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1 /* |
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2 |
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2847
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3 Copyright (C) 1996, 1997 John W. Eaton |
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4 |
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5 This file is part of Octave. |
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6 |
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7 Octave is free software; you can redistribute it and/or modify it |
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8 under the terms of the GNU General Public License as published by the |
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9 Free Software Foundation; either version 2, or (at your option) any |
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10 later version. |
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11 |
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12 Octave is distributed in the hope that it will be useful, but WITHOUT |
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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15 for more details. |
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16 |
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17 You should have received a copy of the GNU General Public License |
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18 along with Octave; see the file COPYING. If not, write to the Free |
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19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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20 |
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21 */ |
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22 |
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23 #ifdef HAVE_CONFIG_H |
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24 #include <config.h> |
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25 #endif |
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26 |
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27 #include <cstdlib> |
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28 |
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29 #include <iostream> |
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30 #include <string> |
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31 |
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32 #ifdef HAVE_UNISTD_H |
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2442
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33 #ifdef HAVE_SYS_TYPES_H |
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34 #include <sys/types.h> |
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2442
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35 #endif |
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36 #include <unistd.h> |
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37 #endif |
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38 |
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2926
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39 #include "oct-env.h" |
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4217
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40 #include "file-stat.h" |
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3174
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41 #include "pathsearch.h" |
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4217
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42 #include "str-vec.h" |
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43 |
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2492
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44 #include <defaults.h> |
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45 #include "defun.h" |
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46 #include "error.h" |
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3040
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47 #include "file-ops.h" |
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48 #include "gripes.h" |
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49 #include "help.h" |
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3185
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50 #include "oct-obj.h" |
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2390
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51 #include "ov.h" |
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4217
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52 #include "parse.h" |
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53 #include "toplev.h" |
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4217
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54 #include "unwind-prot.h" |
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55 #include "variables.h" |
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2492
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56 #include <version.h> |
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57 |
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58 std::string Voctave_home; |
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59 |
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60 std::string Vbin_dir; |
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61 std::string Vinfo_dir; |
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62 std::string Vdata_dir; |
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63 std::string Vlibexec_dir; |
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64 std::string Varch_lib_dir; |
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65 std::string Vlocal_arch_lib_dir; |
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66 std::string Vlocal_ver_arch_lib_dir; |
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67 std::string Vfcn_file_dir; |
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68 |
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69 // The path that will be searched for programs that we execute. |
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70 // (--exec-path path) |
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71 std::string Vexec_path; |
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72 |
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73 // Load path specified on command line. |
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74 // (--path path; -p path) |
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75 static std::string Vload_path; |
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76 |
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77 // The default load path with OCTAVE_HOME appropriately substituted. |
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78 static std::string Vdefault_load_path; |
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79 |
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3174
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80 // And the cached directory path corresponding to Vload_path. |
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81 dir_path Vload_path_dir_path; |
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82 |
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83 // Name of the editor to be invoked by the edit_history command. |
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84 std::string Veditor; |
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85 |
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86 std::string Vimagepath; |
