Mercurial > hg > octave-nkf
annotate src/sysdep.cc @ 10840:89f4d7e294cc
Grammarcheck .cc files
| author | Rik <octave@nomad.inbox5.com> |
|---|---|
| date | Sat, 31 Jul 2010 11:18:11 -0700 |
| parents | 57a59eae83cc |
| children | 2f36145742c9 |
| rev | line source |
|---|---|
| 1 | 1 /* |
| 2 | |
| 7017 | 3 Copyright (C) 1993, 1994, 1995, 1996, 1997, 1999, 2000, 2002, 2003, |
| 8920 | 4 2005, 2006, 2007, 2008, 2009 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 | |
| 529 | 37 #include <sys/types.h> |
| 38 #include <unistd.h> | |
| 1 | 39 |
| 1430 | 40 #if defined (HAVE_TERMIOS_H) |
| 41 #include <termios.h> | |
| 42 #elif defined (HAVE_TERMIO_H) | |
| 43 #include <termio.h> | |
| 44 #elif defined (HAVE_SGTTY_H) | |
| 45 #include <sgtty.h> | |
| 4067 | 46 #endif |
| 47 | |
| 48 #if defined (HAVE_CONIO_H) | |
| 49 #include <conio.h> | |
| 1430 | 50 #endif |
| 51 | |
| 3248 | 52 #if defined (HAVE_SYS_IOCTL_H) |
| 53 #include <sys/ioctl.h> | |
| 54 #endif | |
| 55 | |
| 1463 | 56 #if defined (HAVE_FLOATINGPOINT_H) |
| 57 #include <floatingpoint.h> | |
| 58 #endif | |
| 59 | |
| 2508 | 60 #if defined (HAVE_IEEEFP_H) |
| 61 #include <ieeefp.h> | |
| 62 #endif | |
| 63 | |
| 2926 | 64 #include "cmd-edit.h" |
| 65 #include "file-ops.h" | |
| 2893 | 66 #include "lo-mappers.h" |
| 7231 | 67 #include "lo-math.h" |
| 2317 | 68 #include "mach-info.h" |
| 2926 | 69 #include "oct-env.h" |
| 5451 | 70 #include "quit.h" |
| 1769 | 71 |
| 6208 | 72 #include "Cell.h" |
| 1352 | 73 #include "defun.h" |
| 74 #include "error.h" | |
| 529 | 75 #include "input.h" |
| 1755 | 76 #include "oct-obj.h" |
| 2370 | 77 #include "ov.h" |
| 3234 | 78 #include "pager.h" |
| 6419 | 79 #include "parse.h" |
| 5770 | 80 #include "sighandlers.h" |
| 1352 | 81 #include "sysdep.h" |
| 1755 | 82 #include "toplev.h" |
| 529 | 83 #include "utils.h" |
| 6598 | 84 #include "file-stat.h" |
| 529 | 85 |
| 86 #ifndef STDIN_FILENO | |
| 87 #define STDIN_FILENO 1 | |
| 88 #endif | |
| 444 | 89 |
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90 #if defined (__386BSD__) || defined (__FreeBSD__) || defined (__NetBSD__) |
| 2508 | 91 static void |
| 92 BSD_init (void) | |
| 93 { | |
| 94 #if defined (HAVE_FLOATINGPOINT_H) | |
| 95 // Disable trapping on common exceptions. | |
| 4164 | 96 #ifndef FP_X_DNML |
| 97 #define FP_X_DNML 0 | |
| 98 #endif | |
| 2508 | 99 fpsetmask (~(FP_X_OFL|FP_X_INV|FP_X_DZ|FP_X_DNML|FP_X_UFL|FP_X_IMP)); |
| 100 #endif | |
| 101 } | |
| 102 #endif | |
| 103 | |
| 6956 | 104 #if defined (__WIN32__) && ! defined (_POSIX_VERSION) |
| 6080 | 105 static void |
| 106 w32_set_octave_home (void) | |
| 107 { | |
| 108 int n = 1024; | |
| 109 | |
| 6086 | 110 std::string bin_dir (n, '\0'); |
| 6080 | 111 |
| 112 while (true) | |
| 113 { | |
| 6954 | 114 HMODULE hMod = GetModuleHandle ("octinterp"); |
| 115 int status = GetModuleFileName (hMod, &bin_dir[0], n); | |
| 6080 | 116 |
| 117 if (status < n) | |
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118 { |
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119 bin_dir.resize (status); |
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120 break; |
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121 } |
| 6080 | 122 else |
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123 { |
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124 n *= 2; |
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125 bin_dir.resize (n); |
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126 } |
| 6080 | 127 } |
| 128 | |
| 129 if (! bin_dir.empty ()) | |
| 130 { | |
| 131 size_t pos = bin_dir.rfind ("\\bin\\"); | |
| 132 | |
| 8021 | 133 if (pos != std::string::npos) |
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134 octave_env::putenv ("OCTAVE_HOME", bin_dir.substr (0, pos)); |
| 6080 | 135 } |
| 136 } | |
| 137 | |
| 6960 | 138 void |
| 5451 | 139 w32_set_quiet_shutdown (void) |
| 140 { | |
| 141 // Let the user close the console window or shutdown without the | |
| 142 // pesky dialog. | |
| 143 // | |
| 5775 | 144 // FIXME -- should this be user configurable? |
