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1
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1 // octave.cc -*- C++ -*- |
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2 /* |
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3 |
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4 Copyright (C) 1992, 1993, 1994, 1995 John W. Eaton |
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5 |
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6 This file is part of Octave. |
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7 |
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8 Octave is free software; you can redistribute it and/or modify it |
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9 under the terms of the GNU General Public License as published by the |
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10 Free Software Foundation; either version 2, or (at your option) any |
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11 later version. |
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12 |
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13 Octave is distributed in the hope that it will be useful, but WITHOUT |
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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16 for more details. |
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17 |
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18 You should have received a copy of the GNU General Public License |
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19 along with Octave; see the file COPYING. If not, write to the Free |
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20 Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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21 |
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22 */ |
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23 |
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24 // Born February 20, 1992. |
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25 |
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240
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26 #ifdef HAVE_CONFIG_H |
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1192
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27 #include <config.h> |
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28 #endif |
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29 |
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1355
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30 #include <cassert> |
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31 #include <csetjmp> |
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32 #include <csignal> |
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33 #include <cstdlib> |
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34 #include <cstring> |
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35 #include <ctime> |
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36 |
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37 #include <fstream.h> |
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38 #include <iostream.h> |
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39 #include <strstream.h> |
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40 |
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41 #ifdef HAVE_UNISTD_H |
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42 #include <sys/types.h> |
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139
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43 #include <unistd.h> |
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44 #endif |
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45 |
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46 #include <pwd.h> |
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47 |
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240
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48 #include "lo-error.h" |
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223
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49 |
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50 #include "builtins.h" |
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51 #include "defaults.h" |
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52 #include "defun.h" |
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703
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53 #include "dynamic-ld.h" |
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1355
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54 #include "error.h" |
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55 #include "file-io.h" |
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1766
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56 #include "file-ops.h" |
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1355
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57 #include "help.h" |
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1
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58 #include "input.h" |
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59 #include "lex.h" |
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1742
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60 #include "oct-hist.h" |
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1670
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61 #include "toplev.h" |
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1355
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62 #include "pager.h" |
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1
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63 #include "parse.h" |
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1355
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64 #include "pathsearch.h" |
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562
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65 #include "procstream.h" |
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1817
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66 #include "prog-args.h" |
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1355
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67 #include "sighandlers.h" |
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68 #include "sysdep.h" |
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1742
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69 #include "pt-const.h" |
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70 #include "pt-misc.h" |
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71 #include "pt-plot.h" |
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1
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72 #include "unwind-prot.h" |
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1355
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73 #include "user-prefs.h" |
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74 #include "utils.h" |
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75 #include "variables.h" |
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1
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76 #include "version.h" |
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77 |
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1704
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78 #if !defined (HAVE_ATEXIT) && defined (HAVE_ON_EXIT) |
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79 extern "C" int on_exit (); |
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80 #define atexit on_exit |
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81 #endif |
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82 |
