
468 | } | |
469 | #endif | |
470 | ||
19a36ec6 | 471 | #ifdef NeXT |
b9df9faa KH |
472 | { |
473 | extern int malloc_cookie; | |
474 | /* This helps out unexnext.c. */ | |
475 | if (initialized) | |
476 | if (malloc_jumpstart (malloc_cookie) != 0) | |
477 | printf ("malloc jumpstart failed!\n"); | |
478 | } | |
19a36ec6 RS |
479 | #endif /* NeXT */ |
480 | ||
f927c5ae JB |
481 | #ifdef VMS |
482 | /* If -map specified, map the data file in */ | |
e2925360 KH |
483 | { |
484 | char *file; | |
df6530f8 | 485 | if (argmatch (argv, argc, "-map", "--map-data", 3, &mapin_file, &skip_args)) |
e2925360 KH |
486 | mapin_data (file); |
487 | } | |
f927c5ae JB |
488 | |
489 | #ifdef LINK_CRTL_SHARE | |
34035df3 | 490 | #ifdef SHARABLE_LIB_BUG |
f927c5ae JB |
491 | /* Bletcherous shared libraries! */ |
492 | if (!stdin) | |
493 | stdin = fdopen (0, "r"); | |
494 | if (!stdout) | |
495 | stdout = fdopen (1, "w"); | |
496 | if (!stderr) | |
497 | stderr = fdopen (2, "w"); | |
498 | if (!environ) | |
499 | environ = envp; | |
34035df3 | 500 | #endif /* SHARABLE_LIB_BUG */ |
f927c5ae JB |
501 | #endif /* LINK_CRTL_SHARE */ |
502 | #endif /* VMS */ | |
503 | ||
504 | /* Record (approximately) where the stack begins. */ | |
505 | stack_bottom = &stack_bottom_variable; | |
506 | ||
507 | #ifdef RUN_TIME_REMAP | |
508 | if (initialized) | |
509 | run_time_remap (argv[0]); | |
510 | #endif | |
511 | ||
512 | #ifdef USG_SHARED_LIBRARIES | |
513 | if (bss_end) | |
1d233b80 | 514 | brk ((void *)bss_end); |
f927c5ae JB |
515 | #endif |
516 | ||
517 | clearerr (stdin); | |
9ae8f997 | 518 | |
f927c5ae JB |
519 | #ifndef SYSTEM_MALLOC |
520 | if (! initialized) | |
9ac0d9e0 JB |
521 | { |
522 | /* Arrange to get warning messages as memory fills up. */ | |
523 | memory_warnings (0, malloc_warning); | |
524 | ||
525 | /* Arrange to disable interrupt input while malloc and friends are | |
526 | running. */ | |
527 | uninterrupt_malloc (); | |
528 | } | |
f927c5ae JB |
529 | #endif /* not SYSTEM_MALLOC */ |
530 | ||
29b89fe0 RS |
531 | #ifdef MSDOS |
532 | /* We do all file input/output as binary files. When we need to translate | |
533 | newlines, we do that manually. */ | |
534 | _fmode = O_BINARY; | |
535 | (stdin)->_flag &= ~_IOTEXT; | |
536 | (stdout)->_flag &= ~_IOTEXT; | |
537 | (stderr)->_flag &= ~_IOTEXT; | |
538 | #endif /* MSDOS */ | |
539 | ||
a422068f | 540 | #ifdef SET_EMACS_PRIORITY |
3005da00 | 541 | if (emacs_priority) |
5aa7f46a | 542 | nice (emacs_priority); |
f927c5ae | 543 | setuid (getuid ()); |
a422068f | 544 | #endif /* SET_EMACS_PRIORITY */ |
f927c5ae | 545 | |
d8b3a65d | 546 | #ifdef EXTRA_INITIALIZE |
a9260219 | 547 | EXTRA_INITIALIZE; |
d8b3a65d RS |
548 | #endif |
549 | ||
f927c5ae JB |
550 | inhibit_window_system = 0; |
551 | ||
4fc0b45b | 552 | /* Handle the -t switch, which specifies filename to use as terminal */ |
e2925360 KH |
553 | { |
554 | char *term; | |
df6530f8 | 555 | if (argmatch (argv, argc, "-t", "--terminal", 4, &term, &skip_args)) |
e2925360 KH |
556 | { |
557 | int result; | |
558 | close (0); | |
559 | close (1); | |
560 | result = open (term, O_RDWR, 2 ); | |
561 | if (result < 0) | |
562 | { | |
563 | char *errstring = strerror (errno); | |
564 | fprintf (stderr, "emacs: %s: %s\n", term, errstring); | |
565 | exit (1); | |
566 | } | |
567 | dup (0); | |
568 | if (! isatty (0)) | |
569 | { | |
570 | fprintf (stderr, "emacs: %s: not a tty\n", term); | |
571 | exit (1); | |
572 | } | |
573 | fprintf (stderr, "Using %s\n", term); | |
8ba50e1a | 574 | #ifdef HAVE_WINDOW_SYSTEM |
e2925360 | 575 | inhibit_window_system = 1; /* -t => -nw */ |
f927c5ae | 576 | #endif |
e2925360 KH |
577 | } |
578 | } | |
df6530f8 | 579 | if (argmatch (argv, argc, "-nw", "--no-windows", 6, NULL, &skip_args)) |
e2925360 | 580 | inhibit_window_system = 1; |
f927c5ae | 581 | |
e2925360 | 582 | /* Handle the -batch switch, which means don't do interactive display. */ |
f927c5ae | 583 | noninteractive = 0; |
df6530f8 | 584 | if (argmatch (argv, argc, "-batch", "--batch", 5, NULL, &skip_args)) |
e2925360 KH |
585 | noninteractive = 1; |
586 | ||
587 | /* Handle the --help option, which gives a usage message.. */ | |
df6530f8 | 588 | if (argmatch (argv, argc, "-help", "--help", 3, NULL, &skip_args)) |
f927c5ae | 589 | { |
e2925360 KH |
590 | printf ("\ |
591 | Usage: %s [-t term] [--terminal term] [-nw] [--no-windows] [--batch]\n\ | |
592 | [-q] [--no-init-file] [-u user] [--user user] [--debug-init]\n\ | |
afaa660f | 593 | [--version] [--no-site-file]\n\ |
e2925360 | 594 | [-f func] [--funcall func] [-l file] [--load file] [--insert file]\n\ |
afaa660f | 595 | [+linenum] file-to-visit [--kill]\n", argv[0]); |
e2925360 | 596 | exit (0); |
f927c5ae JB |
597 | } |
598 | ||
081bef73 RS |
599 | #ifdef HAVE_X_WINDOWS |
600 | /* Stupid kludge to catch command-line display spec. We can't | |
