มอดูล:Native name

require('strict');
local getArgs = require ('Module:Arguments').getArgs;
local lang_module = require ('Module:Lang');
local yes_no = require('Module:Yesno')
local defined_values = {
	italic = {'no'='no', 'off'='no'},										-- values accepted by |italic= and |italics=;  expects 'no' so 'off' must be translated
	paren = {'no'=true, 'off'=true, 'omit'=true},							-- values accepted by |paren=
	}
local messages_t = {													
	tag_required = 'จำเป็นต้องมีแท็กภาษา IETF ที่พารามิเตอร์ ',		-- for 
	name_required = 'จำเป็นต้องมีชื่อที่พารามิเตอร์ ',
	
	tag_required_idx = 'จำเป็นต้องมีแท็กภาษา IETF ใน |tag%s=',			-- for  when called from 
	name_required_idx = 'ต้องระบุชื่อใน |name%s=',
	empty_list = 'รายการว่างเปล่า',												-- for 
	positional = 'positional parameters not supported',
	br_list = ' lists not allowed',									-- for 
	list_markup = 'list markup expected for multiple names',
	malformed_param = 'ค่าพารามิเตอร์มีรูปแบบไม่ถูกต้อง',
	}
local help_links_t = {
	'native name' = 'ช่วยเหลือ',
	'native name checker' = 'ช่วยเหลือ',
	'native name list' = 'ช่วยเหลือ',
	}
local error_cats_t = {
	'native name' = 'หมวดหมู่:ข้อผิดพลาดแม่แบบ Native name',
	'native name checker' = 'หมวดหมู่:ข้อผิดพลาดแม่แบบ Native name checker',
	'native name list' = 'หมวดหมู่:ข้อผิดพลาดแม่แบบ Native name list',
	}
----------------------------------------------------------------------------------------
returns a formatted error message
local function error_msg (msg, template, index)
	local cat = ((0 == mw.title.getCurrentTitle().namespace) and error_cats_ttemplate) or ;
	if index then
		local message = string.format (msg, index);
		return string.format ('ข้อผิดพลาด : %s (%s)%s', template, message, help_links_ttemplate, cat)
	end
	return string.format ('ข้อผิดพลาด : %s (%s)%s', template, msg, help_links_ttemplate, cat)
end
--=-------------------------------------------------------------------------------
implements ; entry point from a module
is a table of parameter name/value pairs.  Parameters that are supported are:
	args_t1 - IETF language tag (required)
	args_t2 - the native name (required)
	args_t.italic - accepts string values 'no' or 'off';  expects 'no' so 'off' must be translated
	args_t.italics - alias of |italic=
	args_t.paren - accepts 'omit', 'off', or 'no'
	args_t.icon - alias of paren
	args_t.parensize - 
	args_t.fontsize - deprecated alias of |parensize=
	args_t.nolink - any value inhibits wikilinking of language name
	
	args_t.suppress_empty_list_error - when set to 'yes', suppresses an 'empty' error message; mostly for use within another template
this function calls these functions in Module:lang:
	_is_ietf_tag
	_lang
	_name_from_tag
TODO:
	add support for romanization and transliteration?
	add support for postfix so that 'mis' can render something like this:
		native|name|mis|Chotilapacquen|parent=omit|postfix= (Coahuiltecan)
			Chotilapacquen (Coahuiltecan)
**
local function _native_name (args_t)
	local template = (args_t.template and args_t.template) or 'native name';	-- for error messaging; use 'native name list' when called from native_name_list(), etc
	if not (args_t1 or args_t2) and yes_no (args_t.suppress_empty_list_error) then
		return ;																-- if empty list error is suppressed, return empty string
	elseif not args_t1 then
		return error_msg ((args_t.index and messages_t.tag_required_idx) or messages_t.tag_required, template, args_t.index)
	elseif not args_t2 then
		return error_msg ((args_t.index and messages_t.name_required_idx) or messages_t.name_required, template, args_t.index)
	end
	args_t.italic = args_t.italics or args_t.italic;							-- plural form first in  but singular form for 
	args_t.italic = defined_values.italicargs_t.italic or nil;				-- translate assigned value
	args_t.italics = nil;														-- so unset as unneeded
	args_t.paren = args_t.paren or args_t.icon;
	args_t.icon = nil;															-- unset as unneeded
	args_t.parensize = args_t.parensize or args_t.fontsize or '100%';
	args_t.fontsize = nil;														-- unset as unneeded
	if not lang_module._is_ietf_tag (args_t1) then
		args_t1 = lang_module._tag_from_name ({args_t1});
		if args_t1:find ('Error') then
			return error_msg ((args_t.index and messages_t.tag_required_idx) or messages_t.tag_required, template, args_t.index)
		end
	end
	local out_t = {};
	table.insert (out_t, lang_module._lang ({args_t1, args_t2, 'italic'=args_t.italic, 'template'=template}));
	if not defined_values.parenargs_t.paren then
		table.insert (out_t, ' ');
		table.insert (out_t, table.concat ({
			}));
		if args_t.nolink then
			table.insert (out_t, table.concat ({'(', lang_module._name_from_tag ({args_t1, 'template'=template}), ')'}));
		else
			if lang_module._is_ietf_tag (args_t1) then
				table.insert (out_t, table.concat ({'(', lang_module._name_from_tag ({args_t1, 'link' ='yes', 'template'=template}), ')'}));
			else
				table.insert (out_t, '(language?)');							-- TODO: any reason to keep this?
			end
		end
		table.insert (out_t, );
	end
	return table.concat (out_t);
end
------------------------------------------------------------------------------------
implements ; entry point from the template
local function native_name (frame)
	return _native_name (getArgs (frame));
end
--parensizen=
	args_t.nolinkn - any value inhibits wikilinking of language name
also supports:
	args_t.postfixn - wikitext to be appended to list item n (references other appropriate text)
	args_t.suppress_empty_list_error - when set to 'yes', suppresses an 'empty list' error message; mostly for use within another template
	
