diff options
Diffstat (limited to 'util/stanza.lua')
| -rw-r--r-- | util/stanza.lua | 126 |
1 files changed, 87 insertions, 39 deletions
diff --git a/util/stanza.lua b/util/stanza.lua index a90d56b3..a8a417ab 100644 --- a/util/stanza.lua +++ b/util/stanza.lua @@ -98,7 +98,7 @@ function stanza_mt:query(xmlns) end function stanza_mt:body(text, attr) - return self:tag("body", attr):text(text); + return self:text_tag("body", text, attr); end function stanza_mt:text_tag(name, text, attr, namespaces) @@ -270,6 +270,34 @@ function stanza_mt:find(path) until not self end +local function _clone(stanza, only_top) + local attr, tags = {}, {}; + for k,v in pairs(stanza.attr) do attr[k] = v; end + local old_namespaces, namespaces = stanza.namespaces; + if old_namespaces then + namespaces = {}; + for k,v in pairs(old_namespaces) do namespaces[k] = v; end + end + local new = { name = stanza.name, attr = attr, namespaces = namespaces, tags = tags }; + if not only_top then + 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 + end + return setmetatable(new, stanza_mt); +end + +local function clone(stanza, only_top) + if not is_stanza(stanza) then + error("bad argument to clone: expected stanza, got "..type(stanza)); + end + return _clone(stanza, only_top); +end local escape_table = { ["'"] = "'", ["\""] = """, ["<"] = "<", [">"] = ">", ["&"] = "&" }; local function xml_escape(str) return (s_gsub(str, "['&<>\"]", escape_table)); end @@ -310,11 +338,8 @@ function stanza_mt.__tostring(t) end function stanza_mt.top_tag(t) - 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, xml_escape(tostring(v))); end end - end - return s_format("<%s%s>", t.name, attr_string); + local top_tag_clone = clone(t, true); + return tostring(top_tag_clone):sub(1,-3)..">"; end function stanza_mt.get_text(t) @@ -388,50 +413,32 @@ local function deserialize(serialized) end end -local function _clone(stanza) - local attr, tags = {}, {}; - for k,v in pairs(stanza.attr) do attr[k] = v; end - local old_namespaces, namespaces = stanza.namespaces; - if old_namespaces then - namespaces = {}; - for k,v in pairs(old_namespaces) do namespaces[k] = v; end - end - local new = { name = stanza.name, attr = attr, namespaces = namespaces, 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 - -local function clone(stanza) - if not is_stanza(stanza) then - error("bad argument to clone: expected stanza, got "..type(stanza)); - end - return _clone(stanza); -end - local function message(attr, body) if not body then return new_stanza("message", attr); else - return new_stanza("message", attr):tag("body"):text(body):up(); + return new_stanza("message", attr):text_tag("body", body); end end local function iq(attr) - if not (attr and attr.id) then + if not attr then + error("iq stanzas require id and type attributes"); + end + if not attr.id then error("iq stanzas require an id attribute"); end + if not attr.type then + error("iq stanzas require a type attribute"); + end return new_stanza("iq", attr); end local function reply(orig) + if not is_stanza(orig) then + error("bad argument to reply: expected stanza, got "..type(orig)); + end return new_stanza(orig.name, - orig.attr and { + { to = orig.attr.from, from = orig.attr.to, id = orig.attr.id, @@ -440,12 +447,23 @@ local function reply(orig) end local xmpp_stanzas_attr = { xmlns = xmlns_stanzas }; -local function error_reply(orig, error_type, condition, error_message) +local function error_reply(orig, error_type, condition, error_message, error_by) + if not is_stanza(orig) then + error("bad argument to error_reply: expected stanza, got "..type(orig)); + elseif orig.attr.type == "error" then + error("bad argument to error_reply: got stanza of type error which must not be replied to"); + end local t = reply(orig); t.attr.type = "error"; - t:tag("error", {type = error_type}) --COMPAT: Some day xmlns:stanzas goes here + if t.attr.from == error_by then + error_by = nil; + end + if type(error_type) == "table" then -- an util.error or similar object + error_type, condition, error_message = error_type.type, error_type.condition, error_type.text; + end + t:tag("error", {type = error_type, by = error_by}) --COMPAT: Some day xmlns:stanzas goes here :tag(condition, xmpp_stanzas_attr):up(); - if error_message then t:tag("text", xmpp_stanzas_attr):text(error_message):up(); end + if error_message then t:text_tag("text", error_message, xmpp_stanzas_attr); end return t; -- stanza ready for adding app-specific errors end @@ -493,6 +511,36 @@ else stanza_mt.pretty_top_tag = stanza_mt.top_tag; end +function stanza_mt.indent(t, level, indent) + if #t == 0 or (#t == 1 and type(t[1]) == "string") then + -- Empty nodes wouldn't have any indentation + -- Text-only nodes are preserved as to not alter the text content + -- Optimization: Skip clone of these since we don't alter them + return t; + end + + indent = indent or "\t"; + level = level or 1; + local tag = clone(t, true); + + for child in t:children() do + if type(child) == "string" then + -- Already indented text would look weird but let's ignore that for now. + if child:find("%S") then + tag:text("\n" .. indent:rep(level)); + tag:text(child); + end + elseif is_stanza(child) then + tag:text("\n" .. indent:rep(level)); + tag:add_direct_child(child:indent(level+1, indent)); + end + end + -- before the closing tag + tag:text("\n" .. indent:rep((level-1))); + + return tag; +end + return { stanza_mt = stanza_mt; stanza = new_stanza; |