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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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3503
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33 #include <fstream> |
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34 #include <iostream> |
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35 #include <strstream> |
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1728
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36 #include <string> |
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37 |
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38 #ifdef HAVE_UNISTD_H |
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2442
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39 #ifdef HAVE_SYS_TYPES_H |
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40 #include <sys/types.h> |
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2442
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41 #endif |
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42 #include <unistd.h> |
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43 #endif |
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44 |
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2926
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45 #include "cmd-edit.h" |
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46 #include "file-ops.h" |
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1683
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47 #include "lo-error.h" |
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2370
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48 #include "lo-mappers.h" |
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3020
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49 #include "oct-env.h" |
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1755
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50 #include "str-vec.h" |
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51 |
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2492
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52 #include <defaults.h> |
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53 #include "defun.h" |
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54 #include "error.h" |
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55 #include "file-io.h" |
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56 #include "input.h" |
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57 #include "lex.h" |
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2492
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58 #include <oct-conf.h> |
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1742
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59 #include "oct-hist.h" |
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2162
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60 #include "oct-map.h" |
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2862
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61 #include "oct-obj.h" |
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62 #include "pager.h" |
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63 #include "parse.h" |
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64 #include "pathsearch.h" |
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65 #include "procstream.h" |
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2370
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66 #include "ov.h" |
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2985
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67 #include "pt-jump.h" |
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1750
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68 #include "pt-plot.h" |
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2982
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69 #include "pt-stmt.h" |
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70 #include "sighandlers.h" |
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71 #include "sysdep.h" |
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2693
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72 #include "syswait.h" |
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1750
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73 #include "toplev.h" |
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74 #include "unwind-prot.h" |
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75 #include "utils.h" |
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76 #include "variables.h" |
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2492
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77 #include <version.h> |
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78 |
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79 // TRUE means we are exiting via the builtin exit or quit functions. |
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80 static bool quitting_gracefully = false; |
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81 |
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82 // Current command to execute. |
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83 tree_statement_list *global_command = 0; |
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84 |
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85 // Pointer to function that is currently being evaluated. |
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86 octave_user_function *curr_function = 0; |
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87 |
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1907
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88 // Top level context (?) |
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89 jmp_buf toplevel; |
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90 |
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91 int |
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92 main_loop (void) |
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93 { |
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94 // Allow the user to interrupt us without exiting. |
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95 |
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96 octave_save_signal_mask (); |
