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########################################################################
##
## Copyright (C) 2017-2024 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 {} {@var{status} =} web ()
## @deftypefnx {} {@var{status} =} web (@var{url})
## @deftypefnx {} {@var{status} =} web (@var{url}, @var{option})
## @deftypefnx {} {@var{status} =} web (@var{url}, @var{option_1}, @dots{}, @var{option_N})
## @deftypefnx {} {[@var{status}, @var{h}, @var{url}] =} web (@dots{})
##
## Open @var{url} in the default system web browser.
##
## With no arguments given, the address @url{https://www.octave.org} is
## opened.
##
## Additional options can be passed for @sc{matlab} compatibility, but are
## ignored.
##
## @itemize @bullet
## @item
## @samp{-browser} Open @var{url} in the default system browser.
##
## @item
## @samp{-new} No effect on the system browser.
##
## @item
## @samp{-noaddressbox} No effect on the system browser.
##
## @item
## @samp{-notoolbar} No effect on the system browser.
##
## @end itemize
##
## The return value @var{status} has one of the values:
##
## @itemize @bullet
## @item
## @samp{0} Found and opened system browser successfully.
##
## @item
## @samp{1} Cannot find the system browser.
##
## @item
## @samp{2} System browser found, but an error occurred.
##
## @end itemize
##
## The return values @var{handle} and @var{url} are currently unimplemented
## but given for compatibility.
##
## @seealso{weboptions, webread, webwrite, urlread, urlwrite}
## @end deftypefn
function [status, h, url] = web (url, varargin)
if (nargin == 0)
url = "https://www.octave.org";
endif
if (! (ischar (url) && isrow (url)))
error ("web: URL must be a string");
endif
for i = 1:numel (varargin)
validatestring (varargin{i},
{"-browser", "-new", "-noaddressbox", "-notoolbar"});
endfor
## Store text after "text://" to a temporary file and open it.
if (strncmpi (url, "text://", 7))
fname = [tempname() ".html"];
fid = fopen (fname, "w");
if (fid < 0)
error ("web: could not open temporary file for text:// content");
endif
fprintf (fid, "%s", url(8:end));
fclose (fid);
url = ["file://" fname];
endif
sts = __open_with_system_app__ (url);
sts = ifelse (sts == 1, 0, 2);
h = []; # Empty handle, as we cannot control an external browser.
## For Matlab compatibility.
if (any (strcmp (varargin, "-browser")))
url = [];
endif
if (nargout > 0)
status = sts;
endif
endfunction
%!error <URL must be a string> web (1)
%!error <URL must be a string> web ('')
%!error <'-invalid_Option' does not match>
%! web ("https://www.octave.org", "-invalid_Option")
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