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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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1009
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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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1
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46 #include <pwd.h> |
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636
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47 |
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139
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48 #include "getopt.h" |
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1
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49 |
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240
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50 #include "lo-error.h" |
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223
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51 |
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1355
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52 #include "builtins.h" |
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53 #include "defaults.h" |
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54 #include "defun.h" |
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703
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55 #include "dynamic-ld.h" |
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1355
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56 #include "error.h" |
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57 #include "file-io.h" |
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1766
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58 #include "file-ops.h" |
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1355
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59 #include "help.h" |
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1
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60 #include "input.h" |
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61 #include "lex.h" |
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1742
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62 #include "oct-hist.h" |
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1670
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63 #include "toplev.h" |
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1355
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64 #include "pager.h" |
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1
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65 #include "parse.h" |
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1355
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66 #include "pathsearch.h" |
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562
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67 #include "procstream.h" |
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1355
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68 #include "sighandlers.h" |
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69 #include "sysdep.h" |
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1742
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70 #include "pt-const.h" |
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71 #include "pt-misc.h" |
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72 #include "pt-plot.h" |
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1
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73 #include "unwind-prot.h" |
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1355
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74 #include "user-prefs.h" |
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75 #include "utils.h" |
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76 #include "variables.h" |
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1
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77 #include "version.h" |
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78 |
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1704
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79 #if !defined (HAVE_ATEXIT) && defined (HAVE_ON_EXIT) |
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80 extern "C" int on_exit (); |
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81 #define atexit on_exit |
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82 #endif |
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83 |
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1684
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84 // This is from readline's paren.c: |
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85 extern int rl_blink_matching_paren; |
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1516
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86 |
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1
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87 // Top level context (?) |
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88 jmp_buf toplevel; |
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89 |
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90 // Nonzero means we read ~/.octaverc and ./.octaverc. |
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616
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91 // (--norc; --ignore-init-file; -f) |
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1
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92 static int read_init_files = 1; |
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93 |
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1358
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94 // Nonzero means we don't print the usual startup message. |
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616
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95 // (--quiet; --silent; -q) |
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96 static int inhibit_startup_message = 0; |
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97 |
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98 // Nonzero means we turn on compatibility options. |
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99 // (--traditional) |
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100 static int traditional = 0; |
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101 |
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1
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102 // Usage message |
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139
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103 static const char *usage_string = |
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1613
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104 "octave [-?Vdfhiqvx] [--debug] [--echo-commands] [--exec-path path]\n\ |
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105 [--help] [--ignore-init-file] [--info-file file] [--info-program prog]\n\ |
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106 [--interactive] [-p path] [--path path] [--silent] [--traditional]\n\ |
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107 [--verbose] [--version] [file]"; |
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108 |
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109 // This is here so that it's more likely that the usage message and |
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110 // the real set of options will agree. Note: the `+' must come first |
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111 // to prevent getopt from permuting arguments! |
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112 static const char *short_opts = "+?Vdfhip:qvx"; |
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113 |
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1103
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114 // Long options. See the comments in getopt.h for the meanings of the |
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115 // fields in this structure. |
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116 #define EXEC_PATH_OPTION 1 |
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117 #define INFO_FILE_OPTION 2 |
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118 #define INFO_PROG_OPTION 3 |
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119 #define TRADITIONAL_OPTION 4 |
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139
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120 static struct option long_opts[] = |
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121 { |