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97 |
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98 if (setjmp (toplevel) != 0) |
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99 { |
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100 raw_mode (0); |
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101 |
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102 cout << "\n"; |
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103 |
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104 octave_restore_signal_mask (); |
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1907
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105 } |
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106 |
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107 can_interrupt = true; |
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108 |
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109 octave_catch_interrupts (); |
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110 |
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111 // The big loop. |
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112 |
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113 int retval; |
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114 do |
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115 { |
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116 curr_sym_tab = top_level_sym_tab; |
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117 |
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118 reset_parser (); |
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119 |
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120 retval = yyparse (); |
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121 |
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122 if (retval == 0 && global_command) |
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123 { |
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2898
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124 global_command->eval (); |
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125 |
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126 delete global_command; |
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127 |
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128 global_command = 0; |
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129 |
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130 if (! (interactive || forced_interactive)) |
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131 { |
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132 bool quit = (tree_return_command::returning |
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133 || tree_break_command::breaking); |
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134 |
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135 if (tree_return_command::returning) |
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136 tree_return_command::returning = 0; |
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137 |
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138 if (tree_break_command::breaking) |
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139 tree_break_command::breaking--; |
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140 |
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141 if (quit) |
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142 break; |
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143 } |
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144 |
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145 if (error_state) |
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146 { |
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147 if (! (interactive || forced_interactive)) |
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148 break; |
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149 } |
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2299
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150 else |
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2620
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151 { |
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152 if (octave_completion_matches_called) |
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153 octave_completion_matches_called = false; |
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154 else |
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2973
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155 command_editor::increment_current_command_number (); |
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2620
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156 } |
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1907
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157 } |
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158 } |
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159 while (retval == 0); |
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160 |
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161 return retval; |
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162 } |
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163 |
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164 // Fix up things before exiting. |
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165 |
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166 void |
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3162
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167 clean_up_and_exit (int retval) |
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168 { |
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3216
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169 do_octave_atexit (); |
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170 |
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3162
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171 exit (retval == EOF ? 0 : retval); |
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172 } |
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173 |
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1957
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174 DEFUN_TEXT (casesen, args, , |
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175 "-*- texinfo -*-\n\ |
