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1 /* |
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2 |
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2847
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3 Copyright (C) 1996, 1997 John W. Eaton |
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4 |
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5 This file is part of Octave. |
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6 |
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7 Octave is free software; you can redistribute it and/or modify it |
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8 under the terms of the GNU General Public License as published by the |
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9 Free Software Foundation; either version 2, or (at your option) any |
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10 later version. |
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11 |
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12 Octave is distributed in the hope that it will be useful, but WITHOUT |
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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15 for more details. |
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16 |
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17 You should have received a copy of the GNU General Public License |
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18 along with Octave; see the file COPYING. If not, write to the Free |
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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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1
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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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1728
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34 #include <string> |
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35 |
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1742
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36 #include <iostream.h> |
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37 |
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1350
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38 #ifdef HAVE_UNISTD_H |
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2442
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39 #ifdef HAVE_SYS_TYPES_H |
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529
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40 #include <sys/types.h> |
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2442
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41 #endif |
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529
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42 #include <unistd.h> |
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43 #endif |
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1
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44 |
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1430
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45 #if defined (HAVE_TERMIOS_H) |
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46 #include <termios.h> |
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47 #elif defined (HAVE_TERMIO_H) |
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48 #include <termio.h> |
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49 #elif defined (HAVE_SGTTY_H) |
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50 #include <sgtty.h> |
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51 #else |
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52 LOSE! LOSE! |
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53 #endif |
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54 |
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3248
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55 #if defined (HAVE_SYS_IOCTL_H) |
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56 #include <sys/ioctl.h> |
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57 #endif |
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58 |
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1463
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59 #if defined (HAVE_FLOATINGPOINT_H) |
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60 #include <floatingpoint.h> |
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61 #endif |
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62 |
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2508
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63 #if defined (HAVE_IEEEFP_H) |
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64 #include <ieeefp.h> |
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65 #endif |
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66 |
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1463
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67 #if !defined (HAVE_GETHOSTNAME) && defined (HAVE_SYS_UTSNAME_H) |
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68 #include <sys/utsname.h> |
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69 #endif |
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70 |
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2926
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71 #include "cmd-edit.h" |
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72 #include "file-ops.h" |
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2893
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73 #include "lo-mappers.h" |
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2317
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74 #include "mach-info.h" |
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2926
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75 #include "oct-env.h" |
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1769
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76 |
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1352
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77 #include "defun.h" |
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78 #include "error.h" |
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529
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79 #include "input.h" |
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1755
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80 #include "oct-obj.h" |
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2370
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81 #include "ov.h" |
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3234
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82 #include "pager.h" |
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1352
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83 #include "sysdep.h" |
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1755
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84 #include "toplev.h" |
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529
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85 #include "utils.h" |
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86 |
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87 #ifndef STDIN_FILENO |
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88 #define STDIN_FILENO 1 |
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89 #endif |
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444
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90 |
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2508
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91 #if defined (__386BSD__) || defined (__FreeBSD__) |
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92 static void |
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93 BSD_init (void) |
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94 { |
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95 #if defined (HAVE_FLOATINGPOINT_H) |
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96 // Disable trapping on common exceptions. |
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97 fpsetmask (~(FP_X_OFL|FP_X_INV|FP_X_DZ|FP_X_DNML|FP_X_UFL|FP_X_IMP)); |
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98 #endif |
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99 } |
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100 #endif |
