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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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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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50 #include "ov.h" |
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51 #include "toplev.h" |
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52 #include "variables.h" |
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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 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 // Handle OCTAVE_PATH from the environment like TeX handles TEXINPUTS. |
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180 // If the path starts with `:', prepend the standard path. If it ends |
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181 // with `:' append the standard path. If it begins and ends with |
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182 // `:', do both (which is useless, but the luser asked for it...). |
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183 |
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184 static void |
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185 set_default_path (void) |
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186 { |
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187 Vdefault_load_path = subst_octave_home (OCTAVE_FCNFILEPATH); |
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188 |
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189 string oct_path = octave_env::getenv ("OCTAVE_PATH"); |
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190 |
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191 Vload_path = oct_path.empty () |
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192 ? Vdefault_load_path : maybe_add_default_path (oct_path); |
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193 |
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194 Vload_path_dir_path = dir_path (Vload_path); |
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195 } |
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196 |
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197 static void |
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198 set_default_info_file (void) |
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199 { |
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200 string std_info_file = subst_octave_home (OCTAVE_INFOFILE); |
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201 |
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202 string oct_info_file = octave_env::getenv ("OCTAVE_INFO_FILE"); |
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203 |
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204 Vinfo_file = oct_info_file.empty () ? std_info_file : oct_info_file; |
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205 } |
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206 |
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207 static void |
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208 set_default_info_prog (void) |
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209 { |
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210 string oct_info_prog = octave_env::getenv ("OCTAVE_INFO_PROGRAM"); |
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211 |
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212 if (oct_info_prog.empty ()) |
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213 Vinfo_prog = "info"; |
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214 else |
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215 Vinfo_prog = string (oct_info_prog); |
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216 } |
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217 |
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218 static void |
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219 set_default_editor (void) |
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220 { |
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221 Veditor = "emacs"; |
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222 |
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223 string env_editor = octave_env::getenv ("EDITOR"); |
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224 |
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225 if (! env_editor.empty ()) |
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226 Veditor = env_editor; |
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227 } |
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228 |
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229 static void |
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230 set_local_site_defaults_file (void) |
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231 { |
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232 Vlocal_site_defaults_file = subst_octave_home (OCTAVE_LOCALSTARTUPFILEDIR); |
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233 Vlocal_site_defaults_file.append ("/octaverc"); |
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234 } |
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235 |
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236 static void |
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237 set_site_defaults_file (void) |
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238 { |
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239 Vsite_defaults_file = subst_octave_home (OCTAVE_STARTUPFILEDIR); |
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240 Vsite_defaults_file.append ("/octaverc"); |
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241 } |
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242 |
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243 string |
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244 maybe_add_default_load_path (const string& pathstring) |
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245 { |
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246 string retval; |
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247 |
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248 if (! pathstring.empty ()) |
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249 { |
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250 if (pathstring[0] == SEPCHAR) |
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251 { |
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252 retval = Vdefault_load_path; |
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253 retval.append (pathstring); |
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254 } |
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255 else |
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256 retval = pathstring; |
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257 |
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258 if (pathstring[pathstring.length () - 1] == SEPCHAR) |
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259 retval.append (Vdefault_load_path); |
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260 |
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261 size_t pos = 0; |
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262 do |
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263 { |
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264 pos = retval.find ("::"); |
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265 |
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266 if (pos != NPOS) |
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267 retval.insert (pos+1, Vdefault_load_path); |
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268 } |
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269 while (pos != NPOS); |
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270 } |
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271 |
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272 return retval; |
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273 } |
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274 |
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275 void |
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276 install_defaults (void) |
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277 { |
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278 // OCTAVE_HOME must be set first! |
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279 |
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280 set_octave_home (); |
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281 |
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282 set_default_info_dir (); |
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283 |
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284 set_default_data_dir (); |
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285 |
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286 set_default_libexec_dir (); |
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287 |
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288 set_default_arch_lib_dir (); |
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289 |
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290 set_default_local_arch_lib_dir (); |
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291 |
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292 set_default_fcn_file_dir (); |
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293 |
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294 set_default_bin_dir (); |
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295 |
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296 set_default_exec_path (); |
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297 |
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298 set_default_path (); |
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299 |
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300 set_default_info_file (); |
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301 |
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302 set_default_info_prog (); |
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303 |
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304 set_default_editor (); |
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305 |
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306 set_local_site_defaults_file (); |
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307 |
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308 set_site_defaults_file (); |
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309 } |
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310 |
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311 static int |
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312 editor (void) |
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313 { |
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314 int status = 0; |
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315 |
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316 string s = builtin_string_variable ("EDITOR"); |
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317 |
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318 if (s.empty ()) |