601 | handle this argument entirely in window system dependent code | |
602 | because we don't even know which window system dependent code | |
603 | to run until we've recognized this argument. */ | |
604 | { | |
605 | char *displayname; | |
606 | int i; | |
607 | int count_before = skip_args; | |
608 | ||
df6530f8 | 609 | if (argmatch (argv, argc, "-d", "--display", 3, &displayname, &skip_args)) |
081bef73 | 610 | display_arg = 1; |
df6530f8 | 611 | else if (argmatch (argv, argc, "-display", 0, 3, &displayname, &skip_args)) |
081bef73 RS |
612 | display_arg = 1; |
613 | ||
614 | /* If we have the form --display=NAME, | |
615 | convert it into -d name. | |
616 | This requires inserting a new element into argv. */ | |
617 | if (displayname != 0 && skip_args - count_before == 1) | |
618 | { | |
619 | char **new = (char **) xmalloc (sizeof (char *) * (argc + 2)); | |
620 | int j; | |
621 | ||
622 | for (j = 0; j < count_before + 1; j++) | |
623 | new[j] = argv[j]; | |
624 | new[count_before + 1] = "-d"; | |
625 | new[count_before + 2] = displayname; | |
626 | for (j = count_before + 2; j <argc; j++) | |
627 | new[j + 1] = argv[j]; | |
628 | argv = new; | |
629 | argc++; | |
630 | } | |
1702afef RS |
631 | /* Change --display to -d, when its arg is separate. */ |
632 | else if (displayname != 0 && skip_args > count_before | |
633 | && argv[count_before + 1][1] == '-') | |
813f79d5 | 634 | argv[count_before + 1] = "-d"; |
081bef73 RS |
635 | |
636 | /* Don't actually discard this arg. */ | |
637 | skip_args = count_before; | |
638 | } | |
639 | #endif | |
640 | ||
edb85f59 RS |
641 | if (! noninteractive) |
642 | { | |
643 | #ifdef BSD_PGRPS | |
644 | if (initialized) | |
645 | { | |
646 | inherited_pgroup = EMACS_GETPGRP (0); | |
647 | setpgrp (0, getpid ()); | |
648 | } | |
649 | #else | |
650 | #if defined (USG5) && defined (INTERRUPT_INPUT) | |
651 | setpgrp (); | |
652 | #endif | |
653 | #endif | |
654 | } | |
655 | ||
fb8e9847 JB |
656 | #ifdef POSIX_SIGNALS |
657 | init_signals (); | |
658 | #endif | |
659 | ||
1efa2983 KH |
660 | /* Don't catch SIGHUP if dumping. */ |
661 | if (1 | |
662 | #ifndef CANNOT_DUMP | |
663 | && initialized | |
664 | #endif | |
665 | ) | |
666 | { | |
667 | sigblockx (SIGHUP); | |
668 | /* In --batch mode, don't catch SIGHUP if already ignored. | |
669 | That makes nohup work. */ | |
670 | if (! noninteractive | |
671 | || signal (SIGHUP, SIG_IGN) != SIG_IGN) | |
672 | signal (SIGHUP, fatal_error_signal); | |
673 | sigunblockx (SIGHUP); | |
674 | } | |
675 | ||
f927c5ae JB |
676 | if ( |
677 | #ifndef CANNOT_DUMP | |
678 | ! noninteractive || initialized | |
679 | #else | |
680 | 1 | |
681 | #endif | |
682 | ) | |
683 | { | |
1efa2983 | 684 | /* Don't catch these signals in batch mode if dumping. |
f927c5ae JB |
685 | On some machines, this sets static data that would make |
686 | signal fail to work right when the dumped Emacs is run. */ | |
f927c5ae JB |
687 | signal (SIGQUIT, fatal_error_signal); |
688 | signal (SIGILL, fatal_error_signal); | |
689 | signal (SIGTRAP, fatal_error_signal); | |
99e372cd RS |
690 | #ifdef SIGABRT |
691 | signal (SIGABRT, fatal_error_signal); | |
692 | #endif | |
693 | #ifdef SIGHWE | |
694 | signal (SIGHWE, fatal_error_signal); | |
695 | #endif | |
696 | #ifdef SIGPRE | |
697 | signal (SIGPRE, fatal_error_signal); | |
698 | #endif | |
699 | #ifdef SIGORE | |
700 | signal (SIGORE, fatal_error_signal); | |
701 | #endif | |
702 | #ifdef SIGUME | |
703 | signal (SIGUME, fatal_error_signal); | |
704 | #endif | |
705 | #ifdef SIGDLK | |
706 | signal (SIGDLK, fatal_error_signal); | |
707 | #endif | |
708 | #ifdef SIGCPULIM | |
709 | signal (SIGCPULIM, fatal_error_signal); | |
710 | #endif | |
a90538cb JB |
711 | #ifdef SIGIOT |
712 | /* This is missing on some systems - OS/2, for example. */ | |
f927c5ae | 713 | signal (SIGIOT, fatal_error_signal); |
a90538cb | 714 | #endif |
f927c5ae JB |
715 | #ifdef SIGEMT |
716 | signal (SIGEMT, fatal_error_signal); | |
717 | #endif | |
718 | signal (SIGFPE, fatal_error_signal); | |
00eaaa32 | 719 | #ifdef SIGBUS |
f927c5ae | 720 | signal (SIGBUS, fatal_error_signal); |
00eaaa32 | 721 | #endif |
f927c5ae | 722 | signal (SIGSEGV, fatal_error_signal); |
00eaaa32 | 723 | #ifdef SIGSYS |
f927c5ae | 724 | signal (SIGSYS, fatal_error_signal); |
00eaaa32 | 725 | #endif |
f927c5ae JB |
726 | signal (SIGTERM, fatal_error_signal); |
727 | #ifdef SIGXCPU | |
728 | signal (SIGXCPU, fatal_error_signal); | |
729 | #endif | |
730 | #ifdef SIGXFSZ | |
731 | signal (SIGXFSZ, fatal_error_signal); | |
732 | #endif /* SIGXFSZ */ | |
733 | ||
271c7b7c RS |
734 | #ifdef SIGDANGER |
735 | /* This just means available memory is getting low. */ | |
736 | signal (SIGDANGER, memory_warning_signal); | |
737 | #endif | |
738 | ||
f927c5ae | 739 | #ifdef AIX |
56e034fa RS |
740 | /* 20 is SIGCHLD, 21 is SIGTTIN, 22 is SIGTTOU. */ |
741 | signal (SIGXCPU, fatal_error_signal); | |
