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## Copyright (C) 2005-2018 Søren Hauberg
## Copyright (C) 2010 VZLU Prague, a.s.
##
## 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{out1}, @var{out2}] =} installed_packages (@var{local_list}, @var{global_list}, @var{pkgname})
## Undocumented internal function.
## @end deftypefn
function [out1, out2] = installed_packages (local_list, global_list, pkgname = {})
## Get the list of installed packages.
try
local_packages = load (local_list).local_packages;
catch
local_packages = {};
end_try_catch
try
global_packages = load (global_list).global_packages;
catch
global_packages = {};
end_try_catch
installed_pkgs_lst = {local_packages{:}, global_packages{:}};
## Eliminate duplicates in the installed package list.
## Locally installed packages take precedence.
installed_names = cellfun (@(x) x.name, installed_pkgs_lst,
"uniformoutput", false);
[~, idx] = unique (installed_names, "first");
installed_names = installed_names(idx);
installed_pkgs_lst = installed_pkgs_lst(idx);
## Check whether info on a particular package was requested
if (! isempty (pkgname))
idx = find (strcmp (pkgname{1}, installed_names));
if (isempty (idx))
installed_names = {};
installed_pkgs_lst = {};
else
installed_names = installed_names(idx);
installed_pkgs_lst = installed_pkgs_lst(idx);
endif
endif
## Now check if the package is loaded.
## FIXME: Couldn't dir_in_loadpath() be used here?
tmppath = strrep (path (), '\', '/');
for i = 1:numel (installed_pkgs_lst)
if (strfind (tmppath, strrep (installed_pkgs_lst{i}.dir, '\', '/')))
installed_pkgs_lst{i}.loaded = true;
else
installed_pkgs_lst{i}.loaded = false;
endif
endfor
for i = 1:numel (local_packages)
if (strfind (tmppath, strrep (local_packages{i}.dir, '\', '/')))
local_packages{i}.loaded = true;
else
local_packages{i}.loaded = false;
endif
endfor
for i = 1:numel (global_packages)
if (strfind (tmppath, strrep (global_packages{i}.dir, '\', '/')))
global_packages{i}.loaded = true;
else
global_packages{i}.loaded = false;
endif
endfor
## Should we return something?
if (nargout == 1)
out1 = installed_pkgs_lst;
elseif (nargout > 1)
out1 = local_packages;
out2 = global_packages;
else
## Don't return anything, instead we'll print something.
num_packages = numel (installed_pkgs_lst);
if (num_packages == 0)
if (isempty (pkgname))
printf ("no packages installed.\n");
else
printf ("package %s is not installed.\n", pkgname{1});
endif
return;
endif
## Compute the maximal lengths of name, version, and dir.
h1 = "Package Name";
h2 = "Version";
h3 = "Installation directory";
max_name_length = max ([length(h1), cellfun(@length, installed_names)]);
version_lengths = cellfun (@(x) length (x.version), installed_pkgs_lst);
max_version_length = max ([length(h2), version_lengths]);
ncols = terminal_size ()(2);
max_dir_length = ncols - max_name_length - max_version_length - 7;
if (max_dir_length < 20)
max_dir_length = Inf;
endif
h1 = postpad (h1, max_name_length + 1, " ");
h2 = postpad (h2, max_version_length, " ");;
## Print a header.
header = sprintf ("%s | %s | %s\n", h1, h2, h3);
printf (header);
tmp = sprintf (repmat ("-", 1, length (header) - 1));
tmp(length(h1)+2) = "+";
tmp(length(h1)+length(h2)+5) = "+";
printf ("%s\n", tmp);
## Print the packages.
format = sprintf ("%%%ds %%1s| %%%ds | %%s\n",
max_name_length, max_version_length);
for i = 1:num_packages
cur_name = installed_pkgs_lst{i}.name;
cur_version = installed_pkgs_lst{i}.version;
cur_dir = installed_pkgs_lst{i}.dir;
if (length (cur_dir) > max_dir_length)
first_char = length (cur_dir) - max_dir_length + 4;
first_filesep = strfind (cur_dir(first_char:end), filesep ());
if (! isempty (first_filesep))
cur_dir = ["..." cur_dir((first_char + first_filesep(1) - 1):end)];
else
cur_dir = ["..." cur_dir(first_char:end)];
endif
endif
if (installed_pkgs_lst{i}.loaded)
cur_loaded = "*";
else
cur_loaded = " ";
endif
printf (format, cur_name, cur_loaded, cur_version, cur_dir);
endfor
endif
endfunction
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