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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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1683
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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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23 #ifdef HAVE_CONFIG_H |
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24 #include <config.h> |
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25 #endif |
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26 |
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27 #include <cassert> |
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28 #include <csetjmp> |
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29 #include <csignal> |
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30 #include <cstdlib> |
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31 #include <cstring> |
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32 |
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1728
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33 #include <string> |
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34 |
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1683
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35 #include <fstream.h> |
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36 #include <iostream.h> |
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37 #include <strstream.h> |
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38 |
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39 #ifdef HAVE_UNISTD_H |
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2442
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40 #ifdef HAVE_SYS_TYPES_H |
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41 #include <sys/types.h> |
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2442
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42 #endif |
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43 #include <unistd.h> |
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44 #endif |
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45 |
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2926
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46 #include "cmd-edit.h" |
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47 #include "file-ops.h" |
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1683
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48 #include "lo-error.h" |
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2370
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49 #include "lo-mappers.h" |
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3020
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50 #include "oct-env.h" |
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1755
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51 #include "str-vec.h" |
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52 |
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2492
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53 #include <defaults.h> |
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54 #include "defun.h" |
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55 #include "error.h" |
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56 #include "file-io.h" |
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57 #include "input.h" |
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58 #include "lex.h" |
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2492
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59 #include <oct-conf.h> |
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1742
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60 #include "oct-hist.h" |
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2162
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61 #include "oct-map.h" |
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2862
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62 #include "oct-obj.h" |
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63 #include "pager.h" |
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64 #include "parse.h" |
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65 #include "pathsearch.h" |
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66 #include "procstream.h" |
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2370
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67 #include "ov.h" |
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2985
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68 #include "pt-jump.h" |
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1750
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69 #include "pt-plot.h" |
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2982
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70 #include "pt-stmt.h" |
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71 #include "sighandlers.h" |
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72 #include "sysdep.h" |
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2693
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73 #include "syswait.h" |
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1750
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74 #include "toplev.h" |
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75 #include "unwind-prot.h" |
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76 #include "utils.h" |
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77 #include "variables.h" |
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2492
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78 #include <version.h> |
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79 |
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80 // TRUE means we are exiting via the builtin exit or quit functions. |
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81 static bool quitting_gracefully = false; |
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82 |
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83 // Current command to execute. |
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84 tree_statement_list *global_command = 0; |
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85 |
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86 // Pointer to function that is currently being evaluated. |
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2891
