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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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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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661
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23 /* |
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24 |
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25 The function gethostname was adapted from a similar function from GNU |
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26 Bash, the Bourne Again SHell, copyright (C) 1987, 1989, 1991 Free |
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27 Software Foundation, Inc. |
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28 |
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29 */ |
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30 |
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240
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31 #ifdef HAVE_CONFIG_H |
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1192
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32 #include <config.h> |
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1
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33 #endif |
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34 |
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1346
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35 #include <cfloat> |
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1343
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36 #include <cstddef> |
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1346
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37 #include <cstdio> |
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1343
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38 #include <cstdlib> |
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39 #include <cstring> |
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40 |
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1728
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41 #include <string> |
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42 |
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1742
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43 #include <iostream.h> |
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44 |
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1350
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45 #ifdef HAVE_UNISTD_H |
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2442
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46 #ifdef HAVE_SYS_TYPES_H |
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529
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47 #include <sys/types.h> |
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2442
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48 #endif |
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529
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49 #include <unistd.h> |
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50 #endif |
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1
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51 |
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1430
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52 #if defined (HAVE_TERMIOS_H) |
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53 #include <termios.h> |
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54 #elif defined (HAVE_TERMIO_H) |
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55 #include <termio.h> |
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56 #elif defined (HAVE_SGTTY_H) |
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57 #include <sgtty.h> |
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58 #else |
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59 LOSE! LOSE! |
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60 #endif |
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61 |
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1463
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62 #if defined (HAVE_FLOATINGPOINT_H) |
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63 #include <floatingpoint.h> |
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64 #endif |
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65 |
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2508
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66 #if defined (HAVE_IEEEFP_H) |
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67 #include <ieeefp.h> |
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68 #endif |
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69 |
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1463
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70 #if !defined (HAVE_GETHOSTNAME) && defined (HAVE_SYS_UTSNAME_H) |
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71 #include <sys/utsname.h> |
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72 #endif |
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73 |
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2926
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74 #include "cmd-edit.h" |
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75 #include "file-ops.h" |
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2893
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76 #include "lo-mappers.h" |
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2317
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77 #include "mach-info.h" |
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2926
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78 #include "oct-env.h" |
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1769
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79 #include "oct-math.h" |
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80 |
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1352
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81 #include "defun.h" |
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82 #include "error.h" |
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542
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83 #include "help.h" |
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529
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84 #include "input.h" |
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1755
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85 #include "oct-obj.h" |
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2370
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86 #include "ov.h" |
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1352
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87 #include "sysdep.h" |
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1755
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88 #include "toplev.h" |
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529
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89 #include "utils.h" |
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90 |
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91 #ifndef STDIN_FILENO |
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92 #define STDIN_FILENO 1 |
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93 #endif |
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444
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94 |
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2508
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95 #if defined (__386BSD__) || defined (__FreeBSD__) |
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96 static void |
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97 BSD_init (void) |
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98 { |
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99 #if defined (HAVE_FLOATINGPOINT_H) |
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100 // Disable trapping on common exceptions. |
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101 fpsetmask (~(FP_X_OFL|FP_X_INV|FP_X_DZ|FP_X_DNML|FP_X_UFL|FP_X_IMP)); |
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102 #endif |
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103 } |
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104 #endif |
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105 |
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2610
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106 #if defined (NeXT) |
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1
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107 extern "C" |
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108 { |
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109 typedef void (*_cplus_fcn_int) (int); |
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110 extern void (*malloc_error (_cplus_fcn_int)) (int); |
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111 } |
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112 |
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113 static void |
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114 malloc_handler (int code) |
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115 { |
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116 if (code == 5) |
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217
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117 warning ("hopefully recoverable malloc error: freeing wild pointer"); |
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118 else |
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2926
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119 panic ("probably irrecoverable malloc error: code %d", code); |
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1
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120 } |
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121 |
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122 static void |
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123 NeXT_init (void) |
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124 { |
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125 malloc_error (malloc_handler); |
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126 } |
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127 #endif |
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128 |
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2546
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129 #if defined (__EMX__) |
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130 OS2_init (void) |
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131 { |
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132 _control87 ((EM_INVALID | EM_DENORMAL | EM_ZERODIVIDE | EM_OVERFLOW |
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133 | EM_UNDERFLOW | EM_INEXACT), MCW_EM); |
