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1 /* |
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2 |
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3 Copyright (C) 1996, 1997 John W. Eaton |
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4 |
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5 This file is part of Octave. |
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6 |
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7 Octave is free software; you can redistribute it and/or modify it |
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8 under the terms of the GNU General Public License as published by the |
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9 Free Software Foundation; either version 2, or (at your option) any |
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10 later version. |
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11 |
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12 Octave is distributed in the hope that it will be useful, but WITHOUT |
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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15 for more details. |
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16 |
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17 You should have received a copy of the GNU General Public License |
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18 along with Octave; see the file COPYING. If not, write to the Free |
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19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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20 |
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21 */ |
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22 |
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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 #include <ctime> |
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33 |
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1728
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34 #include <string> |
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35 |
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36 #include <fstream.h> |
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37 #include <iostream.h> |
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38 #include <strstream.h> |
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39 |
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40 #ifdef HAVE_UNISTD_H |
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41 #ifdef HAVE_SYS_TYPES_H |
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42 #include <sys/types.h> |
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43 #endif |
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44 #include <unistd.h> |
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45 #endif |
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46 |
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2926
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47 #include "cmd-edit.h" |
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48 #include "file-ops.h" |
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49 #include "lo-error.h" |
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2370
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50 #include "lo-mappers.h" |
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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 "dynamic-ld.h" |
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56 #include "error.h" |
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57 #include "file-io.h" |
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58 #include "help.h" |
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59 #include "input.h" |
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60 #include "lex.h" |
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2492
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61 #include <oct-conf.h> |
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62 #include "oct-hist.h" |
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2162
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63 #include "oct-map.h" |
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64 #include "oct-obj.h" |
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65 #include "pager.h" |
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66 #include "parse.h" |
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67 #include "pathsearch.h" |
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68 #include "procstream.h" |
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2370
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69 #include "ov.h" |
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70 #include "pt-plot.h" |
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2982
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71 #include "pt-stmt.h" |
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72 #include "sighandlers.h" |
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73 #include "sysdep.h" |
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2693
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74 #include "syswait.h" |
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75 #include "toplev.h" |
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76 #include "unwind-prot.h" |
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77 #include "utils.h" |
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78 #include "variables.h" |
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2492
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79 #include <version.h> |
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80 |
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2806
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81 // Nonzero means we print |
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82 static bool Vdefault_eval_print_flag = true; |
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83 |
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84 // Nonzero means we're breaking out of a loop or function body. |
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85 extern int breaking; |
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86 |
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87 // Nonzero means we're returning from a function. |
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88 extern int returning; |
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89 |
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90 // Nonzero means we are using readline. |
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91 // (--no-line-editing) |
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92 int line_editing = 1; |
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93 |
