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1 // user-prefs.cc -*- C++ -*- |
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2 /* |
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3 |
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4 Copyright (C) 1992, 1993, 1994 John W. Eaton |
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5 |
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6 This file is part of Octave. |
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7 |
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8 Octave is free software; you can redistribute it and/or modify it |
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9 under the terms of the GNU General Public License as published by the |
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10 Free Software Foundation; either version 2, or (at your option) any |
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11 later version. |
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12 |
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13 Octave is distributed in the hope that it will be useful, but WITHOUT |
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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16 for more details. |
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17 |
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18 You should have received a copy of the GNU General Public License |
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19 along with Octave; see the file COPYING. If not, write to the Free |
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20 Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. |
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21 |
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22 */ |
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23 |
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240
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24 #ifdef HAVE_CONFIG_H |
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25 #include "config.h" |
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26 #endif |
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27 |
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28 #include <string.h> |
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29 |
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30 #include "user-prefs.h" |
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31 #include "error.h" |
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32 #include "variables.h" |
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33 #include "utils.h" |
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34 |
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35 // The list of user preferences. Values change when global variables |
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36 // change, so we don\'t have to do a variable look up every time we |
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37 // need to check a preference. |
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38 user_preferences user_pref; |
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39 |
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40 /* |
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41 * Check the value of a string variable to see if it it\'s ok to do |
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42 * something. |
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43 * |
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44 * return of -1 => ok, but give me warning (default). |
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45 * return of 0 => always ok. |
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46 * return of 1 => never ok. |
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47 */ |
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48 static int |
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49 check_str_pref (char *var) |
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50 { |
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195
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51 char *val = builtin_string_variable (var); |
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52 int pref = -1; |
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529
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53 if (val) |
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54 { |
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55 if (strncmp (val, "yes", 3) == 0 |
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56 || strncmp (val, "true", 4) == 0) |
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57 pref = 1; |
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58 else if (strncmp (val, "never", 5) == 0 |
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59 || strncmp (val, "no", 2) == 0 |
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60 || strncmp (val, "false", 5) == 0) |
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61 pref = 0; |
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62 } |
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63 return pref; |
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64 } |
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65 |
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66 /* |
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430
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67 * Should commas be required to separate elements in a literal matrix |
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68 * list? |
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69 * |
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70 * user specifies value of pref |
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71 * -------------- ------------- |
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72 * "required" 2 |
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73 * "traditional" 1 |
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74 * anything else 0 |
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75 * |
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76 * Octave will never insert a comma in a literal matrix list if the |
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77 * user specifies "required". For example, the statement [1 2] will |
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78 * result in an error instead of being treated the same as [1, 2]. |
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79 * |
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80 * Traditional behavior makes Octave convert spaces to a comma between |
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81 * identifiers and `('. For example, the statement |
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82 * |
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83 * [eye (2)] |
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84 * |
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85 * will be parsed as |
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86 * |
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87 * [eye, (2)] |
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88 * |
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441
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89 * and will result in an error since the `eye' function will be |
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430
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90 * called with no arguments. To get around this, you would have to |
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91 * omit the space between `eye' and the `('. |
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92 * |
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93 * The default value is 0, which results in behavior that is the same |
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94 * as traditional, except that Octave does not convert spaces to a |
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95 * comma between identifiers and `('. For example, the statement |
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96 * |
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97 * [eye (2)] |
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98 * |
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441
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99 * will result in a call to `eye' with the argument `2'. |
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430
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100 */ |
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101 int |
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102 commas_in_literal_matrix (void) |
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103 { |
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104 int pref = 0; |
