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1 /* |
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2 |
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2847
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3 Copyright (C) 1996, 1997 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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1315
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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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2534
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34 #include <fstream.h> |
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1350
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35 #include <strstream.h> |
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36 |
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37 #ifdef HAVE_UNISTD_H |
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2442
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38 #ifdef HAVE_SYS_TYPES_H |
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1295
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39 #include <sys/types.h> |
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2442
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40 #endif |
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1295
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41 #include <unistd.h> |
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42 #endif |
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1343
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43 |
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2926
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44 #include "oct-env.h" |
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1755
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45 #include "str-vec.h" |
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46 |
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2492
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47 #include <defaults.h> |
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1352
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48 #include "defun.h" |
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49 #include "dirfns.h" |
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50 #include "error.h" |
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2233
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51 #include "fn-cache.h" |
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2202
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52 #include "gripes.h" |
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1352
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53 #include "help.h" |
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2177
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54 #include "input.h" |
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1755
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55 #include "oct-obj.h" |
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1352
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56 #include "pager.h" |
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1466
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57 #include "pathsearch.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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2694
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61 #include "syswait.h" |
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1755
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62 #include "toplev.h" |
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1588
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63 #include "unwind-prot.h" |
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242
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64 #include "utils.h" |
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1352
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65 #include "variables.h" |
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66 |
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2202
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67 // Name of the info file specified on command line. |
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68 // (--info-file file) |
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69 string Vinfo_file; |
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70 |
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71 // Name of the info reader we'd like to use. |
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72 // (--info-program program) |
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73 string Vinfo_prog; |
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74 |
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2189
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75 // If TRUE, don't print additional help message in help and usage |
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76 // functions. |
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77 static bool Vsuppress_verbose_help_message; |
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78 |
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1
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79 static help_list operators[] = |
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80 { |
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81 { "!", |
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82 "Logical not operator. See also `~'.\n", }, |
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83 |
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84 { "!=", |
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85 "Logical not equals operator. See also `~' and `<>'.\n", }, |
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86 |
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87 { "\"", |
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88 "String delimiter.\n", }, |
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89 |
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90 { "#", |
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928
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91 "Begin comment character. See also `%'.", }, |
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1
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92 |
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93 { "%", |
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928
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94 "Begin comment charcter. See also `#'.", }, |
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1
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95 |
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96 { "&", |
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928
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97 "Logical and operator. See also `&&'.", }, |
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98 |
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99 { "&&", |
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928
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100 "Logical and operator. See also `&'.", }, |
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1
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101 |