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94 // Nonzero means we printed messages about reading startup files. |
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95 int reading_startup_message_printed = 0; |
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96 |
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97 // Nonzero means we are exiting via the builtin exit or quit functions. |
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98 int quitting_gracefully = 0; |
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99 |
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100 // Current command to execute. |
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101 tree_statement_list *global_command = 0; |
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102 |
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103 // Pointer to function that is currently being evaluated. |
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104 octave_user_function *curr_function = 0; |
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105 |
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106 // Nonzero means input is coming from startup file. |
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107 int input_from_startup_file = 0; |
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108 |
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109 // Nonzero means that input is coming from a file that was named on |
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110 // the command line. |
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111 int input_from_command_line_file = 1; |
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112 |
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113 // Top level context (?) |
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114 jmp_buf toplevel; |
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115 |
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116 void |
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117 parse_and_execute (FILE *f) |
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118 { |
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119 begin_unwind_frame ("parse_and_execute"); |
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120 |
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121 YY_BUFFER_STATE old_buf = current_buffer (); |
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122 YY_BUFFER_STATE new_buf = create_buffer (f); |
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123 |
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124 add_unwind_protect (restore_input_buffer, old_buf); |
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125 add_unwind_protect (delete_input_buffer, new_buf); |
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126 |
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127 switch_to_buffer (new_buf); |
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128 |
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129 unwind_protect_int (line_editing); |
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130 unwind_protect_int (input_from_command_line_file); |
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131 |
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132 line_editing = 0; |
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133 input_from_command_line_file = 0; |
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134 |
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135 unwind_protect_ptr (curr_sym_tab); |
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136 |
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137 int retval; |
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138 do |
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139 { |
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140 reset_parser (); |
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141 |
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142 retval = yyparse (); |
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143 |
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144 if (retval == 0 && global_command) |
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145 { |
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2898
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146 global_command->eval (); |
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147 |
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148 delete global_command; |
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149 |
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150 global_command = 0; |
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151 |
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152 bool quit = (returning || breaking); |
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153 |
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154 if (returning) |
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155 returning = 0; |
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156 |
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157 if (breaking) |
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158 breaking--; |
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159 |
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160 if (error_state) |
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161 { |
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162 error ("near line %d of file `%s'", input_line_number, |
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163 curr_fcn_file_full_name.c_str ()); |
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164 |
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165 break; |
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166 } |
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167 |
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168 if (quit) |
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169 break; |
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170 } |
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171 } |
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172 while (retval == 0); |
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173 |
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174 run_unwind_frame ("parse_and_execute"); |
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175 } |
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176 |
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177 static void |
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178 safe_fclose (void *f) |
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179 { |
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180 if (f) |
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181 fclose (static_cast<FILE *> (f)); |