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87 octave_user_function *curr_function = 0; |
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88 |
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1907
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89 // Top level context (?) |
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90 jmp_buf toplevel; |
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91 |
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92 int |
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93 main_loop (void) |
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94 { |
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95 // Allow the user to interrupt us without exiting. |
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96 |
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97 octave_save_signal_mask (); |
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98 |
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99 if (setjmp (toplevel) != 0) |
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100 { |
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101 raw_mode (0); |
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102 |
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103 cout << "\n"; |
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104 |
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105 octave_restore_signal_mask (); |
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1907
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106 } |
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107 |
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108 can_interrupt = true; |
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109 |
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110 octave_catch_interrupts (); |
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111 |
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112 // The big loop. |
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113 |
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114 int retval; |
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115 do |
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116 { |
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117 curr_sym_tab = top_level_sym_tab; |
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118 |
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119 reset_parser (); |
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120 |
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121 retval = yyparse (); |
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122 |
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123 if (retval == 0 && global_command) |
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124 { |
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2898
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125 global_command->eval (); |
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126 |
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1907
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127 delete global_command; |
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128 |
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2620
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129 global_command = 0; |
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130 |
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131 if (! (interactive || forced_interactive)) |
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132 { |
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2985
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133 bool quit = (tree_return_command::returning |
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134 || tree_break_command::breaking); |
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135 |
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136 if (tree_return_command::returning) |
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137 tree_return_command::returning = 0; |
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138 |
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2985
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139 if (tree_break_command::breaking) |
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140 tree_break_command::breaking--; |
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141 |
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142 if (quit) |
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143 break; |
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144 } |
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145 |
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146 if (error_state) |
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147 { |
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148 if (! (interactive || forced_interactive)) |
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149 break; |
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150 } |
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2299
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151 else |
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2620
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152 { |
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153 if (octave_completion_matches_called) |
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154 octave_completion_matches_called = false; |
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155 else |
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2973
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156 command_editor::increment_current_command_number (); |
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2620
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157 } |
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1907
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158 } |
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159 } |
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160 while (retval == 0); |
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161 |
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162 return retval; |
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163 } |
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164 |
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165 // Fix up things before exiting. |
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166 |
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167 void |