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105 char *val = builtin_string_variable ("commas_in_literal_matrix"); |
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529
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106 if (val) |
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107 { |
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108 if (strncmp (val, "required", 8) == 0) |
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109 pref = 2; |
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110 else if (strncmp (val, "traditional", 11) == 0) |
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111 pref = 1; |
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112 } |
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113 user_pref.commas_in_literal_matrix = pref; |
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114 return 0; |
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115 } |
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116 |
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117 /* |
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118 * Should we allow assignments like: |
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119 * |
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120 * octave> A(1) = 3; A(2) = 5 |
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121 * |
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122 * for A already defined and a matrix type? |
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123 */ |
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124 int |
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125 do_fortran_indexing (void) |
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126 { |
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127 user_pref.do_fortran_indexing = |
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128 check_str_pref ("do_fortran_indexing"); |
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129 |
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130 return 0; |
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131 } |
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132 |
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133 /* |
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134 * Should ignore empty elements in a matrix list (i.e., is an |
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135 * expression like `[[], 1]' ok? |
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136 */ |
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137 int |
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138 empty_list_elements_ok (void) |
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139 { |
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140 user_pref.empty_list_elements_ok = |
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141 check_str_pref ("empty_list_elements_ok"); |
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142 |
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143 return 0; |
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144 } |
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145 |
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146 /* |
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430
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147 * Should Octave always check to see if function files have changed |
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148 * since they were last compiled? |
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149 */ |
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150 int |
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151 ignore_function_time_stamp (void) |
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152 { |
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153 int pref = 0; |
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154 |
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155 char *val = builtin_string_variable ("ignore_function_time_stamp"); |
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156 |
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529
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157 if (val) |
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430
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158 { |
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159 if (strncmp (val, "all", 3) == 0) |
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160 pref = 2; |
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161 if (strncmp (val, "system", 6) == 0) |
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162 pref = 1; |
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163 } |
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164 |
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165 user_pref.ignore_function_time_stamp = pref; |
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166 |
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167 return 0; |
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168 } |
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169 |
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170 /* |
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171 * Should we allow things like: |
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172 * |
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173 * octave> 'abc' + 0 |
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174 * 97 98 99 |
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175 * |
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176 * to happen? |
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177 */ |
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178 int |
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179 implicit_str_to_num_ok (void) |
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180 { |
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181 user_pref.implicit_str_to_num_ok = |
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182 check_str_pref ("implicit_str_to_num_ok"); |
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183 |
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184 return 0; |
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185 } |
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186 |
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187 /* |
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188 * Should we allow silent conversion of complex to real when a real |
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189 * type is what we\'re really looking for? |
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190 */ |
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191 int |
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192 ok_to_lose_imaginary_part (void) |
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193 { |
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194 user_pref.ok_to_lose_imaginary_part = |
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195 check_str_pref ("ok_to_lose_imaginary_part"); |
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196 |
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197 return 0; |
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198 } |
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199 |
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200 /* |
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201 * If possible, send all output intended for the screen through the |
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202 * pager. |
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203 */ |
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204 int |
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205 page_screen_output (void) |
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206 { |
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207 user_pref.page_screen_output = check_str_pref ("page_screen_output"); |
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208 |
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209 return 0; |
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210 } |
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211 |
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212 /* |
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213 * When doing assignments like: |
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214 * |
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215 * octave> A(1) = 3; A(2) = 5 |
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216 * |
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217 * (for A undefined) should we build column vectors? Returning true |
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218 * only matters when resize_on_range_error is also true. |
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219 */ |
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220 int |
