diff options
Diffstat (limited to 'util')
| -rw-r--r-- | util/stanza.lua | 50 |
1 files changed, 32 insertions, 18 deletions
diff --git a/util/stanza.lua b/util/stanza.lua index 50dc32bb..d16fc947 100644 --- a/util/stanza.lua +++ b/util/stanza.lua @@ -7,7 +7,7 @@ -- -local assert = assert; +local error = error; local t_insert = table.insert; local t_remove = table.remove; local t_concat = table.concat; @@ -45,31 +45,45 @@ local _ENV = nil; local stanza_mt = { __name = "stanza" }; stanza_mt.__index = stanza_mt; -local function check_name(name) - assert(type(name) == "string", "tag name is not a string, "..type(name)); - assert(#name > 0, "tag name is empty"); - assert(not s_find(name, "[<>& '\"]"), "tag name contains invalid characters"); - assert(valid_utf8(name), "tag name is invalid utf8"); +local function check_name(name, name_type) + if type(name) ~= "string" then + error("invalid "..name_type.." name: expected string, got "..type(name)); + elseif #name == 0 then + error("invalid "..name_type.." name: empty string"); + elseif s_find(name, "[<>& '\"]") then + error("invalid "..name_type.." name: contains invalid characters"); + elseif not valid_utf8(name) then + error("invalid "..name_type.." name: contains invalid utf8"); + end +end + +local function check_text(text, text_type) + if type(text) ~= "string" then + error("invalid "..text_type.." value: expected string, got "..type(text)); + elseif not valid_utf8(text) then + error("invalid "..text_type.." value: contains invalid utf8"); + end end + local function check_attr(attr) if attr ~= nil then - assert(type(attr) == "table", "attribute is not a table"); + if type(attr) ~= "table" then + error("invalid attributes, expected table got "..type(attr)); + end for k, v in pairs(attr) do - assert(type(k) == "string", "non-string key in attributes"); - assert(valid_utf8(k), "attribute name is not valid utf8"); - assert(type(v) == "string", "non-string value in attributes"); - assert(valid_utf8(v), "attribute value is not valid utf8"); + check_name(k, "attribute"); + check_text(v, "attribute"); + if type(v) ~= "string" then + error("invalid attribute value for '"..k.."': expected string, got "..type(v)); + elseif not valid_utf8(v) then + error("invalid attribute value for '"..k.."': contains invalid utf8"); + end end end end -local function check_text(text) - assert(type(text) == "string", "text is not a string"); - assert(valid_utf8(text), "text is not valid utf8"); -end local function new_stanza(name, attr, namespaces) - assert(name) - check_name(name); + check_name(name, "tag"); check_attr(attr); local stanza = { name = name, attr = attr or {}, namespaces = namespaces, tags = {} }; return setmetatable(stanza, stanza_mt); @@ -97,7 +111,7 @@ function stanza_mt:tag(name, attr, namespaces) end function stanza_mt:text(text) - check_text(text); + check_text(text, "text"); local last_add = self.last_add; (last_add and last_add[#last_add] or self):add_direct_child(text); return self; |