0aef8561 | 742 | #ifndef _I386 |
f927c5ae | 743 | signal (SIGIOINT, fatal_error_signal); |
0aef8561 | 744 | #endif |
f927c5ae JB |
745 | signal (SIGGRANT, fatal_error_signal); |
746 | signal (SIGRETRACT, fatal_error_signal); | |
747 | signal (SIGSOUND, fatal_error_signal); | |
748 | signal (SIGMSG, fatal_error_signal); | |
749 | #endif /* AIX */ | |
750 | } | |
751 | ||
752 | noninteractive1 = noninteractive; | |
753 | ||
754 | /* Perform basic initializations (not merely interning symbols) */ | |
755 | ||
756 | if (!initialized) | |
757 | { | |
758 | init_alloc_once (); | |
759 | init_obarray (); | |
760 | init_eval_once (); | |
761 | init_syntax_once (); /* Create standard syntax table. */ | |
762 | /* Must be done before init_buffer */ | |
763 | init_casetab_once (); | |
764 | init_buffer_once (); /* Create buffer table and some buffers */ | |
765 | init_minibuf_once (); /* Create list of minibuffers */ | |
766 | /* Must precede init_window_once */ | |
767 | init_window_once (); /* Init the window system */ | |
768 | } | |
769 | ||
770 | init_alloc (); | |
f927c5ae JB |
771 | init_eval (); |
772 | init_data (); | |
7074fde6 | 773 | running_asynch_code = 0; |
0e956009 | 774 | |
29b89fe0 RS |
775 | #ifdef MSDOS |
776 | /* Call early 'cause init_environment needs it. */ | |
777 | init_dosfns (); | |
778 | /* Set defaults for several environment variables. */ | |
779 | if (initialized) init_environment (argc, argv, skip_args); | |
fc300075 | 780 | else init_gettimeofday (); |
29b89fe0 RS |
781 | #endif |
782 | ||
8ba50e1a GV |
783 | #ifdef WINDOWSNT |
784 | /* Initialize environment from registry settings. */ | |
785 | init_environment (); | |
786 | #endif | |
787 | ||
0e956009 JB |
788 | /* egetenv is a pretty low-level facility, which may get called in |
789 | many circumstances; it seems flimsy to put off initializing it | |
790 | until calling init_callproc. */ | |
791 | set_process_environment (); | |
93aed04d RS |
792 | /* AIX crashes are reported in system versions 3.2.3 and 3.2.4 |
793 | if this is not done. Do it after set_process_environment so that we | |
794 | don't pollute Vprocess_environment. */ | |
795 | #ifdef AIX | |
796 | putenv ("LANG=C"); | |
797 | #endif | |
0e956009 | 798 | |
ace40a69 RS |
799 | init_buffer (); /* Init default directory of main buffer */ |
800 | ||
7928f0b5 | 801 | init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */ |
ace40a69 | 802 | init_cmdargs (argc, argv, skip_args); /* Must precede init_lread. */ |
7928f0b5 | 803 | init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */ |
fb8e9847 | 804 | init_lread (); |
f927c5ae | 805 | |
f927c5ae JB |
806 | if (!noninteractive) |
807 | { | |
808 | #ifdef VMS | |
1cbd5d9d | 809 | init_vms_input ();/* init_display calls get_frame_size, that needs this */ |
f927c5ae JB |
810 | #endif /* VMS */ |
811 | init_display (); /* Determine terminal type. init_sys_modes uses results */ | |
812 | } | |
813 | init_keyboard (); /* This too must precede init_sys_modes */ | |
f927c5ae JB |
814 | #ifdef VMS |
815 | init_vmsproc (); /* And this too. */ | |
816 | #endif /* VMS */ | |
817 | init_sys_modes (); /* Init system terminal modes (RAW or CBREAK, etc.) */ | |
818 | init_xdisp (); | |
819 | init_macros (); | |
820 | init_editfns (); | |
821 | #ifdef LISP_FLOAT_TYPE | |
822 | init_floatfns (); | |
823 | #endif | |
824 | #ifdef VMS | |
825 | init_vmsfns (); | |
826 | #endif /* VMS */ | |
f927c5ae | 827 | init_process (); |
32676c08 JB |
828 | #ifdef CLASH_DETECTION |
829 | init_filelock (); | |
830 | #endif /* CLASH_DETECTION */ | |
f927c5ae JB |
831 | |
832 | /* Intern the names of all standard functions and variables; define standard keys */ | |
833 | ||
834 | if (!initialized) | |
835 | { | |
836 | /* The basic levels of Lisp must come first */ | |
837 | /* And data must come first of all | |
838 | for the sake of symbols like error-message */ | |
839 | syms_of_data (); | |
840 | syms_of_alloc (); | |
fb8e9847 | 841 | syms_of_lread (); |
f927c5ae JB |
842 | syms_of_print (); |
843 | syms_of_eval (); | |
844 | syms_of_fns (); | |
f927c5ae | 845 | syms_of_floatfns (); |
f927c5ae JB |
846 | |
847 | syms_of_abbrev (); | |
848 | syms_of_buffer (); | |
849 | syms_of_bytecode (); | |
850 | syms_of_callint (); | |
851 | syms_of_casefiddle (); | |
852 | syms_of_casetab (); | |
853 | syms_of_callproc (); | |
854 | syms_of_cmds (); | |
855 | #ifndef NO_DIR_LIBRARY | |
856 | syms_of_dired (); | |
857 | #endif /* not NO_DIR_LIBRARY */ | |
858 | syms_of_display (); | |
859 | syms_of_doc (); | |
860 | syms_of_editfns (); | |
861 | syms_of_emacs (); | |
862 | syms_of_fileio (); | |
863 | #ifdef CLASH_DETECTION | |
864 | syms_of_filelock (); | |
865 | #endif /* CLASH_DETECTION */ | |
866 | syms_of_indent (); | |
867 | syms_of_keyboard (); | |
868 | syms_of_keymap (); | |
869 | syms_of_macros (); | |
870 | syms_of_marker (); | |