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221 prefer_column_vectors (void) |
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222 { |
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223 user_pref.prefer_column_vectors = |
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224 check_str_pref ("prefer_column_vectors"); |
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225 |
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226 return 0; |
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227 } |
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228 |
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229 /* |
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230 * For things like |
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231 * |
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232 * a = [2,3]; a([1,1]) |
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233 * |
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234 * return [2 3] instead of [2 2]. |
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235 */ |
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236 int |
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237 prefer_zero_one_indexing (void) |
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238 { |
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239 user_pref.prefer_zero_one_indexing = |
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240 check_str_pref ("prefer_zero_one_indexing"); |
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241 |
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242 return 0; |
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243 } |
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244 |
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245 /* |
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246 * Should we print things like |
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247 * |
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248 * octave> a = [1,2;3,4] |
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249 * a = |
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250 * |
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251 * 1 2 |
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252 * 3 4 |
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253 */ |
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254 int |
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255 print_answer_id_name (void) |
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256 { |
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257 user_pref.print_answer_id_name = |
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258 check_str_pref ("print_answer_id_name"); |
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259 |
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260 return 0; |
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261 } |
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262 |
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263 /* |
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264 * Should we also print the dimensions of empty matrices? |
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265 */ |
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266 int |
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267 print_empty_dimensions (void) |
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268 { |
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269 user_pref.print_empty_dimensions = |
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270 check_str_pref ("print_empty_dimensions"); |
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271 |
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272 return 0; |
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273 } |
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274 |
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275 /* |
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276 * Should operations on empty matrices return empty matrices or an |
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277 * error? |
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278 */ |
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279 int |
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280 propagate_empty_matrices (void) |
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281 { |
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282 user_pref.propagate_empty_matrices = |
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283 check_str_pref ("propagate_empty_matrices"); |
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284 |
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285 return 0; |
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286 } |
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287 |
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288 /* |
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289 * When doing assignments, should we resize matrices if the indices |
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290 * are outside the current bounds? |
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291 */ |
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292 int |
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293 resize_on_range_error (void) |
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294 { |
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295 user_pref.resize_on_range_error = |
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296 check_str_pref ("resize_on_range_error"); |
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297 |
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298 return 0; |
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299 } |
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300 |
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301 /* |
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302 * If a function does not return any values explicitly, return the |
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303 * last computed value. |
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304 */ |
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305 int |
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306 return_last_computed_value (void) |
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307 { |
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308 user_pref.return_last_computed_value = |
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309 check_str_pref ("return_last_computed_value"); |
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310 |
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311 return 0; |
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312 } |
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313 |
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314 /* |
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315 * Suppress printing results in called functions. |
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316 */ |
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317 int |
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318 silent_functions (void) |
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319 { |
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320 user_pref.silent_functions = |
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321 check_str_pref ("silent_functions"); |
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322 |
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323 return 0; |
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324 } |
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325 |
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326 /* |
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327 * Should should big matrices be split into smaller slices for output? |
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328 */ |
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329 int |
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330 split_long_rows (void) |
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331 { |
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332 user_pref.split_long_rows = check_str_pref ("split_long_rows"); |
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333 |
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334 return 0; |
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335 } |
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336 |
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337 /* |
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338 * Should things like: |
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339 * |
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340 * octave> ones (-1, 5) |
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341 * |
