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