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176 @deffn {Command} casesen arg\n\ |
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177 Provided for compatibility with Matlab, but does nothing.\n\ |
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178 @end deffn") |
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179 { |
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180 octave_value_list retval; |
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181 |
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182 int argc = args.length () + 1; |
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183 |
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1965
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184 string_vector argv = args.make_argv ("casesen"); |
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185 |
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186 if (error_state) |
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187 return retval; |
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188 |
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189 if (argc == 1 || (argc > 1 && argv[1] == "off")) |
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190 warning ("casesen: sorry, Octave is always case sensitive"); |
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191 else if (argc > 1 && argv[1] == "on") |
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192 ; // ok. |
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193 else |
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194 print_usage ("casesen"); |
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195 |
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196 return retval; |
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197 } |
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198 |
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1957
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199 DEFUN (computer, args, nargout, |
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200 "-*- texinfo -*-\n\ |
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201 @deftypefn {Built-in Function} {} computer ()\n\ |
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202 Print or return a string of the form @var{cpu}-@var{vendor}-@var{os}\n\ |
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203 that identifies the kind of computer Octave is running on. If invoked\n\ |
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204 with an output argument, the value is returned instead of printed. For\n\ |
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205 example,\n\ |
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206 \n\ |
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207 @example\n\ |
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208 @group\n\ |
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209 computer ()\n\ |
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210 @print{} i586-pc-linux-gnu\n\ |
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211 \n\ |
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212 x = computer ()\n\ |
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213 @result{} x = \"i586-pc-linux-gnu\"\n\ |
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214 @end group\n\ |
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215 @end example\n\ |
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216 @end deftypefn") |
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217 { |
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218 octave_value_list retval; |
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219 |
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220 int nargin = args.length (); |
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221 |
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222 if (nargin != 0) |
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223 warning ("computer: ignoring extra arguments"); |
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224 |
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225 string msg; |
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226 |
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3234
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227 if (strcmp (CANONICAL_HOST_TYPE, "unknown") == 0) |
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228 msg = "Hi Dave, I'm a HAL-9000"; |
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229 else |
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3234
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230 msg = CANONICAL_HOST_TYPE; |
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231 |
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232 if (nargout == 0) |
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233 octave_stdout << msg << "\n"; |
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234 else |
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235 retval = msg; |
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236 |
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237 return retval; |
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238 } |
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239 |
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3180
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240 DEFUN (quit, args, nargout, |
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3332
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241 "-*- texinfo -*-\n\ |
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242 @deftypefn {Built-in Function} {} exit (@var{status})\n\ |
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243 @deftypefnx {Built-in Function} {} quit (@var{status})\n\ |
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244 Exit the current Octave session. If the optional integer value\n\ |
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245 @var{status} is supplied, pass that value to the operating system as the\n\ |
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246 Octave's exit status.\n\ |
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3333
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247 @end deftypefn") |
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248 { |