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122 { "debug", no_argument, 0, 'd' }, |
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123 { "echo-commands", no_argument, 0, 'x' }, |
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124 { "exec-path", required_argument, 0, EXEC_PATH_OPTION }, |
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1103
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125 { "help", no_argument, 0, 'h' }, |
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126 { "interactive", no_argument, 0, 'i' }, |
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127 { "info-file", required_argument, 0, INFO_FILE_OPTION }, |
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1613
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128 { "info-program", required_argument, 0, INFO_PROG_OPTION }, |
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129 { "ignore-init-file", no_argument, 0, 'f' }, |
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1103
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130 { "norc", no_argument, 0, 'f' }, |
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131 { "path", required_argument, 0, 'p' }, |
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132 { "quiet", no_argument, 0, 'q' }, |
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133 { "silent", no_argument, 0, 'q' }, |
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134 { "traditional", no_argument, 0, TRADITIONAL_OPTION }, |
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135 { "verbose", no_argument, 0, 'V' }, |
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136 { "version", no_argument, 0, 'v' }, |
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137 { 0, 0, 0, 0 } |
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139
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138 }; |
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1
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139 |
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1355
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140 // Store the command-line options for later use. |
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141 |
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142 static void |
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143 intern_argv (int argc, char **argv) |
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144 { |
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145 if (argc > 1) |
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146 { |
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147 int max_len = 0; |
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148 for (int i = 1; i < argc; i++) |
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1572
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149 { |
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150 int tmp_len = strlen (argv[i]); |
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151 if (tmp_len > max_len) |
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152 max_len = tmp_len; |
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153 } |
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154 |
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155 octave_argv.resize (argc-1, max_len, 0); |
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156 |
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157 for (int i = 1; i < argc; i++) |
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158 octave_argv.insert (argv[i], i-1, 0); |
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159 |
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160 bind_builtin_variable ("argv", octave_argv, 1, 1, 0); |
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161 } |
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162 } |
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163 |
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164 // Initialize some global variables for later use. |
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165 |
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166 static void |
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167 initialize_globals (const string& name) |
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168 { |
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169 raw_prog_name = name; |
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170 size_t pos = raw_prog_name.rfind ('/'); |
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171 if (pos == NPOS) |
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172 prog_name = raw_prog_name; |
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173 else |
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174 prog_name = raw_prog_name.substr (pos+1); |
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175 |
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176 struct passwd *entry = getpwuid (getuid ()); |
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177 if (entry) |
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178 user_name = entry->pw_name; |
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1
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179 else |
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180 user_name = "I have no name!"; |
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181 endpwent (); |
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182 |
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183 char hostname[256]; |
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184 if (gethostname (hostname, 255) < 0) |
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185 host_name = "I have no host!"; |
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186 else |
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187 host_name = hostname; |
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188 |
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189 char *hd = getenv ("HOME"); |
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190 home_directory = hd ? hd : "I have no home!"; |
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191 |
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192 exec_path = default_exec_path (); |
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193 |
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194 load_path = default_path (); |
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186
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195 |
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196 info_file = default_info_file (); |
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195
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197 |
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198 info_prog = default_info_prog (); |
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199 |
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195
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200 editor = default_editor (); |
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201 } |
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202 |
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203 // Initialize by reading startup files. |
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204 |
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205 static void |
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206 execute_startup_files (void) |
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207 { |
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315
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208 begin_unwind_frame ("execute_startup_files"); |
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209 |
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210 // XXX FIXME XXX -- need to make it possible to set this in startup |
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211 // files. |
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212 |
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213 unwind_protect_int (input_from_startup_file); |
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214 unwind_protect_int (user_pref.echo_executing_commands); |
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215 |
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216 input_from_startup_file = 1; |
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217 user_pref.echo_executing_commands = ECHO_OFF; |
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315
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218 |
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219 int verbose = (verbose_flag && ! inhibit_startup_message); |
