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1 /* |
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2 |
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1884
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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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240
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23 #ifdef HAVE_CONFIG_H |
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1192
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24 #include <config.h> |
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25 #endif |
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26 |
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1343
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27 #include <csignal> |
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28 #include <cstdlib> |
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29 #include <cstring> |
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30 |
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1755
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31 #include <string> |
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32 |
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1350
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33 #include <iostream.h> |
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34 #include <strstream.h> |
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35 |
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36 #ifdef HAVE_UNISTD_H |
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37 #include <sys/types.h> |
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38 #include <unistd.h> |
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39 #endif |
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40 |
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41 #include "str-vec.h" |
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42 |
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2202
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43 #include "defaults.h" |
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1352
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44 #include "defun.h" |
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45 #include "dirfns.h" |
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46 #include "error.h" |
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2202
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47 #include "gripes.h" |
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48 #include "help.h" |
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2177
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49 #include "input.h" |
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1755
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50 #include "oct-obj.h" |
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51 #include "pager.h" |
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1466
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52 #include "pathsearch.h" |
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1755
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53 #include "pt-const.h" |
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54 #include "pt-exp.h" |
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2124
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55 #include "pt-pr-code.h" |
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529
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56 #include "sighandlers.h" |
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57 #include "symtab.h" |
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1755
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58 #include "toplev.h" |
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1588
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59 #include "unwind-prot.h" |
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242
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60 #include "utils.h" |
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61 #include "variables.h" |
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62 |
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63 // Name of the info file specified on command line. |
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64 // (--info-file file) |
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65 string Vinfo_file; |
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66 |
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67 // Name of the info reader we'd like to use. |
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68 // (--info-program program) |
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69 string Vinfo_prog; |
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70 |
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2189
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71 // If TRUE, don't print additional help message in help and usage |
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72 // functions. |
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73 static bool Vsuppress_verbose_help_message; |
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74 |
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75 static help_list operators[] = |
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76 { |
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77 { "!", |
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78 "Logical not operator. See also `~'.\n", }, |
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79 |
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80 { "!=", |
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81 "Logical not equals operator. See also `~' and `<>'.\n", }, |
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82 |
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83 { "\"", |
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84 "String delimiter.\n", }, |
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85 |
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86 { "#", |
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87 "Begin comment character. See also `%'.", }, |
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88 |
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89 { "%", |
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90 "Begin comment charcter. See also `#'.", }, |
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91 |
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92 { "&", |
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928
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93 "Logical and operator. See also `&&'.", }, |