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102 { "'", |
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103 "Matrix transpose operator. For complex matrices, computes the\n\ |
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104 complex conjugate (Hermitian) transpose. See also `.''\n\ |
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105 \n\ |
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106 The single quote character may also be used to delimit strings, but\n\ |
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107 it is better to use the double quote character, since that is never\n\ |
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928
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108 ambiguous", }, |
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1
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109 |
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110 { "(", |
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928
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111 "Array index or function argument delimiter.", }, |
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1
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112 |
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113 { ")", |
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928
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114 "Array index or function argument delimiter.", }, |
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115 |
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116 { "*", |
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928
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117 "Multiplication operator. See also `.*'", }, |
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1
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118 |
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119 { "**", |
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928
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120 "Power operator. See also `^', `.**', and `.^'", }, |
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121 |
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122 { "+", |
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928
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123 "Addition operator.", }, |
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124 |
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125 { "++", |
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928
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126 "Increment operator. As in C, may be applied as a prefix or postfix operator.", }, |
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127 |
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128 { ",", |
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928
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129 "Array index, function argument, or command separator.", }, |
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1
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130 |
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131 { "-", |
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928
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132 "Subtraction or unary negation operator.", }, |
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133 |
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134 { "--", |
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928
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135 "Decrement operator. As in C, may be applied as a prefix or postfix operator.", }, |
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136 |
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137 { ".'", |
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138 "Matrix transpose operator. For complex matrices, computes the\n\ |
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928
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139 transpose, *not* the complex conjugate transpose. See also `''.", }, |
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140 |
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141 { ".*", |
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928
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142 "Element by element multiplication operator. See also `*'.", }, |
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143 |
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144 { ".**", |
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928
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145 "Element by element power operator. See also `**', `^', and `.^'.", }, |
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1
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146 |
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147 { "./", |
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928
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148 "Element by element division operator. See also `/' and `\\'.", }, |
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149 |
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150 { ".^", |
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928
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151 "Element by element power operator. See also `**', `^', and `.^'.", }, |
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152 |
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153 { "/", |
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928
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154 "Right division. See also `\\' and `./'.", }, |
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155 |
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156 { ":", |
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928
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157 "Select entire rows or columns of matrices.", }, |
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158 |
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159 { ";", |
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928
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160 "Array row or command separator. See also `,'.", }, |
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161 |
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162 { "<", |
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928
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163 "Less than operator.", }, |
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164 |
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165 { "<=", |
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928
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166 "Less than or equals operator.", }, |
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1
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167 |
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168 { "<>", |
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928
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169 "Logical not equals operator. See also `!=' and `~='.", }, |
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1
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170 |
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171 { "=", |
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928
