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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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6208
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80 #include "Cell.h" |
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1352
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81 #include "defun.h" |
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82 #include "error.h" |
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529
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83 #include "input.h" |
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1755
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84 #include "oct-obj.h" |
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2370
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85 #include "ov.h" |
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3234
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86 #include "pager.h" |
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6419
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87 #include "parse.h" |
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5770
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88 #include "sighandlers.h" |
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1352
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89 #include "sysdep.h" |
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1755
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90 #include "toplev.h" |
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529
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91 #include "utils.h" |
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92 |
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93 #ifndef STDIN_FILENO |
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94 #define STDIN_FILENO 1 |
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95 #endif |
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444
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96 |
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2508
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97 #if defined (__386BSD__) || defined (__FreeBSD__) |
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98 static void |
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99 BSD_init (void) |
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100 { |
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101 #if defined (HAVE_FLOATINGPOINT_H) |
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102 // Disable trapping on common exceptions. |
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4164
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103 #ifndef FP_X_DNML |
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104 #define FP_X_DNML 0 |
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105 #endif |
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2508
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106 fpsetmask (~(FP_X_OFL|FP_X_INV|FP_X_DZ|FP_X_DNML|FP_X_UFL|FP_X_IMP)); |
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107 #endif |
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108 } |
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109 #endif |
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110 |
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6080
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111 static void |
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112 w32_set_octave_home (void) |
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113 { |
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114 #if defined (__WIN32__) && ! defined (_POSIX_VERSION) |
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115 int n = 1024; |
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116 |
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6086
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117 std::string bin_dir (n, '\0'); |
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6080
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118 |
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119 while (true) |
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120 { |
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121 int status = GetModuleFileName (0, &bin_dir[0], n); |
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122 |
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123 if (status < n) |
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124 { |
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125 bin_dir.resize (status); |
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126 break; |
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127 } |
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128 else |
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129 { |
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130 n *= 2; |
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131 bin_dir.resize (n); |
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132 } |
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133 } |
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134 |
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135 if (! bin_dir.empty ()) |
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136 { |
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137 size_t pos = bin_dir.rfind ("\\bin\\"); |
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138 |
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139 if (pos != NPOS) |
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140 octave_env::putenv ("OCTAVE_HOME", bin_dir.substr (0, pos)); |
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141 } |
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142 #endif |
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143 } |
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144 |
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5451
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145 void |
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146 w32_set_quiet_shutdown (void) |
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147 { |
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148 #if defined (__WIN32__) && ! defined (_POSIX_VERSION) |
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149 // Let the user close the console window or shutdown without the |
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150 // pesky dialog. |
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151 // |
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5775
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152 // FIXME -- should this be user configurable? |
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5451
