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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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2442
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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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47 #include "lo-error.h" |
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48 #include "lo-mappers.h" |
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49 #include "str-vec.h" |
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50 |
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51 #include "builtins.h" |
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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 "dynamic-ld.h" |
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55 #include "error.h" |
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56 #include "file-io.h" |
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57 #include "help.h" |
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58 #include "input.h" |
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59 #include "lex.h" |
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2492
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60 #include <oct-conf.h> |
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61 #include "oct-hist.h" |
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2162
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62 #include "oct-map.h" |
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63 #include "oct-obj.h" |
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64 #include "oct-sym.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-misc.h" |
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71 #include "pt-plot.h" |
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72 #include "sighandlers.h" |
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73 #include "sysdep.h" |
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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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79 #include <version.h> |
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80 |
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81 // argv[0] for this program. |
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82 string Vprogram_invocation_name; |
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83 |
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84 // Cleaned-up name of this program, not including path information. |
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85 string Vprogram_name; |
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86 |
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87 // Login name for user running this program. |
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88 string Vuser_name; |
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89 |
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90 // Name of the host we are running on. |
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91 string Vhost_name; |
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92 |
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93 // User's home directory. |
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94 string Vhome_directory; |
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95 |
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96 // Nonzero means we print |
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97 static bool Vdefault_eval_print_flag = true; |
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98 |
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99 // Nonzero means we're breaking out of a loop or function body. |
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100 extern int breaking; |
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101 |
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102 // Nonzero means we're returning from a function. |
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103 extern int returning; |
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104 |
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105 // Nonzero means we are using readline. |
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106 // (--no-line-editing) |
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107 #if defined (USE_READLINE) |
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108 int using_readline = 1; |
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109 #else |
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110 int using_readline = 0; |
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111 #endif |
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112 |
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113 #if defined (USE_READLINE) |
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114 // This is from readline's rltty.c: |
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115 extern "C" void rl_deprep_terminal (void); |
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116 #endif |
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117 |
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118 // Nonzero means we printed messages about reading startup files. |
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119 int reading_startup_message_printed = 0; |
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120 |
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121 // Command number, counting from the beginning of this session. |
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122 int current_command_number = 1; |
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123 |
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124 // Nonzero means we are exiting via the builtin exit or quit functions. |
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125 int quitting_gracefully = 0; |
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126 |
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127 // Current command to execute. |
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128 tree_statement_list *global_command = 0; |
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129 |
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130 // Pointer to function that is currently being evaluated. |
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131 octave_user_function *curr_function = 0; |