| 5451 | 145 SetProcessShutdownParameters (0x280, SHUTDOWN_NORETRY); |
| 146 } | |
| 147 | |
| 6960 | 148 void |
| 5451 | 149 MINGW_signal_cleanup (void) |
| 150 { | |
| 5455 | 151 w32_set_quiet_shutdown (); |
| 5451 | 152 |
| 5455 | 153 w32_raise_final (); |
| 5451 | 154 } |
| 155 #endif | |
| 156 | |
| 157 #if defined (__MINGW32__) | |
| 158 static void | |
| 159 MINGW_init (void) | |
| 160 { | |
| 6080 | 161 w32_set_octave_home (); |
| 162 | |
| 5451 | 163 // Init mutex to protect setjmp/longjmp and get main thread context |
| 164 w32_sigint_init (); | |
| 165 | |
| 166 w32_set_quiet_shutdown (); | |
| 167 } | |
| 168 #endif | |
| 169 | |
| 6080 | 170 #if defined (_MSC_VER) |
| 171 static void | |
| 172 MSVC_init (void) | |
| 173 { | |
| 174 w32_set_octave_home (); | |
| 6135 | 175 |
| 176 // Init mutex to protect setjmp/longjmp and get main thread context | |
| 177 w32_sigint_init (); | |
| 178 | |
| 179 w32_set_quiet_shutdown (); | |
| 6080 | 180 } |
| 181 #endif | |
| 182 | |
| 4091 | 183 |
| 6598 | 184 // Return TRUE if FILE1 and FILE2 refer to the same (physical) file. |
| 185 | |
| 186 bool | |
| 187 same_file_internal (const std::string& file1, const std::string& file2) | |
| 188 { | |
| 189 #ifdef OCTAVE_USE_WINDOWS_API | |
| 190 | |
| 6691 | 191 bool retval = false; |
| 192 | |
| 6598 | 193 // Windows native code |
| 194 // Reference: http://msdn2.microsoft.com/en-us/library/aa363788.aspx | |
| 195 | |
| 6691 | 196 HANDLE hfile1 = CreateFile (file1.c_str (), 0, FILE_SHARE_READ, 0, |
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197 OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0); |
| 6691 | 198 |
| 199 if (hfile1 != INVALID_HANDLE_VALUE) | |
| 200 { | |
| 201 HANDLE hfile2 = CreateFile (file2.c_str (), 0, FILE_SHARE_READ, 0, | |
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202 OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0); |
| 6598 | 203 |
| 6691 | 204 if (hfile2 != INVALID_HANDLE_VALUE) |
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205 { |
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206 BY_HANDLE_FILE_INFORMATION hfi1; |
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207 BY_HANDLE_FILE_INFORMATION hfi2; |
| 6691 | 208 |
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209 if (GetFileInformationByHandle (hfile1, &hfi1) |
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210 && GetFileInformationByHandle (hfile2, &hfi2)) |
| 6598 | 211 |
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212 retval = (hfi1.dwVolumeSerialNumber == hfi2.dwVolumeSerialNumber |
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213 && hfi1.nFileIndexHigh == hfi2.nFileIndexHigh |
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214 && hfi1.nFileIndexLow == hfi2.nFileIndexLow); |
| 6598 | 215 |
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216 CloseHandle (hfile2); |
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217 } |
| 6691 | 218 |
| 6598 | 219 CloseHandle (hfile1); |
| 220 } | |
| 6691 | 221 |
| 222 return retval; | |
| 6598 | 223 |
| 224 #else | |
| 225 | |
| 226 // POSIX Code | |
| 227 | |
| 228 file_stat fs_file1 (file1); | |
| 229 file_stat fs_file2 (file2); | |
| 230 | |
| 231 return (fs_file1 && fs_file2 | |
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232 && fs_file1.ino () == fs_file2.ino () |
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233 && fs_file1.dev () == fs_file2.dev ()); |
| 6598 | 234 |
| 235 #endif | |
| 236 } | |
| 237 | |
| 4284 | 238 #if defined (__DECCXX) |
| 239 | |
| 240 // These don't seem to be instantiated automatically... | |
| 241 | |
| 242 template std::istream& | |
| 243 std::operator >> (std::istream&, std::complex<double>&); | |
| 244 | |
| 245 template std::string& | |
| 246 std::string::append (const std::string&, size_t, size_t); | |
| 247 | |
| 248 #endif | |
| 249 | |
| 2610 | 250 #if defined (NeXT) |
| 1 | 251 extern "C" |
| 252 { | |
| 253 typedef void (*_cplus_fcn_int) (int); | |
| 254 extern void (*malloc_error (_cplus_fcn_int)) (int); | |
| 255 } | |
| 256 | |