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94 |
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95 { "&&", |
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96 "Logical and operator. See also `&'.", }, |
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97 |
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98 { "'", |
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99 "Matrix transpose operator. For complex matrices, computes the\n\ |
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100 complex conjugate (Hermitian) transpose. See also `.''\n\ |
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101 \n\ |
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102 The single quote character may also be used to delimit strings, but\n\ |
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103 it is better to use the double quote character, since that is never\n\ |
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104 ambiguous", }, |
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105 |
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106 { "(", |
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928
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107 "Array index or function argument delimiter.", }, |
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108 |
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109 { ")", |
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928
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110 "Array index or function argument delimiter.", }, |
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111 |
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112 { "*", |
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928
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113 "Multiplication operator. See also `.*'", }, |
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114 |
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115 { "**", |
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928
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116 "Power operator. See also `^', `.**', and `.^'", }, |
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117 |
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118 { "+", |
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119 "Addition operator.", }, |
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120 |
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121 { "++", |
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928
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122 "Increment operator. As in C, may be applied as a prefix or postfix operator.", }, |
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123 |
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124 { ",", |
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928
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125 "Array index, function argument, or command separator.", }, |
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126 |
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127 { "-", |
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128 "Subtraction or unary negation operator.", }, |
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129 |
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130 { "--", |
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131 "Decrement operator. As in C, may be applied as a prefix or postfix operator.", }, |
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132 |
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133 { ".'", |
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134 "Matrix transpose operator. For complex matrices, computes the\n\ |
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135 transpose, *not* the complex conjugate transpose. See also `''.", }, |
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136 |
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137 { ".*", |
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928
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138 "Element by element multiplication operator. See also `*'.", }, |
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139 |
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140 { ".**", |
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928
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141 "Element by element power operator. See also `**', `^', and `.^'.", }, |
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142 |
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143 { "./", |
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928
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144 "Element by element division operator. See also `/' and `\\'.", }, |
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145 |
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146 { ".^", |
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928
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147 "Element by element power operator. See also `**', `^', and `.^'.", }, |
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148 |
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149 { "/", |
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150 "Right division. See also `\\' and `./'.", }, |
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151 |
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152 { ":", |
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153 "Select entire rows or columns of matrices.", }, |
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154 |
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155 { ";", |
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156 "Array row or command separator. See also `,'.", }, |
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157 |
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158 { "<", |
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159 "Less than operator.", }, |
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160 |
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161 { "<=", |
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928
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162 "Less than or equals operator.", }, |
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163 |
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164 { "<>", |
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928
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165 "Logical not equals operator. See also `!=' and `~='.", }, |
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166 |
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167 { "=", |
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928
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168 "Assignment operator.", }, |
