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1
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1 /* |
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2 |
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2847
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3 Copyright (C) 1996, 1997 John W. Eaton |
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4 |
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5 This file is part of Octave. |
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6 |
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7 Octave is free software; you can redistribute it and/or modify it |
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8 under the terms of the GNU General Public License as published by the |
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9 Free Software Foundation; either version 2, or (at your option) any |
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10 later version. |
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11 |
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12 Octave is distributed in the hope that it will be useful, but WITHOUT |
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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15 for more details. |
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16 |
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17 You should have received a copy of the GNU General Public License |
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18 along with Octave; see the file COPYING. If not, write to the Free |
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5307
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19 Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
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20 02110-1301, USA. |
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21 |
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22 */ |
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23 |
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240
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24 #ifdef HAVE_CONFIG_H |
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1192
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25 #include <config.h> |
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1
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26 #endif |
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27 |
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1346
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28 #include <cfloat> |
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3124
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29 #include <cmath> |
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1343
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30 #include <cstddef> |
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1346
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31 #include <cstdio> |
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1343
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32 #include <cstdlib> |
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33 #include <cstring> |
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34 |
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3503
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35 #include <iostream> |
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1728
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36 #include <string> |
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37 |
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1350
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38 #ifdef HAVE_UNISTD_H |
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2442
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39 #ifdef HAVE_SYS_TYPES_H |
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529
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40 #include <sys/types.h> |
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2442
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41 #endif |
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529
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42 #include <unistd.h> |
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43 #endif |
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1
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44 |
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1430
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45 #if defined (HAVE_TERMIOS_H) |
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46 #include <termios.h> |
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47 #elif defined (HAVE_TERMIO_H) |
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48 #include <termio.h> |
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49 #elif defined (HAVE_SGTTY_H) |
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50 #include <sgtty.h> |
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4067
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51 #endif |
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52 |
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53 #if defined (HAVE_CONIO_H) |
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54 #include <conio.h> |
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1430
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55 #endif |
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56 |
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3248
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57 #if defined (HAVE_SYS_IOCTL_H) |
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58 #include <sys/ioctl.h> |
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59 #endif |
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60 |
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1463
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61 #if defined (HAVE_FLOATINGPOINT_H) |
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62 #include <floatingpoint.h> |
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63 #endif |
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64 |
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2508
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65 #if defined (HAVE_IEEEFP_H) |
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66 #include <ieeefp.h> |
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67 #endif |
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68 |
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1463
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69 #if !defined (HAVE_GETHOSTNAME) && defined (HAVE_SYS_UTSNAME_H) |
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70 #include <sys/utsname.h> |
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71 #endif |
