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-- Prosody IM v0.1
-- Copyright (C) 2008 Matthew Wild
-- Copyright (C) 2008 Waqas Hussain
--
-- This program 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 2
-- of the License, or (at your option) any later version.
--
-- This program 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 this program; if not, write to the Free Software
-- Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
--
local select = select;
local t_insert = table.insert;
local pairs = pairs;
local next = next;
module "multitable"
local function get(self, ...)
local t = self.data;
for n = 1,select('#', ...) do
t = t[select(n, ...)];
if not t then break; end
end
return t;
end
local function add(self, ...)
local t = self.data;
local count = select('#', ...);
for n = 1,count-1 do
local key = select(n, ...);
local tab = t[key];
if not tab then tab = {}; t[key] = tab; end
t = tab;
end
t_insert(t, (select(count, ...)));
end
local function r(t, n, _end, ...)
if t == nil then return; end
if n > _end then
for key in pairs(t) do
t[key] = nil;
end
end
local k = select(n, ...);
if k then
v = t[k];
if v then
r(v, n+1, _end, ...);
if not next(v) then
t[k] = nil;
end
end
else
for _,b in pairs(t) do
r(b, n+1, _end, ...);
if not next(b) then
t[_] = nil;
end
end
end
end
local function remove(self, ...)
local _end = select('#', ...);
for n = _end,1 do
if select(n, ...) then _end = n; break; end
end
r(self.data, 1, _end, ...);
end
function new()
return {
data = {};
get = get;
add = add;
remove = remove;
};
end
return _M;
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