871 | syms_of_minibuf (); | |
872 | syms_of_mocklisp (); | |
f927c5ae | 873 | syms_of_process (); |
f927c5ae | 874 | syms_of_search (); |
1cbd5d9d | 875 | syms_of_frame (); |
f927c5ae | 876 | syms_of_syntax (); |
0d934e7b | 877 | syms_of_term (); |
f927c5ae | 878 | syms_of_undo (); |
bef79ee4 JA |
879 | |
880 | /* Only defined if Emacs is compiled with USE_TEXT_PROPERTIES */ | |
881 | syms_of_textprop (); | |
f927c5ae JB |
882 | #ifdef VMS |
883 | syms_of_vmsproc (); | |
884 | #endif /* VMS */ | |
885 | syms_of_window (); | |
886 | syms_of_xdisp (); | |
887 | #ifdef HAVE_X_WINDOWS | |
72412588 | 888 | syms_of_xterm (); |
f927c5ae | 889 | syms_of_xfns (); |
9c3f23b7 | 890 | syms_of_xfaces (); |
72412588 JB |
891 | #ifdef HAVE_X11 |
892 | syms_of_xselect (); | |
893 | #endif | |
f927c5ae JB |
894 | #endif /* HAVE_X_WINDOWS */ |
895 | ||
87485d6f MW |
896 | #if defined (MSDOS) && !defined (HAVE_X_WINDOWS) |
897 | syms_of_xfaces (); | |
87485d6f MW |
898 | #endif |
899 | ||
1e9c210b | 900 | #ifndef HAVE_NTGUI |
6c850f3c | 901 | syms_of_xmenu (); |
1e9c210b | 902 | #endif |
6c850f3c | 903 | |
8ba50e1a GV |
904 | #ifdef HAVE_NTGUI |
905 | syms_of_win32term (); | |
906 | syms_of_win32fns (); | |
907 | syms_of_win32faces (); | |
908 | syms_of_win32select (); | |
909 | syms_of_win32menu (); | |
910 | #endif /* HAVE_NTGUI */ | |
911 | ||
f927c5ae JB |
912 | #ifdef SYMS_SYSTEM |
913 | SYMS_SYSTEM; | |
914 | #endif | |
915 | ||
916 | #ifdef SYMS_MACHINE | |
917 | SYMS_MACHINE; | |
918 | #endif | |
919 | ||
920 | keys_of_casefiddle (); | |
921 | keys_of_cmds (); | |
922 | keys_of_buffer (); | |
923 | keys_of_keyboard (); | |
924 | keys_of_keymap (); | |
925 | keys_of_macros (); | |
926 | keys_of_minibuf (); | |
927 | keys_of_window (); | |
5e67fbc2 | 928 | keys_of_frame (); |
f927c5ae JB |
929 | } |
930 | ||
931 | if (!initialized) | |
932 | { | |
e2925360 | 933 | char *file; |
f927c5ae | 934 | /* Handle -l loadup-and-dump, args passed by Makefile. */ |
df6530f8 | 935 | if (argmatch (argv, argc, "-l", "--load", 3, &file, &skip_args)) |
f927c5ae | 936 | Vtop_level = Fcons (intern ("load"), |
e2925360 | 937 | Fcons (build_string (file), Qnil)); |
f927c5ae JB |
938 | #ifdef CANNOT_DUMP |
939 | /* Unless next switch is -nl, load "loadup.el" first thing. */ | |
df6530f8 | 940 | if (!argmatch (argv, argc, "-nl", "--no-loadup", 6, NULL, &skip_args)) |
f927c5ae JB |
941 | Vtop_level = Fcons (intern ("load"), |
942 | Fcons (build_string ("loadup.el"), Qnil)); | |
943 | #endif /* CANNOT_DUMP */ | |
944 | } | |
945 | ||
93572b43 KH |
946 | if (initialized) |
947 | { | |
948 | /* Erase any pre-dump messages in the message log, to avoid confusion */ | |
949 | Lisp_Object old_log_max; | |
950 | old_log_max = Vmessage_log_max; | |
951 | XSETFASTINT (Vmessage_log_max, 0); | |
952 | message_dolog ("", 0, 1); | |
953 | Vmessage_log_max = old_log_max; | |
0269dedb RS |
954 | |
955 | #ifdef HAVE_TZSET | |
956 | { | |
957 | /* If the execution TZ happens to be the same as the dump TZ, | |
958 | change it to some other value and then change it back, | |
959 | to force the underlying implementation to reload the TZ info. | |
960 | This is needed on implementations that load TZ info from files, | |
961 | since the TZ file contents may differ between dump and execution. */ | |
962 | char *tz = getenv ("TZ"); | |
963 | if (tz && !strcmp (tz, dump_tz)) | |
964 | { | |
965 | ++*tz; | |
966 | tzset (); | |
967 | --*tz; | |
968 | } | |
969 | } | |
970 | #endif | |
93572b43 KH |
971 | } |
972 | ||
f927c5ae JB |
973 | initialized = 1; |
974 | ||
e7536cff RS |
975 | #ifdef LOCALTIME_CACHE |
976 | /* Some versions of localtime have a bug. They cache the value of the time | |
279cc2b8 JB |
977 | zone rather than looking it up every time. Since localtime() is |
978 | called to bolt the undumping time into the undumped emacs, this | |
afe9fae9 RS |
979 | results in localtime ignoring the TZ environment variable. |
980 | This flushes the new TZ value into localtime. */ | |
981 | tzset (); | |
e7536cff | 982 | #endif /* defined (LOCALTIME_CACHE) */ |
279cc2b8 | 983 | |
f927c5ae JB |
984 | /* Enter editor command loop. This never returns. */ |
985 | Frecursive_edit (); | |
986 | /* NOTREACHED */ | |
987 | } | |
988 | \f | |
081bef73 RS |
989 | /* Sort the args so we can find the most important ones |
990 | at the beginning of argv. */ | |
991 | ||
992 | /* First, here's a table of all the standard options. */ | |
993 | ||
994 | struct standard_args | |
995 | { | |
996 | char *name; | |
997 | char *longname; | |
998 | int priority; | |
999 | int nargs; | |
1000 | }; | |
1001 | ||
1002 | struct standard_args standard_args[] = | |
1003 | { | |
221cbd7d RS |
1004 | { "-version", "--version", 110, 0 }, |
1005 | { "-help", "--help", 110, 0 }, | |
081bef73 | 1006 | { "-nl", "--no-shared-memory", 100, 0 }, |
2725719a | 1007 | #ifdef VMS |
081bef73 | 1008 | { "-map", "--map-data", 100, 0 }, |