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3162
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168 clean_up_and_exit (int retval) |
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169 { |
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3216
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170 do_octave_atexit (); |
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171 |
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3162
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172 exit (retval == EOF ? 0 : retval); |
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173 } |
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174 |
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1957
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175 DEFUN_TEXT (casesen, args, , |
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176 "casesen [on|off]") |
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177 { |
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178 octave_value_list retval; |
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179 |
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180 int argc = args.length () + 1; |
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181 |
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1965
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182 string_vector argv = args.make_argv ("casesen"); |
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183 |
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184 if (error_state) |
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185 return retval; |
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186 |
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187 if (argc == 1 || (argc > 1 && argv[1] == "off")) |
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188 warning ("casesen: sorry, Octave is always case sensitive"); |
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189 else if (argc > 1 && argv[1] == "on") |
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190 ; // ok. |
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191 else |
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192 print_usage ("casesen"); |
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193 |
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194 return retval; |
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195 } |
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196 |
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1957
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197 DEFUN (computer, args, nargout, |
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198 "-*- texinfo -*-\n\ |
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199 @deftypefn {Built-in Function} {} computer ()\n\ |
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200 Print or return a string of the form @var{cpu}-@var{vendor}-@var{os}\n\ |
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201 that identifies the kind of computer Octave is running on. If invoked\n\ |
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202 with an output argument, the value is returned instead of printed. For\n\ |
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203 example,\n\ |
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204 \n\ |
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3301
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205 @example\n\ |
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206 @group\n\ |
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207 computer ()\n\ |
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208 @print{} i586-pc-linux-gnu\n\ |
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209 \n\ |
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210 x = computer ()\n\ |
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211 @result{} x = \"i586-pc-linux-gnu\"\n\ |
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212 @end group\n\ |
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213 @end example\n\ |
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214 @end deftypefn") |
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215 { |
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216 octave_value_list retval; |
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217 |
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218 int nargin = args.length (); |
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219 |
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220 if (nargin != 0) |
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221 warning ("computer: ignoring extra arguments"); |
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222 |
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2095
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223 string msg; |
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224 |
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3234
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225 if (strcmp (CANONICAL_HOST_TYPE, "unknown") == 0) |
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226 msg = "Hi Dave, I'm a HAL-9000"; |
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227 else |
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3234
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228 msg = CANONICAL_HOST_TYPE; |
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229 |
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230 if (nargout == 0) |
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231 octave_stdout << msg << "\n"; |
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232 else |
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233 retval = msg; |
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234 |
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235 return retval; |
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236 } |
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237 |
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3180
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238 DEFUN (quit, args, nargout, |
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239 "-*- texinfo -*-\n\ |
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240 @deftypefn {Built-in Function} {} exit (@var{status})\n\ |
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241 @deftypefnx {Built-in Function} {} quit (@var{status})\n\ |
