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1 /* |
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2 |
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3 Copyright (C) 1996, 1997 John W. Eaton |
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4 |
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5 This file is part of Octave. |
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6 |
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7 Octave is free software; you can redistribute it and/or modify it |
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8 under the terms of the GNU General Public License as published by the |
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9 Free Software Foundation; either version 2, or (at your option) any |
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10 later version. |
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11 |
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12 Octave is distributed in the hope that it will be useful, but WITHOUT |
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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15 for more details. |
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16 |
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17 You should have received a copy of the GNU General Public License |
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18 along with Octave; see the file COPYING. If not, write to the Free |
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19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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20 |
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21 */ |
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22 |
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23 #ifdef HAVE_CONFIG_H |
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24 #include <config.h> |
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25 #endif |
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26 |
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27 #include <iostream.h> |
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28 |
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29 #include <cstdlib> |
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30 |
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31 #include <string> |
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32 |
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33 #ifdef HAVE_UNISTD_H |
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34 #ifdef HAVE_SYS_TYPES_H |
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35 #include <sys/types.h> |
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36 #endif |
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37 #include <unistd.h> |
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38 #endif |
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39 |
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40 #include "oct-env.h" |
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41 #include "pathsearch.h" |
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42 |
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43 #include <defaults.h> |
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44 #include "defun.h" |
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45 #include "error.h" |
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3040
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46 #include "file-ops.h" |
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47 #include "gripes.h" |
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48 #include "help.h" |
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49 #include "oct-obj.h" |
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2390
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50 #include "ov.h" |
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51 #include "toplev.h" |
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52 #include "variables.h" |
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2492
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53 #include <version.h> |
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54 |
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55 string Voctave_home; |
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56 |
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57 string Vbin_dir; |
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58 string Vinfo_dir; |
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59 string Vdata_dir; |
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60 string Vlibexec_dir; |
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61 string Varch_lib_dir; |
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62 string Vlocal_arch_lib_dir; |
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63 string Vfcn_file_dir; |
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64 |
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65 // The path that will be searched for programs that we execute. |
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66 // (--exec-path path) |
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67 string Vexec_path; |
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68 |
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69 // Load path specified on command line. |
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70 // (--path path; -p path) |
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71 static string Vload_path; |
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72 |
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73 // The default load path with OCTAVE_HOME appropriately substituted. |
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74 static string Vdefault_load_path; |
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75 |
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76 // And the cached directory path corresponding to Vload_path. |
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77 dir_path Vload_path_dir_path; |
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78 |
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79 // Name of the editor to be invoked by the edit_history command. |
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80 string Veditor; |
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81 |
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82 string Vimagepath; |
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83 |
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84 string Vlocal_site_defaults_file; |
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85 string Vsite_defaults_file; |
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86 |
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87 static string |
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88 subst_octave_home (const string& s) |
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89 { |
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90 string retval; |
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91 |
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92 string prefix = OCTAVE_PREFIX; |
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93 |
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94 retval = s; |
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95 |
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96 if (Voctave_home != prefix) |
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97 { |
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98 int len = prefix.length (); |
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99 size_t start = 0; |
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100 while ((start = retval.find (prefix, start)) != NPOS) |
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101 { |
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102 retval.replace (start, len, Voctave_home); |
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103 start += len; |
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104 } |
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105 } |
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106 |
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107 return retval; |
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108 } |
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109 |
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110 static void |
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111 set_octave_home (void) |
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112 { |
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113 string oh = octave_env::getenv ("OCTAVE_HOME"); |
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114 |
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115 Voctave_home = oh.empty () ? string (OCTAVE_PREFIX) : oh; |
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116 } |
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117 |
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118 static void |
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119 set_default_info_dir (void) |
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120 { |
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121 Vinfo_dir = subst_octave_home (OCTAVE_INFODIR); |
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122 } |
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123 |
