Mercurial > octave-nkf
annotate src/sysdep.cc @ 7961:a5d1e27ee1f4 ss-3-1-51
3.1.51 snapshot
| author | John W. Eaton <jwe@octave.org> |
|---|---|
| date | Tue, 22 Jul 2008 11:40:48 -0400 |
| parents | 84a7f00586aa |
| children | 0ef13e15319b |
| rev | line source |
|---|---|
| 1 | 1 /* |
| 2 | |
| 7017 | 3 Copyright (C) 1993, 1994, 1995, 1996, 1997, 1999, 2000, 2002, 2003, |
| 4 2005, 2006, 2007 John W. Eaton | |
| 1 | 5 |
| 6 This file is part of Octave. | |
| 7 | |
| 8 Octave is free software; you can redistribute it and/or modify it | |
| 9 under the terms of the GNU General Public License as published by the | |
| 7016 | 10 Free Software Foundation; either version 3 of the License, or (at your |
| 11 option) any later version. | |
| 1 | 12 |
| 13 Octave is distributed in the hope that it will be useful, but WITHOUT | |
| 14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 16 for more details. | |
| 17 | |
| 18 You should have received a copy of the GNU General Public License | |
| 7016 | 19 along with Octave; see the file COPYING. If not, see |
| 20 <http://www.gnu.org/licenses/>. | |
| 1 | 21 |
| 22 */ | |
| 23 | |
| 240 | 24 #ifdef HAVE_CONFIG_H |
| 1192 | 25 #include <config.h> |
| 1 | 26 #endif |
| 27 | |
| 1346 | 28 #include <cfloat> |
| 1343 | 29 #include <cstddef> |
| 1346 | 30 #include <cstdio> |
| 1343 | 31 #include <cstdlib> |
| 32 #include <cstring> | |
| 33 | |
| 3503 | 34 #include <iostream> |
| 1728 | 35 #include <string> |
| 36 | |
| 1350 | 37 #ifdef HAVE_UNISTD_H |
| 2442 | 38 #ifdef HAVE_SYS_TYPES_H |
| 529 | 39 #include <sys/types.h> |
| 2442 | 40 #endif |
| 529 | 41 #include <unistd.h> |
| 42 #endif | |
| 1 | 43 |
| 1430 | 44 #if defined (HAVE_TERMIOS_H) |
| 45 #include <termios.h> | |
| 46 #elif defined (HAVE_TERMIO_H) | |
| 47 #include <termio.h> | |
| 48 #elif defined (HAVE_SGTTY_H) | |
| 49 #include <sgtty.h> | |
| 4067 | 50 #endif |
| 51 | |
| 52 #if defined (HAVE_CONIO_H) | |
| 53 #include <conio.h> | |
| 1430 | 54 #endif |
| 55 | |
| 3248 | 56 #if defined (HAVE_SYS_IOCTL_H) |
| 57 #include <sys/ioctl.h> | |
| 58 #endif | |
| 59 | |
| 1463 | 60 #if defined (HAVE_FLOATINGPOINT_H) |
| 61 #include <floatingpoint.h> | |
| 62 #endif | |
| 63 | |
| 2508 | 64 #if defined (HAVE_IEEEFP_H) |
| 65 #include <ieeefp.h> | |
| 66 #endif | |
| 67 | |
| 1463 | 68 #if !defined (HAVE_GETHOSTNAME) && defined (HAVE_SYS_UTSNAME_H) |
| 69 #include <sys/utsname.h> | |
| 70 #endif | |
| 71 | |
| 2926 | 72 #include "cmd-edit.h" |
| 73 #include "file-ops.h" | |
| 2893 | 74 #include "lo-mappers.h" |
| 7231 | 75 #include "lo-math.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" |
| 6419 | 87 #include "parse.h" |
| 5770 | 88 #include "sighandlers.h" |
| 1352 | 89 #include "sysdep.h" |
| 1755 | 90 #include "toplev.h" |
| 529 | 91 #include "utils.h" |
| 6598 | 92 #include "file-stat.h" |
| 529 | 93 |
| 94 #ifndef STDIN_FILENO | |
| 95 #define STDIN_FILENO 1 | |
| 96 #endif | |
| 444 | 97 |
| 2508 | 98 #if defined (__386BSD__) || defined (__FreeBSD__) |
| 99 static void | |
| 100 BSD_init (void) | |
| 101 { | |
| 102 #if defined (HAVE_FLOATINGPOINT_H) | |
| 103 // Disable trapping on common exceptions. | |
| 4164 | 104 #ifndef FP_X_DNML |
| 105 #define FP_X_DNML 0 | |
| 106 #endif | |
| 2508 | 107 fpsetmask (~(FP_X_OFL|FP_X_INV|FP_X_DZ|FP_X_DNML|FP_X_UFL|FP_X_IMP)); |
| 108 #endif | |
| 109 } | |
| 110 #endif | |
| 111 | |
| 6956 | 112 #if defined (__WIN32__) && ! defined (_POSIX_VERSION) |
| 6080 | 113 static void |
| 114 w32_set_octave_home (void) | |