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220 |
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221 // Execute commands from the site-wide configuration file. First |
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222 // from the file $(prefix)/lib/octave/site/m/octaverc (if it exists), |
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223 // then from the file $(prefix)/lib/octave/$(version)/m/octaverc (if |
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224 // it exists). |
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225 |
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226 string lsd = get_local_site_defaults (); |
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227 parse_and_execute (lsd, 0, verbose); |
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228 |
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229 string sd = get_site_defaults (); |
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230 parse_and_execute (sd, 0, verbose); |
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231 |
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232 // Try to execute commands from $HOME/.octaverc and ./.octaverc. |
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233 |
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234 int home_rc_already_executed = 0; |
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235 string home_rc; |
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236 if (! home_directory.empty ()) |
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1
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237 { |
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238 home_rc = home_directory; |
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239 home_rc.append ("/.octaverc"); |
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578
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240 parse_and_execute (home_rc, 0, verbose); |
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241 |
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242 // Names alone are not enough. |
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243 |
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244 file_stat fs_home_rc (home_rc); |
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245 |
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246 if (fs_home_rc) |
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247 { |
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248 file_stat fs_dot_rc ("./.octaverc"); |
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249 |
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250 if (fs_dot_rc && fs_home_rc.ino () == fs_dot_rc.ino ()) |
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251 home_rc_already_executed = 1; |
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252 } |
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1
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253 } |
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254 |
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1755
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255 if (! home_rc_already_executed) |
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578
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256 parse_and_execute ("./.octaverc", 0, verbose); |
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315
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257 |
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258 run_unwind_frame ("execute_startup_files"); |
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1
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259 } |
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260 |
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581
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261 // Usage message with extra help. |
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262 |
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1
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263 static void |
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264 verbose_usage (void) |
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265 { |
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266 cout << "\n" OCTAVE_NAME_VERSION_AND_COPYRIGHT "\n\ |
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267 \n\ |
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268 Usage: octave [options]\n\ |
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269 \n\ |
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270 Options:\n\ |
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1119
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271 \n\ |
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272 -d, --debug Enter parser debugging mode.\n\ |
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273 -x, --echo-commands Echo commands as they are executed.\n\ |
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274 --exec-path PATH Set path for executing subprograms.\n\ |
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275 -h, -?, --help Print short help message and exit.\n\ |
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276 -f, --ignore-init-file Don't read any initialization files.\n\ |
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277 --info-file FILE Use top-level info file FILE.\n\ |
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278 --info-program PROGRAM Use PROGRAM for reading info files.\n\ |
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279 -i, --interactive Force interactive behavior.\n\ |
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280 -p PATH, --path PATH Set initial LOADPATH to PATH.\n\ |
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281 -q, --silent Don't print message at startup.\n\ |
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282 --traditional Set compatibility variables.\n\ |
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283 -V, --verbose Enable verbose output in some cases.\n\ |
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284 -v, --version Print version number and exit.\n\ |
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1119
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285 \n\ |
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1613
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286 FILE Execute commands from FILE.\n\ |
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1119
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287 \n"; |
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285
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288 |
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613
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289 exit (0); |
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1
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290 } |
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291 |
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581
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292 // Terse usage messsage. |
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293 |
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1
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294 static void |
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295 usage (void) |
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296 { |
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613
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297 cerr << "usage: " << usage_string << "\n"; |
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1
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298 exit (1); |
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299 } |
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300 |
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301 static void |
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302 print_version_and_exit (void) |
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303 { |
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1107
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304 cout << OCTAVE_NAME_AND_VERSION << "\n"; |
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1
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305 exit (0); |
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306 } |
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307 |
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721
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308 static void |
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309 initialize_error_handlers () |
