|
1683
|
1 /* |
|
|
2 |
|
2847
|
3 Copyright (C) 1996, 1997 John W. Eaton |
|
1683
|
4 |
|
|
5 This file is part of Octave. |
|
|
6 |
|
|
7 Octave is free software; you can redistribute it and/or modify it |
|
|
8 under the terms of the GNU General Public License as published by the |
|
|
9 Free Software Foundation; either version 2, or (at your option) any |
|
|
10 later version. |
|
|
11 |
|
|
12 Octave is distributed in the hope that it will be useful, but WITHOUT |
|
|
13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
|
|
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
|
|
15 for more details. |
|
|
16 |
|
|
17 You should have received a copy of the GNU General Public License |
|
|
18 along with Octave; see the file COPYING. If not, write to the Free |
|
|
19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
|
|
20 |
|
|
21 */ |
|
|
22 |
|
|
23 #ifdef HAVE_CONFIG_H |
|
|
24 #include <config.h> |
|
|
25 #endif |
|
|
26 |
|
|
27 #include <cassert> |
|
|
28 #include <csetjmp> |
|
|
29 #include <csignal> |
|
|
30 #include <cstdlib> |
|
|
31 #include <cstring> |
|
|
32 #include <ctime> |
|
|
33 |
|
1728
|
34 #include <string> |
|
|
35 |
|
1683
|
36 #include <fstream.h> |
|
|
37 #include <iostream.h> |
|
|
38 #include <strstream.h> |
|
|
39 |
|
|
40 #ifdef HAVE_UNISTD_H |
|
2442
|
41 #ifdef HAVE_SYS_TYPES_H |
|
1683
|
42 #include <sys/types.h> |
|
2442
|
43 #endif |
|
1683
|
44 #include <unistd.h> |
|
|
45 #endif |
|
|
46 |
|
|
47 #include "lo-error.h" |
|
2370
|
48 #include "lo-mappers.h" |
|
1755
|
49 #include "str-vec.h" |
|
1683
|
50 |
|
2492
|
51 #include <defaults.h> |
|
1683
|
52 #include "defun.h" |
|
|
53 #include "dynamic-ld.h" |
|
|
54 #include "error.h" |
|
|
55 #include "file-io.h" |
|
|
56 #include "help.h" |
|
|
57 #include "input.h" |
|
|
58 #include "lex.h" |
|
2492
|
59 #include <oct-conf.h> |
|
1742
|
60 #include "oct-hist.h" |
|
2162
|
61 #include "oct-map.h" |
|
2862
|
62 #include "oct-obj.h" |
|
2891
|
63 #include "oct-sym.h" |
|
1683
|
64 #include "pager.h" |
|
|
65 #include "parse.h" |
|
|
66 #include "pathsearch.h" |
|
|
67 #include "procstream.h" |
|
2370
|
68 #include "ov.h" |
|
1750
|
69 #include "pt-misc.h" |
|
|
70 #include "pt-plot.h" |
|
1683
|
71 #include "sighandlers.h" |
|
|
72 #include "sysdep.h" |
|
2693
|
73 #include "syswait.h" |
|
1750
|
74 #include "toplev.h" |
|
1683
|
75 #include "unwind-prot.h" |
|
|
76 #include "utils.h" |
|
|
77 #include "variables.h" |
|
2492
|
78 #include <version.h> |
|
1683
|
79 |
|
|
80 // argv[0] for this program. |
|
2204
|
81 string Vprogram_invocation_name; |
|
1683
|
82 |
|
|
83 // Cleaned-up name of this program, not including path information. |
|
2204
|
84 string Vprogram_name; |
|
1683
|
85 |
|
|
86 // Login name for user running this program. |
|
2204
|
87 string Vuser_name; |
|
1683
|
88 |
|
|
89 // Name of the host we are running on. |
|
2204
|
90 string Vhost_name; |
|
1683
|
91 |
|
|
92 // User's home directory. |
|
2204
|
93 string Vhome_directory; |
|
1683
|
94 |
|
2806
|
95 // Nonzero means we print |
|
|
96 static bool Vdefault_eval_print_flag = true; |
|
|
97 |
|
2620
|
98 // Nonzero means we're breaking out of a loop or function body. |
|
|
99 extern int breaking; |
|
|
100 |
|
|
101 // Nonzero means we're returning from a function. |
|
|
102 extern int returning; |
|
|
103 |
|
1820
|
104 // Nonzero means we are using readline. |
|
|
105 // (--no-line-editing) |
|
|
106 #if defined (USE_READLINE) |
|
|
107 int using_readline = 1; |
|
|
108 #else |
|
|
109 int using_readline = 0; |
|
|
110 #endif |
|
1683
|
111 |
|
2552
|
112 #if defined (USE_READLINE) |
|
|
113 // This is from readline's rltty.c: |
|
|
114 extern "C" void rl_deprep_terminal (void); |
|
|
115 #endif |
|
|
116 |
|
1683
|
117 // Nonzero means we printed messages about reading startup files. |
|
|
118 int reading_startup_message_printed = 0; |
