|
1
|
1 /* |
|
|
2 |
|
2847
|
3 Copyright (C) 1996, 1997 John W. Eaton |
|
1
|
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 |
|
5307
|
19 Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
|
|
20 02110-1301, USA. |
|
1
|
21 |
|
|
22 */ |
|
|
23 |
|
240
|
24 #ifdef HAVE_CONFIG_H |
|
1192
|
25 #include <config.h> |
|
1
|
26 #endif |
|
|
27 |
|
1346
|
28 #include <cfloat> |
|
3124
|
29 #include <cmath> |
|
1343
|
30 #include <cstddef> |
|
1346
|
31 #include <cstdio> |
|
1343
|
32 #include <cstdlib> |
|
|
33 #include <cstring> |
|
|
34 |
|
3503
|
35 #include <iostream> |
|
1728
|
36 #include <string> |
|
|
37 |
|
1350
|
38 #ifdef HAVE_UNISTD_H |
|
2442
|
39 #ifdef HAVE_SYS_TYPES_H |
|
529
|
40 #include <sys/types.h> |
|
2442
|
41 #endif |
|
529
|
42 #include <unistd.h> |
|
|
43 #endif |
|
1
|
44 |
|
1430
|
45 #if defined (HAVE_TERMIOS_H) |
|
|
46 #include <termios.h> |
|
|
47 #elif defined (HAVE_TERMIO_H) |
|
|
48 #include <termio.h> |
|
|
49 #elif defined (HAVE_SGTTY_H) |
|
|
50 #include <sgtty.h> |
|
4067
|
51 #endif |
|
|
52 |
|
|
53 #if defined (HAVE_CONIO_H) |
|
|
54 #include <conio.h> |
|
1430
|
55 #endif |
|
|
56 |
|
3248
|
57 #if defined (HAVE_SYS_IOCTL_H) |
|
|
58 #include <sys/ioctl.h> |
|
|
59 #endif |
|
|
60 |
|
1463
|
61 #if defined (HAVE_FLOATINGPOINT_H) |
|
|
62 #include <floatingpoint.h> |
|
|
63 #endif |
|
|
64 |
|
2508
|
65 #if defined (HAVE_IEEEFP_H) |
|
|
66 #include <ieeefp.h> |
|
|
67 #endif |
|
|
68 |
|
1463
|
69 #if !defined (HAVE_GETHOSTNAME) && defined (HAVE_SYS_UTSNAME_H) |
|
|
70 #include <sys/utsname.h> |
|
|
71 #endif |
|
|
72 |
|
2926
|
73 #include "cmd-edit.h" |
|
|
74 #include "file-ops.h" |
|
2893
|
75 #include "lo-mappers.h" |
|
2317
|
76 #include "mach-info.h" |
|
2926
|
77 #include "oct-env.h" |
|
5451
|
78 #include "quit.h" |
|
1769
|
79 |
|
6208
|
80 #include "Cell.h" |
|
1352
|
81 #include "defun.h" |
|
|
82 #include "error.h" |
|
529
|
83 #include "input.h" |
|
1755
|
84 #include "oct-obj.h" |
|
2370
|
85 #include "ov.h" |
|
3234
|
86 #include "pager.h" |
|
5770
|
87 #include "sighandlers.h" |
|
1352
|
88 #include "sysdep.h" |
|
1755
|
89 #include "toplev.h" |
|
529
|
90 #include "utils.h" |
|
|
91 |
|
|
92 #ifndef STDIN_FILENO |
|
|
93 #define STDIN_FILENO 1 |
|
|
94 #endif |
|
444
|
95 |
|
2508
|
96 #if defined (__386BSD__) || defined (__FreeBSD__) |
|
|
97 static void |
|
|
98 BSD_init (void) |
|
|
99 { |
|
|
100 #if defined (HAVE_FLOATINGPOINT_H) |
|
|
101 // Disable trapping on common exceptions. |
|
4164
|
102 #ifndef FP_X_DNML |
|
|
103 #define FP_X_DNML 0 |
|
|
104 #endif |
|
2508
|
105 fpsetmask (~(FP_X_OFL|FP_X_INV|FP_X_DZ|FP_X_DNML|FP_X_UFL|FP_X_IMP)); |
|
|
106 #endif |
|
|
107 } |
|
|
108 #endif |
|
|
109 |
|
6080
|
110 static void |
|
|
111 w32_set_octave_home (void) |
|
|
112 { |
|
|
113 #if defined (__WIN32__) && ! defined (_POSIX_VERSION) |
|
|
114 int n = 1024; |
|
|
115 |
|
6086
|
116 std::string bin_dir (n, '\0'); |
|
6080
|
117 |
|
|
118 while (true) |
|
|
119 { |
|
|
120 int status = GetModuleFileName (0, &bin_dir[0], n); |
