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1 /* |
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2 |
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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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19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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20 |
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21 */ |
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22 |
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240
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23 #ifdef HAVE_CONFIG_H |
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1192
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24 #include <config.h> |
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25 #endif |
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26 |
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1346
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27 #include <cfloat> |
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3124
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28 #include <cmath> |
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1343
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29 #include <cstddef> |
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1346
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30 #include <cstdio> |
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1343
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31 #include <cstdlib> |
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32 #include <cstring> |
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33 |
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3503
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34 #include <iostream> |
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1728
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35 #include <string> |
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36 |
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1350
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37 #ifdef HAVE_UNISTD_H |
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2442
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38 #ifdef HAVE_SYS_TYPES_H |
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529
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39 #include <sys/types.h> |
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2442
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40 #endif |
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529
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41 #include <unistd.h> |
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42 #endif |
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43 |
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1430
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44 #if defined (HAVE_TERMIOS_H) |
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45 #include <termios.h> |
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46 #elif defined (HAVE_TERMIO_H) |
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47 #include <termio.h> |
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48 #elif defined (HAVE_SGTTY_H) |
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49 #include <sgtty.h> |
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4067
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50 #endif |
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51 |
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52 #if defined (HAVE_CONIO_H) |
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53 #include <conio.h> |
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1430
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54 #endif |
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55 |
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3248
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56 #if defined (HAVE_SYS_IOCTL_H) |
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57 #include <sys/ioctl.h> |
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58 #endif |
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59 |
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1463
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60 #if defined (HAVE_FLOATINGPOINT_H) |
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61 #include <floatingpoint.h> |
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62 #endif |
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63 |
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2508
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64 #if defined (HAVE_IEEEFP_H) |
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65 #include <ieeefp.h> |
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66 #endif |
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67 |
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1463
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68 #if !defined (HAVE_GETHOSTNAME) && defined (HAVE_SYS_UTSNAME_H) |
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69 #include <sys/utsname.h> |
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70 #endif |
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71 |
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2926
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72 #include "cmd-edit.h" |
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73 #include "file-ops.h" |
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2893
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74 #include "lo-mappers.h" |
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2317
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75 #include "mach-info.h" |
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2926
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76 #include "oct-env.h" |
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1769
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77 |
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1352
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78 #include "defun.h" |
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79 #include "error.h" |
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529
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80 #include "input.h" |
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1755
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81 #include "oct-obj.h" |
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2370
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82 #include "ov.h" |
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3234
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83 #include "pager.h" |
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1352
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84 #include "sysdep.h" |
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1755
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85 #include "toplev.h" |
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529
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86 #include "utils.h" |
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87 |
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88 #ifndef STDIN_FILENO |
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89 #define STDIN_FILENO 1 |
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90 #endif |
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444
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91 |
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2508
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92 #if defined (__386BSD__) || defined (__FreeBSD__) |
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93 static void |
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94 BSD_init (void) |
