+-- 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"
-function split(jid)
- local node = match(jid, "^([^@]+)@");
- local server = (node and match(jid, ".-@([^@/]+)")) or match(jid, "^([^@/]+)");
- local resource = match(jid, "/(.+)$");
- return node, server, resource;
+local function _split(jid)
+ if not jid then return; end
+ local node, nodepos = match(jid, "^([^@]+)@()");
+ local host, hostpos = match(jid, "^([^@/]+)()", nodepos)
+ if node and not host then return nil, nil, nil; end
+ local resource = match(jid, "^/(.+)$", 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;