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132 |
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133 // Nonzero means input is coming from startup file. |
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134 int input_from_startup_file = 0; |
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135 |
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136 // Nonzero means that input is coming from a file that was named on |
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137 // the command line. |
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138 int input_from_command_line_file = 1; |
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139 |
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140 // Top level context (?) |
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141 jmp_buf toplevel; |
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142 |
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143 void |
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144 parse_and_execute (FILE *f, bool print) |
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145 { |
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146 begin_unwind_frame ("parse_and_execute"); |
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147 |
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148 YY_BUFFER_STATE old_buf = current_buffer (); |
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149 YY_BUFFER_STATE new_buf = create_buffer (f); |
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150 |
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151 add_unwind_protect (restore_input_buffer, old_buf); |
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152 add_unwind_protect (delete_input_buffer, new_buf); |
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153 |
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154 switch_to_buffer (new_buf); |
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155 |
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156 unwind_protect_int (using_readline); |
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157 unwind_protect_int (input_from_command_line_file); |
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158 |
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159 using_readline = 0; |
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160 input_from_command_line_file = 0; |
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161 |
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162 unwind_protect_ptr (curr_sym_tab); |
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163 |
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164 int retval; |
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165 do |
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166 { |
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167 reset_parser (); |
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168 |
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169 retval = yyparse (); |
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170 |
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171 if (retval == 0 && global_command) |
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172 { |
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173 global_command->eval (print); |
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174 |
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175 delete global_command; |
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176 |
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177 global_command = 0; |
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178 |
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179 bool quit = (returning || breaking); |
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180 |
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181 if (returning) |
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182 returning = 0; |
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183 |
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184 if (breaking) |
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185 breaking--; |
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186 |
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187 if (error_state) |
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188 { |
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189 error ("near line %d of file `%s'", input_line_number, |
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190 curr_fcn_file_full_name.c_str ()); |
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191 |
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192 break; |
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193 } |
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194 |
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195 if (quit) |
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196 break; |
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197 } |
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198 } |
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199 while (retval == 0); |
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200 |
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201 run_unwind_frame ("parse_and_execute"); |
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202 } |
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203 |
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204 static void |
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205 safe_fclose (void *f) |
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206 { |
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207 if (f) |
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208 fclose (static_cast<FILE *> (f)); |
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209 } |
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210 |
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211 void |
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212 parse_and_execute (const string& s, bool print, bool verbose, |
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213 const char *warn_for) |
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214 { |
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215 begin_unwind_frame ("parse_and_execute_2"); |
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216 |
