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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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2442
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37 #ifdef HAVE_SYS_TYPES_H |
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38 #include <sys/types.h> |
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39 #endif |
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40 #include <unistd.h> |
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41 #endif |
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42 |
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43 #include "str-vec.h" |
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44 |
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2202
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45 #include "defaults.h" |
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1352
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46 #include "defun.h" |
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47 #include "dirfns.h" |
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48 #include "error.h" |
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2233
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49 #include "fn-cache.h" |
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2202
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50 #include "gripes.h" |
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1352
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51 #include "help.h" |
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2177
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52 #include "input.h" |
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1755
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53 #include "oct-obj.h" |
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54 #include "pager.h" |
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1466
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55 #include "pathsearch.h" |
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1755
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56 #include "pt-const.h" |
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57 #include "pt-exp.h" |
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2124
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58 #include "pt-pr-code.h" |
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529
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59 #include "sighandlers.h" |
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60 #include "symtab.h" |
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1755
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61 #include "toplev.h" |
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1588
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62 #include "unwind-prot.h" |
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242
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63 #include "utils.h" |
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64 #include "variables.h" |
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65 |
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66 // Name of the info file specified on command line. |
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67 // (--info-file file) |
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68 string Vinfo_file; |
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69 |
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70 // Name of the info reader we'd like to use. |
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71 // (--info-program program) |
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72 string Vinfo_prog; |
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73 |
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2189
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74 // If TRUE, don't print additional help message in help and usage |
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75 // functions. |
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76 static bool Vsuppress_verbose_help_message; |
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77 |
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78 static help_list operators[] = |
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79 { |
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80 { "!", |
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81 "Logical not operator. See also `~'.\n", }, |
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82 |
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83 { "!=", |
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84 "Logical not equals operator. See also `~' and `<>'.\n", }, |
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85 |
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86 { "\"", |
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87 "String delimiter.\n", }, |
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88 |
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89 { "#", |
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90 "Begin comment character. See also `%'.", }, |
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91 |
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92 { "%", |
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93 "Begin comment charcter. See also `#'.", }, |
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94 |
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95 { "&", |
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928
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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 "Logical and operator. See also `&'.", }, |
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100 |
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101 { "'", |
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102 "Matrix transpose operator. For complex matrices, computes the\n\ |
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103 complex conjugate (Hermitian) transpose. See also `.''\n\ |
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104 \n\ |
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105 The single quote character may also be used to delimit strings, but\n\ |
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106 it is better to use the double quote character, since that is never\n\ |
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107 ambiguous", }, |