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182 } |
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183 |
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184 void |
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185 parse_and_execute (const string& s, bool verbose, const char *warn_for) |
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186 { |
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187 begin_unwind_frame ("parse_and_execute_2"); |
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188 |
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189 unwind_protect_int (reading_script_file); |
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190 unwind_protect_str (curr_fcn_file_full_name); |
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191 |
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192 reading_script_file = 1; |
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193 curr_fcn_file_full_name = s; |
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194 |
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195 FILE *f = get_input_from_file (s, 0); |
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196 |
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197 if (f) |
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198 { |
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199 add_unwind_protect (safe_fclose, f); |
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200 |
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201 unwind_protect_int (input_line_number); |
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202 unwind_protect_int (current_input_column); |
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203 |
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204 input_line_number = 0; |
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205 current_input_column = 1; |
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206 |
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207 if (verbose) |
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208 { |
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209 cout << "reading commands from " << s << " ... "; |
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210 reading_startup_message_printed = 1; |
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211 cout.flush (); |
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212 } |
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213 |
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214 parse_and_execute (f); |
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215 |
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216 if (verbose) |
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217 cout << "done." << endl; |
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218 } |
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219 else if (warn_for) |
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220 error ("%s: unable to open file `%s'", warn_for, s.c_str ()); |
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221 |
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222 run_unwind_frame ("parse_and_execute_2"); |
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223 } |
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224 |
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225 int |
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226 main_loop (void) |
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227 { |
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228 // Allow the user to interrupt us without exiting. |
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229 |
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230 octave_save_signal_mask (); |
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231 |
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1907
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232 if (setjmp (toplevel) != 0) |
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233 { |
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234 raw_mode (0); |
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235 |
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236 cout << "\n"; |
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237 |
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238 octave_restore_signal_mask (); |
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239 } |
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240 |
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241 can_interrupt = 1; |
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242 |
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243 octave_catch_interrupts (); |
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244 |
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245 // The big loop. |
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246 |
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247 int retval; |
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248 do |
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249 { |
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250 curr_sym_tab = top_level_sym_tab; |
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251 |
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252 reset_parser (); |
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253 |
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254 retval = yyparse (); |
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255 |
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256 if (retval == 0 && global_command) |
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257 { |
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258 global_command->eval (); |
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259 |
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260 delete global_command; |
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261 |
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262 global_command = 0; |
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263 |
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264 if (! (interactive || forced_interactive)) |
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265 { |
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266 bool quit = (returning || breaking); |
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267 |
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268 if (returning) |
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269 returning = 0; |
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270 |
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271 if (breaking) |
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272 breaking--; |
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273 |
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274 if (quit) |
