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1 /* |
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2 |
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3 Copyright (C) 1996 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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2370
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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 "pager.h" |
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64 #include "parse.h" |
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65 #include "pathsearch.h" |
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66 #include "procstream.h" |
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2370
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67 #include "ov.h" |
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68 #include "pt-fvc.h" |
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69 #include "pt-misc.h" |
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70 #include "pt-plot.h" |
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71 #include "sighandlers.h" |
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72 #include "sysdep.h" |
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73 #include "toplev.h" |
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74 #include "unwind-prot.h" |
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75 #include "utils.h" |
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76 #include "variables.h" |
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77 #include <version.h> |
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78 |
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79 // argv[0] for this program. |
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2204
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80 string Vprogram_invocation_name; |
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81 |
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82 // Cleaned-up name of this program, not including path information. |
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83 string Vprogram_name; |
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84 |
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85 // Login name for user running this program. |
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86 string Vuser_name; |
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87 |
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88 // Name of the host we are running on. |
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2204
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89 string Vhost_name; |
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90 |
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91 // User's home directory. |
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92 string Vhome_directory; |
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93 |
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94 // Nonzero means we're breaking out of a loop or function body. |
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95 extern int breaking; |
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96 |
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97 // Nonzero means we're returning from a function. |
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98 extern int returning; |
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99 |
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100 // Nonzero means we are using readline. |
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101 // (--no-line-editing) |
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102 #if defined (USE_READLINE) |
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103 int using_readline = 1; |
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104 #else |
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105 int using_readline = 0; |
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106 #endif |
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107 |
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108 #if defined (USE_READLINE) |
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109 // This is from readline's rltty.c: |
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110 extern "C" void rl_deprep_terminal (void); |
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111 #endif |
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112 |
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113 // Nonzero means we printed messages about reading startup files. |
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114 int reading_startup_message_printed = 0; |
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115 |
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116 // Command number, counting from the beginning of this session. |
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117 int current_command_number = 1; |
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118 |
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119 // Nonzero means we are exiting via the builtin exit or quit functions. |
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120 int quitting_gracefully = 0; |
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121 |
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122 // Current command to execute. |
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123 tree_statement_list *global_command = 0; |
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124 |
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125 // Pointer to function that is currently being evaluated. |
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126 tree_function *curr_function = 0; |
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127 |
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128 // Nonzero means input is coming from startup file. |
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129 int input_from_startup_file = 0; |
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130 |
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131 // Nonzero means that input is coming from a file that was named on |