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134 } |
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135 #endif |
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136 |
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2508
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137 #if defined (SCO) |
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138 static void |
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139 SCO_init (void) |
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140 { |
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141 #if defined (HAVE_IEEEFP_H) |
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142 // Disable trapping on common exceptions. |
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143 fpsetmask (~(FP_X_OFL|FP_X_INV|FP_X_DZ|FP_X_DNML|FP_X_UFL|FP_X_IMP)); |
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144 #endif |
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145 } |
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146 #endif |
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147 |
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505
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148 #if defined (EXCEPTION_IN_MATH) |
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149 extern "C" |
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150 int |
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151 matherr (struct exception *x) |
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152 { |
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1358
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153 // Possibly print our own message someday. Should probably be |
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154 // user-switchable. |
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505
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155 |
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156 switch (x->type) |
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157 { |
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158 case DOMAIN: |
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159 case SING: |
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160 case OVERFLOW: |
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161 case UNDERFLOW: |
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162 case TLOSS: |
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163 case PLOSS: |
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164 default: |
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165 break; |
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166 } |
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167 |
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1358
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168 // But don't print the system message. |
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505
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169 |
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170 return 1; |
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171 } |
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1466
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172 #endif |
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505
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173 |
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1
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174 void |
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175 sysdep_init (void) |
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176 { |
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959
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177 #if defined (__386BSD__) || defined (__FreeBSD__) |
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2508
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178 BSD_init (); |
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2610
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179 #elif defined (NeXT) |
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1
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180 NeXT_init (); |
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2610
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181 #elif defined (__EMX__) |
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2546
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182 OS2_init (); |
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2508
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183 #elif defined (SCO) |
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184 SCO_init (); |
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1
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185 #endif |
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444
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186 |
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187 octave_ieee_init (); |
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1
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188 } |
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189 |
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767
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190 // Set terminal in raw mode. From less-177. |
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191 // |
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192 // Change terminal to "raw mode", or restore to "normal" mode. |
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193 // "Raw mode" means |
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194 // 1. An outstanding read will complete on receipt of a single keystroke. |
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195 // 2. Input is not echoed. |
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196 // 3. On output, \n is mapped to \r\n. |
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197 // 4. \t is NOT expanded into spaces. |
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198 // 5. Signal-causing characters such as ctrl-C (interrupt), |
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199 // etc. are NOT disabled. |
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200 // It doesn't matter whether an input \n is mapped to \r, or vice versa. |
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201 |
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529
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202 void |
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203 raw_mode (int on) |
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204 { |
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205 static int curr_on = 0; |
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206 |
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207 int tty_fd = STDIN_FILENO; |
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208 if (! isatty (tty_fd)) |
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209 { |
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210 if (interactive) |
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211 error ("stdin is not a tty!"); |
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212 return; |
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213 } |
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214 |
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215 if (on == curr_on) |
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216 return; |
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217 |
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218 #if defined (HAVE_TERMIOS_H) |
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219 { |
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220 struct termios s; |
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221 static struct termios save_term; |
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222 |
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223 if (on) |
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224 { |
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1358
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225 // Get terminal modes. |
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529
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226 |
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227 tcgetattr (tty_fd, &s); |
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228 |
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1358
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229 // Save modes and set certain variables dependent on modes. |
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529
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230 |
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231 save_term = s; |
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232 // ospeed = s.c_cflag & CBAUD; |
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233 // erase_char = s.c_cc[VERASE]; |
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234 // kill_char = s.c_cc[VKILL]; |
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235 |
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1358
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236 // Set the modes to the way we want them. |
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529
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237 |
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238 s.c_lflag &= ~(ICANON|ECHO|ECHOE|ECHOK|ECHONL); |
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239 s.c_oflag |= (OPOST|ONLCR); |
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240 #if defined (OCRNL) |
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241 s.c_oflag &= ~(OCRNL); |
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242 #endif |
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243 #if defined (ONOCR) |
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244 s.c_oflag &= ~(ONOCR); |
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245 #endif |
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246 #if defined (ONLRET) |
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247 s.c_oflag &= ~(ONLRET); |
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248 #endif |
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249 s.c_cc[VMIN] = 1; |
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250 s.c_cc[VTIME] = 0; |
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251 } |
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252 else |
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253 { |
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1358
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254 // Restore saved modes. |
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255 |
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529
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256 s = save_term; |
