X-Git-Url: https://git.enpas.org/?a=blobdiff_plain;f=util%2Fstanza.lua;h=de83977f38fb41d717975b18fbcb3ee29caf01ac;hb=e0ff05b0a50b767960b60561018da50d5416211e;hp=5bc15609fe5069b683e65ff004c3c203196adeb5;hpb=35e4320350f6e32f9f7e526853bd5c77a8442f3a;p=prosody.git

diff --git a/util/stanza.lua b/util/stanza.lua
index 5bc15609..de83977f 100644
--- a/util/stanza.lua
+++ b/util/stanza.lua
@@ -1,6 +1,6 @@
--- Prosody IM v0.3
--- Copyright (C) 2008-2009 Matthew Wild
--- Copyright (C) 2008-2009 Waqas Hussain
+-- Prosody IM
+-- Copyright (C) 2008-2010 Matthew Wild
+-- Copyright (C) 2008-2010 Waqas Hussain
 -- 
 -- This project is MIT/X11 licensed. Please see the
 -- COPYING file in the source package for more information.
@@ -23,22 +23,34 @@ local next          =          next;
 local print         =         print;
 local unpack        =        unpack;
 local s_gsub        =   string.gsub;
+local s_char        =   string.char;
+local s_find        =   string.find;
 local os            =            os;
 
 local do_pretty_printing = not os.getenv("WINDIR");
-local getstyle, getstring = require "util.termcolours".getstyle, require "util.termcolours".getstring;
+local getstyle, getstring;
+if do_pretty_printing then
+	local ok, termcolours = pcall(require, "util.termcolours");
+	if ok then
+		getstyle, getstring = termcolours.getstyle, termcolours.getstring;
+	else
+		do_pretty_printing = nil;
+	end
+end
 
-local log = require "util.logger".init("stanza");
+local xmlns_stanzas = "urn:ietf:params:xml:ns:xmpp-stanzas";
 
 module "stanza"
 
-stanza_mt = {};
+stanza_mt = { __type = "stanza" };
 stanza_mt.__index = stanza_mt;
+local stanza_mt = stanza_mt;
 
 function stanza(name, attr)
-	local stanza = { name = name, attr = attr or {}, tags = {}, last_add = {}};
+	local stanza = { name = name, attr = attr or {}, tags = {} };
 	return setmetatable(stanza, stanza_mt);
 end
+local stanza = stanza;
 
 function stanza_mt:query(xmlns)
 	return self:tag("query", { xmlns = xmlns });
@@ -50,18 +62,27 @@ end
 
 function stanza_mt:tag(name, attrs)
 	local s = stanza(name, attrs);
-	(self.last_add[#self.last_add] or self):add_direct_child(s);
-	t_insert(self.last_add, s);
+	local last_add = self.last_add;
+	if not last_add then last_add = {}; self.last_add = last_add; end
+	(last_add[#last_add] or self):add_direct_child(s);
+	t_insert(last_add, s);
 	return self;
 end
 
 function stanza_mt:text(text)
-	(self.last_add[#self.last_add] or self):add_direct_child(text);
-	return self; 
+	local last_add = self.last_add;
+	(last_add and last_add[#last_add] or self):add_direct_child(text);
+	return self;
 end
 
 function stanza_mt:up()
-	t_remove(self.last_add);
+	local last_add = self.last_add;
+	if last_add then t_remove(last_add); end
+	return self;
+end
+
+function stanza_mt:reset()
+	self.last_add = nil;
 	return self;
 end
 
@@ -73,18 +94,38 @@ function stanza_mt:add_direct_child(child)
 end
 
 function stanza_mt:add_child(child)
-	(self.last_add[#self.last_add] or self):add_direct_child(child);
+	local last_add = self.last_add;
+	(last_add and last_add[#last_add] or self):add_direct_child(child);
 	return self;
 end
 
+function stanza_mt:get_child(name, xmlns)
+	for _, child in ipairs(self.tags) do
+		if (not name or child.name == name)
+			and ((not xmlns and self.attr.xmlns == child.attr.xmlns)
+				or child.attr.xmlns == xmlns) then
+			
+			return child;
+		end
+	end
+end
+
+function stanza_mt:get_child_text(name, xmlns)
+	local tag = self:get_child(name, xmlns);
+	if tag then
+		return tag:get_text();
+	end
+	return nil;
+end
+
 function stanza_mt:child_with_name(name)
-	for _, child in ipairs(self.tags) do	
+	for _, child in ipairs(self.tags) do
 		if child.name == name then return child; end
 	end
 end
 
