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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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2442
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42 #ifdef HAVE_SYS_TYPES_H |
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43 #include <sys/types.h> |
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44 #endif |
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45 #include <unistd.h> |
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46 #endif |
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47 |
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48 #include "defaults.h" |
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49 #include "defun.h" |
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50 #include "error.h" |
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51 #include "gripes.h" |
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52 #include "help.h" |
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53 #include "ov.h" |
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54 #include "toplev.h" |
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55 #include "variables.h" |
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56 #include "version.h" |
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57 |
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58 string Voctave_home; |
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59 |
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60 string Vbin_dir; |
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61 string Vlib_dir; |
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62 string Vinfo_dir; |
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63 string Varch_lib_dir; |
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64 string Vlocal_arch_lib_dir; |
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65 string Vfcn_file_dir; |
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66 |
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67 // The path that will be searched for programs that we execute. |
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68 // (--exec-path path) |
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69 string Vexec_path; |
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70 |
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71 // Load path specified on command line. |
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72 // (--path path; -p path) |
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73 string Vload_path; |
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74 |
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75 // Name of the editor to be invoked by the edit_history command. |
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76 string Veditor; |
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77 |
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78 string Vimagepath; |
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79 |
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80 string Vlocal_site_defaults_file; |
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81 string Vsite_defaults_file; |
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82 |
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83 static string |
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84 subst_octave_home (const string& s) |
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85 { |
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86 string retval; |
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87 |
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88 string prefix = OCTAVE_PREFIX; |
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89 |
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90 retval = s; |
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91 |
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92 if (Voctave_home != prefix) |
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93 { |
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94 int len = prefix.length (); |
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95 size_t start = 0; |
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96 while ((start = retval.find (prefix)) != NPOS) |
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97 { |
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98 retval.replace (start, len, Voctave_home); |
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99 start++; |
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100 } |
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101 } |
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102 |
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103 return retval; |
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104 } |
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105 |
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106 static void |
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107 set_octave_home (void) |
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108 { |
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109 char *oh = getenv ("OCTAVE_HOME"); |
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110 |
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111 Voctave_home = oh ? string (oh) : string (OCTAVE_PREFIX); |
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112 } |
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113 |
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114 static void |
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115 set_default_info_dir (void) |
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116 { |
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117 Vinfo_dir = subst_octave_home (OCTAVE_INFODIR); |
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118 } |
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119 |
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120 static void |
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121 set_default_arch_lib_dir (void) |
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122 { |
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123 Varch_lib_dir = subst_octave_home (OCTAVE_ARCHLIBDIR); |
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124 } |
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125 |
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126 static void |
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127 set_default_local_arch_lib_dir (void) |
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128 { |
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129 Vlocal_arch_lib_dir = subst_octave_home (OCTAVE_LOCALARCHLIBDIR); |
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130 } |
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131 |
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132 static void |
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133 set_default_fcn_file_dir (void) |
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134 { |
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135 Vfcn_file_dir = subst_octave_home (OCTAVE_FCNFILEDIR); |
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136 } |
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137 |
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138 static void |
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139 set_default_bin_dir (void) |
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140 { |
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141 Vbin_dir = subst_octave_home (OCTAVE_BINDIR); |
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142 } |
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143 |
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144 static void |
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145 set_default_lib_dir (void) |
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146 { |
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147 Vlib_dir = subst_octave_home (OCTAVE_LIBDIR); |
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148 } |
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149 |
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150 static void |
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151 set_default_exec_path (void) |
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152 { |
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153 char *octave_exec_path = getenv ("OCTAVE_EXEC_PATH"); |
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154 |
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155 if (octave_exec_path) |
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156 Vexec_path = string (octave_exec_path); |
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157 else |
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158 { |
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159 char *shell_path = getenv ("PATH"); |
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160 |
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161 if (shell_path) |
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162 { |
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163 Vexec_path = string (":"); |
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164 Vexec_path.append (shell_path); |
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165 } |
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166 } |
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167 } |
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168 |
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169 // Handle OCTAVE_PATH from the environment like TeX handles TEXINPUTS. |
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170 // If the path starts with `:', prepend the standard path. If it ends |
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171 // with `:' append the standard path. If it begins and ends with |
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172 // `:', do both (which is useless, but the luser asked for it...). |
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173 |
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174 static void |
