Mercurial > octave-nkf
annotate src/sysdep.cc @ 11232:88e4ea8b2c19
eliminate special cases for NeXT systems
| author | John W. Eaton <jwe@octave.org> |
|---|---|
| date | Wed, 10 Nov 2010 21:01:54 -0500 |
| parents | 2f29b765c0ef |
| children | 1dfbcc9eee92 |
| 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 | |
| 1 | 250 void |
| 251 sysdep_init (void) | |
| 252 { | |
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253 #if defined (__386BSD__) || defined (__FreeBSD__) || defined(__NetBSD__) |
| 2508 | 254 BSD_init (); |
| 5451 | 255 #elif defined (__MINGW32__) |
| 256 MINGW_init (); | |
| 6080 | 257 #elif defined (_MSC_VER) |
| 258 MSVC_init (); | |
| 1 | 259 #endif |
| 444 | 260 |
| 261 octave_ieee_init (); | |
| 1 | 262 } |
| 263 | |
| 5451 | 264 void |
| 265 sysdep_cleanup (void) | |
| 266 { | |
| 267 MINGW_SIGNAL_CLEANUP (); | |
| 268 } | |
| 269 | |
| 767 | 270 // Set terminal in raw mode. From less-177. |
| 271 // | |
| 272 // Change terminal to "raw mode", or restore to "normal" mode. | |
| 273 // "Raw mode" means | |
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274 // 1. An outstanding read will complete on receipt of a single keystroke. |
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275 // 2. Input is not echoed. |
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276 // 3. On output, \n is mapped to \r\n. |
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277 // 4. \t is NOT expanded into spaces. |
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278 // 5. Signal-causing characters such as ctrl-C (interrupt), |
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279 // etc. are NOT disabled. |
| 767 | 280 // It doesn't matter whether an input \n is mapped to \r, or vice versa. |
| 281 | |
| 529 | 282 void |
| 3657 | 283 raw_mode (bool on, bool wait) |
| 529 | 284 { |
| 3657 | 285 static bool curr_on = false; |
| 529 | 286 |
| 287 int tty_fd = STDIN_FILENO; | |
| 288 if (! isatty (tty_fd)) | |
| 289 { | |
| 290 if (interactive) | |
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291 error ("stdin is not a tty!"); |
| 529 | 292 return; |
| 293 } | |
| 294 | |
| 295 if (on == curr_on) | |
| 296 return; | |
| 297 | |
| 298 #if defined (HAVE_TERMIOS_H) | |
| 299 { | |
| 300 struct termios s; | |
| 301 static struct termios save_term; | |
| 302 | |
| 303 if (on) | |
| 304 { | |
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305 // Get terminal modes. |
| 529 | 306 |
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307 tcgetattr (tty_fd, &s); |
| 529 | 308 |
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309 // Save modes and set certain variables dependent on modes. |
| 529 | 310 |
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311 save_term = s; |
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312 // ospeed = s.c_cflag & CBAUD; |
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313 // erase_char = s.c_cc[VERASE]; |
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314 // kill_char = s.c_cc[VKILL]; |
| 529 | 315 |
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316 // Set the modes to the way we want them. |
| 529 | 317 |
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318 s.c_lflag &= ~(ICANON|ECHO|ECHOE|ECHOK|ECHONL); |
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319 s.c_oflag |= (OPOST|ONLCR); |
| 529 | 320 #if defined (OCRNL) |
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321 s.c_oflag &= ~(OCRNL); |
| 529 | 322 #endif |
| 323 #if defined (ONOCR) | |
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324 s.c_oflag &= ~(ONOCR); |
| 529 | 325 #endif |
| 326 #if defined (ONLRET) | |
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327 s.c_oflag &= ~(ONLRET); |
| 529 | 328 #endif |
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329 s.c_cc[VMIN] = wait ? 1 : 0; |