|
|
119 |
|
|
120 // Command number, counting from the beginning of this session. |
|
|
121 int current_command_number = 1; |
|
|
122 |
|
|
123 // Nonzero means we are exiting via the builtin exit or quit functions. |
|
|
124 int quitting_gracefully = 0; |
|
|
125 |
|
|
126 // Current command to execute. |
|
|
127 tree_statement_list *global_command = 0; |
|
|
128 |
|
|
129 // Pointer to function that is currently being evaluated. |
|
2891
|
130 octave_user_function *curr_function = 0; |
|
1683
|
131 |
|
|
132 // Nonzero means input is coming from startup file. |
|
|
133 int input_from_startup_file = 0; |
|
|
134 |
|
|
135 // Nonzero means that input is coming from a file that was named on |
|
|
136 // the command line. |
|
|
137 int input_from_command_line_file = 1; |
|
|
138 |
|
1907
|
139 // Top level context (?) |
|
|
140 jmp_buf toplevel; |
|
|
141 |
|
1683
|
142 void |
|
2898
|
143 parse_and_execute (FILE *f) |
|
1683
|
144 { |
|
|
145 begin_unwind_frame ("parse_and_execute"); |
|
|
146 |
|
|
147 YY_BUFFER_STATE old_buf = current_buffer (); |
|
|
148 YY_BUFFER_STATE new_buf = create_buffer (f); |
|
|
149 |
|
2800
|
150 add_unwind_protect (restore_input_buffer, old_buf); |
|
|
151 add_unwind_protect (delete_input_buffer, new_buf); |
|
1683
|
152 |
|
|
153 switch_to_buffer (new_buf); |
|
|
154 |
|
|
155 unwind_protect_int (using_readline); |
|
|
156 unwind_protect_int (input_from_command_line_file); |
|
|
157 |
|
|
158 using_readline = 0; |
|
|
159 input_from_command_line_file = 0; |
|
|
160 |
|
|
161 unwind_protect_ptr (curr_sym_tab); |
|
|
162 |
|
|
163 int retval; |
|
|
164 do |
|
|
165 { |
|
|
166 reset_parser (); |
|
|
167 |
|
|
168 retval = yyparse (); |
|
|
169 |
|
|
170 if (retval == 0 && global_command) |
|
|
171 { |
|
2898
|
172 global_command->eval (); |
|
2620
|
173 |
|
1683
|
174 delete global_command; |
|
2620
|
175 |
|
|
176 global_command = 0; |
|
|
177 |
|
|
178 bool quit = (returning || breaking); |
|
|
179 |
|
|
180 if (returning) |
|
|
181 returning = 0; |
|
|
182 |
|
|
183 if (breaking) |
|
|
184 breaking--; |
|
|
185 |
|
|
186 if (error_state) |
|
|
187 { |
|
|
188 error ("near line %d of file `%s'", input_line_number, |
|
|
189 curr_fcn_file_full_name.c_str ()); |
|
|
190 |
|
|
191 break; |
|
|
192 } |
|
|
193 |
|
|
194 if (quit) |
|
|
195 break; |
|
1683
|
196 } |
|
|
197 } |
|
|
198 while (retval == 0); |
|
|
199 |
|
|
200 run_unwind_frame ("parse_and_execute"); |
|
|
201 } |
|
|
202 |
|
2517
|
203 static void |
|
|
204 safe_fclose (void *f) |
|
|
205 { |
|
|
206 if (f) |
|
2800
|
207 fclose (static_cast<FILE *> (f)); |
|
2517
|
208 } |
|
|
209 |
|
1683
|
210 void |
|
2898
|
211 parse_and_execute (const string& s, bool verbose, const char *warn_for) |
|
1683
|
212 { |
|
|
213 begin_unwind_frame ("parse_and_execute_2"); |
|
|
214 |
|
|
215 unwind_protect_int (reading_script_file); |
|
1755
|
216 unwind_protect_str (curr_fcn_file_full_name); |
|
1683
|
217 |
|
|
218 reading_script_file = 1; |
|
1755
|
219 curr_fcn_file_full_name = s; |
|
1683
|
220 |
|
|
221 FILE *f = get_input_from_file (s, 0); |
|
1750
|
222 |
|
1683
|
223 if (f) |
|
|
224 { |
|
2800
|
225 add_unwind_protect (safe_fclose, f); |
|
2517
|
226 |
|
1683
|
227 unwind_protect_int (input_line_number); |
|
|
228 unwind_protect_int (current_input_column); |
|
|
229 |
|
|
230 input_line_number = 0; |
|
|
231 current_input_column = 1; |
|
|
232 |
|
|
233 if (verbose) |
|
|
234 { |
|
|
235 cout << "reading commands from " << s << " ... "; |
|
|
236 reading_startup_message_printed = 1; |
|
|
237 cout.flush (); |
|
|
238 } |
|
|
239 |
|
2898
|
240 parse_and_execute (f); |
|
1683
|
241 |
|
|
242 if (verbose) |
|
|
243 cout << "done." << endl; |
|
|
244 } |
|
|
245 else if (warn_for) |
|
1750
|
246 error ("%s: unable to open file `%s'", warn_for, s.c_str ()); |
|
1683
|
247 |
|
|