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87 |
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88 std::string Vlocal_site_defaults_file; |
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89 std::string Vsite_defaults_file; |
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90 |
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91 // Each element of A and B should be directory names. For each |
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92 // element of A not in the list B, execute SCRIPT_FILE in that |
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93 // directory if it exists. |
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94 |
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95 static void |
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96 maybe_add_or_del_packages (const string_vector& a, |
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97 const string_vector& b, |
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98 const std::string script_file) |
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99 { |
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100 if (! octave_interpreter_ready) |
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101 return; |
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102 |
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103 unwind_protect::begin_frame ("maybe_add_or_del_packages"); |
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104 |
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105 unwind_protect_bool (input_from_startup_file); |
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106 |
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107 input_from_startup_file = true; |
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108 |
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109 int a_len = a.length (); |
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110 int b_len = b.length (); |
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111 |
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112 for (int i = 0; i < a_len; i++) |
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113 { |
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114 std::string a_dir = a[i]; |
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115 |
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116 bool found = false; |
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117 |
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118 for (int j = 0; j < b_len; j++) |
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119 { |
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120 if (b[j] == a_dir) |
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121 { |
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122 found = true; |
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123 break; |
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124 } |
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125 } |
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126 |
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127 if (! found) |
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128 { |
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129 std::string file = a_dir + file_ops::dir_sep_str + script_file; |
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130 |
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131 file_stat fs = file_stat (file); |
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132 |
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133 if (fs.exists ()) |
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134 parse_and_execute (file); |
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135 |
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136 if (error_state) |
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137 return; |
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138 } |
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139 } |
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140 |
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141 unwind_protect::run_frame ("maybe_add_or_del_packages"); |
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142 } |
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143 |
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144 static void |
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145 update_load_path_dir_path (void) |
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146 { |
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147 string_vector old_dirs = Vload_path_dir_path.all_directories (); |
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148 |
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149 Vload_path_dir_path = dir_path (Vload_path, Vdefault_load_path); |
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150 |
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151 string_vector new_dirs = Vload_path_dir_path.all_directories (); |
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152 |
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153 maybe_add_or_del_packages (old_dirs, new_dirs, "PKG_DEL"); |
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154 |
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155 if (! error_state) |
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156 maybe_add_or_del_packages (new_dirs, old_dirs, "PKG_ADD"); |
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157 } |
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158 |
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159 void |
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160 execute_default_pkg_add_files (void) |
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161 { |
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162 string_vector old_dirs; |
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163 string_vector new_dirs = Vload_path_dir_path.all_directories (); |
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164 |
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165 maybe_add_or_del_packages (new_dirs, old_dirs, "PKG_ADD"); |
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166 } |
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167 |
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3535
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168 static std::string |
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169 subst_octave_home (const std::string& s) |
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170 { |
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171 std::string retval; |
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172 |
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173 std::string prefix = OCTAVE_PREFIX; |
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174 |
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175 retval = s; |
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176 |
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177 if (Voctave_home != prefix) |
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178 { |
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179 int len = prefix.length (); |
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180 size_t start = 0; |
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181 while ((start = retval.find (prefix, start)) != NPOS) |
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182 { |
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183 retval.replace (start, len, Voctave_home); |
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184 start += len; |