|
|
121 |
|
|
122 if (status < n) |
|
|
123 { |
|
|
124 bin_dir.resize (status); |
|
|
125 break; |
|
|
126 } |
|
|
127 else |
|
|
128 { |
|
|
129 n *= 2; |
|
|
130 bin_dir.resize (n); |
|
|
131 } |
|
|
132 } |
|
|
133 |
|
|
134 if (! bin_dir.empty ()) |
|
|
135 { |
|
|
136 size_t pos = bin_dir.rfind ("\\bin\\"); |
|
|
137 |
|
|
138 if (pos != NPOS) |
|
|
139 octave_env::putenv ("OCTAVE_HOME", bin_dir.substr (0, pos)); |
|
|
140 } |
|
|
141 #endif |
|
|
142 } |
|
|
143 |
|
5451
|
144 void |
|
|
145 w32_set_quiet_shutdown (void) |
|
|
146 { |
|
|
147 #if defined (__WIN32__) && ! defined (_POSIX_VERSION) |
|
|
148 // Let the user close the console window or shutdown without the |
|
|
149 // pesky dialog. |
|
|
150 // |
|
5775
|
151 // FIXME -- should this be user configurable? |
|
5451
|
152 SetProcessShutdownParameters (0x280, SHUTDOWN_NORETRY); |
|
|
153 #endif |
|
|
154 } |
|
|
155 |
|
|
156 #if defined (__WIN32__) && ! defined (_POSIX_VERSION) |
|
|
157 void |
|
|
158 MINGW_signal_cleanup (void) |
|
|
159 { |
|
5455
|
160 w32_set_quiet_shutdown (); |
|
5451
|
161 |
|
5455
|
162 w32_raise_final (); |
|
5451
|
163 } |
|
|
164 #endif |
|
|
165 |
|
|
166 #if defined (__MINGW32__) |
|
|
167 static void |
|
|
168 MINGW_init (void) |
|
|
169 { |
|
6080
|
170 w32_set_octave_home (); |
|
|
171 |
|
5451
|
172 // Init mutex to protect setjmp/longjmp and get main thread context |
|
|
173 w32_sigint_init (); |
|
|
174 |
|
|
175 w32_set_quiet_shutdown (); |
|
|
176 } |
|
|
177 #endif |
|
|
178 |
|
6080
|
179 #if defined (_MSC_VER) |
|
|
180 static void |
|
|
181 MSVC_init (void) |
|
|
182 { |
|
|
183 w32_set_octave_home (); |
|
6135
|
184 |
|
|
185 // Init mutex to protect setjmp/longjmp and get main thread context |
|
|
186 w32_sigint_init (); |
|
|
187 |
|
|
188 w32_set_quiet_shutdown (); |
|
6080
|
189 } |
|
|
190 #endif |
|
|
191 |
|
4091
|
192 #if defined (__CYGWIN__) |
|
|
193 |
|
|
194 #include <limits.h> |
|
|
195 #include <sys/cygwin.h> |
|
|
196 |
|
|
197 static void |
|
|
198 CYGWIN_init (void) |
|
|
199 { |
|
4470
|
200 // Make sure TMPDIR contains an absolute windows path. Use '/' |
|
|
201 // rather than '\\' so that sh expansion won't mess file names. |
|
|
202 |
|
4091
|
203 std::string tmpdir = octave_env::getenv ("TMPDIR"); |
|
|
204 |
|
|
205 if (tmpdir.empty ()) |
|
4470
|
206 tmpdir = "/tmp"; |
|
|
207 |
|
|
208 char buf [PATH_MAX]; |
|
4091
|
209 |
|
4470
|
210 if (cygwin32_conv_to_full_win32_path (tmpdir.c_str (), buf) < 0) |
|
|
211 panic ("CYGWIN_init: unable to convert TMPDIR (= \"%s\") to Windows directory name", |
|
|
212 tmpdir.c_str ()); |
|
|
213 else |
|
|
214 { |
|
|
215 tmpdir = buf; |
|
4091
|
216 |
|
4470
|
217 for (size_t i = 0; i < tmpdir.length (); i++) |
|
|
218 if (tmpdir[i] == '\\') |
|
|
219 tmpdir[i] = '/'; |
|
4091
|
220 } |
|
4470
|
221 |
|
|
222 octave_env::putenv ("TMPDIR", tmpdir); |
|
4091
|
223 } |
|
|
224 #endif |
|
|
225 |
|
4284
|
226 #if defined (__DECCXX) |
|
|
227 |
|
|
228 // These don't seem to be instantiated automatically... |
|
|
229 |