248 run_unwind_frame ("parse_and_execute_2"); |
|
|
249 } |
|
|
250 |
|
1907
|
251 int |
|
|
252 main_loop (void) |
|
|
253 { |
|
|
254 // Allow the user to interrupt us without exiting. |
|
|
255 |
|
2016
|
256 octave_save_signal_mask (); |
|
|
257 |
|
1907
|
258 if (setjmp (toplevel) != 0) |
|
|
259 { |
|
|
260 raw_mode (0); |
|
|
261 |
|
|
262 cout << "\n"; |
|
2016
|
263 |
|
|
264 octave_restore_signal_mask (); |
|
1907
|
265 } |
|
|
266 |
|
|
267 can_interrupt = 1; |
|
|
268 |
|
2554
|
269 octave_catch_interrupts (); |
|
1907
|
270 |
|
|
271 // The big loop. |
|
|
272 |
|
|
273 int retval; |
|
|
274 do |
|
|
275 { |
|
|
276 curr_sym_tab = top_level_sym_tab; |
|
|
277 |
|
|
278 reset_parser (); |
|
|
279 |
|
|
280 retval = yyparse (); |
|
|
281 |
|
|
282 if (retval == 0 && global_command) |
|
|
283 { |
|
2898
|
284 global_command->eval (); |
|
2299
|
285 |
|
1907
|
286 delete global_command; |
|
2299
|
287 |
|
2620
|
288 global_command = 0; |
|
|
289 |
|
|
290 if (! (interactive || forced_interactive)) |
|
|
291 { |
|
|
292 bool quit = (returning || breaking); |
|
|
293 |
|
|
294 if (returning) |
|
|
295 returning = 0; |
|
|
296 |
|
|
297 if (breaking) |
|
|
298 breaking--; |
|
|
299 |
|
|
300 if (quit) |
|
|
301 break; |
|
|
302 } |
|
|
303 |
|
|
304 if (error_state) |
|
|
305 { |
|
|
306 if (! (interactive || forced_interactive)) |
|
|
307 break; |
|
|
308 } |
|
2299
|
309 else |
|
2620
|
310 { |
|
|
311 if (octave_completion_matches_called) |
|
|
312 octave_completion_matches_called = false; |
|
|
313 else |
|
|
314 current_command_number++; |
|
|
315 } |
|
1907
|
316 } |
|
|
317 } |
|
|
318 while (retval == 0); |
|
|
319 |
|
|
320 return retval; |
|
|
321 } |
|
|
322 |
|
1957
|
323 DEFUN (source, args, , |
|
1683
|
324 "source (FILE)\n\ |
|
|
325 \n\ |
|
|
326 Parse and execute the contents of FILE. Like executing commands in a\n\ |
|
|
327 script file but without requiring the file to be named `FILE.m'.") |
|
|
328 { |
|
2086
|
329 octave_value_list retval; |
|
1683
|
330 |
|
|
331 int nargin = args.length (); |
|
|
332 |
|
|
333 if (nargin == 1) |
|
|
334 { |
|
1750
|
335 string file = args(0).string_value (); |
|
1683
|
336 |
|
|
337 if (! error_state) |
|
|
338 { |
|
1750
|
339 file = oct_tilde_expand (file); |
|
1683
|
340 |
|
2898
|
341 parse_and_execute (file, false, "source"); |
|
1683
|
342 |
|
|
343 if (error_state) |
|
1751
|
344 error ("source: error sourcing file `%s'", file.c_str ()); |
|
1683
|
345 } |
|
|
346 else |
|
|
347 error ("source: expecting file name as argument"); |
|
|
348 } |
|
|
349 else |
|
|
350 print_usage ("source"); |
|
|
351 |
|
|
352 return retval; |
|
|
353 } |
|
|
354 |
|
|
355 // Fix up things before exiting. |
|
|
356 |
|
|
357 void |
|
|
358 clean_up_and_exit (int retval) |
|
|
359 { |
|
2552
|
360 #if defined (USE_READLINE) |
|
|
361 rl_deprep_terminal (); |
|
|
362 #else |
|
1683
|
363 raw_mode (0); |
|
2552
|
364 #endif |
|
1683
|
365 |
|
1799
|
366 octave_command_history.clean_up_and_save (); |
|
1683
|
367 |
|
|
368 close_plot_stream (); |
|
|
369 |
|
|
370 close_files (); |
|
|
371 |
|
|
372 cleanup_tmp_files (); |
|
|
373 |
|
|
374 if (!quitting_gracefully && (interactive || forced_interactive)) |
|
|
375 cout << "\n"; |
|
|
376 |
|
|
377 if (retval == EOF) |
|
|
378 retval = 0; |
|
|
379 |
|
|
380 exit (retval); |
|
|
381 |
|
|
382 // This is bogus but should prevent g++ from giving a warning saying |
|
|
383 // that this volatile function does return. |
|
|
384 |
|
|
385 panic_impossible (); |
|
|
386 } |
|
|
387 |
|
1957
|
388 DEFUN_TEXT (casesen, args, , |
|
1683
|
389 "casesen [on|off]") |
|
|
390 { |
|
2086
|
391 octave_value_list retval; |
|
1683
|
392 |
|
1755
|
393 int argc = args.length () + 1; |
|
|
394 |
|
1965
|
395 string_vector argv = args.make_argv ("casesen"); |
|
1683
|
396 |
|
1755
|
397 if (error_state) |
|
|
398 return retval; |