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72 |
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2926
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73 #include "cmd-edit.h" |
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74 #include "file-ops.h" |
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2893
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75 #include "lo-mappers.h" |
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2317
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76 #include "mach-info.h" |
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2926
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77 #include "oct-env.h" |
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5451
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78 #include "quit.h" |
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1769
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79 |
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1352
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80 #include "defun.h" |
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81 #include "error.h" |
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529
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82 #include "input.h" |
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1755
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83 #include "oct-obj.h" |
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2370
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84 #include "ov.h" |
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3234
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85 #include "pager.h" |
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5770
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86 #include "sighandlers.h" |
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1352
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87 #include "sysdep.h" |
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1755
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88 #include "toplev.h" |
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529
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89 #include "utils.h" |
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90 |
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91 #ifndef STDIN_FILENO |
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92 #define STDIN_FILENO 1 |
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93 #endif |
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444
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94 |
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2508
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95 #if defined (__386BSD__) || defined (__FreeBSD__) |
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96 static void |
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97 BSD_init (void) |
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98 { |
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99 #if defined (HAVE_FLOATINGPOINT_H) |
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100 // Disable trapping on common exceptions. |
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4164
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101 #ifndef FP_X_DNML |
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102 #define FP_X_DNML 0 |
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103 #endif |
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2508
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104 fpsetmask (~(FP_X_OFL|FP_X_INV|FP_X_DZ|FP_X_DNML|FP_X_UFL|FP_X_IMP)); |
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105 #endif |
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106 } |
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107 #endif |
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108 |
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6080
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109 static void |
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110 w32_set_octave_home (void) |
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111 { |
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112 #if defined (__WIN32__) && ! defined (_POSIX_VERSION) |
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113 int n = 1024; |
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114 |
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6086
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115 std::string bin_dir (n, '\0'); |
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116 |
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117 while (true) |
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118 { |
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119 int status = GetModuleFileName (0, &bin_dir[0], n); |
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120 |
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121 if (status < n) |
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122 { |
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123 bin_dir.resize (status); |
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124 break; |
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125 } |
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126 else |
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127 { |
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128 n *= 2; |
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129 bin_dir.resize (n); |
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130 } |
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131 } |
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132 |
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133 if (! bin_dir.empty ()) |
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134 { |
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135 size_t pos = bin_dir.rfind ("\\bin\\"); |
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136 |
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137 if (pos != NPOS) |
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138 octave_env::putenv ("OCTAVE_HOME", bin_dir.substr (0, pos)); |
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139 } |
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140 #endif |
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141 } |
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142 |
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5451
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143 void |
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144 w32_set_quiet_shutdown (void) |
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145 { |
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146 #if defined (__WIN32__) && ! defined (_POSIX_VERSION) |
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147 // Let the user close the console window or shutdown without the |