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124 static void |
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125 set_default_data_dir (void) |
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126 { |
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127 Vdata_dir = subst_octave_home (OCTAVE_DATADIR); |
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128 } |
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129 |
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130 static void |
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131 set_default_libexec_dir (void) |
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132 { |
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133 Vlibexec_dir = subst_octave_home (OCTAVE_LIBEXECDIR); |
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134 } |
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135 |
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136 static void |
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137 set_default_arch_lib_dir (void) |
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138 { |
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139 Varch_lib_dir = subst_octave_home (OCTAVE_ARCHLIBDIR); |
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140 } |
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141 |
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142 static void |
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143 set_default_local_arch_lib_dir (void) |
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144 { |
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145 Vlocal_arch_lib_dir = subst_octave_home (OCTAVE_LOCALARCHLIBDIR); |
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146 } |
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147 |
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148 static void |
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149 set_default_fcn_file_dir (void) |
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150 { |
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151 Vfcn_file_dir = subst_octave_home (OCTAVE_FCNFILEDIR); |
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152 } |
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153 |
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154 static void |
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155 set_default_bin_dir (void) |
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156 { |
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157 Vbin_dir = subst_octave_home (OCTAVE_BINDIR); |
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158 } |
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159 |
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160 static void |
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161 set_default_exec_path (void) |
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162 { |
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163 string octave_exec_path = octave_env::getenv ("OCTAVE_EXEC_PATH"); |
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164 |
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165 if (octave_exec_path.empty ()) |
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166 { |
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167 string shell_path = octave_env::getenv ("PATH"); |
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168 |
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169 if (! shell_path.empty ()) |
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170 { |
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171 Vexec_path = string (":"); |
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172 Vexec_path.append (shell_path); |
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173 } |
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174 } |
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175 else |
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176 Vexec_path = string (octave_exec_path); |
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177 } |
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178 |
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179 static void |
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180 set_default_path (void) |
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181 { |
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182 Vdefault_load_path = subst_octave_home (OCTAVE_FCNFILEPATH); |
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183 |
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184 string oct_path = octave_env::getenv ("OCTAVE_PATH"); |
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185 |
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186 Vload_path = oct_path.empty () ? string (":") : oct_path; |
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187 |
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188 Vload_path_dir_path = dir_path (Vload_path, Vdefault_load_path); |
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189 } |
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190 |
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191 static void |
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192 set_default_info_file (void) |
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193 { |
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194 string std_info_file = subst_octave_home (OCTAVE_INFOFILE); |
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195 |
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196 string oct_info_file = octave_env::getenv ("OCTAVE_INFO_FILE"); |
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197 |
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198 Vinfo_file = oct_info_file.empty () ? std_info_file : oct_info_file; |
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199 } |
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200 |
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201 static void |
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202 set_default_info_prog (void) |
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203 { |
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204 string oct_info_prog = octave_env::getenv ("OCTAVE_INFO_PROGRAM"); |
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205 |
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206 if (oct_info_prog.empty ()) |
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207 Vinfo_prog = "info"; |
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208 else |
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209 Vinfo_prog = string (oct_info_prog); |
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210 } |
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211 |
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212 static void |
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213 set_default_editor (void) |
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214 { |
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215 Veditor = "emacs"; |
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216 |
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217 string env_editor = octave_env::getenv ("EDITOR"); |
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218 |
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219 if (! env_editor.empty ()) |
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220 Veditor = env_editor; |
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221 } |
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222 |
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223 static void |
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224 set_local_site_defaults_file (void) |
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225 { |
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226 Vlocal_site_defaults_file = subst_octave_home (OCTAVE_LOCALSTARTUPFILEDIR); |
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227 Vlocal_site_defaults_file.append ("/octaverc"); |
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228 } |
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229 |
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230 static void |
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231 set_site_defaults_file (void) |
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232 { |
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233 Vsite_defaults_file = subst_octave_home (OCTAVE_STARTUPFILEDIR); |
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234 Vsite_defaults_file.append ("/octaverc"); |
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235 } |
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236 |
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237 string |
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238 maybe_add_default_load_path (const string& pathstring) |
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239 { |
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240 string retval; |
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241 |
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242 if (! pathstring.empty ()) |
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243 { |
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244 if (pathstring[0] == SEPCHAR) |
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245 { |
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246 retval = Vdefault_load_path; |