|
|
399 |
|
|
400 if (argc == 1 || (argc > 1 && argv[1] == "off")) |
|
1683
|
401 warning ("casesen: sorry, Octave is always case sensitive"); |
|
1755
|
402 else if (argc > 1 && argv[1] == "on") |
|
1683
|
403 ; // ok. |
|
|
404 else |
|
|
405 print_usage ("casesen"); |
|
|
406 |
|
|
407 return retval; |
|
|
408 } |
|
|
409 |
|
1957
|
410 DEFUN (computer, args, nargout, |
|
1683
|
411 "computer ():\n\ |
|
|
412 \n\ |
|
|
413 Have Octave ask the system, \"What kind of computer are you?\"") |
|
|
414 { |
|
2086
|
415 octave_value_list retval; |
|
1683
|
416 |
|
|
417 int nargin = args.length (); |
|
|
418 |
|
|
419 if (nargin != 0) |
|
|
420 warning ("computer: ignoring extra arguments"); |
|
|
421 |
|
2095
|
422 string msg; |
|
1683
|
423 |
|
|
424 if (strcmp (TARGET_HOST_TYPE, "unknown") == 0) |
|
2095
|
425 msg = "Hi Dave, I'm a HAL-9000"; |
|
1683
|
426 else |
|
2095
|
427 msg = TARGET_HOST_TYPE; |
|
1683
|
428 |
|
|
429 if (nargout == 0) |
|
2095
|
430 octave_stdout << msg << "\n"; |
|
1683
|
431 else |
|
2095
|
432 retval = msg; |
|
1683
|
433 |
|
|
434 return retval; |
|
|
435 } |
|
|
436 |
|
2068
|
437 DEFUN (quit, args, , |
|
|
438 "quit (STATUS): exit Octave gracefully, returning STATUS to the system.\n\ |
|
|
439 \n\ |
|
|
440 STATUS should be an integer value. If STATUS is missing, 0 is assumed.") |
|
1683
|
441 { |
|
2086
|
442 octave_value_list retval; |
|
2068
|
443 |
|
|
444 int exit_status = 0; |
|
|
445 |
|
|
446 quitting_gracefully = 1; |
|
|
447 |
|
1683
|
448 int nargin = args.length (); |
|
|
449 |
|
|
450 if (nargin > 0) |
|
2068
|
451 { |
|
|
452 // XXX FIXME XXX -- need a safe uniform way to do this. |
|
1683
|
453 |
|
2068
|
454 double tmp = args(0).double_value (); |
|
1683
|
455 |
|
2068
|
456 if (! error_state && ! xisnan (tmp)) |
|
|
457 exit_status = NINT (tmp); |
|
|
458 } |
|
|
459 |
|
|
460 clean_up_and_exit (exit_status); |
|
|
461 |
|
1683
|
462 return retval; |
|
|
463 } |
|
|
464 |
|
|
465 DEFALIAS (exit, quit); |
|
|
466 |
|
1957
|
467 DEFUN (warranty, , , |
|
1683
|
468 "warranty (): describe copying conditions") |
|
|
469 { |
|
2086
|
470 octave_value_list retval; |
|
1683
|
471 |
|
2095
|
472 octave_stdout << "\n" OCTAVE_NAME_VERSION_AND_COPYRIGHT "\n\n\ |
|
1683
|
473 This program is free software; you can redistribute it and/or modify\n\ |
|
|
474 it under the terms of the GNU General Public License as published by\n\ |
|
|
475 the Free Software Foundation; either version 2 of the License, or\n\ |
|
|
476 (at your option) any later version.\n\ |
|
|
477 \n\ |
|
|
478 This program is distributed in the hope that it will be useful,\n\ |
|
|
479 but WITHOUT ANY WARRANTY; without even the implied warranty of\n\ |
|
|
480 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n\ |
|
|
481 GNU General Public License for more details.\n\ |
|
|
482 \n\ |
|
|
483 You should have received a copy of the GNU General Public License\n\ |
|
|
484 along with this program. If not, write to the Free Software\n\ |
|
|
485 Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.\n\ |
|
|
486 \n"; |
|
|
487 |
|
|
488 return retval; |
|
|
489 } |
|
|
490 |
|
|
491 // XXX FIXME XXX -- this may not be the best place for these... |
|
|
492 |
|
2086
|
493 octave_value_list |
|
|
494 feval (const octave_value_list& args, int nargout) |
|
1683
|
495 { |
|
2086
|
496 octave_value_list retval; |
|
1683
|
497 |
|
2891
|
498 octave_symbol *fcn = is_valid_function (args(0), "feval", 1); |
|
|
499 |
|
1683
|
500 if (fcn) |
|
|
501 { |
|
|
502 int tmp_nargin = args.length () - 1; |
|
2086
|
503 octave_value_list tmp_args; |
|
1683
|
504 tmp_args.resize (tmp_nargin); |
|
|
505 for (int i = 0; i < tmp_nargin; i++) |
|
|
506 tmp_args(i) = args(i+1); |
|
2891
|
507 retval = fcn->eval (nargout, tmp_args); |
|
1683
|
508 } |
|
|
509 |
|
|
510 return retval; |
|
|
511 } |
|
|
512 |