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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 "Array index or function argument delimiter.", }, |
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114 |
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115 { "*", |
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928
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116 "Multiplication operator. See also `.*'", }, |
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117 |
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118 { "**", |
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928
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119 "Power operator. See also `^', `.**', and `.^'", }, |
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120 |
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121 { "+", |
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928
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122 "Addition operator.", }, |
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123 |
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124 { "++", |
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928
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125 "Increment operator. As in C, may be applied as a prefix or postfix operator.", }, |
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126 |
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127 { ",", |
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928
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128 "Array index, function argument, or command separator.", }, |
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1
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129 |
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130 { "-", |
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928
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131 "Subtraction or unary negation operator.", }, |
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132 |
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133 { "--", |
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134 "Decrement operator. As in C, may be applied as a prefix or postfix operator.", }, |
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135 |
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136 { ".'", |
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137 "Matrix transpose operator. For complex matrices, computes the\n\ |
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138 transpose, *not* the complex conjugate transpose. 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 multiplication operator. See also `*'.", }, |
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142 |
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143 { ".**", |
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928
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144 "Element by element power 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 division operator. See also `/' and `\\'.", }, |
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148 |
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149 { ".^", |
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928
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150 "Element by element power operator. See also `**', `^', and `.^'.", }, |
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151 |
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152 { "/", |
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153 "Right division. See also `\\' and `./'.", }, |
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154 |
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155 { ":", |
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156 "Select entire rows or columns of matrices.", }, |
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157 |
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158 { ";", |
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159 "Array row or command separator. See also `,'.", }, |
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160 |
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161 { "<", |
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928
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162 "Less than operator.", }, |
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163 |
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164 { "<=", |
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928
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165 "Less than or equals operator.", }, |
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166 |
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167 { "<>", |
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928
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168 "Logical not equals operator. See also `!=' and `~='.", }, |
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169 |
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170 { "=", |
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928
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171 "Assignment operator.", }, |
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172 |
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173 { "==", |
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928
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174 "Equality test operator.", }, |
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175 |
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176 { ">", |
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177 "Greater than operator.", }, |
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178 |
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179 { ">=", |
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928
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180 "Greater than or equals operator.", }, |
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181 |
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182 { "[", |
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928
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183 "Return list delimiter. See also `]'.", }, |
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184 |
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185 { "\\", |
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928
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186 "Left division operator. See also `/' and `./'.", }, |
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187 |
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188 { "]", |