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153 SetProcessShutdownParameters (0x280, SHUTDOWN_NORETRY); |
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154 #endif |
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155 } |
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156 |
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157 #if defined (__WIN32__) && ! defined (_POSIX_VERSION) |
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158 void |
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159 MINGW_signal_cleanup (void) |
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160 { |
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5455
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161 w32_set_quiet_shutdown (); |
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162 |
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5455
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163 w32_raise_final (); |
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5451
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164 } |
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165 #endif |
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166 |
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167 #if defined (__MINGW32__) |
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168 static void |
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169 MINGW_init (void) |
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170 { |
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6080
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171 w32_set_octave_home (); |
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172 |
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5451
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173 // Init mutex to protect setjmp/longjmp and get main thread context |
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174 w32_sigint_init (); |
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175 |
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176 w32_set_quiet_shutdown (); |
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177 } |
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178 #endif |
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179 |
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6080
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180 #if defined (_MSC_VER) |
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181 static void |
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182 MSVC_init (void) |
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183 { |
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184 w32_set_octave_home (); |
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6135
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185 |
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186 // Init mutex to protect setjmp/longjmp and get main thread context |
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187 w32_sigint_init (); |
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188 |
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189 w32_set_quiet_shutdown (); |
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6080
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190 } |
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191 #endif |
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192 |
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4091
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193 #if defined (__CYGWIN__) |
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194 |
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195 #include <limits.h> |
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196 #include <sys/cygwin.h> |
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197 |
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198 static void |
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199 CYGWIN_init (void) |
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200 { |
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4470
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201 // Make sure TMPDIR contains an absolute windows path. Use '/' |
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202 // rather than '\\' so that sh expansion won't mess file names. |
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203 |
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4091
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204 std::string tmpdir = octave_env::getenv ("TMPDIR"); |
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205 |
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206 if (tmpdir.empty ()) |
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4470
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207 tmpdir = "/tmp"; |
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208 |
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209 char buf [PATH_MAX]; |
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4091
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210 |
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4470
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211 if (cygwin32_conv_to_full_win32_path (tmpdir.c_str (), buf) < 0) |
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212 panic ("CYGWIN_init: unable to convert TMPDIR (= \"%s\") to Windows directory name", |
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213 tmpdir.c_str ()); |
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214 else |
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215 { |
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216 tmpdir = buf; |
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4091
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217 |
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4470
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218 for (size_t i = 0; i < tmpdir.length (); i++) |
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219 if (tmpdir[i] == '\\') |
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220 tmpdir[i] = '/'; |
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4091
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221 } |
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4470
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222 |
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223 octave_env::putenv ("TMPDIR", tmpdir); |
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4091
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224 } |
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225 #endif |
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226 |
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4284
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227 #if defined (__DECCXX) |