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275 break; |
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276 } |
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277 |
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278 if (error_state) |
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279 { |
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280 if (! (interactive || forced_interactive)) |
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281 break; |
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282 } |
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283 else |
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2620
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284 { |
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285 if (octave_completion_matches_called) |
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286 octave_completion_matches_called = false; |
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287 else |
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288 command_editor::increment_current_command_number (); |
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289 } |
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290 } |
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291 } |
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292 while (retval == 0); |
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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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1957
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297 DEFUN (source, args, , |
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298 "source (FILE)\n\ |
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299 \n\ |
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300 Parse and execute the contents of FILE. Like executing commands in a\n\ |
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301 script file but without requiring the file to be named `FILE.m'.") |
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302 { |
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303 octave_value_list retval; |
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304 |
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305 int nargin = args.length (); |
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306 |
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307 if (nargin == 1) |
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308 { |
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309 string file = args(0).string_value (); |
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310 |
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311 if (! error_state) |
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312 { |
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313 file = file_ops::tilde_expand (file); |
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314 |
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2898
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315 parse_and_execute (file, false, "source"); |
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316 |
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317 if (error_state) |
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318 error ("source: error sourcing file `%s'", file.c_str ()); |
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319 } |
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320 else |
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321 error ("source: expecting file name as argument"); |
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322 } |
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323 else |
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324 print_usage ("source"); |
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325 |
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326 return retval; |
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327 } |
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328 |
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329 // Fix up things before exiting. |
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330 |
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331 void |
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332 clean_up_and_exit (int retval) |
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333 { |
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334 command_editor::restore_terminal_state (); |
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335 |
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336 // XXX FIXME XXX -- is this needed? Can it cause any trouble? |
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337 raw_mode (0); |
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338 |
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2926
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339 command_history::clean_up_and_save (); |
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340 |
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341 close_plot_stream (); |
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342 |
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343 close_files (); |
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344 |
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345 cleanup_tmp_files (); |
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346 |
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347 if (!quitting_gracefully && (interactive || forced_interactive)) |
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348 cout << "\n"; |
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349 |
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350 if (retval == EOF) |
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351 retval = 0; |
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352 |
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353 exit (retval); |
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354 |
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355 // This is bogus but should prevent g++ from giving a warning saying |
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356 // that this volatile function does return. |
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357 |
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358 panic_impossible (); |
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359 } |
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360 |
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1957
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361 DEFUN_TEXT (casesen, args, , |
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362 "casesen [on|off]") |
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363 { |