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928
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189 "Return list delimiter. See also `['.", }, |
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190 |
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191 { "^", |
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192 "Power operator. See also `**', `.^', and `.**.'", }, |
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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 or operator. See also `|'.", }, |
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199 |
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200 { "~", |
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201 "Logical not operator. See also `!' and `~'.", }, |
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202 |
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203 { "~=", |
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928
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204 "Logical not equals operator. See also `<>' and `!='.", }, |
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205 |
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529
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206 { 0, 0, }, |
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207 }; |
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208 |
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209 static help_list keywords[] = |
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210 { |
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928
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211 { "all_va_args", |
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212 "Pass all unnamed arguments to another function call.", }, |
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213 |
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214 { "break", |
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215 "Exit the innermost enclosing while or for loop.", }, |
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216 |
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217 { "catch", |
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218 "begin the cleanup part of a try-catch block", }, |
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219 |
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220 { "continue", |
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221 "Jump to the end of the innermost enclosing while or for loop.", }, |
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222 |
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223 { "else", |
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224 "Alternate action for an if block.", }, |
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225 |
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226 { "elseif", |
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227 "Alternate conditional test for an if block.", }, |
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228 |
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229 { "end", |
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230 "Mark the end of any for, if, while, or function block.", }, |
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231 |
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232 { "end_try_catch", |
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233 "Mark the end of an try-catch block.", }, |
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234 |
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235 { "end_unwind_protect", |
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236 "Mark the end of an unwind_protect block.", }, |
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237 |
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238 { "endfor", |
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239 "Mark the end of a for loop.", }, |
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240 |
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241 { "endfunction", |
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242 "Mark the end of a function.", }, |
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243 |
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244 { "endif", |
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245 "Mark the end of an if block.", }, |
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246 |
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247 { "endwhile", |
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248 "Mark the end of a while loop.", }, |
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249 |
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250 { "for", |
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251 "Begin a for loop.", }, |
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252 |
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253 { "function", |
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254 "Begin a function body.", }, |
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255 |
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256 { "global", |
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257 "Declare variables to have global scope.", }, |
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258 |
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259 { "gplot", |
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260 "Produce 2-D plots using gnuplot-like command syntax.", }, |
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261 |
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262 { "gsplot", |
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263 "Produce 3-D plots using gnuplot-like command syntax.", }, |
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264 |
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265 { "if", |
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266 "Begin an if block.", }, |
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267 |
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268 { "return", |
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269 "Return from a function.", }, |
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270 |
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271 { "try", |
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272 "Begin a try-catch block.", }, |
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273 |
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274 { "unwind_protect", |
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275 "Begin an unwind_protect block.", }, |