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228 |
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229 // These don't seem to be instantiated automatically... |
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230 |
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231 template std::istream& |
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232 std::operator >> (std::istream&, std::complex<double>&); |
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233 |
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234 template std::string& |
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235 std::string::append (const std::string&, size_t, size_t); |
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236 |
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237 #endif |
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238 |
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2610
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239 #if defined (NeXT) |
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1
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240 extern "C" |
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241 { |
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242 typedef void (*_cplus_fcn_int) (int); |
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243 extern void (*malloc_error (_cplus_fcn_int)) (int); |
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244 } |
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245 |
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246 static void |
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247 malloc_handler (int code) |
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248 { |
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249 if (code == 5) |
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217
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250 warning ("hopefully recoverable malloc error: freeing wild pointer"); |
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1
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251 else |
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2926
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252 panic ("probably irrecoverable malloc error: code %d", code); |
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1
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253 } |
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254 |
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255 static void |
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256 NeXT_init (void) |
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257 { |
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258 malloc_error (malloc_handler); |
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259 } |
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3333
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260 #endif |
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1
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261 |
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2546
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262 #if defined (__EMX__) |
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263 OS2_init (void) |
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264 { |
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265 _control87 ((EM_INVALID | EM_DENORMAL | EM_ZERODIVIDE | EM_OVERFLOW |
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266 | EM_UNDERFLOW | EM_INEXACT), MCW_EM); |
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267 } |
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268 #endif |
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269 |
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2508
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270 #if defined (SCO) |
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271 static void |
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272 SCO_init (void) |
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273 { |
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274 #if defined (HAVE_IEEEFP_H) |
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275 // Disable trapping on common exceptions. |
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276 fpsetmask (~(FP_X_OFL|FP_X_INV|FP_X_DZ|FP_X_DNML|FP_X_UFL|FP_X_IMP)); |
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277 #endif |
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278 } |
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279 #endif |
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280 |
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1
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281 void |
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282 sysdep_init (void) |
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283 { |
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959
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284 #if defined (__386BSD__) || defined (__FreeBSD__) |
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2508
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285 BSD_init (); |
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4091
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286 #elif defined (__CYGWIN__) |
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287 CYGWIN_init (); |
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5451
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288 #elif defined (__MINGW32__) |
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289 MINGW_init (); |
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6080
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290 #elif defined (_MSC_VER) |
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291 MSVC_init (); |
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2610
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292 #elif defined (NeXT) |
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1
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293 NeXT_init (); |
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2610
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294 #elif defined (__EMX__) |
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2546
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295 OS2_init (); |
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2508
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296 #elif defined (SCO) |
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297 SCO_init (); |
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1
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298 #endif |
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444
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299 |
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300 octave_ieee_init (); |