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217 unwind_protect_int (reading_script_file); |
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218 unwind_protect_str (curr_fcn_file_full_name); |
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219 |
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220 reading_script_file = 1; |
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221 curr_fcn_file_full_name = s; |
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222 |
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223 FILE *f = get_input_from_file (s, 0); |
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224 |
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225 if (f) |
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226 { |
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227 add_unwind_protect (safe_fclose, f); |
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228 |
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229 unwind_protect_int (input_line_number); |
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230 unwind_protect_int (current_input_column); |
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231 |
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232 input_line_number = 0; |
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233 current_input_column = 1; |
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234 |
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235 if (verbose) |
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236 { |
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237 cout << "reading commands from " << s << " ... "; |
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238 reading_startup_message_printed = 1; |
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239 cout.flush (); |
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240 } |
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241 |
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242 parse_and_execute (f, print); |
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243 |
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244 if (verbose) |
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245 cout << "done." << endl; |
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246 } |
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247 else if (warn_for) |
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248 error ("%s: unable to open file `%s'", warn_for, s.c_str ()); |
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249 |
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250 run_unwind_frame ("parse_and_execute_2"); |
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251 } |
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252 |
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253 int |
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254 main_loop (void) |
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255 { |
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256 // Allow the user to interrupt us without exiting. |
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257 |
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258 octave_save_signal_mask (); |
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259 |
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260 if (setjmp (toplevel) != 0) |
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261 { |
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262 raw_mode (0); |
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263 |
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264 cout << "\n"; |
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265 |
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266 octave_restore_signal_mask (); |
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267 } |
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268 |
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269 can_interrupt = 1; |
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270 |
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2554
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271 octave_catch_interrupts (); |
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272 |
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273 // The big loop. |
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274 |
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275 int retval; |
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276 do |
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277 { |
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278 curr_sym_tab = top_level_sym_tab; |
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279 |
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280 reset_parser (); |
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281 |
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282 retval = yyparse (); |
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283 |
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284 if (retval == 0 && global_command) |
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285 { |
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286 global_command->eval (true); |
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287 |
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288 delete global_command; |
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289 |
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290 global_command = 0; |
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291 |
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292 if (! (interactive || forced_interactive)) |
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293 { |
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294 bool quit = (returning || breaking); |
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295 |
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296 if (returning) |
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297 returning = 0; |
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298 |
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299 if (breaking) |
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300 breaking--; |
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301 |
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302 if (quit) |
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303 break; |
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304 } |