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148 // pesky dialog. |
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149 // |
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5775
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150 // FIXME -- should this be user configurable? |
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151 SetProcessShutdownParameters (0x280, SHUTDOWN_NORETRY); |
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152 #endif |
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153 } |
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154 |
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155 #if defined (__WIN32__) && ! defined (_POSIX_VERSION) |
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156 void |
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157 MINGW_signal_cleanup (void) |
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158 { |
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5455
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159 w32_set_quiet_shutdown (); |
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160 |
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5455
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161 w32_raise_final (); |
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5451
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162 } |
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163 #endif |
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164 |
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165 #if defined (__MINGW32__) |
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166 static void |
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167 MINGW_init (void) |
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168 { |
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6080
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169 w32_set_octave_home (); |
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170 |
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5451
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171 // Init mutex to protect setjmp/longjmp and get main thread context |
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172 w32_sigint_init (); |
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173 |
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174 w32_set_quiet_shutdown (); |
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175 } |
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176 #endif |
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177 |
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6080
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178 #if defined (_MSC_VER) |
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179 static void |
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180 MSVC_init (void) |
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181 { |
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182 w32_set_octave_home (); |
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6135
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183 |
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184 // Init mutex to protect setjmp/longjmp and get main thread context |
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185 w32_sigint_init (); |
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186 |
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187 w32_set_quiet_shutdown (); |
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6080
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188 } |
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189 #endif |
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190 |
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4091
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191 #if defined (__CYGWIN__) |
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192 |
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193 #include <limits.h> |
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194 #include <sys/cygwin.h> |
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195 |
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196 static void |
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197 CYGWIN_init (void) |
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198 { |
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4470
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199 // Make sure TMPDIR contains an absolute windows path. Use '/' |
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200 // rather than '\\' so that sh expansion won't mess file names. |
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201 |
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4091
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202 std::string tmpdir = octave_env::getenv ("TMPDIR"); |
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203 |
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204 if (tmpdir.empty ()) |
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4470
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205 tmpdir = "/tmp"; |
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206 |
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207 char buf [PATH_MAX]; |
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4091
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208 |
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4470
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209 if (cygwin32_conv_to_full_win32_path (tmpdir.c_str (), buf) < 0) |
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210 panic ("CYGWIN_init: unable to convert TMPDIR (= \"%s\") to Windows directory name", |
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211 tmpdir.c_str ()); |
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212 else |
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213 { |
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214 tmpdir = buf; |
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4091
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215 |
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4470
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216 for (size_t i = 0; i < tmpdir.length (); i++) |
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217 if (tmpdir[i] == '\\') |
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218 tmpdir[i] = '/'; |
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4091
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219 } |
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4470
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220 |
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221 octave_env::putenv ("TMPDIR", tmpdir); |
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4091