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1
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301 } |
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302 |
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5451
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303 void |
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304 sysdep_cleanup (void) |
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305 { |
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306 MINGW_SIGNAL_CLEANUP (); |
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307 } |
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308 |
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767
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309 // Set terminal in raw mode. From less-177. |
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310 // |
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311 // Change terminal to "raw mode", or restore to "normal" mode. |
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312 // "Raw mode" means |
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313 // 1. An outstanding read will complete on receipt of a single keystroke. |
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314 // 2. Input is not echoed. |
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315 // 3. On output, \n is mapped to \r\n. |
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316 // 4. \t is NOT expanded into spaces. |
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317 // 5. Signal-causing characters such as ctrl-C (interrupt), |
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318 // etc. are NOT disabled. |
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319 // It doesn't matter whether an input \n is mapped to \r, or vice versa. |
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320 |
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529
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321 void |
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3657
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322 raw_mode (bool on, bool wait) |
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529
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323 { |
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3657
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324 static bool curr_on = false; |
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529
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325 |
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326 int tty_fd = STDIN_FILENO; |
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327 if (! isatty (tty_fd)) |
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328 { |
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329 if (interactive) |
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330 error ("stdin is not a tty!"); |
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331 return; |
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332 } |
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333 |
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334 if (on == curr_on) |
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335 return; |
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336 |
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337 #if defined (HAVE_TERMIOS_H) |
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338 { |
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339 struct termios s; |
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340 static struct termios save_term; |
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341 |
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342 if (on) |
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343 { |
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1358
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344 // Get terminal modes. |
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529
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345 |
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346 tcgetattr (tty_fd, &s); |
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347 |
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1358
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348 // Save modes and set certain variables dependent on modes. |
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529
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349 |
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350 save_term = s; |
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351 // ospeed = s.c_cflag & CBAUD; |
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352 // erase_char = s.c_cc[VERASE]; |
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353 // kill_char = s.c_cc[VKILL]; |
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354 |
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1358
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355 // Set the modes to the way we want them. |
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529
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356 |
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357 s.c_lflag &= ~(ICANON|ECHO|ECHOE|ECHOK|ECHONL); |
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358 s.c_oflag |= (OPOST|ONLCR); |
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359 #if defined (OCRNL) |
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360 s.c_oflag &= ~(OCRNL); |
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361 #endif |
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362 #if defined (ONOCR) |
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363 s.c_oflag &= ~(ONOCR); |
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364 #endif |
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365 #if defined (ONLRET) |
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366 s.c_oflag &= ~(ONLRET); |
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367 #endif |
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3658
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368 s.c_cc[VMIN] = wait ? 1 : 0; |
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529
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369 s.c_cc[VTIME] = 0; |
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370 } |
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371 else |
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372 { |
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1358
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373 // Restore saved modes. |
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374 |
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529
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375 s = save_term; |