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132 // the command line. |
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133 int input_from_command_line_file = 1; |
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134 |
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1907
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135 // Top level context (?) |
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136 jmp_buf toplevel; |
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137 |
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138 void |
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139 parse_and_execute (FILE *f, int print) |
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140 { |
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141 begin_unwind_frame ("parse_and_execute"); |
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142 |
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143 YY_BUFFER_STATE old_buf = current_buffer (); |
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144 YY_BUFFER_STATE new_buf = create_buffer (f); |
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145 |
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146 add_unwind_protect (restore_input_buffer, (void *) old_buf); |
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147 add_unwind_protect (delete_input_buffer, (void *) new_buf); |
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148 |
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149 switch_to_buffer (new_buf); |
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150 |
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151 unwind_protect_int (using_readline); |
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152 unwind_protect_int (input_from_command_line_file); |
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153 |
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154 using_readline = 0; |
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155 input_from_command_line_file = 0; |
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156 |
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157 unwind_protect_ptr (curr_sym_tab); |
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158 |
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159 int retval; |
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160 do |
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161 { |
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162 reset_parser (); |
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163 |
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164 retval = yyparse (); |
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165 |
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166 if (retval == 0 && global_command) |
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167 { |
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168 global_command->eval (print); |
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169 |
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170 delete global_command; |
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171 |
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172 global_command = 0; |
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173 |
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174 bool quit = (returning || breaking); |
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175 |
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176 if (returning) |
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177 returning = 0; |
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178 |
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179 if (breaking) |
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180 breaking--; |
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181 |
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182 if (error_state) |
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183 { |
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184 error ("near line %d of file `%s'", input_line_number, |
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185 curr_fcn_file_full_name.c_str ()); |
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186 |
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187 break; |
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188 } |
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189 |
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190 if (quit) |
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191 break; |
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192 } |
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193 } |
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194 while (retval == 0); |
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195 |
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196 run_unwind_frame ("parse_and_execute"); |
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197 } |
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198 |
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199 static void |
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200 safe_fclose (void *f) |
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201 { |
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202 if (f) |
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203 fclose ((FILE *) f); |
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204 } |
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205 |
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206 void |
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207 parse_and_execute (const string& s, int print, int verbose, |
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208 const char *warn_for) |
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209 { |
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210 begin_unwind_frame ("parse_and_execute_2"); |
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211 |
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212 unwind_protect_int (reading_script_file); |
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213 unwind_protect_str (curr_fcn_file_full_name); |
