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annotate scripts/help/type.m @ 20727:4479d73eac72

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Fix error when building annotation objects in gnuplot (bug #46035) * __gnuplot_draw_figure__.m: ignore uicontextmenu objects.
author Pantxo Diribarne <pantxo.diribarne@gmail.com>
date Sat, 26 Sep 2015 11:26:18 +0200
parents abf85f8cbd6c
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 ## Copyright (C) 2009-2015 Søren Hauberg
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2 ##
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3 ## This file is part of Octave.
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4 ##
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5 ## Octave is free software; you can redistribute it and/or modify it
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6 ## under the terms of the GNU General Public License as published by
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7 ## the Free Software Foundation; either version 3 of the License, or (at
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8 ## your option) any later version.
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9 ##
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10 ## Octave is distributed in the hope that it will be useful, but
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11 ## WITHOUT ANY WARRANTY; without even the implied warranty of
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12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 ## General Public License for more details.
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14 ##
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15 ## You should have received a copy of the GNU General Public License
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16 ## along with Octave; see the file COPYING. If not, see
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17 ## <http://www.gnu.org/licenses/>.
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18
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19 ## -*- texinfo -*-
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20 ## @deftypefn {Command} {} type @var{name} @dots{}
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21 ## @deftypefnx {Command} {} type -q @var{name} @dots{}
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22 ## @deftypefnx {Function File} {text =} type ("@var{name}", @dots{})
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23 ## Display the contents of @var{name} which may be a file, function (m-file),
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24 ## variable, operator, or keyword.
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25 ##
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26 ## @code{type} normally prepends a header line describing the category of
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27 ## @var{name} such as function or variable; The @option{-q} option suppresses
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28 ## this behavior.
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29 ##
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30 ## If no output variable is used the contents are displayed on screen.
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31 ## Otherwise, a cell array of strings is returned, where each element
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32 ## corresponds to the contents of each requested function.
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33 ## @end deftypefn
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34
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35 function text = type (varargin)
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36
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37 if (nargin == 0)
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38 print_usage ();
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39 elseif (! iscellstr (varargin))
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40 error ("type: input arguments must be strings");
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41 endif
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42
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43 quiet = false;
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44 idx = strcmpi (varargin, "-q") | strcmpi (varargin, "-quiet");
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45 if (any (idx))
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46 quiet = true;
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47 varargin(idx) = [];
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48 endif
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49
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50 if (nargout > 0)
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51 text = cell (size (varargin));
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52 endif
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53
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54 for n = 1:length (varargin)
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55 name = varargin{n};
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56
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57 ## Find function and get its code
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58 txt = "";
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59 cmd = sprintf ("exist ('%s')", name);
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60 e = evalin ("caller", cmd);
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61 if (e == 1)
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62 ## Variable
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63 cmd = sprintf ("disp (%s);", name);
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64 desc = evalin ("caller", cmd);
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65 if (quiet)
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66 txt = desc;
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67 else
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68 txt = sprintf ("%s is a variable\n%s", name, desc);
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69 endif
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70 elseif (e == 2)
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71 ## m-file or ordinary file
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72 file = which (name);
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73 if (length (file) > 2)
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74 ext = file(end-1:end);
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75 endif
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76 if (isempty (file) || ! strcmpi (ext, ".m"))
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77 ## 'name' is an ordinary file, and not a function name.