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95 { |
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96 #if defined (HAVE_FLOATINGPOINT_H) |
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97 // Disable trapping on common exceptions. |
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98 fpsetmask (~(FP_X_OFL|FP_X_INV|FP_X_DZ|FP_X_DNML|FP_X_UFL|FP_X_IMP)); |
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99 #endif |
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100 } |
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101 #endif |
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102 |
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103 #if defined (NeXT) |
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104 extern "C" |
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105 { |
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106 typedef void (*_cplus_fcn_int) (int); |
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107 extern void (*malloc_error (_cplus_fcn_int)) (int); |
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108 } |
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109 |
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110 static void |
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111 malloc_handler (int code) |
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112 { |
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113 if (code == 5) |
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114 warning ("hopefully recoverable malloc error: freeing wild pointer"); |
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115 else |
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116 panic ("probably irrecoverable malloc error: code %d", code); |
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117 } |
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118 |
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119 static void |
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120 NeXT_init (void) |
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121 { |
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122 malloc_error (malloc_handler); |
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123 } |
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3333
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124 #endif |
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125 |
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126 #if defined (__EMX__) |
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127 OS2_init (void) |
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128 { |
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129 _control87 ((EM_INVALID | EM_DENORMAL | EM_ZERODIVIDE | EM_OVERFLOW |
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130 | EM_UNDERFLOW | EM_INEXACT), MCW_EM); |
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131 } |
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132 #endif |
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133 |
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134 #if defined (SCO) |
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135 static void |
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136 SCO_init (void) |
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137 { |
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138 #if defined (HAVE_IEEEFP_H) |
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139 // Disable trapping on common exceptions. |
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140 fpsetmask (~(FP_X_OFL|FP_X_INV|FP_X_DZ|FP_X_DNML|FP_X_UFL|FP_X_IMP)); |
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141 #endif |
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142 } |
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143 #endif |
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144 |
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145 void |
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146 sysdep_init (void) |
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147 { |
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959
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148 #if defined (__386BSD__) || defined (__FreeBSD__) |
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2508
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149 BSD_init (); |
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2610
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150 #elif defined (NeXT) |
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151 NeXT_init (); |
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2610
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152 #elif defined (__EMX__) |
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153 OS2_init (); |
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2508
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154 #elif defined (SCO) |
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155 SCO_init (); |
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1
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156 #endif |
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444
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157 |
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158 octave_ieee_init (); |
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159 } |
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160 |
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767
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161 // Set terminal in raw mode. From less-177. |
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162 // |
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163 // Change terminal to "raw mode", or restore to "normal" mode. |
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164 // "Raw mode" means |
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165 // 1. An outstanding read will complete on receipt of a single keystroke. |
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166 // 2. Input is not echoed. |
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167 // 3. On output, \n is mapped to \r\n. |
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168 // 4. \t is NOT expanded into spaces. |
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169 // 5. Signal-causing characters such as ctrl-C (interrupt), |
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170 // etc. are NOT disabled. |
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171 // It doesn't matter whether an input \n is mapped to \r, or vice versa. |
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172 |
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529
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173 void |
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174 raw_mode (bool on, bool wait) |
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529
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175 { |
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3657
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176 static bool curr_on = false; |
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177 |
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178 int tty_fd = STDIN_FILENO; |
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179 if (! isatty (tty_fd)) |
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180 { |
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181 if (interactive) |
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182 error ("stdin is not a tty!"); |
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183 return; |
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184 } |
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185 |
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186 if (on == curr_on) |
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187 return; |