|
|
230 template std::istream& |
|
|
231 std::operator >> (std::istream&, std::complex<double>&); |
|
|
232 |
|
|
233 template std::string& |
|
|
234 std::string::append (const std::string&, size_t, size_t); |
|
|
235 |
|
|
236 #endif |
|
|
237 |
|
2610
|
238 #if defined (NeXT) |
|
1
|
239 extern "C" |
|
|
240 { |
|
|
241 typedef void (*_cplus_fcn_int) (int); |
|
|
242 extern void (*malloc_error (_cplus_fcn_int)) (int); |
|
|
243 } |
|
|
244 |
|
|
245 static void |
|
|
246 malloc_handler (int code) |
|
|
247 { |
|
|
248 if (code == 5) |
|
217
|
249 warning ("hopefully recoverable malloc error: freeing wild pointer"); |
|
1
|
250 else |
|
2926
|
251 panic ("probably irrecoverable malloc error: code %d", code); |
|
1
|
252 } |
|
|
253 |
|
|
254 static void |
|
|
255 NeXT_init (void) |
|
|
256 { |
|
|
257 malloc_error (malloc_handler); |
|
|
258 } |
|
3333
|
259 #endif |
|
1
|
260 |
|
2546
|
261 #if defined (__EMX__) |
|
|
262 OS2_init (void) |
|
|
263 { |
|
|
264 _control87 ((EM_INVALID | EM_DENORMAL | EM_ZERODIVIDE | EM_OVERFLOW |
|
|
265 | EM_UNDERFLOW | EM_INEXACT), MCW_EM); |
|
|
266 } |
|
|
267 #endif |
|
|
268 |
|
2508
|
269 #if defined (SCO) |
|
|
270 static void |
|
|
271 SCO_init (void) |
|
|
272 { |
|
|
273 #if defined (HAVE_IEEEFP_H) |
|
|
274 // Disable trapping on common exceptions. |
|
|
275 fpsetmask (~(FP_X_OFL|FP_X_INV|FP_X_DZ|FP_X_DNML|FP_X_UFL|FP_X_IMP)); |
|
|
276 #endif |
|
|
277 } |
|
|
278 #endif |
|
|
279 |
|
1
|
280 void |
|
|
281 sysdep_init (void) |
|
|
282 { |
|
959
|
283 #if defined (__386BSD__) || defined (__FreeBSD__) |
|
2508
|
284 BSD_init (); |
|
4091
|
285 #elif defined (__CYGWIN__) |
|
|
286 CYGWIN_init (); |
|
5451
|
287 #elif defined (__MINGW32__) |
|
|
288 MINGW_init (); |
|
6080
|
289 #elif defined (_MSC_VER) |
|
|
290 MSVC_init (); |
|
2610
|
291 #elif defined (NeXT) |
|
1
|
292 NeXT_init (); |
|
2610
|
293 #elif defined (__EMX__) |
|
2546
|
294 OS2_init (); |
|
2508
|
295 #elif defined (SCO) |
|
|
296 SCO_init (); |
|
1
|
297 #endif |
|
444
|
298 |
|
|
299 octave_ieee_init (); |
|
1
|
300 } |
|
|
301 |
|
5451
|
302 void |
|
|
303 sysdep_cleanup (void) |
|
|
304 { |
|
|
305 MINGW_SIGNAL_CLEANUP (); |
|
|
306 } |
|
|
307 |
|
767
|
308 // Set terminal in raw mode. From less-177. |
|
|
309 // |
|
|
310 // Change terminal to "raw mode", or restore to "normal" mode. |
|
|
311 // "Raw mode" means |
|
|
312 // 1. An outstanding read will complete on receipt of a single keystroke. |
|
|
313 // 2. Input is not echoed. |
|
|
314 // 3. On output, \n is mapped to \r\n. |
|
|
315 // 4. \t is NOT expanded into spaces. |
|
|
316 // 5. Signal-causing characters such as ctrl-C (interrupt), |
|
|
317 // etc. are NOT disabled. |
|
|
318 // It doesn't matter whether an input \n is mapped to \r, or vice versa. |
|
|
319 |
|
529
|
320 void |
|
3657
|
321 raw_mode (bool on, bool wait) |
|
529
|
322 { |
|
3657
|
323 static bool curr_on = false; |
|
529
|
324 |
|
|
325 int tty_fd = STDIN_FILENO; |
|
|
326 if (! isatty (tty_fd)) |
|
|
327 { |
|
|
328 if (interactive) |
|
|