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101 |
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2610
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102 #if defined (NeXT) |
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103 extern "C" |
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104 { |
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105 typedef void (*_cplus_fcn_int) (int); |
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106 extern void (*malloc_error (_cplus_fcn_int)) (int); |
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107 } |
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108 |
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109 static void |
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110 malloc_handler (int code) |
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111 { |
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112 if (code == 5) |
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217
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113 warning ("hopefully recoverable malloc error: freeing wild pointer"); |
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114 else |
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2926
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115 panic ("probably irrecoverable malloc error: code %d", code); |
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116 } |
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117 |
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118 static void |
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119 NeXT_init (void) |
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120 { |
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121 malloc_error (malloc_handler); |
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122 } |
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3333
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123 #endif |
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124 |
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2546
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125 #if defined (__EMX__) |
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126 OS2_init (void) |
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127 { |
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128 _control87 ((EM_INVALID | EM_DENORMAL | EM_ZERODIVIDE | EM_OVERFLOW |
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129 | EM_UNDERFLOW | EM_INEXACT), MCW_EM); |
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130 } |
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131 #endif |
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132 |
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2508
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133 #if defined (SCO) |
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134 static void |
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135 SCO_init (void) |
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136 { |
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137 #if defined (HAVE_IEEEFP_H) |
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138 // Disable trapping on common exceptions. |
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139 fpsetmask (~(FP_X_OFL|FP_X_INV|FP_X_DZ|FP_X_DNML|FP_X_UFL|FP_X_IMP)); |
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140 #endif |
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141 } |
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142 #endif |
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143 |
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1
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144 void |
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145 sysdep_init (void) |
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146 { |
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959
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147 #if defined (__386BSD__) || defined (__FreeBSD__) |
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2508
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148 BSD_init (); |
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2610
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149 #elif defined (NeXT) |
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1
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150 NeXT_init (); |
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2610
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151 #elif defined (__EMX__) |
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2546
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152 OS2_init (); |
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2508
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153 #elif defined (SCO) |
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154 SCO_init (); |
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1
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155 #endif |
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444
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156 |
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157 octave_ieee_init (); |
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1
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158 } |
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159 |
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767
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160 // Set terminal in raw mode. From less-177. |
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161 // |
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162 // Change terminal to "raw mode", or restore to "normal" mode. |
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163 // "Raw mode" means |
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164 // 1. An outstanding read will complete on receipt of a single keystroke. |
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165 // 2. Input is not echoed. |
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166 // 3. On output, \n is mapped to \r\n. |
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167 // 4. \t is NOT expanded into spaces. |
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168 // 5. Signal-causing characters such as ctrl-C (interrupt), |
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169 // etc. are NOT disabled. |
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170 // It doesn't matter whether an input \n is mapped to \r, or vice versa. |
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171 |
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529
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172 void |
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173 raw_mode (int on) |
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174 { |
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175 static int curr_on = 0; |
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176 |
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177 int tty_fd = STDIN_FILENO; |
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178 if (! isatty (tty_fd)) |
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179 { |
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180 if (interactive) |
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181 error ("stdin is not a tty!"); |
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182 return; |
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183 } |
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184 |
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185 if (on == curr_on) |
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186 return; |
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187 |
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188 #if defined (HAVE_TERMIOS_H) |
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189 { |
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190 struct termios s; |
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191 static struct termios save_term; |
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192 |
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193 if (on) |
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194 { |
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1358
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195 // Get terminal modes. |
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529