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1792
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83 // Don't redefine the variables if glibc already has. |
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84 #ifndef HAVE_PROGRAM_INVOCATION_NAME |
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85 char *program_invocation_name; |
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86 char *program_invocation_short_name; |
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87 #else |
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88 extern char *program_invocation_name; |
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89 extern char *program_invocation_short_name; |
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90 #endif |
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91 |
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1684
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92 // This is from readline's paren.c: |
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93 extern int rl_blink_matching_paren; |
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94 |
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1
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95 // Top level context (?) |
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96 jmp_buf toplevel; |
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97 |
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98 // Nonzero means we read ~/.octaverc and ./.octaverc. |
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616
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99 // (--norc; --ignore-init-file; -f) |
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100 static int read_init_files = 1; |
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101 |
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102 // Nonzero means we don't print the usual startup message. |
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103 // (--quiet; --silent; -q) |
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104 static int inhibit_startup_message = 0; |
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105 |
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106 // Nonzero means we turn on compatibility options. |
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107 // (--traditional) |
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108 static int traditional = 0; |
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109 |
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1825
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110 // If nonzero, print verbose info in some cases. |
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111 // (--verbose; -V) |
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112 static int verbose_flag = 0; |
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113 |
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114 // Usage message |
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115 static const char *usage_string = |
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116 "octave [-?Vdfhiqvx] [--debug] [--echo-commands] [--exec-path path]\n\ |
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117 [--help] [--ignore-init-file] [--info-file file] [--info-program prog]\n\ |
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118 [--interactive] [--no-line-editing] [-p path] [--path path] [--silent]\n\ |
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119 [--traditional] [--verbose] [--version] [file]"; |
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120 |
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121 // This is here so that it's more likely that the usage message and |
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122 // the real set of options will agree. Note: the `+' must come first |
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123 // to prevent getopt from permuting arguments! |
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124 static const char *short_opts = "+?Vdfhip:qvx"; |
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139
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125 |
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126 // Long options. See the comments in getopt.h for the meanings of the |
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127 // fields in this structure. |
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128 #define EXEC_PATH_OPTION 1 |
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129 #define INFO_FILE_OPTION 2 |
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130 #define INFO_PROG_OPTION 3 |
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131 #define NO_LINE_EDITING_OPTION 4 |
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132 #define TRADITIONAL_OPTION 5 |
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133 long_options long_opts[] = |
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139
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134 { |
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135 { "debug", no_argument, 0, 'd' }, |
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136 { "echo-commands", no_argument, 0, 'x' }, |
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137 { "exec-path", required_argument, 0, EXEC_PATH_OPTION }, |
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1103
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138 { "help", no_argument, 0, 'h' }, |
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139 { "ignore-init-file", no_argument, 0, 'f' }, |
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140 { "info-file", required_argument, 0, INFO_FILE_OPTION }, |
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141 { "info-program", required_argument, 0, INFO_PROG_OPTION }, |
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142 { "interactive", no_argument, 0, 'i' }, |
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143 { "no-line-editing", no_argument, 0, NO_LINE_EDITING_OPTION }, |
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144 { "norc", no_argument, 0, 'f' }, |
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145 { "path", required_argument, 0, 'p' }, |
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146 { "quiet", no_argument, 0, 'q' }, |
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147 { "silent", no_argument, 0, 'q' }, |
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148 { "traditional", no_argument, 0, TRADITIONAL_OPTION }, |
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1103
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149 { "verbose", no_argument, 0, 'V' }, |
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150 { "version", no_argument, 0, 'v' }, |
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151 { 0, 0, 0, 0 } |
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139
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152 }; |
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153 |
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154 // Store the command-line options for later use. |
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155 |
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156 static void |
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157 intern_argv (int argc, char **argv) |
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158 { |
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159 if (argc > 1) |
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160 { |
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161 int max_len = 0; |