329 error ("stdin is not a tty!"); |
|
|
330 return; |
|
|
331 } |
|
|
332 |
|
|
333 if (on == curr_on) |
|
|
334 return; |
|
|
335 |
|
|
336 #if defined (HAVE_TERMIOS_H) |
|
|
337 { |
|
|
338 struct termios s; |
|
|
339 static struct termios save_term; |
|
|
340 |
|
|
341 if (on) |
|
|
342 { |
|
1358
|
343 // Get terminal modes. |
|
529
|
344 |
|
|
345 tcgetattr (tty_fd, &s); |
|
|
346 |
|
1358
|
347 // Save modes and set certain variables dependent on modes. |
|
529
|
348 |
|
|
349 save_term = s; |
|
|
350 // ospeed = s.c_cflag & CBAUD; |
|
|
351 // erase_char = s.c_cc[VERASE]; |
|
|
352 // kill_char = s.c_cc[VKILL]; |
|
|
353 |
|
1358
|
354 // Set the modes to the way we want them. |
|
529
|
355 |
|
|
356 s.c_lflag &= ~(ICANON|ECHO|ECHOE|ECHOK|ECHONL); |
|
|
357 s.c_oflag |= (OPOST|ONLCR); |
|
|
358 #if defined (OCRNL) |
|
|
359 s.c_oflag &= ~(OCRNL); |
|
|
360 #endif |
|
|
361 #if defined (ONOCR) |
|
|
362 s.c_oflag &= ~(ONOCR); |
|
|
363 #endif |
|
|
364 #if defined (ONLRET) |
|
|
365 s.c_oflag &= ~(ONLRET); |
|
|
366 #endif |
|
3658
|
367 s.c_cc[VMIN] = wait ? 1 : 0; |
|
529
|
368 s.c_cc[VTIME] = 0; |
|
|
369 } |
|
|
370 else |
|
|
371 { |
|
1358
|
372 // Restore saved modes. |
|
|
373 |
|
529
|
374 s = save_term; |
|
|
375 } |
|
3658
|
376 |
|
529
|
377 tcsetattr (tty_fd, TCSAFLUSH, &s); |
|
|
378 } |
|
|
379 #elif defined (HAVE_TERMIO_H) |
|
|
380 { |
|
|
381 struct termio s; |
|
|
382 static struct termio save_term; |
|
|
383 |
|
|
384 if (on) |
|
|
385 { |
|
1358
|
386 // Get terminal modes. |
|
529
|
387 |
|
|
388 ioctl (tty_fd, TCGETA, &s); |
|
|
389 |
|
1358
|
390 // Save modes and set certain variables dependent on modes. |
|
529
|
391 |
|
|
392 save_term = s; |
|
|
393 // ospeed = s.c_cflag & CBAUD; |
|
|
394 // erase_char = s.c_cc[VERASE]; |
|
|
395 // kill_char = s.c_cc[VKILL]; |
|
|
396 |
|
1358
|
397 // Set the modes to the way we want them. |
|
529
|
398 |
|
|
399 s.c_lflag &= ~(ICANON|ECHO|ECHOE|ECHOK|ECHONL); |
|
|
400 s.c_oflag |= (OPOST|ONLCR); |
|
|
401 #if defined (OCRNL) |
|
|
402 s.c_oflag &= ~(OCRNL); |
|
|
403 #endif |
|
|
404 #if defined (ONOCR) |
|
|
405 s.c_oflag &= ~(ONOCR); |
|
|
406 #endif |
|
|
407 #if defined (ONLRET) |
|
|
408 s.c_oflag &= ~(ONLRET); |
|
|
409 #endif |
|
3658
|
410 s.c_cc[VMIN] = wait ? 1 : 0; |
|
529
|
411 } |
|
|
412 else |
|
|
413 { |
|
1358
|
414 // Restore saved modes. |
|
|
415 |
|
529
|
416 s = save_term; |
|
|
417 } |
|
3658
|
418 |
|
529
|
419 ioctl (tty_fd, TCSETAW, &s); |
|
|
420 } |
|
|
421 #elif defined (HAVE_SGTTY_H) |
|
|
422 { |
|
|
423 struct sgttyb s; |
|
|
424 static struct sgttyb save_term; |
|
|
425 |
|
|
426 if (on) |
|
|
427 { |
|
1358
|
428 // Get terminal modes. |
|
529
|
429 |
|
|
430 ioctl (tty_fd, TIOCGETP, &s); |
|
|
431 |
|
1358
|
432 // Save modes and set certain variables dependent on modes. |
|
529
|
433 |
|
|
434 save_term = s; |
|
|
435 // ospeed = s.sg_ospeed; |
|
|
436 // erase_char = s.sg_erase; |
|
|
437 // kill_char = s.sg_kill; |
|
|
438 |
|
1358
|
439 // Set the modes to the way we want them. |
|