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330 s.c_cc[VTIME] = 0; |
| 529 | 331 } |
| 332 else | |
| 333 { | |
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334 // Restore saved modes. |
| 1358 | 335 |
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336 s = save_term; |
| 529 | 337 } |
| 3658 | 338 |
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339 tcsetattr (tty_fd, wait ? TCSAFLUSH : TCSADRAIN, &s); |
| 529 | 340 } |
| 341 #elif defined (HAVE_TERMIO_H) | |
| 342 { | |
| 343 struct termio s; | |
| 344 static struct termio save_term; | |
| 345 | |
| 346 if (on) | |
| 347 { | |
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348 // Get terminal modes. |
| 529 | 349 |
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350 ioctl (tty_fd, TCGETA, &s); |
| 529 | 351 |
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352 // Save modes and set certain variables dependent on modes. |
| 529 | 353 |
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354 save_term = s; |
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355 // ospeed = s.c_cflag & CBAUD; |
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356 // erase_char = s.c_cc[VERASE]; |
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357 // kill_char = s.c_cc[VKILL]; |
| 529 | 358 |
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359 // Set the modes to the way we want them. |
| 529 | 360 |
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361 s.c_lflag &= ~(ICANON|ECHO|ECHOE|ECHOK|ECHONL); |
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362 s.c_oflag |= (OPOST|ONLCR); |
| 529 | 363 #if defined (OCRNL) |
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364 s.c_oflag &= ~(OCRNL); |
| 529 | 365 #endif |
| 366 #if defined (ONOCR) | |
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367 s.c_oflag &= ~(ONOCR); |
| 529 | 368 #endif |
| 369 #if defined (ONLRET) | |
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370 s.c_oflag &= ~(ONLRET); |
| 529 | 371 #endif |
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372 s.c_cc[VMIN] = wait ? 1 : 0; |
| 529 | 373 } |
| 374 else | |
| 375 { | |
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376 // Restore saved modes. |
| 1358 | 377 |
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378 s = save_term; |
| 529 | 379 } |
| 3658 | 380 |
| 529 | 381 ioctl (tty_fd, TCSETAW, &s); |
| 382 } | |
| 383 #elif defined (HAVE_SGTTY_H) | |
| 384 { | |
| 385 struct sgttyb s; | |
| 386 static struct sgttyb save_term; | |
| 387 | |
| 388 if (on) | |
| 389 { | |
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390 // Get terminal modes. |
| 529 | 391 |
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392 ioctl (tty_fd, TIOCGETP, &s); |
| 529 | 393 |
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394 // Save modes and set certain variables dependent on modes. |
| 529 | 395 |
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396 save_term = s; |
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397 // ospeed = s.sg_ospeed; |
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398 // erase_char = s.sg_erase; |
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399 // kill_char = s.sg_kill; |
| 529 | 400 |
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401 // Set the modes to the way we want them. |
| 529 | 402 |
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403 s.sg_flags |= CBREAK; |
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404 s.sg_flags &= ~(ECHO); |
| 529 | 405 } |
| 406 else | |
| 407 { | |
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408 // Restore saved modes. |
| 1358 | 409 |
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410 s = save_term; |
| 529 | 411 } |
| 3658 | 412 |
| 529 | 413 ioctl (tty_fd, TIOCSETN, &s); |
| 414 } | |
| 415 #else | |
| 4064 | 416 warning ("no support for raw mode console I/O on this system"); |
