lua_open_file

--
-- http://nyelvek.inf.elte.hu/leirasok/Lua/index.php?chapter=12#section_6
--

print( arg[0] )

filename = "itr_ascii_minta.dat"

-- Opens a file in read
file = io.open(filename, "r")

-- prints the first line of the file
print("¤"..file:read().."¤\n")

-- ...It offsets the cursor from the 25 positions prior to the end of file. The read function prints remainder of the file from seek position.
file:seek("end",-25)
print("×"..file:read("*a").."×\n")

file:seek("set")
wholeFile = file:read("*a")
print(wholeFile)


--[[
Source:
    301  Pontok
    310   "pontszám szöveggel"       95.530      283.150     0.000         4315    0    0
    301  Vonalak
    301  Feliratok
    340      150.400      170.250     0.0      1     10   100   4   0   0   0 szöveg szóközzel
    341      253.470      214.660     0.0      1    105     1   1   1   0   0   0.0  1.00   1     1309      855 szöveg szóközzel2
    301  Jelkulcsok
    301  Ívek
Destination
    '301' = {"Pontok", "Vonalak", "Feliratok", "Jelkulcsok", "Ívek"}
    '310' = {" "pontszám szöveggel"       95.530      283.150     0.000         4315    0    0"}
    ...
]]
t = {}
file:seek("set")
for line in file:lines() do
    print(line)
    for k, v in string.gfind(line, "(%a+) (.+)") do
        t[k] = v
    end
end

-- closes the opened file
file:close()





t = {}
s = "from=world, to=Lua"
for k, v in string.gmatch(s, "(%w+)=(%w+)") do
  t[k] = v
end
for k, v in pairs(t) do
  print(k, v)
end