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185 } |
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186 } |
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187 |
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188 return retval; |
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189 } |
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190 |
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191 static void |
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192 set_octave_home (void) |
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193 { |
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194 std::string oh = octave_env::getenv ("OCTAVE_HOME"); |
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195 |
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196 Voctave_home = oh.empty () ? std::string (OCTAVE_PREFIX) : oh; |
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197 } |
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198 |
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199 static void |
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200 set_default_info_dir (void) |
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201 { |
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202 Vinfo_dir = subst_octave_home (OCTAVE_INFODIR); |
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203 } |
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204 |
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205 static void |
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206 set_default_data_dir (void) |
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207 { |
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208 Vdata_dir = subst_octave_home (OCTAVE_DATADIR); |
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209 } |
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210 |
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211 static void |
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212 set_default_libexec_dir (void) |
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213 { |
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214 Vlibexec_dir = subst_octave_home (OCTAVE_LIBEXECDIR); |
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215 } |
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216 |
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217 static void |
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218 set_default_arch_lib_dir (void) |
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219 { |
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220 Varch_lib_dir = subst_octave_home (OCTAVE_ARCHLIBDIR); |
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221 } |
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222 |
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223 static void |
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224 set_default_local_arch_lib_dir (void) |
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225 { |
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226 Vlocal_arch_lib_dir = subst_octave_home (OCTAVE_LOCALARCHLIBDIR); |
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227 } |
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228 |
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229 static void |
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230 set_default_local_ver_arch_lib_dir (void) |
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231 { |
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232 Vlocal_ver_arch_lib_dir = subst_octave_home (OCTAVE_LOCALVERARCHLIBDIR); |
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233 } |
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234 |
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235 static void |
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236 set_default_fcn_file_dir (void) |
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237 { |
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238 Vfcn_file_dir = subst_octave_home (OCTAVE_FCNFILEDIR); |
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239 } |
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240 |
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241 static void |
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242 set_default_bin_dir (void) |
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243 { |
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244 Vbin_dir = subst_octave_home (OCTAVE_BINDIR); |
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245 } |
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246 |
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247 static void |
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248 set_default_exec_path (void) |
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249 { |
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250 std::string octave_exec_path = octave_env::getenv ("OCTAVE_EXEC_PATH"); |
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251 |
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252 if (octave_exec_path.empty ()) |
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253 { |
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254 std::string shell_path = octave_env::getenv ("PATH"); |
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255 |
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256 if (! shell_path.empty ()) |
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257 { |
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258 Vexec_path = std::string (":"); |
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259 Vexec_path.append (shell_path); |
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260 } |
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261 } |
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262 else |
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263 Vexec_path = std::string (octave_exec_path); |
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264 } |
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265 |
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266 static void |
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267 set_default_path (void) |
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268 { |
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269 Vdefault_load_path = subst_octave_home (OCTAVE_FCNFILEPATH); |
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270 |
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271 std::string oct_path = octave_env::getenv ("OCTAVE_PATH"); |
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272 |
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273 Vload_path = oct_path.empty () ? std::string (":") : oct_path; |
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274 |
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275 update_load_path_dir_path (); |
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276 } |
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277 |
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278 static void |
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279 set_default_info_file (void) |
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280 { |
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281 std::string std_info_file = subst_octave_home (OCTAVE_INFOFILE); |
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282 |
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283 std::string oct_info_file = octave_env::getenv ("OCTAVE_INFO_FILE"); |