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364 octave_value_list retval; |
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365 |
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1755
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366 int argc = args.length () + 1; |
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367 |
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1965
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368 string_vector argv = args.make_argv ("casesen"); |
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369 |
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1755
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370 if (error_state) |
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371 return retval; |
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372 |
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373 if (argc == 1 || (argc > 1 && argv[1] == "off")) |
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374 warning ("casesen: sorry, Octave is always case sensitive"); |
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1755
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375 else if (argc > 1 && argv[1] == "on") |
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376 ; // ok. |
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377 else |
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378 print_usage ("casesen"); |
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379 |
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380 return retval; |
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381 } |
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382 |
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1957
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383 DEFUN (computer, args, nargout, |
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384 "computer ():\n\ |
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385 \n\ |
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386 Have Octave ask the system, \"What kind of computer are you?\"") |
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387 { |
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2086
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388 octave_value_list retval; |
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389 |
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390 int nargin = args.length (); |
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391 |
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392 if (nargin != 0) |
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393 warning ("computer: ignoring extra arguments"); |
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394 |
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2095
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395 string msg; |
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396 |
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397 if (strcmp (TARGET_HOST_TYPE, "unknown") == 0) |
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398 msg = "Hi Dave, I'm a HAL-9000"; |
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399 else |
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2095
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400 msg = TARGET_HOST_TYPE; |
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1683
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401 |
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402 if (nargout == 0) |
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2095
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403 octave_stdout << msg << "\n"; |
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1683
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404 else |
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2095
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405 retval = msg; |
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1683
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406 |
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407 return retval; |
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408 } |
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409 |
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2068
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410 DEFUN (quit, args, , |
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411 "quit (STATUS): exit Octave gracefully, returning STATUS to the system.\n\ |
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412 \n\ |
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413 STATUS should be an integer value. If STATUS is missing, 0 is assumed.") |
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1683
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414 { |
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2086
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415 octave_value_list retval; |
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2068
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416 |
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417 int exit_status = 0; |
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418 |
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419 quitting_gracefully = 1; |
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420 |
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1683
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421 int nargin = args.length (); |
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422 |
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423 if (nargin > 0) |
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2068
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424 { |
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425 // XXX FIXME XXX -- need a safe uniform way to do this. |
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1683
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426 |
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2068
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427 double tmp = args(0).double_value (); |
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1683
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428 |
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2068
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429 if (! error_state && ! xisnan (tmp)) |
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430 exit_status = NINT (tmp); |
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431 } |
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432 |
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433 clean_up_and_exit (exit_status); |
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434 |
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1683
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435 return retval; |