2725719a | 1009 | #endif |
081bef73 RS |
1010 | { "-t", "--terminal", 90, 1 }, |
1011 | { "-d", "--display", 80, 1 }, | |
1012 | { "-display", 0, 80, 1 }, | |
1013 | { "-nw", "--no-windows", 70, 0 }, | |
1014 | { "-batch", "--batch", 60, 0 }, | |
1015 | { "-q", "--no-init-file", 50, 0 }, | |
1016 | { "-no-init-file", 0, 50, 0 }, | |
1017 | { "-no-site-file", "--no-site-file", 40, 0 }, | |
1018 | { "-u", "--user", 30, 1 }, | |
1019 | { "-user", 0, 30, 1 }, | |
1020 | { "-debug-init", "--debug-init", 20, 0 }, | |
adab4483 KH |
1021 | { "-i", "--icon-type", 15, 0 }, |
1022 | { "-itype", 0, 15, 0 }, | |
f2bc3538 | 1023 | { "-iconic", "--iconic", 15, 0 }, |
081bef73 RS |
1024 | { "-bg", "--background-color", 10, 1 }, |
1025 | { "-background", 0, 10, 1 }, | |
1026 | { "-fg", "--foreground-color", 10, 1 }, | |
1027 | { "-foreground", 0, 10, 1 }, | |
1028 | { "-bd", "--border-color", 10, 1 }, | |
1029 | { "-bw", "--border-width", 10, 1 }, | |
1030 | { "-ib", "--internal-border", 10, 1 }, | |
1031 | { "-ms", "--mouse-color", 10, 1 }, | |
1032 | { "-cr", "--cursor-color", 10, 1 }, | |
1033 | { "-fn", "--font", 10, 1 }, | |
1034 | { "-font", 0, 10, 1 }, | |
1035 | { "-g", "--geometry", 10, 1 }, | |
1036 | { "-geometry", 0, 10, 1 }, | |
1037 | { "-T", "--title", 10, 1 }, | |
081bef73 RS |
1038 | { "-name", "--name", 10, 1 }, |
1039 | { "-xrm", "--xrm", 10, 1 }, | |
fcdeb5d9 RS |
1040 | { "-r", "--reverse-video", 5, 0 }, |
1041 | { "-rv", 0, 5, 0 }, | |
1042 | { "-reverse", 0, 5, 0 }, | |
1043 | { "-vb", "--vertical-scroll-bars", 5, 0 }, | |
fcdeb5d9 RS |
1044 | /* These have the same priority as ordinary file name args, |
1045 | so they are not reordered with respect to those. */ | |
4af9e0b3 RS |
1046 | { "-L", "--directory", 0, 1 }, |
1047 | { "-directory", 0, 0, 1 }, | |
fcdeb5d9 RS |
1048 | { "-l", "--load", 0, 1 }, |
1049 | { "-load", 0, 0, 1 }, | |
1050 | { "-f", "--funcall", 0, 1 }, | |
1051 | { "-funcall", 0, 0, 1 }, | |
575985b1 | 1052 | { "-eval", "--eval", 0, 1 }, |
fcdeb5d9 | 1053 | { "-insert", "--insert", 0, 1 }, |
f2bc3538 | 1054 | /* This should be processed after ordinary file name args and the like. */ |
fcdeb5d9 | 1055 | { "-kill", "--kill", -10, 0 }, |
081bef73 RS |
1056 | }; |
1057 | ||
1058 | /* Reorder the elements of ARGV (assumed to have ARGC elements) | |
1059 | so that the highest priority ones come first. | |
1060 | Do not change the order of elements of equal priority. | |
1061 | If an option takes an argument, keep it and its argument together. */ | |
1062 | ||
1063 | static void | |
1064 | sort_args (argc, argv) | |
1065 | int argc; | |
1066 | char **argv; | |
1067 | { | |
1068 | char **new = (char **) xmalloc (sizeof (char *) * argc); | |
1069 | /* For each element of argv, | |
1070 | the corresponding element of options is: | |
1071 | 0 for an option that takes no arguments, | |
1072 | 1 for an option that takes one argument, etc. | |
1073 | -1 for an ordinary non-option argument. */ | |
6dad9359 | 1074 | int *options = (int *) xmalloc (sizeof (int) * argc); |
081bef73 RS |
1075 | int *priority = (int *) xmalloc (sizeof (int) * argc); |
1076 | int to = 1; | |
1077 | int from; | |
1078 | int i; | |
1079 | ||
1080 | /* Categorize all the options, | |
1081 | and figure out which argv elts are option arguments. */ | |
1082 | for (from = 1; from < argc; from++) | |
1083 | { | |
1084 | options[from] = -1; | |
fcdeb5d9 | 1085 | priority[from] = 0; |
081bef73 RS |
1086 | if (argv[from][0] == '-') |
1087 | { | |
1088 | int match, thislen; | |
1089 | char *equals; | |
1090 | ||
1091 | /* Look for a match with a known old-fashioned option. */ | |
1092 | for (i = 0; i < sizeof (standard_args) / sizeof (standard_args[0]); i++) | |
1093 | if (!strcmp (argv[from], standard_args[i].name)) | |
1094 | { | |
1095 | options[from] = standard_args[i].nargs; | |
1096 | priority[from] = standard_args[i].priority; | |
fd76ec52 RS |
1097 | if (from + standard_args[i].nargs >= argc) |
1098 | fatal ("Option `%s' requires an argument\n", argv[from]); | |
081bef73 RS |
1099 | from += standard_args[i].nargs; |
1100 | goto done; | |
1101 | } | |
1102 | ||
1103 | /* Look for a match with a known long option. | |
1104 | MATCH is -1 if no match so far, -2 if two or more matches so far, | |
1105 | >= 0 (the table index of the match) if just one match so far. */ | |
1106 | if (argv[from][1] == '-') | |
1107 | { | |
1108 | match = -1; | |
1109 | thislen = strlen (argv[from]); | |
1110 | equals = index (argv[from], '='); | |
1111 | if (equals != 0) | |
1112 | thislen = equals - argv[from]; | |
1113 | ||
f609ef57 KH |
1114 | for (i = 0; |
1115 | i < sizeof (standard_args) / sizeof (standard_args[0]); i++) | |
1116 | if (standard_args[i].longname | |
1117 | && !strncmp (argv[from], standard_args[i].longname, | |
1118 | thislen)) | |
081bef73 RS |
1119 | { |
1120 | if (match == -1) | |
1121 | match = i; | |