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276 |
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277 { "unwind_protect_cleanup", |
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278 "Begin the cleanup section of an unwind_protect block.", }, |
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279 |
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280 { "while", |
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281 "Begin a while loop.", }, |
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282 |
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529
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283 { 0, 0, }, |
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1
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284 }; |
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285 |
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286 // Return a copy of the operator or keyword names. |
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287 |
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288 string_vector |
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289 names (help_list *lst, int& count) |
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290 { |
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291 string_vector retval; |
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292 |
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293 count = 0; |
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294 help_list *ptr = lst; |
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529
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295 while (ptr->name) |
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296 { |
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297 count++; |
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298 ptr++; |
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299 } |
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300 |
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1755
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301 if (count > 0) |
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302 { |
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303 retval.resize (count); |
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304 |
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305 ptr = lst; |
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306 for (int i = 0; i < count; i++) |
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307 { |
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308 retval[i] = ptr->name; |
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309 ptr++; |
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310 } |
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311 } |
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312 |
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313 return retval; |
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314 } |
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315 |
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316 help_list * |
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317 operator_help (void) |
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318 { |
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319 return operators; |
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320 } |
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321 |
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322 help_list * |
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323 keyword_help (void) |
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324 { |
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325 return keywords; |
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326 } |
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327 |
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1115
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328 #define VERBOSE_HELP_MESSAGE \ |
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329 "\n\ |
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330 Additional help for builtin functions, operators, and variables\n\ |
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331 is available in the on-line version of the manual.\n\ |
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332 \n\ |
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333 Use the command `help -i <topic>' to search the manual index.\n" |
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334 |
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335 static void |
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2095
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336 additional_help_message (ostream& os) |
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542
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337 { |
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1140
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338 #ifdef USE_GNU_INFO |
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2189
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339 if (! Vsuppress_verbose_help_message) |
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2095
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340 os << VERBOSE_HELP_MESSAGE; |
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1140
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341 #endif |
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542
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342 } |
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343 |
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344 void |
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1755
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345 print_usage (const string& nm, int just_usage) |
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542
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346 { |
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1755
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347 symbol_record *sym_rec = global_sym_tab->lookup (nm, 0, 0); |
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542
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348 if (sym_rec) |
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349 { |
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1755
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350 string h = sym_rec->help (); |
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351 |