|
1957
|
513 DEFUN (feval, args, nargout, |
|
1683
|
514 "feval (NAME, ARGS, ...)\n\ |
|
|
515 \n\ |
|
|
516 evaluate NAME as a function, passing ARGS as its arguments") |
|
|
517 { |
|
2086
|
518 octave_value_list retval; |
|
1683
|
519 |
|
|
520 int nargin = args.length (); |
|
|
521 |
|
|
522 if (nargin > 0) |
|
|
523 retval = feval (args, nargout); |
|
|
524 else |
|
|
525 print_usage ("feval"); |
|
|
526 |
|
|
527 return retval; |
|
|
528 } |
|
|
529 |
|
2086
|
530 static octave_value_list |
|
2898
|
531 eval_string (const string& s, bool silent, int& parse_status, int nargout) |
|
1683
|
532 { |
|
|
533 begin_unwind_frame ("eval_string"); |
|
|
534 |
|
|
535 unwind_protect_int (get_input_from_eval_string); |
|
|
536 unwind_protect_int (input_from_command_line_file); |
|
|
537 unwind_protect_ptr (global_command); |
|
1755
|
538 unwind_protect_str (current_eval_string); |
|
1683
|
539 |
|
|
540 get_input_from_eval_string = 1; |
|
|
541 input_from_command_line_file = 0; |
|
1755
|
542 current_eval_string = s; |
|
1683
|
543 |
|
|
544 YY_BUFFER_STATE old_buf = current_buffer (); |
|
|
545 YY_BUFFER_STATE new_buf = create_buffer (0); |
|
|
546 |
|
2800
|
547 add_unwind_protect (restore_input_buffer, old_buf); |
|
|
548 add_unwind_protect (delete_input_buffer, new_buf); |
|
1683
|
549 |
|
|
550 switch_to_buffer (new_buf); |
|
|
551 |
|
|
552 unwind_protect_ptr (curr_sym_tab); |
|
|
553 |
|
|
554 reset_parser (); |
|
|
555 |
|
|
556 parse_status = yyparse (); |
|
|
557 |
|
|
558 // Important to reset the idea of where input is coming from before |
|
|
559 // trying to eval the command we just parsed -- it might contain the |
|
|
560 // name of an function file that still needs to be parsed! |
|
|
561 |
|
|
562 tree_statement_list *command = global_command; |
|
|
563 |
|
|
564 run_unwind_frame ("eval_string"); |
|
|
565 |
|
2086
|
566 octave_value_list retval; |
|
1683
|
567 |
|
|
568 if (parse_status == 0 && command) |
|
|
569 { |
|
2898
|
570 retval = command->eval (silent, nargout); |
|
1683
|
571 delete command; |
|
|
572 } |
|
|
573 |
|
|
574 return retval; |
|
|
575 } |
|
|
576 |
|
2086
|
577 octave_value |
|
2898
|
578 eval_string (const string& s, bool silent, int& parse_status) |
|
1683
|
579 { |
|
2086
|
580 octave_value retval; |
|
1683
|
581 |
|
2898
|
582 octave_value_list tmp = eval_string (s, silent, parse_status, 1); |
|
1683
|
583 |
|
|
584 retval = tmp(0); |
|
|
585 |
|
|
586 return retval; |
|
|
587 } |
|
|
588 |
|
2086
|
589 static octave_value_list |
|
2898
|
590 eval_string (const octave_value& arg, bool silent, int& parse_status, |
|
2806
|
591 int nargout) |
|
1683
|
592 { |
|
1755
|
593 string s = arg.string_value (); |
|
1683
|
594 |
|
|
595 if (error_state) |
|
|
596 { |
|
|
597 error ("eval: expecting string argument"); |
|
|
598 return -1.0; |
|
|
599 } |
|
|
600 |
|
2898
|
601 return eval_string (s, silent, parse_status, nargout); |
|
1683
|
602 } |
|
|
603 |
|
1957
|
604 DEFUN (eval, args, nargout, |
|
1683
|
605 "eval (TRY, CATCH)\n\ |
|
|
606 \n\ |
|
|
607 Evaluate the string TRY as octave code. If that fails, evaluate the\n\ |
|
|
608 string CATCH.") |
|
|
609 { |
|
2086
|
610 octave_value_list retval; |
|
1683
|
611 |
|
|
612 int nargin = args.length (); |
|
|
613 |
|
|
614 if (nargin > 0) |
|
|
615 { |
|
|
616 begin_unwind_frame ("Feval"); |
|
|
617 |
|
|
618 if (nargin > 1) |
|
|
619 { |
|
|
620 unwind_protect_int (buffer_error_messages); |
|
|
621 buffer_error_messages = 1; |
|
|
622 } |
|
|
623 |
|
|
624 int parse_status = 0; |
|
|
625 |
|
2898
|
626 retval = eval_string (args(0), ! Vdefault_eval_print_flag, |
|
2808
|
627 parse_status, nargout); |
|
1683
|
628 |
|
|
629 if (nargin > 1 && (parse_status != 0 || error_state)) |
|
|
630 { |
|
|
631 error_state = 0; |
|
|
632 |
|
|
633 // Set up for letting the user print any messages from |
|
|