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310 { |
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311 set_liboctave_error_handler (error); |
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312 } |
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313 |
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1410
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314 // What happens on --traditional. |
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315 |
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316 static void |
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317 maximum_braindamage (void) |
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318 { |
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319 bind_builtin_variable ("PS1", ">> "); |
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320 bind_builtin_variable ("PS2", ""); |
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1423
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321 bind_builtin_variable ("beep_on_error", "true"); |
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1410
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322 bind_builtin_variable ("default_save_format", "mat-binary"); |
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323 bind_builtin_variable ("define_all_return_values", "true"); |
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324 bind_builtin_variable ("do_fortran_indexing", "true"); |
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325 bind_builtin_variable ("empty_list_elements_ok", "true"); |
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326 bind_builtin_variable ("implicit_str_to_num_ok", "true"); |
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327 bind_builtin_variable ("ok_to_lose_imaginary_part", "true"); |
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328 bind_builtin_variable ("page_screen_output", "false"); |
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329 bind_builtin_variable ("prefer_column_vectors", "false"); |
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330 bind_builtin_variable ("prefer_zero_one_indexing", "true"); |
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331 bind_builtin_variable ("print_empty_dimensions", "false"); |
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332 bind_builtin_variable ("treat_neg_dim_as_zero", "true"); |
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333 bind_builtin_variable ("warn_function_name_clash", "false"); |
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334 bind_builtin_variable ("whitespace_in_literal_matrix", "traditional"); |
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335 } |
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336 |
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581
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337 // You guessed it. |
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338 |
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1
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339 int |
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340 main (int argc, char **argv) |
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341 { |
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1588
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342 int echo_commands = ECHO_OFF; |
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343 |
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1358
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344 // The order of these calls is important, and initialize_globals |
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345 // must come before the options are processed because some command |
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346 // line options override defaults. |
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721
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347 |
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348 init_user_prefs (); |
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349 |
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350 initialize_pager (); |
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351 |
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1
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352 sysdep_init (); |
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353 |
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721
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354 initialize_error_handlers (); |
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223
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355 |
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1
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356 initialize_globals (argv[0]); |
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357 |
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1744
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358 initialize_pathsearch (argv[0]); |
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359 |
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139
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360 int optc; |
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361 while ((optc = getopt_long (argc, argv, short_opts, long_opts, 0)) != EOF) |
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1
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362 { |
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139
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363 switch (optc) |
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1
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364 { |
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793
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365 case 'V': |
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366 verbose_flag++; |
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367 break; |
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368 |
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1
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369 case 'd': |
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370 yydebug++; |
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371 break; |
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777
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372 |
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1
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373 case 'f': |
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374 read_init_files = 0; |
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375 break; |
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777
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376 |
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1
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377 case 'h': |
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378 case '?': |
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379 verbose_usage (); |
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380 break; |
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777
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381 |
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1
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382 case 'i': |
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383 forced_interactive = 1; |
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384 break; |
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777
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385 |
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1
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386 case 'p': |
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529
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387 if (optarg) |
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1755
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388 load_path = string (optarg); |
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1
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389 break; |
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777
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390 |
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1
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391 case 'q': |
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392 inhibit_startup_message = 1; |
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393 break; |
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777
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394 |
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1
