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########################################################################
##
## Copyright (C) 2013-2024 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/>.
##
########################################################################
## news() and citation() are very much alike. They both do the same thing,
## just for different files. This function does all the work.
function display_info_file (fcn, package, file)
if (! ischar (package))
error ("%s: PACKAGE must be a string", fcn);
endif
if (strcmpi (package, "octave"))
octetcdir = __octave_config_info__ ("octetcdir");
filepath = fullfile (octetcdir, file);
else
installed = pkg ("list");
names = cellfun (@(x) x.name, installed, "UniformOutput", false);
pos = strcmpi (names, package);
if (! any (pos))
error ("%s: package '%s' is not installed", fcn, package);
endif
filepath = fullfile (installed{pos}.dir, "packinfo", file);
endif
if (! exist (filepath, "file"))
if (strcmpi (package, "octave"))
error ("%s: broken installation -- unable to locate %s file", fcn, file);
else
error ("%s: unable to locate %s file for package %s", fcn, file, package);
endif
endif
fid = fopen (filepath, "r");
while (ischar (line = fgets (fid)))
puts (line);
endwhile
fclose (fid);
endfunction
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