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249 octave_value_list retval; |
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2068
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250 |
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3180
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251 if (nargout == 0) |
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2068
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252 { |
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3180
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253 int exit_status = 0; |
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254 |
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255 quitting_gracefully = true; |
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256 |
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3180
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257 if (args.length () > 0) |
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258 { |
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3202
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259 int tmp = args(0).nint_value (); |
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260 |
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3202
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261 if (! error_state) |
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262 exit_status = tmp; |
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3180
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263 } |
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264 |
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265 clean_up_and_exit (exit_status); |
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2068
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266 } |
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3180
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267 else |
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268 error ("quit: invalid number of output arguments"); |
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2068
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269 |
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270 return retval; |
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271 } |
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272 |
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273 DEFALIAS (exit, quit); |
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274 |
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1957
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275 DEFUN (warranty, , , |
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276 "-*- texinfo -*-\n\ |
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277 @deftypefn {Built-in Function} {} warranty ()\n\ |
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278 Describe the conditions for copying and distributing Octave.\n\ |
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279 @end deftypefn") |
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280 { |
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281 octave_value_list retval; |
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282 |
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283 octave_stdout << "\n" OCTAVE_NAME_VERSION_AND_COPYRIGHT "\n\n\ |
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284 This program is free software; you can redistribute it and/or modify\n\ |
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285 it under the terms of the GNU General Public License as published by\n\ |
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286 the Free Software Foundation; either version 2 of the License, or\n\ |
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287 (at your option) any later version.\n\ |
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288 \n\ |
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289 This program is distributed in the hope that it will be useful,\n\ |
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290 but WITHOUT ANY WARRANTY; without even the implied warranty of\n\ |
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291 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n\ |
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292 GNU General Public License for more details.\n\ |
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293 \n\ |
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294 You should have received a copy of the GNU General Public License\n\ |
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295 along with this program. If not, write to the Free Software\n\ |
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296 Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.\n\ |
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297 \n"; |
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298 |
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299 return retval; |
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300 } |
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301 |
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302 // Execute a shell command. |
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303 |
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1965
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304 static void |
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305 cleanup_iprocstream (void *p) |
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306 { |
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3060
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307 iprocstream *cmd = static_cast<iprocstream *> (p); |
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308 |
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309 octave_child_list::remove (cmd->pid ()); |
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310 |
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311 delete cmd; |
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1965
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312 } |
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313 |
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2086
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314 static octave_value_list |
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2321
