--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/util/stanza.lua~ Wed Sep 17 22:20:08 2008 +0300
@@ -0,0 +1,138 @@
+local t_insert = table.insert;
+local t_remove = table.remove;
+local s_format = string.format;
+local tostring = tostring;
+local setmetatable = setmetatable;
+local pairs = pairs;
+local ipairs = ipairs;
+local type = type;
+local s_gsub = string.gsub;
+module "stanza"
+
+stanza_mt = {};
+stanza_mt.__index = stanza_mt;
+
+function stanza(name, attr)
+ local stanza = { name = name, attr = attr or {}, tags = {}, last_add = {}};
+ return setmetatable(stanza, stanza_mt);
+end
+
+function stanza_mt:iq(attrs)
+ return self + stanza("iq", attrs)
+end
+function stanza_mt:message(attrs)
+ return self + stanza("message", attrs)
+end
+function stanza_mt:presence(attrs)
+ return self + stanza("presence", attrs)
+end
+function stanza_mt:query(xmlns)
+ return self:tag("query", { xmlns = xmlns });
+end
+function stanza_mt:tag(name, attrs)
+ local s = stanza(name, attrs);
+ (self.last_add[#self.last_add] or self):add_child(s);
+ t_insert(self.last_add, s);
+ return self;
+end
+
+function stanza_mt:text(text)
+ (self.last_add[#self.last_add] or self):add_child(text);
+ return self;
+end
+
+function stanza_mt:up()
+ t_remove(self.last_add);
+ return self;
+end
+
+function stanza_mt:add_child(child)
+ if type(child) == "table" then
+ t_insert(self.tags, child);
+ end
+ t_insert(self, child);
+end
+
+function stanza_mt:child_with_name(name)
+ for _, child in ipairs(self) do
+ if child.name == name then return child; end
+ end
+end
+
+function stanza_mt:children()
+ local i = 0;
+ return function (a)
+ i = i + 1
+ local v = a[i]
+ if v then return v; end
+ 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;
+
+end
+
+do
+ local xml_entities = { ["'"] = "'", ["\""] = """, ["<"] = "<", [">"] = ">", ["&"] = "&" };
+ function xml_escape(s) return s_gsub(s, "['&<>\"]", xml_entities); end
+end
+
+local xml_escape = xml_escape;
+
+function stanza_mt.__tostring(t)
+ local children_text = "";
+ for n, child in ipairs(t) do
+ if type(child) == "string" then
+ children_text = children_text .. xml_escape(child);
+ else
+ children_text = children_text .. tostring(child);
+ end
+ end
+
+ local attr_string = "";
+ if t.attr then
+ for k, v in pairs(t.attr) do if type(k) == "string" then attr_string = attr_string .. s_format(" %s='%s'", k, tostring(v)); end end
+ end
+
+ return s_format("<%s%s>%s</%s>", t.name, attr_string, children_text, t.name);
+end
+
+function stanza_mt.__add(s1, s2)
+ return s1:add_child(s2);
+end
+
+
+do
+ local id = 0;
+ function new_id()
+ id = id + 1;
+ return "lx"..id;
+ end
+end
+
+function message(attr, body)
+ if not body then
+ return stanza("message", attr);
+ else
+ return stanza("message", attr):tag("body"):text(body);
+ end
+end
+function iq(attr)
+ if attr and not attr.id then attr.id = new_id(); end
+ return stanza("iq", attr or { id = new_id() });
+end
+
+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 nil) });
+end
+
+function presence(attr)
+ return stanza("presence", attr);
+end
+