529
|
440 |
|
|
441 s.sg_flags |= CBREAK; |
|
|
442 s.sg_flags &= ~(ECHO); |
|
|
443 } |
|
|
444 else |
|
|
445 { |
|
1358
|
446 // Restore saved modes. |
|
|
447 |
|
529
|
448 s = save_term; |
|
|
449 } |
|
3658
|
450 |
|
529
|
451 ioctl (tty_fd, TIOCSETN, &s); |
|
|
452 } |
|
|
453 #else |
|
4064
|
454 warning ("no support for raw mode console I/O on this system"); |
|
|
455 |
|
|
456 // Make sure the current mode doesn't toggle. |
|
|
457 on = curr_on; |
|
529
|
458 #endif |
|
|
459 |
|
|
460 curr_on = on; |
|
|
461 } |
|
|
462 |
|
767
|
463 // Read one character from the terminal. |
|
|
464 |
|
529
|
465 int |
|
4067
|
466 octave_kbhit (bool wait) |
|
529
|
467 { |
|
4067
|
468 #ifdef HAVE__KBHIT |
|
4081
|
469 int c = (! wait && ! _kbhit ()) ? 0 : std::cin.get (); |
|
4067
|
470 #else |
|
3658
|
471 raw_mode (true, wait); |
|
|
472 |
|
5770
|
473 // Get current handler. |
|
|
474 octave_interrupt_handler saved_interrupt_handler |
|
|
475 = octave_ignore_interrupts (); |
|
|
476 |
|
|
477 // Restore it, disabling system call restarts (if possible) so the |
|
|
478 // read can be interrupted. |
|
|
479 |
|
|
480 octave_set_interrupt_handler (saved_interrupt_handler, false); |
|
|
481 |
|
3658
|
482 int c = std::cin.get (); |
|
5770
|
483 |
|
3658
|
484 if (std::cin.fail () || std::cin.eof ()) |
|
|
485 std::cin.clear (); |
|
|
486 |
|
5770
|
487 // Restore it, enabling system call restarts (if possible). |
|
|
488 octave_set_interrupt_handler (saved_interrupt_handler, true); |
|
|
489 |
|
3658
|
490 raw_mode (false, true); |
|
4067
|
491 #endif |
|
3658
|
492 |
|
529
|
493 return c; |
|
|
494 } |
|
|
495 |
|
1957
|
496 DEFUN (clc, , , |
|
3332
|
497 "-*- texinfo -*-\n\ |
|
|
498 @deftypefn {Built-in Function} {} clc ()\n\ |
|
|
499 @deftypefnx {Built-in Function} {} home ()\n\ |
|
|
500 Clear the terminal screen and move the cursor to the upper left corner.\n\ |
|
3333
|
501 @end deftypefn") |
|
529
|
502 { |
|
2926
|
503 command_editor::clear_screen (); |
|
529
|
504 |
|
2926
|
505 return octave_value_list (); |
|
529
|
506 } |
|
|
507 |
|
549
|
508 DEFALIAS (home, clc); |
|
|
509 |
|
1957
|
510 DEFUN (getenv, args, , |
|
3301
|
511 "-*- texinfo -*-\n\ |
|
|
512 @deftypefn {Built-in Function} {} getenv (@var{var})\n\ |
|
|
513 Return the value of the environment variable @var{var}. For example,\n\ |
|
|
514 \n\ |
|
|
515 @example\n\ |
|
|
516 getenv (\"PATH\")\n\ |
|
|
517 @end example\n\ |
|
|
518 \n\ |
|
|
519 @noindent\n\ |
|
|
520 returns a string containing the value of your path.\n\ |
|
|
521 @end deftypefn") |
|
529
|
522 { |
|
4233
|
523 octave_value retval; |
|
529
|
524 |
|
|
525 int nargin = args.length (); |
|
|
526 |
|
712
|
527 if (nargin == 1) |
|
529
|
528 { |
|
3523
|
529 std::string name = args(0).string_value (); |
|
636
|
530 |
|
|
531 if (! error_state) |
|
2926
|
532 retval = octave_env::getenv (name); |
|
529
|
533 } |
|
|
534 else |
|
5823
|
535 print_usage (); |
|
529
|
536 |
|
|
537 return retval; |
|
|
538 } |
|
|
539 |
|
1957
|
540 DEFUN (putenv, args, , |