| 257 static void | |
| 258 malloc_handler (int code) | |
| 259 { | |
| 260 if (code == 5) | |
| 217 | 261 warning ("hopefully recoverable malloc error: freeing wild pointer"); |
| 1 | 262 else |
| 2926 | 263 panic ("probably irrecoverable malloc error: code %d", code); |
| 1 | 264 } |
| 265 | |
| 266 static void | |
| 267 NeXT_init (void) | |
| 268 { | |
| 269 malloc_error (malloc_handler); | |
| 270 } | |
| 3333 | 271 #endif |
| 1 | 272 |
| 2546 | 273 #if defined (__EMX__) |
| 274 OS2_init (void) | |
| 275 { | |
| 276 _control87 ((EM_INVALID | EM_DENORMAL | EM_ZERODIVIDE | EM_OVERFLOW | |
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277 | EM_UNDERFLOW | EM_INEXACT), MCW_EM); |
| 2546 | 278 } |
| 279 #endif | |
| 280 | |
| 2508 | 281 #if defined (SCO) |
| 282 static void | |
| 283 SCO_init (void) | |
| 284 { | |
| 285 #if defined (HAVE_IEEEFP_H) | |
| 286 // Disable trapping on common exceptions. | |
| 287 fpsetmask (~(FP_X_OFL|FP_X_INV|FP_X_DZ|FP_X_DNML|FP_X_UFL|FP_X_IMP)); | |
| 288 #endif | |
| 289 } | |
| 290 #endif | |
| 291 | |
| 1 | 292 void |
| 293 sysdep_init (void) | |
| 294 { | |
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295 #if defined (__386BSD__) || defined (__FreeBSD__) || defined(__NetBSD__) |
| 2508 | 296 BSD_init (); |
| 5451 | 297 #elif defined (__MINGW32__) |
| 298 MINGW_init (); | |
| 6080 | 299 #elif defined (_MSC_VER) |
| 300 MSVC_init (); | |
| 2610 | 301 #elif defined (NeXT) |
| 1 | 302 NeXT_init (); |
| 2610 | 303 #elif defined (__EMX__) |
| 2546 | 304 OS2_init (); |
| 2508 | 305 #elif defined (SCO) |
| 306 SCO_init (); | |
| 1 | 307 #endif |
| 444 | 308 |
| 309 octave_ieee_init (); | |
| 1 | 310 } |
| 311 | |
| 5451 | 312 void |
| 313 sysdep_cleanup (void) | |
| 314 { | |
| 315 MINGW_SIGNAL_CLEANUP (); | |
| 316 } | |
| 317 | |
| 767 | 318 // Set terminal in raw mode. From less-177. |
| 319 // | |
| 320 // Change terminal to "raw mode", or restore to "normal" mode. | |
| 321 // "Raw mode" means | |
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322 // 1. An outstanding read will complete on receipt of a single keystroke. |
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323 // 2. Input is not echoed. |
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324 // 3. On output, \n is mapped to \r\n. |
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325 // 4. \t is NOT expanded into spaces. |
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326 // 5. Signal-causing characters such as ctrl-C (interrupt), |
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327 // etc. are NOT disabled. |
| 767 | 328 // It doesn't matter whether an input \n is mapped to \r, or vice versa. |
| 329 | |
| 529 | 330 void |
| 3657 | 331 raw_mode (bool on, bool wait) |
| 529 | 332 { |
| 3657 | 333 static bool curr_on = false; |
| 529 | 334 |
| 335 int tty_fd = STDIN_FILENO; | |
| 336 if (! isatty (tty_fd)) | |
| 337 { | |
| 338 if (interactive) | |
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339 error ("stdin is not a tty!"); |
| 529 | 340 return; |
| 341 } | |
| 342 | |
| 343 if (on == curr_on) | |
| 344 return; | |
| 345 | |
| 346 #if defined (HAVE_TERMIOS_H) | |
| 347 { | |
| 348 struct termios s; | |
| 349 static struct termios save_term; | |
| 350 | |
| 351 if (on) | |
| 352 { | |
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353 // Get terminal modes. |
| 529 | 354 |
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355 tcgetattr (tty_fd, &s); |
| 529 | 356 |
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357 // Save modes and set certain variables dependent on modes. |
| 529 | 358 |
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359 save_term = s; |
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360 // ospeed = s.c_cflag & CBAUD; |
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361 // erase_char = s.c_cc[VERASE]; |
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362 // kill_char = s.c_cc[VKILL]; |
| 529 | 363 |
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364 // Set the modes to the way we want them. |
| 529 | 365 |