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172 "Assignment operator.", }, |
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173 |
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174 { "==", |
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928
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175 "Equality test operator.", }, |
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1
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176 |
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177 { ">", |
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928
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178 "Greater than operator.", }, |
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1
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179 |
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180 { ">=", |
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928
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181 "Greater than or equals operator.", }, |
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1
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182 |
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183 { "[", |
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928
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184 "Return list delimiter. See also `]'.", }, |
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185 |
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186 { "\\", |
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928
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187 "Left division operator. See also `/' and `./'.", }, |
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1
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188 |
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189 { "]", |
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928
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190 "Return list delimiter. See also `['.", }, |
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1
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191 |
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192 { "^", |
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928
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193 "Power operator. See also `**', `.^', and `.**.'", }, |
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194 |
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195 { "|", |
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928
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196 "Logical or operator. See also `||'.", }, |
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197 |
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198 { "||", |
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928
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199 "Logical or operator. See also `|'.", }, |
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1
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200 |
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201 { "~", |
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928
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202 "Logical not operator. See also `!' and `~'.", }, |
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203 |
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204 { "~=", |
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928
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205 "Logical not equals operator. See also `<>' and `!='.", }, |
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1
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206 |
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529
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207 { 0, 0, }, |
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1
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208 }; |
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209 |
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210 static help_list keywords[] = |
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211 { |
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928
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212 { "all_va_args", |
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213 "Pass all unnamed arguments to another function call.", }, |
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214 |
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215 { "break", |
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216 "Exit the innermost enclosing while or for loop.", }, |
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217 |
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218 { "catch", |
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219 "begin the cleanup part of a try-catch block", }, |
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220 |
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221 { "continue", |
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222 "Jump to the end of the innermost enclosing while or for loop.", }, |
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223 |
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224 { "else", |
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225 "Alternate action for an if block.", }, |
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226 |
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227 { "elseif", |
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928
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228 "Alternate conditional test for an if block.", }, |
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229 |
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230 { "end", |
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928
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231 "Mark the end of any for, if, while, or function block.", }, |
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232 |
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233 { "end_try_catch", |
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234 "Mark the end of an try-catch block.", }, |
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235 |
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928
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236 { "end_unwind_protect", |
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237 "Mark the end of an unwind_protect block.", }, |
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238 |
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239 { "endfor", |
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240 "Mark the end of a for loop.", }, |
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241 |
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242 { "endfunction", |
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928
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243 "Mark the end of a function.", }, |
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244 |
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245 { "endif", |
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928
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246 "Mark the end of an if block.", }, |
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247 |
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248 { "endwhile", |