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315 run_command_and_return_output (const string& cmd_str) |
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316 { |
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2086
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317 octave_value_list retval; |
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318 |
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319 iprocstream *cmd = new iprocstream (cmd_str.c_str ()); |
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320 |
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3060
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321 if (cmd) |
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322 { |
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3060
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323 unwind_protect::add (cleanup_iprocstream, cmd); |
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324 |
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325 if (*cmd) |
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326 { |
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327 ostrstream output_buf; |
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2095
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328 |
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3147
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329 // XXX FIXME XXX -- sometimes, the subprocess hasn't written |
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330 // anything before we try to read from the procstream. The |
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331 // kluge below (simply waiting and trying again) is ugly, |
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332 // but it seems to work, at least most of the time. It |
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333 // could probably still fail if the subprocess hasn't |
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334 // started writing after the snooze. Isn't there a better |
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335 // way? If there is, you should also fix the code for the |
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336 // ls function in dirfns.cc. |
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337 |
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3060
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338 char ch; |
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3147
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339 |
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340 if (cmd->get (ch)) |
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341 output_buf.put (ch); |
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342 else |
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343 { |
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344 cmd->clear (); |
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345 |
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3308
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346 octave_usleep (100); |
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3147
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347 } |
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348 |
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3060
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349 while (cmd->get (ch)) |
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350 output_buf.put (ch); |
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351 |
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3252
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352 int cmd_status = cmd->close (); |
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353 |
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3060
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354 if (WIFEXITED (cmd_status)) |
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355 cmd_status = WEXITSTATUS (cmd_status); |
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356 else |
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357 cmd_status = 127; |
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358 |
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3060
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359 output_buf << ends; |
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2145
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360 |
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3060
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361 char *msg = output_buf.str (); |
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362 |
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3060
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363 retval(1) = (double) cmd_status; |
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364 retval(0) = msg; |
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365 |
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3060
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366 delete [] msg; |
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367 } |
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368 |
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369 unwind_protect::run (); |
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370 } |
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371 else |
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372 error ("unable to start subprocess for `%s'", cmd_str.c_str ()); |
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373 |
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374 return retval; |
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375 } |
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376 |
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1957
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377 DEFUN (system, args, nargout, |
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3301
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378 "-*- texinfo -*-\n\ |
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379 @deftypefn {Built-in Function} {} system (@var{string}, @var{return_output}, @var{type})\n\ |
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380 Execute a shell command specified by @var{string}. The second\n\ |