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242 Exit the current Octave session. If the optional integer value\n\ |
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243 @var{status} is supplied, pass that value to the operating system as the\n\ |
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244 Octave's exit status.\n\ |
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3333
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245 @end deftypefn") |
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246 { |
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2086
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247 octave_value_list retval; |
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2068
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248 |
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3180
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249 if (nargout == 0) |
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2068
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250 { |
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3180
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251 int exit_status = 0; |
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252 |
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253 quitting_gracefully = true; |
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254 |
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3180
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255 if (args.length () > 0) |
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256 { |
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3202
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257 int tmp = args(0).nint_value (); |
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258 |
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3202
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259 if (! error_state) |
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260 exit_status = tmp; |
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3180
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261 } |
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262 |
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263 clean_up_and_exit (exit_status); |
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2068
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264 } |
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3180
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265 else |
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266 error ("quit: invalid number of output arguments"); |
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2068
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267 |
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268 return retval; |
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269 } |
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270 |
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271 DEFALIAS (exit, quit); |
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272 |
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1957
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273 DEFUN (warranty, , , |
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274 "warranty (): describe copying conditions") |
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275 { |
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2086
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276 octave_value_list retval; |
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277 |
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278 octave_stdout << "\n" OCTAVE_NAME_VERSION_AND_COPYRIGHT "\n\n\ |
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279 This program is free software; you can redistribute it and/or modify\n\ |
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280 it under the terms of the GNU General Public License as published by\n\ |
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281 the Free Software Foundation; either version 2 of the License, or\n\ |
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282 (at your option) any later version.\n\ |
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283 \n\ |
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284 This program is distributed in the hope that it will be useful,\n\ |
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285 but WITHOUT ANY WARRANTY; without even the implied warranty of\n\ |
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286 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n\ |
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287 GNU General Public License for more details.\n\ |
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288 \n\ |
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289 You should have received a copy of the GNU General Public License\n\ |
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290 along with this program. If not, write to the Free Software\n\ |
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291 Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.\n\ |
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292 \n"; |
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293 |
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294 return retval; |
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295 } |
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296 |
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297 // Execute a shell command. |
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298 |
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1965
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299 static void |
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300 cleanup_iprocstream (void *p) |
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301 { |
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3060
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302 iprocstream *cmd = static_cast<iprocstream *> (p); |
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303 |
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304 octave_child_list::remove (cmd->pid ()); |
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305 |
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306 delete cmd; |
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1965
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307 } |
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308 |