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305 |
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306 if (error_state) |
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307 { |
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308 if (! (interactive || forced_interactive)) |
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309 break; |
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310 } |
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311 else |
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312 { |
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313 if (octave_completion_matches_called) |
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314 octave_completion_matches_called = false; |
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315 else |
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316 current_command_number++; |
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317 } |
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1907
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318 } |
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319 } |
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320 while (retval == 0); |
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321 |
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322 return retval; |
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323 } |
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324 |
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1957
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325 DEFUN (source, args, , |
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326 "source (FILE)\n\ |
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327 \n\ |
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328 Parse and execute the contents of FILE. Like executing commands in a\n\ |
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329 script file but without requiring the file to be named `FILE.m'.") |
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330 { |
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331 octave_value_list retval; |
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332 |
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333 int nargin = args.length (); |
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334 |
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335 if (nargin == 1) |
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336 { |
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337 string file = args(0).string_value (); |
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338 |
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339 if (! error_state) |
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340 { |
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341 file = oct_tilde_expand (file); |
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342 |
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343 parse_and_execute (file, 1, 0, "source"); |
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344 |
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345 if (error_state) |
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346 error ("source: error sourcing file `%s'", file.c_str ()); |
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347 } |
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348 else |
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349 error ("source: expecting file name as argument"); |
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350 } |
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351 else |
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352 print_usage ("source"); |
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353 |
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354 return retval; |
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355 } |
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356 |
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357 // Fix up things before exiting. |
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358 |
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359 void |
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360 clean_up_and_exit (int retval) |
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361 { |
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2552
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362 #if defined (USE_READLINE) |
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363 rl_deprep_terminal (); |
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364 #else |
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365 raw_mode (0); |
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2552
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366 #endif |
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367 |
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1799
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368 octave_command_history.clean_up_and_save (); |
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369 |
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370 close_plot_stream (); |
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371 |
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372 close_files (); |
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373 |
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374 cleanup_tmp_files (); |
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375 |
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376 if (!quitting_gracefully && (interactive || forced_interactive)) |
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377 cout << "\n"; |
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378 |
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379 if (retval == EOF) |
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380 retval = 0; |
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381 |
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382 exit (retval); |
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383 |
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384 // This is bogus but should prevent g++ from giving a warning saying |
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385 // that this volatile function does return. |
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386 |
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387 panic_impossible (); |