| 115 { | |
| 116 int n = 1024; | |
| 117 | |
| 6086 | 118 std::string bin_dir (n, '\0'); |
| 6080 | 119 |
| 120 while (true) | |
| 121 { | |
| 6954 | 122 HMODULE hMod = GetModuleHandle ("octinterp"); |
| 123 int status = GetModuleFileName (hMod, &bin_dir[0], n); | |
| 6080 | 124 |
| 125 if (status < n) | |
| 126 { | |
| 127 bin_dir.resize (status); | |
| 128 break; | |
| 129 } | |
| 130 else | |
| 131 { | |
| 132 n *= 2; | |
| 133 bin_dir.resize (n); | |
| 134 } | |
| 135 } | |
| 136 | |
| 137 if (! bin_dir.empty ()) | |
| 138 { | |
| 139 size_t pos = bin_dir.rfind ("\\bin\\"); | |
| 140 | |
| 141 if (pos != NPOS) | |
| 142 octave_env::putenv ("OCTAVE_HOME", bin_dir.substr (0, pos)); | |
| 143 } | |
| 144 } | |
| 145 | |
| 6960 | 146 void |
| 5451 | 147 w32_set_quiet_shutdown (void) |
| 148 { | |
| 149 // Let the user close the console window or shutdown without the | |
| 150 // pesky dialog. | |
| 151 // | |
| 5775 | 152 // FIXME -- should this be user configurable? |
| 5451 | 153 SetProcessShutdownParameters (0x280, SHUTDOWN_NORETRY); |
| 154 } | |
| 155 | |
| 6960 | 156 void |
| 5451 | 157 MINGW_signal_cleanup (void) |
| 158 { | |
| 5455 | 159 w32_set_quiet_shutdown (); |
| 5451 | 160 |
| 5455 | 161 w32_raise_final (); |
| 5451 | 162 } |
| 163 #endif | |
| 164 | |
| 165 #if defined (__MINGW32__) | |
| 166 static void | |
| 167 MINGW_init (void) | |
| 168 { | |
| 6080 | 169 w32_set_octave_home (); |
| 170 | |
| 5451 | 171 // Init mutex to protect setjmp/longjmp and get main thread context |
| 172 w32_sigint_init (); | |
| 173 | |
| 174 w32_set_quiet_shutdown (); | |
| 175 } | |
| 176 #endif | |
| 177 | |
| 6080 | 178 #if defined (_MSC_VER) |
| 179 static void | |
| 180 MSVC_init (void) | |
| 181 { | |
| 182 w32_set_octave_home (); | |
| 6135 | 183 |
| 184 // Init mutex to protect setjmp/longjmp and get main thread context | |
| 185 w32_sigint_init (); | |
| 186 | |
| 187 w32_set_quiet_shutdown (); | |
| 6080 | 188 } |
| 189 #endif | |
| 190 | |
| 4091 | 191 #if defined (__CYGWIN__) |
| 192 | |
| 193 #include <limits.h> | |
| 194 #include <sys/cygwin.h> | |
| 195 | |
| 196 static void | |
| 197 CYGWIN_init (void) | |
| 198 { | |
| 4470 | 199 // Make sure TMPDIR contains an absolute windows path. Use '/' |
| 200 // rather than '\\' so that sh expansion won't mess file names. | |
| 201 | |
| 4091 | 202 std::string tmpdir = octave_env::getenv ("TMPDIR"); |
| 203 | |
| 204 if (tmpdir.empty ()) | |
| 4470 | 205 tmpdir = "/tmp"; |
| 206 | |
| 207 char buf [PATH_MAX]; | |
| 4091 | 208 |
| 4470 | 209 if (cygwin32_conv_to_full_win32_path (tmpdir.c_str (), buf) < 0) |
| 210 panic ("CYGWIN_init: unable to convert TMPDIR (= \"%s\") to Windows directory name", | |
| 211 tmpdir.c_str ()); | |
| 212 else | |
| 213 { | |
| 214 tmpdir = buf; | |
| 4091 | 215 |
| 4470 | 216 for (size_t i = 0; i < tmpdir.length (); i++) |
| 217 if (tmpdir[i] == '\\') | |
| 218 tmpdir[i] = '/'; | |
| 4091 | 219 } |
| 4470 | 220 |
| 221 octave_env::putenv ("TMPDIR", tmpdir); | |
| 4091 | 222 } |
| 223 #endif | |
| 224 | |
| 6598 | 225 // Return TRUE if FILE1 and FILE2 refer to the same (physical) file. |
| 226 | |
| 227 bool | |
| 228 same_file_internal (const std::string& file1, const std::string& file2) | |
| 229 { | |
| 230 #ifdef OCTAVE_USE_WINDOWS_API | |
| 231 | |
| 6691 | 232 bool retval = false; |
| 233 | |
| 6598 | 234 // Windows native code |
| 235 // Reference: http://msdn2.microsoft.com/en-us/library/aa363788.aspx | |
| 236 | |
| 6691 | 237 HANDLE hfile1 = CreateFile (file1.c_str (), 0, FILE_SHARE_READ, 0, |