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436 } |
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437 |
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438 DEFALIAS (exit, quit); |
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439 |
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1957
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440 DEFUN (warranty, , , |
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1683
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441 "warranty (): describe copying conditions") |
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442 { |
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2086
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443 octave_value_list retval; |
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1683
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444 |
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2095
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445 octave_stdout << "\n" OCTAVE_NAME_VERSION_AND_COPYRIGHT "\n\n\ |
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1683
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446 This program is free software; you can redistribute it and/or modify\n\ |
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447 it under the terms of the GNU General Public License as published by\n\ |
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448 the Free Software Foundation; either version 2 of the License, or\n\ |
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449 (at your option) any later version.\n\ |
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450 \n\ |
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451 This program is distributed in the hope that it will be useful,\n\ |
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452 but WITHOUT ANY WARRANTY; without even the implied warranty of\n\ |
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453 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n\ |
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454 GNU General Public License for more details.\n\ |
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455 \n\ |
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456 You should have received a copy of the GNU General Public License\n\ |
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457 along with this program. If not, write to the Free Software\n\ |
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458 Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.\n\ |
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459 \n"; |
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460 |
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461 return retval; |
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462 } |
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463 |
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464 // XXX FIXME XXX -- this may not be the best place for these... |
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465 |
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2942
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466 static octave_value_list |
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2086
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467 feval (const octave_value_list& args, int nargout) |
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1683
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468 { |
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2086
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469 octave_value_list retval; |
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1683
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470 |
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2973
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471 octave_function *fcn = is_valid_function (args(0), "feval", 1); |
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2891
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472 |
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1683
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473 if (fcn) |
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|
474 { |
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2942
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475 string_vector arg_names = args.name_tags (); |
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476 |
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1683
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477 int tmp_nargin = args.length () - 1; |
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2942
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478 |
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|
479 octave_value_list tmp_args (tmp_nargin, octave_value ()); |
|
|
480 |
|
|
481 string_vector tmp_arg_names (tmp_nargin); |
|
|
482 |
|
1683
|
483 for (int i = 0; i < tmp_nargin; i++) |
|
2942
|
484 { |
|
|
485 tmp_args(i) = args(i+1); |
|
|
486 tmp_arg_names(i) = arg_names(i+1); |
|
|
487 } |
|
|
488 |
|
|
489 tmp_args.stash_name_tags (tmp_arg_names); |
|
|
490 |
|
2973
|
491 retval = fcn->do_index_op (nargout, tmp_args); |
|
1683
|
492 } |
|
|
493 |
|
|
494 return retval; |
|
|
495 } |
|
|
496 |
|
1957
|
497 DEFUN (feval, args, nargout, |
|
1683
|
498 "feval (NAME, ARGS, ...)\n\ |
|
|
499 \n\ |
|
|
500 evaluate NAME as a function, passing ARGS as its arguments") |
|
|
501 { |
|
2086
|
502 octave_value_list retval; |
|
1683
|
503 |
|
|
504 int nargin = args.length (); |
|
|
505 |
|
|
506 if (nargin > 0) |
|
|
507 retval = feval (args, nargout); |
|
|
508 else |
|
|
509 print_usage ("feval"); |
|
|
510 |
|
|
511 return retval; |
|
|
512 } |
|
|
513 |
|
2086
|
514 static octave_value_list |
|
2898
|
515 eval_string (const string& s, bool silent, int& parse_status, int nargout) |
|
1683
|
516 { |
|
|
517 begin_unwind_frame ("eval_string"); |
|
|
518 |
|
|
519 unwind_protect_int (get_input_from_eval_string); |
|
|
520 unwind_protect_int (input_from_command_line_file); |
|
|
521 unwind_protect_ptr (global_command); |
|
1755
|
522 unwind_protect_str (current_eval_string); |
|
1683
|
523 |
|
|
524 get_input_from_eval_string = 1; |
|
|
525 input_from_command_line_file = 0; |
|
1755
|
526 current_eval_string = s; |
|
1683
|
527 |
|
|
528 YY_BUFFER_STATE old_buf = current_buffer (); |
|
|
529 YY_BUFFER_STATE new_buf = create_buffer (0); |
|
|
530 |
|
2800
|
531 add_unwind_protect (restore_input_buffer, old_buf); |
|
|
532 add_unwind_protect (delete_input_buffer, new_buf); |
|
1683
|
533 |
|
|
534 switch_to_buffer (new_buf); |
|
|
535 |
|
|
536 unwind_protect_ptr (curr_sym_tab); |
|
|
537 |
|
|
538 reset_parser (); |
|
|
539 |
|
|
540 parse_status = yyparse (); |
|
|
541 |
|
|
542 // Important to reset the idea of where input is coming from before |
|
|