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188 |
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189 #if defined (HAVE_TERMIOS_H) |
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190 { |
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191 struct termios s; |
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192 static struct termios save_term; |
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193 |
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194 if (on) |
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195 { |
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1358
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196 // Get terminal modes. |
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529
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197 |
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198 tcgetattr (tty_fd, &s); |
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199 |
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200 // Save modes and set certain variables dependent on modes. |
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201 |
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202 save_term = s; |
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203 // ospeed = s.c_cflag & CBAUD; |
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204 // erase_char = s.c_cc[VERASE]; |
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205 // kill_char = s.c_cc[VKILL]; |
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206 |
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1358
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207 // Set the modes to the way we want them. |
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208 |
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209 s.c_lflag &= ~(ICANON|ECHO|ECHOE|ECHOK|ECHONL); |
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210 s.c_oflag |= (OPOST|ONLCR); |
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211 #if defined (OCRNL) |
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212 s.c_oflag &= ~(OCRNL); |
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213 #endif |
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214 #if defined (ONOCR) |
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215 s.c_oflag &= ~(ONOCR); |
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216 #endif |
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217 #if defined (ONLRET) |
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218 s.c_oflag &= ~(ONLRET); |
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219 #endif |
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220 s.c_cc[VMIN] = wait ? 1 : 0; |
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221 s.c_cc[VTIME] = 0; |
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222 } |
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223 else |
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224 { |
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1358
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225 // Restore saved modes. |
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226 |
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529
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227 s = save_term; |
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228 } |
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229 |
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529
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230 tcsetattr (tty_fd, TCSAFLUSH, &s); |
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231 } |
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232 #elif defined (HAVE_TERMIO_H) |
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233 { |
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234 struct termio s; |
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235 static struct termio save_term; |
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236 |
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237 if (on) |
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238 { |
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239 // Get terminal modes. |
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240 |
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241 ioctl (tty_fd, TCGETA, &s); |
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242 |
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243 // Save modes and set certain variables dependent on modes. |
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244 |
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245 save_term = s; |
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246 // ospeed = s.c_cflag & CBAUD; |
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247 // erase_char = s.c_cc[VERASE]; |
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248 // kill_char = s.c_cc[VKILL]; |
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249 |
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250 // Set the modes to the way we want them. |
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251 |
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252 s.c_lflag &= ~(ICANON|ECHO|ECHOE|ECHOK|ECHONL); |
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253 s.c_oflag |= (OPOST|ONLCR); |
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254 #if defined (OCRNL) |
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255 s.c_oflag &= ~(OCRNL); |
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256 #endif |
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257 #if defined (ONOCR) |
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258 s.c_oflag &= ~(ONOCR); |
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259 #endif |
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260 #if defined (ONLRET) |
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261 s.c_oflag &= ~(ONLRET); |
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262 #endif |
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263 s.c_cc[VMIN] = wait ? 1 : 0; |
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529
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264 } |
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265 else |
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266 { |
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267 // Restore saved modes. |
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268 |
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529
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269 s = save_term; |
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270 } |
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3658
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271 |
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529
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272 ioctl (tty_fd, TCSETAW, &s); |
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273 } |
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274 #elif defined (HAVE_SGTTY_H) |
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275 { |
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276 struct sgttyb s; |
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277 static struct sgttyb save_term; |
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278 |
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279 if (on) |
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280 { |
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1358
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281 // Get terminal modes. |
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529
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282 |
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283 ioctl (tty_fd, TIOCGETP, &s); |
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284 |