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376 } |
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3658
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377 |
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529
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378 tcsetattr (tty_fd, TCSAFLUSH, &s); |
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379 } |
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380 #elif defined (HAVE_TERMIO_H) |
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381 { |
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382 struct termio s; |
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383 static struct termio save_term; |
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384 |
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385 if (on) |
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386 { |
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1358
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387 // Get terminal modes. |
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529
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388 |
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389 ioctl (tty_fd, TCGETA, &s); |
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390 |
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1358
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391 // Save modes and set certain variables dependent on modes. |
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529
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392 |
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393 save_term = s; |
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394 // ospeed = s.c_cflag & CBAUD; |
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395 // erase_char = s.c_cc[VERASE]; |
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396 // kill_char = s.c_cc[VKILL]; |
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397 |
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1358
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398 // Set the modes to the way we want them. |
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529
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399 |
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400 s.c_lflag &= ~(ICANON|ECHO|ECHOE|ECHOK|ECHONL); |
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401 s.c_oflag |= (OPOST|ONLCR); |
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402 #if defined (OCRNL) |
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403 s.c_oflag &= ~(OCRNL); |
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404 #endif |
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405 #if defined (ONOCR) |
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406 s.c_oflag &= ~(ONOCR); |
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407 #endif |
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408 #if defined (ONLRET) |
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409 s.c_oflag &= ~(ONLRET); |
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410 #endif |
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3658
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411 s.c_cc[VMIN] = wait ? 1 : 0; |
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529
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412 } |
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413 else |
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414 { |
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1358
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415 // Restore saved modes. |
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416 |
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529
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417 s = save_term; |
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418 } |
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3658
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419 |
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529
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420 ioctl (tty_fd, TCSETAW, &s); |
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421 } |
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422 #elif defined (HAVE_SGTTY_H) |
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423 { |
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424 struct sgttyb s; |
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425 static struct sgttyb save_term; |
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426 |
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427 if (on) |
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428 { |
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1358
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429 // Get terminal modes. |
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529
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430 |
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431 ioctl (tty_fd, TIOCGETP, &s); |
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432 |
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1358
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433 // Save modes and set certain variables dependent on modes. |
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529
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434 |
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435 save_term = s; |
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436 // ospeed = s.sg_ospeed; |
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437 // erase_char = s.sg_erase; |
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438 // kill_char = s.sg_kill; |
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439 |
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1358
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440 // Set the modes to the way we want them. |
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529
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441 |
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442 s.sg_flags |= CBREAK; |
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443 s.sg_flags &= ~(ECHO); |
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444 } |
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445 else |
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446 { |
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1358
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447 // Restore saved modes. |
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448 |
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529
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449 s = save_term; |
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450 } |