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214 |
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215 reading_script_file = 1; |
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216 curr_fcn_file_full_name = s; |
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217 |
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218 FILE *f = get_input_from_file (s, 0); |
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219 |
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220 if (f) |
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221 { |
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222 add_unwind_protect (safe_fclose, (void *) f); |
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223 |
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224 unwind_protect_int (input_line_number); |
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225 unwind_protect_int (current_input_column); |
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226 |
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227 input_line_number = 0; |
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228 current_input_column = 1; |
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229 |
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230 if (verbose) |
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231 { |
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232 cout << "reading commands from " << s << " ... "; |
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233 reading_startup_message_printed = 1; |
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234 cout.flush (); |
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235 } |
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236 |
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237 parse_and_execute (f, print); |
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238 |
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239 if (verbose) |
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240 cout << "done." << endl; |
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241 } |
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242 else if (warn_for) |
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243 error ("%s: unable to open file `%s'", warn_for, s.c_str ()); |
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244 |
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245 run_unwind_frame ("parse_and_execute_2"); |
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246 } |
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247 |
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248 int |
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249 main_loop (void) |
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250 { |
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251 // Allow the user to interrupt us without exiting. |
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252 |
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253 octave_save_signal_mask (); |
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254 |
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255 if (setjmp (toplevel) != 0) |
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256 { |
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257 raw_mode (0); |
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258 |
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259 cout << "\n"; |
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260 |
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261 octave_restore_signal_mask (); |
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262 } |
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263 |
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264 can_interrupt = 1; |
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265 |
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2554
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266 octave_catch_interrupts (); |
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267 |
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268 // The big loop. |
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269 |
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270 int retval; |
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271 do |
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272 { |
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273 curr_sym_tab = top_level_sym_tab; |
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274 |
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275 reset_parser (); |
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276 |
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277 retval = yyparse (); |
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278 |
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279 if (retval == 0 && global_command) |
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280 { |
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281 global_command->eval (1); |
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282 |
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283 delete global_command; |
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284 |
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285 global_command = 0; |
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286 |
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287 if (! (interactive || forced_interactive)) |
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288 { |
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289 bool quit = (returning || breaking); |
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290 |
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291 if (returning) |
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292 returning = 0; |
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293 |
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294 if (breaking) |
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295 breaking--; |
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296 |
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297 if (quit) |
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298 break; |