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169 |
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170 { "==", |
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171 "Equality test operator.", }, |
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172 |
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173 { ">", |
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174 "Greater than operator.", }, |
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175 |
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176 { ">=", |
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928
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177 "Greater than or equals operator.", }, |
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178 |
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179 { "[", |
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180 "Return list delimiter. See also `]'.", }, |
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181 |
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182 { "\\", |
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183 "Left division operator. See also `/' and `./'.", }, |
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184 |
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185 { "]", |
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186 "Return list delimiter. See also `['.", }, |
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187 |
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188 { "^", |
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189 "Power operator. See also `**', `.^', and `.**.'", }, |
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190 |
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191 { "|", |
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192 "Logical or operator. See also `||'.", }, |
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193 |
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194 { "||", |
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195 "Logical or operator. See also `|'.", }, |
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196 |
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197 { "~", |
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198 "Logical not operator. See also `!' and `~'.", }, |
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199 |
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200 { "~=", |
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201 "Logical not equals operator. See also `<>' and `!='.", }, |
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202 |
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529
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203 { 0, 0, }, |
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204 }; |
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205 |
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206 static help_list keywords[] = |
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207 { |
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208 { "all_va_args", |
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209 "Pass all unnamed arguments to another function call.", }, |
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210 |
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211 { "break", |
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212 "Exit the innermost enclosing while or for loop.", }, |
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213 |
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214 { "catch", |
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215 "begin the cleanup part of a try-catch block", }, |
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216 |
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217 { "continue", |
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218 "Jump to the end of the innermost enclosing while or for loop.", }, |
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219 |
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220 { "else", |
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221 "Alternate action for an if block.", }, |
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222 |
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223 { "elseif", |
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224 "Alternate conditional test for an if block.", }, |
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225 |
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226 { "end", |
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227 "Mark the end of any for, if, while, or function block.", }, |
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228 |
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229 { "end_try_catch", |
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230 "Mark the end of an try-catch block.", }, |
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231 |
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232 { "end_unwind_protect", |
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233 "Mark the end of an unwind_protect block.", }, |
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234 |
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235 { "endfor", |
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236 "Mark the end of a for loop.", }, |
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237 |
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238 { "endfunction", |
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239 "Mark the end of a function.", }, |
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240 |
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241 { "endif", |
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242 "Mark the end of an if block.", }, |
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243 |
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244 { "endwhile", |
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245 "Mark the end of a while loop.", }, |
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246 |
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247 { "for", |
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248 "Begin a for loop.", }, |
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249 |
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250 { "function", |
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251 "Begin a function body.", }, |
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252 |
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253 { "global", |
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254 "Declare variables to have global scope.", }, |
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255 |