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381 argument is optional. If @var{type} is @code{\"async\"}, the process\n\ |
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382 is started in the background and the process id of the child process\n\ |
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383 is returned immediately. Otherwise, the process is started, and\n\ |
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384 Octave waits until it exits. If @var{type} argument is omitted, a\n\ |
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385 value of @code{\"sync\"} is assumed.\n\ |
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2083
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386 \n\ |
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3301
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387 If two input arguments are given (the actual value of\n\ |
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388 @var{return_output} is irrelevant) and the subprocess is started\n\ |
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389 synchronously, or if @var{system} is called with one input argument and\n\ |
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390 one or more output arguments, the output from the command is returned.\n\ |
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2083
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391 Otherwise, if the subprocess is executed synchronously, it's output is\n\ |
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2321
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392 sent to the standard output. To send the output of a command executed\n\ |
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3301
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393 with @var{system} through the pager, use a command like\n\ |
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2321
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394 \n\ |
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3301
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395 @example\n\ |
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396 disp (system (cmd, 1));\n\ |
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397 @end example\n\ |
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2321
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398 \n\ |
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3301
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399 @noindent\n\ |
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2321
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400 or\n\ |
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401 \n\ |
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3301
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402 @example\n\ |
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403 printf (\"%s\n\", system (cmd, 1));\n\ |
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404 @end example\n\ |
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405 \n\ |
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406 The @code{system} function can return two values. The first is any\n\ |
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407 output from the command that was written to the standard output stream,\n\ |
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408 and the second is the output status of the command. For example,\n\ |
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409 \n\ |
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410 @example\n\ |
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411 [output, status] = system (\"echo foo; exit 2\");\n\ |
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412 @end example\n\ |
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413 \n\ |
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414 @noindent\n\ |
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415 will set the variable @code{output} to the string @samp{foo}, and the\n\ |
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416 variable @code{status} to the integer @samp{2}.\n\ |
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417 @end deftypefn") |
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1683
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418 { |
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2086
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419 octave_value_list retval; |
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1683
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420 |
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421 int nargin = args.length (); |
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422 |
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2083
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423 if (nargin > 0 && nargin < 4) |
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1683
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424 { |
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2083
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425 bool return_output = (nargout > 0 || nargin > 1); |
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426 |
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427 string cmd_str = args(0).string_value (); |
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428 |
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429 enum exec_type { sync, async }; |
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430 |
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431 exec_type type = sync; |
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432 |
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433 if (! error_state) |
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434 { |
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435 if (nargin > 2) |
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436 { |
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437 string type_str = args(2).string_value (); |
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1683
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438 |
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2083
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439 if (! error_state) |
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440 { |