 function stanza_mt:child_with_ns(ns)
-	for _, child in ipairs(self.tags) do	
+	for _, child in ipairs(self.tags) do
 		if child.attr.xmlns == ns then return child; end
 	end
 end
@@ -93,69 +134,92 @@ function stanza_mt:children()
 	local i = 0;
 	return function (a)
 			i = i + 1
-			local v = a[i]
-			if v then return v; end
+			return a[i];
 		end, self, i;
-	                                    
 end
-function stanza_mt:childtags()
-	local i = 0;
-	return function (a)
-			i = i + 1
-			local v = self.tags[i]
-			if v then return v; end
-		end, self.tags[1], i;
-	                                    
+
+function stanza_mt:childtags(name, xmlns)
+	xmlns = xmlns or self.attr.xmlns;
+	local tags = self.tags;
+	local start_i, max_i = 1, #tags;
+	return function ()
+		for i = start_i, max_i do
+			local v = tags[i];
+			if (not name or v.name == name)
+			and (not xmlns or xmlns == v.attr.xmlns) then
+				start_i = i+1;
+				return v;
+			end
+		end
+	end;
 end
 
+function stanza_mt:maptags(callback)
+	local tags, curr_tag = self.tags, 1;
+	local n_children, n_tags = #self, #tags;
+	
+	local i = 1;
+	while curr_tag <= n_tags do
+		if self[i] == tags[curr_tag] then
+			local ret = callback(self[i]);
+			if ret == nil then
+				t_remove(self, i);
+				t_remove(tags, curr_tag);
+				n_children = n_children - 1;
+				n_tags = n_tags - 1;
+			else
+				self[i] = ret;
+				tags[i] = ret;
+			end
+			i = i + 1;
+			curr_tag = curr_tag + 1;
+		end
+	end
+	return self;
+end
+
+local xml_escape
 do
-	local xml_entities = { ["'"] = "&apos;", ["\""] = "&quot;", ["<"] = "&lt;", [">"] = "&gt;", ["&"] = "&amp;" };
-	function xml_escape(s) return s_gsub(s, "['&<>\"]", xml_entities); end
-end
-
-local xml_escape = xml_escape;
-
-local function dostring(t, buf, self, xml_escape)
-	local nsid, ns, attrk = 0;
-	t_insert(buf, "<");
-	t_insert(buf, t.name);
-	for k, v in pairs(t.attr) do if type(k) == "string" then
-		t_insert(buf, " ");
-		ns, attrk = s_match(k, "^([^|]+)|(.+)$");
-		if ns then
-			nsid = (nsid or -1) + 1;
-			t_insert(buf, "xmlns:ns"..nsid);
-			t_insert(buf, "='");
-			t_insert(buf, (xml_escape(tostring(ns))));
-			t_insert(buf, "' ");
-			t_insert(buf, "ns"..nsid..":"..attrk);
-		else
-			t_insert(buf, k);
+	local escape_table = { ["'"] = "&apos;", ["\""] = "&quot;", ["<"] = "&lt;", [">"] = "&gt;", ["&"] = "&amp;" };
+	function xml_escape(str) return (s_gsub(str, "['&<>\"]", escape_table)); end
+	_M.xml_escape = xml_escape;
+end
+
+local function _dostring(t, buf, self, xml_escape, parentns)
+	local nsid = 0;
+	local name = t.name
+	t_insert(buf, "<"..name);
+	for k, v in pairs(t.attr) do
+		if s_find(k, "\1", 1, true) then
+			local ns, attrk = s_match(k, "^([^\1]*)\1?(.*)$");
+			nsid = nsid + 1;
+			t_insert(buf, " xmlns:ns"..nsid.."='"..xml_escape(ns).."' ".."ns"..nsid..":"..attrk.."='"..xml_escape(v).."'");
+		elseif not(k == "xmlns" and v == parentns) then
+			t_insert(buf, " "..k.."='"..xml_escape(v).."'");
 		end
-		t_insert(buf, "='");
-		t_insert(buf, (xml_escape(tostring(v))));
-		t_insert(buf, "'");
-	end end
-	t_insert(buf, ">");
-	for n, child in ipairs(t) do
-		if child.name then 
-			self(child, buf, self, xml_escape);
-		else
-			t_insert(buf, (xml_escape(child)));
+	end
+	local len = #t;
+	if len == 0 then
+		t_insert(buf, "/>");
+	else
+		t_insert(buf, ">");
+		for n=1,len do
+			local child = t[n];
+			if child.name then
+				self(child, buf, self, xml_escape, t.attr.xmlns);
+			else
+				t_insert(buf, xml_escape(child));
+			end
 		end
+		t_insert(buf, "</"..name..">");
 	end
-	t_insert(buf, "</");
-	t_insert(buf, t.name);
-	t_insert(buf, ">");
 end
-
 function stanza_mt.__tostring(t)
 	local buf = {};
-	dostring(t, buf, dostring, xml_escape);
+	_dostring(t, buf, _dostring, xml_escape, nil);
 	return t_concat(buf);
 end
 
-
 function stanza_mt.top_tag(t)
 	local attr_string = "";
 	if t.attr then
@@ -164,17 +228,47 @@ function stanza_mt.top_tag(t)
 	return s_format("<%s%s>", t.name, attr_string);
 end
 