|
3301
|
541 "-*- texinfo -*-\n\ |
|
|
542 @deftypefn {Built-in Function} {} putenv (@var{var}, @var{value})\n\ |
|
|
543 Set the value of the environment variable @var{var} to @var{value}.\n\ |
|
|
544 @end deftypefn") |
|
1706
|
545 { |
|
2086
|
546 octave_value_list retval; |
|
1706
|
547 |
|
|
548 int nargin = args.length (); |
|
|
549 |
|
|
550 if (nargin == 2) |
|
|
551 { |
|
3523
|
552 std::string var = args(0).string_value (); |
|
1706
|
553 |
|
|
554 if (! error_state) |
|
|
555 { |
|
3523
|
556 std::string val = args(1).string_value (); |
|
1706
|
557 |
|
|
558 if (! error_state) |
|
2926
|
559 octave_env::putenv (var, val); |
|
1706
|
560 else |
|
|
561 error ("putenv: second argument should be a string"); |
|
|
562 } |
|
|
563 else |
|
|
564 error ("putenv: first argument should be a string"); |
|
|
565 } |
|
|
566 else |
|
5823
|
567 print_usage (); |
|
1706
|
568 |
|
|
569 return retval; |
|
|
570 } |
|
|
571 |
|
5775
|
572 // FIXME -- perhaps kbhit should also be able to print a prompt? |
|
3372
|
573 |
|
3657
|
574 DEFUN (kbhit, args, , |
|
3372
|
575 "-*- texinfo -*-\n\ |
|
|
576 @deftypefn {Built-in Function} {} kbhit ()\n\ |
|
3657
|
577 Read a single keystroke from the keyboard. If called with one\n\ |
|
|
578 argument, don't wait for a keypress. For example,\n\ |
|
3372
|
579 \n\ |
|
|
580 @example\n\ |
|
|
581 x = kbhit ();\n\ |
|
|
582 @end example\n\ |
|
|
583 \n\ |
|
|
584 @noindent\n\ |
|
|
585 will set @var{x} to the next character typed at the keyboard as soon as\n\ |
|
|
586 it is typed.\n\ |
|
3657
|
587 \n\ |
|
|
588 @example\n\ |
|
|
589 x = kbhit (1);\n\ |
|
|
590 @end example\n\ |
|
|
591 \n\ |
|
|
592 @noindent\n\ |
|
|
593 identical to the above example, but don't wait for a keypress,\n\ |
|
|
594 returning the empty string if no key is available.\n\ |
|
3372
|
595 @end deftypefn") |
|
529
|
596 { |
|
4233
|
597 octave_value retval; |
|
529
|
598 |
|
5775
|
599 // FIXME -- add timeout and default value args? |
|
529
|
600 |
|
3676
|
601 if (interactive || forced_interactive) |
|
529
|
602 { |
|
4067
|
603 int c = octave_kbhit (args.length () == 0); |
|
3657
|
604 |
|
3658
|
605 if (c == -1) |
|
|
606 c = 0; |
|
3657
|
607 |
|
529
|
608 char *s = new char [2]; |
|
|
609 s[0] = c; |
|
|
610 s[1] = '\0'; |
|
|
611 retval = s; |
|
|
612 } |
|
|
613 |
|
|
614 return retval; |
|
|
615 } |
|
|
616 |
|
1957
|
617 DEFUN (pause, args, , |
|
3301
|
618 "-*- texinfo -*-\n\ |
|
|
619 @deftypefn {Built-in Function} {} pause (@var{seconds})\n\ |
|
|
620 Suspend the execution of the program. If invoked without any arguments,\n\ |
|
|
621 Octave waits until you type a character. With a numeric argument, it\n\ |
|
|
622 pauses for the given number of seconds. For example, the following\n\ |
|
|
623 statement prints a message and then waits 5 seconds before clearing the\n\ |
|
|
624 screen.\n\ |
|
|
625 \n\ |
|
|
626 @example\n\ |
|
|
627 @group\n\ |
|
|
628 fprintf (stderr, \"wait please...\n\");\n\ |
|
|
629 pause (5);\n\ |
|
|
630 clc;\n\ |
|
|
631 @end group\n\ |
|
|