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162 for (int i = 1; i < argc; i++) |
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163 { |
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164 int tmp_len = strlen (argv[i]); |
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165 if (tmp_len > max_len) |
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166 max_len = tmp_len; |
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167 } |
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168 |
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169 octave_argv.resize (argc-1, max_len, 0); |
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170 |
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171 for (int i = 1; i < argc; i++) |
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172 octave_argv.insert (argv[i], i-1, 0); |
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173 |
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174 bind_builtin_variable ("argv", octave_argv, 1, 1, 0); |
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175 } |
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176 } |
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177 |
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178 // Initialize some global variables for later use. |
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179 |
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180 static void |
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181 initialize_globals (const string& name) |
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182 { |
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183 // Kpathsea needs this. |
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184 |
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185 #ifndef HAVE_PROGRAM_INVOCATION_NAME |
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186 program_invocation_name = strsave (name.c_str ()); |
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187 program_invocation_short_name = strrchr (program_invocation_name, '/'); |
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188 if (! program_invocation_short_name) |
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189 program_invocation_short_name = program_invocation_name; |
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190 #endif |
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191 |
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192 raw_prog_name = name; |
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193 size_t pos = raw_prog_name.rfind ('/'); |
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194 if (pos == NPOS) |
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195 prog_name = raw_prog_name; |
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196 else |
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197 prog_name = raw_prog_name.substr (pos+1); |
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198 |
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199 struct passwd *entry = getpwuid (getuid ()); |
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200 if (entry) |
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201 user_name = entry->pw_name; |
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202 else |
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203 user_name = "I have no name!"; |
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204 endpwent (); |
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205 |
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206 char hostname[256]; |
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207 if (gethostname (hostname, 255) < 0) |
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208 host_name = "I have no host!"; |
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209 else |
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210 host_name = hostname; |
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211 |
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212 char *hd = getenv ("HOME"); |
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213 home_directory = hd ? hd : "I have no home!"; |
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214 |
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215 exec_path = default_exec_path (); |
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216 |
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217 load_path = default_path (); |
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186
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218 |
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219 info_file = default_info_file (); |
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195
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220 |
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221 info_prog = default_info_prog (); |
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222 |
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195
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223 editor = default_editor (); |
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224 } |
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225 |
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226 static void |
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227 initialize_pathsearch (void) |
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228 { |
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229 // This may seem odd, but doing it this way means that we don't have |
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230 // to modify the kpathsea library... |
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231 |
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232 char *odb = getenv ("OCTAVE_DB_DIR"); |
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233 |
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234 if (odb) |
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235 oct_putenv ("TEXMF", odb); |
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236 else |
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237 { |
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238 char *oh = getenv ("OCTAVE_HOME"); |
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239 |
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240 if (oh) |
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241 { |
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242 int len = strlen (oh) + 12; |
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243 char *putenv_val = new char [len]; |
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244 sprintf (putenv_val, "%s/lib/octave", oh); |
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245 oct_putenv ("TEXMF", putenv_val); |
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246 } |
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247 else |
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248 oct_putenv ("TEXMF", OCTAVE_DATADIR "/octave"); |
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249 } |
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250 } |
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251 |
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252 // Initialize by reading startup files. |
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253 |
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254 static void |
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255 execute_startup_files (void) |
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256 { |
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315