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2086
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309 static octave_value_list |
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2321
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310 run_command_and_return_output (const string& cmd_str) |
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311 { |
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2086
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312 octave_value_list retval; |
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313 |
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314 iprocstream *cmd = new iprocstream (cmd_str.c_str ()); |
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315 |
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3060
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316 if (cmd) |
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317 { |
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3060
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318 unwind_protect::add (cleanup_iprocstream, cmd); |
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319 |
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320 if (*cmd) |
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321 { |
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322 ostrstream output_buf; |
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2095
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323 |
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3147
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324 // XXX FIXME XXX -- sometimes, the subprocess hasn't written |
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325 // anything before we try to read from the procstream. The |
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326 // kluge below (simply waiting and trying again) is ugly, |
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327 // but it seems to work, at least most of the time. It |
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328 // could probably still fail if the subprocess hasn't |
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329 // started writing after the snooze. Isn't there a better |
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330 // way? If there is, you should also fix the code for the |
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331 // ls function in dirfns.cc. |
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332 |
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3060
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333 char ch; |
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3147
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334 |
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335 if (cmd->get (ch)) |
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336 output_buf.put (ch); |
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337 else |
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338 { |
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339 cmd->clear (); |
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340 |
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3308
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341 octave_usleep (100); |
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3147
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342 } |
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343 |
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3060
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344 while (cmd->get (ch)) |
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345 output_buf.put (ch); |
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346 |
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3252
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347 int cmd_status = cmd->close (); |
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348 |
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3060
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349 if (WIFEXITED (cmd_status)) |
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350 cmd_status = WEXITSTATUS (cmd_status); |
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351 else |
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352 cmd_status = 127; |
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2083
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353 |
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3060
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354 output_buf << ends; |
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2145
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355 |
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3060
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356 char *msg = output_buf.str (); |
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357 |
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3060
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358 retval(1) = (double) cmd_status; |
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359 retval(0) = msg; |
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360 |
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3060
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361 delete [] msg; |
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362 } |
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363 |
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364 unwind_protect::run (); |
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365 } |
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366 else |
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367 error ("unable to start subprocess for `%s'", cmd_str.c_str ()); |
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368 |
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369 return retval; |
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370 } |
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371 |
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1957
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372 DEFUN (system, args, nargout, |
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3301
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373 "-*- texinfo -*-\n\ |
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374 @deftypefn {Built-in Function} {} system (@var{string}, @var{return_output}, @var{type})\n\ |