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366 s.c_lflag &= ~(ICANON|ECHO|ECHOE|ECHOK|ECHONL); |
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367 s.c_oflag |= (OPOST|ONLCR); |
| 529 | 368 #if defined (OCRNL) |
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369 s.c_oflag &= ~(OCRNL); |
| 529 | 370 #endif |
| 371 #if defined (ONOCR) | |
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372 s.c_oflag &= ~(ONOCR); |
| 529 | 373 #endif |
| 374 #if defined (ONLRET) | |
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375 s.c_oflag &= ~(ONLRET); |
| 529 | 376 #endif |
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377 s.c_cc[VMIN] = wait ? 1 : 0; |
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378 s.c_cc[VTIME] = 0; |
| 529 | 379 } |
| 380 else | |
| 381 { | |
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382 // Restore saved modes. |
| 1358 | 383 |
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384 s = save_term; |
| 529 | 385 } |
| 3658 | 386 |
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387 tcsetattr (tty_fd, wait ? TCSAFLUSH : TCSADRAIN, &s); |
| 529 | 388 } |
| 389 #elif defined (HAVE_TERMIO_H) | |
| 390 { | |
| 391 struct termio s; | |
| 392 static struct termio save_term; | |
| 393 | |
| 394 if (on) | |
| 395 { | |
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396 // Get terminal modes. |
| 529 | 397 |
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398 ioctl (tty_fd, TCGETA, &s); |
| 529 | 399 |
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400 // Save modes and set certain variables dependent on modes. |
| 529 | 401 |
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402 save_term = s; |
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403 // ospeed = s.c_cflag & CBAUD; |
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404 // erase_char = s.c_cc[VERASE]; |
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405 // kill_char = s.c_cc[VKILL]; |
| 529 | 406 |
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407 // Set the modes to the way we want them. |
| 529 | 408 |
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409 s.c_lflag &= ~(ICANON|ECHO|ECHOE|ECHOK|ECHONL); |
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410 s.c_oflag |= (OPOST|ONLCR); |
| 529 | 411 #if defined (OCRNL) |
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412 s.c_oflag &= ~(OCRNL); |
| 529 | 413 #endif |
| 414 #if defined (ONOCR) | |
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415 s.c_oflag &= ~(ONOCR); |
| 529 | 416 #endif |
| 417 #if defined (ONLRET) | |
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418 s.c_oflag &= ~(ONLRET); |
| 529 | 419 #endif |
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420 s.c_cc[VMIN] = wait ? 1 : 0; |
| 529 | 421 } |
| 422 else | |
| 423 { | |
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424 // Restore saved modes. |
| 1358 | 425 |
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426 s = save_term; |
| 529 | 427 } |
| 3658 | 428 |
| 529 | 429 ioctl (tty_fd, TCSETAW, &s); |
| 430 } | |
| 431 #elif defined (HAVE_SGTTY_H) | |
| 432 { | |
| 433 struct sgttyb s; | |
| 434 static struct sgttyb save_term; | |
| 435 | |
| 436 if (on) | |
| 437 { | |
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438 // Get terminal modes. |
| 529 | 439 |
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440 ioctl (tty_fd, TIOCGETP, &s); |
| 529 | 441 |
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442 // Save modes and set certain variables dependent on modes. |
| 529 | 443 |
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444 save_term = s; |
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445 // ospeed = s.sg_ospeed; |
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446 // erase_char = s.sg_erase; |
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447 // kill_char = s.sg_kill; |
| 529 | 448 |
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449 // Set the modes to the way we want them. |
| 529 | 450 |
