util/termcolours.lua

-- Prosody IM v0.2
-- Copyright (C) 2008 Matthew Wild
-- Copyright (C) 2008 Waqas Hussain
-- 
-- This program is free software; you can redistribute it and/or
-- modify it under the terms of the GNU General Public License
-- as published by the Free Software Foundation; either version 2
-- of the License, or (at your option) any later version.
-- 
-- This program is distributed in the hope that it will be useful,
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-- GNU General Public License for more details.
-- 
-- You should have received a copy of the GNU General Public License
-- along with this program; if not, write to the Free Software
-- Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
--


local t_concat, t_insert = table.concat, table.insert;
local char, format = string.char, string.format;
local ipairs = ipairs;
module "termcolours"

local stylemap = {
			reset = 0; bright = 1, dim = 2, underscore = 4, blink = 5, reverse = 7, hidden = 8;
			black = 30; red = 31; green = 32; yellow = 33; blue = 34; magenta = 35; cyan = 36; white = 37;
			["black background"] = 40; ["red background"] = 41; ["green background"] = 42; ["yellow background"] = 43; ["blue background"] = 44; ["magenta background"] = 45; ["cyan background"] = 46; ["white background"] = 47;
			bold = 1, dark = 2, underline = 4, underlined = 4, normal = 0;
		}

local fmt_string = char(0x1B).."[%sm%s"..char(0x1B).."[0m";
function getstring(style, text)
	if style then
		return format(fmt_string, style, text);
	else
		return text;
	end
end

function getstyle(...)
	local styles, result = { ... }, {};
	for i, style in ipairs(styles) do
		style = stylemap[style];
		if style then
			t_insert(result, style);
		end
	end
	return t_concat(result, ";");
end

return _M;