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249 "Mark the end of a while loop.", }, |
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250 |
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251 { "for", |
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928
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252 "Begin a for loop.", }, |
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253 |
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254 { "function", |
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928
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255 "Begin a function body.", }, |
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256 |
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257 { "global", |
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928
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258 "Declare variables to have global scope.", }, |
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259 |
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260 { "gplot", |
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261 "Produce 2-D plots using gnuplot-like command syntax.", }, |
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262 |
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263 { "gsplot", |
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264 "Produce 3-D plots using gnuplot-like command syntax.", }, |
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265 |
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266 { "if", |
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267 "Begin an if block.", }, |
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268 |
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269 { "return", |
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928
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270 "Return from a function.", }, |
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271 |
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272 { "try", |
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273 "Begin a try-catch block.", }, |
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274 |
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928
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275 { "unwind_protect", |
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276 "Begin an unwind_protect block.", }, |
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277 |
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278 { "unwind_protect_cleanup", |
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279 "Begin the cleanup section of an unwind_protect block.", }, |
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280 |
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281 { "while", |
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928
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282 "Begin a while loop.", }, |
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283 |
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529
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284 { 0, 0, }, |
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1
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285 }; |
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286 |
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581
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287 // Return a copy of the operator or keyword names. |
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288 |
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289 string_vector |
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290 names (help_list *lst, int& count) |
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291 { |
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292 string_vector retval; |
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293 |
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294 count = 0; |
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295 help_list *ptr = lst; |
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529
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296 while (ptr->name) |
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1
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297 { |
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298 count++; |
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299 ptr++; |
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300 } |
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301 |
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1755
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302 if (count > 0) |
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303 { |
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304 retval.resize (count); |
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305 |
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306 ptr = lst; |
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307 for (int i = 0; i < count; i++) |
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308 { |
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309 retval[i] = ptr->name; |
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310 ptr++; |
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311 } |
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1
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312 } |
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313 |
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1755
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314 return retval; |
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315 } |
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316 |
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317 help_list * |
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318 operator_help (void) |
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319 { |
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320 return operators; |
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321 } |
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322 |
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323 help_list * |
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324 keyword_help (void) |
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325 { |
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326 return keywords; |
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327 } |
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328 |
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2470
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329 #if defined (USE_GNU_INFO) |
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330 static void |
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331 additional_help_message (ostream& os) |
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332 { |
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333 if (! Vsuppress_verbose_help_message) |
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334 os << "\n\ |
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1115
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335 Additional help for builtin functions, operators, and variables\n\ |
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336 is available in the on-line version of the manual.\n\ |
