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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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1
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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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50 #else |
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51 LOSE! LOSE! |
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52 #endif |
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53 |
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3248
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54 #if defined (HAVE_SYS_IOCTL_H) |
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55 #include <sys/ioctl.h> |
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56 #endif |
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57 |
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1463
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58 #if defined (HAVE_FLOATINGPOINT_H) |
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59 #include <floatingpoint.h> |
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60 #endif |
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61 |
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2508
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62 #if defined (HAVE_IEEEFP_H) |
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63 #include <ieeefp.h> |
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64 #endif |
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65 |
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1463
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66 #if !defined (HAVE_GETHOSTNAME) && defined (HAVE_SYS_UTSNAME_H) |
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67 #include <sys/utsname.h> |
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68 #endif |
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69 |
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2926
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70 #include "cmd-edit.h" |
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71 #include "file-ops.h" |
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2893
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72 #include "lo-mappers.h" |
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2317
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73 #include "mach-info.h" |
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2926
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74 #include "oct-env.h" |
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1769
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75 |
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1352
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76 #include "defun.h" |
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77 #include "error.h" |
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529
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78 #include "input.h" |
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1755
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79 #include "oct-obj.h" |
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2370
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80 #include "ov.h" |
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3234
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81 #include "pager.h" |
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1352
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82 #include "sysdep.h" |
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1755
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83 #include "toplev.h" |
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529
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84 #include "utils.h" |
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85 |
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86 #ifndef STDIN_FILENO |
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87 #define STDIN_FILENO 1 |
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88 #endif |
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444
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89 |
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2508
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90 #if defined (__386BSD__) || defined (__FreeBSD__) |
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91 static void |
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92 BSD_init (void) |
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93 { |
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94 #if defined (HAVE_FLOATINGPOINT_H) |
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95 // Disable trapping on common exceptions. |
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96 fpsetmask (~(FP_X_OFL|FP_X_INV|FP_X_DZ|FP_X_DNML|FP_X_UFL|FP_X_IMP)); |
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97 #endif |
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98 } |
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99 #endif |
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100 |
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2610
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101 #if defined (NeXT) |
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102 extern "C" |
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103 { |
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104 typedef void (*_cplus_fcn_int) (int); |
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105 extern void (*malloc_error (_cplus_fcn_int)) (int); |
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106 } |
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107 |
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108 static void |
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109 malloc_handler (int code) |
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110 { |
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111 if (code == 5) |
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217
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112 warning ("hopefully recoverable malloc error: freeing wild pointer"); |
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113 else |
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114 panic ("probably irrecoverable malloc error: code %d", code); |
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115 } |
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116 |
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117 static void |
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118 NeXT_init (void) |
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119 { |
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120 malloc_error (malloc_handler); |
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121 } |
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3333
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122 #endif |
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123 |
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2546
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124 #if defined (__EMX__) |
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125 OS2_init (void) |
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126 { |
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127 _control87 ((EM_INVALID | EM_DENORMAL | EM_ZERODIVIDE | EM_OVERFLOW |
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128 | EM_UNDERFLOW | EM_INEXACT), MCW_EM); |
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129 } |
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130 #endif |
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131 |
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2508
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132 #if defined (SCO) |
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133 static void |
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134 SCO_init (void) |
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135 { |
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136 #if defined (HAVE_IEEEFP_H) |
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137 // Disable trapping on common exceptions. |
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138 fpsetmask (~(FP_X_OFL|FP_X_INV|FP_X_DZ|FP_X_DNML|FP_X_UFL|FP_X_IMP)); |
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139 #endif |
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140 } |
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141 #endif |
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142 |
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143 void |
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144 sysdep_init (void) |