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256 { "gplot", |
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257 "Produce 2-D plots using gnuplot-like command syntax.", }, |
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258 |
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259 { "gsplot", |
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260 "Produce 3-D plots using gnuplot-like command syntax.", }, |
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261 |
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262 { "if", |
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263 "Begin an if block.", }, |
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264 |
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265 { "return", |
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266 "Return from a function.", }, |
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267 |
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268 { "try", |
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269 "Begin a try-catch block.", }, |
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270 |
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271 { "unwind_protect", |
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272 "Begin an unwind_protect block.", }, |
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273 |
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274 { "unwind_protect_cleanup", |
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275 "Begin the cleanup section of an unwind_protect block.", }, |
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276 |
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277 { "while", |
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278 "Begin a while loop.", }, |
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279 |
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529
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280 { 0, 0, }, |
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281 }; |
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282 |
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283 // Return a copy of the operator or keyword names. |
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284 |
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285 string_vector |
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286 names (help_list *lst, int& count) |
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287 { |
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288 string_vector retval; |
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289 |
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290 count = 0; |
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291 help_list *ptr = lst; |
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292 while (ptr->name) |
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293 { |
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294 count++; |
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295 ptr++; |
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296 } |
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297 |
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298 if (count > 0) |
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299 { |
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300 retval.resize (count); |
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301 |
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302 ptr = lst; |
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303 for (int i = 0; i < count; i++) |
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304 { |
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305 retval[i] = ptr->name; |
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306 ptr++; |
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307 } |
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308 } |
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309 |
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310 return retval; |
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311 } |
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312 |
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313 help_list * |
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314 operator_help (void) |
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315 { |
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316 return operators; |
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317 } |
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318 |
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319 help_list * |
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320 keyword_help (void) |
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321 { |
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322 return keywords; |
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323 } |
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324 |
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1115
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325 #define VERBOSE_HELP_MESSAGE \ |
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326 "\n\ |
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327 Additional help for builtin functions, operators, and variables\n\ |
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328 is available in the on-line version of the manual.\n\ |
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329 \n\ |
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330 Use the command `help -i <topic>' to search the manual index.\n" |
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331 |
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332 static void |
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2095
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333 additional_help_message (ostream& os) |
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542
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334 { |
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1140
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335 #ifdef USE_GNU_INFO |
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2189
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336 if (! Vsuppress_verbose_help_message) |
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337 os << VERBOSE_HELP_MESSAGE; |
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1140
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338 #endif |
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542
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339 } |
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340 |
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341 void |
