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1 /* |
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2 |
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3 Copyright (C) 1996, 1997 John W. Eaton |
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4 |
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5 This file is part of Octave. |
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6 |
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7 Octave is free software; you can redistribute it and/or modify it |
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8 under the terms of the GNU General Public License as published by the |
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9 Free Software Foundation; either version 2, or (at your option) any |
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10 later version. |
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11 |
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12 Octave is distributed in the hope that it will be useful, but WITHOUT |
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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15 for more details. |
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16 |
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17 You should have received a copy of the GNU General Public License |
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18 along with Octave; see the file COPYING. If not, write to the Free |
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19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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20 |
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21 */ |
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22 |
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240
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23 #ifdef HAVE_CONFIG_H |
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1192
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24 #include <config.h> |
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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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3503
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34 #include <iostream> |
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1728
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35 #include <string> |
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36 |
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1350
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37 #ifdef HAVE_UNISTD_H |
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2442
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38 #ifdef HAVE_SYS_TYPES_H |
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529
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39 #include <sys/types.h> |
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2442
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40 #endif |
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529
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41 #include <unistd.h> |
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42 #endif |
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1
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43 |
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1430
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44 #if defined (HAVE_TERMIOS_H) |
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45 #include <termios.h> |
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46 #elif defined (HAVE_TERMIO_H) |
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47 #include <termio.h> |
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48 #elif defined (HAVE_SGTTY_H) |
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49 #include <sgtty.h> |
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4067
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50 #endif |
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51 |
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52 #if defined (HAVE_CONIO_H) |
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53 #include <conio.h> |
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1430
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54 #endif |
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55 |
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3248
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56 #if defined (HAVE_SYS_IOCTL_H) |
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57 #include <sys/ioctl.h> |
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58 #endif |
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59 |
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1463
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60 #if defined (HAVE_FLOATINGPOINT_H) |
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61 #include <floatingpoint.h> |
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62 #endif |
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63 |
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2508
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64 #if defined (HAVE_IEEEFP_H) |
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65 #include <ieeefp.h> |
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66 #endif |
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67 |
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1463
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68 #if !defined (HAVE_GETHOSTNAME) && defined (HAVE_SYS_UTSNAME_H) |
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69 #include <sys/utsname.h> |
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70 #endif |
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71 |
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2926
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72 #include "cmd-edit.h" |
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73 #include "file-ops.h" |
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2893
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74 #include "lo-mappers.h" |
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2317
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75 #include "mach-info.h" |
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2926
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76 #include "oct-env.h" |
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1769
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77 |
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1352
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78 #include "defun.h" |
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79 #include "error.h" |
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529
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80 #include "input.h" |
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1755
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81 #include "oct-obj.h" |
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2370
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82 #include "ov.h" |
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3234
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83 #include "pager.h" |
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1352
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84 #include "sysdep.h" |
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1755
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85 #include "toplev.h" |
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529
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86 #include "utils.h" |
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87 |
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88 #ifndef STDIN_FILENO |
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89 #define STDIN_FILENO 1 |
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90 #endif |
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444
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91 |
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2508
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92 #if defined (__386BSD__) || defined (__FreeBSD__) |