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342 * result in an empty matrix or an error? |
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343 */ |
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344 int |
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345 treat_neg_dim_as_zero (void) |
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346 { |
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347 user_pref.treat_neg_dim_as_zero = |
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348 check_str_pref ("treat_neg_dim_as_zero"); |
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349 |
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350 return 0; |
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351 } |
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352 |
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353 /* |
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430
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354 * Generate a warning for the assignment in things like |
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355 * |
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356 * octave> if (a = 2 < n) |
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357 * |
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358 * but not |
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359 * |
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360 * octave> if ((a = 2) < n) |
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361 */ |
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362 int |
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363 warn_assign_as_truth_value (void) |
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364 { |
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365 user_pref.warn_assign_as_truth_value = |
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366 check_str_pref ("warn_assign_as_truth_value"); |
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367 |
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368 return 0; |
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369 } |
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370 |
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371 /* |
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1
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372 * Generate a warning for the comma in things like |
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373 * |
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374 * octave> global a, b = 2 |
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375 */ |
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376 int |
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377 warn_comma_in_global_decl (void) |
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378 { |
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379 user_pref.warn_comma_in_global_decl = |
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380 check_str_pref ("warn_comma_in_global_decl"); |
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381 |
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382 return 0; |
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383 } |
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384 |
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385 /* |
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386 * On IEEE machines, allow divide by zero errors to be suppressed. |
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387 */ |
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388 int |
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389 warn_divide_by_zero (void) |
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390 { |
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391 user_pref.warn_divide_by_zero = check_str_pref ("warn_divide_by_zero"); |
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392 |
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393 return 0; |
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394 } |
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395 |
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396 int |
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397 set_output_max_field_width (void) |
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398 { |
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399 int status = 0; |
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400 |
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401 static int kludge = 0; |
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402 |
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403 double val; |
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195
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404 if (builtin_real_scalar_variable ("output_max_field_width", val) == 0) |
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1
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405 { |
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406 int ival = NINT (val); |
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407 if (ival > 0 && (double) ival == val) |
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408 { |
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409 user_pref.output_max_field_width= ival; |
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410 return status; |
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411 } |
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412 } |
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413 |
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414 if (kludge == 0) |
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415 kludge++; |
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416 else |
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417 { |
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418 warning ("invalid value specified for output_max_field_width"); |
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419 status = -1; |
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420 } |
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421 |
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422 return status; |
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423 } |
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424 |
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425 int |
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426 set_output_precision (void) |
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427 { |
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428 int status = 0; |
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429 |
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430 static int kludge = 0; |
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431 |
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432 double val; |
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195
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433 if (builtin_real_scalar_variable ("output_precision", val) == 0) |
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1
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434 { |
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435 int ival = NINT (val); |
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436 if (ival >= 0 && (double) ival == val) |
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437 { |
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438 user_pref.output_precision = ival; |
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439 return status; |
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440 } |
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441 } |
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442 |
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443 if (kludge == 0) |
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444 kludge++; |
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445 else |
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446 { |
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447 warning ("invalid value specified for output_precision"); |
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448 status = -1; |
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449 } |
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450 |
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451 return status; |
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452 } |
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453 |
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454 int |
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455 set_save_precision (void) |
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456 { |
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457 int status = 0; |
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458 |
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459 static int kludge = 0; |