543 // trying to eval the command we just parsed -- it might contain the |
|
|
544 // name of an function file that still needs to be parsed! |
|
|
545 |
|
|
546 tree_statement_list *command = global_command; |
|
|
547 |
|
|
548 run_unwind_frame ("eval_string"); |
|
|
549 |
|
2086
|
550 octave_value_list retval; |
|
1683
|
551 |
|
|
552 if (parse_status == 0 && command) |
|
|
553 { |
|
2898
|
554 retval = command->eval (silent, nargout); |
|
1683
|
555 delete command; |
|
|
556 } |
|
|
557 |
|
|
558 return retval; |
|
|
559 } |
|
|
560 |
|
2086
|
561 octave_value |
|
2898
|
562 eval_string (const string& s, bool silent, int& parse_status) |
|
1683
|
563 { |
|
2086
|
564 octave_value retval; |
|
1683
|
565 |
|
2898
|
566 octave_value_list tmp = eval_string (s, silent, parse_status, 1); |
|
1683
|
567 |
|
|
568 retval = tmp(0); |
|
|
569 |
|
|
570 return retval; |
|
|
571 } |
|
|
572 |
|
2086
|
573 static octave_value_list |
|
2898
|
574 eval_string (const octave_value& arg, bool silent, int& parse_status, |
|
2806
|
575 int nargout) |
|
1683
|
576 { |
|
1755
|
577 string s = arg.string_value (); |
|
1683
|
578 |
|
|
579 if (error_state) |
|
|
580 { |
|
|
581 error ("eval: expecting string argument"); |
|
|
582 return -1.0; |
|
|
583 } |
|
|
584 |
|
2898
|
585 return eval_string (s, silent, parse_status, nargout); |
|
1683
|
586 } |
|
|
587 |
|
1957
|
588 DEFUN (eval, args, nargout, |
|
1683
|
589 "eval (TRY, CATCH)\n\ |
|
|
590 \n\ |
|
|
591 Evaluate the string TRY as octave code. If that fails, evaluate the\n\ |
|
|
592 string CATCH.") |
|
|
593 { |
|
2086
|
594 octave_value_list retval; |
|
1683
|
595 |
|
|
596 int nargin = args.length (); |
|
|
597 |
|
|
598 if (nargin > 0) |
|
|
599 { |
|
|
600 begin_unwind_frame ("Feval"); |
|
|
601 |
|
|
602 if (nargin > 1) |
|
|
603 { |
|
|
604 unwind_protect_int (buffer_error_messages); |
|
|
605 buffer_error_messages = 1; |
|
|
606 } |
|
|
607 |
|
|
608 int parse_status = 0; |
|
|
609 |
|
2898
|
610 retval = eval_string (args(0), ! Vdefault_eval_print_flag, |
|
2808
|
611 parse_status, nargout); |
|
1683
|
612 |
|
|
613 if (nargin > 1 && (parse_status != 0 || error_state)) |
|
|
614 { |
|
|
615 error_state = 0; |
|
|
616 |
|
|
617 // Set up for letting the user print any messages from |
|
|
618 // errors that occurred in the first part of this eval(). |
|
|
619 |
|
|
620 buffer_error_messages = 0; |
|
|
621 bind_global_error_variable (); |
|
|
622 add_unwind_protect (clear_global_error_variable, 0); |
|
|
623 |
|
2808
|
624 eval_string (args(1), 0, parse_status, nargout); |
|
1683
|
625 |
|
2086
|
626 retval = octave_value_list (); |
|
1683
|
627 } |
|
|
628 |
|
|
629 run_unwind_frame ("Feval"); |
|
|
630 } |
|
|
631 else |
|
|
632 print_usage ("eval"); |
|
|
633 |
|
|
634 return retval; |
|
|
635 } |
|
|
636 |
|
|
637 // Execute a shell command. |
|
|
638 |
|
1965
|
639 static void |
|
|
640 cleanup_iprocstream (void *p) |
|
|
641 { |
|
2800
|
642 delete static_cast<iprocstream *> (p); |
|
1965
|
643 } |
|
|
644 |
|
2086
|
645 static octave_value_list |
|
2321
|
646 run_command_and_return_output (const string& cmd_str) |
|
2083
|
647 { |
|
2086
|
648 octave_value_list retval; |
|
2083
|
649 |
|
|
650 iprocstream *cmd = new iprocstream (cmd_str.c_str ()); |
|
|
651 |
|
|
652 add_unwind_protect (cleanup_iprocstream, cmd); |
|
|
653 |
|
|
654 int status = 127; |
|
|
655 |
|
|
656 if (cmd && *cmd) |
|
|
657 { |
|
|
658 ostrstream output_buf; |
|
2095
|
659 |
|
2083
|
660 char ch; |
|
|
661 while (cmd->get (ch)) |
|
2321
|
662 output_buf.put (ch); |
|
2083
|
663 |
|
|
664 status = cmd->close (); |
|
|
665 |
|
|
666 // The value in status is as returned by waitpid. If the |
|
|
667 // process exited normally, extract the actual exit status of |
|
|
668 // the command. Otherwise, return 127 as a failure code. |
|
|
669 |
|
2693
|
670 if (WIFEXITED (status)) |
|
|
671 status = WEXITSTATUS (status); |
|
2083
|
672 |
|
2321
|
673 output_buf << ends; |
|
2145
|
674 |
|
2321
|
675 char *msg = output_buf.str (); |
|
2083
|
676 |
|
2800
|
677 retval(1) = static_cast<double> (status); |
|
2321
|
678 retval(0) = msg; |
|
2083
|
679 |
|
2321
|
680 delete [] msg; |
|
2083
|
681 } |
|
|
682 else |
|
|
683 error ("unable to start subprocess for `%s'", cmd_str.c_str ()); |
|
|
684 |
|
|
685 run_unwind_protect (); |
|
|
686 |
|
|
687 return retval; |
|
|
688 } |
|
|
689 |
|
1957
|
690 DEFUN (system, args, nargout, |
|
2083
|
691 "system (STRING [, RETURN_OUTPUT] [, TYPE])\n\ |
|
|
692 \n\ |
|
|
693 Execute the shell command specified by STRING.\n\ |
|
|
694 \n\ |
|
|
695 If TYPE is \"async\", the process is started in the background and the\n\ |
|
|
696 pid of the child proces is returned immediately. Otherwise, the\n\ |
|
|
697 process is started, and Octave waits until it exits. If TYPE argument\n\ |
|
|
698 is omitted, a value of \"sync\" is assumed.\n\ |
|
|
699 \n\ |
|
|
700 If NARGIN == 2 (the actual value of RETURN_OUTPUT is irrelevant) and\n\ |
|
|
701 the subprocess is started synchronously, or if system() is called with\n\ |
|
|
702 NARGIN == 1 and NARGOUT > 0, the output from the command is returned.\n\ |
|
|
703 Otherwise, if the subprocess is executed synchronously, it's output is\n\ |
|
2321
|
704 sent to the standard output. To send the output of a command executed\n\ |
|
|
705 with system() through the pager, use a command like\n\ |
|
|
706 \n\ |
|
|
707 disp (system (CMD, 1));\n\ |
|
|
708 \n\ |
|
|
709 or\n\ |
|
|
710 \n\ |
|
2322
|
711 printf (\"%s\\n\", system (CMD, 1));") |
|
1683
|
712 { |
|
2086
|
713 octave_value_list retval; |
|
1683
|
714 |
|
|
715 int nargin = args.length (); |
|
|
716 |
|
2083
|
717 if (nargin > 0 && nargin < 4) |
|
1683
|
718 { |
|
2083
|
719 bool return_output = (nargout > 0 || nargin > 1); |
|
|
720 |
|
|
721 string cmd_str = args(0).string_value (); |
|
|
722 |
|
|
723 enum exec_type { sync, async }; |
|
|
724 |
|
|
725 exec_type type = sync; |
|
|
726 |
|
|
727 if (! error_state) |
|
|
728 { |
|
|
729 if (nargin > 2) |
|
|
730 { |
|
|
731 string type_str = args(2).string_value (); |
|
1683
|
732 |
|
2083
|
733 if (! error_state) |
|
|
734 { |
|
|
735 if (type_str == "sync") |
|
|
736 type = sync; |
|
|
737 else if (type_str == "async") |
|
|
738 type = async; |
|
|
739 else |
|
|
740 error ("system: third arg must be \"sync\" or \"async\""); |
|
|
741 } |
|
|
742 else |
|
|
743 error ("system: third argument must be a string"); |
|
|
744 } |
|
|
745 } |
|
|
746 else |
|
|
747 error ("system: expecting string as first argument"); |
|
1683
|
748 |
|
2083
|
749 if (! error_state) |
|
|
750 { |
|
|
751 if (type == async) |
|
|
752 { |
|
|
753 pid_t pid = fork (); |
|
|
754 |
|
|
755 if (pid < 0) |
|
|
756 error ("system: fork failed -- can't create child process"); |
|
|
757 else if (pid == 0) |
|
|
758 { |
|
|
759 system (cmd_str.c_str ()); |
|
|
760 exit (0); |
|
|
761 retval(0) = 0.0; |
|
|
762 } |
|
|
763 else |
|
2800
|