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395 case 'x': |
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1588
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396 echo_commands = (ECHO_SCRIPTS | ECHO_FUNCTIONS | ECHO_CMD_LINE); |
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1
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397 break; |
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777
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398 |
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1
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399 case 'v': |
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400 print_version_and_exit (); |
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401 break; |
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777
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402 |
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1613
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403 case EXEC_PATH_OPTION: |
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404 if (optarg) |
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1755
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405 exec_path = string (optarg); |
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1613
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406 break; |
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407 |
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186
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408 case INFO_FILE_OPTION: |
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529
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409 if (optarg) |
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1755
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410 info_file = string (optarg); |
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186
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411 break; |
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777
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412 |
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1613
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413 case INFO_PROG_OPTION: |
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414 if (optarg) |
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1755
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415 info_prog = string (optarg); |
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1613
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416 break; |
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417 |
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1410
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418 case TRADITIONAL_OPTION: |
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419 traditional = 1; |
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420 break; |
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421 |
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1
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422 default: |
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423 usage (); |
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424 break; |
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425 } |
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426 } |
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427 |
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1651
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428 #if defined (HAVE_ATEXIT) || defined (HAVE_ON_EXIT) |
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1358
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429 // Make sure we clean up when we exit. If we don't have atexit or |
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430 // on_exit, we're going to leave some junk files around if we exit |
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431 // abnormally. |
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1
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432 atexit (cleanup_tmp_files); |
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318
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433 #endif |
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1
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434 |
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1358
|
435 // These can come after command line args since none of them set any |
|
|
436 // defaults that might be changed by command line options. |
|
581
|
437 |
|
636
|
438 install_signal_handlers (); |
|
|
439 |
|
1
|
440 initialize_file_io (); |
|
|
441 |
|
581
|
442 initialize_symbol_tables (); |
|
1
|
443 |
|
|
444 install_builtins (); |
|
|
445 |
|
315
|
446 initialize_readline (); |
|
|
447 |
|
721
|
448 init_dynamic_linker (); |
|
|
449 |
|
578
|
450 if (! inhibit_startup_message) |
|
1106
|
451 cout << OCTAVE_STARTUP_MESSAGE "\n" << endl; |
|
578
|
452 |
|
1410
|
453 if (traditional) |
|
|
454 maximum_braindamage (); |
|
|
455 |
|
1588
|
456 bind_builtin_variable ("echo_executing_commands", |
|
|
457 (double) echo_commands); |
|
|
458 |
|
1
|
459 if (read_init_files) |
|
1651
|
460 execute_startup_files (); |
|
|
461 |
|
|
462 initialize_history (); |
|
1
|
463 |
|
578
|
464 if (! inhibit_startup_message && reading_startup_message_printed) |
|
|
465 cout << endl; |
|
|
466 |
|
1358
|
467 // Avoid counting commands executed from startup files. |
|
|
468 |
|
1
|
469 current_command_number = 1; |
|
|
470 |
|
1358
|
471 // If there is an extra argument, see if it names a file to read. |
|
|
472 // Additional arguments are taken as command line options for the |
|
|
473 // script. |
|
1
|
474 |
|
149
|
475 int remaining_args = argc - optind; |
|
1355
|
476 if (remaining_args > 0) |
|
149
|
477 { |
|
984
|
478 reading_script_file = 1; |
|
|
479 curr_fcn_file_name = argv[optind]; |
|
1608
|
480 curr_fcn_file_full_name = curr_fcn_file_name; |
|
1411
|
481 |
|
984
|
482 FILE *infile = get_input_from_file (curr_fcn_file_name); |
|
1411
|
483 |
|
529
|
484 if (infile) |
|
287
|
485 { |
|
1516
|
486 input_from_command_line_file = 1; |
|
|
487 |
|
1411
|
488 bind_builtin_variable ("program_invocation_name", |
|
|
489 curr_fcn_file_name); |
|
|
490 |
|
1755
|
491 size_t pos = curr_fcn_file_name.rfind ('/'); |
|
|
492 |
|
|
493 string tmp = (pos != NPOS) |
|
|
494 ? curr_fcn_file_name.substr (pos+1) : curr_fcn_file_name; |
|
1411
|
495 |
|
|
496 bind_builtin_variable ("program_name", tmp); |
|
|
497 |
|
|
498 intern_argv (remaining_args, argv+optind); |
|
|
499 |
|
287
|
500 rl_blink_matching_paren = 0; |
|
|
501 switch_to_buffer (create_buffer (infile)); |
|
|
502 } |
|
529
|
503 else |
|
|
504 clean_up_and_exit (1); |
|
1
|
505 } |
|
|
506 else |
|
|
507 { |
|
1355
|
508 // Is input coming from a terminal? If so, we are probably |
|
|
509 // interactive. |
|
1
|
510 |
|
|
511 interactive = (isatty (fileno (stdin)) && isatty (fileno (stdout))); |
|
1355
|
512 |
|
|
513 intern_argv (argc, argv); |
|
|
514 |
|
|
515 switch_to_buffer (create_buffer (get_input_from_stdin ())); |
|
1
|
516 } |
|
|
517 |
|
1358
|
518 // Force input to be echoed if not really interactive, but the user |
|
|
519 // has forced interactive behavior. |
|
1
|
520 |
|
|
521 if (!interactive && forced_interactive) |
|
287
|
522 { |
|
|
523 rl_blink_matching_paren = 0; |
|
1588
|
524 |
|
|
525 // XXX FIXME XXX -- is this the right thing to do? |
|
|
526 |
|
|
527 bind_builtin_variable ("echo_executing_commands", |
|
|
528 (double) ECHO_CMD_LINE); |
|
287
|
529 } |
|
1
|
530 |
|
1410
|
531 if (! interactive) |
|
1
|
532 using_readline = 0; |
|
|
533 |
|
1358
|
534 // Allow the user to interrupt us without exiting. |
|
1
|
535 |
|
|
536 if (setjmp (toplevel) != 0) |
|
|
537 { |
|
|
538 raw_mode (0); |
|
176
|
539 |
|
1
|
540 cout << "\n"; |
|
|
541 } |
|
|
542 |
|
|
543 can_interrupt = 1; |
|
|
544 |
|
1651
|
545 catch_interrupts (); |
|
1
|
546 |
|
1358
|
547 // The big loop. |
|
1
|
548 |
|
|
549 int retval; |
|
|
550 do |
|
|
551 { |
|
287
|
552 curr_sym_tab = top_level_sym_tab; |
|
|
553 |
|
1
|
554 reset_parser (); |
|
287
|
555 |
|
1
|
556 retval = yyparse (); |
|
287
|
557 |
|
529
|
558 if (retval == 0 && global_command) |
|
1
|
559 { |
|
|
560 global_command->eval (1); |
|
|
561 delete global_command; |
|
|
562 current_command_number++; |
|
|
563 } |
|
|
564 } |
|
|
565 while (retval == 0); |
|
|
566 |
|
1005
|
567 if (retval == 1 && ! error_state) |
|
|
568 retval = 0; |
|
|
569 |
|
1
|
570 clean_up_and_exit (retval); |
|
|
571 } |
|
|
572 |
|
560
|
573 /* |
|
1
|
574 ;;; Local Variables: *** |
|
|
575 ;;; mode: C++ *** |
|
|
576 ;;; page-delimiter: "^/\\*" *** |
|
|
577 ;;; End: *** |
|
|
578 */ |
