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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 |
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42 #include <defaults.h> |
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43 #include "defun.h" |
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44 #include "error.h" |
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45 #include "file-ops.h" |
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46 #include "gripes.h" |
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47 #include "help.h" |
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48 #include "ov.h" |
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49 #include "toplev.h" |
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50 #include "variables.h" |
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51 #include <version.h> |
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52 |
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53 string Voctave_home; |
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54 |
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55 string Vbin_dir; |
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56 string Vinfo_dir; |
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57 string Vdata_dir; |
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58 string Vlibexec_dir; |
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59 string Varch_lib_dir; |
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60 string Vlocal_arch_lib_dir; |
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61 string Vfcn_file_dir; |
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62 |
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63 // The path that will be searched for programs that we execute. |
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64 // (--exec-path path) |
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65 string Vexec_path; |
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66 |
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67 // Load path specified on command line. |
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68 // (--path path; -p path) |
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69 string Vload_path; |
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70 |
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71 // Name of the editor to be invoked by the edit_history command. |
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72 string Veditor; |
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73 |
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74 string Vimagepath; |
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75 |
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76 string Vlocal_site_defaults_file; |
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77 string Vsite_defaults_file; |
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78 |
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79 static string |
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80 subst_octave_home (const string& s) |
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81 { |
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82 string retval; |
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83 |
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84 string prefix = OCTAVE_PREFIX; |
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85 |
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86 retval = s; |
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87 |
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88 if (Voctave_home != prefix) |
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89 { |
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90 int len = prefix.length (); |
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91 size_t start = 0; |
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92 while ((start = retval.find (prefix, start)) != NPOS) |
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93 { |
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94 retval.replace (start, len, Voctave_home); |
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95 start += len; |
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96 } |
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97 } |
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98 |
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99 return retval; |
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100 } |
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101 |
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102 static void |
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103 set_octave_home (void) |
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104 { |
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105 string oh = octave_env::getenv ("OCTAVE_HOME"); |
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106 |
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107 Voctave_home = oh.empty () ? string (OCTAVE_PREFIX) : oh; |
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108 } |
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109 |
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110 static void |
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111 set_default_info_dir (void) |
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112 { |
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113 Vinfo_dir = subst_octave_home (OCTAVE_INFODIR); |
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114 } |
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115 |
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116 static void |
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117 set_default_data_dir (void) |
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118 { |
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119 Vdata_dir = subst_octave_home (OCTAVE_DATADIR); |
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120 } |
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121 |
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122 static void |
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123 set_default_libexec_dir (void) |
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124 { |
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125 Vlibexec_dir = subst_octave_home (OCTAVE_LIBEXECDIR); |
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126 } |
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127 |
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128 static void |
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129 set_default_arch_lib_dir (void) |
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130 { |
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131 Varch_lib_dir = subst_octave_home (OCTAVE_ARCHLIBDIR); |
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132 } |
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133 |
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134 static void |
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135 set_default_local_arch_lib_dir (void) |
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136 { |
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137 Vlocal_arch_lib_dir = subst_octave_home (OCTAVE_LOCALARCHLIBDIR); |
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138 } |
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139 |
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140 static void |
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141 set_default_fcn_file_dir (void) |
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142 { |
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143 Vfcn_file_dir = subst_octave_home (OCTAVE_FCNFILEDIR); |
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144 } |
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145 |
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146 static void |
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147 set_default_bin_dir (void) |
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148 { |
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149 Vbin_dir = subst_octave_home (OCTAVE_BINDIR); |
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150 } |
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151 |
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152 static void |
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153 set_default_exec_path (void) |
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154 { |
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155 string octave_exec_path = octave_env::getenv ("OCTAVE_EXEC_PATH"); |
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156 |
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157 if (octave_exec_path.empty ()) |
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158 { |
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159 string shell_path = octave_env::getenv ("PATH"); |
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160 |
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161 if (! shell_path.empty ()) |
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162 { |
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163 Vexec_path = string (":"); |
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164 Vexec_path.append (shell_path); |
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165 } |
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166 } |
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167 else |
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168 Vexec_path = string (octave_exec_path); |