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93 static void |
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94 BSD_init (void) |
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95 { |
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96 #if defined (HAVE_FLOATINGPOINT_H) |
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97 // Disable trapping on common exceptions. |
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4164
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98 #ifndef FP_X_DNML |
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99 #define FP_X_DNML 0 |
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100 #endif |
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2508
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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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4091
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106 #if defined (__CYGWIN__) |
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107 |
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108 #include <limits.h> |
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109 #include <sys/cygwin.h> |
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110 |
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111 static void |
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112 CYGWIN_init (void) |
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113 { |
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114 std::string tmpdir = octave_env::getenv ("TMPDIR"); |
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115 |
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116 if (tmpdir.empty ()) |
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117 { |
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118 char buf [PATH_MAX]; |
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119 |
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120 cygwin32_conv_to_win32_path ("/tmp", buf); |
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121 |
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122 octave_env::putenv ("TMPDIR", buf); |
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123 } |
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124 } |
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125 #endif |
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126 |
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4284
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127 #if defined (__DECCXX) |
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128 |
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129 // These don't seem to be instantiated automatically... |
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130 |
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131 template std::istream& |
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132 std::operator >> (std::istream&, std::complex<double>&); |
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133 |
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134 template std::string& |
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135 std::string::append (const std::string&, size_t, size_t); |
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136 |
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137 #endif |
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138 |
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2610
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139 #if defined (NeXT) |
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140 extern "C" |
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141 { |
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142 typedef void (*_cplus_fcn_int) (int); |
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143 extern void (*malloc_error (_cplus_fcn_int)) (int); |
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144 } |
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145 |
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146 static void |
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147 malloc_handler (int code) |
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148 { |
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149 if (code == 5) |
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217
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150 warning ("hopefully recoverable malloc error: freeing wild pointer"); |
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1
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151 else |
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2926
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152 panic ("probably irrecoverable malloc error: code %d", code); |
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1
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153 } |
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154 |
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155 static void |
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156 NeXT_init (void) |
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157 { |
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158 malloc_error (malloc_handler); |
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159 } |
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3333
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160 #endif |
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161 |
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2546
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162 #if defined (__EMX__) |
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163 OS2_init (void) |
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164 { |
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165 _control87 ((EM_INVALID | EM_DENORMAL | EM_ZERODIVIDE | EM_OVERFLOW |
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166 | EM_UNDERFLOW | EM_INEXACT), MCW_EM); |
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167 } |
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168 #endif |
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169 |
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2508
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170 #if defined (SCO) |
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171 static void |
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172 SCO_init (void) |
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173 { |
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174 #if defined (HAVE_IEEEFP_H) |
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175 // Disable trapping on common exceptions. |
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176 fpsetmask (~(FP_X_OFL|FP_X_INV|FP_X_DZ|FP_X_DNML|FP_X_UFL|FP_X_IMP)); |
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177 #endif |
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178 } |
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179 #endif |
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180 |
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181 void |
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182 sysdep_init (void) |
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183 { |
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959
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184 #if defined (__386BSD__) || defined (__FreeBSD__) |
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2508
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185 BSD_init (); |
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4091
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186 #elif defined (__CYGWIN__) |
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187 CYGWIN_init (); |
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2610
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188 #elif defined (NeXT) |
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1
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189 NeXT_init (); |
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2610
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190 #elif defined (__EMX__) |
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2546
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191 OS2_init (); |
