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1
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1 /* |
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2 |
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2847
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3 Copyright (C) 1996, 1997 John W. Eaton |
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1
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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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1315
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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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1463
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55 #if defined (HAVE_FLOATINGPOINT_H) |
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56 #include <floatingpoint.h> |
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57 #endif |
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58 |
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2508
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59 #if defined (HAVE_IEEEFP_H) |
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60 #include <ieeefp.h> |
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61 #endif |
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62 |
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1463
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63 #if !defined (HAVE_GETHOSTNAME) && defined (HAVE_SYS_UTSNAME_H) |
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64 #include <sys/utsname.h> |
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65 #endif |
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66 |
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2926
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67 #include "cmd-edit.h" |
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68 #include "file-ops.h" |
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2893
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69 #include "lo-mappers.h" |
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2317
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70 #include "mach-info.h" |
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2926
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71 #include "oct-env.h" |
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1769
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72 |
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1352
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73 #include "defun.h" |
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74 #include "error.h" |
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529
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75 #include "input.h" |
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1755
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76 #include "oct-obj.h" |
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2370
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77 #include "ov.h" |
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3234
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78 #include "pager.h" |
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1352
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79 #include "sysdep.h" |
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1755
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80 #include "toplev.h" |
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529
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81 #include "utils.h" |
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82 |
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83 #ifndef STDIN_FILENO |
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84 #define STDIN_FILENO 1 |
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85 #endif |
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444
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86 |
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2508
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87 #if defined (__386BSD__) || defined (__FreeBSD__) |
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88 static void |
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89 BSD_init (void) |
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90 { |
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91 #if defined (HAVE_FLOATINGPOINT_H) |
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92 // Disable trapping on common exceptions. |
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93 fpsetmask (~(FP_X_OFL|FP_X_INV|FP_X_DZ|FP_X_DNML|FP_X_UFL|FP_X_IMP)); |
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94 #endif |
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95 } |
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96 #endif |
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97 |
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2610
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98 #if defined (NeXT) |
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1
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99 extern "C" |
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100 { |
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101 typedef void (*_cplus_fcn_int) (int); |
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102 extern void (*malloc_error (_cplus_fcn_int)) (int); |
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103 } |
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104 |
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105 static void |
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106 malloc_handler (int code) |
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107 { |
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108 if (code == 5) |
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217
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109 warning ("hopefully recoverable malloc error: freeing wild pointer"); |
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1
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110 else |
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2926
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111 panic ("probably irrecoverable malloc error: code %d", code); |
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1
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112 } |
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113 |
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114 static void |
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115 NeXT_init (void) |
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116 { |
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117 malloc_error (malloc_handler); |
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118 } |
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119 #endif |
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120 |
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2546
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121 #if defined (__EMX__) |
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122 OS2_init (void) |
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123 { |
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124 _control87 ((EM_INVALID | EM_DENORMAL | EM_ZERODIVIDE | EM_OVERFLOW |
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125 | EM_UNDERFLOW | EM_INEXACT), MCW_EM); |
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126 } |
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127 #endif |
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128 |
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2508
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129 #if defined (SCO) |
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130 static void |
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131 SCO_init (void) |
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132 { |
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133 #if defined (HAVE_IEEEFP_H) |
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134 // Disable trapping on common exceptions. |
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135 fpsetmask (~(FP_X_OFL|FP_X_INV|FP_X_DZ|FP_X_DNML|FP_X_UFL|FP_X_IMP)); |
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136 #endif |
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137 } |
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138 #endif |
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139 |
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1
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140 void |
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141 sysdep_init (void) |
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142 { |
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959
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143 #if defined (__386BSD__) || defined (__FreeBSD__) |
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2508
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144 BSD_init (); |
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2610
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145 #elif defined (NeXT) |
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1
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146 NeXT_init (); |
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2610
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147 #elif defined (__EMX__) |
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2546
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148 OS2_init (); |
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2508
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149 #elif defined (SCO) |
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150 SCO_init (); |
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1
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151 #endif |
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444
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152 |
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153 octave_ieee_init (); |
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1
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154 } |
