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########################################################################
##
## Copyright (C) 2010-2024 The Octave Project Developers
##
## See the file COPYRIGHT.md in the top-level directory of this
## distribution or <https://octave.org/copyright/>.
##
## This file is part of Octave.
##
## Octave is free software: you can redistribute it and/or modify it
## under the terms of the GNU General Public License as published by
## the Free Software Foundation, either version 3 of the License, or
## (at your option) any later version.
##
## Octave is distributed in the hope that it will be useful, but
## WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU General Public License for more details.
##
## You should have received a copy of the GNU General Public License
## along with Octave; see the file COPYING. If not, see
## <https://www.gnu.org/licenses/>.
##
########################################################################
## -*- texinfo -*-
## @deftypefn {} {} html_compare (@var{toolkits})
## @deftypefnx {} {} html_compare (@var{toolkits}, @var{name}, @var{value}, @dots{})
##
## Produce an html document to compare the plot demos produced by
## @var{toolkits}.
##
## Valid property names, and their defaults, are:
##
## @table @samp
## @item fmt
## @code{"png"}
##
## @item output
## @code{"compare_plot_demos.html"}
##
## @item template
## @code{"html_plot_demos_template.html"}
##
## @item column_width
## @code{600}
## @end table
##
## The template parameter refers to a specially formatted html file
## which accompanies this m-file script.
##
## Additional toolkit description can be added to the column header
## with a parameter named equal to the toolkit. For example:
##
## @smallexample
## @code{html_compare_plot_demos (@{"gnuplot", "fltk"@}, "gnuplot", " 4.6 patchlevel 5")}
## @end smallexample
##
## @seealso{compare_plot_demos, dump_demos, demo}
## @end deftypefn
function html_compare_plot_demos (toolkits, varargin)
## Set defaults
in.fmt = "png";
in.figfiles = {};
in.output_fmt = @(p) sprintf ("compare_plot_demos_%02i.html", p);
in.template = "html_plot_demos_template.html";
in.column_width = 600;
in.plots_per_page = 50;
## Parse inputs
for n = 1:2:numel (varargin)
in.(lower(varargin{n})) = varargin{n+1};
endfor
## Compile a list of all files for all toolkits
for t = 1:numel (toolkits)
filter = sprintf ("%s/*.%s", toolkits{t}, in.fmt);
in.figfiles = union (in.figfiles, {dir(filter).name});
endfor
fid = fopen (which (in.template), "r");
template = char (fread (fid)) .';
fclose (fid);
anchor = "<!-- ##ADD TABLE HERE## -->";
n = strfind (template, anchor);
header = strtrim (template(1:n-1));
trailer = strtrim (template(n+numel (anchor):end));
page = 1;
do
start_fig = (page - 1) * in.plots_per_page + 1;
stop_fig = page * in.plots_per_page;
last_page = stop_fig >= numel (in.figfiles);
if (last_page)
stop_fig = numel (in.figfiles);
endif
fid = fopen (in.output_fmt (page), "w");
unwind_protect
fprintf (fid, "%s\n", header);
fprintf (fid, "<h2>Generated on %s by %s with GNU Octave %s</h2>\n", ...
datestr (now (), 0), mfilename, version);
## Create page previous/next
if (page > 1)
prev_page_link = sprintf (['<p><a href="%s">%s</a></p>' "\n"], ...
in.output_fmt (page - 1), "previous page");
else
prev_page_link = "";
endif
if (! last_page)
next_page_link = sprintf (['<p><a href="%s">%s</a></p>' "\n"], ...
in.output_fmt (page + 1), "next page");
else
next_page_link = "";
endif
fprintf (fid, "%s%s", prev_page_link, next_page_link);
## Create table header
fprintf (fid, "<table>\n<tr>\n");
for t = 1:numel (toolkits)
## set default
column_header = upper (toolkits{t});
if (isfield (in, toolkits{t}))
column_header = [column_header, in.(toolkits{t})];
endif
fprintf (fid, ['<th>%s <a href="%s/diary.log">diary</a></th>' "\n"],
column_header, toolkits{t});
endfor
fprintf (fid, "</tr>\n");
for m = start_fig:stop_fig
[~, file] = fileparts (in.figfiles{m});
fn = [file "." in.fmt];
fprintf (fid, ['<tr id="%s">' "\n"], file);
for k = toolkits
ffn = fullfile (k{:}, fn);
fprintf (fid, "<td><span>%s</span><br>", ffn);
if (exist (ffn, "file"))
fprintf (fid, ...
'<img alt="%s" src="%s" style="width:%dpx">', ...
file, ffn, in.column_width);
else
err_fn = strrep (ffn, ".png", ".err");
if (! exist (err_fn, "file"))
warning ("File %s doesn't exist...", err_fn);
else
err_fid = fopen (err_fn);
msg = char (fread (err_fid))';
fclose (err_fid);
fprintf (fid, "<span>%s</span>", strrep (msg, "\n", "<br>"));
endif
endif
fprintf (fid, "</td>\n");
endfor
fprintf (fid, "</tr>\n");
endfor
fprintf (fid, "</table>\n");
fprintf (fid, "%s%s", prev_page_link, next_page_link);
fprintf (fid, "%s\n", trailer);
page++;
unwind_protect_cleanup
fclose (fid);
end_unwind_protect
until (stop_fig == numel (in.figfiles))
endfunction
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