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2508
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192 #elif defined (SCO) |
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193 SCO_init (); |
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1
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194 #endif |
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444
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195 |
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196 octave_ieee_init (); |
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1
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197 } |
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198 |
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767
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199 // Set terminal in raw mode. From less-177. |
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200 // |
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201 // Change terminal to "raw mode", or restore to "normal" mode. |
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202 // "Raw mode" means |
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203 // 1. An outstanding read will complete on receipt of a single keystroke. |
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204 // 2. Input is not echoed. |
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205 // 3. On output, \n is mapped to \r\n. |
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206 // 4. \t is NOT expanded into spaces. |
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207 // 5. Signal-causing characters such as ctrl-C (interrupt), |
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208 // etc. are NOT disabled. |
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209 // It doesn't matter whether an input \n is mapped to \r, or vice versa. |
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210 |
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529
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211 void |
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3657
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212 raw_mode (bool on, bool wait) |
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529
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213 { |
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3657
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214 static bool curr_on = false; |
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529
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215 |
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216 int tty_fd = STDIN_FILENO; |
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217 if (! isatty (tty_fd)) |
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218 { |
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219 if (interactive) |
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220 error ("stdin is not a tty!"); |
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221 return; |
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222 } |
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223 |
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224 if (on == curr_on) |
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225 return; |
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226 |
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227 #if defined (HAVE_TERMIOS_H) |
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228 { |
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229 struct termios s; |
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230 static struct termios save_term; |
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231 |
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232 if (on) |
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233 { |
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1358
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234 // Get terminal modes. |
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529
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235 |
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236 tcgetattr (tty_fd, &s); |
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237 |
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1358
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238 // Save modes and set certain variables dependent on modes. |
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529
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239 |
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240 save_term = s; |
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241 // ospeed = s.c_cflag & CBAUD; |
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242 // erase_char = s.c_cc[VERASE]; |
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243 // kill_char = s.c_cc[VKILL]; |
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244 |
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1358
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245 // Set the modes to the way we want them. |
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529
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246 |
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247 s.c_lflag &= ~(ICANON|ECHO|ECHOE|ECHOK|ECHONL); |
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248 s.c_oflag |= (OPOST|ONLCR); |
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249 #if defined (OCRNL) |
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250 s.c_oflag &= ~(OCRNL); |
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251 #endif |
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252 #if defined (ONOCR) |
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253 s.c_oflag &= ~(ONOCR); |
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254 #endif |
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255 #if defined (ONLRET) |
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256 s.c_oflag &= ~(ONLRET); |
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257 #endif |
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3658
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258 s.c_cc[VMIN] = wait ? 1 : 0; |
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529
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259 s.c_cc[VTIME] = 0; |
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260 } |
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261 else |
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262 { |
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1358
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263 // Restore saved modes. |
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264 |
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529
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265 s = save_term; |
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266 } |
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3658
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267 |
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529
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268 tcsetattr (tty_fd, TCSAFLUSH, &s); |
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269 } |
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270 #elif defined (HAVE_TERMIO_H) |
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271 { |
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272 struct termio s; |
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273 static struct termio save_term; |
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274 |
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275 if (on) |
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276 { |
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1358
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277 // Get terminal modes. |
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529
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278 |
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279 ioctl (tty_fd, TCGETA, &s); |
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280 |
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281 // Save modes and set certain variables dependent on modes. |