632 @end example\n\ |
|
|
633 @end deftypefn") |
|
529
|
634 { |
|
2086
|
635 octave_value_list retval; |
|
529
|
636 |
|
|
637 int nargin = args.length (); |
|
|
638 |
|
712
|
639 if (! (nargin == 0 || nargin == 1)) |
|
529
|
640 { |
|
5823
|
641 print_usage (); |
|
529
|
642 return retval; |
|
|
643 } |
|
|
644 |
|
1579
|
645 if (nargin == 1) |
|
529
|
646 { |
|
1579
|
647 double dval = args(0).double_value (); |
|
636
|
648 |
|
1579
|
649 if (! error_state) |
|
|
650 { |
|
|
651 if (xisnan (dval)) |
|
|
652 warning ("pause: NaN is an invalid delay"); |
|
2630
|
653 else if (xisinf (dval)) |
|
3234
|
654 { |
|
|
655 flush_octave_stdout (); |
|
4067
|
656 octave_kbhit (); |
|
3234
|
657 } |
|
1579
|
658 else |
|
4086
|
659 octave_sleep (dval); |
|
529
|
660 } |
|
|
661 } |
|
1579
|
662 else |
|
3234
|
663 { |
|
|
664 flush_octave_stdout (); |
|
4067
|
665 octave_kbhit (); |
|
3234
|
666 } |
|
2630
|
667 |
|
|
668 return retval; |
|
|
669 } |
|
|
670 |
|
|
671 DEFUN (sleep, args, , |
|
3301
|
672 "-*- texinfo -*-\n\ |
|
|
673 @deftypefn {Built-in Function} {} sleep (@var{seconds})\n\ |
|
|
674 Suspend the execution of the program for the given number of seconds.\n\ |
|
|
675 @end deftypefn") |
|
2630
|
676 { |
|
|
677 octave_value_list retval; |
|
|
678 |
|
|
679 if (args.length () == 1) |
|
1579
|
680 { |
|
2630
|
681 double dval = args(0).double_value (); |
|
|
682 |
|
|
683 if (! error_state) |
|
|
684 { |
|
|
685 if (xisnan (dval)) |
|
|
686 warning ("sleep: NaN is an invalid delay"); |
|
|
687 else |
|
4086
|
688 octave_sleep (dval); |
|
2630
|
689 } |
|
1579
|
690 } |
|
2630
|
691 else |
|
5823
|
692 print_usage (); |
|
2630
|
693 |
|
|
694 return retval; |
|
|
695 } |
|
|
696 |
|
|
697 DEFUN (usleep, args, , |
|
3301
|
698 "-*- texinfo -*-\n\ |
|
|
699 @deftypefn {Built-in Function} {} usleep (@var{microseconds})\n\ |
|
|
700 Suspend the execution of the program for the given number of\n\ |
|
|
701 microseconds. On systems where it is not possible to sleep for periods\n\ |
|
|
702 of time less than one second, @code{usleep} will pause the execution for\n\ |
|
|
703 @code{round (@var{microseconds} / 1e6)} seconds.\n\ |
|
|
704 @end deftypefn") |
|
2630
|
705 { |
|
|
706 octave_value_list retval; |
|
|
707 |
|
|
708 if (args.length () == 1) |
|
|
709 { |
|
|
710 double dval = args(0).double_value (); |
|
|
711 |
|
|
712 if (! error_state) |
|
|
713 { |
|
|
714 if (xisnan (dval)) |
|
|
715 warning ("usleep: NaN is an invalid delay"); |
|
|
716 else |
|
|
717 { |
|
|
718 int delay = NINT (dval); |
|
2631
|
719 |
|
2630
|
720 if (delay > 0) |
|
3308
|
721 octave_usleep (delay); |
|
2630
|
722 } |
|
|
723 } |
|
|
724 } |
|
|
725 else |
|
5823
|
726 print_usage (); |
|
529
|
727 |
|
|
728 return retval; |
|
|
729 } |
|
|
730 |
|
5775
|
731 // FIXME -- maybe this should only return 1 if IEEE floating |
|
862
|
732 // point functions really work. |
|
|
733 |
|
1957
|
734 DEFUN (isieee, , , |
|
3301
|
735 "-*- texinfo -*-\n\ |
|
|
736 @deftypefn {Built-in Function} {} isieee ()\n\ |
|
|