local function _native_name_list (args_t)
	if args_t1 then
		return error_msg (messages_t.positional, 'native name list')
	end
	local unsorted_enumerators_t = {}											-- unsorted  k/v table of tagn and namen enumerators where k is the enumerator and v is always true
	for param, _ in pairs (args_t) do											-- loop through all parameters
		local enumerator = mw.ustring.match (param, "^tag(%d+)$")				-- is this a |tagn= parameter?  extract enumerator if present
		if enumerator then														-- if there is an enumerator
			unsorted_enumerators_ttonumber(enumerator) = true					-- add enumerator to the table
		else
			local name_match = mw.ustring.match (param, "^name(%d+)$")			-- is this a |tagn= parameter?  extract enumerator if present
			if name_match then													-- if there is an enumerator
				unsorted_enumerators_ttonumber (name_match) = true			-- add enumerator to the table
			end
		end
	end
	local enumerators_t = {}													-- will hold a sorted sequence of enumerators
	for n, _ in pairs (unsorted_enumerators_t) do								-- loop through the k/v table of enumerators
		table.insert (enumerators_t, n)											-- add the enumerator to the sequence
	end
	table.sort (enumerators_t)													-- and ascending sort
	local list_t = {};															-- list of formatted native names goes here
	for _, n in ipairs (enumerators_t) do										-- loop through the sorted enumerators
		table.insert (list_t, table.concat ({
			_native_name ({														-- go render the native name
				args_t'tag'..n,
				args_t'name'..n,
				'italic' = args_t'italic'..n,
				'italics' = args_t'italics'..n,
				'paren' = args_t'paren'..n,
				'icon' = args_t'icon'..n,
				'parensize' = args_t'parensize'..n,
				'fontsize' = args_t'fontsize'..n,
				'nolink' = args_t'nolink'..n,
				'template' = 'native name list',								-- for error messaging
				'index' = n,													-- for error messaging
			}),
			args_t'postfix'..n or ,
		}));
	end
	
	if 0 == #list_t then
		return (yes_no (args_t.suppress_empty_list_error) and ) or			-- return empty string when error suppressed
			error_msg (messages_t.empty_list, 'native name list');				-- otherwise error
	elseif 1 == #list_t then
		return list_t1;														-- return the very short list; TODO: add error?
	else
		return require ('Module:List').unbulleted (list_t);						-- use unbulleted list from module
	end
end
--------------------------------------------------------------------------
implements ; entry point from the template
local function native_name_list (frame)
	return _native_name_list (getArgs (frame));
end
--native_name= is omitted or empty
	assigned value when no error
	error message on error
local function _native_name_checker (args_t)
	local value = args_t1;
	
	if not value then															-- if |native_name= is omitted or empty
		return;																	-- return nothing
	end
	
	local _, count = value:gsub ('lang="%a%a%a?%-"%a*', '%1');
	if 0 == count then
		return table.concat ({value, error_msg (messages_t.malformed_param, 'native name checker')}, ' ');	-- no  or  template
	end
	if 1 ') or not value:find ('$') then	-- must be wrapped in 'plainlist' div
			return table.concat ({value, error_msg (messages_t.list_markup, 'native name checker')}, ' ');
		end
	end
	
	if value:find () then								-- look for something that vaguely resembles a  tag
		return table.concat ({value, error_msg (messages_t.br_list, 'native name checker')}, ' ');
	end
	return value;																-- no failed tests, return the value as is
end
------------------------------------------------------------------
entry point from a module
implements 
local function native_name_checker (frame)
	return _native_name_checker (getArgs (frame));
end
--------------------------------------------------------------------------------------------
return {
	native_name = native_name,													-- template interface
	native_name_list = native_name_list,
	native_name_checker = native_name_checker,
	
	_native_name = _native_name,												-- other module interface
	_native_name_list = _native_name_list,
	_native_name_checker = _native_name_checker,
	}