| 238 OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0); | |
| 239 | |
| 240 if (hfile1 != INVALID_HANDLE_VALUE) | |
| 241 { | |
| 242 HANDLE hfile2 = CreateFile (file2.c_str (), 0, FILE_SHARE_READ, 0, | |
| 243 OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0); | |
| 6598 | 244 |
| 6691 | 245 if (hfile2 != INVALID_HANDLE_VALUE) |
| 246 { | |
| 247 BY_HANDLE_FILE_INFORMATION hfi1; | |
| 248 BY_HANDLE_FILE_INFORMATION hfi2; | |
| 249 | |
| 250 if (GetFileInformationByHandle (hfile1, &hfi1) | |
| 251 && GetFileInformationByHandle (hfile2, &hfi2)) | |
| 6598 | 252 |
| 6691 | 253 retval = (hfi1.dwVolumeSerialNumber == hfi2.dwVolumeSerialNumber |
| 254 && hfi1.nFileIndexHigh == hfi2.nFileIndexHigh | |
| 255 && hfi1.nFileIndexLow == hfi2.nFileIndexLow); | |
| 6598 | 256 |
| 6691 | 257 CloseHandle (hfile2); |
| 258 } | |
| 259 | |
| 6598 | 260 CloseHandle (hfile1); |
| 261 } | |
| 6691 | 262 |
| 263 return retval; | |
| 6598 | 264 |
| 265 #else | |
| 266 | |
| 267 // POSIX Code | |
| 268 | |
| 269 file_stat fs_file1 (file1); | |
| 270 file_stat fs_file2 (file2); | |
| 271 | |
| 272 return (fs_file1 && fs_file2 | |
| 273 && fs_file1.ino () == fs_file2.ino () | |
| 274 && fs_file1.dev () == fs_file2.dev ()); | |
| 275 | |
| 276 #endif | |
| 277 } | |
| 278 | |
| 4284 | 279 #if defined (__DECCXX) |
| 280 | |
| 281 // These don't seem to be instantiated automatically... | |
| 282 | |
| 283 template std::istream& | |
| 284 std::operator >> (std::istream&, std::complex<double>&); | |
| 285 | |
| 286 template std::string& | |
| 287 std::string::append (const std::string&, size_t, size_t); | |
| 288 | |
| 289 #endif | |
| 290 | |
| 2610 | 291 #if defined (NeXT) |
| 1 | 292 extern "C" |
| 293 { | |
| 294 typedef void (*_cplus_fcn_int) (int); | |
| 295 extern void (*malloc_error (_cplus_fcn_int)) (int); | |
| 296 } | |
| 297 | |
| 298 static void | |
| 299 malloc_handler (int code) | |
| 300 { | |
| 301 if (code == 5) | |
| 217 | 302 warning ("hopefully recoverable malloc error: freeing wild pointer"); |
| 1 | 303 else |
| 2926 | 304 panic ("probably irrecoverable malloc error: code %d", code); |
| 1 | 305 } |
| 306 | |
| 307 static void | |
| 308 NeXT_init (void) | |
| 309 { | |
| 310 malloc_error (malloc_handler); | |
| 311 } | |
| 3333 | 312 #endif |
| 1 | 313 |
| 2546 | 314 #if defined (__EMX__) |
| 315 OS2_init (void) | |
| 316 { | |
| 317 _control87 ((EM_INVALID | EM_DENORMAL | EM_ZERODIVIDE | EM_OVERFLOW | |
| 318 | EM_UNDERFLOW | EM_INEXACT), MCW_EM); | |
| 319 } | |
| 320 #endif | |
| 321 | |
| 2508 | 322 #if defined (SCO) |
| 323 static void | |
| 324 SCO_init (void) | |
| 325 { | |
| 326 #if defined (HAVE_IEEEFP_H) | |
| 327 // Disable trapping on common exceptions. | |
| 328 fpsetmask (~(FP_X_OFL|FP_X_INV|FP_X_DZ|FP_X_DNML|FP_X_UFL|FP_X_IMP)); | |
| 329 #endif | |
| 330 } | |
| 331 #endif | |
| 332 | |
| 1 | 333 void |
| 334 sysdep_init (void) | |
| 335 { | |
| 959 | 336 #if defined (__386BSD__) || defined (__FreeBSD__) |
| 2508 | 337 BSD_init (); |
| 4091 | 338 #elif defined (__CYGWIN__) |
| 339 CYGWIN_init (); | |
| 5451 | 340 #elif defined (__MINGW32__) |
| 341 MINGW_init (); | |
| 6080 | 342 #elif defined (_MSC_VER) |
| 343 MSVC_init (); | |
| 2610 | 344 #elif defined (NeXT) |
| 1 | 345 NeXT_init (); |
| 2610 | 346 #elif defined (__EMX__) |
| 2546 | 347 OS2_init (); |
| 2508 | 348 #elif defined (SCO) |
| 349 SCO_init (); | |
| 1 | 350 #endif |
| 444 | 351 |
| 352 octave_ieee_init (); | |
| 1 | 353 } |
| 354 | |
| 5451 | 355 void |
