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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 <cstdlib> |
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36 |
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37 #include <string> |
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38 |
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39 #ifdef HAVE_UNISTD_H |
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40 #include <sys/types.h> |
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41 #include <unistd.h> |
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42 #endif |
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43 |
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44 #include "defaults.h" |
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45 #include "defun.h" |
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46 #include "error.h" |
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47 #include "gripes.h" |
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48 #include "help.h" |
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2390
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49 #include "ov.h" |
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2203
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50 #include "toplev.h" |
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51 #include "variables.h" |
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52 #include "version.h" |
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53 |
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54 string Voctave_home; |
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55 |
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56 string Vbin_dir; |
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57 string Vlib_dir; |
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58 string Vinfo_dir; |
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59 string Varch_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 = s.find (prefix)) != NPOS) |
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92 { |
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93 retval.replace (start, len, Voctave_home); |
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94 start++; |
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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 char *oh = getenv ("OCTAVE_HOME"); |
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105 |
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106 Voctave_home = oh ? string (oh) : string (OCTAVE_PREFIX); |
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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_fcn_file_dir (void) |
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123 { |
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124 Vfcn_file_dir = subst_octave_home (OCTAVE_FCNFILEDIR); |
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125 } |
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126 |
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127 static void |
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128 set_default_bin_dir (void) |
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129 { |
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130 Vbin_dir = subst_octave_home (OCTAVE_BINDIR); |
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131 } |
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132 |
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133 static void |
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134 set_default_lib_dir (void) |
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135 { |
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136 Vlib_dir = subst_octave_home (OCTAVE_LIBDIR); |
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137 } |
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138 |
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139 static void |
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140 set_default_exec_path (void) |
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141 { |
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142 char *octave_exec_path = getenv ("OCTAVE_EXEC_PATH"); |
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143 |
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144 if (octave_exec_path) |
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145 Vexec_path = string (octave_exec_path); |
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146 else |
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147 { |
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148 char *shell_path = getenv ("PATH"); |
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149 |
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150 if (shell_path) |
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151 { |
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152 Vexec_path = string (":"); |
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153 Vexec_path.append (shell_path); |
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154 } |
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155 } |
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156 } |
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157 |
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158 // Handle OCTAVE_PATH from the environment like TeX handles TEXINPUTS. |
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159 // If the path starts with `:', prepend the standard path. If it ends |
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160 // with `:' append the standard path. If it begins and ends with |
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161 // `:', do both (which is useless, but the luser asked for it...). |
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162 |
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163 static void |
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164 set_default_path (void) |
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165 { |
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166 string std_path = subst_octave_home (OCTAVE_FCNFILEPATH); |
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167 |
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168 char *oct_path = getenv ("OCTAVE_PATH"); |
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169 |
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170 Vload_path = oct_path ? string (oct_path) : std_path; |
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171 } |
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172 |
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173 static void |
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174 set_default_info_file (void) |
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175 { |
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176 char *oct_info_file = getenv ("OCTAVE_INFO_FILE"); |
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177 |
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178 if (oct_info_file) |
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179 Vinfo_file = string (oct_info_file); |
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180 else |
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181 { |
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182 Vinfo_file = Vinfo_dir; |
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183 Vinfo_file.append ("/octave.info"); |
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184 } |
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185 } |
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186 |
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187 static void |
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188 set_default_info_prog (void) |
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189 { |
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190 char *oct_info_prog = getenv ("OCTAVE_INFO_PROGRAM"); |
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191 |
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192 if (oct_info_prog) |
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193 Vinfo_prog = string (oct_info_prog); |
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194 else |
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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 } |
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200 |
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201 static void |
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202 set_default_editor (void) |
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203 { |
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204 Veditor = "vi"; |
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205 |
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206 char *env_editor = getenv ("EDITOR"); |
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207 |
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208 if (env_editor && *env_editor) |
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209 Veditor = string (env_editor); |
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210 } |
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211 |
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212 static void |
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213 set_local_site_defaults_file (void) |
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214 { |
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215 Vlocal_site_defaults_file = subst_octave_home (OCTAVE_LOCALSTARTUPFILEDIR); |
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216 Vlocal_site_defaults_file.append ("/octaverc"); |
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217 } |
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218 |
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219 static void |
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220 set_site_defaults_file (void) |
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221 { |
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222 Vsite_defaults_file = subst_octave_home (OCTAVE_STARTUPFILEDIR); |
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223 Vsite_defaults_file.append ("/octaverc"); |
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224 } |
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225 |
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226 string |
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227 maybe_add_default_load_path (const string& pathstring) |
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228 { |
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229 string std_path = subst_octave_home (OCTAVE_FCNFILEPATH); |
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230 |
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231 string retval; |
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232 |
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233 if (! pathstring.empty ()) |
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234 { |
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235 if (pathstring[0] == SEPCHAR) |
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236 { |
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237 retval = std_path; |
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238 retval.append (pathstring); |
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239 } |
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240 else |
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241 retval = pathstring; |
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242 |
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243 if (pathstring[pathstring.length () - 1] == SEPCHAR) |
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244 retval.append (std_path); |
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245 } |
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246 |
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247 return retval; |
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248 } |
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249 |
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250 void |
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251 install_defaults (void) |
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252 { |
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253 // OCTAVE_HOME must be set first! |
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254 |
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255 set_octave_home (); |
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256 |
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257 set_default_info_dir (); |
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258 |
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259 set_default_arch_lib_dir (); |
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260 |