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299 } |
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300 |
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301 if (error_state) |
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302 { |
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303 if (! (interactive || forced_interactive)) |
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304 break; |
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305 } |
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306 else |
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2620
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307 { |
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308 if (octave_completion_matches_called) |
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309 octave_completion_matches_called = false; |
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310 else |
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311 current_command_number++; |
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312 } |
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1907
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313 } |
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314 } |
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315 while (retval == 0); |
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316 |
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317 return retval; |
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318 } |
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319 |
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1957
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320 DEFUN (source, args, , |
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321 "source (FILE)\n\ |
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322 \n\ |
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323 Parse and execute the contents of FILE. Like executing commands in a\n\ |
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324 script file but without requiring the file to be named `FILE.m'.") |
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325 { |
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326 octave_value_list retval; |
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327 |
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328 int nargin = args.length (); |
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329 |
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330 if (nargin == 1) |
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331 { |
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332 string file = args(0).string_value (); |
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333 |
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334 if (! error_state) |
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335 { |
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336 file = oct_tilde_expand (file); |
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337 |
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338 parse_and_execute (file, 1, 0, "source"); |
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339 |
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340 if (error_state) |
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341 error ("source: error sourcing file `%s'", file.c_str ()); |
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342 } |
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343 else |
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344 error ("source: expecting file name as argument"); |
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345 } |
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346 else |
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347 print_usage ("source"); |
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348 |
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349 return retval; |
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350 } |
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351 |
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352 // Fix up things before exiting. |
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353 |
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354 void |
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355 clean_up_and_exit (int retval) |
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356 { |
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2552
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357 #if defined (USE_READLINE) |
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358 rl_deprep_terminal (); |
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359 #else |
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360 raw_mode (0); |
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2552
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361 #endif |
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362 |
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1799
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363 octave_command_history.clean_up_and_save (); |
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364 |
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365 close_plot_stream (); |
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366 |
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367 close_files (); |
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368 |
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369 cleanup_tmp_files (); |
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370 |
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371 if (!quitting_gracefully && (interactive || forced_interactive)) |
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372 cout << "\n"; |
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373 |
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374 if (retval == EOF) |
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375 retval = 0; |
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376 |
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377 exit (retval); |
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378 |
