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-- Prosody IM
-- Copyright (C) 2008-2009 Matthew Wild
-- Copyright (C) 2008-2009 Waqas Hussain
--
-- This project is MIT/X11 licensed. Please see the
-- COPYING file in the source package for more information.
--
local match = string.match;
local nodeprep = require "util.encodings".stringprep.nodeprep;
local nameprep = require "util.encodings".stringprep.nameprep;
local resourceprep = require "util.encodings".stringprep.resourceprep;
module "jid"
local function _split(jid)
if not jid then return; end
local node, nodepos = match(jid, "^([^@]+)@()");
local host, hostpos = match(jid, "^([^@/]+)()", nodepos)
if node and not host then return nil, nil, nil; end
local resource = match(jid, "^/(.+)$", hostpos);
if (not host) or ((not resource) and #jid >= hostpos) then return nil, nil, nil; end
return node, host, resource;
end
split = _split;
function bare(jid)
local node, host = _split(jid);
if node and host then
return node.."@"..host;
end
return host;
end
local function _prepped_split(jid)
local node, host, resource = _split(jid);
if host then
host = nameprep(host);
if not host then return; end
if node then
node = nodeprep(node);
if not node then return; end
end
if resource then
resource = resourceprep(resource);
if not resource then return; end
end
return node, host, resource;
end
end
prepped_split = _prepped_split;
function prep(jid)
local node, host, resource = _prepped_split(jid);
if host then
if node then
host = node .. "@" .. host;
end
if resource then
host = host .. "/" .. resource;
end
end
return host;
end
function join(node, host, resource)
if node and host and resource then
return node.."@"..host.."/"..resource;
elseif node and host then
return node.."@"..host;
elseif host and resource then
return host.."/"..resource;
elseif host then
return host;
end
return nil; -- Invalid JID
end
return _M;
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