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529
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282 |
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283 save_term = s; |
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284 // ospeed = s.c_cflag & CBAUD; |
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285 // erase_char = s.c_cc[VERASE]; |
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286 // kill_char = s.c_cc[VKILL]; |
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287 |
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1358
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288 // Set the modes to the way we want them. |
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529
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289 |
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290 s.c_lflag &= ~(ICANON|ECHO|ECHOE|ECHOK|ECHONL); |
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291 s.c_oflag |= (OPOST|ONLCR); |
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292 #if defined (OCRNL) |
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293 s.c_oflag &= ~(OCRNL); |
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294 #endif |
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295 #if defined (ONOCR) |
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296 s.c_oflag &= ~(ONOCR); |
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297 #endif |
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298 #if defined (ONLRET) |
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299 s.c_oflag &= ~(ONLRET); |
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300 #endif |
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3658
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301 s.c_cc[VMIN] = wait ? 1 : 0; |
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529
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302 } |
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303 else |
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304 { |
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1358
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305 // Restore saved modes. |
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306 |
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529
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307 s = save_term; |
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308 } |
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3658
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309 |
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529
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310 ioctl (tty_fd, TCSETAW, &s); |
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311 } |
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312 #elif defined (HAVE_SGTTY_H) |
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313 { |
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314 struct sgttyb s; |
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315 static struct sgttyb save_term; |
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316 |
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317 if (on) |
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318 { |
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1358
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319 // Get terminal modes. |
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529
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320 |
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321 ioctl (tty_fd, TIOCGETP, &s); |
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322 |
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1358
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323 // Save modes and set certain variables dependent on modes. |
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529
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324 |
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325 save_term = s; |
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326 // ospeed = s.sg_ospeed; |
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327 // erase_char = s.sg_erase; |
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328 // kill_char = s.sg_kill; |
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329 |
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1358
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330 // Set the modes to the way we want them. |
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529
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331 |
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332 s.sg_flags |= CBREAK; |
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333 s.sg_flags &= ~(ECHO); |
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334 } |
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335 else |
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336 { |
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1358
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337 // Restore saved modes. |
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338 |
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529
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339 s = save_term; |
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340 } |
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3658
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341 |
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529
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342 ioctl (tty_fd, TIOCSETN, &s); |
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343 } |
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344 #else |
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4064
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345 warning ("no support for raw mode console I/O on this system"); |
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346 |
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347 // Make sure the current mode doesn't toggle. |
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348 on = curr_on; |
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529
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349 #endif |
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350 |
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351 curr_on = on; |
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352 } |
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353 |
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767
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354 // Read one character from the terminal. |
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355 |
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529
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356 int |
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4067
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357 octave_kbhit (bool wait) |
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529
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358 { |
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4067
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359 #ifdef HAVE__KBHIT |
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4081
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360 int c = (! wait && ! _kbhit ()) ? 0 : std::cin.get (); |
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4067
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361 #else |
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3658
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362 raw_mode (true, wait); |
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363 |
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364 int c = std::cin.get (); |
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365 |
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366 if (std::cin.fail () || std::cin.eof ()) |
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367 std::cin.clear (); |
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368 |
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369 raw_mode (false, true); |
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4067