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145 { |
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959
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146 #if defined (__386BSD__) || defined (__FreeBSD__) |
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2508
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147 BSD_init (); |
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2610
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148 #elif defined (NeXT) |
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149 NeXT_init (); |
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2610
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150 #elif defined (__EMX__) |
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2546
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151 OS2_init (); |
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2508
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152 #elif defined (SCO) |
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153 SCO_init (); |
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1
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154 #endif |
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444
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155 |
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156 octave_ieee_init (); |
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1
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157 } |
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158 |
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767
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159 // Set terminal in raw mode. From less-177. |
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160 // |
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161 // Change terminal to "raw mode", or restore to "normal" mode. |
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162 // "Raw mode" means |
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163 // 1. An outstanding read will complete on receipt of a single keystroke. |
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164 // 2. Input is not echoed. |
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165 // 3. On output, \n is mapped to \r\n. |
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166 // 4. \t is NOT expanded into spaces. |
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167 // 5. Signal-causing characters such as ctrl-C (interrupt), |
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168 // etc. are NOT disabled. |
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169 // It doesn't matter whether an input \n is mapped to \r, or vice versa. |
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170 |
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529
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171 void |
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3657
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172 raw_mode (bool on, bool wait) |
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529
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173 { |
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3657
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174 static bool curr_on = false; |
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529
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175 |
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176 int tty_fd = STDIN_FILENO; |
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177 if (! isatty (tty_fd)) |
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178 { |
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179 if (interactive) |
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180 error ("stdin is not a tty!"); |
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181 return; |
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182 } |
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183 |
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184 if (on == curr_on) |
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185 return; |
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186 |
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187 #if defined (HAVE_TERMIOS_H) |
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188 { |
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189 struct termios s; |
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190 static struct termios save_term; |
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191 |
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192 if (on) |
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193 { |
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1358
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194 // Get terminal modes. |
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529
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195 |
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196 tcgetattr (tty_fd, &s); |
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197 |
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1358
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198 // Save modes and set certain variables dependent on modes. |
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529
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199 |
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200 save_term = s; |
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201 // ospeed = s.c_cflag & CBAUD; |
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202 // erase_char = s.c_cc[VERASE]; |
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203 // kill_char = s.c_cc[VKILL]; |
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204 |
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1358
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205 // Set the modes to the way we want them. |
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206 |
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207 s.c_lflag &= ~(ICANON|ECHO|ECHOE|ECHOK|ECHONL); |
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208 s.c_oflag |= (OPOST|ONLCR); |
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209 #if defined (OCRNL) |
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210 s.c_oflag &= ~(OCRNL); |
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211 #endif |
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212 #if defined (ONOCR) |
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213 s.c_oflag &= ~(ONOCR); |
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214 #endif |
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215 #if defined (ONLRET) |
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216 s.c_oflag &= ~(ONLRET); |
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217 #endif |
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218 s.c_cc[VMIN] = wait ? 1 : 0; |
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529
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219 s.c_cc[VTIME] = 0; |
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220 } |
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221 else |
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222 { |
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1358
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223 // Restore saved modes. |
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224 |
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529
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225 s = save_term; |
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226 } |
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227 |
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529
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228 tcsetattr (tty_fd, TCSAFLUSH, &s); |
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229 } |
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230 #elif defined (HAVE_TERMIO_H) |
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231 { |
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232 struct termio s; |
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233 static struct termio save_term; |
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234 |
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235 if (on) |
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236 { |
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1358
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237 // Get terminal modes. |
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529
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238 |
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239 ioctl (tty_fd, TCGETA, &s); |