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337 \n\ |
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2470
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338 Use the command `help -i <topic>' to search the manual index.\n"; |
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339 } |
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340 #else |
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1115
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341 static void |
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2470
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342 additional_help_message (ostream&) |
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542
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343 { |
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2470
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344 } |
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1140
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345 #endif |
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542
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346 |
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347 void |
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1755
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348 print_usage (const string& nm, int just_usage) |
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542
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349 { |
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2856
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350 symbol_record *sym_rec = global_sym_tab->lookup (nm); |
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542
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351 if (sym_rec) |
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352 { |
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1755
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353 string h = sym_rec->help (); |
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354 |
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355 if (h.length () > 0) |
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542
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356 { |
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2095
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357 octave_stdout << "\n*** " << nm << ":\n\n" |
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542
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358 << h << "\n"; |
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359 |
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1117
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360 if (! just_usage) |
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2095
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361 additional_help_message (octave_stdout); |
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542
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362 } |
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363 } |
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1023
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364 else |
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1755
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365 warning ("no usage message found for `%s'", nm.c_str ()); |
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542
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366 } |
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367 |
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529
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368 static void |
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2095
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369 display_names_from_help_list (ostream& os, help_list *list, |
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542
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370 const char *desc) |
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529
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371 { |
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372 int count = 0; |
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1755
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373 string_vector symbols = names (list, count); |
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1808
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374 if (! symbols.empty ()) |
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375 { |
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2095
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376 os << "\n*** " << desc << ":\n\n"; |
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377 symbols.list_in_columns (os); |
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1808
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378 } |
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529
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379 } |
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380 |
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1755
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381 static string |
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2095
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382 print_symbol_type (ostream& os, symbol_record *sym_rec, |
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1755
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383 const string& name, int print) |
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742
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384 { |
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1755
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385 string retval; |
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742
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386 |
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387 if (sym_rec->is_user_function ()) |
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388 { |
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2891
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389 octave_symbol *defn = sym_rec->def (); |
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1755
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390 |
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391 string fn = defn->fcn_file_name (); |
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392 |
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393 if (! fn.empty ()) |
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742
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394 { |
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1755
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395 string ff = fcn_file_in_path (fn); |
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396 |
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397 ff = ff.length () > 0 ? ff : fn; |
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742
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398 |
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399 if (print) |
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2095
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400 os << name |
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401 << " is the function defined from:\n" |