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451 s.sg_flags |= CBREAK; |
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452 s.sg_flags &= ~(ECHO); |
| 529 | 453 } |
| 454 else | |
| 455 { | |
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456 // Restore saved modes. |
| 1358 | 457 |
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458 s = save_term; |
| 529 | 459 } |
| 3658 | 460 |
| 529 | 461 ioctl (tty_fd, TIOCSETN, &s); |
| 462 } | |
| 463 #else | |
| 4064 | 464 warning ("no support for raw mode console I/O on this system"); |
| 465 | |
| 466 // Make sure the current mode doesn't toggle. | |
| 467 on = curr_on; | |
| 529 | 468 #endif |
| 469 | |
| 470 curr_on = on; | |
| 471 } | |
| 472 | |
| 6726 | 473 FILE * |
| 474 octave_popen (const char *command, const char *mode) | |
| 475 { | |
| 476 #if defined (__MINGW32__) || defined (_MSC_VER) | |
| 477 if (mode && mode[0] && ! mode[1]) | |
| 478 { | |
| 479 char tmode[3]; | |
| 480 tmode[0] = mode[0]; | |
| 481 tmode[1] = 'b'; | |
| 482 tmode[2] = 0; | |
| 483 | |
| 484 return _popen (command, tmode); | |
| 485 } | |
| 486 else | |
| 487 return _popen (command, mode); | |
| 488 #else | |
| 489 return popen (command, mode); | |
| 490 #endif | |
| 491 } | |
| 492 | |
| 493 int | |
| 494 octave_pclose (FILE *f) | |
| 495 { | |
| 496 #if defined (__MINGW32__) || defined (_MSC_VER) | |
| 497 return _pclose (f); | |
| 498 #else | |
| 499 return pclose (f); | |
| 500 #endif | |
| 501 } | |
| 502 | |
| 767 | 503 // Read one character from the terminal. |
| 504 | |
| 529 | 505 int |
| 4067 | 506 octave_kbhit (bool wait) |
| 529 | 507 { |
| 4067 | 508 #ifdef HAVE__KBHIT |
| 4081 | 509 int c = (! wait && ! _kbhit ()) ? 0 : std::cin.get (); |
| 4067 | 510 #else |
| 3658 | 511 raw_mode (true, wait); |
| 512 | |
| 5770 | 513 // Get current handler. |
| 514 octave_interrupt_handler saved_interrupt_handler | |
| 515 = octave_ignore_interrupts (); | |
| 516 | |
| 517 // Restore it, disabling system call restarts (if possible) so the | |
| 518 // read can be interrupted. | |
| 519 | |
| 520 octave_set_interrupt_handler (saved_interrupt_handler, false); | |
| 521 | |
| 3658 | 522 int c = std::cin.get (); |
| 5770 | 523 |
| 3658 | 524 if (std::cin.fail () || std::cin.eof ()) |
| 525 std::cin.clear (); | |
| 526 | |
| 5770 | 527 // Restore it, enabling system call restarts (if possible). |
| 528 octave_set_interrupt_handler (saved_interrupt_handler, true); | |
| 529 | |
| 3658 | 530 raw_mode (false, true); |
| 4067 | 531 #endif |
| 3658 | 532 |
| 529 | 533 return c; |
| 534 } | |
| 535 | |
| 1957 | 536 DEFUN (clc, , , |
| 3332 | 537 "-*- texinfo -*-\n\ |
| 10840 | 538 @deftypefn {Built-in Function} {} clc ()\n\ |
| 3332 | 539 @deftypefnx {Built-in Function} {} home ()\n\ |
| 540 Clear the terminal screen and move the cursor to the upper left corner.\n\ | |
| 3333 | 541 @end deftypefn") |
| 529 | 542 { |
| 2926 | 543 command_editor::clear_screen (); |
| 529 | 544 |
| 2926 | 545 return octave_value_list (); |
| 529 | 546 } |
| 547 | |
| 549 | 548 DEFALIAS (home, clc); |
| 549 | |
| 1957 | 550 DEFUN (getenv, args, , |
| 3301 | 551 "-*- texinfo -*-\n\ |
| 552 @deftypefn {Built-in Function} {} getenv (@var{var})\n\ | |
| 553 Return the value of the environment variable @var{var}. For example,\n\ | |
| 554 \n\ | |
| 555 @example\n\ | |
| 556 getenv (\"PATH\")\n\ | |
| 557 @end example\n\ | |
| 558 \n\ | |
| 559 @noindent\n\ | |
| 560 returns a string containing the value of your path.\n\ | |
| 561 @end deftypefn") | |
| 529 | 562 { |
| 4233 | 563 octave_value retval; |
| 529 | 564 |
| 565 int nargin = args.length (); | |
| 566 | |
| 712 | 567 if (nargin == 1) |
| 529 | 568 { |
| 3523 | 569 std::string name = args(0).string_value (); |
| 636 | 570 |
| 571 if (! error_state) | |
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572 retval = octave_env::getenv (name); |
| 529 | 573 } |
| 574 else | |
| 5823 | 575 print_usage (); |
| 529 | 576 |
| 577 return retval; | |
| 578 } | |
| 579 | |
| 1957 | 580 DEFUN (putenv, args, , |
| 3301 | 581 "-*- texinfo -*-\n\ |