| 417 | |
| 418 // Make sure the current mode doesn't toggle. | |
| 419 on = curr_on; | |
| 529 | 420 #endif |
| 421 | |
| 422 curr_on = on; | |
| 423 } | |
| 424 | |
| 6726 | 425 FILE * |
| 426 octave_popen (const char *command, const char *mode) | |
| 427 { | |
| 428 #if defined (__MINGW32__) || defined (_MSC_VER) | |
| 429 if (mode && mode[0] && ! mode[1]) | |
| 430 { | |
| 431 char tmode[3]; | |
| 432 tmode[0] = mode[0]; | |
| 433 tmode[1] = 'b'; | |
| 434 tmode[2] = 0; | |
| 435 | |
| 436 return _popen (command, tmode); | |
| 437 } | |
| 438 else | |
| 439 return _popen (command, mode); | |
| 440 #else | |
| 441 return popen (command, mode); | |
| 442 #endif | |
| 443 } | |
| 444 | |
| 445 int | |
| 446 octave_pclose (FILE *f) | |
| 447 { | |
| 448 #if defined (__MINGW32__) || defined (_MSC_VER) | |
| 449 return _pclose (f); | |
| 450 #else | |
| 451 return pclose (f); | |
| 452 #endif | |
| 453 } | |
| 454 | |
| 767 | 455 // Read one character from the terminal. |
| 456 | |
| 529 | 457 int |
| 4067 | 458 octave_kbhit (bool wait) |
| 529 | 459 { |
| 4067 | 460 #ifdef HAVE__KBHIT |
| 4081 | 461 int c = (! wait && ! _kbhit ()) ? 0 : std::cin.get (); |
| 4067 | 462 #else |
| 3658 | 463 raw_mode (true, wait); |
| 464 | |
| 5770 | 465 // Get current handler. |
| 466 octave_interrupt_handler saved_interrupt_handler | |
| 467 = octave_ignore_interrupts (); | |
| 468 | |
| 469 // Restore it, disabling system call restarts (if possible) so the | |
| 470 // read can be interrupted. | |
| 471 | |
| 472 octave_set_interrupt_handler (saved_interrupt_handler, false); | |
| 473 | |
| 3658 | 474 int c = std::cin.get (); |
| 5770 | 475 |
| 3658 | 476 if (std::cin.fail () || std::cin.eof ()) |
| 477 std::cin.clear (); | |
| 478 | |
| 5770 | 479 // Restore it, enabling system call restarts (if possible). |
| 480 octave_set_interrupt_handler (saved_interrupt_handler, true); | |
| 481 | |
| 3658 | 482 raw_mode (false, true); |
| 4067 | 483 #endif |
| 3658 | 484 |
| 529 | 485 return c; |
| 486 } | |
| 487 | |
| 1957 | 488 DEFUN (clc, , , |
| 3332 | 489 "-*- texinfo -*-\n\ |
| 10840 | 490 @deftypefn {Built-in Function} {} clc ()\n\ |
| 3332 | 491 @deftypefnx {Built-in Function} {} home ()\n\ |
| 492 Clear the terminal screen and move the cursor to the upper left corner.\n\ | |
| 3333 | 493 @end deftypefn") |
| 529 | 494 { |
| 2926 | 495 command_editor::clear_screen (); |
| 529 | 496 |
| 2926 | 497 return octave_value_list (); |
| 529 | 498 } |
| 499 | |
| 549 | 500 DEFALIAS (home, clc); |
| 501 | |
| 1957 | 502 DEFUN (getenv, args, , |
| 3301 | 503 "-*- texinfo -*-\n\ |
| 504 @deftypefn {Built-in Function} {} getenv (@var{var})\n\ | |
| 505 Return the value of the environment variable @var{var}. For example,\n\ | |
| 506 \n\ | |
| 507 @example\n\ | |
| 508 getenv (\"PATH\")\n\ | |
| 509 @end example\n\ | |
| 510 \n\ | |
| 511 @noindent\n\ | |
| 512 returns a string containing the value of your path.\n\ | |
| 513 @end deftypefn") | |
| 529 | 514 { |
| 4233 | 515 octave_value retval; |
| 529 | 516 |
| 517 int nargin = args.length (); | |
| 518 | |
| 712 | 519 if (nargin == 1) |
| 529 | 520 { |
| 3523 | 521 std::string name = args(0).string_value (); |
| 636 | 522 |
| 523 if (! error_state) | |
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524 retval = octave_env::getenv (name); |
| 529 | 525 } |
| 526 else | |
| 5823 | 527 print_usage (); |
| 529 | 528 |
| 529 return retval; | |
| 530 } | |
| 531 | |
| 1957 | 532 DEFUN (putenv, args, , |
| 3301 | 533 "-*- texinfo -*-\n\ |
| 10840 | 534 @deftypefn {Built-in Function} {} putenv (@var{var}, @var{value})\n\ |
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535 @deftypefnx {Built-in Function} {} setenv (@var{var}, @var{value})\n\ |
| 3301 | 536 Set the value of the environment variable @var{var} to @var{value}.\n\ |
| 537 @end deftypefn") | |
