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function count = hprintf (varargin)
%HPRINTF fprintf with hypertext links not highlighted in the command window.
% hprintf does this by replacing the string "href=" with "HREF=". If the file
% descriptor is not present, the output defaults to the command window, just
% like fprintf. Note that all browsers accept either href= or HREF=, so your
% hypertext links will not be affected except within the MATLAB Command Window.
% General usage is identical to fprintf:
%
% hprintf (format, arg1, arg2, ...)
% hprintf (fid, format, arg1, arg2, ...)
% count = hprintf ( ... same as above ... )
%
% Example:
% fprintf ('<a href="http://www.mathworks.com">MathWorks</a>\n') ;
% fprintf ('<a href="http://hitchhikers.movies.go.com">%d</a>\n', 42) ;
% hprintf ('<a href="http://www.mathworks.com">MathWorks</a>\n') ;
% hprintf ('<a href="http://hitchhikers.movies.go.com">%d</a>\n', 42) ;
%
% For a discussion, see Kristin's blog and the comments there at
% http://blogs.mathworks.com/desktop/2007/07/09
% (<a href="http://blogs.mathworks.com/desktop/2007/07/09">Kristin's blog</a>).
%
% NOTE: the examples above are modified by "help hprintf" so that you cannot
% see the HREF= text. To see the examples properly (without hypertext
% highlighting) use:
%
% edit hprintf
%
% To try the examples above, use hprintf with no inputs (note that this usage
% of hprintf also flags an error, to exactly mimic the fprintf behavior):
%
% hprintf
%
% Here is a slightly more complex example that has the advantage of being
% printed properly by "help hprintf":
%
% % a string template with hypertext contents:
% str = '<a AREF="http://www.mathworks.com">MathWorks</a>\n' ;
% % made into an active hypertext, which will be underlined when
% % displayed in the command window:
% hstr = strrep (str, 'AREF', 'href') ;
% fprintf (hstr) ;
% % displays: '<a href="http://www.mathworks.com">MathWorks</a>'
% hprintf (hstr) ;
% % displays: '<a HREF="http://www.mathworks.com">MathWorks</a>'
%
% See also fprintf, strrep, sprintf.
% Copyright 2007, T. Davis, with thanks to 'us' (us at neurol dot unizh dot ch)
% for suggestions.
% Aug 25, 2007
if (nargin < 1)
% try hprintf
help hprintf
fprintf ('\nhypertext highlighting with fprintf:\n\n') ;
fprintf ('<a href="http://www.mathworks.com">MathWorks</a>\n') ;
fprintf ('<a href="http://hitchhikers.movies.go.com">%d</a>\n', 42) ;
fprintf ('\nhypertext highlighting turned off with hprintf:\n\n') ;
hprintf ('<a href="http://www.mathworks.com">MathWorks</a>\n') ;
hprintf ('<a href="http://hitchhikers.movies.go.com">%d</a>\n\n', 42) ;
% flag an error, to mimic fprintf behavior
error ('Not enough input arguments') ;
elseif (nargout > 1)
% mimic fprintf
error ('Too many output arguments') ;
else
if (ischar (varargin {1}))
% mimic fprintf ('hello world %d\n', 42), with no file ID
cnt = fprintf (strrep (sprintf (varargin {:}), 'href=', 'HREF=')) ;
else
% mimic fprintf (fid, 'hello world %d\n', 42), with file ID given
cnt = fprintf (varargin {1}, ...
strrep (sprintf (varargin {2:end}), 'href=', 'HREF=')) ;
end
if (nargout > 0)
% return the fprintf output
count = cnt ;
end
end
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