| 356 sysdep_cleanup (void) | |
| 357 { | |
| 358 MINGW_SIGNAL_CLEANUP (); | |
| 359 } | |
| 360 | |
| 767 | 361 // Set terminal in raw mode. From less-177. |
| 362 // | |
| 363 // Change terminal to "raw mode", or restore to "normal" mode. | |
| 364 // "Raw mode" means | |
| 365 // 1. An outstanding read will complete on receipt of a single keystroke. | |
| 366 // 2. Input is not echoed. | |
| 367 // 3. On output, \n is mapped to \r\n. | |
| 368 // 4. \t is NOT expanded into spaces. | |
| 369 // 5. Signal-causing characters such as ctrl-C (interrupt), | |
| 370 // etc. are NOT disabled. | |
| 371 // It doesn't matter whether an input \n is mapped to \r, or vice versa. | |
| 372 | |
| 529 | 373 void |
| 3657 | 374 raw_mode (bool on, bool wait) |
| 529 | 375 { |
| 3657 | 376 static bool curr_on = false; |
| 529 | 377 |
| 378 int tty_fd = STDIN_FILENO; | |
| 379 if (! isatty (tty_fd)) | |
| 380 { | |
| 381 if (interactive) | |
| 382 error ("stdin is not a tty!"); | |
| 383 return; | |
| 384 } | |
| 385 | |
| 386 if (on == curr_on) | |
| 387 return; | |
| 388 | |
| 389 #if defined (HAVE_TERMIOS_H) | |
| 390 { | |
| 391 struct termios s; | |
| 392 static struct termios save_term; | |
| 393 | |
| 394 if (on) | |
| 395 { | |
| 1358 | 396 // Get terminal modes. |
| 529 | 397 |
| 398 tcgetattr (tty_fd, &s); | |
| 399 | |
| 1358 | 400 // Save modes and set certain variables dependent on modes. |
| 529 | 401 |
| 402 save_term = s; | |
| 403 // ospeed = s.c_cflag & CBAUD; | |
| 404 // erase_char = s.c_cc[VERASE]; | |
| 405 // kill_char = s.c_cc[VKILL]; | |
| 406 | |
| 1358 | 407 // Set the modes to the way we want them. |
| 529 | 408 |
| 409 s.c_lflag &= ~(ICANON|ECHO|ECHOE|ECHOK|ECHONL); | |
| 410 s.c_oflag |= (OPOST|ONLCR); | |
| 411 #if defined (OCRNL) | |
| 412 s.c_oflag &= ~(OCRNL); | |
| 413 #endif | |
| 414 #if defined (ONOCR) | |
| 415 s.c_oflag &= ~(ONOCR); | |
| 416 #endif | |
| 417 #if defined (ONLRET) | |
| 418 s.c_oflag &= ~(ONLRET); | |
| 419 #endif | |
| 3658 | 420 s.c_cc[VMIN] = wait ? 1 : 0; |
| 529 | 421 s.c_cc[VTIME] = 0; |
| 422 } | |
| 423 else | |
| 424 { | |
| 1358 | 425 // Restore saved modes. |
| 426 | |
| 529 | 427 s = save_term; |
| 428 } | |
| 3658 | 429 |
| 529 | 430 tcsetattr (tty_fd, TCSAFLUSH, &s); |
| 431 } | |
| 432 #elif defined (HAVE_TERMIO_H) | |
| 433 { | |
| 434 struct termio s; | |
| 435 static struct termio save_term; | |
| 436 | |
| 437 if (on) | |
| 438 { | |
| 1358 | 439 // Get terminal modes. |
| 529 | 440 |
| 441 ioctl (tty_fd, TCGETA, &s); | |
| 442 | |
| 1358 | 443 // Save modes and set certain variables dependent on modes. |
| 529 | 444 |
| 445 save_term = s; | |
| 446 // ospeed = s.c_cflag & CBAUD; | |
| 447 // erase_char = s.c_cc[VERASE]; | |
| 448 // kill_char = s.c_cc[VKILL]; | |
| 449 | |
| 1358 | 450 // Set the modes to the way we want them. |
| 529 | 451 |
| 452 s.c_lflag &= ~(ICANON|ECHO|ECHOE|ECHOK|ECHONL); | |
| 453 s.c_oflag |= (OPOST|ONLCR); | |
| 454 #if defined (OCRNL) | |
| 455 s.c_oflag &= ~(OCRNL); | |
| 456 #endif | |
| 457 #if defined (ONOCR) | |
| 458 s.c_oflag &= ~(ONOCR); | |
| 459 #endif | |
| 460 #if defined (ONLRET) | |
| 461 s.c_oflag &= ~(ONLRET); | |
| 462 #endif | |
| 3658 | 463 s.c_cc[VMIN] = wait ? 1 : 0; |
| 529 | 464 } |
| 465 else | |
| 466 { | |
| 1358 | 467 // Restore saved modes. |
| 468 | |
| 529 | 469 s = save_term; |
| 470 } | |
| 3658 | 471 |
| 529 | 472 ioctl (tty_fd, TCSETAW, &s); |
| 473 } | |
| 474 #elif defined (HAVE_SGTTY_H) | |
| 475 { | |
| 476 struct sgttyb s; | |
