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