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1 /* |
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2 |
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3 Copyright (C) 1996 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 /* |
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24 |
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25 The function builtin_pwd adapted from a similar function from GNU |
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26 Bash, the Bourne Again SHell, copyright (C) 1987, 1989, 1991 Free |
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27 Software Foundation, Inc. |
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28 |
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29 */ |
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30 |
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31 #ifdef HAVE_CONFIG_H |
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32 #include <config.h> |
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33 #endif |
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34 |
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35 #include <iostream.h> |
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36 |
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37 #include <cstdlib> |
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38 |
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39 #include <string> |
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40 |
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41 #ifdef HAVE_UNISTD_H |
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42 #include <sys/types.h> |
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43 #include <unistd.h> |
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44 #endif |
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45 |
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46 #include "defaults.h" |
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47 #include "defun.h" |
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48 #include "error.h" |
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49 #include "gripes.h" |
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50 #include "help.h" |
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51 #include "ov.h" |
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52 #include "toplev.h" |
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53 #include "variables.h" |
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54 #include "version.h" |
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55 |
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56 string Voctave_home; |
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57 |
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58 string Vbin_dir; |
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59 string Vlib_dir; |
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60 string Vinfo_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 // Name of the editor to be invoked by the edit_history command. |
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74 string Veditor; |
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75 |
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76 string Vimagepath; |
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77 |
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78 string Vlocal_site_defaults_file; |
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79 string Vsite_defaults_file; |
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80 |
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81 static string |
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82 subst_octave_home (const string& s) |
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83 { |
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84 string retval; |
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85 |
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86 string prefix = OCTAVE_PREFIX; |
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87 |
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88 retval = s; |
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89 |
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90 if (Voctave_home != prefix) |
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91 { |
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92 int len = prefix.length (); |
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93 size_t start = 0; |
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94 while ((start = s.find (prefix)) != NPOS) |
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95 { |
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96 retval.replace (start, len, Voctave_home); |
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97 start++; |
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98 } |
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99 } |
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100 |
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101 return retval; |
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102 } |
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103 |
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104 static void |
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105 set_octave_home (void) |
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106 { |
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107 char *oh = getenv ("OCTAVE_HOME"); |
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108 |
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109 Voctave_home = oh ? string (oh) : string (OCTAVE_PREFIX); |
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110 } |
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111 |
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112 static void |
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113 set_default_info_dir (void) |
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114 { |
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115 Vinfo_dir = subst_octave_home (OCTAVE_INFODIR); |
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116 } |
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117 |
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118 static void |
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119 set_default_arch_lib_dir (void) |
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120 { |
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121 Varch_lib_dir = subst_octave_home (OCTAVE_ARCHLIBDIR); |
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122 } |
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123 |
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124 static void |
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125 set_default_local_arch_lib_dir (void) |
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126 { |
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127 Vlocal_arch_lib_dir = subst_octave_home (OCTAVE_LOCALARCHLIBDIR); |
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128 } |
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129 |
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130 static void |
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131 set_default_fcn_file_dir (void) |
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132 { |
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133 Vfcn_file_dir = subst_octave_home (OCTAVE_FCNFILEDIR); |
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134 } |
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135 |
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136 static void |
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137 set_default_bin_dir (void) |
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138 { |
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139 Vbin_dir = subst_octave_home (OCTAVE_BINDIR); |
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140 } |
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141 |
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142 static void |
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143 set_default_lib_dir (void) |
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144 { |
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145 Vlib_dir = subst_octave_home (OCTAVE_LIBDIR); |
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146 } |
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147 |
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148 static void |
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149 set_default_exec_path (void) |
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150 { |
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151 char *octave_exec_path = getenv ("OCTAVE_EXEC_PATH"); |
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152 |
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153 if (octave_exec_path) |
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154 Vexec_path = string (octave_exec_path); |
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155 else |
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156 { |
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157 char *shell_path = getenv ("PATH"); |
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158 |
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159 if (shell_path) |
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160 { |
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161 Vexec_path = string (":"); |
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162 Vexec_path.append (shell_path); |
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163 } |
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164 } |
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165 } |
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166 |
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167 // Handle OCTAVE_PATH from the environment like TeX handles TEXINPUTS. |