| 1706 | 538 { |
| 2086 | 539 octave_value_list retval; |
| 1706 | 540 |
| 541 int nargin = args.length (); | |
| 542 | |
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543 if (nargin == 2 || nargin == 1) |
| 1706 | 544 { |
| 3523 | 545 std::string var = args(0).string_value (); |
| 1706 | 546 |
| 547 if (! error_state) | |
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548 { |
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549 std::string val = (nargin == 2 |
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550 ? args(1).string_value () : std::string ()); |
| 1706 | 551 |
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552 if (! error_state) |
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553 octave_env::putenv (var, val); |
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554 else |
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555 error ("putenv: second argument should be a string"); |
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556 } |
| 1706 | 557 else |
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558 error ("putenv: first argument should be a string"); |
| 1706 | 559 } |
| 560 else | |
| 5823 | 561 print_usage (); |
| 1706 | 562 |
| 563 return retval; | |
| 564 } | |
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565 DEFALIAS (setenv, putenv); |
| 1706 | 566 |
| 5775 | 567 // FIXME -- perhaps kbhit should also be able to print a prompt? |
| 3372 | 568 |
| 3657 | 569 DEFUN (kbhit, args, , |
| 3372 | 570 "-*- texinfo -*-\n\ |
| 571 @deftypefn {Built-in Function} {} kbhit ()\n\ | |
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572 Read a single keystroke from the keyboard. If called with one\n\ |
| 3657 | 573 argument, don't wait for a keypress. For example,\n\ |
| 3372 | 574 \n\ |
| 575 @example\n\ | |
| 576 x = kbhit ();\n\ | |
| 577 @end example\n\ | |
| 578 \n\ | |
| 579 @noindent\n\ | |
| 580 will set @var{x} to the next character typed at the keyboard as soon as\n\ | |
| 581 it is typed.\n\ | |
| 3657 | 582 \n\ |
| 583 @example\n\ | |
| 584 x = kbhit (1);\n\ | |
| 585 @end example\n\ | |
| 586 \n\ | |
| 587 @noindent\n\ | |
| 588 identical to the above example, but don't wait for a keypress,\n\ | |
| 589 returning the empty string if no key is available.\n\ | |
| 3372 | 590 @end deftypefn") |
| 529 | 591 { |
| 4233 | 592 octave_value retval; |
| 529 | 593 |
| 5775 | 594 // FIXME -- add timeout and default value args? |
| 529 | 595 |
| 3676 | 596 if (interactive || forced_interactive) |
| 529 | 597 { |
| 6423 | 598 feval ("drawnow"); |
| 599 | |
| 4067 | 600 int c = octave_kbhit (args.length () == 0); |
| 3657 | 601 |
| 3658 | 602 if (c == -1) |
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603 c = 0; |
| 3657 | 604 |
| 529 | 605 char *s = new char [2]; |
| 606 s[0] = c; | |
| 607 s[1] = '\0'; | |
| 608 retval = s; | |
| 609 } | |
| 610 | |
| 611 return retval; | |
| 612 } | |
| 613 | |
| 1957 | 614 DEFUN (pause, args, , |
| 3301 | 615 "-*- texinfo -*-\n\ |
| 616 @deftypefn {Built-in Function} {} pause (@var{seconds})\n\ | |
| 617 Suspend the execution of the program. If invoked without any arguments,\n\ | |
| 618 Octave waits until you type a character. With a numeric argument, it\n\ | |
| 619 pauses for the given number of seconds. For example, the following\n\ | |
| 620 statement prints a message and then waits 5 seconds before clearing the\n\ | |
| 621 screen.\n\ | |
| 622 \n\ | |
| 623 @example\n\ | |
| 624 @group\n\ | |
| 6848 | 625 fprintf (stderr, \"wait please...\\n\");\n\ |
| 3301 | 626 pause (5);\n\ |
| 627 clc;\n\ | |
| 628 @end group\n\ | |
| 629 @end example\n\ | |
| 630 @end deftypefn") | |
| 529 | 631 { |
| 2086 | 632 octave_value_list retval; |
| 529 | 633 |
| 634 int nargin = args.length (); | |
| 635 | |
| 712 | 636 if (! (nargin == 0 || nargin == 1)) |
| 529 | 637 { |
| 5823 | 638 print_usage (); |