1122 | else | |
1123 | match = -2; | |
1124 | } | |
1125 | ||
1126 | /* If we found exactly one match, use that. */ | |
1127 | if (match >= 0) | |
1128 | { | |
1129 | options[from] = standard_args[match].nargs; | |
1130 | priority[from] = standard_args[match].priority; | |
1131 | /* If --OPTION=VALUE syntax is used, | |
1132 | this option uses just one argv element. */ | |
1133 | if (equals != 0) | |
1134 | options[from] = 0; | |
fd76ec52 RS |
1135 | if (from + options[from] >= argc) |
1136 | fatal ("Option `%s' requires an argument\n", argv[from]); | |
081bef73 RS |
1137 | from += options[from]; |
1138 | } | |
1139 | } | |
1140 | done: ; | |
1141 | } | |
1142 | } | |
1143 | ||
1144 | /* Copy the arguments, in order of decreasing priority, to NEW. */ | |
1145 | new[0] = argv[0]; | |
1146 | while (to < argc) | |
1147 | { | |
1148 | int best = -1; | |
2c70c992 | 1149 | int best_priority = -9999; |
081bef73 RS |
1150 | |
1151 | /* Find the highest priority remaining option. | |
1152 | If several have equal priority, take the first of them. */ | |
1153 | for (from = 1; from < argc; from++) | |
1154 | { | |
1155 | if (argv[from] != 0 && priority[from] > best_priority) | |
1156 | { | |
1157 | best_priority = priority[from]; | |
1158 | best = from; | |
1159 | } | |
1160 | /* Skip option arguments--they are tied to the options. */ | |
1161 | if (options[from] > 0) | |
1162 | from += options[from]; | |
1163 | } | |
1164 | ||
1165 | if (best < 0) | |
1166 | abort (); | |
1167 | ||
1168 | /* Copy the highest priority remaining option, with its args, to NEW. */ | |
1169 | new[to++] = argv[best]; | |
1170 | for (i = 0; i < options[best]; i++) | |
1171 | new[to++] = argv[best + i + 1]; | |
1172 | ||
1173 | /* Clear out this option in ARGV. */ | |
1174 | argv[best] = 0; | |
1175 | for (i = 0; i < options[best]; i++) | |
1176 | argv[best + i + 1] = 0; | |
1177 | } | |
1178 | ||
6dad9359 | 1179 | bcopy (new, argv, sizeof (char *) * argc); |
081bef73 RS |
1180 | } |
1181 | \f | |
f927c5ae | 1182 | DEFUN ("kill-emacs", Fkill_emacs, Skill_emacs, 0, 1, "P", |
edc8ae07 | 1183 | "Exit the Emacs job and kill it.\n\ |
f927c5ae JB |
1184 | If ARG is an integer, return ARG as the exit program code.\n\ |
1185 | If ARG is a string, stuff it as keyboard input.\n\n\ | |
1186 | The value of `kill-emacs-hook', if not void,\n\ | |
1187 | is a list of functions (of no args),\n\ | |
1188 | all of which are called before Emacs is actually killed.") | |
1189 | (arg) | |
1190 | Lisp_Object arg; | |
1191 | { | |
1192 | Lisp_Object hook, hook1; | |
1193 | int i; | |
1194 | struct gcpro gcpro1; | |
1195 | ||
1196 | GCPRO1 (arg); | |
1197 | ||
1198 | if (feof (stdin)) | |
1199 | arg = Qt; | |
1200 | ||
2447c626 | 1201 | if (!NILP (Vrun_hooks) && !noninteractive) |
f927c5ae JB |
1202 | call1 (Vrun_hooks, intern ("kill-emacs-hook")); |
1203 | ||
f927c5ae JB |
1204 | UNGCPRO; |
1205 | ||
1206 | /* Is it really necessary to do this deassign | |
1207 | when we are going to exit anyway? */ | |
1208 | /* #ifdef VMS | |
1209 | stop_vms_input (); | |
1210 | #endif */ | |
40be253a | 1211 | |
d0068e25 | 1212 | shut_down_emacs (0, 0, STRINGP (arg) ? arg : Qnil); |
40be253a | 1213 | |
58545838 KH |
1214 | /* If we have an auto-save list file, |
1215 | kill it because we are exiting Emacs deliberately (not crashing). | |
1216 | Do it after shut_down_emacs, which does an auto-save. */ | |
1217 | if (STRINGP (Vauto_save_list_file_name)) | |
1218 | unlink (XSTRING (Vauto_save_list_file_name)->data); | |
1219 | ||
55ccc0b3 | 1220 | exit (INTEGERP (arg) ? XINT (arg) |
f927c5ae JB |
1221 | #ifdef VMS |
1222 | : 1 | |
1223 | #else | |
1224 | : 0 | |
1225 | #endif | |
1226 | ); | |
1227 | /* NOTREACHED */ | |
1228 | } | |
40be253a JB |
1229 | |
1230 | ||
1231 | /* Perform an orderly shutdown of Emacs. Autosave any modified | |
1232 | buffers, kill any child processes, clean up the terminal modes (if | |
1233 | we're in the foreground), and other stuff like that. Don't perform | |
1234 | any redisplay; this may be called when Emacs is shutting down in | |
1235 | the background, or after its X connection has died. | |
1236 | ||
1237 | If SIG is a signal number, print a message for it. | |
1238 | ||
1239 | This is called by fatal signal handlers, X protocol error handlers, | |
1240 | and Fkill_emacs. */ | |
f7ab4e3d | 1241 | |
40be253a | 1242 | void |
f7ab4e3d | 1243 | shut_down_emacs (sig, no_x, stuff) |
41423a80 | 1244 | int sig, no_x; |
f7ab4e3d | 1245 | Lisp_Object stuff; |
40be253a | 1246 | { |
829d872b RS |
1247 | /* Prevent running of hooks from now on. */ |
1248 | Vrun_hooks = Qnil; | |
1249 | ||
40be253a JB |
1250 | /* If we are controlling the terminal, reset terminal modes */ |
1251 | #ifdef EMACS_HAVE_TTY_PGRP | |
1252 | { | |
d04d81d2 RS |
1253 | int pgrp = EMACS_GETPGRP (0); |
1254 | ||
40be253a JB |
1255 | int tpgrp; |
1256 | if (EMACS_GET_TTY_PGRP (0, &tpgrp) != -1 | |