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247 retval.append (pathstring); |
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248 } |
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249 else |
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250 retval = pathstring; |
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251 |
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252 if (pathstring[pathstring.length () - 1] == SEPCHAR) |
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253 retval.append (Vdefault_load_path); |
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254 |
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255 size_t pos = 0; |
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256 do |
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257 { |
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258 pos = retval.find ("::"); |
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259 |
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260 if (pos != NPOS) |
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261 retval.insert (pos+1, Vdefault_load_path); |
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262 } |
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263 while (pos != NPOS); |
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264 } |
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265 |
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266 return retval; |
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267 } |
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268 |
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269 void |
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270 install_defaults (void) |
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271 { |
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272 // OCTAVE_HOME must be set first! |
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273 |
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274 set_octave_home (); |
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275 |
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276 set_default_info_dir (); |
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277 |
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278 set_default_data_dir (); |
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279 |
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280 set_default_libexec_dir (); |
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281 |
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282 set_default_arch_lib_dir (); |
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283 |
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284 set_default_local_arch_lib_dir (); |
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285 |
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286 set_default_fcn_file_dir (); |
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287 |
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288 set_default_bin_dir (); |
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289 |
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290 set_default_exec_path (); |
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291 |
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292 set_default_path (); |
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293 |
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294 set_default_info_file (); |
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295 |
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296 set_default_info_prog (); |
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297 |
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298 set_default_editor (); |
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299 |
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300 set_local_site_defaults_file (); |
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301 |
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302 set_site_defaults_file (); |
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303 } |
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304 |
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305 static int |
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306 editor (void) |
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307 { |
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308 int status = 0; |
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309 |
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310 string s = builtin_string_variable ("EDITOR"); |
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311 |
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312 if (s.empty ()) |
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313 { |
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314 gripe_invalid_value_specified ("EDITOR"); |
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315 status = -1; |
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316 } |
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317 else |
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318 Veditor = s; |
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319 |
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320 return status; |
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321 } |
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322 |
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323 static int |
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324 exec_path (void) |
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325 { |
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326 int status = 0; |
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327 |
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328 string s = builtin_string_variable ("EXEC_PATH"); |
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329 |
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330 if (s.empty ()) |
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331 { |
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332 gripe_invalid_value_specified ("EXEC_PATH"); |
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333 status = -1; |
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334 } |
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335 else |
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336 { |
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337 Vexec_path = s; |
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338 |
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339 string std_path = Vlocal_arch_lib_dir + string (SEPCHAR_STR) |
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340 + Varch_lib_dir + string (SEPCHAR_STR) + Vbin_dir; |
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341 |
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342 string path; |
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343 |
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344 int eplen = Vexec_path.length (); |
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345 |
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346 if (eplen > 0) |
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347 { |
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348 bool prepend = (Vexec_path[0] == ':'); |
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349 bool append = (eplen > 1 && Vexec_path[eplen-1] == ':'); |
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350 |
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351 if (prepend) |
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352 { |
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353 path = std_path + Vexec_path; |
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354 |
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355 if (append) |
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356 path.append (std_path); |
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357 } |
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358 else |
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359 { |
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360 path = Vexec_path; |
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361 |
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362 if (append) |
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363 path.append (std_path); |
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364 } |
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365 } |
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366 else |
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367 path = std_path; |
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368 |
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369 octave_env::putenv ("PATH", path); |
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370 } |
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371 |
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372 return status; |
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373 } |
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374 |
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375 static int |
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376 imagepath (void) |
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377 { |
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378 int status = 0; |
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379 |
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380 string s = builtin_string_variable ("IMAGEPATH"); |