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285 // Save modes and set certain variables dependent on modes. |
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286 |
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287 save_term = s; |
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288 // ospeed = s.sg_ospeed; |
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289 // erase_char = s.sg_erase; |
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290 // kill_char = s.sg_kill; |
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291 |
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1358
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292 // Set the modes to the way we want them. |
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529
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293 |
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294 s.sg_flags |= CBREAK; |
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295 s.sg_flags &= ~(ECHO); |
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296 } |
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297 else |
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298 { |
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1358
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299 // Restore saved modes. |
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300 |
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529
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301 s = save_term; |
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302 } |
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3658
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303 |
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529
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304 ioctl (tty_fd, TIOCSETN, &s); |
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305 } |
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306 #else |
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4064
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307 warning ("no support for raw mode console I/O on this system"); |
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308 |
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309 // Make sure the current mode doesn't toggle. |
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310 on = curr_on; |
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529
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311 #endif |
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312 |
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313 curr_on = on; |
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314 } |
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315 |
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767
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316 // Read one character from the terminal. |
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317 |
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529
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318 int |
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4067
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319 octave_kbhit (bool wait) |
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529
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320 { |
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4067
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321 #ifdef HAVE__KBHIT |
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322 int c = (! wait && ! _kbhit ()) ? 0 : std::cin.get (); |
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323 #else |
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3658
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324 raw_mode (true, wait); |
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325 |
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326 int c = std::cin.get (); |
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327 |
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328 if (std::cin.fail () || std::cin.eof ()) |
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329 std::cin.clear (); |
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330 |
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331 raw_mode (false, true); |
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4067
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332 #endif |
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3658
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333 |
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529
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334 return c; |
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335 } |
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336 |
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1957
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337 DEFUN (clc, , , |
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3332
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338 "-*- texinfo -*-\n\ |
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339 @deftypefn {Built-in Function} {} clc ()\n\ |
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340 @deftypefnx {Built-in Function} {} home ()\n\ |
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341 Clear the terminal screen and move the cursor to the upper left corner.\n\ |
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3333
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342 @end deftypefn") |
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529
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343 { |
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2926
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344 command_editor::clear_screen (); |
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529
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345 |
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2926
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346 return octave_value_list (); |
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529
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347 } |
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348 |
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549
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349 DEFALIAS (home, clc); |
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350 |
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1957
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351 DEFUN (getenv, args, , |
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3301
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352 "-*- texinfo -*-\n\ |
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353 @deftypefn {Built-in Function} {} getenv (@var{var})\n\ |
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354 Return the value of the environment variable @var{var}. For example,\n\ |
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355 \n\ |
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356 @example\n\ |
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357 getenv (\"PATH\")\n\ |
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358 @end example\n\ |
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359 \n\ |
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360 @noindent\n\ |
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361 returns a string containing the value of your path.\n\ |
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362 @end deftypefn") |
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529
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363 { |
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2086
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364 octave_value_list retval; |
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529
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365 |