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388 } |
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389 |
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1957
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390 DEFUN_TEXT (casesen, args, , |
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391 "casesen [on|off]") |
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392 { |
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2086
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393 octave_value_list retval; |
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394 |
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1755
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395 int argc = args.length () + 1; |
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396 |
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1965
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397 string_vector argv = args.make_argv ("casesen"); |
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398 |
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1755
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399 if (error_state) |
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400 return retval; |
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401 |
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402 if (argc == 1 || (argc > 1 && argv[1] == "off")) |
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403 warning ("casesen: sorry, Octave is always case sensitive"); |
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404 else if (argc > 1 && argv[1] == "on") |
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405 ; // ok. |
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406 else |
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407 print_usage ("casesen"); |
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408 |
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409 return retval; |
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410 } |
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411 |
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1957
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412 DEFUN (computer, args, nargout, |
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413 "computer ():\n\ |
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414 \n\ |
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415 Have Octave ask the system, \"What kind of computer are you?\"") |
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416 { |
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2086
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417 octave_value_list retval; |
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418 |
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419 int nargin = args.length (); |
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420 |
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421 if (nargin != 0) |
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422 warning ("computer: ignoring extra arguments"); |
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423 |
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2095
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424 string msg; |
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1683
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425 |
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426 if (strcmp (TARGET_HOST_TYPE, "unknown") == 0) |
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2095
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427 msg = "Hi Dave, I'm a HAL-9000"; |
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1683
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428 else |
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2095
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429 msg = TARGET_HOST_TYPE; |
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1683
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430 |
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431 if (nargout == 0) |
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2095
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432 octave_stdout << msg << "\n"; |
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1683
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433 else |
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2095
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434 retval = msg; |
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1683
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435 |
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436 return retval; |
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437 } |
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438 |
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2068
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439 DEFUN (quit, args, , |
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440 "quit (STATUS): exit Octave gracefully, returning STATUS to the system.\n\ |
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441 \n\ |
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442 STATUS should be an integer value. If STATUS is missing, 0 is assumed.") |
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1683
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443 { |
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2086
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444 octave_value_list retval; |
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2068
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445 |
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446 int exit_status = 0; |
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447 |
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448 quitting_gracefully = 1; |
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449 |
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1683
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450 int nargin = args.length (); |
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451 |
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452 if (nargin > 0) |
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2068
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453 { |
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454 // XXX FIXME XXX -- need a safe uniform way to do this. |