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370 #endif |
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3658
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371 |
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529
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372 return c; |
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373 } |
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374 |
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1957
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375 DEFUN (clc, , , |
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3332
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376 "-*- texinfo -*-\n\ |
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377 @deftypefn {Built-in Function} {} clc ()\n\ |
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378 @deftypefnx {Built-in Function} {} home ()\n\ |
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379 Clear the terminal screen and move the cursor to the upper left corner.\n\ |
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3333
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380 @end deftypefn") |
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529
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381 { |
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2926
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382 command_editor::clear_screen (); |
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529
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383 |
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2926
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384 return octave_value_list (); |
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529
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385 } |
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386 |
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549
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387 DEFALIAS (home, clc); |
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388 |
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1957
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389 DEFUN (getenv, args, , |
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3301
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390 "-*- texinfo -*-\n\ |
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391 @deftypefn {Built-in Function} {} getenv (@var{var})\n\ |
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392 Return the value of the environment variable @var{var}. For example,\n\ |
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393 \n\ |
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394 @example\n\ |
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395 getenv (\"PATH\")\n\ |
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396 @end example\n\ |
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397 \n\ |
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398 @noindent\n\ |
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399 returns a string containing the value of your path.\n\ |
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400 @end deftypefn") |
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529
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401 { |
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4233
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402 octave_value retval; |
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529
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403 |
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404 int nargin = args.length (); |
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405 |
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712
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406 if (nargin == 1) |
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529
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407 { |
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3523
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408 std::string name = args(0).string_value (); |
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636
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409 |
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410 if (! error_state) |
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2926
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411 retval = octave_env::getenv (name); |
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529
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412 } |
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413 else |
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414 print_usage ("getenv"); |
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415 |
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416 return retval; |
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417 } |
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418 |
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1957
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419 DEFUN (putenv, args, , |
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3301
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420 "-*- texinfo -*-\n\ |
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421 @deftypefn {Built-in Function} {} putenv (@var{var}, @var{value})\n\ |
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422 Set the value of the environment variable @var{var} to @var{value}.\n\ |
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423 @end deftypefn") |
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1706
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424 { |
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2086
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425 octave_value_list retval; |
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1706
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426 |
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427 int nargin = args.length (); |
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428 |
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429 if (nargin == 2) |
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430 { |
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3523
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431 std::string var = args(0).string_value (); |
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1706
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432 |
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433 if (! error_state) |
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434 { |
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3523
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435 std::string val = args(1).string_value (); |
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1706
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436 |
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437 if (! error_state) |
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2926
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438 octave_env::putenv (var, val); |
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1706
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439 else |
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440 error ("putenv: second argument should be a string"); |
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441 } |
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442 else |
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443 error ("putenv: first argument should be a string"); |
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444 } |
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445 else |
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446 print_usage ("putenv"); |
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447 |
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448 return retval; |
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449 } |
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450 |
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3372
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451 // XXX FIXME XXX -- perhaps kbhit should also be able to print a prompt? |
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452 |