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222 } |
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223 #endif |
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224 |
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4284
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225 #if defined (__DECCXX) |
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226 |
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227 // These don't seem to be instantiated automatically... |
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228 |
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229 template std::istream& |
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230 std::operator >> (std::istream&, std::complex<double>&); |
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231 |
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232 template std::string& |
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233 std::string::append (const std::string&, size_t, size_t); |
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234 |
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235 #endif |
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236 |
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2610
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237 #if defined (NeXT) |
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1
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238 extern "C" |
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239 { |
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240 typedef void (*_cplus_fcn_int) (int); |
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241 extern void (*malloc_error (_cplus_fcn_int)) (int); |
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242 } |
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243 |
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244 static void |
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245 malloc_handler (int code) |
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246 { |
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247 if (code == 5) |
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217
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248 warning ("hopefully recoverable malloc error: freeing wild pointer"); |
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1
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249 else |
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2926
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250 panic ("probably irrecoverable malloc error: code %d", code); |
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1
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251 } |
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252 |
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253 static void |
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254 NeXT_init (void) |
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255 { |
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256 malloc_error (malloc_handler); |
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257 } |
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3333
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258 #endif |
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1
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259 |
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2546
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260 #if defined (__EMX__) |
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261 OS2_init (void) |
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262 { |
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263 _control87 ((EM_INVALID | EM_DENORMAL | EM_ZERODIVIDE | EM_OVERFLOW |
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264 | EM_UNDERFLOW | EM_INEXACT), MCW_EM); |
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265 } |
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266 #endif |
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267 |
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2508
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268 #if defined (SCO) |
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269 static void |
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270 SCO_init (void) |
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271 { |
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272 #if defined (HAVE_IEEEFP_H) |
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273 // Disable trapping on common exceptions. |
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274 fpsetmask (~(FP_X_OFL|FP_X_INV|FP_X_DZ|FP_X_DNML|FP_X_UFL|FP_X_IMP)); |
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275 #endif |
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276 } |
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277 #endif |
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278 |
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1
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279 void |
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280 sysdep_init (void) |
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281 { |
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959
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282 #if defined (__386BSD__) || defined (__FreeBSD__) |
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2508
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283 BSD_init (); |
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4091
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284 #elif defined (__CYGWIN__) |
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285 CYGWIN_init (); |
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5451
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286 #elif defined (__MINGW32__) |
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287 MINGW_init (); |
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6080
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288 #elif defined (_MSC_VER) |
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289 MSVC_init (); |
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2610
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290 #elif defined (NeXT) |
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1
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291 NeXT_init (); |
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2610
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292 #elif defined (__EMX__) |
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2546
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293 OS2_init (); |
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2508
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294 #elif defined (SCO) |
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295 SCO_init (); |