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455 |
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2068
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456 double tmp = args(0).double_value (); |
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457 |
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2068
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458 if (! error_state && ! xisnan (tmp)) |
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459 exit_status = NINT (tmp); |
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460 } |
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461 |
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462 clean_up_and_exit (exit_status); |
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463 |
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1683
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464 return retval; |
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465 } |
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466 |
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467 DEFALIAS (exit, quit); |
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468 |
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1957
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469 DEFUN (warranty, , , |
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470 "warranty (): describe copying conditions") |
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471 { |
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2086
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472 octave_value_list retval; |
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1683
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473 |
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2095
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474 octave_stdout << "\n" OCTAVE_NAME_VERSION_AND_COPYRIGHT "\n\n\ |
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1683
|
475 This program is free software; you can redistribute it and/or modify\n\ |
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|
476 it under the terms of the GNU General Public License as published by\n\ |
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|
477 the Free Software Foundation; either version 2 of the License, or\n\ |
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478 (at your option) any later version.\n\ |
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479 \n\ |
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480 This program is distributed in the hope that it will be useful,\n\ |
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481 but WITHOUT ANY WARRANTY; without even the implied warranty of\n\ |
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482 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n\ |
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483 GNU General Public License for more details.\n\ |
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484 \n\ |
|
|
485 You should have received a copy of the GNU General Public License\n\ |
|
|
486 along with this program. If not, write to the Free Software\n\ |
|
|
487 Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.\n\ |
|
|
488 \n"; |
|
|
489 |
|
|
490 return retval; |
|
|
491 } |
|
|
492 |
|
|
493 // XXX FIXME XXX -- this may not be the best place for these... |
|
|
494 |
|
2086
|
495 octave_value_list |
|
|
496 feval (const octave_value_list& args, int nargout) |
|
1683
|
497 { |
|
2086
|
498 octave_value_list retval; |
|
1683
|
499 |
|
2891
|
500 octave_symbol *fcn = is_valid_function (args(0), "feval", 1); |
|
|
501 |
|
1683
|
502 if (fcn) |
|
|
503 { |
|
|
504 int tmp_nargin = args.length () - 1; |
|
2086
|
505 octave_value_list tmp_args; |
|
1683
|
506 tmp_args.resize (tmp_nargin); |
|
|
507 for (int i = 0; i < tmp_nargin; i++) |
|
|
508 tmp_args(i) = args(i+1); |
|
2891
|
509 retval = fcn->eval (nargout, tmp_args); |
|
1683
|
510 } |
|
|
511 |
|
|
512 return retval; |
|
|
513 } |
|
|
514 |
|
1957
|
515 DEFUN (feval, args, nargout, |
|
1683
|
516 "feval (NAME, ARGS, ...)\n\ |
|
|
517 \n\ |
|
|
518 evaluate NAME as a function, passing ARGS as its arguments") |
|
|
519 { |
|
2086
|
520 octave_value_list retval; |
|
1683
|
521 |
|
|
522 int nargin = args.length (); |
|
|
523 |
|
|
524 if (nargin > 0) |
|
|
525 retval = feval (args, nargout); |
|
|
526 else |
|
|
527 print_usage ("feval"); |
|
|
528 |
|
|
529 return retval; |
|
|
530 } |
|
|
531 |
|
2086
|
532 static octave_value_list |
|
2859
|
533 eval_string (const string& s, bool print, int& parse_status, int nargout) |
|
1683
|
534 { |
|
|
535 begin_unwind_frame ("eval_string"); |
|
|
536 |
|
|
537 unwind_protect_int (get_input_from_eval_string); |
|
|
538 unwind_protect_int (input_from_command_line_file); |
|
|
539 unwind_protect_ptr (global_command); |
|
1755
|
540 unwind_protect_str (current_eval_string); |
|
1683
|
541 |
|
|
542 get_input_from_eval_string = 1; |
|
|
543 input_from_command_line_file = 0; |
|
1755
|
544 current_eval_string = s; |
|
1683
|
545 |
|
|
546 YY_BUFFER_STATE old_buf = current_buffer (); |
|
|
547 YY_BUFFER_STATE new_buf = create_buffer (0); |
|
|
548 |
|
2800
|
549 add_unwind_protect (restore_input_buffer, old_buf); |
|
|
550 add_unwind_protect (delete_input_buffer, new_buf); |
|
1683
|
551 |
|
|
552 switch_to_buffer (new_buf); |
|
|
553 |
|
|
554 unwind_protect_ptr (curr_sym_tab); |
|
|
555 |
|
|
556 reset_parser (); |
|
|
557 |
|
|
558 parse_status = yyparse (); |
|
|
559 |
|
|
560 // Important to reset the idea of where input is coming from before |
|
|
561 // trying to eval the command we just parsed -- it might contain the |
|
|
562 // name of an function file that still needs to be parsed! |
|
|
563 |
|
|
564 tree_statement_list *command = global_command; |
|
|
565 |
|
|
566 run_unwind_frame ("eval_string"); |
|
|
567 |
|
2086
|
568 octave_value_list retval; |
|
1683
|
569 |
|
|
570 if (parse_status == 0 && command) |
|
|
571 { |
|
|
572 retval = command->eval (print, nargout); |
|
|
573 delete command; |
|
|
574 } |
|
|
575 |
|
|
576 return retval; |
|
|
577 } |
|
|
578 |
|
2086
|
579 octave_value |
|
2859
|
580 eval_string (const string& s, bool print, int& parse_status) |
|
1683
|
581 { |
|
2086
|
582 octave_value retval; |
|
1683
|
583 |
|
2086
|
584 octave_value_list tmp = eval_string (s, print, parse_status, 1); |
|
1683
|
585 |
|
|
586 retval = tmp(0); |
|
|
587 |
|
|
588 return retval; |