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352 if (h.length () > 0) |
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542
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353 { |
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2095
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354 octave_stdout << "\n*** " << nm << ":\n\n" |
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542
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355 << h << "\n"; |
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356 |
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1117
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357 if (! just_usage) |
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358 additional_help_message (octave_stdout); |
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542
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359 } |
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360 } |
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1023
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361 else |
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1755
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362 warning ("no usage message found for `%s'", nm.c_str ()); |
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542
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363 } |
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364 |
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529
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365 static void |
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2095
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366 display_names_from_help_list (ostream& os, help_list *list, |
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542
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367 const char *desc) |
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529
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368 { |
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369 int count = 0; |
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1755
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370 string_vector symbols = names (list, count); |
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1808
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371 if (! symbols.empty ()) |
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372 { |
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2095
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373 os << "\n*** " << desc << ":\n\n"; |
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374 symbols.list_in_columns (os); |
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1808
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375 } |
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529
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376 } |
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377 |
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1755
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378 static string |
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2095
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379 print_symbol_type (ostream& os, symbol_record *sym_rec, |
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1755
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380 const string& name, int print) |
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742
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381 { |
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1755
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382 string retval; |
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742
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383 |
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384 if (sym_rec->is_user_function ()) |
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385 { |
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386 tree_fvc *defn = sym_rec->def (); |
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1755
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387 |
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388 string fn = defn->fcn_file_name (); |
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389 |
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390 if (! fn.empty ()) |
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742
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391 { |
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1755
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392 string ff = fcn_file_in_path (fn); |
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393 |
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394 ff = ff.length () > 0 ? ff : fn; |
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742
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395 |
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396 if (print) |
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2095
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397 os << name |
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398 << " is the function defined from:\n" |
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399 << ff << "\n"; |
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742
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400 else |
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401 retval = ff; |
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402 } |
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403 else |
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404 { |
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405 if (print) |
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2095
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406 os << name << " is a user-defined function\n"; |
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742
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407 else |
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408 retval = "user-defined function"; |
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409 } |
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410 } |
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411 else if (sym_rec->is_text_function ()) |
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412 { |
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413 if (print) |
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2095
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414 os << name << " is a builtin text-function\n"; |