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1
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296 #endif |
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444
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297 |
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298 octave_ieee_init (); |
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1
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299 } |
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300 |
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5451
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301 void |
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302 sysdep_cleanup (void) |
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303 { |
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304 MINGW_SIGNAL_CLEANUP (); |
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305 } |
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306 |
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767
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307 // Set terminal in raw mode. From less-177. |
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308 // |
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309 // Change terminal to "raw mode", or restore to "normal" mode. |
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310 // "Raw mode" means |
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311 // 1. An outstanding read will complete on receipt of a single keystroke. |
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312 // 2. Input is not echoed. |
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313 // 3. On output, \n is mapped to \r\n. |
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314 // 4. \t is NOT expanded into spaces. |
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315 // 5. Signal-causing characters such as ctrl-C (interrupt), |
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316 // etc. are NOT disabled. |
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317 // It doesn't matter whether an input \n is mapped to \r, or vice versa. |
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318 |
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529
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319 void |
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3657
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320 raw_mode (bool on, bool wait) |
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529
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321 { |
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3657
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322 static bool curr_on = false; |
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529
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323 |
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324 int tty_fd = STDIN_FILENO; |
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325 if (! isatty (tty_fd)) |
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326 { |
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327 if (interactive) |
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328 error ("stdin is not a tty!"); |
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329 return; |
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330 } |
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331 |
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332 if (on == curr_on) |
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333 return; |
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334 |
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335 #if defined (HAVE_TERMIOS_H) |
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336 { |
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337 struct termios s; |
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338 static struct termios save_term; |
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339 |
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340 if (on) |
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341 { |
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1358
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342 // Get terminal modes. |
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529
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343 |
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344 tcgetattr (tty_fd, &s); |
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345 |
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1358
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346 // Save modes and set certain variables dependent on modes. |
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529
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347 |
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348 save_term = s; |
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349 // ospeed = s.c_cflag & CBAUD; |
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350 // erase_char = s.c_cc[VERASE]; |
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351 // kill_char = s.c_cc[VKILL]; |
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352 |
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1358
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353 // Set the modes to the way we want them. |
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529
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354 |
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355 s.c_lflag &= ~(ICANON|ECHO|ECHOE|ECHOK|ECHONL); |
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356 s.c_oflag |= (OPOST|ONLCR); |
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357 #if defined (OCRNL) |
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358 s.c_oflag &= ~(OCRNL); |
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359 #endif |
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360 #if defined (ONOCR) |
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361 s.c_oflag &= ~(ONOCR); |
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362 #endif |
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363 #if defined (ONLRET) |
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364 s.c_oflag &= ~(ONLRET); |
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365 #endif |
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3658
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366 s.c_cc[VMIN] = wait ? 1 : 0; |
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529
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367 s.c_cc[VTIME] = 0; |
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368 } |
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369 else |
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370 { |
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1358
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371 // Restore saved modes. |