| 477 static struct sgttyb save_term; | |
| 478 | |
| 479 if (on) | |
| 480 { | |
| 1358 | 481 // Get terminal modes. |
| 529 | 482 |
| 483 ioctl (tty_fd, TIOCGETP, &s); | |
| 484 | |
| 1358 | 485 // Save modes and set certain variables dependent on modes. |
| 529 | 486 |
| 487 save_term = s; | |
| 488 // ospeed = s.sg_ospeed; | |
| 489 // erase_char = s.sg_erase; | |
| 490 // kill_char = s.sg_kill; | |
| 491 | |
| 1358 | 492 // Set the modes to the way we want them. |
| 529 | 493 |
| 494 s.sg_flags |= CBREAK; | |
| 495 s.sg_flags &= ~(ECHO); | |
| 496 } | |
| 497 else | |
| 498 { | |
| 1358 | 499 // Restore saved modes. |
| 500 | |
| 529 | 501 s = save_term; |
| 502 } | |
| 3658 | 503 |
| 529 | 504 ioctl (tty_fd, TIOCSETN, &s); |
| 505 } | |
| 506 #else | |
| 4064 | 507 warning ("no support for raw mode console I/O on this system"); |
| 508 | |
| 509 // Make sure the current mode doesn't toggle. | |
| 510 on = curr_on; | |
| 529 | 511 #endif |
| 512 | |
| 513 curr_on = on; | |
| 514 } | |
| 515 | |
| 6726 | 516 FILE * |
| 517 octave_popen (const char *command, const char *mode) | |
| 518 { | |
| 519 #if defined (__MINGW32__) || defined (_MSC_VER) | |
| 520 if (mode && mode[0] && ! mode[1]) | |
| 521 { | |
| 522 char tmode[3]; | |
| 523 tmode[0] = mode[0]; | |
| 524 tmode[1] = 'b'; | |
| 525 tmode[2] = 0; | |
| 526 | |
| 527 return _popen (command, tmode); | |
| 528 } | |
| 529 else | |
| 530 return _popen (command, mode); | |
| 531 #else | |
| 532 return popen (command, mode); | |
| 533 #endif | |
| 534 } | |
| 535 | |
| 536 int | |
| 537 octave_pclose (FILE *f) | |
| 538 { | |
| 539 #if defined (__MINGW32__) || defined (_MSC_VER) | |
| 540 return _pclose (f); | |
| 541 #else | |
| 542 return pclose (f); | |
| 543 #endif | |
| 544 } | |
| 545 | |
| 767 | 546 // Read one character from the terminal. |
| 547 | |
| 529 | 548 int |
| 4067 | 549 octave_kbhit (bool wait) |
| 529 | 550 { |
| 4067 | 551 #ifdef HAVE__KBHIT |
| 4081 | 552 int c = (! wait && ! _kbhit ()) ? 0 : std::cin.get (); |
| 4067 | 553 #else |
| 3658 | 554 raw_mode (true, wait); |
| 555 | |
| 5770 | 556 // Get current handler. |
| 557 octave_interrupt_handler saved_interrupt_handler | |
| 558 = octave_ignore_interrupts (); | |
| 559 | |
| 560 // Restore it, disabling system call restarts (if possible) so the | |
| 561 // read can be interrupted. | |
| 562 | |
| 563 octave_set_interrupt_handler (saved_interrupt_handler, false); | |
| 564 | |
| 3658 | 565 int c = std::cin.get (); |
| 5770 | 566 |
| 3658 | 567 if (std::cin.fail () || std::cin.eof ()) |
| 568 std::cin.clear (); | |
| 569 | |
| 5770 | 570 // Restore it, enabling system call restarts (if possible). |
| 571 octave_set_interrupt_handler (saved_interrupt_handler, true); | |
| 572 | |
| 3658 | 573 raw_mode (false, true); |
| 4067 | 574 #endif |
| 3658 | 575 |
| 529 | 576 return c; |
| 577 } | |
| 578 | |
| 1957 | 579 DEFUN (clc, , , |
| 3332 | 580 "-*- texinfo -*-\n\ |
| 581 @deftypefn {Built-in Function} {} clc ()\n\ | |
| 582 @deftypefnx {Built-in Function} {} home ()\n\ | |
| 583 Clear the terminal screen and move the cursor to the upper left corner.\n\ | |
| 3333 | 584 @end deftypefn") |
| 529 | 585 { |
| 2926 | 586 command_editor::clear_screen (); |
| 529 | 587 |
| 2926 | 588 return octave_value_list (); |
| 529 | 589 } |
| 590 | |
| 549 | 591 DEFALIAS (home, clc); |
| 592 | |
| 1957 | 593 DEFUN (getenv, args, , |
| 3301 | 594 "-*- texinfo -*-\n\ |
| 595 @deftypefn {Built-in Function} {} getenv (@var{var})\n\ | |