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379 // This is bogus but should prevent g++ from giving a warning saying |
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380 // that this volatile function does return. |
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381 |
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382 panic_impossible (); |
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383 } |
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384 |
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1957
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385 DEFUN_TEXT (casesen, args, , |
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386 "casesen [on|off]") |
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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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1755
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390 int argc = args.length () + 1; |
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391 |
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1965
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392 string_vector argv = args.make_argv ("casesen"); |
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393 |
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1755
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394 if (error_state) |
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395 return retval; |
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396 |
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397 if (argc == 1 || (argc > 1 && argv[1] == "off")) |
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398 warning ("casesen: sorry, Octave is always case sensitive"); |
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1755
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399 else if (argc > 1 && argv[1] == "on") |
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400 ; // ok. |
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401 else |
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402 print_usage ("casesen"); |
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403 |
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404 return retval; |
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405 } |
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406 |
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1957
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407 DEFUN (computer, args, nargout, |
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408 "computer ():\n\ |
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409 \n\ |
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410 Have Octave ask the system, \"What kind of computer are you?\"") |
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411 { |
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2086
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412 octave_value_list retval; |
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413 |
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414 int nargin = args.length (); |
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415 |
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416 if (nargin != 0) |
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417 warning ("computer: ignoring extra arguments"); |
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418 |
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2095
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419 string msg; |
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1683
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420 |
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421 if (strcmp (TARGET_HOST_TYPE, "unknown") == 0) |
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2095
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422 msg = "Hi Dave, I'm a HAL-9000"; |
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1683
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423 else |
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2095
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424 msg = TARGET_HOST_TYPE; |
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1683
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425 |
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426 if (nargout == 0) |
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2095
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427 octave_stdout << msg << "\n"; |
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1683
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428 else |
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2095
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429 retval = msg; |
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1683
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430 |
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431 return retval; |
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432 } |
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433 |
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2068
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434 DEFUN (quit, args, , |
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435 "quit (STATUS): exit Octave gracefully, returning STATUS to the system.\n\ |
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436 \n\ |
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437 STATUS should be an integer value. If STATUS is missing, 0 is assumed.") |
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1683
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438 { |
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2086
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439 octave_value_list retval; |
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2068
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440 |
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441 int exit_status = 0; |
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442 |
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443 quitting_gracefully = 1; |
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444 |