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372 |
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529
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373 s = save_term; |
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374 } |
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3658
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375 |
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529
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376 tcsetattr (tty_fd, TCSAFLUSH, &s); |
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377 } |
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378 #elif defined (HAVE_TERMIO_H) |
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379 { |
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380 struct termio s; |
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381 static struct termio save_term; |
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382 |
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383 if (on) |
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384 { |
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1358
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385 // Get terminal modes. |
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529
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386 |
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387 ioctl (tty_fd, TCGETA, &s); |
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388 |
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1358
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389 // Save modes and set certain variables dependent on modes. |
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529
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390 |
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391 save_term = s; |
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392 // ospeed = s.c_cflag & CBAUD; |
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393 // erase_char = s.c_cc[VERASE]; |
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394 // kill_char = s.c_cc[VKILL]; |
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395 |
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1358
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396 // Set the modes to the way we want them. |
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529
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397 |
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398 s.c_lflag &= ~(ICANON|ECHO|ECHOE|ECHOK|ECHONL); |
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399 s.c_oflag |= (OPOST|ONLCR); |
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400 #if defined (OCRNL) |
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401 s.c_oflag &= ~(OCRNL); |
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402 #endif |
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403 #if defined (ONOCR) |
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404 s.c_oflag &= ~(ONOCR); |
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405 #endif |
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406 #if defined (ONLRET) |
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407 s.c_oflag &= ~(ONLRET); |
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408 #endif |
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3658
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409 s.c_cc[VMIN] = wait ? 1 : 0; |
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529
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410 } |
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411 else |
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412 { |
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1358
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413 // Restore saved modes. |
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414 |
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529
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415 s = save_term; |
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416 } |
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3658
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417 |
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529
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418 ioctl (tty_fd, TCSETAW, &s); |
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419 } |
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420 #elif defined (HAVE_SGTTY_H) |
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421 { |
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422 struct sgttyb s; |
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423 static struct sgttyb save_term; |
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424 |
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425 if (on) |
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426 { |
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1358
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427 // Get terminal modes. |
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529
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428 |
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429 ioctl (tty_fd, TIOCGETP, &s); |
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430 |
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1358
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431 // Save modes and set certain variables dependent on modes. |
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529
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432 |
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433 save_term = s; |
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434 // ospeed = s.sg_ospeed; |
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435 // erase_char = s.sg_erase; |
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436 // kill_char = s.sg_kill; |
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437 |
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1358
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438 // Set the modes to the way we want them. |
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529
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439 |
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440 s.sg_flags |= CBREAK; |
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441 s.sg_flags &= ~(ECHO); |
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442 } |
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443 else |
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444 { |
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1358
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445 // Restore saved modes. |
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446 |
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529