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257 begin_unwind_frame ("execute_startup_files"); |
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258 |
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259 // XXX FIXME XXX -- need to make it possible to set this in startup |
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260 // files. |
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261 |
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262 unwind_protect_int (input_from_startup_file); |
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263 unwind_protect_int (user_pref.echo_executing_commands); |
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264 |
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265 input_from_startup_file = 1; |
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266 user_pref.echo_executing_commands = ECHO_OFF; |
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315
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267 |
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268 int verbose = (verbose_flag && ! inhibit_startup_message); |
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269 |
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270 // Execute commands from the site-wide configuration file. First |
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271 // from the file $(prefix)/lib/octave/site/m/octaverc (if it exists), |
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272 // then from the file $(prefix)/lib/octave/$(version)/m/octaverc (if |
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273 // it exists). |
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274 |
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275 string lsd = get_local_site_defaults (); |
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276 parse_and_execute (lsd, 0, verbose); |
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277 |
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278 string sd = get_site_defaults (); |
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578
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279 parse_and_execute (sd, 0, verbose); |
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280 |
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281 // Try to execute commands from $HOME/.octaverc and ./.octaverc. |
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282 |
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283 int home_rc_already_executed = 0; |
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284 string home_rc; |
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285 if (! home_directory.empty ()) |
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286 { |
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287 home_rc = home_directory; |
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288 home_rc.append ("/.octaverc"); |
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289 parse_and_execute (home_rc, 0, verbose); |
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290 |
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291 // Names alone are not enough. |
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292 |
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293 file_stat fs_home_rc (home_rc); |
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294 |
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1766
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295 if (fs_home_rc) |
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296 { |
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297 file_stat fs_dot_rc ("./.octaverc"); |
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298 |
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299 if (fs_dot_rc && fs_home_rc.ino () == fs_dot_rc.ino ()) |
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300 home_rc_already_executed = 1; |
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301 } |
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1
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302 } |
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303 |
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1755
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304 if (! home_rc_already_executed) |
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578
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305 parse_and_execute ("./.octaverc", 0, verbose); |
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315
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306 |
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307 run_unwind_frame ("execute_startup_files"); |
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1
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308 } |
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309 |
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581
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310 // Usage message with extra help. |
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311 |
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1
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312 static void |
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313 verbose_usage (void) |
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314 { |
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1613
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315 cout << "\n" OCTAVE_NAME_VERSION_AND_COPYRIGHT "\n\ |
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316 \n\ |
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317 Usage: octave [options]\n\ |
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318 \n\ |
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319 Options:\n\ |
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1119
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320 \n\ |
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321 -d, --debug Enter parser debugging mode.\n\ |
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322 -x, --echo-commands Echo commands as they are executed.\n\ |
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323 --exec-path PATH Set path for executing subprograms.\n\ |
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324 -h, -?, --help Print short help message and exit.\n\ |
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325 -f, --ignore-init-file Don't read any initialization files.\n\ |
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326 --info-file FILE Use top-level info file FILE.\n\ |
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327 --info-program PROGRAM Use PROGRAM for reading info files.\n\ |
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328 -i, --interactive Force interactive behavior.\n\ |
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1821
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329 --no-line-editing Don't use readline for command-line editing\n\ |
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330 -p PATH, --path PATH Set initial LOADPATH to PATH.\n\ |
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331 -q, --silent Don't print message at startup.\n\ |
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332 --traditional Set compatibility variables.\n\ |
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333 -V, --verbose Enable verbose output in some cases.\n\ |
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334 -v, --version Print version number and exit.\n\ |
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1119
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335 \n\ |
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1613
