Module:Color2dec

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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 
--The function "tbcgen" generates a complete 5-parameter string 
--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  

-- 
local function convert ( arg )
	local hex  =  arg;
	local dec  =  {};
	if #hex == 7 then
		dec [1] = hexdec ( string.byte (hex, 2)) * 16 + hexdec (string.byte (hex, 3))
		dec [2] = hexdec ( string.byte (hex, 4)) * 16 + hexdec (string.byte (hex, 5))
		dec [3] = hexdec ( string.byte (hex, 6)) * 16 + hexdec (string.byte (hex, 7))
	else
		dec [1] = hexdec ( string.byte (hex, 2)) * 16 + hexdec (string.byte (hex, 2))
		dec [2] = hexdec ( string.byte (hex, 3)) * 16 + hexdec (string.byte (hex, 3))
		dec [3] = hexdec ( string.byte (hex, 4)) * 16 + hexdec (string.byte (hex, 4))
	end  
	return dec;
end

-- 
function p.tsthex ( frame )
    local args = frame.args
	local hexcod = args[1] or '#000000'; 
	local septor = args[2] or '_'; 
	local decval = {};
	decval = convert ( hexcod ); 
	return table.concat( decval, septor  )
end  

-- 
function p.hexval ( frame )
    local args = frame.args
	local hexcode = args[1] or '#000000'; 
	local decval = {};
	decval = convert ( hexcode ); 
	return decval;
end


--
function p.tbcgen ( frame )
    local args = frame.args
	local tbctab = {};
	local hexcod = args[1] or '#000000'; 
	decval = convert ( hexcod ); 
	tbctab [1]   = '0';
	tbctab [2]   = decval [1];
	tbctab [3]   = decval [2];
	tbctab [4]   = decval [3];
	tbctab [5]   = args[2] or 'couleur';
	return mw.getCurrentFrame():expandTemplate{ title = 'Tbc', args =  tbctab };
end
	
return p;