737 Return 1 if your computer claims to conform to the IEEE standard for\n\ |
|
|
738 floating point calculations.\n\ |
|
|
739 @end deftypefn") |
|
862
|
740 { |
|
4600
|
741 oct_mach_info::float_format flt_fmt = oct_mach_info::native_float_format (); |
|
2317
|
742 |
|
4574
|
743 return octave_value (flt_fmt == oct_mach_info::flt_fmt_ieee_little_endian |
|
|
744 || flt_fmt == oct_mach_info::flt_fmt_ieee_big_endian); |
|
862
|
745 } |
|
|
746 |
|
4600
|
747 DEFUN (native_float_format, , , |
|
|
748 "-*- texinfo -*-\n\ |
|
|
749 @deftypefn {Built-in Function} {} native_float_format ()\n\ |
|
|
750 Return the native floating point format as a string\n\ |
|
|
751 @end deftypefn") |
|
|
752 { |
|
|
753 oct_mach_info::float_format flt_fmt = oct_mach_info::native_float_format (); |
|
|
754 |
|
|
755 return octave_value (oct_mach_info::float_format_as_string (flt_fmt)); |
|
|
756 } |
|
|
757 |
|
1957
|
758 DEFUN (tilde_expand, args, , |
|
3301
|
759 "-*- texinfo -*-\n\ |
|
|
760 @deftypefn {Built-in Function} {} tilde_expand (@var{string})\n\ |
|
|
761 Performs tilde expansion on @var{string}. If @var{string} begins with a\n\ |
|
|
762 tilde character, (@samp{~}), all of the characters preceding the first\n\ |
|
|
763 slash (or all characters, if there is no slash) are treated as a\n\ |
|
|
764 possible user name, and the tilde and the following characters up to the\n\ |
|
|
765 slash are replaced by the home directory of the named user. If the\n\ |
|
|
766 tilde is followed immediately by a slash, the tilde is replaced by the\n\ |
|
|
767 home directory of the user running Octave. For example,\n\ |
|
|
768 \n\ |
|
|
769 @example\n\ |
|
|
770 @group\n\ |
|
|
771 tilde_expand (\"~joeuser/bin\")\n\ |
|
|
772 @result{} \"/home/joeuser/bin\"\n\ |
|
|
773 tilde_expand (\"~/bin\")\n\ |
|
|
774 @result{} \"/home/jwe/bin\"\n\ |
|
|
775 @end group\n\ |
|
|
776 @end example\n\ |
|
|
777 @end deftypefn") |
|
1750
|
778 { |
|
4233
|
779 octave_value retval; |
|
1750
|
780 |
|
|
781 int nargin = args.length (); |
|
|
782 |
|
|
783 if (nargin == 1) |
|
6116
|
784 { |
|
|
785 octave_value arg = args(0); |
|
|
786 |
|
|
787 string_vector sv = arg.all_strings (); |
|
|
788 |
|
|
789 if (! error_state) |
|
|
790 { |
|
|
791 sv = file_ops::tilde_expand (sv); |
|
|
792 |
|
|
793 if (arg.is_cellstr ()) |
|
|
794 retval = Cell (arg.dims (), sv); |
|
|
795 else |
|
|
796 retval = sv; |
|
|
797 } |
|
|
798 else |
|
|
799 error ("tilde_expand: expecting argument to be char or cellstr object"); |
|
|
800 } |
|
1750
|
801 else |
|
5823
|
802 print_usage (); |
|
1750
|
803 |
|
|
804 return retval; |
|
|
805 } |
|
|
806 |
|
2552
|
807 #if defined (__EMX__) && defined (OS2) |
|
|
808 |
|
4208
|
809 DEFCMD (extproc, , , |
|
2926
|
810 "extproc: ignored by Octave") |
|
2552
|
811 { |
|
|
812 return octave_value_list (); |
|
|
813 } |
|
|
814 |
|
|
815 DEFALIAS (EXTPROC, extproc); |
|
|
816 |
|
|
817 #endif |
|
|
818 |
|
529
|
819 /* |
|
1
|
820 ;;; Local Variables: *** |
|
|
821 ;;; mode: C++ *** |
|
|
822 ;;; End: *** |
|
|
823 */ |