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460 |
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461 double val; |
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462 if (builtin_real_scalar_variable ("save_precision", val) == 0) |
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463 { |
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464 int ival = NINT (val); |
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465 if (ival >= 0 && (double) ival == val) |
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466 { |
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467 user_pref.save_precision = ival; |
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468 return status; |
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469 } |
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470 } |
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471 |
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472 if (kludge == 0) |
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473 kludge++; |
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474 else |
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475 { |
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476 warning ("invalid value specified for save_precision"); |
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477 status = -1; |
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478 } |
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479 |
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480 return status; |
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481 } |
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482 |
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483 int |
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430
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484 sv_editor (void) |
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1
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485 { |
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486 int status = 0; |
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487 |
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430
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488 char *s = builtin_string_variable ("EDITOR"); |
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529
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489 if (s) |
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1
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490 { |
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430
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491 delete [] user_pref.editor; |
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492 user_pref.editor = s; |
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1
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493 } |
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494 else |
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495 { |
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430
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496 warning ("invalid value specified for EDITOR"); |
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497 status = -1; |
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498 } |
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499 |
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500 return status; |
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501 } |
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502 |
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503 int |
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605
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504 sv_default_save_format (void) |
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505 { |
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506 int status = 0; |
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507 |
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508 char *s = builtin_string_variable ("default_save_format"); |
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509 if (s) |
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510 { |
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511 delete [] user_pref.default_save_format; |
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512 user_pref.default_save_format = s; |
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513 } |
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514 else |
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515 { |
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516 warning ("invalid value specified for default_save_format"); |
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517 status = -1; |
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518 } |
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519 |
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520 return status; |
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521 } |
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522 |
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523 int |
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430
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524 sv_gnuplot_binary (void) |
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525 { |
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526 int status = 0; |
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527 |
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528 char *s = builtin_string_variable ("gnuplot_binary"); |
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529
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529 if (s) |
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430
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530 { |
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531 delete [] user_pref.gnuplot_binary; |
|
|
532 user_pref.gnuplot_binary = s; |
|
|
533 } |
|
|
534 else |
|
|
535 { |
|
|
536 warning ("invalid value specified for gnuplot_binary"); |
|
1
|
537 status = -1; |
|
|
538 } |
|
|
539 |
|
|
540 return status; |
|
|
541 } |
|
|
542 |
|
|
543 int |
|
186
|
544 sv_info_file (void) |
|
|
545 { |
|
|
546 int status = 0; |
|
|
547 |
|
195
|
548 char *s = builtin_string_variable ("INFO_FILE"); |
|
529
|
549 if (s) |
|
186
|
550 { |
|
|
551 delete [] user_pref.info_file; |
|
|
552 user_pref.info_file = s; |
|
|
553 } |
|
|
554 else |
|
|
555 { |
|
|
556 warning ("invalid value specified for INFO_FILE"); |
|
|
557 status = -1; |
|
|
558 } |
|
|
559 |
|
|
560 return status; |
|
|
561 } |
|
|
562 |
|
|
563 int |
|
430
|
564 sv_loadpath (void) |
|
195
|
565 { |
|
|
566 int status = 0; |
|
|
567 |
|
430
|
568 char *s = builtin_string_variable ("LOADPATH"); |
|
529
|
569 if (s) |
|
195
|
570 { |
|
430
|
571 delete [] user_pref.loadpath; |
|
|
572 user_pref.loadpath = s; |
|
195
|
573 } |
|
|
574 else |
|
|
575 { |
|
430
|
576 warning ("invalid value specified for LOADPATH"); |
|
|
577 status = -1; |
|
|
578 } |
|
|
579 |
|
|
580 return status; |
|
|
581 } |
|
|
582 |
|
|
583 int |
|
|
584 sv_pager_binary (void) |
|
|
585 { |
|
|
586 int status = 0; |
|
|
587 |
|
|
588 char *s = builtin_string_variable ("PAGER"); |
|
529
|
589 if (s) |
|
430
|
590 { |
|
|
591 delete [] user_pref.pager_binary; |
|
|
592 user_pref.pager_binary = s; |
|
|
593 } |
|
|
594 else |
|
|
595 { |
|
|
596 warning ("invalid value specified for PAGER"); |
|
195
|
597 status = -1; |
|
|
598 } |
|
|
599 |
|
|
600 return status; |
|
|
601 } |
|
|
602 |
|
|
603 int |
|
1
|
604 sv_ps1 (void) |
|
|
605 { |
|
|
606 int status = 0; |
|
|
607 |
|
195
|
608 char *s = builtin_string_variable ("PS1"); |
|
529
|
609 if (s) |
|
1
|
610 { |
|
|
611 delete [] user_pref.ps1; |
|
|
612 user_pref.ps1 = s; |
|
|
613 } |
|
|
614 else |
|
|
615 { |
|
|
616 warning ("invalid value specified for PS1"); |
|
|
617 status = -1; |
|
|
618 } |
|
|
619 |
|
|
620 return status; |
|
|
621 } |
|
|
622 |
|
|
623 int |
|
|
624 sv_ps2 (void) |
|
|
625 { |
|
|
626 int status = 0; |
|
|
627 |
|
195
|
628 char *s = builtin_string_variable ("PS2"); |
|
529
|
629 if (s) |
|
1
|
630 { |
|
|
631 delete [] user_pref.ps2; |
|
|
632 user_pref.ps2 = s; |
|
|
633 } |
|
|
634 else |
|
|
635 { |
|
|
636 warning ("invalid value specified for PS2"); |
|
|
637 status = -1; |
|
|
638 } |
|
|
639 |
|
|
640 return status; |
|
|
641 } |
|
|
642 |
|
|
643 int |
|
|
644 sv_pwd (void) |
|
|
645 { |
|
|
646 int status = 0; |
|
|
647 |
|
195
|
648 char *s = builtin_string_variable ("PWD"); |
|
529
|
649 if (s) |
|
1
|
650 { |
|
|
651 delete [] user_pref.pwd; |
|
|
652 user_pref.pwd = s; |
|
|
653 } |
|
|
654 else |
|
|
655 { |
|
|
656 warning ("invalid value specified for PWD"); |
|
|
657 status = -1; |
|
|
658 } |
|
|
659 |
|
|
660 return status; |
|
|
661 } |
|
|
662 |
|
|
663 /* |
|
|
664 ;;; Local Variables: *** |
|
|
665 ;;; mode: C++ *** |
|
|
666 ;;; page-delimiter: "^/\\*" *** |
|
|
667 ;;; End: *** |
|
|
668 */ |