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1683
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445 int nargin = args.length (); |
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446 |
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447 if (nargin > 0) |
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2068
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448 { |
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449 // XXX FIXME XXX -- need a safe uniform way to do this. |
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1683
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450 |
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2068
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451 double tmp = args(0).double_value (); |
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1683
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452 |
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2068
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453 if (! error_state && ! xisnan (tmp)) |
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454 exit_status = NINT (tmp); |
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455 } |
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456 |
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457 clean_up_and_exit (exit_status); |
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458 |
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1683
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459 return retval; |
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460 } |
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461 |
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462 DEFALIAS (exit, quit); |
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463 |
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1957
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464 DEFUN (warranty, , , |
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1683
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465 "warranty (): describe copying conditions") |
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466 { |
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2086
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467 octave_value_list retval; |
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1683
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468 |
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2095
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469 octave_stdout << "\n" OCTAVE_NAME_VERSION_AND_COPYRIGHT "\n\n\ |
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1683
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470 This program is free software; you can redistribute it and/or modify\n\ |
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471 it under the terms of the GNU General Public License as published by\n\ |
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472 the Free Software Foundation; either version 2 of the License, or\n\ |
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473 (at your option) any later version.\n\ |
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474 \n\ |
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475 This program is distributed in the hope that it will be useful,\n\ |
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476 but WITHOUT ANY WARRANTY; without even the implied warranty of\n\ |
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|
477 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n\ |
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|
478 GNU General Public License for more details.\n\ |
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479 \n\ |
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480 You should have received a copy of the GNU General Public License\n\ |
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481 along with this program. If not, write to the Free Software\n\ |
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|
482 Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.\n\ |
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483 \n"; |
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484 |
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485 return retval; |
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486 } |
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487 |
|
|
488 // XXX FIXME XXX -- this may not be the best place for these... |
|
|
489 |
|
2086
|
490 octave_value_list |
|
|
491 feval (const octave_value_list& args, int nargout) |
|
1683
|
492 { |
|
2086
|
493 octave_value_list retval; |
|
1683
|
494 |
|
|
495 tree_fvc *fcn = is_valid_function (args(0), "feval", 1); |
|
|
496 if (fcn) |
|
|
497 { |
|
|
498 int tmp_nargin = args.length () - 1; |
|
2086
|
499 octave_value_list tmp_args; |
|
1683
|
500 tmp_args.resize (tmp_nargin); |
|
|
501 for (int i = 0; i < tmp_nargin; i++) |
|
|
502 tmp_args(i) = args(i+1); |
|
|
503 retval = fcn->eval (0, nargout, tmp_args); |
|
|
504 } |
|
|
505 |
|
|
506 return retval; |
|
|
507 } |
|
|
508 |
|
1957
|
509 DEFUN (feval, args, nargout, |
|
1683
|
510 "feval (NAME, ARGS, ...)\n\ |
|
|
511 \n\ |
|
|
512 evaluate NAME as a function, passing ARGS as its arguments") |
|
|
513 { |
|
2086
|
514 octave_value_list retval; |
|
1683
|
515 |
|
|
516 int nargin = args.length (); |
|
|
517 |
|
|
518 if (nargin > 0) |
|
|
519 retval = feval (args, nargout); |
|
|
520 else |
|
|
521 print_usage ("feval"); |
|
|
522 |
|
|
523 return retval; |
|
|
524 } |
|
|
525 |
|
2086
|
526 static octave_value_list |
|
1755
|
527 eval_string (const string& s, int print, int& parse_status, |
|
1683
|
528 int nargout) |
|
|
529 { |
|
|
530 begin_unwind_frame ("eval_string"); |
|
|
531 |
|
|
532 unwind_protect_int (get_input_from_eval_string); |
|
|
533 unwind_protect_int (input_from_command_line_file); |
|
|
534 unwind_protect_ptr (global_command); |
|
1755
|
535 unwind_protect_str (current_eval_string); |
|
1683
|
536 |
|
|
537 get_input_from_eval_string = 1; |
|
|
538 input_from_command_line_file = 0; |
|
1755
|
539 current_eval_string = s; |
|
1683
|
540 |
|
|
541 YY_BUFFER_STATE old_buf = current_buffer (); |
|
|
542 YY_BUFFER_STATE new_buf = create_buffer (0); |