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441 if (type_str == "sync") |
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442 type = sync; |
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443 else if (type_str == "async") |
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444 type = async; |
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445 else |
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446 error ("system: third arg must be \"sync\" or \"async\""); |
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447 } |
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448 else |
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449 error ("system: third argument must be a string"); |
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450 } |
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451 } |
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|
452 else |
|
|
453 error ("system: expecting string as first argument"); |
|
1683
|
454 |
|
2083
|
455 if (! error_state) |
|
|
456 { |
|
|
457 if (type == async) |
|
|
458 { |
|
|
459 pid_t pid = fork (); |
|
|
460 |
|
|
461 if (pid < 0) |
|
|
462 error ("system: fork failed -- can't create child process"); |
|
|
463 else if (pid == 0) |
|
|
464 { |
|
3273
|
465 // XXX FIXME XXX -- should probably replace this |
|
|
466 // call with something portable. |
|
|
467 |
|
|
468 execl ("/bin/sh", "sh", "-c", cmd_str.c_str (), 0); |
|
|
469 |
|
|
470 panic_impossible (); |
|
2083
|
471 } |
|
|
472 else |
|
2800
|
473 retval(0) = static_cast<double> (pid); |
|
2083
|
474 } |
|
2321
|
475 else if (return_output) |
|
|
476 retval = run_command_and_return_output (cmd_str); |
|
2083
|
477 else |
|
2321
|
478 { |
|
|
479 int status = system (cmd_str.c_str ()); |
|
|
480 |
|
|
481 // The value in status is as returned by waitpid. If |
|
|
482 // the process exited normally, extract the actual exit |
|
|
483 // status of the command. Otherwise, return 127 as a |
|
|
484 // failure code. |
|
|
485 |
|
2693
|
486 if (WIFEXITED (status)) |
|
|
487 status = WEXITSTATUS (status); |
|
2321
|
488 |
|
2800
|
489 retval = static_cast<double> (status); |
|
2321
|
490 } |
|
2083
|
491 } |
|
1683
|
492 } |
|
|
493 else |
|
2083
|
494 print_usage ("system"); |
|
1683
|
495 |
|
|
496 return retval; |
|
|
497 } |
|
|
498 |
|
|
499 DEFALIAS (shell_cmd, system); |
|
|
500 |
|
2614
|
501 // XXX FIXME XXX -- this should really be static, but that causes |
|
|
502 // problems on some systems. |
|
|
503 SLStack<string> octave_atexit_functions; |
|
2077
|
504 |
|
|
505 void |
|
|
506 do_octave_atexit (void) |
|
|
507 { |
|
3216
|
508 static bool deja_vu = false; |
|
|
509 |
|
2077
|
510 while (! octave_atexit_functions.empty ()) |
|
|
511 { |
|
2086
|
512 octave_value_list fcn = octave_atexit_functions.pop (); |
|
2077
|
513 |
|
2942
|
514 feval (fcn, 0); |
|
3215
|
515 |
|
|
516 flush_octave_stdout (); |
|
2077
|
517 } |
|
3216
|
518 |
|
|
519 if (! deja_vu) |
|
|
520 { |
|
|
521 deja_vu = true; |
|
|
522 |
|
|
523 command_editor::restore_terminal_state (); |
|
|
524 |
|
|
525 // XXX FIXME XXX -- is this needed? Can it cause any trouble? |
|
|
526 raw_mode (0); |
|
|
527 |
|
|
528 command_history::clean_up_and_save (); |
|
|
529 |
|
|
530 close_plot_stream (); |
|
|
531 |
|
|
532 close_files (); |
|
|
533 |
|
|
534 cleanup_tmp_files (); |
|
|
535 |
|
|
536 flush_octave_stdout (); |
|
|
537 |
|
|
538 if (!quitting_gracefully && (interactive || forced_interactive)) |
|
|
539 cout << "\n"; |
|
|
540 } |
|
2077
|
541 } |
|
|
542 |
|
2162
|
543 DEFUN (atexit, args, , |
|
3332
|
544 "-*- texinfo -*-\n\ |
|
|
545 @deftypefn {Built-in Function} {} atexit (@var{fcn})\n\ |
|
|
546 Register a function to be called when Octave exits. For example,\n\ |
|
2077
|
547 \n\ |
|
3332
|
548 @example\n\ |
|
|
549 @group\n\ |
|
|
550 function print_flops_at_exit ()\n\ |
|
|
551 printf (\"\\n%s\\n\", system (\"fortune\"));\n\ |
|
|
552 fflush (stdout);\n\ |
|
|
553 endfunction\n\ |
|
|
554 atexit (\"print_flops_at_exit\");\n\ |
|
|
555 @end group\n\ |
|
|
556 @end example\n\ |
|
|
557 \n\ |
|
|
558 @noindent\n\ |
|
|
559 will print a message when Octave exits.\n\ |
|
3333
|
560 @end deftypefn") |
|
2077
|
561 { |
|
2086
|
562 octave_value_list retval; |
|
2077
|
563 |
|
|
564 int nargin = args.length (); |
|
|
565 |
|
|
566 if (nargin == 1) |
|
|
567 { |
|
2475
|
568 #if defined (HAVE_ATEXIT) || defined (HAVE_ON_EXIT) |
|
2077
|
569 string arg = args(0).string_value (); |
|
|
570 |
|
|
571 if (! error_state) |
|
|
572 octave_atexit_functions.push (arg); |
|
|
573 else |
|
|
574 error ("atexit: argument must be a string"); |
|
2475
|
575 #else |
|
|
576 gripe_not_supported ("atexit"); |
|
|
577 #endif |
|
2077
|
578 } |
|
|
579 else |
|
|
580 print_usage ("atexit"); |
|
|
581 |
|
|
582 return retval; |
|
|
583 } |
|
|
584 |
|
2689
|
585 DEFUN (octave_config_info, args, , |
|
3301
|
586 "-*- texinfo -*-\n\ |
|
|
587 @deftypefn {Built-in Function} {} octave_config_info (@var{option})\n\ |
|
|
588 Return a structure containing configuration and installation\n\ |
|
|
589 information for Octave.\n\ |
|
2689
|
590 \n\ |
|
3301
|
591 if @var{option} is a string, return the configuration information for the\n\ |
|
2689
|
592 specified option.\n\ |
|
|
593 \n\ |
|
3301
|
594 @end deftypefn") |
|
2162
|
595 { |
|
2689
|
596 octave_value retval; |
|
|
597 |
|
2696
|
598 #if defined (WITH_DYNAMIC_LINKING) && (defined (WITH_DL) || defined (WITH_SHL)) |
|
2689
|
599 bool octave_supports_dynamic_linking = true; |
|
|
600 #else |
|
|
601 bool octave_supports_dynamic_linking = false; |
|
|
602 #endif |
|
|
603 |
|
2162
|
604 Octave_map m; |
|
|
605 |
|
3141
|
606 // XXX FIXME XXX -- should we perform OCTAVE_HOME substitution on these? |
|
|
607 |
|
2162
|
608 m ["default_pager"] = DEFAULT_PAGER; |
|
|
609 m ["prefix"] = OCTAVE_PREFIX; |
|
|
610 m ["exec_prefix"] = OCTAVE_EXEC_PREFIX; |
|
|
611 m ["datadir"] = OCTAVE_DATADIR; |
|
2800
|
612 m ["dld"] = static_cast<double> (octave_supports_dynamic_linking); |
|
2162
|
613 m ["libdir"] = OCTAVE_LIBDIR; |
|
|
614 m ["bindir"] = OCTAVE_BINDIR; |
|
|
615 m ["infodir"] = OCTAVE_INFODIR; |
|
|
616 m ["fcnfiledir"] = OCTAVE_FCNFILEDIR; |
|
|
617 m ["localfcnfiledir"] = OCTAVE_LOCALFCNFILEDIR; |
|
|
618 m ["localstartupfiledir"] = OCTAVE_LOCALSTARTUPFILEDIR; |