| 596 Return the value of the environment variable @var{var}. For example,\n\ | |
| 597 \n\ | |
| 598 @example\n\ | |
| 599 getenv (\"PATH\")\n\ | |
| 600 @end example\n\ | |
| 601 \n\ | |
| 602 @noindent\n\ | |
| 603 returns a string containing the value of your path.\n\ | |
| 604 @end deftypefn") | |
| 529 | 605 { |
| 4233 | 606 octave_value retval; |
| 529 | 607 |
| 608 int nargin = args.length (); | |
| 609 | |
| 712 | 610 if (nargin == 1) |
| 529 | 611 { |
| 3523 | 612 std::string name = args(0).string_value (); |
| 636 | 613 |
| 614 if (! error_state) | |
| 2926 | 615 retval = octave_env::getenv (name); |
| 529 | 616 } |
| 617 else | |
| 5823 | 618 print_usage (); |
| 529 | 619 |
| 620 return retval; | |
| 621 } | |
| 622 | |
| 1957 | 623 DEFUN (putenv, args, , |
| 3301 | 624 "-*- texinfo -*-\n\ |
| 625 @deftypefn {Built-in Function} {} putenv (@var{var}, @var{value})\n\ | |
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626 @deftypefnx {Built-in Function} {} setenv (@var{var}, @var{value})\n\ |
| 3301 | 627 Set the value of the environment variable @var{var} to @var{value}.\n\ |
| 628 @end deftypefn") | |
| 1706 | 629 { |
| 2086 | 630 octave_value_list retval; |
| 1706 | 631 |
| 632 int nargin = args.length (); | |
| 633 | |
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634 if (nargin == 2 || nargin == 1) |
| 1706 | 635 { |
| 3523 | 636 std::string var = args(0).string_value (); |
| 1706 | 637 |
| 638 if (! error_state) | |
| 639 { | |
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640 std::string val = (nargin == 2 |
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641 ? args(1).string_value () : std::string ()); |
| 1706 | 642 |
| 643 if (! error_state) | |
| 2926 | 644 octave_env::putenv (var, val); |
| 1706 | 645 else |
| 646 error ("putenv: second argument should be a string"); | |
| 647 } | |
| 648 else | |
| 649 error ("putenv: first argument should be a string"); | |
| 650 } | |
| 651 else | |
| 5823 | 652 print_usage (); |
| 1706 | 653 |
| 654 return retval; | |
| 655 } | |
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656 DEFALIAS (setenv, putenv); |
| 1706 | 657 |
| 5775 | 658 // FIXME -- perhaps kbhit should also be able to print a prompt? |
| 3372 | 659 |
| 3657 | 660 DEFUN (kbhit, args, , |
| 3372 | 661 "-*- texinfo -*-\n\ |
| 662 @deftypefn {Built-in Function} {} kbhit ()\n\ | |
| 3657 | 663 Read a single keystroke from the keyboard. If called with one\n\ |
| 664 argument, don't wait for a keypress. For example,\n\ | |
| 3372 | 665 \n\ |
| 666 @example\n\ | |
| 667 x = kbhit ();\n\ | |
| 668 @end example\n\ | |
| 669 \n\ | |
| 670 @noindent\n\ | |
| 671 will set @var{x} to the next character typed at the keyboard as soon as\n\ | |
| 672 it is typed.\n\ | |
| 3657 | 673 \n\ |
| 674 @example\n\ | |
| 675 x = kbhit (1);\n\ | |
| 676 @end example\n\ | |
| 677 \n\ | |
| 678 @noindent\n\ | |
| 679 identical to the above example, but don't wait for a keypress,\n\ | |
| 680 returning the empty string if no key is available.\n\ | |
| 3372 | 681 @end deftypefn") |
| 529 | 682 { |
| 4233 | 683 octave_value retval; |
| 529 | 684 |
| 5775 | 685 // FIXME -- add timeout and default value args? |
| 529 | 686 |
| 3676 | 687 if (interactive || forced_interactive) |
| 529 | 688 { |
| 6423 | 689 feval ("drawnow"); |
| 690 | |
| 4067 | 691 int c = octave_kbhit (args.length () == 0); |
| 3657 | 692 |
| 3658 | 693 if (c == -1) |
| 694 c = 0; | |
| 3657 | 695 |
| 529 | 696 char *s = new char [2]; |
| 697 s[0] = c; | |
| 698 s[1] = '\0'; | |
| 699 retval = s; | |
