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annotate scripts/help/type.m @ 20368:7503499a252b stable

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doc: Update docstrings to have one sentence summary as first line. Update scripts in audio, elfun, general, geometry, and image directories. * scripts/audio/@audioplayer/__get_properties__.m, scripts/audio/@audioplayer/audioplayer.m, scripts/audio/@audioplayer/get.m, scripts/audio/@audioplayer/isplaying.m, scripts/audio/@audioplayer/play.m, scripts/audio/@audioplayer/playblocking.m, scripts/audio/@audioplayer/set.m, scripts/audio/@audioplayer/subsasgn.m, scripts/audio/@audioplayer/subsref.m, scripts/audio/@audiorecorder/audiorecorder.m, scripts/audio/@audiorecorder/get.m, scripts/audio/@audiorecorder/getaudiodata.m, scripts/audio/@audiorecorder/getplayer.m, scripts/audio/@audiorecorder/isrecording.m, scripts/audio/@audiorecorder/play.m, scripts/audio/@audiorecorder/record.m, scripts/audio/@audiorecorder/recordblocking.m, scripts/audio/@audiorecorder/set.m, scripts/audio/@audiorecorder/stop.m, scripts/audio/@audiorecorder/subsasgn.m, scripts/audio/@audiorecorder/subsref.m, scripts/audio/lin2mu.m, scripts/audio/mu2lin.m, scripts/audio/record.m, scripts/audio/sound.m, scripts/audio/soundsc.m, scripts/audio/wavread.m, scripts/audio/wavwrite.m, scripts/elfun/cosd.m, scripts/elfun/sind.m, scripts/elfun/tand.m, scripts/general/accumarray.m, scripts/general/accumdim.m, scripts/general/bitcmp.m, scripts/general/bitget.m, scripts/general/bitset.m, scripts/general/blkdiag.m, scripts/general/cart2pol.m, scripts/general/cart2sph.m, scripts/general/cell2mat.m, scripts/general/celldisp.m, scripts/general/chop.m, scripts/general/circshift.m, scripts/general/common_size.m, scripts/general/cplxpair.m, scripts/general/cumtrapz.m, scripts/general/dblquad.m, scripts/general/deal.m, scripts/general/del2.m, scripts/general/display.m, scripts/general/divergence.m, scripts/general/fieldnames.m, scripts/general/flip.m, scripts/general/flipdim.m, scripts/general/fliplr.m, scripts/general/flipud.m, scripts/general/gradient.m, scripts/general/interp3.m, scripts/general/interpft.m, scripts/general/interpn.m, scripts/general/loadobj.m, scripts/general/logspace.m, scripts/general/methods.m, scripts/general/nargchk.m, scripts/general/narginchk.m, scripts/general/nargoutchk.m, scripts/general/nextpow2.m, scripts/general/nthargout.m, scripts/general/num2str.m, scripts/general/pol2cart.m, scripts/general/polyarea.m, scripts/general/postpad.m, scripts/general/prepad.m, scripts/general/profile.m, scripts/general/quadgk.m, scripts/general/quadl.m, scripts/general/quadv.m, scripts/general/randi.m, scripts/general/rat.m, scripts/general/repmat.m, scripts/general/rot90.m, scripts/general/rotdim.m, scripts/general/saveobj.m, scripts/general/shift.m, scripts/general/shiftdim.m, scripts/general/sortrows.m, scripts/general/sph2cart.m, scripts/general/structfun.m, scripts/general/subsindex.m, scripts/general/trapz.m, scripts/general/triplequad.m, scripts/geometry/delaunayn.m, scripts/geometry/dsearch.m, scripts/geometry/dsearchn.m, scripts/geometry/griddata.m, scripts/geometry/griddata3.m, scripts/geometry/griddatan.m, scripts/geometry/inpolygon.m, scripts/geometry/rectint.m, scripts/geometry/tsearchn.m, scripts/geometry/voronoi.m, scripts/geometry/voronoin.m, scripts/help/__unimplemented__.m, scripts/help/doc.m, scripts/help/doc_cache_create.m, scripts/help/get_first_help_sentence.m, scripts/help/help.m, scripts/help/lookfor.m, scripts/help/print_usage.m, scripts/help/type.m, scripts/help/which.m, scripts/image/autumn.m, scripts/image/bone.m, scripts/image/brighten.m, scripts/image/cmpermute.m, scripts/image/colorcube.m, scripts/image/contrast.m, scripts/image/cool.m, scripts/image/copper.m, scripts/image/cubehelix.m, scripts/image/flag.m, scripts/image/gmap40.m, scripts/image/gray.m, scripts/image/gray2ind.m, scripts/image/hot.m, scripts/image/hsv.m, scripts/image/image.m, scripts/image/imagesc.m, scripts/image/imfinfo.m, scripts/image/imformats.m, scripts/image/imread.m, scripts/image/imshow.m, scripts/image/imwrite.m, scripts/image/iscolormap.m, scripts/image/jet.m, scripts/image/lines.m, scripts/image/ntsc2rgb.m, scripts/image/ocean.m, scripts/image/pink.m, scripts/image/prism.m, scripts/image/rainbow.m, scripts/image/rgb2ntsc.m, scripts/image/spinmap.m, scripts/image/spring.m, scripts/image/summer.m, scripts/image/white.m, scripts/image/winter.m: Update docstrings to have one sentence summary as first line. Re-structure to have line lengths <= 80 chars.
author Rik <rik@octave.org>
date Sun, 03 May 2015 09:36:20 -0700
parents 4197fc428c7d
children abf85f8cbd6c
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 (any (strcmp (__operators__ (), name)))
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101 txt = sprintf ("%s is an operator", name);
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102 elseif (any (strcmp (__keywords__ (), name)))
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103 txt = sprintf ("%s is a keyword", name);
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104 else
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105 error ("type: '%s' undefined\n", name);
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106 endif
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107
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108 if (nargout == 0)
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109 disp (txt);
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110 else
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111 text{n} = txt;
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112 endif
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113 endfor
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114 endfunction
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115
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116
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117 %!test
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118 %! var = 1;
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119 %! text = type ("var");
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120 %! typestr = text{1}(1:17);
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121 %! assert (typestr, "var is a variable");
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122
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123 %!test
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124 %! text = type ("ls");
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125 %! typestr = text{1}(1:31);
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126 %! assert (typestr, "ls is the user-defined function");
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127
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128 %!test
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129 %! text = type ("ls", "-q");
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130 %! typestr = text{1}(1:21);
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131 %! assert (typestr, "## Copyright (C) 2006");
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132
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133 %!assert (type ("amd"){1}, "amd is a dynamically-linked function")
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134 %!assert (type ("cat"){1}, "cat is a built-in function")
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135 %!assert (type ("+"){1}, "+ is an operator")
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136 %!assert (type ("end"){1}, "end is a keyword")
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137
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138 %!error type ()
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139 %!error <'__NO_NAME__' undefined> type ('__NO_NAME__')
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140