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3657
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453 DEFUN (kbhit, args, , |
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3372
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454 "-*- texinfo -*-\n\ |
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455 @deftypefn {Built-in Function} {} kbhit ()\n\ |
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3657
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456 Read a single keystroke from the keyboard. If called with one\n\ |
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457 argument, don't wait for a keypress. For example,\n\ |
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3372
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458 \n\ |
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459 @example\n\ |
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460 x = kbhit ();\n\ |
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461 @end example\n\ |
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462 \n\ |
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463 @noindent\n\ |
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464 will set @var{x} to the next character typed at the keyboard as soon as\n\ |
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465 it is typed.\n\ |
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3657
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466 \n\ |
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467 @example\n\ |
|
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468 x = kbhit (1);\n\ |
|
|
469 @end example\n\ |
|
|
470 \n\ |
|
|
471 @noindent\n\ |
|
|
472 identical to the above example, but don't wait for a keypress,\n\ |
|
|
473 returning the empty string if no key is available.\n\ |
|
3372
|
474 @end deftypefn") |
|
529
|
475 { |
|
4233
|
476 octave_value retval; |
|
529
|
477 |
|
1358
|
478 // XXX FIXME XXX -- add timeout and default value args? |
|
529
|
479 |
|
3676
|
480 if (interactive || forced_interactive) |
|
529
|
481 { |
|
4067
|
482 int c = octave_kbhit (args.length () == 0); |
|
3657
|
483 |
|
3658
|
484 if (c == -1) |
|
|
485 c = 0; |
|
3657
|
486 |
|
529
|
487 char *s = new char [2]; |
|
|
488 s[0] = c; |
|
|
489 s[1] = '\0'; |
|
|
490 retval = s; |
|
|
491 } |
|
|
492 |
|
|
493 return retval; |
|
|
494 } |
|
|
495 |
|
1957
|
496 DEFUN (pause, args, , |
|
3301
|
497 "-*- texinfo -*-\n\ |
|
|
498 @deftypefn {Built-in Function} {} pause (@var{seconds})\n\ |
|
|
499 Suspend the execution of the program. If invoked without any arguments,\n\ |
|
|
500 Octave waits until you type a character. With a numeric argument, it\n\ |
|
|
501 pauses for the given number of seconds. For example, the following\n\ |
|
|
502 statement prints a message and then waits 5 seconds before clearing the\n\ |
|
|
503 screen.\n\ |
|
|
504 \n\ |
|
|
505 @example\n\ |
|
|
506 @group\n\ |
|
|
507 fprintf (stderr, \"wait please...\n\");\n\ |
|
|
508 pause (5);\n\ |
|
|
509 clc;\n\ |
|
|
510 @end group\n\ |
|
|
511 @end example\n\ |
|
|
512 @end deftypefn") |
|
529
|
513 { |
|
2086
|
514 octave_value_list retval; |
|
529
|
515 |
|
|
516 int nargin = args.length (); |
|
|
517 |
|
712
|
518 if (! (nargin == 0 || nargin == 1)) |
|
529
|
519 { |
|
|
520 print_usage ("pause"); |
|
|
521 return retval; |
|
|
522 } |
|
|
523 |
|
1579
|
524 if (nargin == 1) |
|
529
|
525 { |
|
1579
|
526 double dval = args(0).double_value (); |
|
636
|
527 |
|
1579
|
528 if (! error_state) |
|
|
529 { |
|
|
530 if (xisnan (dval)) |
|
|
531 warning ("pause: NaN is an invalid delay"); |
|
2630
|
532 else if (xisinf (dval)) |
|
3234
|
533 { |
|
|
534 flush_octave_stdout (); |
|
4067
|
535 octave_kbhit (); |
|
3234
|
536 } |
|
1579
|
537 else |
|
4086
|
538 octave_sleep (dval); |
|
529
|
539 } |
|
|
540 } |
|
1579
|
541 else |
|
3234
|
542 { |
|
|
543 flush_octave_stdout (); |
|
4067
|
544 octave_kbhit (); |
|
3234
|
545 } |
|
2630
|
546 |
|
|
547 return retval; |
|
|
548 } |
|
|
549 |
|
|
550 DEFUN (sleep, args, , |
|
3301
|
551 "-*- texinfo -*-\n\ |
|
|
552 @deftypefn {Built-in Function} {} sleep (@var{seconds})\n\ |
|
|
553 Suspend the execution of the program for the given number of seconds.\n\ |
|
|
554 @end deftypefn") |
|
2630
|
555 { |
|
|
556 octave_value_list retval; |
|
|
557 |
|
|
558 if (args.length () == 1) |
|
1579
|
559 { |
|
2630
|
560 double dval = args(0).double_value (); |
|
|
561 |
|
|
562 if (! error_state) |
|
|
563 { |
|
|
564 if (xisnan (dval)) |
|
|
565 warning ("sleep: NaN is an invalid delay"); |
|
|
566 else |
|
4086
|
567 octave_sleep (dval); |
|
2630
|
568 } |
|
1579
|
569 } |
|
2630
|
570 else |
|
|
571 print_usage ("sleep"); |
|
|
572 |
|
|
573 return retval; |
|
|
574 } |
|
|
575 |
|
|
576 DEFUN (usleep, args, , |
|
3301
|
577 "-*- texinfo -*-\n\ |
|
|
578 @deftypefn {Built-in Function} {} usleep (@var{microseconds})\n\ |
|
|
579 Suspend the execution of the program for the given number of\n\ |
|
|
580 microseconds. On systems where it is not possible to sleep for periods\n\ |
|
|
581 of time less than one second, @code{usleep} will pause the execution for\n\ |
|
|
582 @code{round (@var{microseconds} / 1e6)} seconds.\n\ |
|
|
583 @end deftypefn") |
|
2630
|
584 { |
|
|
585 octave_value_list retval; |
|
|
586 |
|
|
587 if (args.length () == 1) |
|
|
588 { |
|
|
589 double dval = args(0).double_value (); |
|
|
590 |
|
|
591 if (! error_state) |
|
|
592 { |
|
|
593 if (xisnan (dval)) |
|
|
594 warning ("usleep: NaN is an invalid delay"); |
|
|
595 else |
|
|
596 { |
|
|
597 int delay = NINT (dval); |
|
2631
|
598 |
|
2630
|
599 if (delay > 0) |
|
3308
|
600 octave_usleep (delay); |
|
2630
|
601 } |
|
|
602 } |
|
|
603 } |
|
|
604 else |
|
|
605 print_usage ("usleep"); |
|
529
|
606 |
|
|
607 return retval; |
|
|
608 } |
|
|
609 |
|
862
|
610 // XXX FIXME XXX -- maybe this should only return 1 if IEEE floating |
|
|
611 // point functions really work. |
|
|
612 |
|
1957
|
613 DEFUN (isieee, , , |
|
3301
|
614 "-*- texinfo -*-\n\ |
|
|
615 @deftypefn {Built-in Function} {} isieee ()\n\ |
|
|
616 Return 1 if your computer claims to conform to the IEEE standard for\n\ |
|
|
617 floating point calculations.\n\ |
|
|
618 @end deftypefn") |
|
862
|
619 { |
|
2317
|
620 oct_mach_info::float_format flt_fmt = |
|
|
621 oct_mach_info::native_float_format (); |
|
|
622 |
|
4233
|
623 return octave_value (flt_fmt == oct_mach_info::ieee_little_endian |
|
|
624 || flt_fmt == oct_mach_info::ieee_big_endian); |
|
862
|
625 } |
|
|
626 |
|
1957
|
627 DEFUN (tilde_expand, args, , |
|
3301
|
628 "-*- texinfo -*-\n\ |
|
|
629 @deftypefn {Built-in Function} {} tilde_expand (@var{string})\n\ |
|
|
630 Performs tilde expansion on @var{string}. If @var{string} begins with a\n\ |
|
|
631 tilde character, (@samp{~}), all of the characters preceding the first\n\ |
|
|
632 slash (or all characters, if there is no slash) are treated as a\n\ |
|
|
633 possible user name, and the tilde and the following characters up to the\n\ |
|
|
634 slash are replaced by the home directory of the named user. If the\n\ |
|
|
635 tilde is followed immediately by a slash, the tilde is replaced by the\n\ |
|
|
636 home directory of the user running Octave. For example,\n\ |
|
|
637 \n\ |
|
|
638 @example\n\ |
|
|
639 @group\n\ |
|
|
640 tilde_expand (\"~joeuser/bin\")\n\ |
|
|
641 @result{} \"/home/joeuser/bin\"\n\ |
|
|
642 tilde_expand (\"~/bin\")\n\ |
|
|
643 @result{} \"/home/jwe/bin\"\n\ |
|
|
644 @end group\n\ |
|
|
645 @end example\n\ |
|
|
646 @end deftypefn") |
|
1750
|
647 { |
|
4233
|
648 octave_value retval; |
|
1750
|
649 |
|
|
650 int nargin = args.length (); |
|
|
651 |
|
|
652 if (nargin == 1) |
|
2926
|
653 retval = file_ops::tilde_expand (args(0).all_strings ()); |
|
1750
|
654 else |
|
|
655 print_usage ("tilde_expand"); |
|
|
656 |
|
|
657 return retval; |
|
|
658 } |
|
|
659 |
|
2552
|
660 #if defined (__EMX__) && defined (OS2) |
|
|
661 |
|
4208
|
662 DEFCMD (extproc, , , |
|
2926
|
663 "extproc: ignored by Octave") |
|
2552
|
664 { |
|
|
665 return octave_value_list (); |
|
|
666 } |
|
|
667 |
|
|
668 DEFALIAS (EXTPROC, extproc); |
|
|
669 |
|
|
670 #endif |
|
|
671 |
|
529
|
672 /* |
|
1
|
673 ;;; Local Variables: *** |
|
|
674 ;;; mode: C++ *** |
|
|
675 ;;; End: *** |
|
|
676 */ |