| 700 } | |
| 701 | |
| 702 return retval; | |
| 703 } | |
| 704 | |
| 1957 | 705 DEFUN (pause, args, , |
| 3301 | 706 "-*- texinfo -*-\n\ |
| 707 @deftypefn {Built-in Function} {} pause (@var{seconds})\n\ | |
| 708 Suspend the execution of the program. If invoked without any arguments,\n\ | |
| 709 Octave waits until you type a character. With a numeric argument, it\n\ | |
| 710 pauses for the given number of seconds. For example, the following\n\ | |
| 711 statement prints a message and then waits 5 seconds before clearing the\n\ | |
| 712 screen.\n\ | |
| 713 \n\ | |
| 714 @example\n\ | |
| 715 @group\n\ | |
| 6848 | 716 fprintf (stderr, \"wait please...\\n\");\n\ |
| 3301 | 717 pause (5);\n\ |
| 718 clc;\n\ | |
| 719 @end group\n\ | |
| 720 @end example\n\ | |
| 721 @end deftypefn") | |
| 529 | 722 { |
| 2086 | 723 octave_value_list retval; |
| 529 | 724 |
| 725 int nargin = args.length (); | |
| 726 | |
| 712 | 727 if (! (nargin == 0 || nargin == 1)) |
| 529 | 728 { |
| 5823 | 729 print_usage (); |
| 529 | 730 return retval; |
| 731 } | |
| 732 | |
| 1579 | 733 if (nargin == 1) |
| 529 | 734 { |
| 1579 | 735 double dval = args(0).double_value (); |
| 636 | 736 |
| 1579 | 737 if (! error_state) |
| 738 { | |
| 6419 | 739 if (! xisnan (dval)) |
| 3234 | 740 { |
| 6419 | 741 feval ("drawnow"); |
| 742 | |
| 743 if (xisinf (dval)) | |
| 744 { | |
| 745 flush_octave_stdout (); | |
| 746 octave_kbhit (); | |
| 747 } | |
| 748 else | |
| 749 octave_sleep (dval); | |
| 3234 | 750 } |
| 1579 | 751 else |
| 6419 | 752 warning ("pause: NaN is an invalid delay"); |
| 529 | 753 } |
| 754 } | |
| 1579 | 755 else |
| 3234 | 756 { |
| 6423 | 757 feval ("drawnow"); |
| 3234 | 758 flush_octave_stdout (); |
| 4067 | 759 octave_kbhit (); |
| 3234 | 760 } |
| 2630 | 761 |
| 762 return retval; | |
| 763 } | |
| 764 | |
| 765 DEFUN (sleep, args, , | |
| 3301 | 766 "-*- texinfo -*-\n\ |
| 767 @deftypefn {Built-in Function} {} sleep (@var{seconds})\n\ | |
| 768 Suspend the execution of the program for the given number of seconds.\n\ | |
| 769 @end deftypefn") | |
| 2630 | 770 { |
| 771 octave_value_list retval; | |
| 772 | |
| 773 if (args.length () == 1) | |
| 1579 | 774 { |
| 2630 | 775 double dval = args(0).double_value (); |
| 776 | |
| 777 if (! error_state) | |
| 778 { | |
| 779 if (xisnan (dval)) | |
| 780 warning ("sleep: NaN is an invalid delay"); | |
| 781 else | |
| 6423 | 782 { |
| 783 feval ("drawnow"); | |
| 784 octave_sleep (dval); | |
| 785 } | |
| 2630 | 786 } |
| 1579 | 787 } |
| 2630 | 788 else |
| 5823 | 789 print_usage (); |
| 2630 | 790 |
| 791 return retval; | |
| 792 } | |
| 793 | |
| 794 DEFUN (usleep, args, , | |
| 3301 | 795 "-*- texinfo -*-\n\ |
| 796 @deftypefn {Built-in Function} {} usleep (@var{microseconds})\n\ | |
| 797 Suspend the execution of the program for the given number of\n\ | |
| 798 microseconds. On systems where it is not possible to sleep for periods\n\ | |
| 799 of time less than one second, @code{usleep} will pause the execution for\n\ | |
| 800 @code{round (@var{microseconds} / 1e6)} seconds.\n\ | |
| 801 @end deftypefn") | |
| 2630 | 802 { |
| 803 octave_value_list retval; | |
| 804 | |
| 805 if (args.length () == 1) | |
| 806 { | |
| 807 double dval = args(0).double_value (); | |
| 808 | |
| 809 if (! error_state) | |
| 810 { | |
| 811 if (xisnan (dval)) | |
| 812 warning ("usleep: NaN is an invalid delay"); | |
| 813 else | |
| 814 { | |
| 6423 | 815 feval ("drawnow"); |
| 816 | |
| 2630 | 817 int delay = NINT (dval); |
| 2631 | 818 |