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336 FILE Execute commands from FILE.\n\ |
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1119
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337 \n"; |
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285
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338 |
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613
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339 exit (0); |
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1
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340 } |
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341 |
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581
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342 // Terse usage messsage. |
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343 |
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1
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344 static void |
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345 usage (void) |
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346 { |
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613
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347 cerr << "usage: " << usage_string << "\n"; |
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1
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348 exit (1); |
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349 } |
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350 |
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351 static void |
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352 print_version_and_exit (void) |
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353 { |
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1107
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354 cout << OCTAVE_NAME_AND_VERSION << "\n"; |
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1
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355 exit (0); |
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356 } |
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357 |
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721
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358 static void |
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359 initialize_error_handlers () |
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360 { |
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361 set_liboctave_error_handler (error); |
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362 } |
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363 |
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1410
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364 // What happens on --traditional. |
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365 |
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366 static void |
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367 maximum_braindamage (void) |
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368 { |
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369 bind_builtin_variable ("PS1", ">> "); |
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370 bind_builtin_variable ("PS2", ""); |
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1423
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371 bind_builtin_variable ("beep_on_error", "true"); |
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1410
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372 bind_builtin_variable ("default_save_format", "mat-binary"); |
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373 bind_builtin_variable ("define_all_return_values", "true"); |
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374 bind_builtin_variable ("do_fortran_indexing", "true"); |
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375 bind_builtin_variable ("empty_list_elements_ok", "true"); |
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376 bind_builtin_variable ("implicit_str_to_num_ok", "true"); |
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377 bind_builtin_variable ("ok_to_lose_imaginary_part", "true"); |
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378 bind_builtin_variable ("page_screen_output", "false"); |
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379 bind_builtin_variable ("prefer_column_vectors", "false"); |
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380 bind_builtin_variable ("prefer_zero_one_indexing", "true"); |
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381 bind_builtin_variable ("print_empty_dimensions", "false"); |
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382 bind_builtin_variable ("treat_neg_dim_as_zero", "true"); |
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383 bind_builtin_variable ("warn_function_name_clash", "false"); |
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384 bind_builtin_variable ("whitespace_in_literal_matrix", "traditional"); |
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385 } |
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386 |
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581
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387 // You guessed it. |
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388 |
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1
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389 int |
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390 main (int argc, char **argv) |
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391 { |
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1588
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392 int echo_commands = ECHO_OFF; |
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393 |
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1358
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394 // The order of these calls is important, and initialize_globals |
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395 // must come before the options are processed because some command |
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396 // line options override defaults. |
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721
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397 |
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398 init_user_prefs (); |
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399 |
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400 initialize_pager (); |
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401 |
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1
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402 sysdep_init (); |
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403 |
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721
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404 initialize_error_handlers (); |
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223
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405 |
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1
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406 initialize_globals (argv[0]); |
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407 |
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1792
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408 initialize_pathsearch (); |
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1744
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409 |
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1817
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410 prog_args args (argc, argv, short_opts, long_opts); |
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411 |
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139