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261 set_default_fcn_file_dir (); |
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262 |
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263 set_default_bin_dir (); |
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264 |
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265 set_default_lib_dir (); |
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266 |
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267 set_default_exec_path (); |
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268 |
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269 set_default_path (); |
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270 |
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271 set_default_info_file (); |
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272 |
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273 set_default_info_prog (); |
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274 |
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275 set_default_editor (); |
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276 |
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277 set_local_site_defaults_file (); |
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278 |
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279 set_site_defaults_file (); |
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280 } |
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281 |
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282 static int |
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283 editor (void) |
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284 { |
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285 int status = 0; |
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286 |
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287 string s = builtin_string_variable ("EDITOR"); |
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288 |
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289 if (s.empty ()) |
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290 { |
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291 gripe_invalid_value_specified ("EDITOR"); |
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292 status = -1; |
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293 } |
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294 else |
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295 Veditor = s; |
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296 |
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297 return status; |
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298 } |
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299 |
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300 static int |
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301 exec_path (void) |
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302 { |
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303 int status = 0; |
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304 |
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305 if (Vexec_path.empty ()) |
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306 { |
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307 gripe_invalid_value_specified ("EXEC_PATH"); |
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308 status = -1; |
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309 } |
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310 else |
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311 { |
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312 int len = Varch_lib_dir.length () + Vbin_dir.length () |
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313 + strlen (SEPCHAR_STR); |
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314 |
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315 static char *putenv_cmd = 0; |
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316 |
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317 delete [] putenv_cmd; |
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318 |
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319 putenv_cmd = 0; |
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320 |
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321 int eplen = Vexec_path.length (); |
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322 |
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323 if (eplen > 0) |
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324 { |
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325 int prepend = (Vexec_path[0] == ':'); |
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326 int append = (eplen > 1 && Vexec_path[eplen-1] == ':'); |
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327 |
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328 if (prepend) |
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329 { |
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330 if (append) |
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331 { |
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332 putenv_cmd = new char [2 * len + eplen + 6]; |
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333 sprintf (putenv_cmd, |
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334 "PATH=%s" SEPCHAR_STR "%s%s%s" SEPCHAR_STR "%s", |
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335 Varch_lib_dir.c_str (), Vbin_dir.c_str (), |
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336 Vexec_path.c_str (), Varch_lib_dir.c_str (), |
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337 Vbin_dir.c_str ()); |
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338 } |
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339 else |
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340 { |
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341 putenv_cmd = new char [len + eplen + 6]; |
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342 sprintf (putenv_cmd, |
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343 "PATH=%s" SEPCHAR_STR "%s%s", |
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344 Varch_lib_dir.c_str (), Vbin_dir.c_str (), |
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345 Vexec_path.c_str ()); |
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346 } |
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347 } |
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348 else |
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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 [len + eplen + 6]; |
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353 sprintf (putenv_cmd, |
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354 "PATH=%s%s" SEPCHAR_STR "%s", |
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355 Vexec_path.c_str (), Varch_lib_dir.c_str (), |
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356 Vbin_dir.c_str ()); |
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357 } |
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358 else |
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359 { |
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360 putenv_cmd = new char [len + eplen + 6]; |
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361 sprintf (putenv_cmd, "PATH=%s", Vexec_path.c_str ()); |
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362 } |
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363 } |
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364 } |
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365 else |
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366 { |
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367 putenv_cmd = new char [len+6]; |
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368 sprintf (putenv_cmd, "PATH=%s" SEPCHAR_STR "%s", |
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369 Varch_lib_dir.c_str (), Vbin_dir.c_str ()); |
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370 } |
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371 |
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372 putenv (putenv_cmd); |
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373 } |
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374 |
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375 return status; |
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376 } |
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377 |
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378 static int |
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379 imagepath (void) |
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380 { |
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381 int status = 0; |
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382 |
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383 string s = builtin_string_variable ("IMAGEPATH"); |
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384 |
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385 if (s.empty ()) |
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386 { |
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387 gripe_invalid_value_specified ("IMAGEPATH"); |
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388 status = -1; |
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389 } |
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390 else |
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391 Vimagepath = s; |
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392 |
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393 return status; |
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394 } |
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395 |
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396 static int |
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397 loadpath (void) |
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398 { |
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399 int status = 0; |
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400 |
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401 string s = builtin_string_variable ("LOADPATH"); |
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402 |
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403 if (s.empty ()) |
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404 { |
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405 gripe_invalid_value_specified ("LOADPATH"); |
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406 status = -1; |
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407 } |
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408 else |
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409 Vload_path = maybe_add_default_load_path (s); |
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410 |
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411 return status; |
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412 } |
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413 |
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414 void |
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415 symbols_of_defaults (void) |
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416 { |
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417 DEFVAR (EDITOR, Veditor, 0, editor, |
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418 "name of the editor to be invoked by the edit_history command"); |
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419 |
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420 DEFVAR (EXEC_PATH, Vexec_path, 0, exec_path, |
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421 "colon separated list of directories to search for programs to run"); |
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422 |
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423 DEFVAR (LOADPATH, Vload_path, 0, loadpath, |
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424 "colon separated list of directories to search for scripts"); |
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425 |
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426 DEFVAR (IMAGEPATH, OCTAVE_IMAGEPATH, 0, imagepath, |
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427 "colon separated list of directories to search for image files"); |
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428 |
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429 DEFCONSTX ("OCTAVE_VERSION", SBV_OCTAVE_VERSION, OCTAVE_VERSION, 0, 0, |
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430 "Octave version"); |
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431 } |
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432 |
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433 /* |
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434 ;;; Local Variables: *** |
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435 ;;; mode: C++ *** |
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436 ;;; End: *** |
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437 */ |