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366 int nargin = args.length (); |
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367 |
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712
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368 if (nargin == 1) |
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529
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369 { |
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3523
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370 std::string name = args(0).string_value (); |
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636
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371 |
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372 if (! error_state) |
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2926
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373 retval = octave_env::getenv (name); |
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529
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374 } |
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375 else |
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376 print_usage ("getenv"); |
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377 |
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378 return retval; |
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379 } |
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380 |
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1957
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381 DEFUN (putenv, args, , |
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3301
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382 "-*- texinfo -*-\n\ |
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383 @deftypefn {Built-in Function} {} putenv (@var{var}, @var{value})\n\ |
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384 Set the value of the environment variable @var{var} to @var{value}.\n\ |
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385 @end deftypefn") |
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1706
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386 { |
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2086
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387 octave_value_list retval; |
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1706
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388 |
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389 int nargin = args.length (); |
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390 |
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391 if (nargin == 2) |
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392 { |
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3523
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393 std::string var = args(0).string_value (); |
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1706
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394 |
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395 if (! error_state) |
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396 { |
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3523
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397 std::string val = args(1).string_value (); |
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1706
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398 |
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399 if (! error_state) |
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2926
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400 octave_env::putenv (var, val); |
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1706
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401 else |
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402 error ("putenv: second argument should be a string"); |
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403 } |
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404 else |
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405 error ("putenv: first argument should be a string"); |
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406 } |
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407 else |
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408 print_usage ("putenv"); |
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409 |
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410 return retval; |
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411 } |
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412 |
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3372
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413 // XXX FIXME XXX -- perhaps kbhit should also be able to print a prompt? |
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414 |
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3657
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415 DEFUN (kbhit, args, , |
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3372
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416 "-*- texinfo -*-\n\ |
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417 @deftypefn {Built-in Function} {} kbhit ()\n\ |
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3657
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418 Read a single keystroke from the keyboard. If called with one\n\ |
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419 argument, don't wait for a keypress. For example,\n\ |
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3372
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420 \n\ |
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421 @example\n\ |
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422 x = kbhit ();\n\ |
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423 @end example\n\ |
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424 \n\ |
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425 @noindent\n\ |
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426 will set @var{x} to the next character typed at the keyboard as soon as\n\ |
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427 it is typed.\n\ |
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3657
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428 \n\ |
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429 @example\n\ |
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430 x = kbhit (1);\n\ |
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431 @end example\n\ |
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432 \n\ |
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433 @noindent\n\ |
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434 identical to the above example, but don't wait for a keypress,\n\ |
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435 returning the empty string if no key is available.\n\ |
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3372
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436 @end deftypefn") |
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529
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437 { |
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2086
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438 octave_value_list retval; |
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529
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439 |
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1358
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440 // XXX FIXME XXX -- add timeout and default value args? |
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529
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441 |
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3676
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442 if (interactive || forced_interactive) |
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529
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443 { |
