Module:Color2dec

Module documentation[ create · purge ]

This documentation is transcluded from Module:Color2dec/doc.

--This function converts a valid hexadecimal colorcode into three decimal numbers: 
--	#bbccdd gives 187|187|204,  while #FF0 will give 255|255|0 
--Invalid color codes will give invalid or unpredictable results, or LUA errors.


local p = {}

--
local function hexdec ( arg )
	local dig  =  ( string.upper ( string.char ( arg ) ) );
	local dec  =  0;
	if     dig == 'F' then
		dec = 0xF
	elseif dig == 'E' then
		dec = 0xE
	elseif dig == 'D' then
		dec = 0xD
	elseif dig == 'C' then
		dec = 0xC
	elseif dig == 'B' then
		dec = 0xB
	elseif dig == 'A' then
		dec = 0xA
	else
		dec = dig
	end
	return dec;
end  

--
function p.tbcgen ( frame )
    local args = frame.args
	local tbctab = {};
	tbctab [1]   = '0';
	tbctab [5]   = args[2] or 'colour';
	local hexcod = args[1] or '#000000'; 
	if #hexcod == 7 then
		tbctab [2] = hexdec( string.byte (hexcod, 2)) * 16 + hexdec (string.byte (hexcod, 3))
		tbctab [3] = hexdec( string.byte (hexcod, 4)) * 16 + hexdec (string.byte (hexcod, 5))
		tbctab [4] = hexdec( string.byte (hexcod, 6)) * 16 + hexdec (string.byte (hexcod, 7))
	else
		tbctab [2] = hexdec( string.byte (hexcod, 2)) * 16 + hexdec (string.byte (hexcod, 2))
		tbctab [3] = hexdec( string.byte (hexcod, 3)) * 16 + hexdec (string.byte (hexcod, 3))
		tbctab [4] = hexdec( string.byte (hexcod, 4)) * 16 + hexdec (string.byte (hexcod, 4))
	end  
	return mw.getCurrentFrame():expandTemplate{ title = 'Tbc', args =  tbctab };
end  
	

return p;