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257 } |
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258 tcsetattr (tty_fd, TCSAFLUSH, &s); |
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259 } |
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260 #elif defined (HAVE_TERMIO_H) |
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261 { |
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262 struct termio s; |
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263 static struct termio save_term; |
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264 |
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265 if (on) |
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266 { |
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1358
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267 // Get terminal modes. |
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529
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268 |
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269 ioctl (tty_fd, TCGETA, &s); |
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270 |
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1358
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271 // Save modes and set certain variables dependent on modes. |
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529
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272 |
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273 save_term = s; |
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274 // ospeed = s.c_cflag & CBAUD; |
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275 // erase_char = s.c_cc[VERASE]; |
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276 // kill_char = s.c_cc[VKILL]; |
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277 |
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1358
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278 // Set the modes to the way we want them. |
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529
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279 |
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280 s.c_lflag &= ~(ICANON|ECHO|ECHOE|ECHOK|ECHONL); |
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281 s.c_oflag |= (OPOST|ONLCR); |
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282 #if defined (OCRNL) |
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283 s.c_oflag &= ~(OCRNL); |
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284 #endif |
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285 #if defined (ONOCR) |
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286 s.c_oflag &= ~(ONOCR); |
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287 #endif |
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288 #if defined (ONLRET) |
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289 s.c_oflag &= ~(ONLRET); |
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290 #endif |
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291 s.c_cc[VMIN] = 1; |
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292 s.c_cc[VTIME] = 0; |
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293 } |
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294 else |
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295 { |
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1358
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296 // Restore saved modes. |
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297 |
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529
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298 s = save_term; |
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299 } |
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300 ioctl (tty_fd, TCSETAW, &s); |
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301 } |
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302 #elif defined (HAVE_SGTTY_H) |
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303 { |
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304 struct sgttyb s; |
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305 static struct sgttyb save_term; |
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306 |
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307 if (on) |
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308 { |
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1358
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309 // Get terminal modes. |
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529
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310 |
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311 ioctl (tty_fd, TIOCGETP, &s); |
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312 |
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1358
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313 // Save modes and set certain variables dependent on modes. |
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529
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314 |
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315 save_term = s; |
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316 // ospeed = s.sg_ospeed; |
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317 // erase_char = s.sg_erase; |
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318 // kill_char = s.sg_kill; |
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319 |
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1358
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320 // Set the modes to the way we want them. |
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529
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321 |
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322 s.sg_flags |= CBREAK; |
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323 s.sg_flags &= ~(ECHO); |
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324 } |
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325 else |
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326 { |
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1358
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327 // Restore saved modes. |
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328 |
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529
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329 s = save_term; |
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330 } |
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331 ioctl (tty_fd, TIOCSETN, &s); |
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332 } |
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333 #else |
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334 LOSE! LOSE! |
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335 #endif |
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336 |
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337 curr_on = on; |
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338 } |
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339 |
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767
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340 // Read one character from the terminal. |
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341 |
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529
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342 int |
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343 kbhit (void) |
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344 { |
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345 int c; |
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346 raw_mode (1); |
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347 c = cin.get (); |
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348 raw_mode (0); |
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349 return c; |
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350 } |
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351 |
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1957
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352 DEFUN (clc, , , |
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529
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353 "clc (): clear screen") |
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354 { |
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2926
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355 command_editor::clear_screen (); |
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529
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356 |
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2926
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357 return octave_value_list (); |
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529
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358 } |
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359 |
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549
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360 DEFALIAS (home, clc); |
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361 |
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1957
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362 DEFUN (getenv, args, , |
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529
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363 "getenv (STRING): get environment variable values") |
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364 { |
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2086
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365 octave_value_list retval; |
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529
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366 |
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367 int nargin = args.length (); |
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368 |
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712
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369 if (nargin == 1) |
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529
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370 { |
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2926
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371 string name = args(0).string_value (); |
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636
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372 |
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373 if (! error_state) |
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2926
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374 retval = octave_env::getenv (name); |
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529
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375 } |
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376 else |
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377 print_usage ("getenv"); |
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378 |
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379 return retval; |