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342 print_usage (const string& nm, int just_usage) |
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542
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343 { |
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1755
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344 symbol_record *sym_rec = global_sym_tab->lookup (nm, 0, 0); |
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542
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345 if (sym_rec) |
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346 { |
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1755
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347 string h = sym_rec->help (); |
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348 |
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349 if (h.length () > 0) |
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542
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350 { |
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351 octave_stdout << "\n*** " << nm << ":\n\n" |
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542
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352 << h << "\n"; |
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353 |
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1117
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354 if (! just_usage) |
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355 additional_help_message (octave_stdout); |
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542
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356 } |
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357 } |
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358 else |
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359 warning ("no usage message found for `%s'", nm.c_str ()); |
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542
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360 } |
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361 |
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529
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362 static void |
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363 display_names_from_help_list (ostream& os, help_list *list, |
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542
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364 const char *desc) |
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529
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365 { |
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366 int count = 0; |
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367 string_vector symbols = names (list, count); |
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1808
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368 if (! symbols.empty ()) |
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369 { |
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2095
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370 os << "\n*** " << desc << ":\n\n"; |
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371 symbols.list_in_columns (os); |
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1808
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372 } |
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529
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373 } |
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374 |
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1755
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375 static string |
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2095
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376 print_symbol_type (ostream& os, symbol_record *sym_rec, |
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377 const string& name, int print) |
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742
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378 { |
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1755
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379 string retval; |
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742
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380 |
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381 if (sym_rec->is_user_function ()) |
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382 { |
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383 tree_fvc *defn = sym_rec->def (); |
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1755
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384 |
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385 string fn = defn->fcn_file_name (); |
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386 |
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387 if (! fn.empty ()) |
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742
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388 { |
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1755
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389 string ff = fcn_file_in_path (fn); |
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390 |
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391 ff = ff.length () > 0 ? ff : fn; |
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742
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392 |
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393 if (print) |
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2095
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394 os << name |
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395 << " is the function defined from:\n" |
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396 << ff << "\n"; |
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742
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397 else |
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398 retval = ff; |
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399 } |
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400 else |
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401 { |
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402 if (print) |
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2095
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403 os << name << " is a user-defined function\n"; |
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742
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404 else |
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405 retval = "user-defined function"; |
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406 } |
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407 } |
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408 else if (sym_rec->is_text_function ()) |
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409 { |