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447 s = save_term; |
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448 } |
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3658
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449 |
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529
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450 ioctl (tty_fd, TIOCSETN, &s); |
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451 } |
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452 #else |
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4064
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453 warning ("no support for raw mode console I/O on this system"); |
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454 |
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455 // Make sure the current mode doesn't toggle. |
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456 on = curr_on; |
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529
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457 #endif |
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458 |
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459 curr_on = on; |
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460 } |
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461 |
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767
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462 // Read one character from the terminal. |
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463 |
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529
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464 int |
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4067
|
465 octave_kbhit (bool wait) |
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529
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466 { |
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4067
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467 #ifdef HAVE__KBHIT |
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4081
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468 int c = (! wait && ! _kbhit ()) ? 0 : std::cin.get (); |
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4067
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469 #else |
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3658
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470 raw_mode (true, wait); |
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471 |
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5770
|
472 // Get current handler. |
|
|
473 octave_interrupt_handler saved_interrupt_handler |
|
|
474 = octave_ignore_interrupts (); |
|
|
475 |
|
|
476 // Restore it, disabling system call restarts (if possible) so the |
|
|
477 // read can be interrupted. |
|
|
478 |
|
|
479 octave_set_interrupt_handler (saved_interrupt_handler, false); |
|
|
480 |
|
3658
|
481 int c = std::cin.get (); |
|
5770
|
482 |
|
3658
|
483 if (std::cin.fail () || std::cin.eof ()) |
|
|
484 std::cin.clear (); |
|
|
485 |
|
5770
|
486 // Restore it, enabling system call restarts (if possible). |
|
|
487 octave_set_interrupt_handler (saved_interrupt_handler, true); |
|
|
488 |
|
3658
|
489 raw_mode (false, true); |
|
4067
|
490 #endif |
|
3658
|
491 |
|
529
|
492 return c; |
|
|
493 } |
|
|
494 |
|
1957
|
495 DEFUN (clc, , , |
|
3332
|
496 "-*- texinfo -*-\n\ |
|
|
497 @deftypefn {Built-in Function} {} clc ()\n\ |
|
|
498 @deftypefnx {Built-in Function} {} home ()\n\ |
|
|
499 Clear the terminal screen and move the cursor to the upper left corner.\n\ |
|
3333
|
500 @end deftypefn") |
|
529
|
501 { |
|
2926
|
502 command_editor::clear_screen (); |
|
529
|
503 |
|
2926
|
504 return octave_value_list (); |
|
529
|
505 } |
|
|
506 |
|
549
|
507 DEFALIAS (home, clc); |
|
|
508 |
|
1957
|
509 DEFUN (getenv, args, , |
|
3301
|
510 "-*- texinfo -*-\n\ |
|
|
511 @deftypefn {Built-in Function} {} getenv (@var{var})\n\ |
|
|
512 Return the value of the environment variable @var{var}. For example,\n\ |
|
|
513 \n\ |
|
|
514 @example\n\ |
|
|
515 getenv (\"PATH\")\n\ |
|
|
516 @end example\n\ |
|
|
517 \n\ |
|
|
518 @noindent\n\ |
|
|
519 returns a string containing the value of your path.\n\ |
|
|
520 @end deftypefn") |
|
529
|
521 { |
|
4233
|
522 octave_value retval; |
|
529
|
523 |
|
|
524 int nargin = args.length (); |
|
|
525 |
|
712
|
526 if (nargin == 1) |
|
529
|
527 { |
|
3523
|
528 std::string name = args(0).string_value (); |
|
636
|
529 |
|
|
530 if (! error_state) |
|
2926
|
531 retval = octave_env::getenv (name); |
|
529
|
532 } |
|
|
533 else |
|
5823
|
534 print_usage (); |
|
529
|
535 |
|
|
536 return retval; |
|
|
537 } |
|
|
538 |
|
1957
|
539 DEFUN (putenv, args, , |
|
3301
|
540 "-*- texinfo -*-\n\ |
|
|
541 @deftypefn {Built-in Function} {} putenv (@var{var}, @var{value})\n\ |
|
|
542 Set the value of the environment variable @var{var} to @var{value}.\n\ |
|
|
543 @end deftypefn") |
|
1706
|
544 { |
|
2086
|
545 octave_value_list retval; |
|
1706
|
546 |
|
|
547 int nargin = args.length (); |
|
|
548 |
|
|
549 if (nargin == 2) |
|
|
550 { |
|
3523
|
551 std::string var = args(0).string_value (); |
|
1706
|
552 |
|
|
553 if (! error_state) |
|
|
554 { |
|
3523
|
555 std::string val = args(1).string_value (); |
|
1706
|
556 |
|
|
557 if (! error_state) |
|
2926
|
558 octave_env::putenv (var, val); |
|
1706
|
559 else |
|
|
560 error ("putenv: second argument should be a string"); |
|
|
561 } |
|
|
562 else |
|
|
563 error ("putenv: first argument should be a string"); |
|
|
564 } |
|
|
565 else |
|
5823
|
566 print_usage (); |
|
1706
|
567 |
|
|
568 return retval; |
|
|
569 } |
|
|
570 |
|
5775
|
571 // FIXME -- perhaps kbhit should also be able to print a prompt? |
|
3372
|
572 |
|
3657
|
573 DEFUN (kbhit, args, , |
|
3372
|
574 "-*- texinfo -*-\n\ |
|
|
575 @deftypefn {Built-in Function} {} kbhit ()\n\ |
|
3657
|
576 Read a single keystroke from the keyboard. If called with one\n\ |
|
|
577 argument, don't wait for a keypress. For example,\n\ |
|
3372
|
578 \n\ |
|
|
579 @example\n\ |
|
|
580 x = kbhit ();\n\ |
|
|
581 @end example\n\ |
|
|
582 \n\ |
|
|
583 @noindent\n\ |
|
|
584 will set @var{x} to the next character typed at the keyboard as soon as\n\ |
|
|
585 it is typed.\n\ |
|
3657
|
586 \n\ |
|
|
587 @example\n\ |
|
|
588 x = kbhit (1);\n\ |
|
|
589 @end example\n\ |
|
|
590 \n\ |
|
|
591 @noindent\n\ |
|
|
592 identical to the above example, but don't wait for a keypress,\n\ |
|
|
593 returning the empty string if no key is available.\n\ |
|
3372
|
594 @end deftypefn") |
|
529
|
595 { |
|
4233
|
596 octave_value retval; |
|
529
|
597 |
|
5775
|
598 // FIXME -- add timeout and default value args? |
|
529
|
599 |
|
3676
|
600 if (interactive || forced_interactive) |
|
529
|
601 { |
|
4067
|
602 int c = octave_kbhit (args.length () == 0); |
|
3657
|
603 |
|
3658
|
604 if (c == -1) |
|
|
605 c = 0; |
|
3657
|
606 |
