-- Prosody IM

-- Copyright (C) 2008-2010 Matthew Wild

-- Copyright (C) 2008-2010 Waqas Hussain

-- 

-- This project is MIT/X11 licensed. Please see the

-- COPYING file in the source package for more information.

--

local gmatch = string.gmatch;

local t_concat, t_insert = table.concat, table.insert;

local to_byte, to_char = string.byte, string.char;

local function _latin1toutf8(str)

	if not str then return str; end

	local p = {};

	for ch in gmatch(str, ".") do

		ch = to_byte(ch);

		if (ch < 0x80) then

			t_insert(p, to_char(ch));

		elseif (ch < 0xC0) then

			t_insert(p, to_char(0xC2, ch));

		else

			t_insert(p, to_char(0xC3, ch - 64));

		end

	end

	return t_concat(p);

end

function latin1toutf8()

	local function assert_utf8(latin, utf8)

			assert_equal(_latin1toutf8(latin), utf8, "Incorrect UTF8 from Latin1: "..tostring(latin));

	end

	assert_utf8("", "")

	assert_utf8("test", "test")

	assert_utf8(nil, nil)

	assert_utf8("foobar.r\229kat.se", "foobar.r\195\165kat.se")

end