634 // errors that occurred in the first part of this eval(). |
|
|
635 |
|
|
636 buffer_error_messages = 0; |
|
|
637 bind_global_error_variable (); |
|
|
638 add_unwind_protect (clear_global_error_variable, 0); |
|
|
639 |
|
2808
|
640 eval_string (args(1), 0, parse_status, nargout); |
|
1683
|
641 |
|
2086
|
642 retval = octave_value_list (); |
|
1683
|
643 } |
|
|
644 |
|
|
645 run_unwind_frame ("Feval"); |
|
|
646 } |
|
|
647 else |
|
|
648 print_usage ("eval"); |
|
|
649 |
|
|
650 return retval; |
|
|
651 } |
|
|
652 |
|
|
653 // Execute a shell command. |
|
|
654 |
|
1965
|
655 static void |
|
|
656 cleanup_iprocstream (void *p) |
|
|
657 { |
|
2800
|
658 delete static_cast<iprocstream *> (p); |
|
1965
|
659 } |
|
|
660 |
|
2086
|
661 static octave_value_list |
|
2321
|
662 run_command_and_return_output (const string& cmd_str) |
|
2083
|
663 { |
|
2086
|
664 octave_value_list retval; |
|
2083
|
665 |
|
|
666 iprocstream *cmd = new iprocstream (cmd_str.c_str ()); |
|
|
667 |
|
|
668 add_unwind_protect (cleanup_iprocstream, cmd); |
|
|
669 |
|
|
670 int status = 127; |
|
|
671 |
|
|
672 if (cmd && *cmd) |
|
|
673 { |
|
|
674 ostrstream output_buf; |
|
2095
|
675 |
|
2083
|
676 char ch; |
|
|
677 while (cmd->get (ch)) |
|
2321
|
678 output_buf.put (ch); |
|
2083
|
679 |
|
|
680 status = cmd->close (); |
|
|
681 |
|
|
682 // The value in status is as returned by waitpid. If the |
|
|
683 // process exited normally, extract the actual exit status of |
|
|
684 // the command. Otherwise, return 127 as a failure code. |
|
|
685 |
|
2693
|
686 if (WIFEXITED (status)) |
|
|
687 status = WEXITSTATUS (status); |
|
2083
|
688 |
|
2321
|
689 output_buf << ends; |
|
2145
|
690 |
|
2321
|
691 char *msg = output_buf.str (); |
|
2083
|
692 |
|
2800
|
693 retval(1) = static_cast<double> (status); |
|
2321
|
694 retval(0) = msg; |
|
2083
|
695 |
|
2321
|
696 delete [] msg; |
|
2083
|
697 } |
|
|
698 else |
|
|
699 error ("unable to start subprocess for `%s'", cmd_str.c_str ()); |
|
|
700 |
|
|
701 run_unwind_protect (); |
|
|
702 |
|
|
703 return retval; |
|
|
704 } |
|
|
705 |
|
1957
|
706 DEFUN (system, args, nargout, |
|
2083
|
707 "system (STRING [, RETURN_OUTPUT] [, TYPE])\n\ |
|
|
708 \n\ |
|
|
709 Execute the shell command specified by STRING.\n\ |
|
|
710 \n\ |
|
|
711 If TYPE is \"async\", the process is started in the background and the\n\ |
|
|
712 pid of the child proces is returned immediately. Otherwise, the\n\ |
|
|
713 process is started, and Octave waits until it exits. If TYPE argument\n\ |
|
|
714 is omitted, a value of \"sync\" is assumed.\n\ |
|
|
715 \n\ |
|
|
716 If NARGIN == 2 (the actual value of RETURN_OUTPUT is irrelevant) and\n\ |
|
|
717 the subprocess is started synchronously, or if system() is called with\n\ |
|
|
718 NARGIN == 1 and NARGOUT > 0, the output from the command is returned.\n\ |
|
|
719 Otherwise, if the subprocess is executed synchronously, it's output is\n\ |
|
2321
|
720 sent to the standard output. To send the output of a command executed\n\ |
|
|
721 with system() through the pager, use a command like\n\ |
|
|
722 \n\ |
|
|
723 disp (system (CMD, 1));\n\ |
|
|
724 \n\ |
|
|
725 or\n\ |
|
|
726 \n\ |
|
2322
|
727 printf (\"%s\\n\", system (CMD, 1));") |
|
1683
|
728 { |
|
2086
|
729 octave_value_list retval; |
|
1683
|
730 |
|
|
731 int nargin = args.length (); |
|
|
732 |
|
2083
|
733 if (nargin > 0 && nargin < 4) |
|
1683
|
734 { |
|
2083
|
735 bool return_output = (nargout > 0 || nargin > 1); |
|
|
736 |
|
|
737 string cmd_str = args(0).string_value (); |
|
|
738 |
|
|
739 enum exec_type { sync, async }; |
|
|
740 |
|
|
741 exec_type type = sync; |
|
|
742 |
|
|
743 if (! error_state) |
|
|
744 { |
|
|
745 if (nargin > 2) |
|
|
746 { |
|
|
747 string type_str = args(2).string_value (); |
|
1683
|
748 |
|
2083
|
749 if (! error_state) |
|
|
750 { |
|
|