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4067
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444 int c = octave_kbhit (args.length () == 0); |
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3657
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445 |
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3658
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446 if (c == -1) |
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447 c = 0; |
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3657
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448 |
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529
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449 char *s = new char [2]; |
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450 s[0] = c; |
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451 s[1] = '\0'; |
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452 retval = s; |
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453 } |
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454 |
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455 return retval; |
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456 } |
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457 |
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1957
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458 DEFUN (pause, args, , |
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3301
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459 "-*- texinfo -*-\n\ |
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460 @deftypefn {Built-in Function} {} pause (@var{seconds})\n\ |
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461 Suspend the execution of the program. If invoked without any arguments,\n\ |
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462 Octave waits until you type a character. With a numeric argument, it\n\ |
|
|
463 pauses for the given number of seconds. For example, the following\n\ |
|
|
464 statement prints a message and then waits 5 seconds before clearing the\n\ |
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465 screen.\n\ |
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466 \n\ |
|
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467 @example\n\ |
|
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468 @group\n\ |
|
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469 fprintf (stderr, \"wait please...\n\");\n\ |
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470 pause (5);\n\ |
|
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471 clc;\n\ |
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472 @end group\n\ |
|
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473 @end example\n\ |
|
|
474 @end deftypefn") |
|
529
|
475 { |
|
2086
|
476 octave_value_list retval; |
|
529
|
477 |
|
|
478 int nargin = args.length (); |
|
|
479 |
|
712
|
480 if (! (nargin == 0 || nargin == 1)) |
|
529
|
481 { |
|
|
482 print_usage ("pause"); |
|
|
483 return retval; |
|
|
484 } |
|
|
485 |
|
1579
|
486 if (nargin == 1) |
|
529
|
487 { |
|
1579
|
488 double dval = args(0).double_value (); |
|
636
|
489 |
|
1579
|
490 if (! error_state) |
|
|
491 { |
|
|
492 if (xisnan (dval)) |
|
|
493 warning ("pause: NaN is an invalid delay"); |
|
2630
|
494 else if (xisinf (dval)) |
|
3234
|
495 { |
|
|
496 flush_octave_stdout (); |
|
4067
|
497 octave_kbhit (); |
|
3234
|
498 } |
|
1579
|
499 else |
|
4086
|
500 octave_sleep (dval); |
|
529
|
501 } |
|
|
502 } |
|
1579
|
503 else |
|
3234
|
504 { |
|
|
505 flush_octave_stdout (); |
|
4067
|
506 octave_kbhit (); |
|
3234
|
507 } |
|
2630
|
508 |
|
|
509 return retval; |
|
|
510 } |
|
|
511 |
|
|
512 DEFUN (sleep, args, , |
|
3301
|
513 "-*- texinfo -*-\n\ |
|
|
514 @deftypefn {Built-in Function} {} sleep (@var{seconds})\n\ |
|
|
515 Suspend the execution of the program for the given number of seconds.\n\ |
|
|
516 @end deftypefn") |
|
2630
|
517 { |
|
|
518 octave_value_list retval; |
|
|
519 |
|
|
520 if (args.length () == 1) |
|
1579
|
521 { |
|
2630
|
522 double dval = args(0).double_value (); |
|
|
523 |
|
|
524 if (! error_state) |
|
|
525 { |
|
|
526 if (xisnan (dval)) |
|
|
527 warning ("sleep: NaN is an invalid delay"); |
|
|
528 else |
|
4086
|
529 octave_sleep (dval); |
|
2630
|
530 } |
|
1579
|
531 } |
|
2630
|
532 else |
|
|
533 print_usage ("sleep"); |
|
|
534 |
|
|
535 return retval; |
|
|
536 } |
|
|
537 |
|
|
538 DEFUN (usleep, args, , |
|
3301
|
539 "-*- texinfo -*-\n\ |
|
|
540 @deftypefn {Built-in Function} {} usleep (@var{microseconds})\n\ |
|
|
541 Suspend the execution of the program for the given number of\n\ |
|
|
542 microseconds. On systems where it is not possible to sleep for periods\n\ |
|
|
543 of time less than one second, @code{usleep} will pause the execution for\n\ |
|
|
544 @code{round (@var{microseconds} / 1e6)} seconds.\n\ |
|
|
545 @end deftypefn") |
|
2630
|
546 { |
|
|
547 octave_value_list retval; |
|
|
548 |
|
|
549 if (args.length () == 1) |
|
|
550 { |
|
|
551 double dval = args(0).double_value (); |
|
|
552 |
|
|
553 if (! error_state) |
|
|
554 { |
|
|
555 if (xisnan (dval)) |
|
|
556 warning ("usleep: NaN is an invalid delay"); |
|
|
557 else |
|
|
558 { |
|
|
559 int delay = NINT (dval); |
|
2631
|
560 |
|
2630
|
561 if (delay > 0) |
|
3308
|
562 octave_usleep (delay); |
|
2630
|
563 } |
|
|
564 } |
|
|
565 } |
|
|
566 else |
|
|
567 print_usage ("usleep"); |
|
529
|
568 |
|
|
569 return retval; |
|
|
570 } |
|
|
571 |
|
862
|
572 // XXX FIXME XXX -- maybe this should only return 1 if IEEE floating |
|
|
573 // point functions really work. |
|
|
574 |
|
1957
|
575 DEFUN (isieee, , , |
|
3301
|
576 "-*- texinfo -*-\n\ |
|
|
577 @deftypefn {Built-in Function} {} isieee ()\n\ |
|
|
578 Return 1 if your computer claims to conform to the IEEE standard for\n\ |
|
|
579 floating point calculations.\n\ |
|
|
580 @end deftypefn") |
|
862
|
581 { |
|
2317
|
582 oct_mach_info::float_format flt_fmt = |
|
|
583 oct_mach_info::native_float_format (); |
|
|
584 |
|
2800
|
585 return static_cast<double> (flt_fmt == oct_mach_info::ieee_little_endian |
|
|
586 || flt_fmt == oct_mach_info::ieee_big_endian); |
|
862
|
587 } |
|
|
588 |
|
1957
|
589 DEFUN (tilde_expand, args, , |
|
3301
|
590 "-*- texinfo -*-\n\ |
|
|
591 @deftypefn {Built-in Function} {} tilde_expand (@var{string})\n\ |
|
|
592 Performs tilde expansion on @var{string}. If @var{string} begins with a\n\ |
|
|
593 tilde character, (@samp{~}), all of the characters preceding the first\n\ |
|
|
594 slash (or all characters, if there is no slash) are treated as a\n\ |
|
|
595 possible user name, and the tilde and the following characters up to the\n\ |
|
|
596 slash are replaced by the home directory of the named user. If the\n\ |
|
|
597 tilde is followed immediately by a slash, the tilde is replaced by the\n\ |
|
|
598 home directory of the user running Octave. For example,\n\ |
|
|
599 \n\ |
|
|
600 @example\n\ |
|
|
601 @group\n\ |
|
|
602 tilde_expand (\"~joeuser/bin\")\n\ |
|
|
603 @result{} \"/home/joeuser/bin\"\n\ |
|
|
604 tilde_expand (\"~/bin\")\n\ |
|
|
605 @result{} \"/home/jwe/bin\"\n\ |
|
|
606 @end group\n\ |
|
|
607 @end example\n\ |
|
|
608 @end deftypefn") |
|
1750
|
609 { |
|
2086
|
610 octave_value_list retval; |
|
1750
|
611 |
|
|
612 int nargin = args.length (); |
|
|
613 |
|
|
614 if (nargin == 1) |
|
2926
|
615 retval = file_ops::tilde_expand (args(0).all_strings ()); |
|
1750
|
616 else |
|
|
617 print_usage ("tilde_expand"); |
|
|
618 |
|
|
619 return retval; |
|
|
620 } |
|
|
621 |
|
2552
|
622 #if defined (__EMX__) && defined (OS2) |
|
|
623 |
|
|
624 DEFUN_TEXT (extproc, , , |
|
2926
|
625 "extproc: ignored by Octave") |
|
2552
|
626 { |
|
|
627 return octave_value_list (); |
|
|
628 } |
|
|
629 |
|
|
630 DEFALIAS (EXTPROC, extproc); |
|
|
631 |
|
|
632 #endif |
|
|
633 |
|
529
|
634 /* |
|
1
|
635 ;;; Local Variables: *** |
|
|
636 ;;; mode: C++ *** |
|
|
637 ;;; End: *** |
|
|
638 */ |