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402 << ff << "\n"; |
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742
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403 else |
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404 retval = ff; |
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405 } |
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406 else |
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407 { |
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408 if (print) |
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2095
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409 os << name << " is a user-defined function\n"; |
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742
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410 else |
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411 retval = "user-defined function"; |
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412 } |
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413 } |
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414 else if (sym_rec->is_text_function ()) |
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415 { |
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416 if (print) |
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2095
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417 os << name << " is a builtin text-function\n"; |
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742
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418 else |
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419 retval = "builtin text-function"; |
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420 } |
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421 else if (sym_rec->is_builtin_function ()) |
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422 { |
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423 if (print) |
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2095
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424 os << name << " is a builtin function\n"; |
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742
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425 else |
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426 retval = "builtin function"; |
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427 } |
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428 else if (sym_rec->is_user_variable ()) |
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429 { |
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430 if (print) |
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2095
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431 os << name << " is a user-defined variable\n"; |
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742
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432 else |
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433 retval = "user-defined variable"; |
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434 } |
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435 else if (sym_rec->is_builtin_variable ()) |
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436 { |
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437 if (print) |
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2095
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438 os << name << " is a builtin variable\n"; |
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742
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439 else |
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440 retval = "builtin variable"; |
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441 } |
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442 else |
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443 { |
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444 if (print) |
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2095
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445 os << "which: `" << name << "' has unknown type\n"; |
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742
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446 else |
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447 retval = "unknown type"; |
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448 } |
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449 |
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450 return retval; |
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451 } |
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452 |
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529
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453 static void |
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2095
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454 display_symtab_names (ostream& os, const string_vector& names, |
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1755
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455 int /* count */, const string& desc) |
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542
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456 { |
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1808
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457 if (! names.empty ()) |
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458 { |
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2095
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459 os << "\n*** " << desc << ":\n\n"; |
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460 names.list_in_columns (os); |
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1808
|
461 } |
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542
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462 } |
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463 |
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464 static void |
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529
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465 simple_help (void) |
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466 { |
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2095
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467 display_names_from_help_list (octave_stdout, operator_help (), |
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542
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468 "operators"); |
|
529
|
469 |
|
2095
|
470 display_names_from_help_list (octave_stdout, keyword_help (), |
|
542
|
471 "reserved words"); |
|
529
|
472 |
|
542
|
473 #ifdef LIST_SYMBOLS |
|
|
474 #undef LIST_SYMBOLS |
|
|
475 #endif |
|
|
476 #define LIST_SYMBOLS(type, msg) \ |
|
|
477 do \ |
|
|
478 { \ |
|
|
479 int count; \ |
|
1755
|
480 string_vector names = global_sym_tab->list (count, 0, 0, 1, type); \ |
|
2095
|
481 display_symtab_names (octave_stdout, names, count, msg); \ |
|
542
|
482 } \ |
|
|
483 while (0) |
|
529
|
484 |
|
1358
|
485 // XXX FIXME XXX -- is this distinction needed? |
|
|
486 |
|
542
|
487 LIST_SYMBOLS (symbol_def::TEXT_FUNCTION, |
|
|
488 "text functions (these names are also reserved)"); |
|
529
|
489 |
|
542
|
490 LIST_SYMBOLS (symbol_def::MAPPER_FUNCTION, "mapper functions"); |
|
|
491 |
|
|
492 LIST_SYMBOLS (symbol_def::BUILTIN_FUNCTION, "general functions"); |
|
|
493 |
|
|
494 LIST_SYMBOLS (symbol_def::BUILTIN_VARIABLE, "builtin variables"); |