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175 set_default_path (void) |
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176 { |
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177 string std_path = subst_octave_home (OCTAVE_FCNFILEPATH); |
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178 |
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179 char *oct_path = getenv ("OCTAVE_PATH"); |
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180 |
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181 Vload_path = oct_path ? string (oct_path) : std_path; |
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182 } |
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183 |
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184 static void |
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185 set_default_info_file (void) |
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186 { |
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187 char *oct_info_file = getenv ("OCTAVE_INFO_FILE"); |
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188 |
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189 if (oct_info_file) |
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190 Vinfo_file = string (oct_info_file); |
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191 else |
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192 { |
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193 Vinfo_file = Vinfo_dir; |
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194 Vinfo_file.append ("/octave.info"); |
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195 } |
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196 } |
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197 |
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198 static void |
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199 set_default_info_prog (void) |
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200 { |
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201 char *oct_info_prog = getenv ("OCTAVE_INFO_PROGRAM"); |
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202 |
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203 if (oct_info_prog) |
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204 Vinfo_prog = string (oct_info_prog); |
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205 else |
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206 { |
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207 Vinfo_prog = Varch_lib_dir; |
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208 Vinfo_prog.append ("/info"); |
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209 } |
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210 } |
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211 |
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212 static void |
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213 set_default_editor (void) |
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214 { |
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215 Veditor = "vi"; |
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216 |
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217 char *env_editor = getenv ("EDITOR"); |
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218 |
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219 if (env_editor && *env_editor) |
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220 Veditor = string (env_editor); |
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221 } |
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222 |
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223 static void |
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224 set_local_site_defaults_file (void) |
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225 { |
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226 Vlocal_site_defaults_file = subst_octave_home (OCTAVE_LOCALSTARTUPFILEDIR); |
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227 Vlocal_site_defaults_file.append ("/octaverc"); |
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228 } |
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229 |
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230 static void |
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231 set_site_defaults_file (void) |
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232 { |
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233 Vsite_defaults_file = subst_octave_home (OCTAVE_STARTUPFILEDIR); |
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234 Vsite_defaults_file.append ("/octaverc"); |
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235 } |
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236 |
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237 string |
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238 maybe_add_default_load_path (const string& pathstring) |
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239 { |
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240 string std_path = subst_octave_home (OCTAVE_FCNFILEPATH); |
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241 |
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242 string retval; |
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243 |
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244 if (! pathstring.empty ()) |
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245 { |
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246 if (pathstring[0] == SEPCHAR) |
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247 { |
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248 retval = std_path; |
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249 retval.append (pathstring); |
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250 } |
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251 else |
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252 retval = pathstring; |
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253 |
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254 if (pathstring[pathstring.length () - 1] == SEPCHAR) |
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255 retval.append (std_path); |
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256 } |
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257 |
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258 return retval; |
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259 } |
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260 |
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261 void |
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262 install_defaults (void) |
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263 { |
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264 // OCTAVE_HOME must be set first! |
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265 |
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266 set_octave_home (); |
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267 |
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268 set_default_info_dir (); |
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269 |
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270 set_default_arch_lib_dir (); |
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271 |
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272 set_default_local_arch_lib_dir (); |
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273 |
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274 set_default_fcn_file_dir (); |
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275 |
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276 set_default_bin_dir (); |
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277 |
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278 set_default_lib_dir (); |
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279 |
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280 set_default_exec_path (); |
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281 |
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282 set_default_path (); |
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283 |
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284 set_default_info_file (); |
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285 |
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286 set_default_info_prog (); |
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287 |
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288 set_default_editor (); |
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289 |
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290 set_local_site_defaults_file (); |
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291 |
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292 set_site_defaults_file (); |
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293 } |
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294 |
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295 static int |
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296 editor (void) |
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297 { |
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298 int status = 0; |
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299 |
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300 string s = builtin_string_variable ("EDITOR"); |
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301 |
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302 if (s.empty ()) |
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303 { |
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304 gripe_invalid_value_specified ("EDITOR"); |
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305 status = -1; |
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306 } |
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307 else |
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308 Veditor = s; |
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309 |
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310 return status; |
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311 } |
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312 |
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313 static int |