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3658
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451 |
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529
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452 ioctl (tty_fd, TIOCSETN, &s); |
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453 } |
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454 #else |
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4064
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455 warning ("no support for raw mode console I/O on this system"); |
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456 |
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457 // Make sure the current mode doesn't toggle. |
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458 on = curr_on; |
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529
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459 #endif |
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460 |
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461 curr_on = on; |
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462 } |
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463 |
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767
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464 // Read one character from the terminal. |
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465 |
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529
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466 int |
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4067
|
467 octave_kbhit (bool wait) |
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529
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468 { |
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4067
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469 #ifdef HAVE__KBHIT |
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4081
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470 int c = (! wait && ! _kbhit ()) ? 0 : std::cin.get (); |
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4067
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471 #else |
|
3658
|
472 raw_mode (true, wait); |
|
|
473 |
|
5770
|
474 // Get current handler. |
|
|
475 octave_interrupt_handler saved_interrupt_handler |
|
|
476 = octave_ignore_interrupts (); |
|
|
477 |
|
|
478 // Restore it, disabling system call restarts (if possible) so the |
|
|
479 // read can be interrupted. |
|
|
480 |
|
|
481 octave_set_interrupt_handler (saved_interrupt_handler, false); |
|
|
482 |
|
3658
|
483 int c = std::cin.get (); |
|
5770
|
484 |
|
3658
|
485 if (std::cin.fail () || std::cin.eof ()) |
|
|
486 std::cin.clear (); |
|
|
487 |
|
5770
|
488 // Restore it, enabling system call restarts (if possible). |
|
|
489 octave_set_interrupt_handler (saved_interrupt_handler, true); |
|
|
490 |
|
3658
|
491 raw_mode (false, true); |
|
4067
|
492 #endif |
|
3658
|
493 |
|
529
|
494 return c; |
|
|
495 } |
|
|
496 |
|
1957
|
497 DEFUN (clc, , , |
|
3332
|
498 "-*- texinfo -*-\n\ |
|
|
499 @deftypefn {Built-in Function} {} clc ()\n\ |
|
|
500 @deftypefnx {Built-in Function} {} home ()\n\ |
|
|
501 Clear the terminal screen and move the cursor to the upper left corner.\n\ |
|
3333
|
502 @end deftypefn") |
|
529
|
503 { |
|
2926
|
504 command_editor::clear_screen (); |
|
529
|
505 |
|
2926
|
506 return octave_value_list (); |
|
529
|
507 } |
|
|
508 |
|
549
|
509 DEFALIAS (home, clc); |
|
|
510 |
|
1957
|
511 DEFUN (getenv, args, , |
|
3301
|
512 "-*- texinfo -*-\n\ |
|
|
513 @deftypefn {Built-in Function} {} getenv (@var{var})\n\ |
|
|
514 Return the value of the environment variable @var{var}. For example,\n\ |
|
|
515 \n\ |
|
|
516 @example\n\ |
|
|
517 getenv (\"PATH\")\n\ |
|
|
518 @end example\n\ |
|
|
519 \n\ |
|
|
520 @noindent\n\ |
|
|
521 returns a string containing the value of your path.\n\ |
|
|
522 @end deftypefn") |
|
529
|
523 { |
|
4233
|
524 octave_value retval; |
|
529
|
525 |
|
|
526 int nargin = args.length (); |
|
|
527 |
|
712
|
528 if (nargin == 1) |
|
529
|
529 { |
|
3523
|
530 std::string name = args(0).string_value (); |
|
636
|
531 |
|
|
532 if (! error_state) |
|
2926
|
533 retval = octave_env::getenv (name); |
|
529
|
534 } |
|
|
535 else |
|
5823
|
536 print_usage (); |
|
529
|
537 |
|
|
538 return retval; |
|
|
539 } |
|
|
540 |
|
1957
|
541 DEFUN (putenv, args, , |
|
3301
|
542 "-*- texinfo -*-\n\ |
|
|
543 @deftypefn {Built-in Function} {} putenv (@var{var}, @var{value})\n\ |
|
|
544 Set the value of the environment variable @var{var} to @var{value}.\n\ |
|
|
545 @end deftypefn") |
|
1706
|
546 { |
|
2086
|
547 octave_value_list retval; |
|
1706
|
548 |
|
|
549 int nargin = args.length (); |
|
|
550 |
|
|
551 if (nargin == 2) |
|
|
552 { |
|
3523
|
553 std::string var = args(0).string_value (); |
|
1706
|
554 |
|
|
555 if (! error_state) |
|
|
556 { |
|
3523
|
557 std::string val = args(1).string_value (); |
|
1706
|
558 |
|
|
559 if (! error_state) |
|
2926
|
560 octave_env::putenv (var, val); |
|
1706
|
561 else |
|
|
562 error ("putenv: second argument should be a string"); |
|
|
563 } |
|
|
564 else |
|
|
565 error ("putenv: first argument should be a string"); |
|
|
566 } |
|
|
567 else |
|
5823
|
568 print_usage (); |
|
1706
|
569 |
|
|
570 return retval; |
|
|
571 } |
|
|
572 |
|
5775
|
573 // FIXME -- perhaps kbhit should also be able to print a prompt? |
|
3372
|
574 |
|
3657
|
575 DEFUN (kbhit, args, , |
|
3372
|
576 "-*- texinfo -*-\n\ |
|
|
577 @deftypefn {Built-in Function} {} kbhit ()\n\ |
|
3657
|
578 Read a single keystroke from the keyboard. If called with one\n\ |
|
|
579 argument, don't wait for a keypress. For example,\n\ |
|
3372
|
580 \n\ |
|
|
581 @example\n\ |
|
|
582 x = kbhit ();\n\ |
|
|
583 @end example\n\ |
|
|
584 \n\ |
|
|
585 @noindent\n\ |
|
|
586 will set @var{x} to the next character typed at the keyboard as soon as\n\ |
|
|
587 it is typed.\n\ |
|
3657
|
588 \n\ |
|
|
589 @example\n\ |
|
|
590 x = kbhit (1);\n\ |
|
|
591 @end example\n\ |
|
|
592 \n\ |
|
|
593 @noindent\n\ |
|
|
594 identical to the above example, but don't wait for a keypress,\n\ |
|
|
595 returning the empty string if no key is available.\n\ |
|
3372
|
596 @end deftypefn") |
|
529
|
597 { |
|
4233
|
598 octave_value retval; |
|
529
|
599 |
|
5775
|
600 // FIXME -- add timeout and default value args? |
|
529
|
601 |
|
3676
|
602 if (interactive || forced_interactive) |
|
529
|
603 { |
|
6423
|
604 feval ("drawnow"); |
|
|
605 |
|
4067
|
606 int c = octave_kbhit (args.length () == 0); |
|
3657
|
607 |
|
3658
|
608 if (c == -1) |
|
|
609 c = 0; |
|
3657
|
610 |
|
529
|
611 char *s = new char [2]; |
|
|
612 s[0] = c; |
|
|
613 s[1] = '\0'; |
|
|
614 retval = s; |
|
|
615 } |
|
|
616 |
|
|
617 return retval; |
|
|
618 } |
|
|
619 |
|
1957
|
620 DEFUN (pause, args, , |
|
3301
|
621 "-*- texinfo -*-\n\ |
|
|