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375 Execute a shell command specified by @var{string}. The second\n\ |
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376 argument is optional. If @var{type} is @code{\"async\"}, the process\n\ |
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377 is started in the background and the process id of the child process\n\ |
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378 is returned immediately. Otherwise, the process is started, and\n\ |
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379 Octave waits until it exits. If @var{type} argument is omitted, a\n\ |
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380 value of @code{\"sync\"} is assumed.\n\ |
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2083
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381 \n\ |
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3301
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382 If two input arguments are given (the actual value of\n\ |
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383 @var{return_output} is irrelevant) and the subprocess is started\n\ |
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384 synchronously, or if @var{system} is called with one input argument and\n\ |
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385 one or more output arguments, the output from the command is returned.\n\ |
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2083
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386 Otherwise, if the subprocess is executed synchronously, it's output is\n\ |
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2321
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387 sent to the standard output. To send the output of a command executed\n\ |
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3301
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388 with @var{system} through the pager, use a command like\n\ |
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2321
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389 \n\ |
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3301
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390 @example\n\ |
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391 disp (system (cmd, 1));\n\ |
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392 @end example\n\ |
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2321
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393 \n\ |
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3301
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394 @noindent\n\ |
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2321
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395 or\n\ |
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396 \n\ |
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3301
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397 @example\n\ |
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398 printf (\"%s\n\", system (cmd, 1));\n\ |
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399 @end example\n\ |
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400 \n\ |
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401 The @code{system} function can return two values. The first is any\n\ |
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402 output from the command that was written to the standard output stream,\n\ |
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403 and the second is the output status of the command. For example,\n\ |
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404 \n\ |
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405 @example\n\ |
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406 [output, status] = system (\"echo foo; exit 2\");\n\ |
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407 @end example\n\ |
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408 \n\ |
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409 @noindent\n\ |
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410 will set the variable @code{output} to the string @samp{foo}, and the\n\ |
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411 variable @code{status} to the integer @samp{2}.\n\ |
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412 @end deftypefn") |
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1683
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413 { |
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2086
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414 octave_value_list retval; |
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1683
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415 |
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416 int nargin = args.length (); |
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417 |
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2083
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418 if (nargin > 0 && nargin < 4) |
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1683
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419 { |
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2083
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420 bool return_output = (nargout > 0 || nargin > 1); |
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421 |
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422 string cmd_str = args(0).string_value (); |
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423 |
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424 enum exec_type { sync, async }; |
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425 |
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426 exec_type type = sync; |
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427 |
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428 if (! error_state) |
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429 { |
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430 if (nargin > 2) |
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431 { |
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432 string type_str = args(2).string_value (); |
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1683
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433 |
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2083
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434 if (! error_state) |
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435 { |