| 529 | 639 return retval; |
| 640 } | |
| 641 | |
| 1579 | 642 if (nargin == 1) |
| 529 | 643 { |
| 1579 | 644 double dval = args(0).double_value (); |
| 636 | 645 |
| 1579 | 646 if (! error_state) |
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647 { |
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648 if (! xisnan (dval)) |
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649 { |
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650 feval ("drawnow"); |
| 6419 | 651 |
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652 if (xisinf (dval)) |
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653 { |
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654 flush_octave_stdout (); |
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655 octave_kbhit (); |
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656 } |
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657 else |
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658 octave_sleep (dval); |
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659 } |
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660 else |
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661 warning ("pause: NaN is an invalid delay"); |
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662 } |
| 529 | 663 } |
| 1579 | 664 else |
| 3234 | 665 { |
| 6423 | 666 feval ("drawnow"); |
| 3234 | 667 flush_octave_stdout (); |
| 4067 | 668 octave_kbhit (); |
| 3234 | 669 } |
| 2630 | 670 |
| 671 return retval; | |
| 672 } | |
| 673 | |
| 674 DEFUN (sleep, args, , | |
| 3301 | 675 "-*- texinfo -*-\n\ |
| 676 @deftypefn {Built-in Function} {} sleep (@var{seconds})\n\ | |
| 677 Suspend the execution of the program for the given number of seconds.\n\ | |
| 678 @end deftypefn") | |
| 2630 | 679 { |
| 680 octave_value_list retval; | |
| 681 | |
| 682 if (args.length () == 1) | |
| 1579 | 683 { |
| 2630 | 684 double dval = args(0).double_value (); |
| 685 | |
| 686 if (! error_state) | |
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687 { |
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688 if (xisnan (dval)) |
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689 warning ("sleep: NaN is an invalid delay"); |
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690 else |
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691 { |
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692 feval ("drawnow"); |
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693 octave_sleep (dval); |
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694 } |
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695 } |
| 1579 | 696 } |
| 2630 | 697 else |
| 5823 | 698 print_usage (); |
| 2630 | 699 |
| 700 return retval; | |
| 701 } | |
| 702 | |
| 703 DEFUN (usleep, args, , | |
| 3301 | 704 "-*- texinfo -*-\n\ |
| 705 @deftypefn {Built-in Function} {} usleep (@var{microseconds})\n\ | |
| 706 Suspend the execution of the program for the given number of\n\ | |
| 707 microseconds. On systems where it is not possible to sleep for periods\n\ | |
| 708 of time less than one second, @code{usleep} will pause the execution for\n\ | |
| 709 @code{round (@var{microseconds} / 1e6)} seconds.\n\ | |
| 710 @end deftypefn") | |
| 2630 | 711 { |
| 712 octave_value_list retval; | |
| 713 | |
| 714 if (args.length () == 1) | |
| 715 { | |
| 716 double dval = args(0).double_value (); | |
| 717 | |
| 718 if (! error_state) | |
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719 { |
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720 if (xisnan (dval)) |
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721 warning ("usleep: NaN is an invalid delay"); |
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722 else |
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723 { |
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724 feval ("drawnow"); |