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240 |
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241 // Save modes and set certain variables dependent on modes. |
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242 |
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243 save_term = s; |
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244 // ospeed = s.c_cflag & CBAUD; |
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245 // erase_char = s.c_cc[VERASE]; |
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246 // kill_char = s.c_cc[VKILL]; |
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247 |
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248 // Set the modes to the way we want them. |
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249 |
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250 s.c_lflag &= ~(ICANON|ECHO|ECHOE|ECHOK|ECHONL); |
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251 s.c_oflag |= (OPOST|ONLCR); |
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252 #if defined (OCRNL) |
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253 s.c_oflag &= ~(OCRNL); |
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254 #endif |
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255 #if defined (ONOCR) |
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256 s.c_oflag &= ~(ONOCR); |
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257 #endif |
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258 #if defined (ONLRET) |
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259 s.c_oflag &= ~(ONLRET); |
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260 #endif |
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261 s.c_cc[VMIN] = wait ? 1 : 0; |
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529
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262 } |
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263 else |
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264 { |
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1358
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265 // Restore saved modes. |
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266 |
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529
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267 s = save_term; |
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268 } |
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269 |
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529
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270 ioctl (tty_fd, TCSETAW, &s); |
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271 } |
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272 #elif defined (HAVE_SGTTY_H) |
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273 { |
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274 struct sgttyb s; |
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275 static struct sgttyb save_term; |
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276 |
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277 if (on) |
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278 { |
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1358
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279 // Get terminal modes. |
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529
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280 |
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281 ioctl (tty_fd, TIOCGETP, &s); |
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282 |
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283 // Save modes and set certain variables dependent on modes. |
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284 |
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285 save_term = s; |
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286 // ospeed = s.sg_ospeed; |
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287 // erase_char = s.sg_erase; |
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288 // kill_char = s.sg_kill; |
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289 |
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290 // Set the modes to the way we want them. |
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291 |
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292 s.sg_flags |= CBREAK; |
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293 s.sg_flags &= ~(ECHO); |
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294 } |
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295 else |
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296 { |
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1358
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297 // Restore saved modes. |
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298 |
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529
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299 s = save_term; |
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300 } |
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3658
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301 |
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529
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302 ioctl (tty_fd, TIOCSETN, &s); |
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303 } |
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304 #else |
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305 LOSE! LOSE! |
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306 #endif |
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307 |
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308 curr_on = on; |
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309 } |
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310 |
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767
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311 // Read one character from the terminal. |
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312 |
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529
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313 int |
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3657
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314 kbhit (bool wait) |
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529
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315 { |
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3658
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316 raw_mode (true, wait); |
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317 |
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318 int c = std::cin.get (); |
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319 |
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320 if (std::cin.fail () || std::cin.eof ()) |
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321 std::cin.clear (); |
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322 |
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323 raw_mode (false, true); |
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324 |
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529
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325 return c; |
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326 } |
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327 |
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1957
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328 DEFUN (clc, , , |
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3332
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329 "-*- texinfo -*-\n\ |
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330 @deftypefn {Built-in Function} {} clc ()\n\ |
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331 @deftypefnx {Built-in Function} {} home ()\n\ |
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332 Clear the terminal screen and move the cursor to the upper left corner.\n\ |
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3333
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333 @end deftypefn") |
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529
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334 { |
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2926
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335 command_editor::clear_screen (); |
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529
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336 |
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2926
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337 return octave_value_list (); |
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529
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338 } |
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339 |
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549