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436 if (type_str == "sync") |
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437 type = sync; |
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438 else if (type_str == "async") |
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439 type = async; |
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440 else |
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441 error ("system: third arg must be \"sync\" or \"async\""); |
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442 } |
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443 else |
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444 error ("system: third argument must be a string"); |
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445 } |
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446 } |
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447 else |
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448 error ("system: expecting string as first argument"); |
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1683
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449 |
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2083
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450 if (! error_state) |
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451 { |
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452 if (type == async) |
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453 { |
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454 pid_t pid = fork (); |
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455 |
|
|
456 if (pid < 0) |
|
|
457 error ("system: fork failed -- can't create child process"); |
|
|
458 else if (pid == 0) |
|
|
459 { |
|
3273
|
460 // XXX FIXME XXX -- should probably replace this |
|
|
461 // call with something portable. |
|
|
462 |
|
|
463 execl ("/bin/sh", "sh", "-c", cmd_str.c_str (), 0); |
|
|
464 |
|
|
465 panic_impossible (); |
|
2083
|
466 } |
|
|
467 else |
|
2800
|
468 retval(0) = static_cast<double> (pid); |
|
2083
|
469 } |
|
2321
|
470 else if (return_output) |
|
|
471 retval = run_command_and_return_output (cmd_str); |
|
2083
|
472 else |
|
2321
|
473 { |
|
|
474 int status = system (cmd_str.c_str ()); |
|
|
475 |
|
|
476 // The value in status is as returned by waitpid. If |
|
|
477 // the process exited normally, extract the actual exit |
|
|
478 // status of the command. Otherwise, return 127 as a |
|
|
479 // failure code. |
|
|
480 |
|
2693
|
481 if (WIFEXITED (status)) |
|
|
482 status = WEXITSTATUS (status); |
|
2321
|
483 |
|
2800
|
484 retval = static_cast<double> (status); |
|
2321
|
485 } |
|
2083
|
486 } |
|
1683
|
487 } |
|
|
488 else |
|
2083
|
489 print_usage ("system"); |
|
1683
|
490 |
|
|
491 return retval; |
|
|
492 } |
|
|
493 |
|
|
494 DEFALIAS (shell_cmd, system); |
|
|
495 |
|
2614
|
496 // XXX FIXME XXX -- this should really be static, but that causes |
|
|
497 // problems on some systems. |
|
|
498 SLStack<string> octave_atexit_functions; |
|
2077
|
499 |
|
|
500 void |
|
|
501 do_octave_atexit (void) |
|
|
502 { |
|
3216
|
503 static bool deja_vu = false; |
|
|
504 |
|
2077
|
505 while (! octave_atexit_functions.empty ()) |
|
|
506 { |
|
2086
|
507 octave_value_list fcn = octave_atexit_functions.pop (); |
|
2077
|
508 |
|
2942
|
509 feval (fcn, 0); |
|
3215
|
510 |
|
|
511 flush_octave_stdout (); |
|
2077
|
512 } |
|
3216
|
513 |
|
|
514 if (! deja_vu) |
|
|
515 { |
|
|
516 deja_vu = true; |
|
|
517 |
|
|
518 command_editor::restore_terminal_state (); |
|
|
519 |
|
|
520 // XXX FIXME XXX -- is this needed? Can it cause any trouble? |
|
|
521 raw_mode (0); |
|
|
522 |
|
|
523 command_history::clean_up_and_save (); |
|
|
524 |
|
|
525 close_plot_stream (); |
|
|
526 |
|
|
527 close_files (); |
|
|
528 |
|
|
529 cleanup_tmp_files (); |
|
|
530 |
|
|
531 flush_octave_stdout (); |
|
|
532 |
|
|
533 if (!quitting_gracefully && (interactive || forced_interactive)) |
|
|
534 cout << "\n"; |
|
|
535 } |
|
2077
|
536 } |
|
|
537 |
|
2162
|
538 DEFUN (atexit, args, , |
|
3332
|
539 "-*- texinfo -*-\n\ |
|
|
540 @deftypefn {Built-in Function} {} atexit (@var{fcn})\n\ |
|
|
541 Register a function to be called when Octave exits. For example,\n\ |
|
2077
|
542 \n\ |
|
3332
|
543 @example\n\ |
|
|
544 @group\n\ |
|
|
545 function print_flops_at_exit ()\n\ |
|
|
546 printf (\"\\n%s\\n\", system (\"fortune\"));\n\ |
|
|
547 fflush (stdout);\n\ |
|
|
548 endfunction\n\ |
|
|
549 atexit (\"print_flops_at_exit\");\n\ |
|
|
550 @end group\n\ |
|
|
551 @end example\n\ |
|
|
552 \n\ |
|
|
553 @noindent\n\ |
|
|
554 will print a message when Octave exits.\n\ |
|
3333
|
555 @end deftypefn") |
|
2077
|
556 { |
|
2086
|
557 octave_value_list retval; |
|
2077
|
558 |
|
|
559 int nargin = args.length (); |
|
|
560 |
|
|
561 if (nargin == 1) |
|
|
562 { |
|
2475
|
563 #if defined (HAVE_ATEXIT) || defined (HAVE_ON_EXIT) |
|
2077
|
564 string arg = args(0).string_value (); |
|
|
565 |
|
|
566 if (! error_state) |
|
|
567 octave_atexit_functions.push (arg); |
|
|
568 else |
|
|
569 error ("atexit: argument must be a string"); |
|
2475
|
570 #else |
|
|
571 gripe_not_supported ("atexit"); |
|
|
572 #endif |
|
2077
|
573 } |
|
|
574 else |
|
|
575 print_usage ("atexit"); |
|
|
576 |
|
|
577 return retval; |
|
|
578 } |
|
|
579 |
|
2689
|
580 DEFUN (octave_config_info, args, , |
|
3301
|
581 "-*- texinfo -*-\n\ |
|
|
582 @deftypefn {Built-in Function} {} octave_config_info (@var{option})\n\ |
|
|
583 Return a structure containing configuration and installation\n\ |
|
|
584 information for Octave.\n\ |
|
2689
|
585 \n\ |
|
3301
|
586 if @var{option} is a string, return the configuration information for the\n\ |
|
2689
|
587 specified option.\n\ |
|
|
588 \n\ |
|
3301
|
589 @end deftypefn") |
|
2162
|
590 { |
|
2689
|
591 octave_value retval; |
|
|
592 |
|
2696
|
593 #if defined (WITH_DYNAMIC_LINKING) && (defined (WITH_DL) || defined (WITH_SHL)) |
|
2689
|
594 bool octave_supports_dynamic_linking = true; |
|
|
595 #else |
|
|
596 bool octave_supports_dynamic_linking = false; |
|
|
597 #endif |
|
|
598 |
|
2162
|
599 Octave_map m; |
|
|
600 |
|
3141
|
601 // XXX FIXME XXX -- should we perform OCTAVE_HOME substitution on these? |
|
|
602 |
|
2162
|
603 m ["default_pager"] = DEFAULT_PAGER; |
|
|
604 m ["prefix"] = OCTAVE_PREFIX; |
|
|
605 m ["exec_prefix"] = OCTAVE_EXEC_PREFIX; |
|
|
606 m ["datadir"] = OCTAVE_DATADIR; |
|
2800
|
607 m ["dld"] = static_cast<double> (octave_supports_dynamic_linking); |
|
2162
|
608 m ["libdir"] = OCTAVE_LIBDIR; |