| 10840 | 582 @deftypefn {Built-in Function} {} putenv (@var{var}, @var{value})\n\ |
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583 @deftypefnx {Built-in Function} {} setenv (@var{var}, @var{value})\n\ |
| 3301 | 584 Set the value of the environment variable @var{var} to @var{value}.\n\ |
| 585 @end deftypefn") | |
| 1706 | 586 { |
| 2086 | 587 octave_value_list retval; |
| 1706 | 588 |
| 589 int nargin = args.length (); | |
| 590 | |
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591 if (nargin == 2 || nargin == 1) |
| 1706 | 592 { |
| 3523 | 593 std::string var = args(0).string_value (); |
| 1706 | 594 |
| 595 if (! error_state) | |
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596 { |
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597 std::string val = (nargin == 2 |
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598 ? args(1).string_value () : std::string ()); |
| 1706 | 599 |
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600 if (! error_state) |
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601 octave_env::putenv (var, val); |
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602 else |
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603 error ("putenv: second argument should be a string"); |
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604 } |
| 1706 | 605 else |
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606 error ("putenv: first argument should be a string"); |
| 1706 | 607 } |
| 608 else | |
| 5823 | 609 print_usage (); |
| 1706 | 610 |
| 611 return retval; | |
| 612 } | |
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613 DEFALIAS (setenv, putenv); |
| 1706 | 614 |
| 5775 | 615 // FIXME -- perhaps kbhit should also be able to print a prompt? |
| 3372 | 616 |
| 3657 | 617 DEFUN (kbhit, args, , |
| 3372 | 618 "-*- texinfo -*-\n\ |
| 619 @deftypefn {Built-in Function} {} kbhit ()\n\ | |
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620 Read a single keystroke from the keyboard. If called with one\n\ |
| 3657 | 621 argument, don't wait for a keypress. For example,\n\ |
| 3372 | 622 \n\ |
| 623 @example\n\ | |
| 624 x = kbhit ();\n\ | |
| 625 @end example\n\ | |
| 626 \n\ | |
| 627 @noindent\n\ | |
| 628 will set @var{x} to the next character typed at the keyboard as soon as\n\ | |
| 629 it is typed.\n\ | |
| 3657 | 630 \n\ |
| 631 @example\n\ | |
| 632 x = kbhit (1);\n\ | |
| 633 @end example\n\ | |
| 634 \n\ | |
| 635 @noindent\n\ | |
| 636 identical to the above example, but don't wait for a keypress,\n\ | |
| 637 returning the empty string if no key is available.\n\ | |
| 3372 | 638 @end deftypefn") |
| 529 | 639 { |
| 4233 | 640 octave_value retval; |
| 529 | 641 |
| 5775 | 642 // FIXME -- add timeout and default value args? |
| 529 | 643 |
| 3676 | 644 if (interactive || forced_interactive) |
| 529 | 645 { |
| 6423 | 646 feval ("drawnow"); |
| 647 | |
| 4067 | 648 int c = octave_kbhit (args.length () == 0); |
| 3657 | 649 |
| 3658 | 650 if (c == -1) |
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651 c = 0; |
| 3657 | 652 |
| 529 | 653 char *s = new char [2]; |
| 654 s[0] = c; | |
| 655 s[1] = '\0'; | |
| 656 retval = s; | |
| 657 } | |
| 658 | |
| 659 return retval; | |
| 660 } | |
| 661 | |
| 1957 | 662 DEFUN (pause, args, , |
| 3301 | 663 "-*- texinfo -*-\n\ |
| 664 @deftypefn {Built-in Function} {} pause (@var{seconds})\n\ | |
| 665 Suspend the execution of the program. If invoked without any arguments,\n\ | |
| 666 Octave waits until you type a character. With a numeric argument, it\n\ | |
| 667 pauses for the given number of seconds. For example, the following\n\ | |
| 668 statement prints a message and then waits 5 seconds before clearing the\n\ | |
| 669 screen.\n\ | |
| 670 \n\ | |
| 671 @example\n\ | |
| 672 @group\n\ | |
| 6848 | 673 fprintf (stderr, \"wait please...\\n\");\n\ |
| 3301 | 674 pause (5);\n\ |
| 675 clc;\n\ | |
| 676 @end group\n\ | |
| 677 @end example\n\ | |
| 678 @end deftypefn") | |
| 529 | 679 { |
| 2086 | 680 octave_value_list retval; |
| 529 | 681 |
| 682 int nargin = args.length (); | |
| 683 | |
