File

doap: Update XEP for mostly editorial changes XEP-0004: Changes <reported> which is not implemented XEP-0030: A note on some implementations not advertising disco#info XEP-0106: Now references PRECIS which we don't have access to XEP-0107: Editorial fixing of a typo XEP-0133: Removal of 'Get User Password' already done in 21a1b9fb08a1, editorial changes XEP-0153: Editorial changes XEP-0198: Editorial changes and clarifications XEP-0223: Updated security considerations XEP-0292: The difference is that the iq syntax implemented in mod_vcard4 is removed. To become compliant, simply unload this module. XEP-0313: Editorial and minor changes XEP-0398: Advanced to Stable, no other changes XEP-0398: Now mentions the implementation method used in mod_vcard_legacy XEP-0402: Changes only affecting clients XEP-0421: Added requirements we already satisfy XEP-0440: Editorial changes XEP-0478: Editorial changes Due to their size, review of changes to XEP-0045 and XEP-0060 has been left for later.

local m_type = math.type;

local function unescape_token(escaped_token)
	local unescaped = escaped_token:gsub("~1", "/"):gsub("~0", "~")
	return unescaped
end

local function resolve_json_pointer(ref, path)
	local ptr_len = #path + 1
	for part, pos in path:gmatch("/([^/]*)()") do
		local token = unescape_token(part)
		if not (type(ref) == "table") then
			return nil
		end
		local idx = next(ref)
		local new_ref

		if type(idx) == "string" then
			new_ref = ref[token]
		elseif m_type(idx) == "integer" then
			local i = tonumber(token)
			if token == "-" then
				i = #ref + 1
			end
			new_ref = ref[i + 1]
		else
			return nil, "invalid-table"
		end

		if pos == ptr_len then
			return new_ref
		elseif type(new_ref) == "table" then
			ref = new_ref
		elseif not (type(ref) == "table") then
			return nil, "invalid-path"
		end

	end
	return ref
end

return { resolve = resolve_json_pointer }