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155 |
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767
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156 // Set terminal in raw mode. From less-177. |
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157 // |
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158 // Change terminal to "raw mode", or restore to "normal" mode. |
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159 // "Raw mode" means |
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160 // 1. An outstanding read will complete on receipt of a single keystroke. |
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161 // 2. Input is not echoed. |
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162 // 3. On output, \n is mapped to \r\n. |
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163 // 4. \t is NOT expanded into spaces. |
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164 // 5. Signal-causing characters such as ctrl-C (interrupt), |
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165 // etc. are NOT disabled. |
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166 // It doesn't matter whether an input \n is mapped to \r, or vice versa. |
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167 |
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529
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168 void |
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169 raw_mode (int on) |
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170 { |
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171 static int curr_on = 0; |
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172 |
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173 int tty_fd = STDIN_FILENO; |
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174 if (! isatty (tty_fd)) |
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175 { |
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176 if (interactive) |
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177 error ("stdin is not a tty!"); |
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178 return; |
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179 } |
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180 |
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181 if (on == curr_on) |
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182 return; |
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183 |
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184 #if defined (HAVE_TERMIOS_H) |
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185 { |
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186 struct termios s; |
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187 static struct termios save_term; |
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188 |
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189 if (on) |
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190 { |
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1358
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191 // Get terminal modes. |
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529
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192 |
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193 tcgetattr (tty_fd, &s); |
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194 |
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1358
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195 // Save modes and set certain variables dependent on modes. |
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529
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196 |
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197 save_term = s; |
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198 // ospeed = s.c_cflag & CBAUD; |
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199 // erase_char = s.c_cc[VERASE]; |
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200 // kill_char = s.c_cc[VKILL]; |
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201 |
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1358
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202 // Set the modes to the way we want them. |
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529
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203 |
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204 s.c_lflag &= ~(ICANON|ECHO|ECHOE|ECHOK|ECHONL); |
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205 s.c_oflag |= (OPOST|ONLCR); |
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206 #if defined (OCRNL) |
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207 s.c_oflag &= ~(OCRNL); |
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208 #endif |
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209 #if defined (ONOCR) |
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210 s.c_oflag &= ~(ONOCR); |
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211 #endif |
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212 #if defined (ONLRET) |
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213 s.c_oflag &= ~(ONLRET); |
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214 #endif |
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215 s.c_cc[VMIN] = 1; |
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216 s.c_cc[VTIME] = 0; |
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217 } |
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218 else |
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219 { |
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1358
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220 // Restore saved modes. |
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221 |
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529
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222 s = save_term; |
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223 } |
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224 tcsetattr (tty_fd, TCSAFLUSH, &s); |
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225 } |
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226 #elif defined (HAVE_TERMIO_H) |
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227 { |
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228 struct termio s; |
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229 static struct termio save_term; |
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230 |
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231 if (on) |
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232 { |
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1358
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233 // Get terminal modes. |
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529
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234 |
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235 ioctl (tty_fd, TCGETA, &s); |
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236 |
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1358
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237 // Save modes and set certain variables dependent on modes. |
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529
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238 |
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239 save_term = s; |
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240 // ospeed = s.c_cflag & CBAUD; |
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241 // erase_char = s.c_cc[VERASE]; |
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242 // kill_char = s.c_cc[VKILL]; |
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243 |
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1358
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244 // Set the modes to the way we want them. |
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529
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245 |
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246 s.c_lflag &= ~(ICANON|ECHO|ECHOE|ECHOK|ECHONL); |
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247 s.c_oflag |= (OPOST|ONLCR); |
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248 #if defined (OCRNL) |
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249 s.c_oflag &= ~(OCRNL); |
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250 #endif |
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251 #if defined (ONOCR) |
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252 s.c_oflag &= ~(ONOCR); |
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253 #endif |
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254 #if defined (ONLRET) |
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255 s.c_oflag &= ~(ONLRET); |
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256 #endif |
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257 s.c_cc[VMIN] = 1; |
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258 s.c_cc[VTIME] = 0; |
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259 } |
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260 else |
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261 { |
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1358
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262 // Restore saved modes. |
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263 |
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529
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264 s = save_term; |
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265 } |
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266 ioctl (tty_fd, TCSETAW, &s); |
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267 } |
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268 #elif defined (HAVE_SGTTY_H) |
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269 { |
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270 struct sgttyb s; |
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271 static struct sgttyb save_term; |
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272 |
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273 if (on) |
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274 { |
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1358
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275 // Get terminal modes. |
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529