764 retval(0) = static_cast<double> (pid); |
|
2083
|
765 } |
|
2321
|
766 else if (return_output) |
|
|
767 retval = run_command_and_return_output (cmd_str); |
|
2083
|
768 else |
|
2321
|
769 { |
|
|
770 int status = system (cmd_str.c_str ()); |
|
|
771 |
|
|
772 // The value in status is as returned by waitpid. If |
|
|
773 // the process exited normally, extract the actual exit |
|
|
774 // status of the command. Otherwise, return 127 as a |
|
|
775 // failure code. |
|
|
776 |
|
2693
|
777 if (WIFEXITED (status)) |
|
|
778 status = WEXITSTATUS (status); |
|
2321
|
779 |
|
2800
|
780 retval = static_cast<double> (status); |
|
2321
|
781 } |
|
2083
|
782 } |
|
1683
|
783 } |
|
|
784 else |
|
2083
|
785 print_usage ("system"); |
|
1683
|
786 |
|
|
787 return retval; |
|
|
788 } |
|
|
789 |
|
|
790 DEFALIAS (shell_cmd, system); |
|
|
791 |
|
2614
|
792 // XXX FIXME XXX -- this should really be static, but that causes |
|
|
793 // problems on some systems. |
|
|
794 SLStack<string> octave_atexit_functions; |
|
2077
|
795 |
|
|
796 void |
|
|
797 do_octave_atexit (void) |
|
|
798 { |
|
|
799 while (! octave_atexit_functions.empty ()) |
|
|
800 { |
|
2086
|
801 octave_value_list fcn = octave_atexit_functions.pop (); |
|
2077
|
802 |
|
2942
|
803 feval (fcn, 0); |
|
2077
|
804 } |
|
|
805 } |
|
|
806 |
|
2162
|
807 DEFUN (atexit, args, , |
|
2077
|
808 "atexit (NAME): register NAME as a function to call when Octave exits\n\ |
|
|
809 \n\ |
|
2802
|
810 Functions are called with no arguments in the reverse of the order in\n\ |
|
2077
|
811 which they were registered with atexit()") |
|
|
812 { |
|
2086
|
813 octave_value_list retval; |
|
2077
|
814 |
|
|
815 int nargin = args.length (); |
|
|
816 |
|
|
817 if (nargin == 1) |
|
|
818 { |
|
2475
|
819 #if defined (HAVE_ATEXIT) || defined (HAVE_ON_EXIT) |
|
2077
|
820 string arg = args(0).string_value (); |
|
|
821 |
|
|
822 if (! error_state) |
|
|
823 octave_atexit_functions.push (arg); |
|
|
824 else |
|
|
825 error ("atexit: argument must be a string"); |
|
2475
|
826 #else |
|
|
827 gripe_not_supported ("atexit"); |
|
|
828 #endif |
|
2077
|
829 } |
|
|
830 else |
|
|
831 print_usage ("atexit"); |
|
|
832 |
|
|
833 return retval; |
|
|
834 } |
|
|
835 |
|
2689
|
836 DEFUN (octave_config_info, args, , |
|
|
837 "octave_config_info (OPTION)\n\ |
|
|
838 \n\ |
|
|
839 If OPTION is a string, return the configuration information for the\n\ |
|
|
840 specified option.\n\ |
|
|
841 \n\ |
|
|
842 With no arguments, return a structure containing configuration\n\ |
|
|
843 information.") |
|
2162
|
844 { |
|
2689
|
845 octave_value retval; |
|
|
846 |
|
2696
|
847 #if defined (WITH_DYNAMIC_LINKING) && (defined (WITH_DL) || defined (WITH_SHL)) |
|
2689
|
848 bool octave_supports_dynamic_linking = true; |
|
|
849 #else |
|
|
850 bool octave_supports_dynamic_linking = false; |
|
|
851 #endif |
|
|
852 |
|
2162
|
853 Octave_map m; |
|
|
854 |
|
|
855 m ["default_pager"] = DEFAULT_PAGER; |
|
|
856 m ["prefix"] = OCTAVE_PREFIX; |
|
|
857 m ["exec_prefix"] = OCTAVE_EXEC_PREFIX; |
|
|
858 m ["datadir"] = OCTAVE_DATADIR; |
|
2800
|
859 m ["dld"] = static_cast<double> (octave_supports_dynamic_linking); |
|
2162
|
860 m ["libdir"] = OCTAVE_LIBDIR; |
|
|
861 m ["bindir"] = OCTAVE_BINDIR; |
|
|
862 m ["infodir"] = OCTAVE_INFODIR; |
|
|
863 m ["fcnfiledir"] = OCTAVE_FCNFILEDIR; |
|
|
864 m ["localfcnfiledir"] = OCTAVE_LOCALFCNFILEDIR; |
|
|
865 m ["localstartupfiledir"] = OCTAVE_LOCALSTARTUPFILEDIR; |
|
|
866 m ["startupfiledir"] = OCTAVE_STARTUPFILEDIR; |
|
|
867 m ["localfcnfilepath"] = OCTAVE_LOCALFCNFILEPATH; |
|
|
868 m ["archlibdir"] = OCTAVE_ARCHLIBDIR; |
|
2439
|
869 m ["localarchlibdir"] = OCTAVE_LOCALARCHLIBDIR; |
|
2162
|
870 m ["octfiledir"] = OCTAVE_OCTFILEDIR; |
|
|
871 m ["localoctfilepath"] = OCTAVE_LOCALOCTFILEPATH; |
|
|
872 m ["fcnfilepath"] = OCTAVE_FCNFILEPATH; |
|
|
873 m ["imagepath"] = OCTAVE_IMAGEPATH; |
|
|
874 m ["target_host_type"] = TARGET_HOST_TYPE; |
|
|
875 m ["configure_options"] = config_opts; |
|
|
876 m ["F77"] = F77; |
|
|
877 m ["FFLAGS"] = FFLAGS; |
|
|
878 m ["FPICFLAG"] = FPICFLAG; |
|
|
879 m ["F2C"] = F2C; |
|
|
880 m ["F2CFLAGS"] = F2CFLAGS; |
|
|
881 m ["FLIBS"] = FLIBS; |
|
|
882 m ["CPPFLAGS"] = CPPFLAGS; |
|
|
883 m ["INCFLAGS"] = INCFLAGS; |
|
|
884 m ["CC"] = CC " " CC_VERSION; |
|
|
885 m ["CFLAGS"] = CFLAGS; |
|
|
886 m ["CPICFLAG"] = CPICFLAG; |
|
|
887 m ["CXX"] = CXX " " CXX_VERSION; |
|
|
888 m ["CXXFLAGS"] = CXXFLAGS; |
|
|
889 m ["CXXPICFLAG"] = CXXPICFLAG; |
|
|
890 m ["LDFLAGS"] = LDFLAGS; |
|
|
891 m ["LIBFLAGS"] = LIBFLAGS; |
|
2675
|
892 m ["RLD_FLAG"] = RLD_FLAG; |
|
2162
|
893 m ["TERMLIBS"] = TERMLIBS; |
|
|
894 m ["LIBS"] = LIBS; |
|
|
895 m ["LEXLIB"] = LEXLIB; |
|
|
896 m ["LIBPLPLOT"] = LIBPLPLOT; |
|
|
897 m ["LIBDLFCN"] = LIBDLFCN; |
|
|
898 m ["DEFS"] = DEFS; |
|
|
899 |
|
2689
|
900 int nargin = args.length (); |
|
|
901 |
|
|
902 if (nargin == 1) |
|
|
903 { |
|
|
904 string arg = args(0).string_value (); |
|
|
905 |
|
|
906 if (! error_state) |
|
|
907 retval = octave_value (m [arg.c_str ()]); |
|
|
908 } |
|
|
909 else if (nargin == 0) |
|
|
910 retval = octave_value (m); |
|
|
911 else |
|
|
912 print_usage ("octave_config_info"); |
|
|
913 |
|
|
914 return retval; |
|
2162
|
915 } |
|
|
916 |
|
1683
|
917 #if defined (__GNUG__) && defined (DEBUG_NEW_DELETE) |
|
2806
|
918 |
|
1683
|
919 int debug_new_delete = 0; |
|
|
920 |
|
|
921 typedef void (*vfp)(void); |
|
|
922 extern vfp __new_handler; |
|
|
923 |
|
|
924 void * |
|
|
925 __builtin_new (size_t sz) |
|
|
926 { |
|
|
927 void *p; |
|
|
928 |
|
|
929 /* malloc (0) is unpredictable; avoid it. */ |
|
|
930 if (sz == 0) |
|
|
931 sz = 1; |
|
2800
|
932 p = malloc (sz); |
|
1683
|
933 while (p == 0) |
|
|
934 { |
|
|
935 (*__new_handler) (); |
|
2800
|
936 p = malloc (sz); |
|
1683
|
937 } |
|
|
938 |
|
|
939 if (debug_new_delete) |
|
|
940 cout << "__builtin_new: " << p << endl; |
|
|
941 |
|
|
942 return p; |
|
|
943 } |
|
|
944 |
|
|
945 void |
|
|
946 __builtin_delete (void *ptr) |
|
|
947 { |
|
|
948 if (debug_new_delete) |
|
|
949 cout << "__builtin_delete: " << ptr << endl; |
|
|
950 |
|
|
951 if (ptr) |
|
|
952 free (ptr); |
|
|
953 } |
|
2806
|
954 |
|
1683
|
955 #endif |
|
|
956 |
|
2806
|
957 static int |
|
|
958 default_eval_print_flag (void) |
|
|
959 { |
|
|
960 Vdefault_eval_print_flag = check_preference ("default_eval_print_flag"); |
|
|
961 |
|
|
962 return 0; |
|
|
963 } |
|
|
964 |
|
|
965 void |
|
|
966 symbols_of_toplev (void) |
|
|
967 { |
|
|
968 DEFVAR (default_eval_print_flag, 1.0, 0, default_eval_print_flag, |
|
|
969 "If the value of this variable is nonzero, Octave will print the\n\ |
|
|
970 results of commands executed by eval() that do not end with semicolons."); |
|
|
971 |
|
|
972 } |
|
|
973 |
|
1683
|
974 /* |
|
|
975 ;;; Local Variables: *** |
|
|
976 ;;; mode: C++ *** |
|
|
977 ;;; End: *** |
|
|
978 */ |