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412 int optc; |
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1817
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413 while ((optc = args.getopt ()) != EOF) |
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1
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414 { |
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139
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415 switch (optc) |
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1
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416 { |
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793
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417 case 'V': |
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418 verbose_flag++; |
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419 break; |
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420 |
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1
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421 case 'd': |
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422 yydebug++; |
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423 break; |
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777
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424 |
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1
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425 case 'f': |
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426 read_init_files = 0; |
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427 break; |
|
777
|
428 |
|
1
|
429 case 'h': |
|
|
430 case '?': |
|
|
431 verbose_usage (); |
|
|
432 break; |
|
777
|
433 |
|
1
|
434 case 'i': |
|
|
435 forced_interactive = 1; |
|
|
436 break; |
|
777
|
437 |
|
1
|
438 case 'p': |
|
1817
|
439 if (args.optarg ()) |
|
|
440 load_path = string (args.optarg ()); |
|
1
|
441 break; |
|
777
|
442 |
|
1
|
443 case 'q': |
|
|
444 inhibit_startup_message = 1; |
|
|
445 break; |
|
777
|
446 |
|
1
|
447 case 'x': |
|
1588
|
448 echo_commands = (ECHO_SCRIPTS | ECHO_FUNCTIONS | ECHO_CMD_LINE); |
|
1
|
449 break; |
|
777
|
450 |
|
1
|
451 case 'v': |
|
|
452 print_version_and_exit (); |
|
|
453 break; |
|
777
|
454 |
|
1613
|
455 case EXEC_PATH_OPTION: |
|
1817
|
456 if (args.optarg ()) |
|
|
457 exec_path = string (args.optarg ()); |
|
1613
|
458 break; |
|
|
459 |
|
186
|
460 case INFO_FILE_OPTION: |
|
1817
|
461 if (args.optarg ()) |
|
|
462 info_file = string (args.optarg ()); |
|
186
|
463 break; |
|
777
|
464 |
|
1613
|
465 case INFO_PROG_OPTION: |
|
1817
|
466 if (args.optarg ()) |
|
|
467 info_prog = string (args.optarg ()); |
|
1613
|
468 break; |
|
|
469 |
|
1821
|
470 case NO_LINE_EDITING_OPTION: |
|
|
471 using_readline = 0; |
|
|
472 break; |
|
|
473 |
|
1410
|
474 case TRADITIONAL_OPTION: |
|
|
475 traditional = 1; |
|
|
476 break; |
|
|
477 |
|
1
|
478 default: |
|
|
479 usage (); |
|
|
480 break; |
|
|
481 } |
|
|
482 } |
|
|
483 |
|
1651
|
484 #if defined (HAVE_ATEXIT) || defined (HAVE_ON_EXIT) |
|
1358
|
485 // Make sure we clean up when we exit. If we don't have atexit or |
|
|
486 // on_exit, we're going to leave some junk files around if we exit |
|
|
487 // abnormally. |
|
1
|
488 atexit (cleanup_tmp_files); |
|
318
|
489 #endif |
|
1
|
490 |
|
1358
|
491 // These can come after command line args since none of them set any |
|
|
492 // defaults that might be changed by command line options. |
|
581
|
493 |
|
636
|
494 install_signal_handlers (); |
|
|
495 |
|
1
|
496 initialize_file_io (); |
|
|
497 |
|
581
|
498 initialize_symbol_tables (); |
|
1
|
499 |
|
|
500 install_builtins (); |
|
|
501 |
|
315
|
502 initialize_readline (); |
|
|
503 |
|
721
|
504 init_dynamic_linker (); |
|
|
505 |
|
578
|
506 if (! inhibit_startup_message) |
|
1106
|
507 cout << OCTAVE_STARTUP_MESSAGE "\n" << endl; |
|
578
|
508 |
|
1410
|
509 if (traditional) |
|
|
510 maximum_braindamage (); |
|
|
511 |
|
1588
|
512 bind_builtin_variable ("echo_executing_commands", |
|
|
513 (double) echo_commands); |
|
|
514 |
|
1
|
515 if (read_init_files) |
|
1651
|
516 execute_startup_files (); |
|
|
517 |
|
1799
|
518 octave_command_history.read (); |
|
1
|
519 |
|
578
|
520 if (! inhibit_startup_message && reading_startup_message_printed) |
|
|
521 cout << endl; |
|
|
522 |
|
1358
|
523 // Avoid counting commands executed from startup files. |
|
|
524 |
|
1
|
525 current_command_number = 1; |
|
|
526 |
|
1358
|
527 // If there is an extra argument, see if it names a file to read. |
|
|
528 // Additional arguments are taken as command line options for the |
|
|
529 // script. |
|
1
|
530 |
|
1817
|
531 int last_arg_idx = args.optind (); |
|
|
532 int remaining_args = argc - last_arg_idx; |
|
1355
|
533 if (remaining_args > 0) |
|
149
|
534 { |
|
984
|
535 reading_script_file = 1; |
|
1817
|
536 curr_fcn_file_name = argv[last_arg_idx]; |
|
1608
|
537 curr_fcn_file_full_name = curr_fcn_file_name; |
|
1411
|
538 |
|
984
|
539 FILE *infile = get_input_from_file (curr_fcn_file_name); |
|
1411
|
540 |
|
529
|
541 if (infile) |
|
287
|
542 { |
|
1516
|
543 input_from_command_line_file = 1; |
|
|
544 |
|
1411
|
545 bind_builtin_variable ("program_invocation_name", |
|
|
546 curr_fcn_file_name); |
|
|
547 |
|
1755
|
548 size_t pos = curr_fcn_file_name.rfind ('/'); |
|
|
549 |
|
|
550 string tmp = (pos != NPOS) |
|
|
551 ? curr_fcn_file_name.substr (pos+1) : curr_fcn_file_name; |
|
1411
|
552 |
|
|
553 bind_builtin_variable ("program_name", tmp); |
|
|
554 |
|
1817
|
555 intern_argv (remaining_args, argv+last_arg_idx); |
|
1411
|
556 |
|
287
|
557 rl_blink_matching_paren = 0; |
|
|
558 switch_to_buffer (create_buffer (infile)); |
|
|
559 } |
|
529
|
560 else |
|
|
561 clean_up_and_exit (1); |
|
1
|
562 } |
|
|
563 else |
|
|
564 { |
|
1355
|
565 // Is input coming from a terminal? If so, we are probably |
|
|
566 // interactive. |
|
1
|
567 |
|
|
568 interactive = (isatty (fileno (stdin)) && isatty (fileno (stdout))); |
|
1355
|
569 |
|
|
570 intern_argv (argc, argv); |
|
|
571 |
|
|
572 switch_to_buffer (create_buffer (get_input_from_stdin ())); |
|
1
|
573 } |
|
|
574 |
|
1358
|
575 // Force input to be echoed if not really interactive, but the user |
|
|
576 // has forced interactive behavior. |
|
1
|
577 |
|
|
578 if (!interactive && forced_interactive) |
|
287
|
579 { |
|
|
580 rl_blink_matching_paren = 0; |
|
1588
|
581 |
|
|
582 // XXX FIXME XXX -- is this the right thing to do? |
|
|
583 |
|
|
584 bind_builtin_variable ("echo_executing_commands", |
|
|
585 (double) ECHO_CMD_LINE); |
|
287
|
586 } |
|
1
|
587 |
|
1410
|
588 if (! interactive) |
|
1
|
589 using_readline = 0; |
|
|
590 |
|
1358
|
591 // Allow the user to interrupt us without exiting. |
|
1
|
592 |
|
|
593 if (setjmp (toplevel) != 0) |
|
|
594 { |
|
|
595 raw_mode (0); |
|
176
|
596 |
|
1
|
597 cout << "\n"; |
|
|
598 } |
|
|
599 |
|
|
600 can_interrupt = 1; |
|
|
601 |
|
1651
|
602 catch_interrupts (); |
|
1
|
603 |
|
1358
|
604 // The big loop. |
|
1
|
605 |
|
|
606 int retval; |
|
|
607 do |
|
|
608 { |
|
287
|
609 curr_sym_tab = top_level_sym_tab; |
|
|
610 |
|
1
|
611 reset_parser (); |
|
287
|
612 |
|
1
|
613 retval = yyparse (); |
|
287
|
614 |
|
529
|
615 if (retval == 0 && global_command) |
|
1
|
616 { |
|
|
617 global_command->eval (1); |
|
|
618 delete global_command; |
|
|
619 current_command_number++; |
|
|
620 } |
|
|
621 } |
|
|
622 while (retval == 0); |
|
|
623 |
|
1005
|
624 if (retval == 1 && ! error_state) |
|
|
625 retval = 0; |
|
|
626 |
|
1
|
627 clean_up_and_exit (retval); |
|
|
628 } |
|
|
629 |
|
560
|
630 /* |
|
1
|
631 ;;; Local Variables: *** |
|
|
632 ;;; mode: C++ *** |
|
|
633 ;;; page-delimiter: "^/\\*" *** |
|
|
634 ;;; End: *** |
|
|
635 */ |