|
|
543 |
|
|
544 add_unwind_protect (restore_input_buffer, (void *) old_buf); |
|
|
545 add_unwind_protect (delete_input_buffer, (void *) new_buf); |
|
|
546 |
|
|
547 switch_to_buffer (new_buf); |
|
|
548 |
|
|
549 unwind_protect_ptr (curr_sym_tab); |
|
|
550 |
|
|
551 reset_parser (); |
|
|
552 |
|
|
553 parse_status = yyparse (); |
|
|
554 |
|
|
555 // Important to reset the idea of where input is coming from before |
|
|
556 // trying to eval the command we just parsed -- it might contain the |
|
|
557 // name of an function file that still needs to be parsed! |
|
|
558 |
|
|
559 tree_statement_list *command = global_command; |
|
|
560 |
|
|
561 run_unwind_frame ("eval_string"); |
|
|
562 |
|
2086
|
563 octave_value_list retval; |
|
1683
|
564 |
|
|
565 if (parse_status == 0 && command) |
|
|
566 { |
|
|
567 retval = command->eval (print, nargout); |
|
|
568 delete command; |
|
|
569 } |
|
|
570 |
|
|
571 return retval; |
|
|
572 } |
|
|
573 |
|
2086
|
574 octave_value |
|
1755
|
575 eval_string (const string& s, int print, int& parse_status) |
|
1683
|
576 { |
|
2086
|
577 octave_value retval; |
|
1683
|
578 |
|
2086
|
579 octave_value_list tmp = eval_string (s, print, parse_status, 1); |
|
1683
|
580 |
|
|
581 retval = tmp(0); |
|
|
582 |
|
|
583 return retval; |
|
|
584 } |
|
|
585 |
|
2086
|
586 static octave_value_list |
|
|
587 eval_string (const octave_value& arg, int& parse_status, int nargout) |
|
1683
|
588 { |
|
1755
|
589 string s = arg.string_value (); |
|
1683
|
590 |
|
|
591 if (error_state) |
|
|
592 { |
|
|
593 error ("eval: expecting string argument"); |
|
|
594 return -1.0; |
|
|
595 } |
|
|
596 |
|
|
597 // Yes Virginia, we always print here... |
|
|
598 |
|
1755
|
599 return eval_string (s, 1, parse_status, nargout); |
|
1683
|
600 } |
|
|
601 |
|
1957
|
602 DEFUN (eval, args, nargout, |
|
1683
|
603 "eval (TRY, CATCH)\n\ |
|
|
604 \n\ |
|
|
605 Evaluate the string TRY as octave code. If that fails, evaluate the\n\ |
|
|
606 string CATCH.") |
|
|
607 { |
|
2086
|
608 octave_value_list retval; |
|
1683
|
609 |
|
|
610 int nargin = args.length (); |
|
|
611 |
|
|
612 if (nargin > 0) |
|
|
613 { |
|
|
614 begin_unwind_frame ("Feval"); |
|
|
615 |
|
|
616 if (nargin > 1) |
|
|
617 { |
|
|
618 unwind_protect_int (buffer_error_messages); |
|
|
619 buffer_error_messages = 1; |
|
|
620 } |
|
|
621 |
|
|
622 int parse_status = 0; |
|
|
623 |
|
|
624 retval = eval_string (args(0), parse_status, nargout); |
|
|
625 |
|
|
626 if (nargin > 1 && (parse_status != 0 || error_state)) |
|
|
627 { |
|
|
628 error_state = 0; |
|
|
629 |
|
|
630 // Set up for letting the user print any messages from |
|
|
631 // errors that occurred in the first part of this eval(). |
|
|
632 |
|
|
633 buffer_error_messages = 0; |
|
|
634 bind_global_error_variable (); |
|
|
635 add_unwind_protect (clear_global_error_variable, 0); |
|
|
636 |
|
|
637 eval_string (args(1), parse_status, nargout); |
|
|
638 |
|
2086
|
639 retval = octave_value_list (); |
|
1683
|
640 } |
|
|
641 |
|
|
642 run_unwind_frame ("Feval"); |
|
|
643 } |
|
|
644 else |
|
|
645 print_usage ("eval"); |
|
|
646 |
|
|
647 return retval; |
|
|
648 } |
|
|
649 |
|
|
650 // Execute a shell command. |
|
|
651 |
|
1965
|
652 static void |
|
|
653 cleanup_iprocstream (void *p) |
|
|
654 { |
|
|
655 delete (iprocstream *) p; |
|
|
656 } |
|
|
657 |
|
2086
|
658 static octave_value_list |
|
2321
|
659 run_command_and_return_output (const string& cmd_str) |
|
2083
|
660 { |
|
2086
|
661 octave_value_list retval; |
|
2083
|
662 |
|
|
663 iprocstream *cmd = new iprocstream (cmd_str.c_str ()); |
|
|
664 |
|
|
665 add_unwind_protect (cleanup_iprocstream, cmd); |
|
|
666 |
|
|
667 int status = 127; |
|
|
668 |
|
|
669 if (cmd && *cmd) |
|
|
670 { |
|
|
671 ostrstream output_buf; |
|
2095
|
672 |
|
2083
|
673 char ch; |
|
|
674 while (cmd->get (ch)) |
|
2321
|
675 output_buf.put (ch); |
|
2083
|
676 |
|
|
677 status = cmd->close (); |
|
|
678 |
|
|
679 // The value in status is as returned by waitpid. If the |
|
|
680 // process exited normally, extract the actual exit status of |
|
|
681 // the command. Otherwise, return 127 as a failure code. |
|
|
682 |
|
|
683 if ((status & 0xff) == 0) |
|
|
684 status = (status & 0xff00) >> 8; |
|
|
685 |
|
2321
|
686 output_buf << ends; |
|
2145
|
687 |
|
2321
|
688 char *msg = output_buf.str (); |
|
2083
|
689 |
|
2321
|
690 retval(1) = (double) status; |
|
|
691 retval(0) = msg; |
|
2083
|
692 |
|
2321
|
693 delete [] msg; |
|
2083
|
694 } |
|
|
695 else |
|
|
696 error ("unable to start subprocess for `%s'", cmd_str.c_str ()); |
|
|
697 |
|
|
698 run_unwind_protect (); |
|
|
699 |
|
|
700 return retval; |
|
|
701 } |
|
|
702 |
|
1957
|
703 DEFUN (system, args, nargout, |
|
2083
|
704 "system (STRING [, RETURN_OUTPUT] [, TYPE])\n\ |
|
|
705 \n\ |
|
|
706 Execute the shell command specified by STRING.\n\ |
|
|
707 \n\ |
|
|
708 If TYPE is \"async\", the process is started in the background and the\n\ |
|
|
709 pid of the child proces is returned immediately. Otherwise, the\n\ |
|
|
710 process is started, and Octave waits until it exits. If TYPE argument\n\ |
|
|
711 is omitted, a value of \"sync\" is assumed.\n\ |
|
|
712 \n\ |
|
|
713 If NARGIN == 2 (the actual value of RETURN_OUTPUT is irrelevant) and\n\ |
|
|
714 the subprocess is started synchronously, or if system() is called with\n\ |
|
|
715 NARGIN == 1 and NARGOUT > 0, the output from the command is returned.\n\ |
|
|
716 Otherwise, if the subprocess is executed synchronously, it's output is\n\ |
|
2321
|
717 sent to the standard output. To send the output of a command executed\n\ |
|
|
718 with system() through the pager, use a command like\n\ |
|
|
719 \n\ |
|
|
720 disp (system (CMD, 1));\n\ |
|
|
721 \n\ |
|
|
722 or\n\ |
|
|
723 \n\ |
|
2322
|
724 printf (\"%s\\n\", system (CMD, 1));") |
|
1683
|
725 { |
|
2086
|
726 octave_value_list retval; |
|
1683
|
727 |
|
|
728 int nargin = args.length (); |
|
|
729 |
|
2083
|
730 if (nargin > 0 && nargin < 4) |
|
1683
|
731 { |
|
2083
|
732 bool return_output = (nargout > 0 || nargin > 1); |
|
|
733 |
|
|
734 string cmd_str = args(0).string_value (); |
|
|
735 |
|
|
736 enum exec_type { sync, async }; |
|
|
737 |
|
|
738 exec_type type = sync; |