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314 exec_path (void) |
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315 { |
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316 int status = 0; |
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317 |
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318 string s = builtin_string_variable ("EXEC_PATH"); |
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319 |
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320 if (s.empty ()) |
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321 { |
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322 gripe_invalid_value_specified ("EXEC_PATH"); |
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323 status = -1; |
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324 } |
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325 else |
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326 { |
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327 Vexec_path = s; |
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328 |
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329 string std_path = Vlocal_arch_lib_dir; |
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330 std_path.append (SEPCHAR_STR); |
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331 std_path.append (Varch_lib_dir); |
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332 std_path.append (SEPCHAR_STR); |
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333 std_path.append (Vbin_dir); |
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334 |
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335 int std_len = std_path.length (); |
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336 |
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337 static char *putenv_cmd = 0; |
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338 |
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339 delete [] putenv_cmd; |
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340 |
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341 putenv_cmd = 0; |
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342 |
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343 int eplen = Vexec_path.length (); |
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344 |
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345 if (eplen > 0) |
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346 { |
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347 int prepend = (Vexec_path[0] == ':'); |
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348 int append = (eplen > 1 && Vexec_path[eplen-1] == ':'); |
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349 |
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350 if (prepend) |
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351 { |
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352 if (append) |
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353 { |
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354 putenv_cmd = new char [2 * std_len + eplen + 6]; |
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355 sprintf (putenv_cmd, "PATH=%s%s%s", |
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356 std_path.c_str (), Vexec_path.c_str (), |
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357 std_path.c_str ()); |
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358 } |
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359 else |
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360 { |
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361 putenv_cmd = new char [std_len + eplen + 6]; |
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362 sprintf (putenv_cmd, "PATH=%s%s", |
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363 std_path.c_str (), Vexec_path.c_str ()); |
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364 } |
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365 } |
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366 else |
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367 { |
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368 if (append) |
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369 { |
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370 putenv_cmd = new char [std_len + eplen + 6]; |
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371 sprintf (putenv_cmd, "PATH=%s%s", |
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372 Vexec_path.c_str (), std_path.c_str ()); |
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373 } |
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374 else |
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375 { |
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376 putenv_cmd = new char [eplen + 6]; |
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377 sprintf (putenv_cmd, "PATH=%s", Vexec_path.c_str ()); |
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378 } |
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379 } |
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380 } |
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381 else |
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382 { |
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383 putenv_cmd = new char [std_len+6]; |
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384 sprintf (putenv_cmd, "PATH=%s", std_path.c_str ()); |
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385 } |
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386 |
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387 putenv (putenv_cmd); |
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388 } |
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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 static int |
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394 imagepath (void) |
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395 { |
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396 int status = 0; |
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397 |
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398 string s = builtin_string_variable ("IMAGEPATH"); |
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399 |
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400 if (s.empty ()) |
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401 { |
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402 gripe_invalid_value_specified ("IMAGEPATH"); |
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403 status = -1; |
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404 } |
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405 else |
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406 Vimagepath = s; |
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407 |
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408 return status; |
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409 } |
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410 |
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411 static int |
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412 loadpath (void) |
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413 { |
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414 int status = 0; |
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415 |
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416 string s = builtin_string_variable ("LOADPATH"); |
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417 |
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418 if (s.empty ()) |
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419 { |
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420 gripe_invalid_value_specified ("LOADPATH"); |
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421 status = -1; |
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422 } |
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423 else |
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424 Vload_path = maybe_add_default_load_path (s); |
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425 |
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426 return status; |
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427 } |
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428 |
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429 void |
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430 symbols_of_defaults (void) |
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431 { |
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432 DEFVAR (EDITOR, Veditor, 0, editor, |
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433 "name of the editor to be invoked by the edit_history command"); |
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434 |
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435 DEFVAR (EXEC_PATH, Vexec_path, 0, exec_path, |
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436 "colon separated list of directories to search for programs to run"); |
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437 |
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438 DEFVAR (LOADPATH, Vload_path, 0, loadpath, |
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439 "colon separated list of directories to search for scripts"); |
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440 |
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441 DEFVAR (IMAGEPATH, OCTAVE_IMAGEPATH, 0, imagepath, |
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442 "colon separated list of directories to search for image files"); |
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443 |
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444 DEFCONSTX ("OCTAVE_VERSION", SBV_OCTAVE_VERSION, OCTAVE_VERSION, 0, 0, |
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445 "Octave version"); |
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446 } |
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447 |
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448 /* |
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449 ;;; Local Variables: *** |
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450 ;;; mode: C++ *** |
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451 ;;; End: *** |
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452 */ |