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380 } |
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381 |
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1957
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382 DEFUN (putenv, args, , |
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1706
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383 "putenv (VAR, VALUE): define environment variable VAR=VALUE") |
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384 { |
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2086
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385 octave_value_list retval; |
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1706
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386 |
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387 int nargin = args.length (); |
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388 |
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389 if (nargin == 2) |
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390 { |
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1755
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391 string var = args(0).string_value (); |
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1706
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392 |
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393 if (! error_state) |
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394 { |
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1755
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395 string val = args(1).string_value (); |
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1706
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396 |
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397 if (! error_state) |
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2926
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398 octave_env::putenv (var, val); |
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1706
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399 else |
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400 error ("putenv: second argument should be a string"); |
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401 } |
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402 else |
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403 error ("putenv: first argument should be a string"); |
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404 } |
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405 else |
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406 print_usage ("putenv"); |
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407 |
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408 return retval; |
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409 } |
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410 |
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1957
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411 DEFUN (kbhit, , , |
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529
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412 "kbhit: get a single character from the terminal") |
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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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529
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431 "pause (seconds): suspend program execution") |
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432 { |
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2086
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433 octave_value_list retval; |
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529
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434 |
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435 int nargin = args.length (); |
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436 |
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712
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437 if (! (nargin == 0 || nargin == 1)) |
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529
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438 { |
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439 print_usage ("pause"); |
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440 return retval; |
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441 } |
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442 |
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1579
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443 if (nargin == 1) |
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529
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444 { |
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1579
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445 double dval = args(0).double_value (); |
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636
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446 |
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1579
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447 if (! error_state) |
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448 { |
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449 if (xisnan (dval)) |
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450 warning ("pause: NaN is an invalid delay"); |
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2630
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451 else if (xisinf (dval)) |
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452 kbhit (); |
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1579
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453 else |
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454 { |
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455 int delay = NINT (dval); |
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456 if (delay > 0) |
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457 sleep (delay); |
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458 } |
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529
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459 } |
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460 } |
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1579
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461 else |
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2630
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462 kbhit (); |
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463 |
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464 return retval; |
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465 } |
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466 |
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467 DEFUN (sleep, args, , |
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468 "sleep (seconds): suspend program execution") |
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469 { |
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470 octave_value_list retval; |
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471 |
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472 if (args.length () == 1) |
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1579
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473 { |
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2630
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474 double dval = args(0).double_value (); |
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475 |
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476 if (! error_state) |
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477 { |
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478 if (xisnan (dval)) |
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479 warning ("sleep: NaN is an invalid delay"); |
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480 else |
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481 { |
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482 int delay = NINT (dval); |
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483 if (delay > 0) |
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484 sleep (delay); |
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485 } |
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486 } |
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1579
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487 } |
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2630
|
488 else |
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489 print_usage ("sleep"); |
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|
490 |
|
|
491 return retval; |
|
|
492 } |
|
|
493 |
|
|
494 DEFUN (usleep, args, , |
|
|
495 "usleep (microseconds): suspend program execution") |
|
|
496 { |
|
|
497 octave_value_list retval; |
|
|
498 |
|
|
499 if (args.length () == 1) |
|
|
500 { |
|
|
501 double dval = args(0).double_value (); |
|
|
502 |
|
|
503 if (! error_state) |
|
|
504 { |
|
|
505 if (xisnan (dval)) |
|
|
506 warning ("usleep: NaN is an invalid delay"); |
|
|
507 else |
|
|
508 { |
|
2631
|
509 #if defined (HAVE_USLEEP) |
|
2630
|
510 int delay = NINT (dval); |
|
2631
|
511 |
|
2630
|
512 if (delay > 0) |
|
|
513 usleep (delay); |
|
|
514 #else |
|
2631
|
515 int delay = NINT (dval / 1e6); |
|
2630
|
516 |
|
2631
|
517 if (delay > 0) |
|
|
518 sleep (delay); |
|
2630
|
519 #endif |
|
|
520 } |
|
|
521 } |
|
|
522 } |
|
|
523 else |
|
|
524 print_usage ("usleep"); |
|
529
|
525 |
|
|
526 return retval; |
|
|
527 } |
|
|
528 |
|
862
|
529 // XXX FIXME XXX -- maybe this should only return 1 if IEEE floating |
|
|
530 // point functions really work. |
|
|
531 |
|
1957
|
532 DEFUN (isieee, , , |
|
862
|
533 "isieee (): return 1 if host uses IEEE floating point") |
|
|
534 { |
|
2317
|
535 oct_mach_info::float_format flt_fmt = |
|
|
536 oct_mach_info::native_float_format (); |
|
|
537 |
|
2800
|
538 return static_cast<double> (flt_fmt == oct_mach_info::ieee_little_endian |
|
|
539 || flt_fmt == oct_mach_info::ieee_big_endian); |
|
862
|
540 } |
|
|
541 |
|
1957
|
542 DEFUN (tilde_expand, args, , |
|
1750
|
543 "tilde_expand (STRING): perform tilde expansion on STRING") |
|
|
544 { |
|
2086
|
545 octave_value_list retval; |
|
1750
|
546 |
|
|
547 int nargin = args.length (); |
|
|
548 |
|
|
549 if (nargin == 1) |
|
2926
|
550 retval = file_ops::tilde_expand (args(0).all_strings ()); |
|
1750
|
551 else |
|
|
552 print_usage ("tilde_expand"); |
|
|
553 |
|
|
554 return retval; |
|
|
555 } |
|
|
556 |
|
2552
|
557 #if defined (__EMX__) && defined (OS2) |
|
|
558 |
|
|
559 DEFUN_TEXT (extproc, , , |
|
2926
|
560 "extproc: ignored by Octave") |
|
2552
|
561 { |
|
|
562 return octave_value_list (); |
|
|
563 } |
|
|
564 |
|
|
565 DEFALIAS (EXTPROC, extproc); |
|
|
566 |
|
|
567 #endif |
|
|
568 |
|
529
|
569 /* |
|
1
|
570 ;;; Local Variables: *** |
|
|
571 ;;; mode: C++ *** |
|
|
572 ;;; End: *** |
|
|
573 */ |