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410 if (print) |
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2095
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411 os << name << " is a builtin text-function\n"; |
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742
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412 else |
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413 retval = "builtin text-function"; |
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414 } |
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415 else if (sym_rec->is_builtin_function ()) |
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416 { |
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417 if (print) |
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2095
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418 os << name << " is a builtin function\n"; |
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742
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419 else |
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420 retval = "builtin function"; |
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421 } |
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422 else if (sym_rec->is_user_variable ()) |
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423 { |
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424 if (print) |
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2095
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425 os << name << " is a user-defined variable\n"; |
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742
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426 else |
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427 retval = "user-defined variable"; |
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428 } |
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429 else if (sym_rec->is_builtin_variable ()) |
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430 { |
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431 if (print) |
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2095
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432 os << name << " is a builtin variable\n"; |
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742
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433 else |
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434 retval = "builtin variable"; |
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435 } |
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436 else |
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437 { |
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438 if (print) |
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2095
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439 os << "which: `" << name << "' has unknown type\n"; |
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742
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440 else |
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441 retval = "unknown type"; |
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442 } |
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443 |
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444 return retval; |
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445 } |
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446 |
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529
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447 static void |
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2095
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448 display_symtab_names (ostream& os, const string_vector& names, |
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1755
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449 int /* count */, const string& desc) |
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542
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450 { |
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1808
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451 if (! names.empty ()) |
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452 { |
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2095
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453 os << "\n*** " << desc << ":\n\n"; |
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454 names.list_in_columns (os); |
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1808
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455 } |
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542
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456 } |
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457 |
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458 static void |
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529
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459 simple_help (void) |
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460 { |
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2095
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461 display_names_from_help_list (octave_stdout, operator_help (), |
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542
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462 "operators"); |
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529
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463 |
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2095
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464 display_names_from_help_list (octave_stdout, keyword_help (), |
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542
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465 "reserved words"); |
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529
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466 |
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542
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467 #ifdef LIST_SYMBOLS |
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468 #undef LIST_SYMBOLS |
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469 #endif |
|
|
470 #define LIST_SYMBOLS(type, msg) \ |
|
|
471 do \ |
|
|
472 { \ |
|
|
473 int count; \ |
|
1755
|
474 string_vector names = global_sym_tab->list (count, 0, 0, 1, type); \ |
|
2095
|
475 display_symtab_names (octave_stdout, names, count, msg); \ |
|
542
|
476 } \ |
|
|
477 while (0) |
|
529
|
478 |
|
1358
|
479 // XXX FIXME XXX -- is this distinction needed? |
|
|
480 |
|
542
|
481 LIST_SYMBOLS (symbol_def::TEXT_FUNCTION, |
|
|
482 "text functions (these names are also reserved)"); |
|
529
|
483 |
|
542
|
484 LIST_SYMBOLS (symbol_def::MAPPER_FUNCTION, "mapper functions"); |
|
|
485 |
|
|
486 LIST_SYMBOLS (symbol_def::BUILTIN_FUNCTION, "general functions"); |
|
|
487 |
|
|
488 LIST_SYMBOLS (symbol_def::BUILTIN_VARIABLE, "builtin variables"); |