| 712 | 684 if (! (nargin == 0 || nargin == 1)) |
| 529 | 685 { |
| 5823 | 686 print_usage (); |
| 529 | 687 return retval; |
| 688 } | |
| 689 | |
| 1579 | 690 if (nargin == 1) |
| 529 | 691 { |
| 1579 | 692 double dval = args(0).double_value (); |
| 636 | 693 |
| 1579 | 694 if (! error_state) |
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695 { |
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696 if (! xisnan (dval)) |
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697 { |
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698 feval ("drawnow"); |
| 6419 | 699 |
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700 if (xisinf (dval)) |
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701 { |
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702 flush_octave_stdout (); |
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703 octave_kbhit (); |
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704 } |
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705 else |
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706 octave_sleep (dval); |
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707 } |
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708 else |
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709 warning ("pause: NaN is an invalid delay"); |
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710 } |
| 529 | 711 } |
| 1579 | 712 else |
| 3234 | 713 { |
| 6423 | 714 feval ("drawnow"); |
| 3234 | 715 flush_octave_stdout (); |
| 4067 | 716 octave_kbhit (); |
| 3234 | 717 } |
| 2630 | 718 |
| 719 return retval; | |
| 720 } | |
| 721 | |
| 722 DEFUN (sleep, args, , | |
| 3301 | 723 "-*- texinfo -*-\n\ |
| 724 @deftypefn {Built-in Function} {} sleep (@var{seconds})\n\ | |
| 725 Suspend the execution of the program for the given number of seconds.\n\ | |
| 726 @end deftypefn") | |
| 2630 | 727 { |
| 728 octave_value_list retval; | |
| 729 | |
| 730 if (args.length () == 1) | |
| 1579 | 731 { |
| 2630 | 732 double dval = args(0).double_value (); |
| 733 | |
| 734 if (! error_state) | |
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735 { |
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736 if (xisnan (dval)) |
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737 warning ("sleep: NaN is an invalid delay"); |
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738 else |
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739 { |
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740 feval ("drawnow"); |
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741 octave_sleep (dval); |
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742 } |
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743 } |
| 1579 | 744 } |
| 2630 | 745 else |
| 5823 | 746 print_usage (); |
| 2630 | 747 |
| 748 return retval; | |
| 749 } | |
| 750 | |
| 751 DEFUN (usleep, args, , | |
| 3301 | 752 "-*- texinfo -*-\n\ |
| 753 @deftypefn {Built-in Function} {} usleep (@var{microseconds})\n\ | |
| 754 Suspend the execution of the program for the given number of\n\ | |
| 755 microseconds. On systems where it is not possible to sleep for periods\n\ | |
| 756 of time less than one second, @code{usleep} will pause the execution for\n\ | |
| 757 @code{round (@var{microseconds} / 1e6)} seconds.\n\ | |
| 758 @end deftypefn") | |
| 2630 | 759 { |
| 760 octave_value_list retval; | |
| 761 | |
| 762 if (args.length () == 1) | |
| 763 { | |
| 764 double dval = args(0).double_value (); | |
| 765 | |
| 766 if (! error_state) | |
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767 { |
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768 if (xisnan (dval)) |
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769 warning ("usleep: NaN is an invalid delay"); |
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770 else |
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771 { |
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772 feval ("drawnow"); |
| 6423 | 773 |
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774 int delay = NINT (dval); |
| 2631 | 775 |