+function stanza_mt.get_text(t)
+	if #t.tags == 0 then
+		return t_concat(t);
+	end
+end
+
+function stanza_mt.get_error(stanza)
+	local type, condition, text;
+	
+	local error_tag = stanza:get_child("error");
+	if not error_tag then
+		return nil, nil, nil;
+	end
+	type = error_tag.attr.type;
+	
+	for child in error_tag:childtags() do
+		if child.attr.xmlns == xmlns_stanzas then
+			if not text and child.name == "text" then
+				text = child:get_text();
+			elseif not condition then
+				condition = child.name;
+			end
+			if condition and text then
+				break;
+			end
+		end
+	end
+	return type, condition or "undefined-condition", text;
+end
+
 function stanza_mt.__add(s1, s2)
 	return s1:add_direct_child(s2);
 end
 
 
 do
-        local id = 0;
-        function new_id()
-                id = id + 1;
-                return "lx"..id;
-        end
+	local id = 0;
+	function new_id()
+		id = id + 1;
+		return "lx"..id;
+	end
 end
 
 function preserialize(stanza)
@@ -192,6 +286,19 @@ end
 function deserialize(stanza)
 	-- Set metatable
 	if stanza then
+		local attr = stanza.attr;
+		for i=1,#attr do attr[i] = nil; end
+		local attrx = {};
+		for att in pairs(attr) do
+			if s_find(att, "|", 1, true) and not s_find(att, "\1", 1, true) then
+				local ns,na = s_match(att, "^([^|]+)|(.+)$");
+				attrx[ns.."\1"..na] = attr[att];
+				attr[att] = nil;
+			end
+		end
+		for a,v in pairs(attrx) do
+			attr[a] = v;
+		end
 		setmetatable(stanza, stanza_mt);
 		for _, child in ipairs(stanza) do
 			if type(child) == "table" then
@@ -207,38 +314,33 @@ function deserialize(stanza)
 				end
 			end
 			stanza.tags = tags;
-			if not stanza.last_add then
-				stanza.last_add = {};
-			end
 		end
 	end
 	
 	return stanza;
 end
 
-function clone(stanza)
-    local lookup_table = {};
-    local function _copy(object)
-        if type(object) ~= "table" then
-            return object;
-        elseif lookup_table[object] then
-            return lookup_table[object];
-        end
-        local new_table = {};
-        lookup_table[object] = new_table;
-        for index, value in pairs(object) do
-            new_table[_copy(index)] = _copy(value);
-        end
-        return setmetatable(new_table, getmetatable(object));
-    end
-    return _copy(stanza)
+local function _clone(stanza)
+	local attr, tags = {}, {};
+	for k,v in pairs(stanza.attr) do attr[k] = v; end
+	local new = { name = stanza.name, attr = attr, tags = tags };
+	for i=1,#stanza do
+		local child = stanza[i];
+		if child.name then
+			child = _clone(child);
+			t_insert(tags, child);
+		end
+		t_insert(new, child);
+	end
+	return setmetatable(new, stanza_mt);
 end
+clone = _clone;
 
 function message(attr, body)
 	if not body then
 		return stanza("message", attr);
 	else
-		return stanza("message", attr):tag("body"):text(body);
+		return stanza("message", attr):tag("body"):text(body):up();
 	end
 end
 function iq(attr)
@@ -250,14 +352,16 @@ function reply(orig)
 	return stanza(orig.name, orig.attr and { to = orig.attr.from, from = orig.attr.to, id = orig.attr.id, type = ((orig.name == "iq" and "result") or orig.attr.type) });
 end
 
-function error_reply(orig, type, condition, message, clone)
-	local t = reply(orig);
-	t.attr.type = "error";
-	-- TODO use clone
-	t:tag("error", {type = type})
-		:tag(condition, {xmlns = "urn:ietf:params:xml:ns:xmpp-stanzas"}):up();
-	if (message) then t:tag("text"):text(message):up(); end
-	return t; -- stanza ready for adding app-specific errors
+do
+	local xmpp_stanzas_attr = { xmlns = xmlns_stanzas };
+	function error_reply(orig, type, condition, message)
+		local t = reply(orig);
+		t.attr.type = "error";
+		t:tag("error", {type = type}) --COMPAT: Some day xmlns:stanzas goes here
+			:tag(condition, xmpp_stanzas_attr):up();
+		if (message) then t:tag("text", xmpp_stanzas_attr):text(message):up(); end
+		return t; -- stanza ready for adding app-specific errors
+	end
 end
 
 function presence(attr)
@@ -277,7 +381,7 @@ if do_pretty_printing then
 	function stanza_mt.pretty_print(t)
 		local children_text = "";
 		for n, child in ipairs(t) do
-			if type(child) == "string" then	
+			if type(child) == "string" then
 				children_text = children_text .. xml_escape(child);
 			else
 				children_text = children_text .. child:pretty_print();