622 @deftypefn {Built-in Function} {} pause (@var{seconds})\n\ |
|
|
623 Suspend the execution of the program. If invoked without any arguments,\n\ |
|
|
624 Octave waits until you type a character. With a numeric argument, it\n\ |
|
|
625 pauses for the given number of seconds. For example, the following\n\ |
|
|
626 statement prints a message and then waits 5 seconds before clearing the\n\ |
|
|
627 screen.\n\ |
|
|
628 \n\ |
|
|
629 @example\n\ |
|
|
630 @group\n\ |
|
|
631 fprintf (stderr, \"wait please...\n\");\n\ |
|
|
632 pause (5);\n\ |
|
|
633 clc;\n\ |
|
|
634 @end group\n\ |
|
|
635 @end example\n\ |
|
|
636 @end deftypefn") |
|
529
|
637 { |
|
2086
|
638 octave_value_list retval; |
|
529
|
639 |
|
|
640 int nargin = args.length (); |
|
|
641 |
|
712
|
642 if (! (nargin == 0 || nargin == 1)) |
|
529
|
643 { |
|
5823
|
644 print_usage (); |
|
529
|
645 return retval; |
|
|
646 } |
|
|
647 |
|
1579
|
648 if (nargin == 1) |
|
529
|
649 { |
|
1579
|
650 double dval = args(0).double_value (); |
|
636
|
651 |
|
1579
|
652 if (! error_state) |
|
|
653 { |
|
6419
|
654 if (! xisnan (dval)) |
|
3234
|
655 { |
|
6419
|
656 feval ("drawnow"); |
|
|
657 |
|
|
658 if (xisinf (dval)) |
|
|
659 { |
|
|
660 flush_octave_stdout (); |
|
|
661 octave_kbhit (); |
|
|
662 } |
|
|
663 else |
|
|
664 octave_sleep (dval); |
|
3234
|
665 } |
|
1579
|
666 else |
|
6419
|
667 warning ("pause: NaN is an invalid delay"); |
|
529
|
668 } |
|
|
669 } |
|
1579
|
670 else |
|
3234
|
671 { |
|
6423
|
672 feval ("drawnow"); |
|
3234
|
673 flush_octave_stdout (); |
|
4067
|
674 octave_kbhit (); |
|
3234
|
675 } |
|
2630
|
676 |
|
|
677 return retval; |
|
|
678 } |
|
|
679 |
|
|
680 DEFUN (sleep, args, , |
|
3301
|
681 "-*- texinfo -*-\n\ |
|
|
682 @deftypefn {Built-in Function} {} sleep (@var{seconds})\n\ |
|
|
683 Suspend the execution of the program for the given number of seconds.\n\ |
|
|
684 @end deftypefn") |
|
2630
|
685 { |
|
|
686 octave_value_list retval; |
|
|
687 |
|
|
688 if (args.length () == 1) |
|
1579
|
689 { |
|
2630
|
690 double dval = args(0).double_value (); |
|
|
691 |
|
|
692 if (! error_state) |
|
|
693 { |
|
|
694 if (xisnan (dval)) |
|
|
695 warning ("sleep: NaN is an invalid delay"); |
|
|
696 else |
|
6423
|
697 { |
|
|
698 feval ("drawnow"); |
|
|
699 octave_sleep (dval); |
|
|
700 } |
|
2630
|
701 } |
|
1579
|
702 } |
|
2630
|
703 else |
|
5823
|
704 print_usage (); |
|
2630
|
705 |
|
|
706 return retval; |
|
|
707 } |
|
|
708 |
|
|
709 DEFUN (usleep, args, , |
|
3301
|
710 "-*- texinfo -*-\n\ |
|
|
711 @deftypefn {Built-in Function} {} usleep (@var{microseconds})\n\ |
|
|
712 Suspend the execution of the program for the given number of\n\ |
|
|
713 microseconds. On systems where it is not possible to sleep for periods\n\ |
|
|
714 of time less than one second, @code{usleep} will pause the execution for\n\ |
|
|
715 @code{round (@var{microseconds} / 1e6)} seconds.\n\ |
|
|
716 @end deftypefn") |
|
2630
|
717 { |
|
|
718 octave_value_list retval; |
|
|
719 |
|
|
720 if (args.length () == 1) |
|
|
721 { |
|
|
722 double dval = args(0).double_value (); |
|
|
723 |
|
|
724 if (! error_state) |
|
|
725 { |
|
|
726 if (xisnan (dval)) |
|
|
727 warning ("usleep: NaN is an invalid delay"); |
|
|
728 else |
|
|
729 { |
|
6423
|
730 feval ("drawnow"); |
|
|
731 |
|
2630
|
732 int delay = NINT (dval); |
|
2631
|
733 |
|
2630
|
734 if (delay > 0) |
|
3308
|
735 octave_usleep (delay); |
|
2630
|
736 } |
|
|
737 } |
|
|
738 } |
|
|
739 else |
|
5823
|
740 print_usage (); |
|
529
|
741 |
|
|
742 return retval; |
|
|
743 } |
|
|
744 |
|
5775
|
745 // FIXME -- maybe this should only return 1 if IEEE floating |
|
862
|
746 // point functions really work. |
|
|
747 |
|
1957
|
748 DEFUN (isieee, , , |
|
3301
|
749 "-*- texinfo -*-\n\ |
|
|
750 @deftypefn {Built-in Function} {} isieee ()\n\ |
|
|
751 Return 1 if your computer claims to conform to the IEEE standard for\n\ |
|
|
752 floating point calculations.\n\ |
|
|
753 @end deftypefn") |
|
862
|
754 { |
|
4600
|
755 oct_mach_info::float_format flt_fmt = oct_mach_info::native_float_format (); |
|
2317
|
756 |
|
4574
|
757 return octave_value (flt_fmt == oct_mach_info::flt_fmt_ieee_little_endian |
|
|
758 || flt_fmt == oct_mach_info::flt_fmt_ieee_big_endian); |
|
862
|
759 } |
|
|
760 |
|
4600
|
761 DEFUN (native_float_format, , , |
|
|
762 "-*- texinfo -*-\n\ |
|
|
763 @deftypefn {Built-in Function} {} native_float_format ()\n\ |
|
|
764 Return the native floating point format as a string\n\ |
|
|
765 @end deftypefn") |
|
|
766 { |
|
|
767 oct_mach_info::float_format flt_fmt = oct_mach_info::native_float_format (); |
|
|
768 |
|
|
769 return octave_value (oct_mach_info::float_format_as_string (flt_fmt)); |
|
|
770 } |
|
|
771 |
|
1957
|
772 DEFUN (tilde_expand, args, , |
|
3301
|
773 "-*- texinfo -*-\n\ |
|
|
774 @deftypefn {Built-in Function} {} tilde_expand (@var{string})\n\ |
|
|
775 Performs tilde expansion on @var{string}. If @var{string} begins with a\n\ |
|
|
776 tilde character, (@samp{~}), all of the characters preceding the first\n\ |
|
|
777 slash (or all characters, if there is no slash) are treated as a\n\ |
|
|
778 possible user name, and the tilde and the following characters up to the\n\ |
|
|
779 slash are replaced by the home directory of the named user. If the\n\ |
|
|
780 tilde is followed immediately by a slash, the tilde is replaced by the\n\ |
|
|
781 home directory of the user running Octave. For example,\n\ |
|
|
782 \n\ |
|
|
783 @example\n\ |
|
|
784 @group\n\ |
|
|
785 tilde_expand (\"~joeuser/bin\")\n\ |
|
|
786 @result{} \"/home/joeuser/bin\"\n\ |
|
|
787 tilde_expand (\"~/bin\")\n\ |
|
|
788 @result{} \"/home/jwe/bin\"\n\ |
|
|
789 @end group\n\ |
|
|
790 @end example\n\ |
|
|
791 @end deftypefn") |
|
1750
|
792 { |
|
4233
|
793 octave_value retval; |
|
1750
|
794 |
|
|
795 int nargin = args.length (); |
|
|
796 |
|
|
797 if (nargin == 1) |
|
6116
|
798 { |
|
|
799 octave_value arg = args(0); |
|
|
800 |
|
|
801 string_vector sv = arg.all_strings (); |
|
|
802 |
|
|
803 if (! error_state) |
|
|
804 { |
|
|
805 sv = file_ops::tilde_expand (sv); |
|
|
806 |
|
|
807 if (arg.is_cellstr ()) |
|
|
808 retval = Cell (arg.dims (), sv); |
|
|
809 else |
|
|
810 retval = sv; |
|
|
811 } |
|
|
812 else |
|
|
813 error ("tilde_expand: expecting argument to be char or cellstr object"); |
|
|
814 } |
|
1750
|
815 else |
|
5823
|
816 print_usage (); |
|
1750
|
817 |
|
|
818 return retval; |
|
|
819 } |
|
|
820 |
|
2552
|
821 #if defined (__EMX__) && defined (OS2) |
|
|
822 |
|
4208
|
823 DEFCMD (extproc, , , |
|
2926
|
824 "extproc: ignored by Octave") |
|
2552
|
825 { |
|
|
826 return octave_value_list (); |
|
|
827 } |
|
|
828 |
|
|
829 DEFALIAS (EXTPROC, extproc); |
|
|
830 |
|
|
831 #endif |
|
|
832 |
|
529
|
833 /* |
|
1
|
834 ;;; Local Variables: *** |
|
|
835 ;;; mode: C++ *** |
|
|
836 ;;; End: *** |
|
|
837 */ |