|
|
489 |
|
1358
|
490 // Also need to list variables and currently compiled functions from |
|
|
491 // the symbol table, if there are any. |
|
529
|
492 |
|
1358
|
493 // Also need to search octave_path for script files. |
|
529
|
494 |
|
2202
|
495 dir_path p (Vload_path); |
|
529
|
496 |
|
1787
|
497 string_vector dirs = p.all_directories (); |
|
679
|
498 |
|
1787
|
499 int len = dirs.length (); |
|
679
|
500 |
|
1787
|
501 for (int i = 0; i < len; i++) |
|
|
502 { |
|
|
503 string_vector names = get_fcn_file_names (dirs[i]); |
|
679
|
504 |
|
1787
|
505 if (! names.empty ()) |
|
|
506 { |
|
2095
|
507 octave_stdout << "\n*** function files in " |
|
2202
|
508 << make_absolute (dirs[i], Vcurrent_directory) |
|
2095
|
509 << ":\n\n"; |
|
679
|
510 |
|
2095
|
511 names.list_in_columns (octave_stdout); |
|
529
|
512 } |
|
|
513 } |
|
|
514 |
|
2095
|
515 additional_help_message (octave_stdout); |
|
529
|
516 } |
|
|
517 |
|
1140
|
518 #ifdef USE_GNU_INFO |
|
529
|
519 static int |
|
1755
|
520 try_info (const string& nm) |
|
529
|
521 { |
|
|
522 int status = 0; |
|
|
523 |
|
1295
|
524 static char *cmd_str = 0; |
|
|
525 |
|
|
526 delete [] cmd_str; |
|
|
527 cmd_str = 0; |
|
|
528 |
|
|
529 ostrstream cmd_buf; |
|
|
530 |
|
2202
|
531 cmd_buf << Vinfo_prog << " --file " << Vinfo_file; |
|
1295
|
532 |
|
2202
|
533 string directory_name = Vinfo_file; |
|
1755
|
534 size_t pos = directory_name.rfind ('/'); |
|
|
535 |
|
|
536 if (pos != NPOS) |
|
529
|
537 { |
|
1755
|
538 directory_name.resize (pos + 1); |
|
1295
|
539 cmd_buf << " --directory " << directory_name; |
|
529
|
540 } |
|
|
541 |
|
1755
|
542 if (nm.length () > 0) |
|
|
543 cmd_buf << " --index-search " << nm; |
|
529
|
544 |
|
1295
|
545 cmd_buf << ends; |
|
529
|
546 |
|
1295
|
547 cmd_str = cmd_buf.str (); |
|
529
|
548 |
|
1295
|
549 volatile sig_handler *old_sigint_handler; |
|
1443
|
550 old_sigint_handler = octave_set_signal_handler (SIGINT, SIG_IGN); |
|
529
|
551 |
|
1295
|
552 status = system (cmd_str); |
|
529
|
553 |
|
1443
|
554 octave_set_signal_handler (SIGINT, old_sigint_handler); |
|
529
|
555 |
|
1295
|
556 if ((status & 0xff) == 0) |
|
|
557 status = (signed char) ((status & 0xff00) >> 8); |
|
|
558 else |
|
|
559 status = 127; |
|
529
|
560 |
|
|
561 return status; |
|
|
562 } |
|
1140
|
563 #endif |
|
|
564 |
|
|
565 static void |
|
1755
|
566 help_from_info (const string_vector& argv, int idx, int argc) |
|
1140
|
567 { |
|
|
568 #ifdef USE_GNU_INFO |
|
1755
|
569 if (idx == argc) |
|
|
570 try_info (string ()); |
|
1140
|
571 else |
|
|
572 { |
|
1755
|
573 for (int i = idx; i < argc; i++) |
|
1140
|
574 { |
|
1755
|
575 int status = try_info (argv[i]); |
|
1140
|
576 |
|
1295
|
577 if (status) |
|
1140
|
578 { |
|
1295
|
579 if (status < 0) |
|
|
580 { |
|
|
581 message ("help", |
|
|
582 "sorry, `%s' is not indexed in the manual", |
|
1755
|
583 argv[i].c_str ()); |
|
1295
|
584 sleep (2); |
|
|
585 } |
|
|
586 else |
|
|
587 { |
|
|
588 error ("help: unable to find info!"); |
|
|
589 break; |
|
|
590 } |
|
1140
|
591 } |
|
|
592 } |
|
|
593 } |
|
|
594 #else |
|
|
595 message (0, "sorry, help -i is not available in this version of Octave"); |
|
|
596 #endif |
|
|
597 } |
|
529
|
598 |
|
542
|
599 int |
|
2095
|
600 help_from_list (ostream& os, const help_list *list, |
|
1755
|
601 const string& nm, int usage) |
|
542
|
602 { |
|
|
603 char *name; |
|
|
604 while ((name = list->name) != 0) |
|
|
605 { |
|
1755
|
606 if (strcmp (name, nm.c_str ()) == 0) |
|
542
|
607 { |
|
|
608 if (usage) |
|
2095
|
609 os << "\nusage: "; |
|
542
|
610 else |
|
|
611 { |
|
2095
|
612 os << "\n*** " << nm << ":\n\n"; |
|
542
|
613 } |
|
|
614 |
|
2095
|
615 os << list->help << "\n"; |
|
542
|
616 |
|
|
617 return 1; |
|
|
618 } |
|
|
619 list++; |
|
|
620 } |
|
|
621 return 0; |
|
|
622 } |
|
|
623 |
|
1140
|
624 static void |
|
1755
|
625 builtin_help (int argc, const string_vector& argv) |
|
1140
|
626 { |
|
|
627 help_list *op_help_list = operator_help (); |
|
|
628 help_list *kw_help_list = keyword_help (); |
|
|
629 |
|
1755
|
630 for (int i = 1; i < argc; i++) |
|
1140
|
631 { |
|
2095
|
632 if (help_from_list (octave_stdout, op_help_list, argv[i], 0)) |
|
1140
|
633 continue; |
|
|
634 |
|
2095
|
635 if (help_from_list (octave_stdout, kw_help_list, argv[i], 0)) |
|
1140
|
636 continue; |
|
|
637 |
|
1755
|
638 symbol_record *sym_rec = lookup_by_name (argv[i], 0); |
|
1140
|
639 |
|
|
640 if (sym_rec && sym_rec->is_defined ()) |
|
|
641 { |
|
1755
|
642 string h = sym_rec->help (); |
|
|
643 |
|
|
644 if (h.length () > 0) |
|
1140
|
645 { |
|
2095
|
646 print_symbol_type (octave_stdout, sym_rec, argv[i], 1); |
|
|
647 octave_stdout << "\n" << h << "\n"; |
|
1140
|
648 continue; |
|
|
649 } |
|
|
650 } |
|
|
651 |
|
1755
|
652 string path = fcn_file_in_path (argv[i]); |
|
|
653 |
|
|
654 string h = get_help_from_file (path); |
|
|
655 |
|
|
656 if (! h.empty ()) |
|
1140
|
657 { |
|
2095
|
658 octave_stdout << argv[i] << " is the file:\n" |
|
1140
|
659 << path << "\n\n" << h << "\n"; |
|
1755
|
660 |
|
1140
|
661 continue; |
|
|
662 } |
|
|
663 |
|
2095
|
664 octave_stdout << "\nhelp: sorry, `" << argv[i] |
|
|
665 << "' is not documented\n"; |
|
1140
|
666 } |
|
|
667 |
|
2095
|
668 additional_help_message (octave_stdout); |
|
1140
|
669 } |
|
|
670 |
|
|
671 #ifdef USE_GNU_INFO |
|
1957
|
672 DEFUN_TEXT (help, args, , |
|
529
|
673 "help [-i] [topic ...]\n\ |
|
|
674 \n\ |
|
|
675 print cryptic yet witty messages") |
|
1140
|
676 #else |
|
1957
|
677 DEFUN_TEXT (help, args, , |
|
1140
|
678 "help [topic ...]\n\ |
|
|
679 \n\ |
|
|
680 print cryptic yet witty messages") |
|
|
681 #endif |
|
529
|
682 { |
|
2086
|
683 octave_value_list retval; |
|
529
|
684 |
|
1755
|
685 int argc = args.length () + 1; |
|
|
686 |
|
1968
|
687 string_vector argv = args.make_argv ("help"); |
|
1755
|
688 |
|
|
689 if (error_state) |
|
|
690 return retval; |
|
529
|
691 |
|
|
692 if (argc == 1) |
|
|
693 { |
|
|
694 simple_help (); |
|
|
695 } |
|
|
696 else |
|
|
697 { |
|
1755
|
698 if (argv[1] == "-i") |
|
529
|
699 { |
|
1755
|
700 help_from_info (argv, 2, argc); |
|
529
|
701 } |
|
|
702 else |
|
|
703 { |
|
1140
|
704 builtin_help (argc, argv); |
|
529
|
705 } |
|
|
706 } |
|
|
707 |
|
|
708 return retval; |
|
|
709 } |
|
|
710 |
|
1957
|
711 DEFUN_TEXT (type, args, nargout, |
|
581
|
712 "type NAME ...]\n\ |
|
|
713 \n\ |
|
|
714 display the definition of each NAME that refers to a function") |
|
|
715 { |
|
2086
|
716 octave_value_list retval; |
|
581
|
717 |
|
1588
|
718 begin_unwind_frame ("Ftype"); |
|
|
719 |
|
2177
|
720 unwind_protect_str (Vps4); |
|
|
721 Vps4 = ""; |
|
1588
|
722 |
|
1755
|
723 int argc = args.length () + 1; |
|
|
724 |
|
1968
|
725 string_vector argv = args.make_argv ("type"); |
|
1755
|
726 |
|