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196 |
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197 tcgetattr (tty_fd, &s); |
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198 |
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1358
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199 // Save modes and set certain variables dependent on modes. |
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529
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200 |
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201 save_term = s; |
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202 // ospeed = s.c_cflag & CBAUD; |
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203 // erase_char = s.c_cc[VERASE]; |
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204 // kill_char = s.c_cc[VKILL]; |
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205 |
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1358
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206 // Set the modes to the way we want them. |
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529
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207 |
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208 s.c_lflag &= ~(ICANON|ECHO|ECHOE|ECHOK|ECHONL); |
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209 s.c_oflag |= (OPOST|ONLCR); |
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210 #if defined (OCRNL) |
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211 s.c_oflag &= ~(OCRNL); |
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212 #endif |
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213 #if defined (ONOCR) |
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214 s.c_oflag &= ~(ONOCR); |
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215 #endif |
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216 #if defined (ONLRET) |
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217 s.c_oflag &= ~(ONLRET); |
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218 #endif |
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219 s.c_cc[VMIN] = 1; |
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220 s.c_cc[VTIME] = 0; |
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221 } |
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222 else |
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223 { |
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1358
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224 // Restore saved modes. |
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225 |
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529
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226 s = save_term; |
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227 } |
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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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1358
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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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1358
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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] = 1; |
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262 s.c_cc[VTIME] = 0; |
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263 } |
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264 else |
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265 { |
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1358
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266 // Restore saved modes. |
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267 |
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529
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268 s = save_term; |
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269 } |
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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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1358
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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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1358
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290 // Set the modes to the way we want them. |
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529
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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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301 ioctl (tty_fd, TIOCSETN, &s); |
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302 } |
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303 #else |
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304 LOSE! LOSE! |
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305 #endif |
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306 |
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307 curr_on = on; |
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308 } |
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309 |
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767
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310 // Read one character from the terminal. |
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311 |
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529
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312 int |
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313 kbhit (void) |
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314 { |
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315 int c; |
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316 raw_mode (1); |
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317 c = cin.get (); |
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318 raw_mode (0); |
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319 return c; |
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320 } |
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321 |
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1957
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322 DEFUN (clc, , , |
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3332
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323 "-*- texinfo -*-\n\ |
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324 @deftypefn {Built-in Function} {} clc ()\n\ |
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325 @deftypefnx {Built-in Function} {} home ()\n\ |
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326 Clear the terminal screen and move the cursor to the upper left corner.\n\ |
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3333
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327 @end deftypefn") |
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529
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328 { |
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2926
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329 command_editor::clear_screen (); |
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529
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330 |
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2926
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331 return octave_value_list (); |
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529
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332 } |
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333 |
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549
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334 DEFALIAS (home, clc); |
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335 |
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1957
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336 DEFUN (getenv, args, , |
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3301
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337 "-*- texinfo -*-\n\ |
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338 @deftypefn {Built-in Function} {} getenv (@var{var})\n\ |
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339 Return the value of the environment variable @var{var}. For example,\n\ |
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340 \n\ |
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341 @example\n\ |
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342 getenv (\"PATH\")\n\ |
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343 @end example\n\ |