|
|
589 } |
|
|
590 |
|
2086
|
591 static octave_value_list |
|
2859
|
592 eval_string (const octave_value& arg, bool print, int& parse_status, |
|
2806
|
593 int nargout) |
|
1683
|
594 { |
|
1755
|
595 string s = arg.string_value (); |
|
1683
|
596 |
|
|
597 if (error_state) |
|
|
598 { |
|
|
599 error ("eval: expecting string argument"); |
|
|
600 return -1.0; |
|
|
601 } |
|
|
602 |
|
2806
|
603 return eval_string (s, print, parse_status, nargout); |
|
1683
|
604 } |
|
|
605 |
|
1957
|
606 DEFUN (eval, args, nargout, |
|
1683
|
607 "eval (TRY, CATCH)\n\ |
|
|
608 \n\ |
|
|
609 Evaluate the string TRY as octave code. If that fails, evaluate the\n\ |
|
|
610 string CATCH.") |
|
|
611 { |
|
2086
|
612 octave_value_list retval; |
|
1683
|
613 |
|
|
614 int nargin = args.length (); |
|
|
615 |
|
|
616 if (nargin > 0) |
|
|
617 { |
|
|
618 begin_unwind_frame ("Feval"); |
|
|
619 |
|
|
620 if (nargin > 1) |
|
|
621 { |
|
|
622 unwind_protect_int (buffer_error_messages); |
|
|
623 buffer_error_messages = 1; |
|
|
624 } |
|
|
625 |
|
|
626 int parse_status = 0; |
|
|
627 |
|
2808
|
628 retval = eval_string (args(0), Vdefault_eval_print_flag, |
|
|
629 parse_status, nargout); |
|
1683
|
630 |
|
|
631 if (nargin > 1 && (parse_status != 0 || error_state)) |
|
|
632 { |
|
|
633 error_state = 0; |
|
|
634 |
|
|
635 // Set up for letting the user print any messages from |
|
|
636 // errors that occurred in the first part of this eval(). |
|
|
637 |
|
|
638 buffer_error_messages = 0; |
|
|
639 bind_global_error_variable (); |
|
|
640 add_unwind_protect (clear_global_error_variable, 0); |
|
|
641 |
|
2808
|
642 eval_string (args(1), 0, parse_status, nargout); |
|
1683
|
643 |
|
2086
|
644 retval = octave_value_list (); |
|
1683
|
645 } |
|
|
646 |
|
|
647 run_unwind_frame ("Feval"); |
|
|
648 } |
|
|
649 else |
|
|
650 print_usage ("eval"); |
|
|
651 |
|
|
652 return retval; |
|
|
653 } |
|
|
654 |
|
|
655 // Execute a shell command. |
|
|
656 |
|
1965
|
657 static void |
|
|
658 cleanup_iprocstream (void *p) |
|
|
659 { |
|
2800
|
660 delete static_cast<iprocstream *> (p); |
|
1965
|
661 } |
|
|
662 |
|
2086
|
663 static octave_value_list |
|
2321
|
664 run_command_and_return_output (const string& cmd_str) |
|
2083
|
665 { |
|
2086
|
666 octave_value_list retval; |
|
2083
|
667 |
|
|
668 iprocstream *cmd = new iprocstream (cmd_str.c_str ()); |
|
|
669 |
|
|
670 add_unwind_protect (cleanup_iprocstream, cmd); |
|
|
671 |
|
|
672 int status = 127; |
|
|
673 |
|
|
674 if (cmd && *cmd) |
|
|
675 { |
|
|
676 ostrstream output_buf; |
|
2095
|
677 |
|
2083
|
678 char ch; |
|
|
679 while (cmd->get (ch)) |
|
2321
|
680 output_buf.put (ch); |
|
2083
|
681 |
|
|
682 status = cmd->close (); |
|
|
683 |
|
|
684 // The value in status is as returned by waitpid. If the |
|
|
685 // process exited normally, extract the actual exit status of |
|
|
686 // the command. Otherwise, return 127 as a failure code. |
|
|
687 |
|
2693
|
688 if (WIFEXITED (status)) |
|
|
689 status = WEXITSTATUS (status); |
|
2083
|
690 |
|
2321
|
691 output_buf << ends; |
|
2145
|
692 |
|
2321
|
693 char *msg = output_buf.str (); |
|
2083
|
694 |
|
2800
|
695 retval(1) = static_cast<double> (status); |
|
2321
|
696 retval(0) = msg; |
|
2083
|
697 |
|
2321
|
698 delete [] msg; |
|
2083
|
699 } |
|
|
700 else |
|
|
701 error ("unable to start subprocess for `%s'", cmd_str.c_str ()); |
|
|
702 |
|
|
703 run_unwind_protect (); |
|
|
704 |
|
|
705 return retval; |
|
|
706 } |
|
|
707 |
|
1957
|
708 DEFUN (system, args, nargout, |
|
2083
|
709 "system (STRING [, RETURN_OUTPUT] [, TYPE])\n\ |
|
|
710 \n\ |
|
|
711 Execute the shell command specified by STRING.\n\ |
|
|
712 \n\ |
|
|
713 If TYPE is \"async\", the process is started in the background and the\n\ |
|
|
714 pid of the child proces is returned immediately. Otherwise, the\n\ |
|
|
715 process is started, and Octave waits until it exits. If TYPE argument\n\ |
|
|
716 is omitted, a value of \"sync\" is assumed.\n\ |
|
|
717 \n\ |
|
|
718 If NARGIN == 2 (the actual value of RETURN_OUTPUT is irrelevant) and\n\ |
|
|
719 the subprocess is started synchronously, or if system() is called with\n\ |
|
|
720 NARGIN == 1 and NARGOUT > 0, the output from the command is returned.\n\ |
|
|
721 Otherwise, if the subprocess is executed synchronously, it's output is\n\ |
|
2321
|
722 sent to the standard output. To send the output of a command executed\n\ |
|
|
723 with system() through the pager, use a command like\n\ |
|
|
724 \n\ |
|
|
725 disp (system (CMD, 1));\n\ |
|
|
726 \n\ |
|
|
727 or\n\ |
|
|
728 \n\ |
|
2322
|
729 printf (\"%s\\n\", system (CMD, 1));") |
|
1683
|
730 { |
|
2086
|
731 octave_value_list retval; |
|
1683
|
732 |
|
|
733 int nargin = args.length (); |
|
|
734 |
|
2083
|
735 if (nargin > 0 && nargin < 4) |
|
1683
|
736 { |
|
2083
|
737 bool return_output = (nargout > 0 || nargin > 1); |
|
|
738 |
|
|
739 string cmd_str = args(0).string_value (); |
|
|
740 |
|
|
741 enum exec_type { sync, async }; |
|
|
742 |
|
|
743 exec_type type = sync; |
|
|
744 |
|
|
745 if (! error_state) |
|
|
746 { |
|
|
747 if (nargin > 2) |
|
|
748 { |
|
|
749 string type_str = args(2).string_value (); |
|
1683
|
750 |
|
2083
|
751 if (! error_state) |
|
|
752 { |
|
|
753 if (type_str == "sync") |
|
|
754 type = sync; |
|
|
755 else if (type_str == "async") |
|
|
756 type = async; |
|
|
757 else |
|
|
758 error ("system: third arg must be \"sync\" or \"async\""); |
|
|
759 } |
|
|
760 else |
|
|
761 error ("system: third argument must be a string"); |
|
|
762 } |
|
|
763 } |
|
|
764 else |
|
|
765 error ("system: expecting string as first argument"); |
|
1683
|
766 |
|
2083
|
767 if (! error_state) |
|
|
768 { |
|
|
769 if (type == async) |
|
|
770 { |
|
|
771 pid_t pid = fork (); |
|
|
772 |
|
|
773 if (pid < 0) |
|
|
774 error ("system: fork failed -- can't create child process"); |
|
|
775 else if (pid == 0) |
|
|
776 { |
|
|
777 system (cmd_str.c_str ()); |
|
|
778 exit (0); |
|
|
779 retval(0) = 0.0; |
|
|
780 } |
|
|
781 else |
|
2800
|
782 retval(0) = static_cast<double> (pid); |
|
2083
|
783 } |
|
2321
|
784 else if (return_output) |
|
|
785 retval = run_command_and_return_output (cmd_str); |
|
2083
|
786 else |
|
2321
|
787 { |
|
|
788 int status = system (cmd_str.c_str ()); |
|
|
789 |
|
|
790 // The value in status is as returned by waitpid. If |
|
|
791 // the process exited normally, extract the actual exit |
|
|
792 // status of the command. Otherwise, return 127 as a |