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169 } |
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170 |
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171 // Handle OCTAVE_PATH from the environment like TeX handles TEXINPUTS. |
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172 // If the path starts with `:', prepend the standard path. If it ends |
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173 // with `:' append the standard path. If it begins and ends with |
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174 // `:', do both (which is useless, but the luser asked for it...). |
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175 |
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176 static void |
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177 set_default_path (void) |
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178 { |
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179 string std_path = subst_octave_home (OCTAVE_FCNFILEPATH); |
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180 |
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181 string oct_path = octave_env::getenv ("OCTAVE_PATH"); |
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182 |
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183 Vload_path = oct_path.empty () ? std_path : oct_path; |
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184 } |
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185 |
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186 static void |
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187 set_default_info_file (void) |
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188 { |
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189 string std_info_file = subst_octave_home (OCTAVE_INFOFILE); |
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190 |
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191 string oct_info_file = octave_env::getenv ("OCTAVE_INFO_FILE"); |
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192 |
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193 Vinfo_file = oct_info_file.empty () ? std_info_file : oct_info_file; |
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194 } |
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195 |
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196 static void |
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197 set_default_info_prog (void) |
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198 { |
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199 string oct_info_prog = octave_env::getenv ("OCTAVE_INFO_PROGRAM"); |
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200 |
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201 if (oct_info_prog.empty ()) |
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202 Vinfo_prog = "info"; |
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203 else |
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204 Vinfo_prog = string (oct_info_prog); |
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205 } |
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206 |
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207 static void |
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208 set_default_editor (void) |
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209 { |
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210 Veditor = "emacs"; |
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211 |
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212 string env_editor = octave_env::getenv ("EDITOR"); |
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213 |
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214 if (! env_editor.empty ()) |
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215 Veditor = env_editor; |
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216 } |
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217 |
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218 static void |
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219 set_local_site_defaults_file (void) |
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220 { |
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221 Vlocal_site_defaults_file = subst_octave_home (OCTAVE_LOCALSTARTUPFILEDIR); |
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222 Vlocal_site_defaults_file.append ("/octaverc"); |
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223 } |
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224 |
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225 static void |
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226 set_site_defaults_file (void) |
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227 { |
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228 Vsite_defaults_file = subst_octave_home (OCTAVE_STARTUPFILEDIR); |
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229 Vsite_defaults_file.append ("/octaverc"); |
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230 } |
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231 |
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232 string |
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233 maybe_add_default_load_path (const string& pathstring) |
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234 { |
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235 string std_path = subst_octave_home (OCTAVE_FCNFILEPATH); |
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236 |
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237 string retval; |
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238 |
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239 if (! pathstring.empty ()) |
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240 { |
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241 if (pathstring[0] == SEPCHAR) |
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242 { |
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243 retval = std_path; |
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244 retval.append (pathstring); |
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245 } |
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246 else |
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247 retval = pathstring; |
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248 |
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249 if (pathstring[pathstring.length () - 1] == SEPCHAR) |
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250 retval.append (std_path); |
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251 } |
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252 |
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253 return retval; |
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254 } |
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255 |
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256 void |
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257 install_defaults (void) |
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258 { |
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259 // OCTAVE_HOME must be set first! |
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260 |
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261 set_octave_home (); |
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262 |
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263 set_default_info_dir (); |
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264 |
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265 set_default_data_dir (); |
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266 |
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267 set_default_libexec_dir (); |
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268 |
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269 set_default_arch_lib_dir (); |
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270 |
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271 set_default_local_arch_lib_dir (); |
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272 |
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273 set_default_fcn_file_dir (); |
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274 |
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275 set_default_bin_dir (); |
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276 |
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277 set_default_exec_path (); |
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278 |
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279 set_default_path (); |
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280 |
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281 set_default_info_file (); |
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282 |
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283 set_default_info_prog (); |
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284 |
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285 set_default_editor (); |
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286 |
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287 set_local_site_defaults_file (); |
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288 |
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289 set_site_defaults_file (); |
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290 } |
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291 |
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292 static int |
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293 editor (void) |
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294 { |