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344 \n\ |
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345 @noindent\n\ |
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346 returns a string containing the value of your path.\n\ |
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347 @end deftypefn") |
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529
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348 { |
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2086
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349 octave_value_list retval; |
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529
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350 |
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351 int nargin = args.length (); |
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352 |
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712
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353 if (nargin == 1) |
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529
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354 { |
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2926
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355 string name = args(0).string_value (); |
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636
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356 |
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357 if (! error_state) |
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2926
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358 retval = octave_env::getenv (name); |
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529
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359 } |
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360 else |
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361 print_usage ("getenv"); |
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362 |
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363 return retval; |
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364 } |
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365 |
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1957
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366 DEFUN (putenv, args, , |
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3301
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367 "-*- texinfo -*-\n\ |
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368 @deftypefn {Built-in Function} {} putenv (@var{var}, @var{value})\n\ |
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369 Set the value of the environment variable @var{var} to @var{value}.\n\ |
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370 @end deftypefn") |
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1706
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371 { |
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2086
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372 octave_value_list retval; |
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1706
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373 |
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374 int nargin = args.length (); |
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375 |
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376 if (nargin == 2) |
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377 { |
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1755
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378 string var = args(0).string_value (); |
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1706
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379 |
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380 if (! error_state) |
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381 { |
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1755
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382 string val = args(1).string_value (); |
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1706
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383 |
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384 if (! error_state) |
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2926
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385 octave_env::putenv (var, val); |
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1706
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386 else |
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387 error ("putenv: second argument should be a string"); |
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388 } |
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389 else |
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390 error ("putenv: first argument should be a string"); |
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391 } |
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392 else |
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393 print_usage ("putenv"); |
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394 |
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395 return retval; |
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396 } |
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397 |
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3372
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398 // XXX FIXME XXX -- perhaps kbhit should also be able to print a prompt? |
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399 |
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1957
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400 DEFUN (kbhit, , , |
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3372
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401 "-*- texinfo -*-\n\ |
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402 @deftypefn {Built-in Function} {} kbhit ()\n\ |
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403 Read a single keystroke from the keyboard. For example,\n\ |
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404 \n\ |
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405 @example\n\ |
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406 x = kbhit ();\n\ |
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407 @end example\n\ |
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408 \n\ |
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409 @noindent\n\ |
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410 will set @var{x} to the next character typed at the keyboard as soon as\n\ |
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411 it is typed.\n\ |
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412 @end deftypefn") |
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529
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413 { |
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2086
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414 octave_value_list retval; |
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529
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415 |
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1358
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416 // XXX FIXME XXX -- add timeout and default value args? |
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529
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417 |
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418 if (interactive) |
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419 { |
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420 int c = kbhit (); |
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421 char *s = new char [2]; |
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422 s[0] = c; |
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423 s[1] = '\0'; |
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424 retval = s; |
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425 } |
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426 |
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427 return retval; |
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428 } |
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429 |
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1957
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430 DEFUN (pause, args, , |
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3301
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431 "-*- texinfo -*-\n\ |
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432 @deftypefn {Built-in Function} {} pause (@var{seconds})\n\ |