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742
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415 else |
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416 retval = "builtin text-function"; |
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417 } |
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418 else if (sym_rec->is_builtin_function ()) |
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419 { |
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420 if (print) |
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2095
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421 os << name << " is a builtin function\n"; |
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742
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422 else |
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423 retval = "builtin function"; |
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424 } |
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425 else if (sym_rec->is_user_variable ()) |
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426 { |
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427 if (print) |
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2095
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428 os << name << " is a user-defined variable\n"; |
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742
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429 else |
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430 retval = "user-defined variable"; |
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431 } |
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432 else if (sym_rec->is_builtin_variable ()) |
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433 { |
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434 if (print) |
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2095
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435 os << name << " is a builtin variable\n"; |
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742
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436 else |
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437 retval = "builtin variable"; |
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438 } |
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439 else |
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440 { |
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441 if (print) |
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2095
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442 os << "which: `" << name << "' has unknown type\n"; |
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742
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443 else |
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444 retval = "unknown type"; |
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445 } |
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446 |
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447 return retval; |
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448 } |
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449 |
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529
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450 static void |
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2095
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451 display_symtab_names (ostream& os, const string_vector& names, |
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1755
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452 int /* count */, const string& desc) |
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542
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453 { |
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1808
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454 if (! names.empty ()) |
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455 { |
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2095
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456 os << "\n*** " << desc << ":\n\n"; |
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457 names.list_in_columns (os); |
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1808
|
458 } |
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542
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459 } |
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460 |
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461 static void |
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529
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462 simple_help (void) |
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463 { |
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2095
|
464 display_names_from_help_list (octave_stdout, operator_help (), |
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542
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465 "operators"); |
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529
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466 |
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2095
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467 display_names_from_help_list (octave_stdout, keyword_help (), |
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542
|
468 "reserved words"); |
|
529
|
469 |
|
542
|
470 #ifdef LIST_SYMBOLS |
|
|
471 #undef LIST_SYMBOLS |
|
|
472 #endif |
|
|
473 #define LIST_SYMBOLS(type, msg) \ |
|
|
474 do \ |
|
|
475 { \ |
|
|
476 int count; \ |
|
1755
|
477 string_vector names = global_sym_tab->list (count, 0, 0, 1, type); \ |
|
2095
|
478 display_symtab_names (octave_stdout, names, count, msg); \ |
|
542
|
479 } \ |
|
|
480 while (0) |
|
529
|
481 |
|
1358
|
482 // XXX FIXME XXX -- is this distinction needed? |
|
|
483 |
|
542
|
484 LIST_SYMBOLS (symbol_def::TEXT_FUNCTION, |
|
|
485 "text functions (these names are also reserved)"); |
|
529
|
486 |
|
542
|
487 LIST_SYMBOLS (symbol_def::MAPPER_FUNCTION, "mapper functions"); |
|
|
488 |
|
|
489 LIST_SYMBOLS (symbol_def::BUILTIN_FUNCTION, "general functions"); |
|
|
490 |
|
|
491 LIST_SYMBOLS (symbol_def::BUILTIN_VARIABLE, "builtin variables"); |
|
|
492 |
|
1358
|
493 // Also need to list variables and currently compiled functions from |
|
|
494 // the symbol table, if there are any. |
|
529
|
495 |
|
1358
|
496 // Also need to search octave_path for script files. |
|
529
|
497 |
|
2202
|
498 dir_path p (Vload_path); |
|
529
|
499 |
|
1787
|
500 string_vector dirs = p.all_directories (); |
|
679
|
501 |
|
1787
|
502 int len = dirs.length (); |
|
679
|
503 |
|
1787
|
