read str and parse it as table

tupleStringToTable.lua

function s2t(str)
  local t = {}
  local l = string.len(str)
  local key = ''
  local val = ''
  local oe = 0
  for i = 1, l do
    local s = string.sub(str, i, i)

    if s ~= ' ' then
      if oe % 2 ~= 1 then
        key = key..s
      else
        val = val..s
      end      
    end

    if s == ' ' or i == l then
      oe = oe + 1
      if oe % 2 == 0 then
        t[key] = val
        key = ''
        val = ''
      end
    end
  end
  return t
end

local str = 'world000 -2000 he-llo-0 1'
print(s2t(str)) -- { ["he-llo-0"] = 1, ["world000"] = -2000, } 

-- dump lua table
function dump(o)
   if type(o) == 'table' then
      local s = '{ '
      for k,v in pairs(o) do
         if type(k) ~= 'number' then k = '"'..k..'"' end
         s = s .. '['..k..'] = ' .. dump(v) .. ','
      end
      return s .. '} '
   else
      return tostring(o)
   end
end