| 2630 | 819 if (delay > 0) |
| 3308 | 820 octave_usleep (delay); |
| 2630 | 821 } |
| 822 } | |
| 823 } | |
| 824 else | |
| 5823 | 825 print_usage (); |
| 529 | 826 |
| 827 return retval; | |
| 828 } | |
| 829 | |
| 5775 | 830 // FIXME -- maybe this should only return 1 if IEEE floating |
| 862 | 831 // point functions really work. |
| 832 | |
| 1957 | 833 DEFUN (isieee, , , |
| 3301 | 834 "-*- texinfo -*-\n\ |
| 835 @deftypefn {Built-in Function} {} isieee ()\n\ | |
| 836 Return 1 if your computer claims to conform to the IEEE standard for\n\ | |
| 837 floating point calculations.\n\ | |
| 838 @end deftypefn") | |
| 862 | 839 { |
| 4600 | 840 oct_mach_info::float_format flt_fmt = oct_mach_info::native_float_format (); |
| 2317 | 841 |
| 4574 | 842 return octave_value (flt_fmt == oct_mach_info::flt_fmt_ieee_little_endian |
| 843 || flt_fmt == oct_mach_info::flt_fmt_ieee_big_endian); | |
| 862 | 844 } |
| 845 | |
| 4600 | 846 DEFUN (native_float_format, , , |
| 847 "-*- texinfo -*-\n\ | |
| 848 @deftypefn {Built-in Function} {} native_float_format ()\n\ | |
| 849 Return the native floating point format as a string\n\ | |
| 850 @end deftypefn") | |
| 851 { | |
| 852 oct_mach_info::float_format flt_fmt = oct_mach_info::native_float_format (); | |
| 853 | |
| 854 return octave_value (oct_mach_info::float_format_as_string (flt_fmt)); | |
| 855 } | |
| 856 | |
| 1957 | 857 DEFUN (tilde_expand, args, , |
| 3301 | 858 "-*- texinfo -*-\n\ |
| 859 @deftypefn {Built-in Function} {} tilde_expand (@var{string})\n\ | |
| 860 Performs tilde expansion on @var{string}. If @var{string} begins with a\n\ | |
| 861 tilde character, (@samp{~}), all of the characters preceding the first\n\ | |
| 862 slash (or all characters, if there is no slash) are treated as a\n\ | |
| 863 possible user name, and the tilde and the following characters up to the\n\ | |
| 864 slash are replaced by the home directory of the named user. If the\n\ | |
| 865 tilde is followed immediately by a slash, the tilde is replaced by the\n\ | |
| 866 home directory of the user running Octave. For example,\n\ | |
| 867 \n\ | |
| 868 @example\n\ | |
| 869 @group\n\ | |
| 870 tilde_expand (\"~joeuser/bin\")\n\ | |
| 871 @result{} \"/home/joeuser/bin\"\n\ | |
| 872 tilde_expand (\"~/bin\")\n\ | |
| 873 @result{} \"/home/jwe/bin\"\n\ | |
| 874 @end group\n\ | |
| 875 @end example\n\ | |
| 876 @end deftypefn") | |
| 1750 | 877 { |
| 4233 | 878 octave_value retval; |
| 1750 | 879 |
| 880 int nargin = args.length (); | |
| 881 | |
| 882 if (nargin == 1) | |
| 6116 | 883 { |
| 884 octave_value arg = args(0); | |
| 885 | |
| 886 string_vector sv = arg.all_strings (); | |
| 887 | |
| 888 if (! error_state) | |
| 889 { | |
| 890 sv = file_ops::tilde_expand (sv); | |
| 891 | |
| 892 if (arg.is_cellstr ()) | |
| 893 retval = Cell (arg.dims (), sv); | |
| 894 else | |
| 895 retval = sv; | |
| 896 } | |
| 897 else | |
| 898 error ("tilde_expand: expecting argument to be char or cellstr object"); | |
| 899 } | |
| 1750 | 900 else |
| 5823 | 901 print_usage (); |
| 1750 | 902 |
| 903 return retval; | |
| 904 } | |
| 905 | |
| 2552 | 906 #if defined (__EMX__) && defined (OS2) |
| 907 | |
| 4208 | 908 DEFCMD (extproc, , , |
| 2926 | 909 "extproc: ignored by Octave") |
| 2552 | 910 { |
| 911 return octave_value_list (); | |
| 912 } | |
| 913 | |
| 914 DEFALIAS (EXTPROC, extproc); | |
| 915 | |
| 916 #endif | |
| 917 | |
| 529 | 918 /* |
| 1 | 919 ;;; Local Variables: *** |
| 920 ;;; mode: C++ *** | |
| 921 ;;; End: *** | |
| 922 */ |