751 if (type_str == "sync") |
|
|
752 type = sync; |
|
|
753 else if (type_str == "async") |
|
|
754 type = async; |
|
|
755 else |
|
|
756 error ("system: third arg must be \"sync\" or \"async\""); |
|
|
757 } |
|
|
758 else |
|
|
759 error ("system: third argument must be a string"); |
|
|
760 } |
|
|
761 } |
|
|
762 else |
|
|
763 error ("system: expecting string as first argument"); |
|
1683
|
764 |
|
2083
|
765 if (! error_state) |
|
|
766 { |
|
|
767 if (type == async) |
|
|
768 { |
|
|
769 pid_t pid = fork (); |
|
|
770 |
|
|
771 if (pid < 0) |
|
|
772 error ("system: fork failed -- can't create child process"); |
|
|
773 else if (pid == 0) |
|
|
774 { |
|
|
775 system (cmd_str.c_str ()); |
|
|
776 exit (0); |
|
|
777 retval(0) = 0.0; |
|
|
778 } |
|
|
779 else |
|
2800
|
780 retval(0) = static_cast<double> (pid); |
|
2083
|
781 } |
|
2321
|
782 else if (return_output) |
|
|
783 retval = run_command_and_return_output (cmd_str); |
|
2083
|
784 else |
|
2321
|
785 { |
|
|
786 int status = system (cmd_str.c_str ()); |
|
|
787 |
|
|
788 // The value in status is as returned by waitpid. If |
|
|
789 // the process exited normally, extract the actual exit |
|
|
790 // status of the command. Otherwise, return 127 as a |
|
|
791 // failure code. |
|
|
792 |
|
2693
|
793 if (WIFEXITED (status)) |
|
|
794 status = WEXITSTATUS (status); |
|
2321
|
795 |
|
2800
|
796 retval = static_cast<double> (status); |
|
2321
|
797 } |
|
2083
|
798 } |
|
1683
|
799 } |
|
|
800 else |
|
2083
|
801 print_usage ("system"); |
|
1683
|
802 |
|
|
803 return retval; |
|
|
804 } |
|
|
805 |
|
|
806 DEFALIAS (shell_cmd, system); |
|
|
807 |
|
2614
|
808 // XXX FIXME XXX -- this should really be static, but that causes |
|
|
809 // problems on some systems. |
|
|
810 SLStack<string> octave_atexit_functions; |
|
2077
|
811 |
|
|
812 void |
|
|
813 do_octave_atexit (void) |
|
|
814 { |
|
|
815 while (! octave_atexit_functions.empty ()) |
|
|
816 { |
|
2086
|
817 octave_value_list fcn = octave_atexit_functions.pop (); |
|
2077
|
818 |
|
2859
|
819 feval (fcn, false); |
|
2077
|
820 } |
|
|
821 } |
|
|
822 |
|
2162
|
823 DEFUN (atexit, args, , |
|
2077
|
824 "atexit (NAME): register NAME as a function to call when Octave exits\n\ |
|
|
825 \n\ |
|
2802
|
826 Functions are called with no arguments in the reverse of the order in\n\ |
|
2077
|
827 which they were registered with atexit()") |
|
|
828 { |
|
2086
|
829 octave_value_list retval; |
|
2077
|
830 |
|
|
831 int nargin = args.length (); |
|
|
832 |
|
|
833 if (nargin == 1) |
|
|
834 { |
|
2475
|
835 #if defined (HAVE_ATEXIT) || defined (HAVE_ON_EXIT) |
|
2077
|
836 string arg = args(0).string_value (); |
|
|
837 |
|
|
838 if (! error_state) |
|
|
839 octave_atexit_functions.push (arg); |
|
|
840 else |
|
|
841 error ("atexit: argument must be a string"); |
|
2475
|
842 #else |
|
|
843 gripe_not_supported ("atexit"); |
|
|
844 #endif |
|
2077
|
845 } |
|
|
846 else |
|
|
847 print_usage ("atexit"); |
|
|
848 |
|
|
849 return retval; |
|
|
850 } |
|
|
851 |
|
2689
|
852 DEFUN (octave_config_info, args, , |
|
|
853 "octave_config_info (OPTION)\n\ |
|
|
854 \n\ |
|
|
855 If OPTION is a string, return the configuration information for the\n\ |
|
|
856 specified option.\n\ |
|
|
857 \n\ |
|
|
858 With no arguments, return a structure containing configuration\n\ |
|
|
859 information.") |
|
2162
|
860 { |
|
2689
|
861 octave_value retval; |
|
|
862 |
|
2696
|
863 #if defined (WITH_DYNAMIC_LINKING) && (defined (WITH_DL) || defined (WITH_SHL)) |
|
2689
|
864 bool octave_supports_dynamic_linking = true; |
|
|
865 #else |
|
|
866 bool octave_supports_dynamic_linking = false; |
|
|
867 #endif |
|
|
868 |
|
2162
|
869 Octave_map m; |
|
|
870 |
|
|
871 m ["default_pager"] = DEFAULT_PAGER; |
|
|
872 m ["prefix"] = OCTAVE_PREFIX; |
|
|
873 m ["exec_prefix"] = OCTAVE_EXEC_PREFIX; |
|
