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annotate scripts/help/__makeinfo__.m @ 15063:36cbcc37fdb8

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Refactor configure.ac to make it more understandable. Use common syntax for messages in config.h Correct typos, refer to libraries in all caps, use two spaces after period. Follow Autoconf guidelines and place general tests before specific tests. * configure.ac, m4/acinclude.m4: Use common syntax for messages in config.h Correct typos, refer to libraries in all caps, use two spaces after period. Follow Autoconf guidelines and place general tests before specific tests.
author Rik <rik@octave.org>
date Tue, 31 Jul 2012 10:28:51 -0700
parents 4e9dc46d4125
children edce7d75597b
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1 ## Copyright (C) 2009-2012 S�ren 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 {Function File} {[@var{retval}, @var{status}] =} __makeinfo__ (@var{text}, @var{output_type})
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21 ## @deftypefnx {Function File} {[@var{retval}, @var{status}] =} __makeinfo__ (@var{text}, @var{output_type}, @var{see_also})
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22 ## Undocumented internal function.
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23 ## @end deftypefn
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24
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25 ## Run @code{makeinfo} on a given text.
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26 ##
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27 ## The string @var{text} is run through the @code{__makeinfo__} program
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28 ## to generate output in various formats. This string must contain valid
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29 ## Texinfo formatted text.
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30 ##
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31 ## The @var{output_type} selects the format of the output. This can be either
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32 ## @t{"html"}, @t{"texinfo"}, or @t{"plain text"}. By default this is
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33 ## @t{"plain text"}. If @var{output_type} is @t{"texinfo"}, the @t{@@seealso}
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34 ## macro is expanded, but otherwise the text is unaltered.
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35 ##
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36 ## If the optional argument @var{see_also} is present, it is used to expand the
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37 ## Octave specific @t{@@seealso} macro. This argument must be a function handle,
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38 ## that accepts a cell array of strings as input argument (each elements of the
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39 ## array corresponds to the arguments to the @t{@@seealso} macro), and return
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40 ## the expanded string. If this argument is not given, the @t{@@seealso} macro
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41 ## will be expanded to the text
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42 ##
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43 ## @example
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44 ## See also: arg1, arg2, ...
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45 ## @end example
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46 ##
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47 ## @noindent
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48 ## for @t{"plain text"} output, and
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49 ##
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50 ## @example
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51 ## See also: @@ref@{arg1@}, @@ref@{arg2@}, ...
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52 ## @end example
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53 ##
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54 ## @noindent
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55 ## otherwise.
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56 ##
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57 ## The optional output argument @var{status} contains the exit status of the
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58 ## @code{makeinfo} program as returned by @code{system}.
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59
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60 function [retval, status] = __makeinfo__ (text, output_type = "plain text", fsee_also)
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61
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62 ## Check input
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63 if (nargin < 1 || nargin > 3)
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64 print_usage ();
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65 endif
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66
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67 if (! ischar (text))
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68 error ("__makeinfo__: first input argument must be a string");
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69 endif
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70
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71 if (! ischar (output_type))
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72 error ("__makeinfo__: second input argument must be a string");
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73 endif
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74
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75 if (nargin < 3)
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76 if (strcmpi (output_type, "plain text"))
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77 fsee_also = @(T) strcat ...
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78 ("\nSee also:", sprintf (" %s,", T{:})(1:end-1), "\n");
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79 else
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80 fsee_also = @(T) strcat ...
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81 ("\nSee also:", sprintf (" @ref{%s},", T{:})(1:end-1), "\n");
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82 endif
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83 endif
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84
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85 if (! isa (fsee_also, "function_handle"))
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86 error ("__makeinfo__: third input argument must be a function handle");
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87 endif
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88
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89 ## Formatting in m-files has an extra space at the beginning of every line.
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90 ## Remove these unwanted spaces if present. First text char is "\n" delim.
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91 if (text(2) == " ")
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92 text = strrep (text, "\n ", "\n");
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93 endif
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94 ## Texinfo crashes if @end tex does not appear first on the line.
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95 text = regexprep (text, '^ +@end tex', '@end tex', 'lineanchors');
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96
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97 file = texi_macros_file ();
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98 fid = fopen (file, "r");
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99 if (fid < 0)
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100 error ("unable to open %s for reading", file);
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101 else
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102 macros_text = fread (fid, Inf, "*char")';
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103 text = cstrcat (macros_text, text);
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104 endif
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105 fclose (fid);
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106
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107 if (strcmpi (output_type, "texinfo"))
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108 status = 0;
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109 retval = text;
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110 return;
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111 endif
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112
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113 ## Create the final TeXinfo input string
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114 text = sprintf ("\\input texinfo\n\n%s\n\n@bye\n", text);
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115
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116 unwind_protect
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117 ## Write Texinfo to tmp file
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118 template = "octave-help-XXXXXX";
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119 [fid, name] = mkstemp (fullfile (P_tmpdir, template), true);
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120 if (fid < 0)
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121 error ("__makeinfo__: could not create temporary file");
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122 endif
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123 fwrite (fid, text);
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124 fclose (fid);
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125
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126 ## Take action depending on output type
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127 switch (lower (output_type))
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128 case "plain text"
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129 cmd = sprintf ("%s --no-headers --no-warn --force --no-validate %s",
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130 makeinfo_program (), name);
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131 case "html"
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132 cmd = sprintf ("%s --no-headers --html --no-warn --no-validate --force %s",
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133 makeinfo_program (), name);
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134 otherwise
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135 error ("__makeinfo__: unsupported output type: '%s'", output_type);
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136 endswitch
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137
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138 ## Call makeinfo
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139 [status, retval] = system (cmd);
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140
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141 unwind_protect_cleanup
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142 if (exist (name, "file"))
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143 delete (name);
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144 endif
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145 end_unwind_protect
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146 endfunction
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147
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148
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149 ## No test needed for internal helper function.
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150 %!assert (1)
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151