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168 // If the path starts with `:', prepend the standard path. If it ends |
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169 // with `:' append the standard path. If it begins and ends with |
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170 // `:', do both (which is useless, but the luser asked for it...). |
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171 |
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172 static void |
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173 set_default_path (void) |
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174 { |
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175 string std_path = subst_octave_home (OCTAVE_FCNFILEPATH); |
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176 |
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177 char *oct_path = getenv ("OCTAVE_PATH"); |
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178 |
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179 Vload_path = oct_path ? string (oct_path) : std_path; |
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180 } |
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181 |
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182 static void |
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183 set_default_info_file (void) |
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184 { |
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185 char *oct_info_file = getenv ("OCTAVE_INFO_FILE"); |
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186 |
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187 if (oct_info_file) |
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188 Vinfo_file = string (oct_info_file); |
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189 else |
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190 { |
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191 Vinfo_file = Vinfo_dir; |
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192 Vinfo_file.append ("/octave.info"); |
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193 } |
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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 char *oct_info_prog = getenv ("OCTAVE_INFO_PROGRAM"); |
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200 |
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201 if (oct_info_prog) |
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202 Vinfo_prog = string (oct_info_prog); |
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203 else |
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204 { |
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205 Vinfo_prog = Varch_lib_dir; |
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206 Vinfo_prog.append ("/info"); |
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207 } |
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208 } |
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209 |
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210 static void |
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211 set_default_editor (void) |
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212 { |
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213 Veditor = "vi"; |
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214 |
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215 char *env_editor = getenv ("EDITOR"); |
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216 |
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217 if (env_editor && *env_editor) |
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218 Veditor = string (env_editor); |
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219 } |
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220 |
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221 static void |
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222 set_local_site_defaults_file (void) |
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223 { |
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224 Vlocal_site_defaults_file = subst_octave_home (OCTAVE_LOCALSTARTUPFILEDIR); |
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225 Vlocal_site_defaults_file.append ("/octaverc"); |
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226 } |
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227 |
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228 static void |
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229 set_site_defaults_file (void) |
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230 { |
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231 Vsite_defaults_file = subst_octave_home (OCTAVE_STARTUPFILEDIR); |
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232 Vsite_defaults_file.append ("/octaverc"); |
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233 } |
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234 |
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235 string |
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236 maybe_add_default_load_path (const string& pathstring) |
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237 { |
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238 string std_path = subst_octave_home (OCTAVE_FCNFILEPATH); |
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239 |
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240 string retval; |
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241 |
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242 if (! pathstring.empty ()) |
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243 { |
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244 if (pathstring[0] == SEPCHAR) |
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245 { |
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246 retval = std_path; |
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247 retval.append (pathstring); |
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248 } |
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249 else |
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250 retval = pathstring; |
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251 |
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252 if (pathstring[pathstring.length () - 1] == SEPCHAR) |
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253 retval.append (std_path); |
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254 } |
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255 |
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256 return retval; |
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257 } |
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258 |
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259 void |
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260 install_defaults (void) |
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261 { |
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262 // OCTAVE_HOME must be set first! |
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263 |
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264 set_octave_home (); |
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265 |
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266 set_default_info_dir (); |
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267 |
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268 set_default_arch_lib_dir (); |
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269 |
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270 set_default_local_arch_lib_dir (); |
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271 |
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272 set_default_fcn_file_dir (); |
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273 |
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274 set_default_bin_dir (); |
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275 |
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276 set_default_lib_dir (); |
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277 |
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278 set_default_exec_path (); |
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279 |
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280 set_default_path (); |
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281 |
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282 set_default_info_file (); |
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283 |
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284 set_default_info_prog (); |
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285 |
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286 set_default_editor (); |
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287 |
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288 set_local_site_defaults_file (); |
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289 |
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290 set_site_defaults_file (); |
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291 } |
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292 |
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293 static int |
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294 editor (void) |
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295 { |
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296 int status = 0; |
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297 |
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298 string s = builtin_string_variable ("EDITOR"); |
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299 |
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300 if (s.empty ()) |
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301 { |
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302 gripe_invalid_value_specified ("EDITOR"); |
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303 status = -1; |
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304 } |
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305 else |