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78 file = file_in_loadpath (name);
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79 quiet = true;
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80 endif
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81
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82 ## Read the file
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83 fid = fopen (file, "r");
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84 if (fid < 0)
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85 error ("type: couldn't open '%s' for reading", file);
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86 endif
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87 contents = char (fread (fid).');
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88 fclose (fid);
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89
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90 if (quiet)
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91 txt = contents;
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92 else
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93 txt = sprintf ("%s is the user-defined function defined from: %s\n\n%s",
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94 name, file, contents);
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95 endif
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96 elseif (e == 3)
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97 txt = sprintf ("%s is a dynamically-linked function", name);
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98 elseif (e == 5)
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99 txt = sprintf ("%s is a built-in function", name);
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100 elseif (e == 103)
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101 contents = __get_cmdline_fcn_txt__ (name);
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102 if (isempty (contents))
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103 txt = sprintf ("%s is a command-line function with no definition",
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104 name);
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105 else
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106 if (quiet)
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107 txt = contents;
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108 else
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109 txt = sprintf ("%s is the command-line function:\n\n%s",
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110 name, contents);
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111 endif
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112 endif
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113 elseif (any (strcmp (__operators__ (), name)))
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114 txt = sprintf ("%s is an operator", name);
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115 elseif (any (strcmp (__keywords__ (), name)))
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116 txt = sprintf ("%s is a keyword", name);
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117 else
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118 error ("type: '%s' undefined\n", name);
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119 endif
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120
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121 if (nargout == 0)
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122 disp (txt);
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123 else
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124 text{n} = txt;
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125 endif
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126 endfor
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127 endfunction
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128
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129
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130 %!test
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131 %! var = 1;
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132 %! text = type ("var");
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133 %! typestr = text{1}(1:17);
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134 %! assert (typestr, "var is a variable");
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135
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136 %!test
a1fa416c7c4a type.m: Fix function for filenames without extension (bug #39922).
Rik <rik@octave.org>
parents: 17338
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137 %! text = type ("ls");
a1fa416c7c4a type.m: Fix function for filenames without extension (bug #39922).
Rik <rik@octave.org>
parents: 17338
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138 %! typestr = text{1}(1:31);
a1fa416c7c4a type.m: Fix function for filenames without extension (bug #39922).
Rik <rik@octave.org>
parents: 17338
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139 %! assert (typestr, "ls is the user-defined function");
a1fa416c7c4a type.m: Fix function for filenames without extension (bug #39922).
Rik <rik@octave.org>
parents: 17338
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140
a1fa416c7c4a type.m: Fix function for filenames without extension (bug #39922).
Rik <rik@octave.org>
parents: 17338
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141 %!test
a1fa416c7c4a type.m: Fix function for filenames without extension (bug #39922).
Rik <rik@octave.org>
parents: 17338
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142 %! text = type ("ls", "-q");
a1fa416c7c4a type.m: Fix function for filenames without extension (bug #39922).
Rik <rik@octave.org>
parents: 17338
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143 %! typestr = text{1}(1:21);
a1fa416c7c4a type.m: Fix function for filenames without extension (bug #39922).
Rik <rik@octave.org>
parents: 17338
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144 %! assert (typestr, "## Copyright (C) 2006");
a1fa416c7c4a type.m: Fix function for filenames without extension (bug #39922).
Rik <rik@octave.org>
parents: 17338
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145
15039
e753177cde93 maint: Move non-dynamically linked functions from DLD-FUNCTIONS/ to corefcn/ directory
Rik <rik@octave.org>
parents: 14363
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146 %!assert (type ("amd"){1}, "amd is a dynamically-linked function")
14363
f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks
Rik <octave@nomad.inbox5.com>
parents: 14138
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147 %!assert (type ("cat"){1}, "cat is a built-in function")
f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks
Rik <octave@nomad.inbox5.com>
parents: 14138
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148 %!assert (type ("+"){1}, "+ is an operator")
f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks
Rik <octave@nomad.inbox5.com>
parents: 14138
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149 %!assert (type ("end"){1}, "end is a keyword")
17399
a1fa416c7c4a type.m: Fix function for filenames without extension (bug #39922).
Rik <rik@octave.org>
parents: 17338
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150
a1fa416c7c4a type.m: Fix function for filenames without extension (bug #39922).
Rik <rik@octave.org>
parents: 17338
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151 %!error type ()
a1fa416c7c4a type.m: Fix function for filenames without extension (bug #39922).
Rik <rik@octave.org>
parents: 17338
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152 %!error <'__NO_NAME__' undefined> type ('__NO_NAME__')
19790
446c46af4b42 strip trailing whitespace from most source files
John W. Eaton <jwe@octave.org>
parents: 17744
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153