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776 if (delay > 0) |
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777 octave_usleep (delay); |
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778 } |
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779 } |
| 2630 | 780 } |
| 781 else | |
| 5823 | 782 print_usage (); |
| 529 | 783 |
| 784 return retval; | |
| 785 } | |
| 786 | |
| 5775 | 787 // FIXME -- maybe this should only return 1 if IEEE floating |
| 862 | 788 // point functions really work. |
| 789 | |
| 1957 | 790 DEFUN (isieee, , , |
| 3301 | 791 "-*- texinfo -*-\n\ |
| 792 @deftypefn {Built-in Function} {} isieee ()\n\ | |
| 793 Return 1 if your computer claims to conform to the IEEE standard for\n\ | |
| 794 floating point calculations.\n\ | |
| 795 @end deftypefn") | |
| 862 | 796 { |
| 4600 | 797 oct_mach_info::float_format flt_fmt = oct_mach_info::native_float_format (); |
| 2317 | 798 |
| 4574 | 799 return octave_value (flt_fmt == oct_mach_info::flt_fmt_ieee_little_endian |
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800 || flt_fmt == oct_mach_info::flt_fmt_ieee_big_endian); |
| 862 | 801 } |
| 802 | |
| 4600 | 803 DEFUN (native_float_format, , , |
| 804 "-*- texinfo -*-\n\ | |
| 805 @deftypefn {Built-in Function} {} native_float_format ()\n\ | |
| 806 Return the native floating point format as a string\n\ | |
| 807 @end deftypefn") | |
| 808 { | |
| 809 oct_mach_info::float_format flt_fmt = oct_mach_info::native_float_format (); | |
| 810 | |
| 811 return octave_value (oct_mach_info::float_format_as_string (flt_fmt)); | |
| 812 } | |
| 813 | |
| 1957 | 814 DEFUN (tilde_expand, args, , |
| 3301 | 815 "-*- texinfo -*-\n\ |
| 816 @deftypefn {Built-in Function} {} tilde_expand (@var{string})\n\ | |
| 817 Performs tilde expansion on @var{string}. If @var{string} begins with a\n\ | |
| 818 tilde character, (@samp{~}), all of the characters preceding the first\n\ | |
| 819 slash (or all characters, if there is no slash) are treated as a\n\ | |
| 820 possible user name, and the tilde and the following characters up to the\n\ | |
| 821 slash are replaced by the home directory of the named user. If the\n\ | |
| 822 tilde is followed immediately by a slash, the tilde is replaced by the\n\ | |
| 10840 | 823 home directory of the user running Octave. For example:\n\ |
| 3301 | 824 \n\ |
| 825 @example\n\ | |
| 826 @group\n\ | |
| 827 tilde_expand (\"~joeuser/bin\")\n\ | |
| 828 @result{} \"/home/joeuser/bin\"\n\ | |
| 829 tilde_expand (\"~/bin\")\n\ | |
| 830 @result{} \"/home/jwe/bin\"\n\ | |
| 831 @end group\n\ | |
| 832 @end example\n\ | |
| 833 @end deftypefn") | |
| 1750 | 834 { |
| 4233 | 835 octave_value retval; |
| 1750 | 836 |
| 837 int nargin = args.length (); | |
| 838 | |
| 839 if (nargin == 1) | |
| 6116 | 840 { |
| 841 octave_value arg = args(0); | |
| 842 | |
| 843 string_vector sv = arg.all_strings (); | |
| 844 | |
| 845 if (! error_state) | |
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846 { |
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847 sv = file_ops::tilde_expand (sv); |
| 6116 | 848 |
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849 if (arg.is_cellstr ()) |
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850 retval = Cell (arg.dims (), sv); |
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851 else |
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852 retval = sv; |
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853 } |
| 6116 | 854 else |
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855 error ("tilde_expand: expecting argument to be char or cellstr object"); |
| 6116 | 856 } |
| 1750 | 857 else |
| 5823 | 858 print_usage (); |
| 1750 | 859 |
| 860 return retval; | |
| 861 } | |
| 862 | |
| 2552 | 863 #if defined (__EMX__) && defined (OS2) |
| 864 | |
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865 DEFUN (extproc, , , |
| 2926 | 866 "extproc: ignored by Octave") |
| 2552 | 867 { |
| 868 return octave_value_list (); | |
| 869 } | |
| 870 | |
| 871 DEFALIAS (EXTPROC, extproc); | |
| 872 | |
| 873 #endif |