|
874 m ["datadir"] = OCTAVE_DATADIR; |
|
2800
|
875 m ["dld"] = static_cast<double> (octave_supports_dynamic_linking); |
|
2162
|
876 m ["libdir"] = OCTAVE_LIBDIR; |
|
|
877 m ["bindir"] = OCTAVE_BINDIR; |
|
|
878 m ["infodir"] = OCTAVE_INFODIR; |
|
|
879 m ["fcnfiledir"] = OCTAVE_FCNFILEDIR; |
|
|
880 m ["localfcnfiledir"] = OCTAVE_LOCALFCNFILEDIR; |
|
|
881 m ["localstartupfiledir"] = OCTAVE_LOCALSTARTUPFILEDIR; |
|
|
882 m ["startupfiledir"] = OCTAVE_STARTUPFILEDIR; |
|
|
883 m ["localfcnfilepath"] = OCTAVE_LOCALFCNFILEPATH; |
|
|
884 m ["archlibdir"] = OCTAVE_ARCHLIBDIR; |
|
2439
|
885 m ["localarchlibdir"] = OCTAVE_LOCALARCHLIBDIR; |
|
2162
|
886 m ["octfiledir"] = OCTAVE_OCTFILEDIR; |
|
|
887 m ["localoctfilepath"] = OCTAVE_LOCALOCTFILEPATH; |
|
|
888 m ["fcnfilepath"] = OCTAVE_FCNFILEPATH; |
|
|
889 m ["imagepath"] = OCTAVE_IMAGEPATH; |
|
|
890 m ["target_host_type"] = TARGET_HOST_TYPE; |
|
|
891 m ["configure_options"] = config_opts; |
|
|
892 m ["F77"] = F77; |
|
|
893 m ["FFLAGS"] = FFLAGS; |
|
|
894 m ["FPICFLAG"] = FPICFLAG; |
|
|
895 m ["F2C"] = F2C; |
|
|
896 m ["F2CFLAGS"] = F2CFLAGS; |
|
|
897 m ["FLIBS"] = FLIBS; |
|
|
898 m ["CPPFLAGS"] = CPPFLAGS; |
|
|
899 m ["INCFLAGS"] = INCFLAGS; |
|
|
900 m ["CC"] = CC " " CC_VERSION; |
|
|
901 m ["CFLAGS"] = CFLAGS; |
|
|
902 m ["CPICFLAG"] = CPICFLAG; |
|
|
903 m ["CXX"] = CXX " " CXX_VERSION; |
|
|
904 m ["CXXFLAGS"] = CXXFLAGS; |
|
|
905 m ["CXXPICFLAG"] = CXXPICFLAG; |
|
|
906 m ["LDFLAGS"] = LDFLAGS; |
|
|
907 m ["LIBFLAGS"] = LIBFLAGS; |
|
2675
|
908 m ["RLD_FLAG"] = RLD_FLAG; |
|
2162
|
909 m ["TERMLIBS"] = TERMLIBS; |
|
|
910 m ["LIBS"] = LIBS; |
|
|
911 m ["LEXLIB"] = LEXLIB; |
|
|
912 m ["LIBPLPLOT"] = LIBPLPLOT; |
|
|
913 m ["LIBDLFCN"] = LIBDLFCN; |
|
|
914 m ["DEFS"] = DEFS; |
|
|
915 |
|
2689
|
916 int nargin = args.length (); |
|
|
917 |
|
|
918 if (nargin == 1) |
|
|
919 { |
|
|
920 string arg = args(0).string_value (); |
|
|
921 |
|
|
922 if (! error_state) |
|
|
923 retval = octave_value (m [arg.c_str ()]); |
|
|
924 } |
|
|
925 else if (nargin == 0) |
|
|
926 retval = octave_value (m); |
|
|
927 else |
|
|
928 print_usage ("octave_config_info"); |
|
|
929 |
|
|
930 return retval; |
|
2162
|
931 } |
|
|
932 |
|
1683
|
933 #if defined (__GNUG__) && defined (DEBUG_NEW_DELETE) |
|
2806
|
934 |
|
1683
|
935 int debug_new_delete = 0; |
|
|
936 |
|
|
937 typedef void (*vfp)(void); |
|
|
938 extern vfp __new_handler; |
|
|
939 |
|
|
940 void * |
|
|
941 __builtin_new (size_t sz) |
|
|
942 { |
|
|
943 void *p; |
|
|
944 |
|
|
945 /* malloc (0) is unpredictable; avoid it. */ |
|
|
946 if (sz == 0) |
|
|
947 sz = 1; |
|
2800
|
948 p = malloc (sz); |
|
1683
|
949 while (p == 0) |
|
|
950 { |
|
|
951 (*__new_handler) (); |
|
2800
|
952 p = malloc (sz); |
|
1683
|
953 } |
|
|
954 |
|
|
955 if (debug_new_delete) |
|
|
956 cout << "__builtin_new: " << p << endl; |
|
|
957 |
|
|
958 return p; |
|
|
959 } |
|
|
960 |
|
|
961 void |
|
|
962 __builtin_delete (void *ptr) |
|
|
963 { |
|
|
964 if (debug_new_delete) |
|
|
965 cout << "__builtin_delete: " << ptr << endl; |
|
|
966 |
|
|
967 if (ptr) |
|
|
968 free (ptr); |
|
|
969 } |
|
2806
|
970 |
|
1683
|
971 #endif |
|
|
972 |
|
2806
|
973 static int |
|
|
974 default_eval_print_flag (void) |
|
|
975 { |
|
|
976 Vdefault_eval_print_flag = check_preference ("default_eval_print_flag"); |
|
|
977 |
|
|
978 return 0; |
|
|
979 } |
|
|
980 |
|
|
981 void |
|
|
982 symbols_of_toplev (void) |
|
|
983 { |
|
|
984 DEFVAR (default_eval_print_flag, 1.0, 0, default_eval_print_flag, |
|
|
985 "If the value of this variable is nonzero, Octave will print the\n\ |
|
|
986 results of commands executed by eval() that do not end with semicolons."); |
|
|
987 |
|
|
988 } |
|
|
989 |
|
1683
|
990 /* |
|
|
991 ;;; Local Variables: *** |
|
|
992 ;;; mode: C++ *** |
|
|
993 ;;; End: *** |
|
|
994 */ |