|
727 if (error_state) |
|
|
728 return retval; |
|
581
|
729 |
|
|
730 if (argc > 1) |
|
|
731 { |
|
1358
|
732 // XXX FIXME XXX -- we should really use getopt () |
|
|
733 |
|
581
|
734 int quiet = 0; |
|
1755
|
735 int idx = 1; |
|
|
736 if (argv[idx] == "-q") |
|
581
|
737 { |
|
|
738 quiet = 1; |
|
1755
|
739 idx++; |
|
581
|
740 } |
|
|
741 |
|
|
742 ostrstream output_buf; |
|
|
743 |
|
1755
|
744 for (int i = idx; i < argc; i++) |
|
581
|
745 { |
|
1755
|
746 string id = argv[i]; |
|
|
747 string elts; |
|
581
|
748 |
|
1755
|
749 if (id[id.length () - 1] != '.') |
|
1281
|
750 { |
|
1755
|
751 size_t pos = id.find ('.'); |
|
|
752 |
|
|
753 if (pos != NPOS) |
|
1288
|
754 { |
|
1889
|
755 elts = id.substr (pos+1); |
|
1755
|
756 id = id.substr (0, pos); |
|
1288
|
757 } |
|
1281
|
758 } |
|
|
759 |
|
|
760 symbol_record *sym_rec = lookup_by_name (id, 0); |
|
581
|
761 |
|
|
762 if (sym_rec) |
|
|
763 { |
|
|
764 if (sym_rec->is_user_function ()) |
|
|
765 { |
|
|
766 tree_fvc *defn = sym_rec->def (); |
|
|
767 |
|
|
768 if (nargout == 0 && ! quiet) |
|
1755
|
769 output_buf << argv[i] << " is a user-defined function\n"; |
|
581
|
770 |
|
2124
|
771 tree_print_code tpc (output_buf); |
|
|
772 |
|
|
773 defn->accept (tpc); |
|
581
|
774 } |
|
|
775 |
|
1358
|
776 // XXX FIXME XXX -- this code should be shared with |
|
|
777 // Fwhich. |
|
581
|
778 |
|
|
779 else if (sym_rec->is_text_function ()) |
|
1755
|
780 output_buf << argv[i] << " is a builtin text-function\n"; |
|
581
|
781 else if (sym_rec->is_builtin_function ()) |
|
1755
|
782 output_buf << argv[i] << " is a builtin function\n"; |
|
1281
|
783 else if (sym_rec->is_user_variable () |
|
|
784 || sym_rec->is_builtin_variable ()) |
|
625
|
785 { |
|
|
786 tree_fvc *defn = sym_rec->def (); |
|
|
787 |
|
1288
|
788 assert (defn && defn->is_constant ()); |
|
1281
|
789 |
|
2086
|
790 octave_value *tmp = (octave_value *) defn; |
|
625
|
791 |
|
1281
|
792 int var_ok = 1; |
|
|
793 if (tmp && tmp->is_map ()) |
|
|
794 { |
|
1755
|
795 if (! elts.empty ()) |
|
1281
|
796 { |
|
2086
|
797 octave_value ult = |
|
1288
|
798 tmp->lookup_map_element (elts, 0, 1); |
|
625
|
799 |
|
1281
|
800 if (! ult.is_defined ()) |
|
|
801 var_ok = 0; |
|
|
802 } |
|
|
803 } |
|
1288
|
804 |
|
1281
|
805 if (nargout == 0 && ! quiet) |
|
|
806 { |
|
1288
|
807 if (var_ok) |
|
|
808 { |
|
1755
|
809 output_buf << argv[i]; |
|
1288
|
810 if (sym_rec->is_user_variable ()) |
|
|
811 output_buf << " is a user-defined variable\n"; |
|
|
812 else |
|
|
813 output_buf << " is a built-in variable\n"; |
|
|
814 } |
|
1281
|
815 else |
|
1288
|
816 { |
|
1755
|
817 if (! elts.empty ()) |
|
1288
|
818 output_buf << "type: structure `" << id |
|
|
819 << "' has no member `" << elts << "'\n"; |
|
|
820 else |
|
|
821 output_buf << "type: `" << id |
|
|
822 << "' has unknown type!"; |
|
|
823 } |
|
1281
|
824 } |
|
|
825 if (! tmp->is_map ()) |
|
|
826 { |
|
2124
|
827 tree_print_code tpc (output_buf); |
|
|
828 |
|
|
829 tmp->accept (tpc); |
|
625
|
830 |
|
1281
|
831 if (nargout == 0) |
|
|
832 output_buf << "\n"; |
|
|
833 } |
|
625
|
834 } |
|
581
|
835 else |
|
1755
|
836 output_buf << "type: `" << argv[i] << "' has unknown type!\n"; |
|
581
|
837 } |
|
|
838 else |
|
1755
|
839 output_buf << "type: `" << argv[i] << "' undefined\n"; |
|
581
|
840 } |
|
|
841 |
|
|
842 output_buf << ends; |
|
|
843 |
|
2095
|
844 char *s = output_buf.str (); |
|
|
845 |
|
581
|
846 if (nargout == 0) |
|
2095
|
847 octave_stdout << s; |
|
581
|
848 else |
|
2095
|
849 retval = s; |
|
|
850 |
|
|
851 delete [] s; |
|
581
|
852 } |
|
|
853 else |
|
|
854 print_usage ("type"); |
|
|
855 |
|
1588
|
856 run_unwind_frame ("Ftype"); |
|
|
857 |
|
581
|
858 return retval; |
|
|
859 } |
|
|
860 |
|
1957
|
861 DEFUN_TEXT (which, args, nargout, |
|
1565
|
862 "which NAME ...\n\ |
|
581
|
863 \n\ |
|
|
864 display the type of each NAME. If NAME is defined from an function\n\ |
|
|
865 file, print the full name of the file.") |
|
|
866 { |
|
2086
|
867 octave_value_list retval; |
|
581
|
868 |
|
1755
|
869 int argc = args.length () + 1; |
|
|
870 |
|
1968
|
871 string_vector argv = args.make_argv ("which"); |
|
1755
|
872 |
|
|
873 if (error_state) |
|
|
874 return retval; |
|
581
|
875 |
|
|
876 if (argc > 1) |
|
|
877 { |
|
|
878 if (nargout > 0) |
|
|
879 retval.resize (argc-1, Matrix ()); |
|
|
880 |
|
1755
|
881 for (int i = 1; i < argc; i++) |
|
581
|
882 { |
|
1755
|
883 symbol_record *sym_rec = lookup_by_name (argv[i], 0); |
|
581
|
884 |
|
|
885 if (sym_rec) |
|
|
886 { |
|
742
|
887 int print = (nargout == 0); |
|
2095
|
888 string tmp = print_symbol_type (octave_stdout, sym_rec, |
|
1755
|
889 argv[i], print); |
|
742
|
890 if (! print) |
|
|
891 retval(i) = tmp; |
|
581
|
892 } |
|
|
893 else |
|
|
894 { |
|
|
895 if (nargout == 0) |
|
2095
|
896 octave_stdout << "which: `" << argv[i] << "' is undefined\n"; |
|
581
|
897 else |
|
|
898 retval(i) = "undefined"; |
|
|
899 } |
|
|
900 } |
|
|
901 } |
|
|
902 else |
|
|
903 print_usage ("which"); |
|
|
904 |
|
|
905 return retval; |
|
|
906 } |
|
|
907 |
|
2189
|
908 static int |
|
|
909 suppress_verbose_help_message (void) |
|
|
910 { |
|
|
911 Vsuppress_verbose_help_message |
|
|
912 = check_preference ("suppress_verbose_help_message"); |
|
|
913 |
|
|
914 return 0; |
|
|
915 } |
|
|
916 |
|
2202
|
917 static int |
|
|
918 info_file (void) |
|
|
919 { |
|
|
920 int status = 0; |
|
|
921 |
|
|
922 string s = builtin_string_variable ("INFO_FILE"); |
|
|
923 |
|
|
924 if (s.empty ()) |
|
|
925 { |
|
|
926 gripe_invalid_value_specified ("INFO_FILE"); |
|
|
927 status = -1; |
|
|
928 } |
|
|
929 else |
|
|
930 Vinfo_file = s; |
|
|
931 |
|
|
932 return status; |
|
|
933 } |
|
|
934 |
|
|
935 static int |
|
|
936 info_prog (void) |
|
|
937 { |
|
|
938 int status = 0; |
|
|
939 |
|
|
940 string s = builtin_string_variable ("INFO_PROGRAM"); |
|
|
941 |
|
|
942 if (s.empty ()) |
|
|
943 { |
|
|
944 gripe_invalid_value_specified ("INFO_PROGRAM"); |
|
|
945 status = -1; |
|
|
946 } |
|
|
947 else |
|
|
948 Vinfo_prog = s; |
|
|
949 |
|
|
950 return status; |
|
|
951 } |
|
|
952 |
|
2189
|
953 void |
|
|
954 symbols_of_help (void) |
|
|
955 { |
|
2202
|
956 DEFVAR (INFO_FILE, Vinfo_file, 0, info_file, |
|
|
957 "name of the Octave info file"); |
|
|
958 |
|
|
959 DEFVAR (INFO_PROGRAM, Vinfo_prog, 0, info_prog, |
|
|
960 "name of the Octave info reader"); |
|
|
961 |
|
2189
|
962 #ifdef USE_GNU_INFO |
|
|
963 DEFVAR (suppress_verbose_help_message, 0.0, 0, suppress_verbose_help_message, |
|
|
964 "suppress printing of message pointing to additional help in the\n\ |
|
|
965 help and usage functions"); |
|
|
966 #endif |
|
|
967 } |
|
|
968 |
|
1
|
969 /* |
|
|
970 ;;; Local Variables: *** |
|
|
971 ;;; mode: C++ *** |
|
|
972 ;;; End: *** |
|
|
973 */ |