5a570e37 | 1257 | && tpgrp == pgrp) |
40be253a JB |
1258 | { |
1259 | fflush (stdout); | |
1260 | reset_sys_modes (); | |
1261 | if (sig && sig != SIGTERM) | |
1262 | fprintf (stderr, "Fatal error (%d).", sig); | |
1263 | } | |
1264 | } | |
1265 | #else | |
1266 | fflush (stdout); | |
1267 | reset_sys_modes (); | |
1268 | #endif | |
1269 | ||
f7ab4e3d RS |
1270 | stuff_buffered_input (stuff); |
1271 | ||
40be253a JB |
1272 | kill_buffer_processes (Qnil); |
1273 | Fdo_auto_save (Qt, Qnil); | |
1274 | ||
1275 | #ifdef CLASH_DETECTION | |
1276 | unlock_all_files (); | |
1277 | #endif | |
1278 | ||
1279 | #ifdef VMS | |
1280 | kill_vms_processes (); | |
1281 | #endif | |
1282 | ||
5e7f8733 | 1283 | #if 0 /* This triggers a bug in XCloseDisplay and is not needed. */ |
41423a80 | 1284 | #ifdef HAVE_X_WINDOWS |
f7511647 RS |
1285 | /* It's not safe to call intern here. Maybe we are crashing. */ |
1286 | if (!noninteractive && SYMBOLP (Vwindow_system) | |
1287 | && XSYMBOL (Vwindow_system)->name->size == 1 | |
1288 | && XSYMBOL (Vwindow_system)->name->data[0] == 'x' | |
1289 | && ! no_x) | |
41423a80 RS |
1290 | Fx_close_current_connection (); |
1291 | #endif /* HAVE_X_WINDOWS */ | |
5e7f8733 | 1292 | #endif |
41423a80 | 1293 | |
40be253a JB |
1294 | #ifdef SIGIO |
1295 | /* There is a tendency for a SIGIO signal to arrive within exit, | |
1296 | and cause a SIGHUP because the input descriptor is already closed. */ | |
1297 | unrequest_sigio (); | |
1298 | signal (SIGIO, SIG_IGN); | |
1299 | #endif | |
1300 | } | |
1301 | ||
1302 | ||
f927c5ae JB |
1303 | \f |
1304 | #ifndef CANNOT_DUMP | |
f927c5ae JB |
1305 | |
1306 | #ifdef HAVE_SHM | |
1307 | ||
1308 | DEFUN ("dump-emacs-data", Fdump_emacs_data, Sdump_emacs_data, 1, 1, 0, | |
1309 | "Dump current state of Emacs into data file FILENAME.\n\ | |
1310 | This function exists on systems that use HAVE_SHM.") | |
c9aae259 EN |
1311 | (filename) |
1312 | Lisp_Object filename; | |
f927c5ae | 1313 | { |
55697f5b | 1314 | extern char my_edata[]; |
f927c5ae | 1315 | Lisp_Object tem; |
f927c5ae | 1316 | |
c9aae259 EN |
1317 | CHECK_STRING (filename, 0); |
1318 | filename = Fexpand_file_name (filename, Qnil); | |
f927c5ae JB |
1319 | |
1320 | tem = Vpurify_flag; | |
1321 | Vpurify_flag = Qnil; | |
1322 | ||
1323 | fflush (stdout); | |
1324 | /* Tell malloc where start of impure now is */ | |
1325 | /* Also arrange for warnings when nearly out of space. */ | |
1326 | #ifndef SYSTEM_MALLOC | |
1090a161 | 1327 | memory_warnings (my_edata, malloc_warning); |
f927c5ae | 1328 | #endif |
c9aae259 | 1329 | map_out_data (XSTRING (filename)->data); |
f927c5ae JB |
1330 | |
1331 | Vpurify_flag = tem; | |
1332 | ||
1333 | return Qnil; | |
1334 | } | |
1335 | ||
1336 | #else /* not HAVE_SHM */ | |
1337 | ||
1338 | DEFUN ("dump-emacs", Fdump_emacs, Sdump_emacs, 2, 2, 0, | |
1339 | "Dump current state of Emacs into executable file FILENAME.\n\ | |
1340 | Take symbols from SYMFILE (presumably the file you executed to run Emacs).\n\ | |
1341 | This is used in the file `loadup.el' when building Emacs.\n\ | |
1342 | \n\ | |
1343 | Bind `command-line-processed' to nil before dumping,\n\ | |
1344 | if you want the dumped Emacs to process its command line\n\ | |
1345 | and announce itself normally when it is run.") | |
c9aae259 EN |
1346 | (filename, symfile) |
1347 | Lisp_Object filename, symfile; | |
f927c5ae | 1348 | { |
55697f5b | 1349 | extern char my_edata[]; |
f927c5ae | 1350 | Lisp_Object tem; |
f927c5ae | 1351 | |
c9aae259 EN |
1352 | CHECK_STRING (filename, 0); |
1353 | filename = Fexpand_file_name (filename, Qnil); | |
1354 | if (!NILP (symfile)) | |
f927c5ae | 1355 | { |
c9aae259 EN |
1356 | CHECK_STRING (symfile, 0); |
1357 | if (XSTRING (symfile)->size) | |
1358 | symfile = Fexpand_file_name (symfile, Qnil); | |
f927c5ae JB |
1359 | } |
1360 | ||
1361 | tem = Vpurify_flag; | |
1362 | Vpurify_flag = Qnil; | |
1363 | ||
0269dedb RS |
1364 | #ifdef HAVE_TZSET |
1365 | set_time_zone_rule (dump_tz); | |
1366 | #ifndef LOCALTIME_CACHE | |
1367 | /* Force a tz reload, since set_time_zone_rule doesn't. */ | |
1368 | tzset (); | |
1369 | #endif | |
1370 | #endif | |
1371 | ||
f927c5ae JB |
1372 | fflush (stdout); |
1373 | #ifdef VMS | |
c9aae259 | 1374 | mapout_data (XSTRING (filename)->data); |
f927c5ae JB |
1375 | #else |
1376 | /* Tell malloc where start of impure now is */ | |
1377 | /* Also arrange for warnings when nearly out of space. */ | |
1378 | #ifndef SYSTEM_MALLOC | |
cc5f52cb RS |
1379 | #ifndef WINDOWSNT |
1380 | /* On Windows, this was done before dumping, and that once suffices. | |
1381 | Meanwhile, my_edata is not valid on Windows. */ | |
cb37cf78 | 1382 | memory_warnings (my_edata, malloc_warning); |
cc5f52cb | 1383 | #endif /* not WINDOWSNT */ |
f927c5ae | 1384 | #endif |
c9aae259 EN |
1385 | unexec (XSTRING (filename)->data, |