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284 |
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285 Vinfo_file = oct_info_file.empty () ? std_info_file : oct_info_file; |
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286 } |
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287 |
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288 static void |
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289 set_default_info_prog (void) |
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290 { |
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291 std::string oct_info_prog = octave_env::getenv ("OCTAVE_INFO_PROGRAM"); |
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292 |
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293 if (oct_info_prog.empty ()) |
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294 Vinfo_prog = "info"; |
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295 else |
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296 Vinfo_prog = std::string (oct_info_prog); |
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297 } |
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298 |
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299 static void |
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300 set_default_editor (void) |
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301 { |
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302 Veditor = "emacs"; |
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303 |
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304 std::string env_editor = octave_env::getenv ("EDITOR"); |
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305 |
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306 if (! env_editor.empty ()) |
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307 Veditor = env_editor; |
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308 } |
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309 |
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310 static void |
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311 set_local_site_defaults_file (void) |
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312 { |
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313 Vlocal_site_defaults_file = subst_octave_home (OCTAVE_LOCALSTARTUPFILEDIR); |
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314 Vlocal_site_defaults_file.append ("/octaverc"); |
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315 } |
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316 |
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317 static void |
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318 set_site_defaults_file (void) |
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319 { |
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320 Vsite_defaults_file = subst_octave_home (OCTAVE_STARTUPFILEDIR); |
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321 Vsite_defaults_file.append ("/octaverc"); |
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322 } |
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323 |
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3534
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324 std::string |
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325 maybe_add_default_load_path (const std::string& pathstring) |
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326 { |
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327 std::string retval; |
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328 |
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329 if (! pathstring.empty ()) |
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330 { |
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331 if (pathstring[0] == SEPCHAR) |
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332 { |
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333 retval = Vdefault_load_path; |
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334 retval.append (pathstring); |
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335 } |
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336 else |
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337 retval = pathstring; |
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338 |
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339 if (pathstring[pathstring.length () - 1] == SEPCHAR) |
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340 retval.append (Vdefault_load_path); |
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341 |
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342 size_t pos = 0; |
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343 do |
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344 { |
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345 pos = retval.find ("::"); |
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346 |
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347 if (pos != NPOS) |
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348 retval.insert (pos+1, Vdefault_load_path); |
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349 } |
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350 while (pos != NPOS); |
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351 } |
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352 |
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353 return retval; |
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354 } |
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355 |
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356 void |
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357 install_defaults (void) |
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358 { |
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359 // OCTAVE_HOME must be set first! |
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360 |
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361 set_octave_home (); |
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362 |
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363 set_default_info_dir (); |
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364 |
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3141
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365 set_default_data_dir (); |
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366 |
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367 set_default_libexec_dir (); |
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368 |
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369 set_default_arch_lib_dir (); |
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370 |
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371 set_default_local_arch_lib_dir (); |
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372 |
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3597
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373 set_default_local_ver_arch_lib_dir (); |
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374 |
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2203
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375 set_default_fcn_file_dir (); |
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376 |
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377 set_default_bin_dir (); |
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378 |
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379 set_default_exec_path (); |
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380 |
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381 set_default_path (); |
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382 |