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276 |
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277 ioctl (tty_fd, TIOCGETP, &s); |
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278 |
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1358
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279 // Save modes and set certain variables dependent on modes. |
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529
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280 |
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281 save_term = s; |
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282 // ospeed = s.sg_ospeed; |
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283 // erase_char = s.sg_erase; |
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284 // kill_char = s.sg_kill; |
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285 |
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1358
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286 // Set the modes to the way we want them. |
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529
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287 |
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288 s.sg_flags |= CBREAK; |
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289 s.sg_flags &= ~(ECHO); |
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290 } |
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291 else |
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292 { |
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1358
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293 // Restore saved modes. |
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294 |
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529
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295 s = save_term; |
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296 } |
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297 ioctl (tty_fd, TIOCSETN, &s); |
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298 } |
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299 #else |
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300 LOSE! LOSE! |
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301 #endif |
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302 |
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303 curr_on = on; |
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304 } |
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305 |
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767
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306 // Read one character from the terminal. |
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307 |
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529
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308 int |
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309 kbhit (void) |
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310 { |
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311 int c; |
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312 raw_mode (1); |
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313 c = cin.get (); |
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314 raw_mode (0); |
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315 return c; |
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316 } |
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317 |
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1957
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318 DEFUN (clc, , , |
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529
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319 "clc (): clear screen") |
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320 { |
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2926
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321 command_editor::clear_screen (); |
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529
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322 |
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2926
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323 return octave_value_list (); |
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529
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324 } |
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325 |
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549
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326 DEFALIAS (home, clc); |
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327 |
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1957
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328 DEFUN (getenv, args, , |
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529
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329 "getenv (STRING): get environment variable values") |
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330 { |
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2086
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331 octave_value_list retval; |
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529
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332 |
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333 int nargin = args.length (); |
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334 |
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712
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335 if (nargin == 1) |
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529
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336 { |
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2926
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337 string name = args(0).string_value (); |
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636
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338 |
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339 if (! error_state) |
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2926
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340 retval = octave_env::getenv (name); |
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529
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341 } |
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342 else |
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343 print_usage ("getenv"); |
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344 |
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345 return retval; |
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346 } |
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347 |
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1957
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348 DEFUN (putenv, args, , |
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1706
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349 "putenv (VAR, VALUE): define environment variable VAR=VALUE") |
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350 { |
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2086
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351 octave_value_list retval; |
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1706
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352 |
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353 int nargin = args.length (); |
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354 |
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355 if (nargin == 2) |
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356 { |
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1755
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357 string var = args(0).string_value (); |
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1706
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358 |
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359 if (! error_state) |
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360 { |
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1755
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361 string val = args(1).string_value (); |
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1706
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362 |
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363 if (! error_state) |
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2926
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364 octave_env::putenv (var, val); |
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1706
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365 else |
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366 error ("putenv: second argument should be a string"); |
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367 } |
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368 else |
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369 error ("putenv: first argument should be a string"); |
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370 } |
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371 else |
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372 print_usage ("putenv"); |
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373 |
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374 return retval; |
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375 } |
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376 |
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1957
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377 DEFUN (kbhit, , , |
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529
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378 "kbhit: get a single character from the terminal") |
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379 { |
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2086
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380 octave_value_list retval; |
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529
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381 |
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1358
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382 // XXX FIXME XXX -- add timeout and default value args? |
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529
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383 |
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384 if (interactive) |
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385 { |