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319 { |
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320 gripe_invalid_value_specified ("EDITOR"); |
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321 status = -1; |
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322 } |
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323 else |
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324 Veditor = s; |
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325 |
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326 return status; |
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327 } |
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328 |
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329 static int |
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330 exec_path (void) |
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331 { |
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332 int status = 0; |
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333 |
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334 string s = builtin_string_variable ("EXEC_PATH"); |
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335 |
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336 if (s.empty ()) |
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337 { |
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338 gripe_invalid_value_specified ("EXEC_PATH"); |
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339 status = -1; |
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340 } |
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341 else |
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342 { |
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343 Vexec_path = s; |
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344 |
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345 string std_path = Vlocal_arch_lib_dir + string (SEPCHAR_STR) |
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346 + Varch_lib_dir + string (SEPCHAR_STR) + Vbin_dir; |
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347 |
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348 string path; |
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349 |
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350 int eplen = Vexec_path.length (); |
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351 |
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352 if (eplen > 0) |
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353 { |
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354 bool prepend = (Vexec_path[0] == ':'); |
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355 bool append = (eplen > 1 && Vexec_path[eplen-1] == ':'); |
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356 |
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357 if (prepend) |
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358 { |
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359 path = std_path + Vexec_path; |
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360 |
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361 if (append) |
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362 path.append (std_path); |
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363 } |
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364 else |
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365 { |
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366 path = Vexec_path; |
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367 |
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368 if (append) |
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369 path.append (std_path); |
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370 } |
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371 } |
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372 else |
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373 path = std_path; |
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374 |
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375 octave_env::putenv ("PATH", path); |
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376 } |
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377 |
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378 return status; |
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379 } |
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380 |
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381 static int |
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382 imagepath (void) |
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383 { |
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384 int status = 0; |
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385 |
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386 string s = builtin_string_variable ("IMAGEPATH"); |
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387 |
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388 if (s.empty ()) |
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389 { |
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390 gripe_invalid_value_specified ("IMAGEPATH"); |
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391 status = -1; |
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392 } |
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393 else |
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394 Vimagepath = s; |
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395 |
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396 return status; |
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397 } |
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398 |
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399 static int |
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400 loadpath (void) |
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401 { |
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402 int status = 0; |
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403 |
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404 string s = builtin_string_variable ("LOADPATH"); |
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405 |
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406 if (s.empty ()) |
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407 { |
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408 gripe_invalid_value_specified ("LOADPATH"); |
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409 status = -1; |
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410 } |
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411 else |
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412 { |
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413 Vload_path = maybe_add_default_load_path (s); |
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414 |
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415 Vload_path_dir_path = dir_path (Vload_path); |
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416 } |
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417 |
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418 return status; |
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419 } |
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420 |
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421 void |
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422 symbols_of_defaults (void) |
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423 { |
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424 DEFVAR (EDITOR, Veditor, 0, editor, |
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425 "name of the editor to be invoked by the edit_history command"); |
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426 |
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427 DEFVAR (EXEC_PATH, Vexec_path, 0, exec_path, |
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428 "colon separated list of directories to search for programs to run"); |
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429 |
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430 DEFVAR (LOADPATH, ":", 0, octave_loadpath, |
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431 "colon separated list of directories to search for scripts.\n\ |
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432 The default value is \":\", which means to search the default list\n\ |
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433 of directories. The default list of directories may be found in\n\ |
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434 the built-in constant DEFAULT_LOADPATH"); |
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435 |
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3192
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436 DEFCONST (DEFAULT_LOADPATH, Vdefault_load_path, |
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437 "the default colon separated list of directories to search for scripts"); |
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438 |
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439 DEFVAR (IMAGEPATH, OCTAVE_IMAGEPATH, 0, imagepath, |
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440 "colon separated list of directories to search for image files"); |
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441 |
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442 DEFCONST (OCTAVE_HOME, Voctave_home, |
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2831
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443 "top-level Octave installation directory"); |
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444 |
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3141
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445 DEFCONSTX ("OCTAVE_VERSION", SBV_OCTAVE_VERSION, OCTAVE_VERSION, |
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446 "Octave version"); |
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447 } |
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448 |
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3185
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449 DEFUN (rehash, , , |
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450 "rehash (): reinitialize LOADPATH directory cache") |
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451 { |
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452 octave_value_list retval; |
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453 |
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454 Vload_path_dir_path.rehash (); |
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455 |
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456 return retval; |
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457 } |
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458 |
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2203
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459 /* |
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460 ;;; Local Variables: *** |
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461 ;;; mode: C++ *** |
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462 ;;; End: *** |
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463 */ |