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383 set_default_info_file (); |
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384 |
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385 set_default_info_prog (); |
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386 |
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387 set_default_editor (); |
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388 |
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389 set_local_site_defaults_file (); |
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390 |
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391 set_site_defaults_file (); |
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392 } |
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393 |
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394 static int |
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395 editor (void) |
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396 { |
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397 int status = 0; |
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398 |
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3523
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399 std::string s = builtin_string_variable ("EDITOR"); |
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2203
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400 |
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401 if (s.empty ()) |
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402 { |
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403 gripe_invalid_value_specified ("EDITOR"); |
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404 status = -1; |
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405 } |
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406 else |
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407 Veditor = s; |
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408 |
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409 return status; |
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410 } |
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411 |
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412 static int |
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413 exec_path (void) |
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414 { |
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415 int status = 0; |
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416 |
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3523
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417 std::string s = builtin_string_variable ("EXEC_PATH"); |
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2439
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418 |
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419 if (s.empty ()) |
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2203
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420 { |
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421 gripe_invalid_value_specified ("EXEC_PATH"); |
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422 status = -1; |
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423 } |
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424 else |
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425 { |
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2439
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426 Vexec_path = s; |
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427 |
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3597
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428 std::string std_path |
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429 = Vlocal_ver_arch_lib_dir + std::string (SEPCHAR_STR) |
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430 + Vlocal_arch_lib_dir + std::string (SEPCHAR_STR) |
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431 + Varch_lib_dir + std::string (SEPCHAR_STR) |
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432 + Vbin_dir; |
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2439
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433 |
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3523
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434 std::string path; |
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2203
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435 |
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436 int eplen = Vexec_path.length (); |
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437 |
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438 if (eplen > 0) |
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439 { |
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2926
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440 bool prepend = (Vexec_path[0] == ':'); |
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441 bool append = (eplen > 1 && Vexec_path[eplen-1] == ':'); |
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2203
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442 |
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443 if (prepend) |
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444 { |
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2926
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445 path = std_path + Vexec_path; |
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446 |
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2203
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447 if (append) |
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2926
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448 path.append (std_path); |
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2203
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449 } |
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450 else |
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451 { |
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2926
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452 path = Vexec_path; |
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453 |
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2203
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454 if (append) |
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2926
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455 path.append (std_path); |
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2203
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456 } |
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457 } |
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458 else |
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2926
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459 path = std_path; |
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2203
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460 |
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2926
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461 octave_env::putenv ("PATH", path); |
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2203
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462 } |
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463 |
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464 return status; |
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465 } |
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466 |
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467 static int |
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468 imagepath (void) |
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469 { |