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295 int status = 0; |
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296 |
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297 string s = builtin_string_variable ("EDITOR"); |
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298 |
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299 if (s.empty ()) |
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300 { |
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301 gripe_invalid_value_specified ("EDITOR"); |
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302 status = -1; |
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303 } |
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304 else |
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305 Veditor = s; |
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306 |
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307 return status; |
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308 } |
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309 |
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310 static int |
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311 exec_path (void) |
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312 { |
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313 int status = 0; |
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314 |
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315 string s = builtin_string_variable ("EXEC_PATH"); |
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316 |
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317 if (s.empty ()) |
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318 { |
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319 gripe_invalid_value_specified ("EXEC_PATH"); |
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320 status = -1; |
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321 } |
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322 else |
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323 { |
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324 Vexec_path = s; |
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325 |
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326 string std_path = Vlocal_arch_lib_dir + string (SEPCHAR_STR) |
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327 + Varch_lib_dir + string (SEPCHAR_STR) + Vbin_dir; |
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328 |
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329 string path; |
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330 |
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331 int eplen = Vexec_path.length (); |
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332 |
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333 if (eplen > 0) |
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334 { |
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335 bool prepend = (Vexec_path[0] == ':'); |
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336 bool append = (eplen > 1 && Vexec_path[eplen-1] == ':'); |
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337 |
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338 if (prepend) |
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339 { |
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340 path = std_path + Vexec_path; |
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341 |
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342 if (append) |
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343 path.append (std_path); |
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344 } |
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345 else |
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346 { |
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347 path = Vexec_path; |
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348 |
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349 if (append) |
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350 path.append (std_path); |
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351 } |
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352 } |
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353 else |
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354 path = std_path; |
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355 |
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356 octave_env::putenv ("PATH", path); |
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357 } |
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358 |
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359 return status; |
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360 } |
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361 |
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362 static int |
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363 imagepath (void) |
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364 { |
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365 int status = 0; |
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366 |
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367 string s = builtin_string_variable ("IMAGEPATH"); |
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368 |
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369 if (s.empty ()) |
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370 { |
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371 gripe_invalid_value_specified ("IMAGEPATH"); |
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372 status = -1; |
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373 } |
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374 else |
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375 Vimagepath = s; |
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376 |
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377 return status; |
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378 } |
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379 |
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380 static int |
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381 loadpath (void) |
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382 { |
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383 int status = 0; |
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384 |
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385 string s = builtin_string_variable ("LOADPATH"); |
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386 |
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387 if (s.empty ()) |
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388 { |
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389 gripe_invalid_value_specified ("LOADPATH"); |
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390 status = -1; |
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391 } |
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392 else |
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393 Vload_path = file_ops::tilde_expand (maybe_add_default_load_path (s)); |
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394 |
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395 return status; |
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396 } |
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397 |
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398 void |
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399 symbols_of_defaults (void) |
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400 { |
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401 DEFVAR (EDITOR, Veditor, 0, editor, |
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402 "name of the editor to be invoked by the edit_history command"); |
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403 |
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404 DEFVAR (EXEC_PATH, Vexec_path, 0, exec_path, |
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405 "colon separated list of directories to search for programs to run"); |
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406 |
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407 DEFVAR (LOADPATH, Vload_path, 0, loadpath, |
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408 "colon separated list of directories to search for scripts"); |
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409 |
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410 DEFVAR (IMAGEPATH, OCTAVE_IMAGEPATH, 0, imagepath, |
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411 "colon separated list of directories to search for image files"); |
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412 |
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413 DEFCONST (OCTAVE_HOME, Voctave_home, |
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414 "top-level Octave installation directory"); |
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415 |
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416 DEFCONSTX ("OCTAVE_VERSION", SBV_OCTAVE_VERSION, OCTAVE_VERSION, |
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417 "Octave version"); |
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418 } |
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419 |
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420 /* |
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421 ;;; Local Variables: *** |
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422 ;;; mode: C++ *** |
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423 ;;; End: *** |
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424 */ |