|
|
619 m ["startupfiledir"] = OCTAVE_STARTUPFILEDIR; |
|
|
620 m ["localfcnfilepath"] = OCTAVE_LOCALFCNFILEPATH; |
|
|
621 m ["archlibdir"] = OCTAVE_ARCHLIBDIR; |
|
2439
|
622 m ["localarchlibdir"] = OCTAVE_LOCALARCHLIBDIR; |
|
2162
|
623 m ["octfiledir"] = OCTAVE_OCTFILEDIR; |
|
|
624 m ["localoctfilepath"] = OCTAVE_LOCALOCTFILEPATH; |
|
|
625 m ["fcnfilepath"] = OCTAVE_FCNFILEPATH; |
|
|
626 m ["imagepath"] = OCTAVE_IMAGEPATH; |
|
3234
|
627 m ["canonical_host_type"] = CANONICAL_HOST_TYPE; |
|
2162
|
628 m ["configure_options"] = config_opts; |
|
|
629 m ["F77"] = F77; |
|
|
630 m ["FFLAGS"] = FFLAGS; |
|
|
631 m ["FPICFLAG"] = FPICFLAG; |
|
|
632 m ["F2C"] = F2C; |
|
|
633 m ["F2CFLAGS"] = F2CFLAGS; |
|
|
634 m ["FLIBS"] = FLIBS; |
|
|
635 m ["CPPFLAGS"] = CPPFLAGS; |
|
|
636 m ["INCFLAGS"] = INCFLAGS; |
|
|
637 m ["CC"] = CC " " CC_VERSION; |
|
|
638 m ["CFLAGS"] = CFLAGS; |
|
|
639 m ["CPICFLAG"] = CPICFLAG; |
|
|
640 m ["CXX"] = CXX " " CXX_VERSION; |
|
|
641 m ["CXXFLAGS"] = CXXFLAGS; |
|
|
642 m ["CXXPICFLAG"] = CXXPICFLAG; |
|
|
643 m ["LDFLAGS"] = LDFLAGS; |
|
|
644 m ["LIBFLAGS"] = LIBFLAGS; |
|
2675
|
645 m ["RLD_FLAG"] = RLD_FLAG; |
|
2162
|
646 m ["TERMLIBS"] = TERMLIBS; |
|
|
647 m ["LIBS"] = LIBS; |
|
|
648 m ["LEXLIB"] = LEXLIB; |
|
|
649 m ["LIBPLPLOT"] = LIBPLPLOT; |
|
|
650 m ["LIBDLFCN"] = LIBDLFCN; |
|
|
651 m ["DEFS"] = DEFS; |
|
|
652 |
|
2689
|
653 int nargin = args.length (); |
|
|
654 |
|
|
655 if (nargin == 1) |
|
|
656 { |
|
|
657 string arg = args(0).string_value (); |
|
|
658 |
|
|
659 if (! error_state) |
|
|
660 retval = octave_value (m [arg.c_str ()]); |
|
|
661 } |
|
|
662 else if (nargin == 0) |
|
|
663 retval = octave_value (m); |
|
|
664 else |
|
|
665 print_usage ("octave_config_info"); |
|
|
666 |
|
|
667 return retval; |
|
2162
|
668 } |
|
|
669 |
|
1683
|
670 #if defined (__GNUG__) && defined (DEBUG_NEW_DELETE) |
|
2806
|
671 |
|
1683
|
672 int debug_new_delete = 0; |
|
|
673 |
|
|
674 typedef void (*vfp)(void); |
|
|
675 extern vfp __new_handler; |
|
|
676 |
|
|
677 void * |
|
|
678 __builtin_new (size_t sz) |
|
|
679 { |
|
|
680 void *p; |
|
|
681 |
|
|
682 /* malloc (0) is unpredictable; avoid it. */ |
|
|
683 if (sz == 0) |
|
|
684 sz = 1; |
|
2800
|
685 p = malloc (sz); |
|
1683
|
686 while (p == 0) |
|
|
687 { |
|
|
688 (*__new_handler) (); |
|
2800
|
689 p = malloc (sz); |
|
1683
|
690 } |
|
|
691 |
|
|
692 if (debug_new_delete) |
|
|
693 cout << "__builtin_new: " << p << endl; |
|
|
694 |
|
|
695 return p; |
|
|
696 } |
|
|
697 |
|
|
698 void |
|
|
699 __builtin_delete (void *ptr) |
|
|
700 { |
|
|
701 if (debug_new_delete) |
|
|
702 cout << "__builtin_delete: " << ptr << endl; |
|
|
703 |
|
|
704 if (ptr) |
|
|
705 free (ptr); |
|
|
706 } |
|
2806
|
707 |
|
1683
|
708 #endif |
|
|
709 |
|
2806
|
710 void |
|
|
711 symbols_of_toplev (void) |
|
|
712 { |
|
3141
|
713 DEFCONST (argv, , |
|
3332
|
714 "-*- texinfo -*-\n\ |
|
|
715 @defvr {Built-in Variable} argv\n\ |
|
|
716 The command line arguments passed to Octave are available in this\n\ |
|
|
717 variable. For example, if you invoked Octave using the command\n\ |
|
|
718 \n\ |
|
|
719 @example\n\ |
|
|
720 octave --no-line-editing --silent\n\ |
|
|
721 @end example\n\ |
|
|
722 \n\ |
|
|
723 @noindent\n\ |
|
|
724 @code{argv} would be a list of strings with the elements\n\ |
|
|
725 @code{--no-line-editing} and @code{--silent}.\n\ |
|
|
726 \n\ |
|
|
727 If you write an executable Octave script, @code{argv} will contain the\n\ |
|
3402
|
728 list of arguments passed to the script. @xref{Executable Octave Programs},\n\ |
|
|
729 for an example of how to create an executable Octave script.\n\ |
|
3333
|
730 @end defvr"); |
|
2806
|
731 |
|
3020
|
732 DEFCONST (program_invocation_name, |
|
3141
|
733 octave_env::get_program_invocation_name (), |
|
3332
|
734 "-*- texinfo -*-\n\ |
|
|
735 @defvr {Built-in Variable} program_invocation_name\n\ |
|
|
736 @defvrx {Built-in Variable} program_name\n\ |
|
|
737 When Octave starts, the value of the built-in variable\n\ |
|
|
738 @code{program_invocation_name} is automatically set to the name that was\n\ |
|
|
739 typed at the shell prompt to run Octave, and the value of\n\ |
|
|
740 @code{program_name} is automatically set to the final component of\n\ |
|
|
741 @code{program_invocation_name}. For example, if you typed\n\ |
|
|
742 @samp{@value{OCTAVEHOME}/bin/octave} to start Octave,\n\ |
|
|
743 @code{program_invocation_name} would have the value\n\ |
|
|
744 @code{\"@value{OCTAVEHOME}/bin/octave\"}, and @code{program_name} would\n\ |
|
|
745 have the value @code{\"octave\"}.\n\ |
|
|
746 \n\ |
|
|
747 If executing a script from the command line (e.g., @code{octave foo.m})\n\ |
|
|
748 or using an executable Octave script, the program name is set to the\n\ |
|
3402
|
749 name of the script. @xref{Executable Octave Programs}, for an example of\n\ |
|
3332
|
750 how to create an executable Octave script.\n\ |
|
3333
|
751 @end defvr"); |
|
3020
|
752 |
|
3141
|
753 DEFCONST (program_name, octave_env::get_program_name (), |
|
3332
|
754 "-*- texinfo -*-\n\ |
|
|
755 @defvr {Built-in Variable} program_invocation_name\n\ |
|
|
756 @defvrx {Built-in Variable} program_name\n\ |
|
|
757 When Octave starts, the value of the built-in variable\n\ |
|
|
758 @code{program_invocation_name} is automatically set to the name that was\n\ |
|
|
759 typed at the shell prompt to run Octave, and the value of\n\ |
|
|
760 @code{program_name} is automatically set to the final component of\n\ |
|
|
761 @code{program_invocation_name}. For example, if you typed\n\ |
|
|
762 @samp{@value{OCTAVEHOME}/bin/octave} to start Octave,\n\ |
|
|
763 @code{program_invocation_name} would have the value\n\ |
|
|
764 @code{\"@value{OCTAVEHOME}/bin/octave\"}, and @code{program_name} would\n\ |
|
|
765 have the value @code{\"octave\"}.\n\ |
|
|
766 \n\ |
|
|
767 If executing a script from the command line (e.g., @code{octave foo.m})\n\ |
|
|
768 or using an executable Octave script, the program name is set to the\n\ |
|
3402
|
769 name of the script. @xref{Executable Octave Programs}, for an example of\n\ |
|
3332
|
770 how to create an executable Octave script.\n\ |
|
3333
|
771 @end defvr"); |
|
|
772 |
|
2806
|
773 } |
|
|
774 |
|
1683
|
775 /* |
|
|
776 ;;; Local Variables: *** |
|
|
777 ;;; mode: C++ *** |
|
|
778 ;;; End: *** |
|
|
779 */ |