|
529
|
607 char *s = new char [2]; |
|
|
608 s[0] = c; |
|
|
609 s[1] = '\0'; |
|
|
610 retval = s; |
|
|
611 } |
|
|
612 |
|
|
613 return retval; |
|
|
614 } |
|
|
615 |
|
1957
|
616 DEFUN (pause, args, , |
|
3301
|
617 "-*- texinfo -*-\n\ |
|
|
618 @deftypefn {Built-in Function} {} pause (@var{seconds})\n\ |
|
|
619 Suspend the execution of the program. If invoked without any arguments,\n\ |
|
|
620 Octave waits until you type a character. With a numeric argument, it\n\ |
|
|
621 pauses for the given number of seconds. For example, the following\n\ |
|
|
622 statement prints a message and then waits 5 seconds before clearing the\n\ |
|
|
623 screen.\n\ |
|
|
624 \n\ |
|
|
625 @example\n\ |
|
|
626 @group\n\ |
|
|
627 fprintf (stderr, \"wait please...\n\");\n\ |
|
|
628 pause (5);\n\ |
|
|
629 clc;\n\ |
|
|
630 @end group\n\ |
|
|
631 @end example\n\ |
|
|
632 @end deftypefn") |
|
529
|
633 { |
|
2086
|
634 octave_value_list retval; |
|
529
|
635 |
|
|
636 int nargin = args.length (); |
|
|
637 |
|
712
|
638 if (! (nargin == 0 || nargin == 1)) |
|
529
|
639 { |
|
5823
|
640 print_usage (); |
|
529
|
641 return retval; |
|
|
642 } |
|
|
643 |
|
1579
|
644 if (nargin == 1) |
|
529
|
645 { |
|
1579
|
646 double dval = args(0).double_value (); |
|
636
|
647 |
|
1579
|
648 if (! error_state) |
|
|
649 { |
|
|
650 if (xisnan (dval)) |
|
|
651 warning ("pause: NaN is an invalid delay"); |
|
2630
|
652 else if (xisinf (dval)) |
|
3234
|
653 { |
|
|
654 flush_octave_stdout (); |
|
4067
|
655 octave_kbhit (); |
|
3234
|
656 } |
|
1579
|
657 else |
|
4086
|
658 octave_sleep (dval); |
|
529
|
659 } |
|
|
660 } |
|
1579
|
661 else |
|
3234
|
662 { |
|
|
663 flush_octave_stdout (); |
|
4067
|
664 octave_kbhit (); |
|
3234
|
665 } |
|
2630
|
666 |
|
|
667 return retval; |
|
|
668 } |
|
|
669 |
|
|
670 DEFUN (sleep, args, , |
|
3301
|
671 "-*- texinfo -*-\n\ |
|
|
672 @deftypefn {Built-in Function} {} sleep (@var{seconds})\n\ |
|
|
673 Suspend the execution of the program for the given number of seconds.\n\ |
|
|
674 @end deftypefn") |
|
2630
|
675 { |
|
|
676 octave_value_list retval; |
|
|
677 |
|
|
678 if (args.length () == 1) |
|
1579
|
679 { |
|
2630
|
680 double dval = args(0).double_value (); |
|
|
681 |
|
|
682 if (! error_state) |
|
|
683 { |
|
|
684 if (xisnan (dval)) |
|
|
685 warning ("sleep: NaN is an invalid delay"); |
|
|
686 else |
|
4086
|
687 octave_sleep (dval); |
|
2630
|
688 } |
|
1579
|
689 } |
|
2630
|
690 else |
|
5823
|
691 print_usage (); |
|
2630
|
692 |
|
|
693 return retval; |
|
|
694 } |
|
|
695 |
|
|
696 DEFUN (usleep, args, , |
|
3301
|
697 "-*- texinfo -*-\n\ |
|
|
698 @deftypefn {Built-in Function} {} usleep (@var{microseconds})\n\ |
|
|
699 Suspend the execution of the program for the given number of\n\ |
|
|
700 microseconds. On systems where it is not possible to sleep for periods\n\ |
|
|
701 of time less than one second, @code{usleep} will pause the execution for\n\ |
|
|
702 @code{round (@var{microseconds} / 1e6)} seconds.\n\ |
|
|
703 @end deftypefn") |
|
2630
|
704 { |
|
|
705 octave_value_list retval; |
|
|
706 |
|
|
707 if (args.length () == 1) |
|
|
708 { |
|
|
709 double dval = args(0).double_value (); |
|
|
710 |
|
|
711 if (! error_state) |
|
|
712 { |
|
|
713 if (xisnan (dval)) |
|
|
714 warning ("usleep: NaN is an invalid delay"); |
|
|
715 else |
|
|
716 { |
|
|
717 int delay = NINT (dval); |
|
2631
|
718 |
|
2630
|
719 if (delay > 0) |
|
3308
|
720 octave_usleep (delay); |
|
2630
|
721 } |
|
|
722 } |
|
|
723 } |
|
|
724 else |
|
5823
|
725 print_usage (); |
|
529
|
726 |
|
|
727 return retval; |
|
|
728 } |
|
|
729 |
|
5775
|
730 // FIXME -- maybe this should only return 1 if IEEE floating |
|
862
|
731 // point functions really work. |
|
|
732 |
|
1957
|
733 DEFUN (isieee, , , |
|
3301
|
734 "-*- texinfo -*-\n\ |
|
|
735 @deftypefn {Built-in Function} {} isieee ()\n\ |
|
|
736 Return 1 if your computer claims to conform to the IEEE standard for\n\ |
|
|
737 floating point calculations.\n\ |
|
|
738 @end deftypefn") |
|
862
|
739 { |
|
4600
|
740 oct_mach_info::float_format flt_fmt = oct_mach_info::native_float_format (); |
|
2317
|
741 |
|
4574
|
742 return octave_value (flt_fmt == oct_mach_info::flt_fmt_ieee_little_endian |
|
|
743 || flt_fmt == oct_mach_info::flt_fmt_ieee_big_endian); |
|
862
|
744 } |
|
|
745 |
|
4600
|
746 DEFUN (native_float_format, , , |
|
|
747 "-*- texinfo -*-\n\ |
|
|
748 @deftypefn {Built-in Function} {} native_float_format ()\n\ |
|
|
749 Return the native floating point format as a string\n\ |
|
|
750 @end deftypefn") |
|
|
751 { |
|
|
752 oct_mach_info::float_format flt_fmt = oct_mach_info::native_float_format (); |
|
|
753 |
|
|
754 return octave_value (oct_mach_info::float_format_as_string (flt_fmt)); |
|
|
755 } |
|
|
756 |
|
1957
|
757 DEFUN (tilde_expand, args, , |
|
3301
|
758 "-*- texinfo -*-\n\ |
|
|
759 @deftypefn {Built-in Function} {} tilde_expand (@var{string})\n\ |
|
|
760 Performs tilde expansion on @var{string}. If @var{string} begins with a\n\ |
|
|
761 tilde character, (@samp{~}), all of the characters preceding the first\n\ |
|
|
762 slash (or all characters, if there is no slash) are treated as a\n\ |
|
|
763 possible user name, and the tilde and the following characters up to the\n\ |
|
|
764 slash are replaced by the home directory of the named user. If the\n\ |
|
|
765 tilde is followed immediately by a slash, the tilde is replaced by the\n\ |
|
|
766 home directory of the user running Octave. For example,\n\ |
|
|
767 \n\ |
|
|
768 @example\n\ |
|
|
769 @group\n\ |
|
|
770 tilde_expand (\"~joeuser/bin\")\n\ |
|
|
771 @result{} \"/home/joeuser/bin\"\n\ |
|
|
772 tilde_expand (\"~/bin\")\n\ |
|
|
773 @result{} \"/home/jwe/bin\"\n\ |
|
|
774 @end group\n\ |
|
|
775 @end example\n\ |
|
|
776 @end deftypefn") |
|
1750
|
777 { |
|
4233
|
778 octave_value retval; |
|
1750
|
779 |
|
|
780 int nargin = args.length (); |
|
|
781 |
|
|
782 if (nargin == 1) |
|
6116
|
783 { |
|
|
784 octave_value arg = args(0); |
|
|
785 |
|
|
786 string_vector sv = arg.all_strings (); |
|
|
787 |
|
|
788 if (! error_state) |
|
|
789 { |
|
|
790 sv = file_ops::tilde_expand (sv); |
|
|
791 |
|
|
792 if (arg.is_cellstr ()) |
|
|
793 retval = Cell (arg.dims (), sv); |
|
|
794 else |
|
|
795 retval = sv; |
|
|
796 } |
|
|
797 else |
|
|
798 error ("tilde_expand: expecting argument to be char or cellstr object"); |
|
|
799 } |
|
1750
|
800 else |
|
5823
|
801 print_usage (); |
|
1750
|
802 |
|
|
803 return retval; |
|
|
804 } |
|
|
805 |
|
2552
|
806 #if defined (__EMX__) && defined (OS2) |
|
|
807 |
|
4208
|
808 DEFCMD (extproc, , , |
|
2926
|
809 "extproc: ignored by Octave") |
|
2552
|
810 { |
|
|
811 return octave_value_list (); |
|
|
812 } |
|
|
813 |
|
|
814 DEFALIAS (EXTPROC, extproc); |
|
|
815 |
|
|
816 #endif |
|
|
817 |
|
529
|
818 /* |
|
1
|
819 ;;; Local Variables: *** |
|
|
820 ;;; mode: C++ *** |
|
|
821 ;;; End: *** |
|
|
822 */ |