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306 Veditor = s; |
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307 |
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308 return status; |
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309 } |
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310 |
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311 static int |
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312 exec_path (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 ("EXEC_PATH"); |
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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 ("EXEC_PATH"); |
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321 status = -1; |
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322 } |
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323 else |
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324 { |
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325 Vexec_path = s; |
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326 |
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327 string std_path = Vlocal_arch_lib_dir; |
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328 std_path.append (SEPCHAR_STR); |
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329 std_path.append (Varch_lib_dir); |
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330 std_path.append (SEPCHAR_STR); |
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331 std_path.append (Vbin_dir); |
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332 |
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333 int std_len = std_path.length (); |
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334 |
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335 static char *putenv_cmd = 0; |
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336 |
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337 delete [] putenv_cmd; |
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338 |
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339 putenv_cmd = 0; |
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340 |
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341 int eplen = Vexec_path.length (); |
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342 |
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343 if (eplen > 0) |
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344 { |
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345 int prepend = (Vexec_path[0] == ':'); |
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346 int append = (eplen > 1 && Vexec_path[eplen-1] == ':'); |
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347 |
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348 if (prepend) |
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349 { |
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350 if (append) |
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351 { |
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352 putenv_cmd = new char [2 * std_len + eplen + 6]; |
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353 sprintf (putenv_cmd, "PATH=%s%s%s", |
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354 std_path.c_str (), Vexec_path.c_str (), |
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355 std_path.c_str ()); |
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356 } |
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357 else |
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358 { |
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359 putenv_cmd = new char [std_len + eplen + 6]; |
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360 sprintf (putenv_cmd, "PATH=%s%s", |
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361 std_path.c_str (), Vexec_path.c_str ()); |
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362 } |
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363 } |
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364 else |
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365 { |
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366 if (append) |
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367 { |
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368 putenv_cmd = new char [std_len + eplen + 6]; |
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369 sprintf (putenv_cmd, "PATH=%s%s", |
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370 Vexec_path.c_str (), std_path.c_str ()); |
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371 } |
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372 else |
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373 { |
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374 putenv_cmd = new char [eplen + 6]; |
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375 sprintf (putenv_cmd, "PATH=%s", Vexec_path.c_str ()); |
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376 } |
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377 } |
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378 } |
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379 else |
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380 { |
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381 putenv_cmd = new char [std_len+6]; |
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382 sprintf (putenv_cmd, "PATH=%s", std_path.c_str ()); |
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383 } |
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384 |
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385 putenv (putenv_cmd); |
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386 } |
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387 |
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388 return status; |
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389 } |
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390 |
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391 static int |
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392 imagepath (void) |
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393 { |
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394 int status = 0; |
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395 |
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396 string s = builtin_string_variable ("IMAGEPATH"); |
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397 |
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398 if (s.empty ()) |
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399 { |
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400 gripe_invalid_value_specified ("IMAGEPATH"); |
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401 status = -1; |
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402 } |
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403 else |
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404 Vimagepath = s; |
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405 |
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406 return status; |
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407 } |
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408 |
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409 static int |
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410 loadpath (void) |
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411 { |
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412 int status = 0; |
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413 |
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414 string s = builtin_string_variable ("LOADPATH"); |
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415 |
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416 if (s.empty ()) |
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417 { |
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418 gripe_invalid_value_specified ("LOADPATH"); |
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419 status = -1; |
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420 } |
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421 else |
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422 Vload_path = maybe_add_default_load_path (s); |
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423 |
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424 return status; |
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425 } |
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426 |
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427 void |
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428 symbols_of_defaults (void) |
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429 { |
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430 DEFVAR (EDITOR, Veditor, 0, editor, |
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431 "name of the editor to be invoked by the edit_history command"); |
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432 |
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433 DEFVAR (EXEC_PATH, Vexec_path, 0, exec_path, |
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434 "colon separated list of directories to search for programs to run"); |
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435 |
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436 DEFVAR (LOADPATH, Vload_path, 0, loadpath, |
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437 "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 DEFCONSTX ("OCTAVE_VERSION", SBV_OCTAVE_VERSION, OCTAVE_VERSION, 0, 0, |
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443 "Octave version"); |
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444 } |
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445 |
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446 /* |
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447 ;;; Local Variables: *** |
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448 ;;; mode: C++ *** |
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449 ;;; End: *** |
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450 */ |