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433 Suspend the execution of the program. If invoked without any arguments,\n\ |
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434 Octave waits until you type a character. With a numeric argument, it\n\ |
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435 pauses for the given number of seconds. For example, the following\n\ |
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436 statement prints a message and then waits 5 seconds before clearing the\n\ |
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437 screen.\n\ |
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438 \n\ |
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439 @example\n\ |
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440 @group\n\ |
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441 fprintf (stderr, \"wait please...\n\");\n\ |
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442 pause (5);\n\ |
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443 clc;\n\ |
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444 @end group\n\ |
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445 @end example\n\ |
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446 @end deftypefn") |
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529
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447 { |
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2086
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448 octave_value_list retval; |
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529
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449 |
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450 int nargin = args.length (); |
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451 |
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712
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452 if (! (nargin == 0 || nargin == 1)) |
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529
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453 { |
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454 print_usage ("pause"); |
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455 return retval; |
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456 } |
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457 |
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1579
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458 if (nargin == 1) |
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529
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459 { |
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1579
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460 double dval = args(0).double_value (); |
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636
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461 |
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1579
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462 if (! error_state) |
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463 { |
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464 if (xisnan (dval)) |
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465 warning ("pause: NaN is an invalid delay"); |
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2630
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466 else if (xisinf (dval)) |
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3234
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467 { |
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468 flush_octave_stdout (); |
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469 kbhit (); |
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470 } |
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1579
|
471 else |
|
|
472 { |
|
|
473 int delay = NINT (dval); |
|
|
474 if (delay > 0) |
|
|
475 sleep (delay); |
|
|
476 } |
|
529
|
477 } |
|
|
478 } |
|
1579
|
479 else |
|
3234
|
480 { |
|
|
481 flush_octave_stdout (); |
|
|
482 kbhit (); |
|
|
483 } |
|
2630
|
484 |
|
|
485 return retval; |
|
|
486 } |
|
|
487 |
|
|
488 DEFUN (sleep, args, , |
|
3301
|
489 "-*- texinfo -*-\n\ |
|
|
490 @deftypefn {Built-in Function} {} sleep (@var{seconds})\n\ |
|
|
491 Suspend the execution of the program for the given number of seconds.\n\ |
|
|
492 @end deftypefn") |
|
2630
|
493 { |
|
|
494 octave_value_list retval; |
|
|
495 |
|
|
496 if (args.length () == 1) |
|
1579
|
497 { |
|
2630
|
498 double dval = args(0).double_value (); |
|
|
499 |
|
|
500 if (! error_state) |
|
|
501 { |
|
|
502 if (xisnan (dval)) |
|
|
503 warning ("sleep: NaN is an invalid delay"); |
|
|
504 else |
|
|
505 { |
|
|
506 int delay = NINT (dval); |
|
|
507 if (delay > 0) |
|
|
508 sleep (delay); |
|
|
509 } |
|
|
510 } |
|
1579
|
511 } |
|
2630
|
512 else |
|
|
513 print_usage ("sleep"); |
|
|
514 |
|
|
515 return retval; |
|
|
516 } |
|
|
517 |
|
|
518 DEFUN (usleep, args, , |
|
3301
|
519 "-*- texinfo -*-\n\ |
|
|
520 @deftypefn {Built-in Function} {} usleep (@var{microseconds})\n\ |
|
|
521 Suspend the execution of the program for the given number of\n\ |
|
|
522 microseconds. On systems where it is not possible to sleep for periods\n\ |
|
|
523 of time less than one second, @code{usleep} will pause the execution for\n\ |
|
|
524 @code{round (@var{microseconds} / 1e6)} seconds.\n\ |
|
|
525 @end deftypefn") |
|
2630
|
526 { |
|
|
527 octave_value_list retval; |
|
|
528 |
|
|
529 if (args.length () == 1) |
|
|
530 { |
|
|
531 double dval = args(0).double_value (); |
|
|
532 |
|
|
533 if (! error_state) |
|
|
534 { |
|
|
535 if (xisnan (dval)) |
|
|
536 warning ("usleep: NaN is an invalid delay"); |
|
|
537 else |
|
|
538 { |
|
|
539 int delay = NINT (dval); |
|
2631
|
540 |
|
2630
|
541 if (delay > 0) |
|
3308
|
542 octave_usleep (delay); |
|
2630
|
543 } |
|
|
544 } |
|
|
545 } |
|
|
546 else |
|
|
547 print_usage ("usleep"); |
|
529
|
548 |
|
|
549 return retval; |
|
|
550 } |
|
|
551 |
|
862
|
552 // XXX FIXME XXX -- maybe this should only return 1 if IEEE floating |
|
|
553 // point functions really work. |
|
|
554 |
|
1957
|
555 DEFUN (isieee, , , |
|
3301
|
556 "-*- texinfo -*-\n\ |
|
|
557 @deftypefn {Built-in Function} {} isieee ()\n\ |
|
|
558 Return 1 if your computer claims to conform to the IEEE standard for\n\ |
|
|
559 floating point calculations.\n\ |
|
|
560 @end deftypefn") |
|
862
|
561 { |
|
2317
|
562 oct_mach_info::float_format flt_fmt = |
|
|
563 oct_mach_info::native_float_format (); |
|
|
564 |
|
2800
|
565 return static_cast<double> (flt_fmt == oct_mach_info::ieee_little_endian |
|
|
566 || flt_fmt == oct_mach_info::ieee_big_endian); |
|
862
|
567 } |
|
|
568 |
|
1957
|
569 DEFUN (tilde_expand, args, , |
|
3301
|
570 "-*- texinfo -*-\n\ |
|
|
571 @deftypefn {Built-in Function} {} tilde_expand (@var{string})\n\ |
|
|
572 Performs tilde expansion on @var{string}. If @var{string} begins with a\n\ |
|
|
573 tilde character, (@samp{~}), all of the characters preceding the first\n\ |
|
|
574 slash (or all characters, if there is no slash) are treated as a\n\ |
|
|
575 possible user name, and the tilde and the following characters up to the\n\ |
|
|
576 slash are replaced by the home directory of the named user. If the\n\ |
|
|
577 tilde is followed immediately by a slash, the tilde is replaced by the\n\ |
|
|
578 home directory of the user running Octave. For example,\n\ |
|
|
579 \n\ |
|
|
580 @example\n\ |
|
|
581 @group\n\ |
|
|
582 tilde_expand (\"~joeuser/bin\")\n\ |
|
|
583 @result{} \"/home/joeuser/bin\"\n\ |
|
|
584 tilde_expand (\"~/bin\")\n\ |
|
|
585 @result{} \"/home/jwe/bin\"\n\ |
|
|
586 @end group\n\ |
|
|
587 @end example\n\ |
|
|
588 @end deftypefn") |
|
1750
|
589 { |
|
2086
|
590 octave_value_list retval; |
|
1750
|
591 |
|
|
592 int nargin = args.length (); |
|
|
593 |
|
|
594 if (nargin == 1) |
|
2926
|
595 retval = file_ops::tilde_expand (args(0).all_strings ()); |
|
1750
|
596 else |
|
|
597 print_usage ("tilde_expand"); |
|
|
598 |
|
|
599 return retval; |
|
|
600 } |
|
|
601 |
|
2552
|
602 #if defined (__EMX__) && defined (OS2) |
|
|
603 |
|
|
604 DEFUN_TEXT (extproc, , , |
|
2926
|
605 "extproc: ignored by Octave") |
|
2552
|
606 { |
|
|
607 return octave_value_list (); |
|
|
608 } |
|
|
609 |
|
|
610 DEFALIAS (EXTPROC, extproc); |
|
|
611 |
|
|
612 #endif |
|
|
613 |
|
529
|
614 /* |
|
1
|
615 ;;; Local Variables: *** |
|
|
616 ;;; mode: C++ *** |
|
|
617 ;;; End: *** |
|
|
618 */ |