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381 |
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382 if (s.empty ()) |
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383 { |
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384 gripe_invalid_value_specified ("IMAGEPATH"); |
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385 status = -1; |
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386 } |
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387 else |
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388 Vimagepath = s; |
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389 |
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390 return status; |
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391 } |
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392 |
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393 static int |
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394 loadpath (void) |
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395 { |
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396 int status = 0; |
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397 |
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398 string s = builtin_string_variable ("LOADPATH"); |
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399 |
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400 if (s.empty ()) |
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401 { |
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402 gripe_invalid_value_specified ("LOADPATH"); |
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403 status = -1; |
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404 } |
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405 else |
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3174
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406 { |
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407 Vload_path = s; |
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408 |
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409 Vload_path_dir_path = dir_path (Vload_path, Vdefault_load_path); |
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410 } |
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411 |
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412 return status; |
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413 } |
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414 |
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415 void |
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416 symbols_of_defaults (void) |
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417 { |
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3258
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418 DEFVAR (EDITOR, Veditor, editor, |
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419 "name of the editor to be invoked by the edit_history command"); |
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420 |
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421 DEFVAR (EXEC_PATH, Vexec_path, exec_path, |
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3301
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422 "-*- texinfo -*-\n\ |
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423 @defvr {Built-in Variable} EXEC_PATH\n\ |
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424 The variable @code{EXEC_PATH} is a colon separated list of directories\n\ |
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425 to search when executing subprograms. Its initial value is taken from\n\ |
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426 the environment variable @code{OCTAVE_EXEC_PATH} (if it exists) or\n\ |
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427 @code{PATH}, but that value can be overridden by the command line\n\ |
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428 argument @code{--exec-path PATH}, or by setting the value of\n\ |
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429 @code{EXEC_PATH} in a startup script. If the value of @code{EXEC_PATH}\n\ |
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430 begins (ends) with a colon, the directories\n\ |
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431 \n\ |
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432 @example\n\ |
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433 @group\n\ |
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434 @var{octave-home}/libexec/octave/site/exec/@var{arch}\n\ |
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435 @var{octave-home}/libexec/octave/@var{version}/exec/@var{arch}\n\ |
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436 @end group\n\ |
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437 @end example\n\ |
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438 \n\ |
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439 @noindent\n\ |
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440 are prepended (appended) to @code{EXEC_PATH}, where @var{octave-home}\n\ |
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441 is the top-level directory where all of Octave is installed\n\ |
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442 (the default value is @file{@value{OCTAVEHOME}}). If you don't specify\n\ |
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443 a value for @code{EXEC_PATH} explicitly, these special directories are\n\ |
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444 prepended to your shell path.\n\ |
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445 @end defvr"); |
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2203
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446 |
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3258
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447 DEFVAR (LOADPATH, Vload_path, loadpath, |
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448 "colon separated list of directories to search for scripts.\n\ |
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449 The default value is \":\", which means to search the default list\n\ |
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450 of directories. The default list of directories may be found in\n\ |
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451 the built-in constant DEFAULT_LOADPATH"); |
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2203
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452 |
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3192
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453 DEFCONST (DEFAULT_LOADPATH, Vdefault_load_path, |
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454 "the default colon separated list of directories to search for scripts"); |
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455 |
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3258
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456 DEFVAR (IMAGEPATH, OCTAVE_IMAGEPATH, imagepath, |
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457 "colon separated list of directories to search for image files"); |
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458 |
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3141
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459 DEFCONST (OCTAVE_HOME, Voctave_home, |
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2831
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460 "top-level Octave installation directory"); |
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461 |
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3141
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462 DEFCONSTX ("OCTAVE_VERSION", SBV_OCTAVE_VERSION, OCTAVE_VERSION, |
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3301
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463 "-*- texinfo -*-\n\ |
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464 @defvr\n\ |
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465 The version number of Octave, as a string.\n\ |
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466 @end defvr"); |
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2203
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467 } |
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468 |
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3185
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469 DEFUN (rehash, , , |
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470 "rehash (): reinitialize LOADPATH directory cache") |
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471 { |
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472 octave_value_list retval; |
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473 |
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474 Vload_path_dir_path.rehash (); |
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475 |
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476 return retval; |
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477 } |
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478 |
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2203
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479 /* |
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480 ;;; Local Variables: *** |
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481 ;;; mode: C++ *** |
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482 ;;; End: *** |
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483 */ |