|
|
495 |
|
1358
|
496 // Also need to list variables and currently compiled functions from |
|
|
497 // the symbol table, if there are any. |
|
529
|
498 |
|
1358
|
499 // Also need to search octave_path for script files. |
|
529
|
500 |
|
2202
|
501 dir_path p (Vload_path); |
|
529
|
502 |
|
1787
|
503 string_vector dirs = p.all_directories (); |
|
679
|
504 |
|
1787
|
505 int len = dirs.length (); |
|
679
|
506 |
|
1787
|
507 for (int i = 0; i < len; i++) |
|
|
508 { |
|
2233
|
509 string_vector names = octave_fcn_file_name_cache::list (dirs[i]); |
|
679
|
510 |
|
1787
|
511 if (! names.empty ()) |
|
|
512 { |
|
2926
|
513 string dir |
|
|
514 = octave_env::make_absolute (dirs[i], octave_env::getcwd ()); |
|
|
515 |
|
|
516 octave_stdout << "\n*** function files in " << dir << ":\n\n"; |
|
679
|
517 |
|
2095
|
518 names.list_in_columns (octave_stdout); |
|
529
|
519 } |
|
|
520 } |
|
|
521 |
|
2095
|
522 additional_help_message (octave_stdout); |
|
529
|
523 } |
|
|
524 |
|
2470
|
525 #if defined (USE_GNU_INFO) |
|
529
|
526 static int |
|
1755
|
527 try_info (const string& nm) |
|
529
|
528 { |
|
|
529 int status = 0; |
|
|
530 |
|
1295
|
531 static char *cmd_str = 0; |
|
|
532 |
|
|
533 delete [] cmd_str; |
|
|
534 cmd_str = 0; |
|
|
535 |
|
|
536 ostrstream cmd_buf; |
|
|
537 |
|
2202
|
538 cmd_buf << Vinfo_prog << " --file " << Vinfo_file; |
|
1295
|
539 |
|
2202
|
540 string directory_name = Vinfo_file; |
|
1755
|
541 size_t pos = directory_name.rfind ('/'); |
|
|
542 |
|
|
543 if (pos != NPOS) |
|
529
|
544 { |
|
1755
|
545 directory_name.resize (pos + 1); |
|
1295
|
546 cmd_buf << " --directory " << directory_name; |
|
529
|
547 } |
|
|
548 |
|
1755
|
549 if (nm.length () > 0) |
|
|
550 cmd_buf << " --index-search " << nm; |
|
529
|
551 |
|
1295
|
552 cmd_buf << ends; |
|
529
|
553 |
|
1295
|
554 cmd_str = cmd_buf.str (); |
|
529
|
555 |
|
2705
|
556 volatile octave_interrupt_handler old_interrupt_handler |
|
2554
|
557 = octave_ignore_interrupts (); |
|
529
|
558 |
|
1295
|
559 status = system (cmd_str); |
|
529
|
560 |
|
2554
|
561 octave_set_interrupt_handler (old_interrupt_handler); |
|
529
|
562 |
|
2694
|
563 if (WIFEXITED (status)) |
|
|
564 status = WEXITSTATUS (status); |
|
1295
|
565 else |
|
|
566 status = 127; |
|
529
|
567 |
|
|
568 return status; |
|
|
569 } |
|
1140
|
570 |
|
|
571 static void |
|
1755
|
572 help_from_info (const string_vector& argv, int idx, int argc) |
|
1140
|
573 { |
|
1755
|
574 if (idx == argc) |
|
|
575 try_info (string ()); |
|
1140
|
576 else |
|
|
577 { |
|
1755
|
578 for (int i = idx; i < argc; i++) |
|
1140
|
579 { |
|
1755
|
580 int status = try_info (argv[i]); |
|
1140
|
581 |
|
1295
|
582 if (status) |
|
1140
|
583 { |
|
1295
|
584 if (status < 0) |
|
|
585 { |
|
|
586 message ("help", |
|
|
587 "sorry, `%s' is not indexed in the manual", |
|
1755
|
588 argv[i].c_str ()); |
|
1295
|
589 sleep (2); |
|
|
590 } |
|
|
591 else |
|
|
592 { |
|
|
593 error ("help: unable to find info!"); |
|
|
594 break; |
|
|
595 } |
|
1140
|
596 } |
|
|
597 } |
|
|
598 } |
|
2470
|
599 } |
|
1140
|
600 #else |
|
2470
|
601 static void |
|
|
602 help_from_info (const string_vector&, int, int) |
|
|
603 { |
|
1140
|
604 message (0, "sorry, help -i is not available in this version of Octave"); |
|
2470
|
605 } |
|
1140
|
606 #endif |
|
529
|
607 |
|
542
|
608 int |
|
2095
|
609 help_from_list (ostream& os, const help_list *list, |
|
1755
|
610 const string& nm, int usage) |
|
542
|
611 { |
|
2804
|
612 const char *name; |
|
542
|
613 while ((name = list->name) != 0) |
|
|
614 { |
|
1755
|
615 if (strcmp (name, nm.c_str ()) == 0) |
|
542
|
616 { |
|
|
617 if (usage) |
|
2095
|
618 os << "\nusage: "; |
|
542
|
619 else |
|
|
620 { |
|
2095
|
621 os << "\n*** " << nm << ":\n\n"; |
|
542
|
622 } |
|
|
623 |
|
2095
|
624 os << list->help << "\n"; |
|
542
|
625 |
|
|
626 return 1; |
|
|
627 } |
|
|
628 list++; |
|
|
629 } |
|
|
630 return 0; |
|
|
631 } |
|
|
632 |
|
1140
|
633 static void |
|
1755
|
634 builtin_help (int argc, const string_vector& argv) |
|
1140
|
635 { |
|
|
636 help_list *op_help_list = operator_help (); |
|
|
637 help_list *kw_help_list = keyword_help (); |
|
|
638 |
|
1755
|
639 for (int i = 1; i < argc; i++) |
|
1140
|
640 { |
|
2095
|
641 if (help_from_list (octave_stdout, op_help_list, argv[i], 0)) |
|
1140
|
642 continue; |
|
|
643 |
|
2095
|
644 if (help_from_list (octave_stdout, kw_help_list, argv[i], 0)) |
|
1140
|
645 continue; |
|
|
646 |
|
1755
|
647 symbol_record *sym_rec = lookup_by_name (argv[i], 0); |
|
1140
|
648 |
|
|
649 if (sym_rec && sym_rec->is_defined ()) |
|
|
650 { |
|
1755
|
651 string h = sym_rec->help (); |
|
|
652 |
|
|
653 if (h.length () > 0) |
|
1140
|
654 { |
|
2095
|
655 print_symbol_type (octave_stdout, sym_rec, argv[i], 1); |
|
|
656 octave_stdout << "\n" << h << "\n"; |
|
1140
|
657 continue; |
|
|
658 } |
|
|
659 } |
|
|
660 |
|
1755
|
661 string path = fcn_file_in_path (argv[i]); |
|
|
662 |
|
|
663 string h = get_help_from_file (path); |
|
|
664 |
|
|
665 if (! h.empty ()) |
|
1140
|
666 { |
|
2095
|
667 octave_stdout << argv[i] << " is the file:\n" |
|
1140
|
668 << path << "\n\n" << h << "\n"; |
|
1755
|
669 |
|
1140
|
670 continue; |
|
|
671 } |
|
|
672 |
|
2095
|
673 octave_stdout << "\nhelp: sorry, `" << argv[i] |
|
|
674 << "' is not documented\n"; |
|
1140
|
675 } |
|
|
676 |
|
2095
|
677 additional_help_message (octave_stdout); |
|
1140
|
678 } |
|
|
679 |
|
2470
|
680 #if defined (USE_GNU_INFO) |
|
1957
|
681 DEFUN_TEXT (help, args, , |
|
529
|
682 "help [-i] [topic ...]\n\ |
|
|
683 \n\ |
|
|
684 print cryptic yet witty messages") |
|
1140
|
685 #else |
|
1957
|
686 DEFUN_TEXT (help, args, , |
|
1140
|
687 "help [topic ...]\n\ |
|
|
688 \n\ |
|
|
689 print cryptic yet witty messages") |
|
|
690 #endif |
|
529
|
691 { |
|
2086
|
692 octave_value_list retval; |
|
529
|
693 |
|
1755
|
694 int argc = args.length () + 1; |
|
|
695 |
|
1968
|
696 string_vector argv = args.make_argv ("help"); |
|
1755
|
697 |
|
|
698 if (error_state) |
|
|
699 return retval; |
|
529
|
700 |
|
|
701 if (argc == 1) |
|
|
702 { |
|
|
703 simple_help (); |
|
|
704 } |
|
|
705 else |
|
|
706 { |
|
1755
|
707 if (argv[1] == "-i") |
|
529
|
708 { |
|
1755
|
709 help_from_info (argv, 2, argc); |
|
529
|
710 } |
|
|
711 else |
|
|
712 { |
|
1140
|
713 builtin_help (argc, argv); |
|
529
|
714 } |
|
|
715 } |
|
|
716 |
|
|
717 return retval; |
|
|
718 } |
|
|
719 |
|
1957
|
720 DEFUN_TEXT (type, args, nargout, |
|
581
|
721 "type NAME ...]\n\ |
|
|
722 \n\ |
|
|
723 display the definition of each NAME that refers to a function") |
|
|
724 { |
|
2086
|
725 octave_value_list retval; |
|
581
|
726 |
|
1588
|
727 begin_unwind_frame ("Ftype"); |
|
|
728 |
|
1755
|
729 int argc = args.length () + 1; |
|
|
730 |
|
1968
|
731 string_vector argv = args.make_argv ("type"); |
|
1755
|
732 |
|
|
733 if (error_state) |
|
|
734 return retval; |
|
581
|
735 |
|
|
736 if (argc > 1) |
|
|
737 { |
|
1358
|
738 // XXX FIXME XXX -- we should really use getopt () |
|
|
739 |
|
2532
|
740 bool quiet = false; |
|
|
741 bool pr_orig_txt = true; |
|
|
742 |
|
|
743 int idx; |
|
|
744 |
|
|
745 for (idx = 1; idx < argc; idx++) |
|
581
|
746 { |
|
2532
|
747 if (argv[idx] == "-q" || argv[idx] == "-quiet") |
|
|
748 quiet = true; |
|
|
749 else if (argv[idx] == "-t" || argv[idx] == "-transformed") |
|
|