504 for (int i = 0; i < len; i++) |
|
|
505 { |
|
2233
|
506 string_vector names = octave_fcn_file_name_cache::list (dirs[i]); |
|
679
|
507 |
|
1787
|
508 if (! names.empty ()) |
|
|
509 { |
|
2095
|
510 octave_stdout << "\n*** function files in " |
|
2202
|
511 << make_absolute (dirs[i], Vcurrent_directory) |
|
2095
|
512 << ":\n\n"; |
|
679
|
513 |
|
2095
|
514 names.list_in_columns (octave_stdout); |
|
529
|
515 } |
|
|
516 } |
|
|
517 |
|
2095
|
518 additional_help_message (octave_stdout); |
|
529
|
519 } |
|
|
520 |
|
1140
|
521 #ifdef USE_GNU_INFO |
|
529
|
522 static int |
|
1755
|
523 try_info (const string& nm) |
|
529
|
524 { |
|
|
525 int status = 0; |
|
|
526 |
|
1295
|
527 static char *cmd_str = 0; |
|
|
528 |
|
|
529 delete [] cmd_str; |
|
|
530 cmd_str = 0; |
|
|
531 |
|
|
532 ostrstream cmd_buf; |
|
|
533 |
|
2202
|
534 cmd_buf << Vinfo_prog << " --file " << Vinfo_file; |
|
1295
|
535 |
|
2202
|
536 string directory_name = Vinfo_file; |
|
1755
|
537 size_t pos = directory_name.rfind ('/'); |
|
|
538 |
|
|
539 if (pos != NPOS) |
|
529
|
540 { |
|
1755
|
541 directory_name.resize (pos + 1); |
|
1295
|
542 cmd_buf << " --directory " << directory_name; |
|
529
|
543 } |
|
|
544 |
|
1755
|
545 if (nm.length () > 0) |
|
|
546 cmd_buf << " --index-search " << nm; |
|
529
|
547 |
|
1295
|
548 cmd_buf << ends; |
|
529
|
549 |
|
1295
|
550 cmd_str = cmd_buf.str (); |
|
529
|
551 |
|
1295
|
552 volatile sig_handler *old_sigint_handler; |
|
1443
|
553 old_sigint_handler = octave_set_signal_handler (SIGINT, SIG_IGN); |
|
529
|
554 |
|
1295
|
555 status = system (cmd_str); |
|
529
|
556 |
|
1443
|
557 octave_set_signal_handler (SIGINT, old_sigint_handler); |
|
529
|
558 |
|
1295
|
559 if ((status & 0xff) == 0) |
|
|
560 status = (signed char) ((status & 0xff00) >> 8); |
|
|
561 else |
|
|
562 status = 127; |
|
529
|
563 |
|
|
564 return status; |
|
|
565 } |
|
1140
|
566 #endif |
|
|
567 |
|
|
568 static void |
|
1755
|
569 help_from_info (const string_vector& argv, int idx, int argc) |
|
1140
|
570 { |
|
|
571 #ifdef USE_GNU_INFO |
|
1755
|
572 if (idx == argc) |
|
|
573 try_info (string ()); |
|
1140
|
574 else |
|
|
575 { |
|
1755
|
576 for (int i = idx; i < argc; i++) |
|
1140
|
577 { |
|
1755
|
578 int status = try_info (argv[i]); |
|
1140
|
579 |
|
1295
|
580 if (status) |
|
1140
|
581 { |
|
1295
|
582 if (status < 0) |
|
|
583 { |
|
|
584 message ("help", |
|
|
585 "sorry, `%s' is not indexed in the manual", |
|
1755
|
586 argv[i].c_str ()); |
|
1295
|
587 sleep (2); |
|
|
588 } |
|
|
589 else |
|
|
590 { |
|
|
591 error ("help: unable to find info!"); |
|
|
592 break; |
|
|
593 } |
|
1140
|
594 } |
|
|
595 } |
|
|
596 } |
|
|
597 #else |
|
|
598 message (0, "sorry, help -i is not available in this version of Octave"); |
|
|
599 #endif |
|
|
600 } |
|
529
|
601 |
|
542
|
602 int |
|
2095
|
603 help_from_list (ostream& os, const help_list *list, |
|
1755
|
604 const string& nm, int usage) |
|
542
|
605 { |
|
|
606 char *name; |
|
|
607 while ((name = list->name) != 0) |
|
|
608 { |
|
1755
|
609 if (strcmp (name, nm.c_str ()) == 0) |
|
542
|
610 { |
|
|
611 if (usage) |
|
2095
|
612 os << "\nusage: "; |
|
542
|
613 else |
|
|
614 { |
|
2095
|
615 os << "\n*** " << nm << ":\n\n"; |
|
542
|
616 } |
|
|
617 |
|
2095
|
618 os << list->help << "\n"; |
|
542
|
619 |
|
|
620 return 1; |
|
|
621 } |
|
|
622 list++; |
|
|
623 } |
|
|
624 return 0; |
|
|
625 } |
|
|
626 |
|
1140
|
627 static void |
|
1755
|
628 builtin_help (int argc, const string_vector& argv) |
|
1140
|
629 { |
|
|
630 help_list *op_help_list = operator_help (); |
|
|
631 help_list *kw_help_list = keyword_help (); |
|
|
632 |
|
1755
|
633 for (int i = 1; i < argc; i++) |
|
1140
|
634 { |
|
2095
|
635 if (help_from_list (octave_stdout, op_help_list, argv[i], 0)) |
|
1140
|
636 continue; |
|
|
637 |
|
2095
|
638 if (help_from_list (octave_stdout, kw_help_list, argv[i], 0)) |
|
1140
|
639 continue; |
|
|
640 |
|
1755
|
641 symbol_record *sym_rec = lookup_by_name (argv[i], 0); |
|
1140
|
642 |
|
|
643 if (sym_rec && sym_rec->is_defined ()) |
|
|
644 { |
|
1755
|
645 string h = sym_rec->help (); |
|
|
646 |
|
|
647 if (h.length () > 0) |
|
1140
|
648 { |
|
2095
|
649 print_symbol_type (octave_stdout, sym_rec, argv[i], 1); |
|
|
650 octave_stdout << "\n" << h << "\n"; |
|
1140
|
651 continue; |
|
|
652 } |
|
|
653 } |
|
|
654 |
|
1755
|
655 string path = fcn_file_in_path (argv[i]); |
|
|
656 |
|
|
657 string h = get_help_from_file (path); |
|
|
658 |
|
|
659 if (! h.empty ()) |
|
1140
|
660 { |
|
2095
|
661 octave_stdout << argv[i] << " is the file:\n" |
|
1140
|
662 << path << "\n\n" << h << "\n"; |
|
1755
|
663 |
|
1140
|
664 continue; |
|
|
665 } |
|
|
666 |
|
2095
|
667 octave_stdout << "\nhelp: sorry, `" << argv[i] |
|
|
668 << "' is not documented\n"; |
|
1140
|
669 } |
|
|
670 |
|
2095
|
671 additional_help_message (octave_stdout); |
|
1140
|
672 } |
|
|
673 |
|
|
674 #ifdef USE_GNU_INFO |
|
1957
|
675 DEFUN_TEXT (help, args, , |
|
529
|
676 "help [-i] [topic ...]\n\ |
|
|
677 \n\ |
|
|
678 print cryptic yet witty messages") |
|
1140
|
679 #else |
|
1957
|
680 DEFUN_TEXT (help, args, , |
|
1140
|
681 "help [topic ...]\n\ |
|
|
682 \n\ |
|
|
683 print cryptic yet witty messages") |
|
|
684 #endif |
|
529
|
685 { |
|
2086
|
686 octave_value_list retval; |
|
529
|
687 |
|
1755
|
688 int argc = args.length () + 1; |
|
|
689 |
|
1968
|
690 string_vector argv = args.make_argv ("help"); |
|
1755
|
691 |
|
|
692 if (error_state) |
|
|
693 return retval; |
|
529
|
694 |
|
|
695 if (argc == 1) |
|
|
696 { |
|
|
697 simple_help (); |
|
|
698 } |
|
|
699 else |
|
|
700 { |
|
1755
|
701 if (argv[1] == "-i") |
|
529
|
702 { |
|
1755
|
703 help_from_info (argv, 2, argc); |
|
529
|
704 } |
|
|
705 else |
|
|
706 { |
|
1140
|
707 builtin_help (argc, argv); |
|
529
|
708 } |
|
|
709 } |
|
|
710 |
|
|
711 return retval; |
|
|
712 } |
|
|
713 |
|
1957
|
714 DEFUN_TEXT (type, args, nargout, |
|
581
|
715 "type NAME ...]\n\ |
|
|
716 \n\ |
|
|
717 display the definition of each NAME that refers to a function") |
|
|
718 { |
|
2086
|
719 octave_value_list retval; |
|
581
|
720 |
|
1588
|
721 begin_unwind_frame ("Ftype"); |
|
|
722 |
|
2177
|
723 unwind_protect_str (Vps4); |
|
|
724 Vps4 = ""; |
|
1588
|
725 |
|
1755
|
726 int argc = args.length () + 1; |
|
|
727 |
|
1968
|
728 string_vector argv = args.make_argv ("type"); |
|
1755
|
729 |
|
|
730 if (error_state) |
|
|
731 return retval; |
|
581
|
732 |
|
|
733 if (argc > 1) |
|
|
734 { |
|
1358
|
735 // XXX FIXME XXX -- we should really use getopt () |
|
|
736 |
|
581
|
737 int quiet = 0; |
|
1755