| 6423 | 725 |
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726 int delay = NINT (dval); |
| 2631 | 727 |
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728 if (delay > 0) |
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729 octave_usleep (delay); |
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730 } |
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731 } |
| 2630 | 732 } |
| 733 else | |
| 5823 | 734 print_usage (); |
| 529 | 735 |
| 736 return retval; | |
| 737 } | |
| 738 | |
| 5775 | 739 // FIXME -- maybe this should only return 1 if IEEE floating |
| 862 | 740 // point functions really work. |
| 741 | |
| 1957 | 742 DEFUN (isieee, , , |
| 3301 | 743 "-*- texinfo -*-\n\ |
| 744 @deftypefn {Built-in Function} {} isieee ()\n\ | |
| 745 Return 1 if your computer claims to conform to the IEEE standard for\n\ | |
| 746 floating point calculations.\n\ | |
| 747 @end deftypefn") | |
| 862 | 748 { |
| 4600 | 749 oct_mach_info::float_format flt_fmt = oct_mach_info::native_float_format (); |
| 2317 | 750 |
| 4574 | 751 return octave_value (flt_fmt == oct_mach_info::flt_fmt_ieee_little_endian |
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752 || flt_fmt == oct_mach_info::flt_fmt_ieee_big_endian); |
| 862 | 753 } |
| 754 | |
| 4600 | 755 DEFUN (native_float_format, , , |
| 756 "-*- texinfo -*-\n\ | |
| 757 @deftypefn {Built-in Function} {} native_float_format ()\n\ | |
| 758 Return the native floating point format as a string\n\ | |
| 759 @end deftypefn") | |
| 760 { | |
| 761 oct_mach_info::float_format flt_fmt = oct_mach_info::native_float_format (); | |
| 762 | |
| 763 return octave_value (oct_mach_info::float_format_as_string (flt_fmt)); | |
| 764 } | |
| 765 | |
| 1957 | 766 DEFUN (tilde_expand, args, , |
| 3301 | 767 "-*- texinfo -*-\n\ |
| 768 @deftypefn {Built-in Function} {} tilde_expand (@var{string})\n\ | |
| 769 Performs tilde expansion on @var{string}. If @var{string} begins with a\n\ | |
| 770 tilde character, (@samp{~}), all of the characters preceding the first\n\ | |
| 771 slash (or all characters, if there is no slash) are treated as a\n\ | |
| 772 possible user name, and the tilde and the following characters up to the\n\ | |
| 773 slash are replaced by the home directory of the named user. If the\n\ | |
| 774 tilde is followed immediately by a slash, the tilde is replaced by the\n\ | |
| 10840 | 775 home directory of the user running Octave. For example:\n\ |
| 3301 | 776 \n\ |
| 777 @example\n\ | |
| 778 @group\n\ | |
| 779 tilde_expand (\"~joeuser/bin\")\n\ | |
| 780 @result{} \"/home/joeuser/bin\"\n\ | |
| 781 tilde_expand (\"~/bin\")\n\ | |
| 782 @result{} \"/home/jwe/bin\"\n\ | |
| 783 @end group\n\ | |
| 784 @end example\n\ | |
| 785 @end deftypefn") | |
| 1750 | 786 { |
| 4233 | 787 octave_value retval; |
| 1750 | 788 |
| 789 int nargin = args.length (); | |
| 790 | |
| 791 if (nargin == 1) | |
| 6116 | 792 { |
| 793 octave_value arg = args(0); | |
| 794 | |
| 795 string_vector sv = arg.all_strings (); | |
| 796 | |
| 797 if (! error_state) | |
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798 { |
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799 sv = file_ops::tilde_expand (sv); |
| 6116 | 800 |
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801 if (arg.is_cellstr ()) |
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802 retval = Cell (arg.dims (), sv); |
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803 else |
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804 retval = sv; |
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805 } |
| 6116 | 806 else |
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807 error ("tilde_expand: expecting argument to be char or cellstr object"); |
| 6116 | 808 } |
| 1750 | 809 else |
| 5823 | 810 print_usage (); |
| 1750 | 811 |
| 812 return retval; | |
| 813 } |