1386 | !NILP (symfile) ? XSTRING (symfile)->data : 0, my_edata, 0, 0); | |
f927c5ae JB |
1387 | #endif /* not VMS */ |
1388 | ||
1389 | Vpurify_flag = tem; | |
1390 | ||
1391 | return Qnil; | |
1392 | } | |
1393 | ||
1394 | #endif /* not HAVE_SHM */ | |
1395 | ||
1396 | #endif /* not CANNOT_DUMP */ | |
1397 | \f | |
4b163808 | 1398 | #ifndef SEPCHAR |
f927c5ae JB |
1399 | #define SEPCHAR ':' |
1400 | #endif | |
1401 | ||
1402 | Lisp_Object | |
1403 | decode_env_path (evarname, defalt) | |
1404 | char *evarname, *defalt; | |
1405 | { | |
1406 | register char *path, *p; | |
f927c5ae JB |
1407 | |
1408 | Lisp_Object lpath; | |
1409 | ||
2447c626 JB |
1410 | /* It's okay to use getenv here, because this function is only used |
1411 | to initialize variables when Emacs starts up, and isn't called | |
1412 | after that. */ | |
e065a56e JB |
1413 | if (evarname != 0) |
1414 | path = (char *) getenv (evarname); | |
1415 | else | |
1416 | path = 0; | |
f927c5ae JB |
1417 | if (!path) |
1418 | path = defalt; | |
1419 | lpath = Qnil; | |
1420 | while (1) | |
1421 | { | |
1422 | p = index (path, SEPCHAR); | |
1423 | if (!p) p = path + strlen (path); | |
d70fbcca RS |
1424 | lpath = Fcons (p - path ? make_string (path, p - path) |
1425 | : build_string ("."), | |
f927c5ae JB |
1426 | lpath); |
1427 | if (*p) | |
1428 | path = p + 1; | |
1429 | else | |
1430 | break; | |
1431 | } | |
1432 | return Fnreverse (lpath); | |
1433 | } | |
1434 | ||
1435 | syms_of_emacs () | |
1436 | { | |
83591e66 | 1437 | #ifndef CANNOT_DUMP |
f927c5ae JB |
1438 | #ifdef HAVE_SHM |
1439 | defsubr (&Sdump_emacs_data); | |
1440 | #else | |
1441 | defsubr (&Sdump_emacs); | |
83591e66 | 1442 | #endif |
f927c5ae JB |
1443 | #endif |
1444 | ||
1445 | defsubr (&Skill_emacs); | |
1446 | ||
59653951 | 1447 | defsubr (&Sinvocation_name); |
ace40a69 | 1448 | defsubr (&Sinvocation_directory); |
59653951 | 1449 | |
f927c5ae JB |
1450 | DEFVAR_LISP ("command-line-args", &Vcommand_line_args, |
1451 | "Args passed by shell to Emacs, as a list of strings."); | |
1452 | ||
1453 | DEFVAR_LISP ("system-type", &Vsystem_type, | |
1454 | "Value is symbol indicating type of operating system you are using."); | |
1455 | Vsystem_type = intern (SYSTEM_TYPE); | |
1456 | ||
271c7b7c RS |
1457 | DEFVAR_LISP ("system-configuration", &Vsystem_configuration, |
1458 | "Value is string indicating configuration Emacs was built for."); | |
f7511647 | 1459 | Vsystem_configuration = build_string (EMACS_CONFIGURATION); |
271c7b7c | 1460 | |
f0fc0b1a KH |
1461 | DEFVAR_LISP ("system-configuration-options", &Vsystem_configuration_options, |
1462 | "String containing the configuration options Emacs was built with."); | |
1463 | Vsystem_configuration_options = build_string (EMACS_CONFIG_OPTIONS); | |
1464 | ||
f927c5ae JB |
1465 | DEFVAR_BOOL ("noninteractive", &noninteractive1, |
1466 | "Non-nil means Emacs is running without interactive terminal."); | |
e5d77022 | 1467 | |
e5d77022 | 1468 | DEFVAR_LISP ("kill-emacs-hook", &Vkill_emacs_hook, |
edc8ae07 JB |
1469 | "Hook to be run whenever kill-emacs is called.\n\ |
1470 | Since kill-emacs may be invoked when the terminal is disconnected (or\n\ | |
1471 | in other similar situations), functions placed on this hook should not\n\ | |
9f232a5d RS |
1472 | expect to be able to interact with the user. To ask for confirmation,\n\ |
1473 | see `kill-emacs-query-functions' instead."); | |
edc8ae07 | 1474 | Vkill_emacs_hook = Qnil; |
3005da00 RS |
1475 | |
1476 | DEFVAR_INT ("emacs-priority", &emacs_priority, | |
1477 | "Priority for Emacs to run at.\n\ | |
1478 | This value is effective only if set before Emacs is dumped,\n\ | |
1479 | and only if the Emacs executable is installed with setuid to permit\n\ | |
621ecf99 | 1480 | it to change priority. (Emacs sets its uid back to the real uid.)\n\ |
a422068f | 1481 | Currently, you need to define SET_EMACS_PRIORITY in `config.h'\n\ |
ce305b11 | 1482 | before you compile Emacs, to enable the code for this feature."); |
3005da00 | 1483 | emacs_priority = 0; |
59653951 | 1484 | |
f67de86f RS |
1485 | DEFVAR_LISP ("invocation-name", &Vinvocation_name, |
1486 | "The program name that was used to run Emacs.\n\ | |
1487 | Any directory names are omitted."); | |
1488 | ||
1489 | DEFVAR_LISP ("invocation-directory", &Vinvocation_directory, | |
1490 | "The directory in which the Emacs executable was found, to run it.\n\ | |
1491 | The value is nil if that directory's name is not known."); | |
1492 | ||
1493 | DEFVAR_LISP ("installation-directory", &Vinstallation_directory, | |
1494 | "A directory within which to look for the `lib-src' and `etc' directories.\n\ | |
1495 | This is non-nil when we can't find those directories in their standard\n\ | |
1496 | installed locations, but we can find them\n\ | |
1497 | near where the Emacs executable was found."); | |
07f4d123 | 1498 | Vinstallation_directory = Qnil; |
f927c5ae | 1499 | } |