|
738 int idx = 1; |
|
|
739 if (argv[idx] == "-q") |
|
581
|
740 { |
|
|
741 quiet = 1; |
|
1755
|
742 idx++; |
|
581
|
743 } |
|
|
744 |
|
|
745 ostrstream output_buf; |
|
|
746 |
|
1755
|
747 for (int i = idx; i < argc; i++) |
|
581
|
748 { |
|
1755
|
749 string id = argv[i]; |
|
|
750 string elts; |
|
581
|
751 |
|
1755
|
752 if (id[id.length () - 1] != '.') |
|
1281
|
753 { |
|
1755
|
754 size_t pos = id.find ('.'); |
|
|
755 |
|
|
756 if (pos != NPOS) |
|
1288
|
757 { |
|
1889
|
758 elts = id.substr (pos+1); |
|
1755
|
759 id = id.substr (0, pos); |
|
1288
|
760 } |
|
1281
|
761 } |
|
|
762 |
|
|
763 symbol_record *sym_rec = lookup_by_name (id, 0); |
|
581
|
764 |
|
|
765 if (sym_rec) |
|
|
766 { |
|
|
767 if (sym_rec->is_user_function ()) |
|
|
768 { |
|
|
769 tree_fvc *defn = sym_rec->def (); |
|
|
770 |
|
|
771 if (nargout == 0 && ! quiet) |
|
1755
|
772 output_buf << argv[i] << " is a user-defined function\n"; |
|
581
|
773 |
|
2124
|
774 tree_print_code tpc (output_buf); |
|
|
775 |
|
|
776 defn->accept (tpc); |
|
581
|
777 } |
|
|
778 |
|
1358
|
779 // XXX FIXME XXX -- this code should be shared with |
|
|
780 // Fwhich. |
|
581
|
781 |
|
|
782 else if (sym_rec->is_text_function ()) |
|
1755
|
783 output_buf << argv[i] << " is a builtin text-function\n"; |
|
581
|
784 else if (sym_rec->is_builtin_function ()) |
|
1755
|
785 output_buf << argv[i] << " is a builtin function\n"; |
|
1281
|
786 else if (sym_rec->is_user_variable () |
|
|
787 || sym_rec->is_builtin_variable ()) |
|
625
|
788 { |
|
|
789 tree_fvc *defn = sym_rec->def (); |
|
|
790 |
|
1288
|
791 assert (defn && defn->is_constant ()); |
|
1281
|
792 |
|
2371
|
793 tree_constant *tmp = (tree_constant *) defn; |
|
625
|
794 |
|
1281
|
795 int var_ok = 1; |
|
|
796 if (tmp && tmp->is_map ()) |
|
|
797 { |
|
1755
|
798 if (! elts.empty ()) |
|
1281
|
799 { |
|
2086
|
800 octave_value ult = |
|
1288
|
801 tmp->lookup_map_element (elts, 0, 1); |
|
625
|
802 |
|
1281
|
803 if (! ult.is_defined ()) |
|
|
804 var_ok = 0; |
|
|
805 } |
|
|
806 } |
|
1288
|
807 |
|
1281
|
808 if (nargout == 0 && ! quiet) |
|
|
809 { |
|
1288
|
810 if (var_ok) |
|
|
811 { |
|
1755
|
812 output_buf << argv[i]; |
|
1288
|
813 if (sym_rec->is_user_variable ()) |
|
|
814 output_buf << " is a user-defined variable\n"; |
|
|
815 else |
|
|
816 output_buf << " is a built-in variable\n"; |
|
|
817 } |
|
1281
|
818 else |
|
1288
|
819 { |
|
1755
|
820 if (! elts.empty ()) |
|
1288
|
821 output_buf << "type: structure `" << id |
|
|
822 << "' has no member `" << elts << "'\n"; |
|
|
823 else |
|
|
824 output_buf << "type: `" << id |
|
|
825 << "' has unknown type!"; |
|
|
826 } |
|
1281
|
827 } |
|
|
828 if (! tmp->is_map ()) |
|
|
829 { |
|
2124
|
830 tree_print_code tpc (output_buf); |
|
|
831 |
|
|
832 tmp->accept (tpc); |
|
625
|
833 |
|
1281
|
834 if (nargout == 0) |
|
|
835 output_buf << "\n"; |
|
|
836 } |
|
625
|
837 } |
|
581
|
838 else |
|
1755
|
839 output_buf << "type: `" << argv[i] << "' has unknown type!\n"; |
|
581
|
840 } |
|
|
841 else |
|
1755
|
842 output_buf << "type: `" << argv[i] << "' undefined\n"; |
|
581
|
843 } |
|
|
844 |
|
|
845 output_buf << ends; |
|
|
846 |
|
2095
|
847 char *s = output_buf.str (); |
|
|
848 |
|
581
|
849 if (nargout == 0) |
|
2095
|
850 octave_stdout << s; |
|
581
|
851 else |
|
2095
|
852 retval = s; |
|
|
853 |
|
|
854 delete [] s; |
|
581
|
855 } |
|
|
856 else |
|
|
857 print_usage ("type"); |
|
|
858 |
|
1588
|
859 run_unwind_frame ("Ftype"); |
|
|
860 |
|
581
|
861 return retval; |
|
|
862 } |
|
|
863 |
|
1957
|
864 DEFUN_TEXT (which, args, nargout, |
|
1565
|
865 "which NAME ...\n\ |
|
581
|
866 \n\ |
|
|
867 display the type of each NAME. If NAME is defined from an function\n\ |
|
|
868 file, print the full name of the file.") |
|
|
869 { |
|
2086
|
870 octave_value_list retval; |
|
581
|
871 |
|
1755
|
872 int argc = args.length () + 1; |
|
|
873 |
|
1968
|
874 string_vector argv = args.make_argv ("which"); |
|
1755
|
875 |
|
|
876 if (error_state) |
|
|
877 return retval; |
|
581
|
878 |
|
|
879 if (argc > 1) |
|
|
880 { |
|
|
881 if (nargout > 0) |
|
|
882 retval.resize (argc-1, Matrix ()); |
|
|
883 |
|
1755
|
884 for (int i = 1; i < argc; i++) |
|
581
|
885 { |
|
1755
|
886 symbol_record *sym_rec = lookup_by_name (argv[i], 0); |
|
581
|
887 |
|
|
888 if (sym_rec) |
|
|
889 { |
|
742
|
890 int print = (nargout == 0); |
|
2095
|
891 string tmp = print_symbol_type (octave_stdout, sym_rec, |
|
1755
|
892 argv[i], print); |
|
742
|
893 if (! print) |
|
|
894 retval(i) = tmp; |
|
581
|
895 } |
|
|
896 else |
|
|
897 { |
|
|
898 if (nargout == 0) |
|
2095
|
899 octave_stdout << "which: `" << argv[i] << "' is undefined\n"; |
|
581
|
900 else |
|
|
901 retval(i) = "undefined"; |
|
|
902 } |
|
|
903 } |
|
|
904 } |
|
|
905 else |
|
|
906 print_usage ("which"); |
|
|
907 |
|
|
908 return retval; |
|
|
909 } |
|
|
910 |
|
2189
|
911 static int |
|
|
912 suppress_verbose_help_message (void) |
|
|
913 { |
|
|
914 Vsuppress_verbose_help_message |
|
|
915 = check_preference ("suppress_verbose_help_message"); |
|
|
916 |
|
|
917 return 0; |
|
|
918 } |
|
|
919 |
|
2202
|
920 static int |
|
|
921 info_file (void) |
|
|
922 { |
|
|
923 int status = 0; |
|
|
924 |
|
|
925 string s = builtin_string_variable ("INFO_FILE"); |
|
|
926 |
|
|
927 if (s.empty ()) |
|
|
928 { |
|
|
929 gripe_invalid_value_specified ("INFO_FILE"); |
|
|
930 status = -1; |
|
|
931 } |
|
|
932 else |
|
|
933 Vinfo_file = s; |
|
|
934 |
|
|
935 return status; |
|
|
936 } |
|
|
937 |
|
|
938 static int |
|
|
939 info_prog (void) |
|
|
940 { |
|
|
941 int status = 0; |
|
|
942 |
|
|
943 string s = builtin_string_variable ("INFO_PROGRAM"); |
|
|
944 |
|
|
945 if (s.empty ()) |
|
|
946 { |
|
|
947 gripe_invalid_value_specified ("INFO_PROGRAM"); |
|
|
948 status = -1; |
|
|
949 } |
|
|
950 else |
|
|
951 Vinfo_prog = s; |
|
|
952 |
|
|
953 return status; |
|
|
954 } |
|
|
955 |
|
2189
|
956 void |
|
|
957 symbols_of_help (void) |
|
|
958 { |
|
2202
|
959 DEFVAR (INFO_FILE, Vinfo_file, 0, info_file, |
|
|
960 "name of the Octave info file"); |
|
|
961 |
|
|
962 DEFVAR (INFO_PROGRAM, Vinfo_prog, 0, info_prog, |
|
|
963 "name of the Octave info reader"); |
|
|
964 |
|
2189
|
965 #ifdef USE_GNU_INFO |
|
|
966 DEFVAR (suppress_verbose_help_message, 0.0, 0, suppress_verbose_help_message, |
|
|
967 "suppress printing of message pointing to additional help in the\n\ |
|
|
968 help and usage functions"); |
|
|
969 #endif |
|
|
970 } |
|
|
971 |
|
1
|
972 /* |
|
|
973 ;;; Local Variables: *** |
|
|
974 ;;; mode: C++ *** |
|
|
975 ;;; End: *** |
|
|
976 */ |