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386 int c = kbhit (); |
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387 char *s = new char [2]; |
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388 s[0] = c; |
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389 s[1] = '\0'; |
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390 retval = s; |
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391 } |
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392 |
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393 return retval; |
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394 } |
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395 |
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1957
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396 DEFUN (pause, args, , |
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529
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397 "pause (seconds): suspend program execution") |
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398 { |
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2086
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399 octave_value_list retval; |
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529
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400 |
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401 int nargin = args.length (); |
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402 |
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712
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403 if (! (nargin == 0 || nargin == 1)) |
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529
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404 { |
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405 print_usage ("pause"); |
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406 return retval; |
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407 } |
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408 |
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1579
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409 if (nargin == 1) |
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529
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410 { |
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1579
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411 double dval = args(0).double_value (); |
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636
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412 |
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1579
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413 if (! error_state) |
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414 { |
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415 if (xisnan (dval)) |
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416 warning ("pause: NaN is an invalid delay"); |
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2630
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417 else if (xisinf (dval)) |
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3234
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418 { |
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419 flush_octave_stdout (); |
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420 kbhit (); |
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421 } |
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1579
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422 else |
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423 { |
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424 int delay = NINT (dval); |
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425 if (delay > 0) |
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426 sleep (delay); |
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427 } |
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529
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428 } |
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429 } |
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1579
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430 else |
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3234
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431 { |
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432 flush_octave_stdout (); |
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433 kbhit (); |
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434 } |
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2630
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435 |
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436 return retval; |
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437 } |
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438 |
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439 DEFUN (sleep, args, , |
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440 "sleep (seconds): suspend program execution") |
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441 { |
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442 octave_value_list retval; |
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443 |
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444 if (args.length () == 1) |
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1579
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445 { |
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2630
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446 double dval = args(0).double_value (); |
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447 |
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448 if (! error_state) |
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449 { |
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450 if (xisnan (dval)) |
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451 warning ("sleep: NaN is an invalid delay"); |
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452 else |
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453 { |
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454 int delay = NINT (dval); |
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455 if (delay > 0) |
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456 sleep (delay); |
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457 } |
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458 } |
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1579
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459 } |
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2630
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460 else |
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461 print_usage ("sleep"); |
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462 |
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463 return retval; |
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464 } |
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465 |
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466 DEFUN (usleep, args, , |
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467 "usleep (microseconds): suspend program execution") |
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468 { |
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469 octave_value_list retval; |
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470 |
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471 if (args.length () == 1) |
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472 { |
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473 double dval = args(0).double_value (); |
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474 |
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475 if (! error_state) |
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476 { |
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477 if (xisnan (dval)) |
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478 warning ("usleep: NaN is an invalid delay"); |
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|
479 else |
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480 { |
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2631
|
481 #if defined (HAVE_USLEEP) |
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2630
|
482 int delay = NINT (dval); |
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2631
|
483 |
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2630
|
484 if (delay > 0) |
|
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485 usleep (delay); |
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|
486 #else |
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2631
|
487 int delay = NINT (dval / 1e6); |
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2630
|
488 |
|
2631
|
489 if (delay > 0) |
|
|
490 sleep (delay); |
|
2630
|
491 #endif |
|
|
492 } |
|
|
493 } |
|
|
494 } |
|
|
495 else |
|
|
496 print_usage ("usleep"); |
|
529
|
497 |
|
|
498 return retval; |
|
|
499 } |
|
|
500 |
|
862
|
501 // XXX FIXME XXX -- maybe this should only return 1 if IEEE floating |
|
|
502 // point functions really work. |
|
|
503 |
|
1957
|
504 DEFUN (isieee, , , |
|
862
|
505 "isieee (): return 1 if host uses IEEE floating point") |
|
|
506 { |
|
2317
|
507 oct_mach_info::float_format flt_fmt = |
|
|
508 oct_mach_info::native_float_format (); |
|
|
509 |
|
2800
|
510 return static_cast<double> (flt_fmt == oct_mach_info::ieee_little_endian |
|
|
511 || flt_fmt == oct_mach_info::ieee_big_endian); |
|
862
|
512 } |
|
|
513 |
|
1957
|
514 DEFUN (tilde_expand, args, , |
|
1750
|
515 "tilde_expand (STRING): perform tilde expansion on STRING") |
|
|
516 { |
|
2086
|
517 octave_value_list retval; |
|
1750
|
518 |
|
|
519 int nargin = args.length (); |
|
|
520 |
|
|
521 if (nargin == 1) |
|
2926
|
522 retval = file_ops::tilde_expand (args(0).all_strings ()); |
|
1750
|
523 else |
|
|
524 print_usage ("tilde_expand"); |
|
|
525 |
|
|
526 return retval; |
|
|
527 } |
|
|
528 |
|
2552
|
529 #if defined (__EMX__) && defined (OS2) |
|
|
530 |
|
|
531 DEFUN_TEXT (extproc, , , |
|
2926
|
532 "extproc: ignored by Octave") |
|
2552
|
533 { |
|
|
534 return octave_value_list (); |
|
|
535 } |
|
|
536 |
|
|
537 DEFALIAS (EXTPROC, extproc); |
|
|
538 |
|
|
539 #endif |
|
|
540 |
|
529
|
541 /* |
|
1
|
542 ;;; Local Variables: *** |
|
|
543 ;;; mode: C++ *** |
|
|
544 ;;; End: *** |
|
|
545 */ |