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340 DEFALIAS (home, clc); |
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341 |
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1957
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342 DEFUN (getenv, args, , |
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3301
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343 "-*- texinfo -*-\n\ |
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344 @deftypefn {Built-in Function} {} getenv (@var{var})\n\ |
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345 Return the value of the environment variable @var{var}. For example,\n\ |
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346 \n\ |
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347 @example\n\ |
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348 getenv (\"PATH\")\n\ |
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349 @end example\n\ |
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350 \n\ |
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351 @noindent\n\ |
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352 returns a string containing the value of your path.\n\ |
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353 @end deftypefn") |
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529
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354 { |
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2086
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355 octave_value_list retval; |
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529
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356 |
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357 int nargin = args.length (); |
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358 |
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712
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359 if (nargin == 1) |
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529
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360 { |
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3523
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361 std::string name = args(0).string_value (); |
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636
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362 |
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363 if (! error_state) |
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2926
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364 retval = octave_env::getenv (name); |
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529
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365 } |
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366 else |
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367 print_usage ("getenv"); |
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368 |
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369 return retval; |
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370 } |
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371 |
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1957
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372 DEFUN (putenv, args, , |
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3301
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373 "-*- texinfo -*-\n\ |
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374 @deftypefn {Built-in Function} {} putenv (@var{var}, @var{value})\n\ |
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375 Set the value of the environment variable @var{var} to @var{value}.\n\ |
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376 @end deftypefn") |
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1706
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377 { |
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2086
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378 octave_value_list retval; |
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1706
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379 |
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380 int nargin = args.length (); |
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381 |
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382 if (nargin == 2) |
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383 { |
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3523
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384 std::string var = args(0).string_value (); |
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1706
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385 |
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386 if (! error_state) |
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387 { |
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3523
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388 std::string val = args(1).string_value (); |
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1706
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389 |
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390 if (! error_state) |
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2926
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391 octave_env::putenv (var, val); |
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1706
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392 else |
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393 error ("putenv: second argument should be a string"); |
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394 } |
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395 else |
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396 error ("putenv: first argument should be a string"); |
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397 } |
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398 else |
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399 print_usage ("putenv"); |
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400 |
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401 return retval; |
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402 } |
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403 |
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3372
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404 // XXX FIXME XXX -- perhaps kbhit should also be able to print a prompt? |
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405 |
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3657
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406 DEFUN (kbhit, args, , |
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3372
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407 "-*- texinfo -*-\n\ |
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408 @deftypefn {Built-in Function} {} kbhit ()\n\ |
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3657
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409 Read a single keystroke from the keyboard. If called with one\n\ |
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410 argument, don't wait for a keypress. For example,\n\ |
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3372
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411 \n\ |
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412 @example\n\ |
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413 x = kbhit ();\n\ |
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414 @end example\n\ |
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415 \n\ |
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416 @noindent\n\ |
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417 will set @var{x} to the next character typed at the keyboard as soon as\n\ |
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418 it is typed.\n\ |
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3657
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419 \n\ |
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420 @example\n\ |
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421 x = kbhit (1);\n\ |
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422 @end example\n\ |
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423 \n\ |
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424 @noindent\n\ |
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425 identical to the above example, but don't wait for a keypress,\n\ |
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426 returning the empty string if no key is available.\n\ |
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3372
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427 @end deftypefn") |
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529
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428 { |
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2086
