Mercurial > lxmppd-hg-xmllex / file comparison
comparison: util/stanza.lua
util/stanza.lua
- changeset 0
- 3e3171b59028
- child 1
- b8787e859fd2
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| -1:000000000000 | 0:3e3171b59028 |
|---|---|
| 1 local t_insert = table.insert; | |
| 2 local t_remove = table.remove; | |
| 3 local format = string.format; | |
| 4 local tostring = tostring; | |
| 5 local setmetatable= setmetatable; | |
| 6 local pairs = pairs; | |
| 7 local ipairs = ipairs; | |
| 8 | |
| 9 module "stanza" | |
| 10 | |
| 11 stanza_mt = {}; | |
| 12 stanza_mt.__index = stanza_mt; | |
| 13 | |
| 14 function stanza(name, attr) | |
| 15 local stanza = { name = name, attr = attr or {}, last_add = {}}; | |
| 16 return setmetatable(stanza, stanza_mt); | |
| 17 end | |
| 18 | |
| 19 function stanza_mt:iq(attrs) | |
| 20 return self + stanza("iq", attrs) | |
| 21 end | |
| 22 function stanza_mt:message(attrs) | |
| 23 return self + stanza("message", attrs) | |
| 24 end | |
| 25 function stanza_mt:presence(attrs) | |
| 26 return self + stanza("presence", attrs) | |
| 27 end | |
| 28 function stanza_mt:query(xmlns) | |
| 29 return self:tag("query", { xmlns = xmlns }); | |
| 30 end | |
| 31 function stanza_mt:tag(name, attrs) | |
| 32 local s = stanza(name, attrs); | |
| 33 (self.last_add[#self.last_add] or self):add_child(s); | |
| 34 t_insert(self.last_add, s); | |
| 35 return self; | |
| 36 end | |
| 37 | |
| 38 function stanza_mt:text(text) | |
| 39 (self.last_add[#self.last_add] or self):add_child(text); | |
| 40 return self; | |
| 41 end | |
| 42 | |
| 43 function stanza_mt:up() | |
| 44 t_remove(self.last_add); | |
| 45 return self; | |
| 46 end | |
| 47 | |
| 48 function stanza_mt:add_child(child) | |
| 49 t_insert(self, child); | |
| 50 end | |
| 51 | |
| 52 function stanza_mt:child_with_name(name) | |
| 53 for _, child in ipairs(self) do | |
| 54 if child.name == name then return child; end | |
| 55 end | |
| 56 end | |
| 57 | |
| 58 function stanza_mt.__tostring(t) | |
| 59 local children_text = ""; | |
| 60 for n, child in ipairs(t) do | |
| 61 children_text = children_text .. tostring(child); | |
| 62 end | |
| 63 | |
| 64 local attr_string = ""; | |
| 65 if t.attr then | |
| 66 for k, v in pairs(t.attr) do attr_string = attr_string .. format(" %s='%s'", k, tostring(v)); end | |
| 67 end | |
| 68 | |
| 69 return format("<%s%s>%s</%s>", t.name, attr_string, children_text, t.name); | |
| 70 end | |
| 71 | |
| 72 function stanza_mt.__add(s1, s2) | |
| 73 return s:add_child(s2); | |
| 74 end | |
| 75 | |
| 76 | |
| 77 do | |
| 78 local id = 0; | |
| 79 function new_id() | |
| 80 id = id + 1; | |
| 81 return "lx"..id; | |
| 82 end | |
| 83 end | |
| 84 | |
| 85 function message(attr, body) | |
| 86 if not body then | |
| 87 return stanza("message", attr); | |
| 88 else | |
| 89 return stanza("message", attr):tag("body"):text(body); | |
| 90 end | |
| 91 end | |
| 92 function iq(attr) | |
| 93 if attr and not attr.id then attr.id = new_id(); end | |
| 94 return stanza("iq", attr or { id = new_id() }); | |
| 95 end | |
| 96 | |
| 97 function reply(orig) | |
| 98 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) }); | |
| 99 end | |
| 100 | |
| 101 function presence(attr) | |
| 102 return stanza("presence", attr); | |
| 103 end | |
| 104 |