|
|
793 // failure code. |
|
|
794 |
|
2693
|
795 if (WIFEXITED (status)) |
|
|
796 status = WEXITSTATUS (status); |
|
2321
|
797 |
|
2800
|
798 retval = static_cast<double> (status); |
|
2321
|
799 } |
|
2083
|
800 } |
|
1683
|
801 } |
|
|
802 else |
|
2083
|
803 print_usage ("system"); |
|
1683
|
804 |
|
|
805 return retval; |
|
|
806 } |
|
|
807 |
|
|
808 DEFALIAS (shell_cmd, system); |
|
|
809 |
|
2614
|
810 // XXX FIXME XXX -- this should really be static, but that causes |
|
|
811 // problems on some systems. |
|
|
812 SLStack<string> octave_atexit_functions; |
|
2077
|
813 |
|
|
814 void |
|
|
815 do_octave_atexit (void) |
|
|
816 { |
|
|
817 while (! octave_atexit_functions.empty ()) |
|
|
818 { |
|
2086
|
819 octave_value_list fcn = octave_atexit_functions.pop (); |
|
2077
|
820 |
|
2859
|
821 feval (fcn, false); |
|
2077
|
822 } |
|
|
823 } |
|
|
824 |
|
2162
|
825 DEFUN (atexit, args, , |
|
2077
|
826 "atexit (NAME): register NAME as a function to call when Octave exits\n\ |
|
|
827 \n\ |
|
2802
|
828 Functions are called with no arguments in the reverse of the order in\n\ |
|
2077
|
829 which they were registered with atexit()") |
|
|
830 { |
|
2086
|
831 octave_value_list retval; |
|
2077
|
832 |
|
|
833 int nargin = args.length (); |
|
|
834 |
|
|
835 if (nargin == 1) |
|
|
836 { |
|
2475
|
837 #if defined (HAVE_ATEXIT) || defined (HAVE_ON_EXIT) |
|
2077
|
838 string arg = args(0).string_value (); |
|
|
839 |
|
|
840 if (! error_state) |
|
|
841 octave_atexit_functions.push (arg); |
|
|
842 else |
|
|
843 error ("atexit: argument must be a string"); |
|
2475
|
844 #else |
|
|
845 gripe_not_supported ("atexit"); |
|
|
846 #endif |
|
2077
|
847 } |
|
|
848 else |
|
|
849 print_usage ("atexit"); |
|
|
850 |
|
|
851 return retval; |
|
|
852 } |
|
|
853 |
|
2689
|
854 DEFUN (octave_config_info, args, , |
|
|
855 "octave_config_info (OPTION)\n\ |
|
|
856 \n\ |
|
|
857 If OPTION is a string, return the configuration information for the\n\ |
|
|
858 specified option.\n\ |
|
|
859 \n\ |
|
|
860 With no arguments, return a structure containing configuration\n\ |
|
|
861 information.") |
|
2162
|
862 { |
|
2689
|
863 octave_value retval; |
|
|
864 |
|
2696
|
865 #if defined (WITH_DYNAMIC_LINKING) && (defined (WITH_DL) || defined (WITH_SHL)) |
|
2689
|
866 bool octave_supports_dynamic_linking = true; |
|
|
867 #else |
|
|
868 bool octave_supports_dynamic_linking = false; |
|
|
869 #endif |
|
|
870 |
|
2162
|
871 Octave_map m; |
|
|
872 |
|
|
873 m ["default_pager"] = DEFAULT_PAGER; |
|
|
874 m ["prefix"] = OCTAVE_PREFIX; |
|
|
875 m ["exec_prefix"] = OCTAVE_EXEC_PREFIX; |
|
|
876 m ["datadir"] = OCTAVE_DATADIR; |
|
2800
|
877 m ["dld"] = static_cast<double> (octave_supports_dynamic_linking); |
|
2162
|
878 m ["libdir"] = OCTAVE_LIBDIR; |
|
|
879 m ["bindir"] = OCTAVE_BINDIR; |
|
|
880 m ["infodir"] = OCTAVE_INFODIR; |
|
|
881 m ["fcnfiledir"] = OCTAVE_FCNFILEDIR; |
|
|
882 m ["localfcnfiledir"] = OCTAVE_LOCALFCNFILEDIR; |
|
|
883 m ["localstartupfiledir"] = OCTAVE_LOCALSTARTUPFILEDIR; |
|
|
884 m ["startupfiledir"] = OCTAVE_STARTUPFILEDIR; |
|
|
885 m ["localfcnfilepath"] = OCTAVE_LOCALFCNFILEPATH; |
|
|
886 m ["archlibdir"] = OCTAVE_ARCHLIBDIR; |
|
2439
|
887 m ["localarchlibdir"] = OCTAVE_LOCALARCHLIBDIR; |
|
2162
|
888 m ["octfiledir"] = OCTAVE_OCTFILEDIR; |
|
|
889 m ["localoctfilepath"] = OCTAVE_LOCALOCTFILEPATH; |
|
|
890 m ["fcnfilepath"] = OCTAVE_FCNFILEPATH; |
|
|
891 m ["imagepath"] = OCTAVE_IMAGEPATH; |
|
|
892 m ["target_host_type"] = TARGET_HOST_TYPE; |
|
|
893 m ["configure_options"] = config_opts; |
|
|
894 m ["F77"] = F77; |
|
|
895 m ["FFLAGS"] = FFLAGS; |
|
|
896 m ["FPICFLAG"] = FPICFLAG; |
|
|
897 m ["F2C"] = F2C; |
|
|
898 m ["F2CFLAGS"] = F2CFLAGS; |
|
|
899 m ["FLIBS"] = FLIBS; |
|
|
900 m ["CPPFLAGS"] = CPPFLAGS; |
|
|
901 m ["INCFLAGS"] = INCFLAGS; |
|
|
902 m ["CC"] = CC " " CC_VERSION; |
|
|
903 m ["CFLAGS"] = CFLAGS; |
|
|
904 m ["CPICFLAG"] = CPICFLAG; |
|
|
905 m ["CXX"] = CXX " " CXX_VERSION; |
|
|
906 m ["CXXFLAGS"] = CXXFLAGS; |
|
|
907 m ["CXXPICFLAG"] = CXXPICFLAG; |
|
|
908 m ["LDFLAGS"] = LDFLAGS; |
|
|
909 m ["LIBFLAGS"] = LIBFLAGS; |
|
2675
|
910 m ["RLD_FLAG"] = RLD_FLAG; |
|
2162
|
911 m ["TERMLIBS"] = TERMLIBS; |
|
|
912 m ["LIBS"] = LIBS; |
|
|
913 m ["LEXLIB"] = LEXLIB; |
|
|
914 m ["LIBPLPLOT"] = LIBPLPLOT; |
|
|
915 m ["LIBDLFCN"] = LIBDLFCN; |
|
|
916 m ["DEFS"] = DEFS; |
|
|
917 |
|
2689
|
918 int nargin = args.length (); |
|
|
919 |
|
|
920 if (nargin == 1) |
|
|
921 { |
|
|
922 string arg = args(0).string_value (); |
|
|
923 |
|
|
924 if (! error_state) |
|
|
925 retval = octave_value (m [arg.c_str ()]); |
|
|
926 } |
|
|
927 else if (nargin == 0) |
|
|
928 retval = octave_value (m); |
|
|
929 else |
|
|
930 print_usage ("octave_config_info"); |
|
|
931 |
|
|
932 return retval; |
|
2162
|
933 } |
|
|
934 |
|
1683
|
935 #if defined (__GNUG__) && defined (DEBUG_NEW_DELETE) |
|
2806
|
936 |
|
1683
|
937 int debug_new_delete = 0; |
|
|
938 |
|
|
939 typedef void (*vfp)(void); |
|
|
940 extern vfp __new_handler; |
|
|
941 |
|
|
942 void * |
|
|
943 __builtin_new (size_t sz) |
|
|
944 { |
|
|
945 void *p; |
|
|
946 |
|
|
947 /* malloc (0) is unpredictable; avoid it. */ |
|
|
948 if (sz == 0) |
|
|
949 sz = 1; |
|
2800
|
950 p = malloc (sz); |
|
1683
|
951 while (p == 0) |
|
|
952 { |
|
|
953 (*__new_handler) (); |
|
2800
|
954 p = malloc (sz); |
|
1683
|
955 } |
|
|
956 |
|
|
957 if (debug_new_delete) |
|
|
958 cout << "__builtin_new: " << p << endl; |
|
|
959 |
|
|
960 return p; |
|
|
961 } |
|
|
962 |
|
|
963 void |
|
|
964 __builtin_delete (void *ptr) |
|
|
965 { |
|
|
966 if (debug_new_delete) |
|
|
967 cout << "__builtin_delete: " << ptr << endl; |
|
|
968 |
|
|
969 if (ptr) |
|
|
970 free (ptr); |
|
|
971 } |
|
2806
|
972 |
|
1683
|
973 #endif |
|
|
974 |
|
2806
|
975 static int |
|
|
976 default_eval_print_flag (void) |
|
|
977 { |
|
|
978 Vdefault_eval_print_flag = check_preference ("default_eval_print_flag"); |
|
|
979 |
|
|
980 return 0; |
|
|
981 } |
|
|
982 |
|
|
983 void |
|
|
984 symbols_of_toplev (void) |
|
|
985 { |
|
|
986 DEFVAR (default_eval_print_flag, 1.0, 0, default_eval_print_flag, |
|
|
987 "If the value of this variable is nonzero, Octave will print the\n\ |
|
|
988 results of commands executed by eval() that do not end with semicolons."); |
|
|
989 |
|
|
990 } |
|
|
991 |
|
1683
|
992 /* |
|
|
993 ;;; Local Variables: *** |
|
|
994 ;;; mode: C++ *** |
|
|
995 ;;; End: *** |
|
|
996 */ |