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429 octave_value_list retval; |
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529
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430 |
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1358
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431 // XXX FIXME XXX -- add timeout and default value args? |
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529
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432 |
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433 if (interactive) |
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434 { |
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3658
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435 int c = kbhit (args.length () == 0); |
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3657
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436 |
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3658
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437 if (c == -1) |
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438 c = 0; |
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3657
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439 |
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529
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440 char *s = new char [2]; |
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441 s[0] = c; |
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442 s[1] = '\0'; |
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443 retval = s; |
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444 } |
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445 |
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446 return retval; |
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447 } |
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448 |
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1957
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449 DEFUN (pause, args, , |
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3301
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450 "-*- texinfo -*-\n\ |
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451 @deftypefn {Built-in Function} {} pause (@var{seconds})\n\ |
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452 Suspend the execution of the program. If invoked without any arguments,\n\ |
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453 Octave waits until you type a character. With a numeric argument, it\n\ |
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454 pauses for the given number of seconds. For example, the following\n\ |
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455 statement prints a message and then waits 5 seconds before clearing the\n\ |
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456 screen.\n\ |
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457 \n\ |
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458 @example\n\ |
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459 @group\n\ |
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460 fprintf (stderr, \"wait please...\n\");\n\ |
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461 pause (5);\n\ |
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462 clc;\n\ |
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463 @end group\n\ |
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464 @end example\n\ |
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465 @end deftypefn") |
|
529
|
466 { |
|
2086
|
467 octave_value_list retval; |
|
529
|
468 |
|
|
469 int nargin = args.length (); |
|
|
470 |
|
712
|
471 if (! (nargin == 0 || nargin == 1)) |
|
529
|
472 { |
|
|
473 print_usage ("pause"); |
|
|
474 return retval; |
|
|
475 } |
|
|
476 |
|
1579
|
477 if (nargin == 1) |
|
529
|
478 { |
|
1579
|
479 double dval = args(0).double_value (); |
|
636
|
480 |
|
1579
|
481 if (! error_state) |
|
|
482 { |
|
|
483 if (xisnan (dval)) |
|
|
484 warning ("pause: NaN is an invalid delay"); |
|
2630
|
485 else if (xisinf (dval)) |
|
3234
|
486 { |
|
|
487 flush_octave_stdout (); |
|
|
488 kbhit (); |
|
|
489 } |
|
1579
|
490 else |
|
|
491 { |
|
|
492 int delay = NINT (dval); |
|
|
493 if (delay > 0) |
|
|
494 sleep (delay); |
|
|
495 } |
|
529
|
496 } |
|
|
497 } |
|
1579
|
498 else |
|
3234
|
499 { |
|
|
500 flush_octave_stdout (); |
|
|
501 kbhit (); |
|
|
502 } |
|
2630
|
503 |
|
|
504 return retval; |
|
|
505 } |
|
|
506 |
|
|
507 DEFUN (sleep, args, , |
|
3301
|
508 "-*- texinfo -*-\n\ |
|
|
509 @deftypefn {Built-in Function} {} sleep (@var{seconds})\n\ |
|
|
510 Suspend the execution of the program for the given number of seconds.\n\ |
|
|
511 @end deftypefn") |
|
2630
|
512 { |
|
|
513 octave_value_list retval; |
|
|
514 |
|
|
515 if (args.length () == 1) |
|
1579
|
516 { |
|
2630
|
517 double dval = args(0).double_value (); |
|
|
518 |
|
|
519 if (! error_state) |
|
|
520 { |
|
|
521 if (xisnan (dval)) |
|
|
522 warning ("sleep: NaN is an invalid delay"); |
|
|
523 else |
|
|
524 { |
|
|
525 int delay = NINT (dval); |
|
|
526 if (delay > 0) |
|
|
527 sleep (delay); |
|
|
528 } |
|
|
529 } |
|
1579
|
530 } |
|
2630
|
531 else |
|
|
532 print_usage ("sleep"); |
|
|
533 |
|
|
534 return retval; |
|
|
535 } |
|
|
536 |
|
|
537 DEFUN (usleep, args, , |
|
3301
|
538 "-*- texinfo -*-\n\ |
|
|
539 @deftypefn {Built-in Function} {} usleep (@var{microseconds})\n\ |
|
|
540 Suspend the execution of the program for the given number of\n\ |
|
|
541 microseconds. On systems where it is not possible to sleep for periods\n\ |
|
|
542 of time less than one second, @code{usleep} will pause the execution for\n\ |
|
|
543 @code{round (@var{microseconds} / 1e6)} seconds.\n\ |
|
|
544 @end deftypefn") |
|
2630
|
545 { |
|
|
546 octave_value_list retval; |
|
|
547 |
|
|
548 if (args.length () == 1) |
|
|
549 { |
|
|
550 double dval = args(0).double_value (); |
|
|
551 |
|
|
552 if (! error_state) |
|
|
553 { |
|
|
554 if (xisnan (dval)) |
|
|
555 warning ("usleep: NaN is an invalid delay"); |
|
|
556 else |
|
|
557 { |
|
|
558 int delay = NINT (dval); |
|
2631
|
559 |
|
2630
|
560 if (delay > 0) |
|
3308
|
561 octave_usleep (delay); |
|
2630
|
562 } |
|
|
563 } |
|
|
564 } |
|
|
565 else |
|
|
566 print_usage ("usleep"); |
|
529
|
567 |
|
|
568 return retval; |
|
|
569 } |
|
|
570 |
|
862
|
571 // XXX FIXME XXX -- maybe this should only return 1 if IEEE floating |
|
|
572 // point functions really work. |
|
|
573 |
|
1957
|
574 DEFUN (isieee, , , |
|
3301
|
575 "-*- texinfo -*-\n\ |
|
|
576 @deftypefn {Built-in Function} {} isieee ()\n\ |
|
|
577 Return 1 if your computer claims to conform to the IEEE standard for\n\ |
|
|
578 floating point calculations.\n\ |
|
|
579 @end deftypefn") |
|
862
|
580 { |
|
2317
|
581 oct_mach_info::float_format flt_fmt = |
|
|
582 oct_mach_info::native_float_format (); |
|
|
583 |
|
2800
|
584 return static_cast<double> (flt_fmt == oct_mach_info::ieee_little_endian |
|
|
585 || flt_fmt == oct_mach_info::ieee_big_endian); |
|
862
|
586 } |
|
|
587 |
|
1957
|
588 DEFUN (tilde_expand, args, , |
|
3301
|
589 "-*- texinfo -*-\n\ |
|
|
590 @deftypefn {Built-in Function} {} tilde_expand (@var{string})\n\ |
|
|
591 Performs tilde expansion on @var{string}. If @var{string} begins with a\n\ |
|
|
592 tilde character, (@samp{~}), all of the characters preceding the first\n\ |
|
|
593 slash (or all characters, if there is no slash) are treated as a\n\ |
|
|
594 possible user name, and the tilde and the following characters up to the\n\ |
|
|
595 slash are replaced by the home directory of the named user. If the\n\ |
|
|
596 tilde is followed immediately by a slash, the tilde is replaced by the\n\ |
|
|
597 home directory of the user running Octave. For example,\n\ |
|
|
598 \n\ |
|
|
599 @example\n\ |
|
|
600 @group\n\ |
|
|
601 tilde_expand (\"~joeuser/bin\")\n\ |
|
|
602 @result{} \"/home/joeuser/bin\"\n\ |
|
|
603 tilde_expand (\"~/bin\")\n\ |
|
|
604 @result{} \"/home/jwe/bin\"\n\ |
|
|
605 @end group\n\ |
|
|
606 @end example\n\ |
|
|
607 @end deftypefn") |
|
1750
|
608 { |
|
2086
|
609 octave_value_list retval; |
|
1750
|
610 |
|
|
611 int nargin = args.length (); |
|
|
612 |
|
|
613 if (nargin == 1) |
|
2926
|
614 retval = file_ops::tilde_expand (args(0).all_strings ()); |
|
1750
|
615 else |
|
|
616 print_usage ("tilde_expand"); |
|
|
617 |
|
|
618 return retval; |
|
|
619 } |
|
|
620 |
|
2552
|
621 #if defined (__EMX__) && defined (OS2) |
|
|
622 |
|
|
623 DEFUN_TEXT (extproc, , , |
|
2926
|
624 "extproc: ignored by Octave") |
|
2552
|
625 { |
|
|
626 return octave_value_list (); |
|
|
627 } |
|
|
628 |
|
|
629 DEFALIAS (EXTPROC, extproc); |
|
|
630 |
|
|
631 #endif |
|
|
632 |
|
529
|
633 /* |
|
1
|
634 ;;; Local Variables: *** |
|
|
635 ;;; mode: C++ *** |
|
|
636 ;;; End: *** |
|
|
637 */ |