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470 int status = 0; |
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471 |
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3523
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472 std::string s = builtin_string_variable ("IMAGEPATH"); |
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2203
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473 |
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474 if (s.empty ()) |
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475 { |
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476 gripe_invalid_value_specified ("IMAGEPATH"); |
|
|
477 status = -1; |
|
|
478 } |
|
|
479 else |
|
|
480 Vimagepath = s; |
|
|
481 |
|
|
482 return status; |
|
|
483 } |
|
|
484 |
|
|
485 static int |
|
|
486 loadpath (void) |
|
|
487 { |
|
|
488 int status = 0; |
|
|
489 |
|
3523
|
490 std::string s = builtin_string_variable ("LOADPATH"); |
|
2203
|
491 |
|
|
492 if (s.empty ()) |
|
|
493 { |
|
|
494 gripe_invalid_value_specified ("LOADPATH"); |
|
|
495 status = -1; |
|
|
496 } |
|
|
497 else |
|
3174
|
498 { |
|
3971
|
499 // I'm not sure whether this causes more problems that it |
|
|
500 // solves... |
|
|
501 // if (! (s[0] == ':' || s[s.length () - 1] == ':' |
|
|
502 // || s.find ("::") != NPOS)) |
|
|
503 // warning ("LOADPATH will ignore default load path"); |
|
3967
|
504 |
|
3195
|
505 Vload_path = s; |
|
3174
|
506 |
|
4217
|
507 update_load_path_dir_path (); |
|
|
508 } |
|
|
509 |
|
|
510 return status; |
|
|
511 } |
|
|
512 |
|
|
513 static int |
|
|
514 default_load_path (void) |
|
|
515 { |
|
|
516 int status = 0; |
|
|
517 |
|
|
518 std::string s = builtin_string_variable ("DEFAULT_LOADPATH"); |
|
|
519 |
|
|
520 if (s.empty ()) |
|
|
521 { |
|
|
522 gripe_invalid_value_specified ("DEFAULT_LOADPATH"); |
|
|
523 status = -1; |
|
|
524 } |
|
|
525 else |
|
|
526 { |
|
|
527 Vdefault_load_path = s; |
|
|
528 |
|
|
529 update_load_path_dir_path (); |
|
3174
|
530 } |
|
2203
|
531 |
|
|
532 return status; |
|
|
533 } |
|
|
534 |
|
|
535 void |
|
|
536 symbols_of_defaults (void) |
|
|
537 { |
|
3258
|
538 DEFVAR (EDITOR, Veditor, editor, |
|
3368
|
539 "-*- texinfo -*-\n\ |
|
|
540 @defvr {Built-in Variable} EDITOR\n\ |
|
|
541 A string naming the editor to use with the @code{edit_history} command.\n\ |
|
|
542 If the environment variable @code{EDITOR} is set when Octave starts, its\n\ |
|
|
543 value is used as the default. Otherwise, @code{EDITOR} is set to\n\ |
|
|
544 @code{\"emacs\"}.\n\ |
|
|
545 @end defvr"); |
|
2203
|
546 |
|
3258
|
547 DEFVAR (EXEC_PATH, Vexec_path, exec_path, |
|
3301
|
548 "-*- texinfo -*-\n\ |
|
|
549 @defvr {Built-in Variable} EXEC_PATH\n\ |
|
|
550 The variable @code{EXEC_PATH} is a colon separated list of directories\n\ |
|
|
551 to search when executing subprograms. Its initial value is taken from\n\ |
|
|
552 the environment variable @code{OCTAVE_EXEC_PATH} (if it exists) or\n\ |
|
|
553 @code{PATH}, but that value can be overridden by the command line\n\ |
|
|
554 argument @code{--exec-path PATH}, or by setting the value of\n\ |
|
|
555 @code{EXEC_PATH} in a startup script. If the value of @code{EXEC_PATH}\n\ |
|
|
556 begins (ends) with a colon, the directories\n\ |
|
|
557 \n\ |
|
|
558 @example\n\ |
|
|
559 @group\n\ |
|
|
560 @var{octave-home}/libexec/octave/site/exec/@var{arch}\n\ |
|
|
561 @var{octave-home}/libexec/octave/@var{version}/exec/@var{arch}\n\ |
|
|
562 @end group\n\ |
|
|
563 @end example\n\ |
|
|
564 \n\ |
|
|
565 @noindent\n\ |
|
|
566 are prepended (appended) to @code{EXEC_PATH}, where @var{octave-home}\n\ |
|
|
567 is the top-level directory where all of Octave is installed\n\ |
|
|
568 (the default value is @file{@value{OCTAVEHOME}}). If you don't specify\n\ |
|
|
569 a value for @code{EXEC_PATH} explicitly, these special directories are\n\ |
|
|
570 prepended to your shell path.\n\ |
|
|
571 @end defvr"); |
|
2203
|
572 |
|
3258
|
573 DEFVAR (LOADPATH, Vload_path, loadpath, |
|
3371
|
574 "-*- texinfo -*-\n\ |
|
|
575 @defvr {Built-in Variable} LOADPATH\n\ |
|
|
576 A colon separated list of directories in which to search for function\n\ |
|
|
577 files. @xref{Functions and Scripts}. The value of @code{LOADPATH}\n\ |
|
|
578 overrides the environment variable @code{OCTAVE_PATH}. @xref{Installation}.\n\ |
|
|
579 \n\ |
|
|
580 @code{LOADPATH} is now handled in the same way as @TeX{} handles\n\ |
|
|
581 @code{TEXINPUTS}. Leading, trailing, or doubled colons that appear in\n\ |
|
|
582 @code{LOADPATH} are replaced by the value of @code{DEFAULT_LOADPATH}.\n\ |
|
|
583 The default value of @code{LOADPATH} is @code{\":\"}, which tells Octave\n\ |
|
|
584 to search in the directories specified by @code{DEFAULT_LOADPATH}.\n\ |
|
|
585 \n\ |
|
|
586 In addition, if any path element ends in @samp{//}, that directory and\n\ |
|
|
587 all subdirectories it contains are searched recursively for function\n\ |
|
|
588 files. This can result in a slight delay as Octave caches the lists of\n\ |
|
|
589 files found in the @code{LOADPATH} the first time Octave searches for a\n\ |
|
|
590 function. After that, searching is usually much faster because Octave\n\ |
|
|
591 normally only needs to search its internal cache for files.\n\ |
|
|
592 \n\ |
|
|
593 To improve performance of recursive directory searching, it is best for\n\ |
|
|
594 each directory that is to be searched recursively to contain\n\ |
|
|
595 @emph{either} additional subdirectories @emph{or} function files, but\n\ |
|
|
596 not a mixture of both.\n\ |
|
|
597 \n\ |
|
3402
|
598 @xref{Organization of Functions}, for a description of the function file\n\ |
|
3371
|
599 directories that are distributed with Octave.\n\ |
|
|
600 @end defvr"); |
|
2203
|
601 |
|
4217
|
602 DEFVAR (DEFAULT_LOADPATH, Vdefault_load_path, default_load_path, |
|
3371
|
603 "-*- texinfo -*-\n\ |
|
|
604 @defvr {Built-in Variable} DEFAULT_LOADPATH\n\ |
|
|
605 A colon separated list of directories in which to search for function\n\ |
|
|
606 files by default. The value of this variable is also automatically\n\ |
|
|
607 substituted for leading, trailing, or doubled colons that appear in the\n\ |
|
|
608 built-in variable @code{LOADPATH}.\n\ |
|
|
609 @end defvr"); |
|
3192
|
610 |
|
3258
|
611 DEFVAR (IMAGEPATH, OCTAVE_IMAGEPATH, imagepath, |
|
3373
|
612 "-*- texinfo -*-\n\ |
|
3532
|
613 @defvr {Built-in Variable} IMAGEPATH\n\ |
|
3373
|
614 A colon separated list of directories in which to search for image\n\ |
|
|
615 files.\n\ |
|
|
616 @end defvr"); |
|
2203
|
617 |
|
3141
|
618 DEFCONST (OCTAVE_HOME, Voctave_home, |
|
3446
|
619 "-*- texinfo -*-\n\ |
|
|
620 @defvr {Built-in Variable} OCTAVE_HOME\n\ |
|
|
621 The name of the top-level Octave installation directory.\n\ |
|
|
622 @end defvr"); |
|
2831
|
623 |
|
3141
|
624 DEFCONSTX ("OCTAVE_VERSION", SBV_OCTAVE_VERSION, OCTAVE_VERSION, |
|
3301
|
625 "-*- texinfo -*-\n\ |
|
3373
|
626 @defvr {Built-in Variable} OCTAVE_VERSION\n\ |
|
3301
|
627 The version number of Octave, as a string.\n\ |
|
|
628 @end defvr"); |
|
3446
|
629 |
|
2203
|
630 } |
|
|
631 |
|
3185
|
632 DEFUN (rehash, , , |
|
3446
|
633 "-*- texinfo -*-\n\ |
|
|
634 @deftypefn {Built-in Function} {} rehash ()\n\ |
|
|
635 Reinitialize Octave's @code{LOADPATH} directory cache.\n\ |
|
|
636 @end deftypefn") |
|
3185
|
637 { |
|
|
638 octave_value_list retval; |
|
|
639 |
|
|
640 Vload_path_dir_path.rehash (); |
|
|
641 |
|
|
642 return retval; |
|
|
643 } |
|
|
644 |
|
2203
|
645 /* |
|
|
646 ;;; Local Variables: *** |
|
|
647 ;;; mode: C++ *** |
|
|
648 ;;; End: *** |
|
|
649 */ |