|
|
609 m ["bindir"] = OCTAVE_BINDIR; |
|
|
610 m ["infodir"] = OCTAVE_INFODIR; |
|
|
611 m ["fcnfiledir"] = OCTAVE_FCNFILEDIR; |
|
|
612 m ["localfcnfiledir"] = OCTAVE_LOCALFCNFILEDIR; |
|
|
613 m ["localstartupfiledir"] = OCTAVE_LOCALSTARTUPFILEDIR; |
|
|
614 m ["startupfiledir"] = OCTAVE_STARTUPFILEDIR; |
|
|
615 m ["localfcnfilepath"] = OCTAVE_LOCALFCNFILEPATH; |
|
|
616 m ["archlibdir"] = OCTAVE_ARCHLIBDIR; |
|
2439
|
617 m ["localarchlibdir"] = OCTAVE_LOCALARCHLIBDIR; |
|
2162
|
618 m ["octfiledir"] = OCTAVE_OCTFILEDIR; |
|
|
619 m ["localoctfilepath"] = OCTAVE_LOCALOCTFILEPATH; |
|
|
620 m ["fcnfilepath"] = OCTAVE_FCNFILEPATH; |
|
|
621 m ["imagepath"] = OCTAVE_IMAGEPATH; |
|
3234
|
622 m ["canonical_host_type"] = CANONICAL_HOST_TYPE; |
|
2162
|
623 m ["configure_options"] = config_opts; |
|
|
624 m ["F77"] = F77; |
|
|
625 m ["FFLAGS"] = FFLAGS; |
|
|
626 m ["FPICFLAG"] = FPICFLAG; |
|
|
627 m ["F2C"] = F2C; |
|
|
628 m ["F2CFLAGS"] = F2CFLAGS; |
|
|
629 m ["FLIBS"] = FLIBS; |
|
|
630 m ["CPPFLAGS"] = CPPFLAGS; |
|
|
631 m ["INCFLAGS"] = INCFLAGS; |
|
|
632 m ["CC"] = CC " " CC_VERSION; |
|
|
633 m ["CFLAGS"] = CFLAGS; |
|
|
634 m ["CPICFLAG"] = CPICFLAG; |
|
|
635 m ["CXX"] = CXX " " CXX_VERSION; |
|
|
636 m ["CXXFLAGS"] = CXXFLAGS; |
|
|
637 m ["CXXPICFLAG"] = CXXPICFLAG; |
|
|
638 m ["LDFLAGS"] = LDFLAGS; |
|
|
639 m ["LIBFLAGS"] = LIBFLAGS; |
|
2675
|
640 m ["RLD_FLAG"] = RLD_FLAG; |
|
2162
|
641 m ["TERMLIBS"] = TERMLIBS; |
|
|
642 m ["LIBS"] = LIBS; |
|
|
643 m ["LEXLIB"] = LEXLIB; |
|
|
644 m ["LIBPLPLOT"] = LIBPLPLOT; |
|
|
645 m ["LIBDLFCN"] = LIBDLFCN; |
|
|
646 m ["DEFS"] = DEFS; |
|
|
647 |
|
2689
|
648 int nargin = args.length (); |
|
|
649 |
|
|
650 if (nargin == 1) |
|
|
651 { |
|
|
652 string arg = args(0).string_value (); |
|
|
653 |
|
|
654 if (! error_state) |
|
|
655 retval = octave_value (m [arg.c_str ()]); |
|
|
656 } |
|
|
657 else if (nargin == 0) |
|
|
658 retval = octave_value (m); |
|
|
659 else |
|
|
660 print_usage ("octave_config_info"); |
|
|
661 |
|
|
662 return retval; |
|
2162
|
663 } |
|
|
664 |
|
1683
|
665 #if defined (__GNUG__) && defined (DEBUG_NEW_DELETE) |
|
2806
|
666 |
|
1683
|
667 int debug_new_delete = 0; |
|
|
668 |
|
|
669 typedef void (*vfp)(void); |
|
|
670 extern vfp __new_handler; |
|
|
671 |
|
|
672 void * |
|
|
673 __builtin_new (size_t sz) |
|
|
674 { |
|
|
675 void *p; |
|
|
676 |
|
|
677 /* malloc (0) is unpredictable; avoid it. */ |
|
|
678 if (sz == 0) |
|
|
679 sz = 1; |
|
2800
|
680 p = malloc (sz); |
|
1683
|
681 while (p == 0) |
|
|
682 { |
|
|
683 (*__new_handler) (); |
|
2800
|
684 p = malloc (sz); |
|
1683
|
685 } |
|
|
686 |
|
|
687 if (debug_new_delete) |
|
|
688 cout << "__builtin_new: " << p << endl; |
|
|
689 |
|
|
690 return p; |
|
|
691 } |
|
|
692 |
|
|
693 void |
|
|
694 __builtin_delete (void *ptr) |
|
|
695 { |
|
|
696 if (debug_new_delete) |
|
|
697 cout << "__builtin_delete: " << ptr << endl; |
|
|
698 |
|
|
699 if (ptr) |
|
|
700 free (ptr); |
|
|
701 } |
|
2806
|
702 |
|
1683
|
703 #endif |
|
|
704 |
|
2806
|
705 void |
|
|
706 symbols_of_toplev (void) |
|
|
707 { |
|
3141
|
708 DEFCONST (argv, , |
|
3332
|
709 "-*- texinfo -*-\n\ |
|
|
710 @defvr {Built-in Variable} argv\n\ |
|
|
711 The command line arguments passed to Octave are available in this\n\ |
|
|
712 variable. For example, if you invoked Octave using the command\n\ |
|
|
713 \n\ |
|
|
714 @example\n\ |
|
|
715 octave --no-line-editing --silent\n\ |
|
|
716 @end example\n\ |
|
|
717 \n\ |
|
|
718 @noindent\n\ |
|
|
719 @code{argv} would be a list of strings with the elements\n\ |
|
|
720 @code{--no-line-editing} and @code{--silent}.\n\ |
|
|
721 \n\ |
|
|
722 If you write an executable Octave script, @code{argv} will contain the\n\ |
|
|
723 list of arguments passed to the script. @pxref{Executable Octave Programs}.\n\ |
|
3333
|
724 @end defvr"); |
|
2806
|
725 |
|
3020
|
726 DEFCONST (program_invocation_name, |
|
3141
|
727 octave_env::get_program_invocation_name (), |
|
3332
|
728 "-*- texinfo -*-\n\ |
|
|
729 @defvr {Built-in Variable} program_invocation_name\n\ |
|
|
730 @defvrx {Built-in Variable} program_name\n\ |
|
|
731 When Octave starts, the value of the built-in variable\n\ |
|
|
732 @code{program_invocation_name} is automatically set to the name that was\n\ |
|
|
733 typed at the shell prompt to run Octave, and the value of\n\ |
|
|
734 @code{program_name} is automatically set to the final component of\n\ |
|
|
735 @code{program_invocation_name}. For example, if you typed\n\ |
|
|
736 @samp{@value{OCTAVEHOME}/bin/octave} to start Octave,\n\ |
|
|
737 @code{program_invocation_name} would have the value\n\ |
|
|
738 @code{\"@value{OCTAVEHOME}/bin/octave\"}, and @code{program_name} would\n\ |
|
|
739 have the value @code{\"octave\"}.\n\ |
|
|
740 \n\ |
|
|
741 If executing a script from the command line (e.g., @code{octave foo.m})\n\ |
|
|
742 or using an executable Octave script, the program name is set to the\n\ |
|
|
743 name of the script. @xref{Executable Octave Programs} for an example of\n\ |
|
|
744 how to create an executable Octave script.\n\ |
|
3333
|
745 @end defvr"); |
|
3020
|
746 |
|
3141
|
747 DEFCONST (program_name, octave_env::get_program_name (), |
|
3332
|
748 "-*- texinfo -*-\n\ |
|
|
749 @defvr {Built-in Variable} program_invocation_name\n\ |
|
|
750 @defvrx {Built-in Variable} program_name\n\ |
|
|
751 When Octave starts, the value of the built-in variable\n\ |
|
|
752 @code{program_invocation_name} is automatically set to the name that was\n\ |
|
|
753 typed at the shell prompt to run Octave, and the value of\n\ |
|
|
754 @code{program_name} is automatically set to the final component of\n\ |
|
|
755 @code{program_invocation_name}. For example, if you typed\n\ |
|
|
756 @samp{@value{OCTAVEHOME}/bin/octave} to start Octave,\n\ |
|
|
757 @code{program_invocation_name} would have the value\n\ |
|
|
758 @code{\"@value{OCTAVEHOME}/bin/octave\"}, and @code{program_name} would\n\ |
|
|
759 have the value @code{\"octave\"}.\n\ |
|
|
760 \n\ |
|
|
761 If executing a script from the command line (e.g., @code{octave foo.m})\n\ |
|
|
762 or using an executable Octave script, the program name is set to the\n\ |
|
|
763 name of the script. @xref{Executable Octave Programs} for an example of\n\ |
|
|
764 how to create an executable Octave script.\n\ |
|
3333
|
765 @end defvr"); |
|
|
766 |
|
2806
|
767 } |
|
|
768 |
|
1683
|
769 /* |
|
|
770 ;;; Local Variables: *** |
|
|
771 ;;; mode: C++ *** |
|
|
772 ;;; End: *** |
|
|
773 */ |