750 pr_orig_txt = false; |
|
|
751 else |
|
|
752 break; |
|
|
753 } |
|
|
754 |
|
|
755 if (idx == argc) |
|
|
756 { |
|
|
757 print_usage ("type"); |
|
|
758 return retval; |
|
581
|
759 } |
|
|
760 |
|
|
761 ostrstream output_buf; |
|
|
762 |
|
1755
|
763 for (int i = idx; i < argc; i++) |
|
581
|
764 { |
|
1755
|
765 string id = argv[i]; |
|
|
766 string elts; |
|
581
|
767 |
|
1755
|
768 if (id[id.length () - 1] != '.') |
|
1281
|
769 { |
|
1755
|
770 size_t pos = id.find ('.'); |
|
|
771 |
|
|
772 if (pos != NPOS) |
|
1288
|
773 { |
|
1889
|
774 elts = id.substr (pos+1); |
|
1755
|
775 id = id.substr (0, pos); |
|
1288
|
776 } |
|
1281
|
777 } |
|
|
778 |
|
|
779 symbol_record *sym_rec = lookup_by_name (id, 0); |
|
581
|
780 |
|
|
781 if (sym_rec) |
|
|
782 { |
|
|
783 if (sym_rec->is_user_function ()) |
|
|
784 { |
|
2891
|
785 octave_symbol *defn = sym_rec->def (); |
|
581
|
786 |
|
2534
|
787 string fn = defn->fcn_file_name (); |
|
|
788 string ff = fcn_file_in_path (fn); |
|
|
789 |
|
|
790 if (pr_orig_txt && ! ff.empty ()) |
|
|
791 { |
|
|
792 ifstream fs (ff.c_str (), ios::in); |
|
|
793 |
|
|
794 if (fs) |
|
|
795 { |
|
|
796 if (nargout == 0 && ! quiet) |
|
|
797 output_buf << argv[i] |
|
|
798 << " is the function defined from:\n" |
|
|
799 << ff << "\n\n"; |
|
|
800 |
|
|
801 char ch; |
|
581
|
802 |
|
2534
|
803 while (fs.get (ch)) |
|
|
804 output_buf << ch; |
|
|
805 } |
|
|
806 else |
|
|
807 output_buf << "unable to open `" << ff |
|
|
808 << "' for reading!\n"; |
|
|
809 } |
|
|
810 else |
|
|
811 { |
|
|
812 if (nargout == 0 && ! quiet) |
|
|
813 output_buf << argv[i] |
|
|
814 << " is a user-defined function:\n\n"; |
|
2124
|
815 |
|
2534
|
816 tree_print_code tpc (output_buf, "", pr_orig_txt); |
|
|
817 |
|
2891
|
818 // XXX FIXME XXX |
|
|
819 // defn->accept (tpc); |
|
2534
|
820 } |
|
581
|
821 } |
|
|
822 |
|
1358
|
823 // XXX FIXME XXX -- this code should be shared with |
|
|
824 // Fwhich. |
|
581
|
825 |
|
|
826 else if (sym_rec->is_text_function ()) |
|
1755
|
827 output_buf << argv[i] << " is a builtin text-function\n"; |
|
581
|
828 else if (sym_rec->is_builtin_function ()) |
|
1755
|
829 output_buf << argv[i] << " is a builtin function\n"; |
|
1281
|
830 else if (sym_rec->is_user_variable () |
|
|
831 || sym_rec->is_builtin_variable ()) |
|
625
|
832 { |
|
2891
|
833 octave_symbol *defn = sym_rec->def (); |
|
625
|
834 |
|
1288
|
835 assert (defn && defn->is_constant ()); |
|
1281
|
836 |
|
|
837 int var_ok = 1; |
|
2875
|
838 |
|
|
839 // XXX FIXME XXX -- need to handle structure |
|
|
840 // references correctly. |
|
|
841 |
|
2900
|
842 if (defn) |
|
1281
|
843 { |
|
2900
|
844 octave_value vtmp = defn->eval (); |
|
625
|
845 |
|
2875
|
846 if (vtmp.is_map ()) |
|
|
847 error ("type: operations on structs not implemented"); |
|
1281
|
848 } |
|
1288
|
849 |
|
2875
|
850 if (! error_state) |
|
1281
|
851 { |
|
2875
|
852 if (nargout == 0 && ! quiet) |
|
1288
|
853 { |
|
2875
|
854 if (var_ok) |
|
|
855 { |
|
|
856 output_buf << argv[i]; |
|
|
857 if (sym_rec->is_user_variable ()) |
|
|
858 output_buf << " is a user-defined variable\n"; |
|
|
859 else |
|
|
860 output_buf << " is a built-in variable\n"; |
|
|
861 } |
|
1288
|
862 else |
|
2875
|
863 { |
|
|
864 if (! elts.empty ()) |
|
|
865 output_buf << "type: structure `" << id |
|
|
866 << "' has no member `" << elts |
|
|
867 << "'\n"; |
|
|
868 else |
|
|
869 output_buf << "type: `" << id |
|
|
870 << "' has unknown type!\n"; |
|
|
871 } |
|
1288
|
872 } |
|
2875
|
873 |
|
2532
|
874 tree_print_code tpc (output_buf, "", pr_orig_txt); |
|
2124
|
875 |
|
2891
|
876 // XXX FIXME XXX |
|
2900
|
877 // defn->accept (tpc); |
|
625
|
878 |
|
1281
|
879 if (nargout == 0) |
|
|
880 output_buf << "\n"; |
|
|
881 } |
|
625
|
882 } |
|
581
|
883 else |
|
1755
|
884 output_buf << "type: `" << argv[i] << "' has unknown type!\n"; |
|
581
|
885 } |
|
|
886 else |
|
1755
|
887 output_buf << "type: `" << argv[i] << "' undefined\n"; |
|
581
|
888 } |
|
|
889 |
|
|
890 output_buf << ends; |
|
|
891 |
|
2095
|
892 char *s = output_buf.str (); |
|
|
893 |
|
581
|
894 if (nargout == 0) |
|
2095
|
895 octave_stdout << s; |
|
581
|
896 else |
|
2095
|
897 retval = s; |
|
|
898 |
|
|
899 delete [] s; |
|
581
|
900 } |
|
|
901 else |
|
|
902 print_usage ("type"); |
|
|
903 |
|
|
904 return retval; |
|
|
905 } |
|
|
906 |
|
1957
|
907 DEFUN_TEXT (which, args, nargout, |
|
1565
|
908 "which NAME ...\n\ |
|
581
|
909 \n\ |
|
|
910 display the type of each NAME. If NAME is defined from an function\n\ |
|
|
911 file, print the full name of the file.") |
|
|
912 { |
|
2086
|
913 octave_value_list retval; |
|
581
|
914 |
|
1755
|
915 int argc = args.length () + 1; |
|
|
916 |
|
1968
|
917 string_vector argv = args.make_argv ("which"); |
|
1755
|
918 |
|
|
919 if (error_state) |
|
|
920 return retval; |
|
581
|
921 |
|
|
922 if (argc > 1) |
|
|
923 { |
|
|
924 if (nargout > 0) |
|
|
925 retval.resize (argc-1, Matrix ()); |
|
|
926 |
|
1755
|
927 for (int i = 1; i < argc; i++) |
|
581
|
928 { |
|
1755
|
929 symbol_record *sym_rec = lookup_by_name (argv[i], 0); |
|
581
|
930 |
|
|
931 if (sym_rec) |
|
|
932 { |
|
742
|
933 int print = (nargout == 0); |
|
2095
|
934 string tmp = print_symbol_type (octave_stdout, sym_rec, |
|
1755
|
935 argv[i], print); |
|
742
|
936 if (! print) |
|
|
937 retval(i) = tmp; |
|
581
|
938 } |
|
|
939 else |
|
|
940 { |
|
|
941 if (nargout == 0) |
|
2095
|
942 octave_stdout << "which: `" << argv[i] << "' is undefined\n"; |
|
581
|
943 else |
|
|
944 retval(i) = "undefined"; |
|
|
945 } |
|
|
946 } |
|
|
947 } |
|
|
948 else |
|
|
949 print_usage ("which"); |
|
|
950 |
|
|
951 return retval; |
|
|
952 } |
|
|
953 |
|
2189
|
954 static int |
|
|
955 suppress_verbose_help_message (void) |
|
|
956 { |
|
|
957 Vsuppress_verbose_help_message |
|
|
958 = check_preference ("suppress_verbose_help_message"); |
|
|
959 |
|
|
960 return 0; |
|
|
961 } |
|
|
962 |
|
2202
|
963 static int |
|
|
964 info_file (void) |
|
|
965 { |
|
|
966 int status = 0; |
|
|
967 |
|
|
968 string s = builtin_string_variable ("INFO_FILE"); |
|
|
969 |
|
|
970 if (s.empty ()) |
|
|
971 { |
|
|
972 gripe_invalid_value_specified ("INFO_FILE"); |
|
|
973 status = -1; |
|
|
974 } |
|
|
975 else |
|
|
976 Vinfo_file = s; |
|
|
977 |
|
|
978 return status; |
|
|
979 } |
|
|
980 |
|
|
981 static int |
|
|
982 info_prog (void) |
|
|
983 { |
|
|
984 int status = 0; |
|
|
985 |
|
|
986 string s = builtin_string_variable ("INFO_PROGRAM"); |
|
|
987 |
|
|
988 if (s.empty ()) |
|
|
989 { |
|
|
990 gripe_invalid_value_specified ("INFO_PROGRAM"); |
|
|
991 status = -1; |
|
|
992 } |
|
|
993 else |
|
|
994 Vinfo_prog = s; |
|
|
995 |
|
|
996 return status; |
|
|
997 } |
|
|
998 |
|
2189
|
999 void |
|
|
1000 symbols_of_help (void) |
|
|
1001 { |
|
2202
|
1002 DEFVAR (INFO_FILE, Vinfo_file, 0, info_file, |
|
|
1003 "name of the Octave info file"); |
|
|
1004 |
|
|
1005 DEFVAR (INFO_PROGRAM, Vinfo_prog, 0, info_prog, |
|
|
1006 "name of the Octave info reader"); |
|
|
1007 |
|
2189
|
1008 DEFVAR (suppress_verbose_help_message, 0.0, 0, suppress_verbose_help_message, |
|
|
1009 "suppress printing of message pointing to additional help in the\n\ |
|
|
1010 help and usage functions"); |
|
|
1011 } |
|
|
1012 |
|
1
|
1013 /* |
|
|
1014 ;;; Local Variables: *** |
|
|
1015 ;;; mode: C++ *** |
|
|
1016 ;;; End: *** |
|
|
1017 */ |