|
|
739 |
|
|
740 if (! error_state) |
|
|
741 { |
|
|
742 if (nargin > 2) |
|
|
743 { |
|
|
744 string type_str = args(2).string_value (); |
|
1683
|
745 |
|
2083
|
746 if (! error_state) |
|
|
747 { |
|
|
748 if (type_str == "sync") |
|
|
749 type = sync; |
|
|
750 else if (type_str == "async") |
|
|
751 type = async; |
|
|
752 else |
|
|
753 error ("system: third arg must be \"sync\" or \"async\""); |
|
|
754 } |
|
|
755 else |
|
|
756 error ("system: third argument must be a string"); |
|
|
757 } |
|
|
758 } |
|
|
759 else |
|
|
760 error ("system: expecting string as first argument"); |
|
1683
|
761 |
|
2083
|
762 if (! error_state) |
|
|
763 { |
|
|
764 if (type == async) |
|
|
765 { |
|
|
766 pid_t pid = fork (); |
|
|
767 |
|
|
768 if (pid < 0) |
|
|
769 error ("system: fork failed -- can't create child process"); |
|
|
770 else if (pid == 0) |
|
|
771 { |
|
|
772 system (cmd_str.c_str ()); |
|
|
773 exit (0); |
|
|
774 retval(0) = 0.0; |
|
|
775 } |
|
|
776 else |
|
|
777 retval(0) = (double) pid; |
|
|
778 } |
|
2321
|
779 else if (return_output) |
|
|
780 retval = run_command_and_return_output (cmd_str); |
|
2083
|
781 else |
|
2321
|
782 { |
|
|
783 int status = system (cmd_str.c_str ()); |
|
|
784 |
|
|
785 // The value in status is as returned by waitpid. If |
|
|
786 // the process exited normally, extract the actual exit |
|
|
787 // status of the command. Otherwise, return 127 as a |
|
|
788 // failure code. |
|
|
789 |
|
|
790 if ((status & 0xff) == 0) |
|
|
791 status = (status & 0xff00) >> 8; |
|
|
792 |
|
|
793 retval = (double) status; |
|
|
794 } |
|
2083
|
795 } |
|
1683
|
796 } |
|
|
797 else |
|
2083
|
798 print_usage ("system"); |
|
1683
|
799 |
|
|
800 return retval; |
|
|
801 } |
|
|
802 |
|
|
803 DEFALIAS (shell_cmd, system); |
|
|
804 |
|
2614
|
805 // XXX FIXME XXX -- this should really be static, but that causes |
|
|
806 // problems on some systems. |
|
|
807 SLStack<string> octave_atexit_functions; |
|
2077
|
808 |
|
|
809 void |
|
|
810 do_octave_atexit (void) |
|
|
811 { |
|
|
812 while (! octave_atexit_functions.empty ()) |
|
|
813 { |
|
2086
|
814 octave_value_list fcn = octave_atexit_functions.pop (); |
|
2077
|
815 |
|
|
816 feval (fcn, 0); |
|
|
817 } |
|
|
818 } |
|
|
819 |
|
2162
|
820 DEFUN (atexit, args, , |
|
2077
|
821 "atexit (NAME): register NAME as a function to call when Octave exits\n\ |
|
|
822 \n\ |
|
|
823 Functions are called with no arguments in the reverse of the order in |
|
|
824 which they were registered with atexit()") |
|
|
825 { |
|
2086
|
826 octave_value_list retval; |
|
2077
|
827 |
|
|
828 int nargin = args.length (); |
|
|
829 |
|
|
830 if (nargin == 1) |
|
|
831 { |
|
2475
|
832 #if defined (HAVE_ATEXIT) || defined (HAVE_ON_EXIT) |
|
2077
|
833 string arg = args(0).string_value (); |
|
|
834 |
|
|
835 if (! error_state) |
|
|
836 octave_atexit_functions.push (arg); |
|
|
837 else |
|
|
838 error ("atexit: argument must be a string"); |
|
2475
|
839 #else |
|
|
840 gripe_not_supported ("atexit"); |
|
|
841 #endif |
|
2077
|
842 } |
|
|
843 else |
|
|
844 print_usage ("atexit"); |
|
|
845 |
|
|
846 return retval; |
|
|
847 } |
|
|
848 |
|
2162
|
849 DEFUN (octave_config_info, , , |
|
|
850 "return a structure containing configuration information") |
|
|
851 { |
|
|
852 Octave_map m; |
|
|
853 |
|
|
854 m ["default_pager"] = DEFAULT_PAGER; |
|
|
855 m ["prefix"] = OCTAVE_PREFIX; |
|
|
856 m ["exec_prefix"] = OCTAVE_EXEC_PREFIX; |
|
|
857 m ["datadir"] = OCTAVE_DATADIR; |
|
|
858 m ["libdir"] = OCTAVE_LIBDIR; |
|
|
859 m ["bindir"] = OCTAVE_BINDIR; |
|
|
860 m ["infodir"] = OCTAVE_INFODIR; |
|
|
861 m ["fcnfiledir"] = OCTAVE_FCNFILEDIR; |
|
|
862 m ["localfcnfiledir"] = OCTAVE_LOCALFCNFILEDIR; |
|
|
863 m ["localstartupfiledir"] = OCTAVE_LOCALSTARTUPFILEDIR; |
|
|
864 m ["startupfiledir"] = OCTAVE_STARTUPFILEDIR; |
|
|
865 m ["localfcnfilepath"] = OCTAVE_LOCALFCNFILEPATH; |
|
|
866 m ["archlibdir"] = OCTAVE_ARCHLIBDIR; |
|
2439
|
867 m ["localarchlibdir"] = OCTAVE_LOCALARCHLIBDIR; |
|
2162
|
868 m ["octfiledir"] = OCTAVE_OCTFILEDIR; |
|
|
869 m ["localoctfilepath"] = OCTAVE_LOCALOCTFILEPATH; |
|
|
870 m ["fcnfilepath"] = OCTAVE_FCNFILEPATH; |
|
|
871 m ["imagepath"] = OCTAVE_IMAGEPATH; |
|
|
872 m ["target_host_type"] = TARGET_HOST_TYPE; |
|
|
873 m ["configure_options"] = config_opts; |
|
|
874 m ["F77"] = F77; |
|
|
875 m ["FFLAGS"] = FFLAGS; |
|
|
876 m ["FPICFLAG"] = FPICFLAG; |
|
|
877 m ["F2C"] = F2C; |
|
|
878 m ["F2CFLAGS"] = F2CFLAGS; |
|
|
879 m ["FLIBS"] = FLIBS; |
|
|
880 m ["CPPFLAGS"] = CPPFLAGS; |
|
|
881 m ["INCFLAGS"] = INCFLAGS; |
|
|
882 m ["CC"] = CC " " CC_VERSION; |
|
|
883 m ["CFLAGS"] = CFLAGS; |
|
|
884 m ["CPICFLAG"] = CPICFLAG; |
|
|
885 m ["CXX"] = CXX " " CXX_VERSION; |
|
|
886 m ["CXXFLAGS"] = CXXFLAGS; |
|
|
887 m ["CXXPICFLAG"] = CXXPICFLAG; |
|
|
888 m ["LDFLAGS"] = LDFLAGS; |
|
|
889 m ["LIBFLAGS"] = LIBFLAGS; |
|
|
890 m ["CXXLIBS"] = CXXLIBS; |
|
|
891 m ["TERMLIBS"] = TERMLIBS; |
|
|
892 m ["LIBS"] = LIBS; |
|
|
893 m ["LEXLIB"] = LEXLIB; |
|
|
894 m ["LIBPLPLOT"] = LIBPLPLOT; |
|
|
895 m ["LIBDLFCN"] = LIBDLFCN; |
|
|
896 m ["DEFS"] = DEFS; |
|
|
897 |
|
|
898 return octave_value (m); |
|
|
899 } |
|
|
900 |
|
1683
|
901 #if defined (__GNUG__) && defined (DEBUG_NEW_DELETE) |
|
|
902 int debug_new_delete = 0; |
|
|
903 |
|
|
904 typedef void (*vfp)(void); |
|
|
905 extern vfp __new_handler; |
|
|
906 |
|
|
907 void * |
|
|
908 __builtin_new (size_t sz) |
|
|
909 { |
|
|
910 void *p; |
|
|
911 |
|
|
912 /* malloc (0) is unpredictable; avoid it. */ |
|
|
913 if (sz == 0) |
|
|
914 sz = 1; |
|
|
915 p = (void *) malloc (sz); |
|
|
916 while (p == 0) |
|
|
917 { |
|
|
918 (*__new_handler) (); |
|
|
919 p = (void *) malloc (sz); |
|
|
920 } |
|
|
921 |
|
|
922 if (debug_new_delete) |
|
|
923 cout << "__builtin_new: " << p << endl; |
|
|
924 |
|
|
925 return p; |
|
|
926 } |
|
|
927 |
|
|
928 void |
|
|
929 __builtin_delete (void *ptr) |
|
|
930 { |
|
|
931 if (debug_new_delete) |
|
|
932 cout << "__builtin_delete: " << ptr << endl; |
|
|
933 |
|
|
934 if (ptr) |
|
|
935 free (ptr); |
|
|
936 } |
|
|
937 #endif |
|
|
938 |
|
|
939 /* |
|
|
940 ;;; Local Variables: *** |
|
|
941 ;;; mode: C++ *** |
|
|
942 ;;; End: *** |
|
|
943 */ |
