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-- import
-- the lua 5.0 loading mechanism is rather poor & relies upon the loadlib() fn
-- the lua 5.1 loading mechanism is simplicity itself
-- for now we need a bridge which will use the correct verion
function import_5_0(module)
-- imports the file into the program
-- for a module 'example'
-- this must load 'example.dll' or 'example.so'
-- and look for the fn 'Example_Init()' (note the capitalisation)
if rawget(_G,module)~=nil then return end -- module appears to be loaded
-- capitialising the first letter
local c=string.upper(string.sub(module,1,1))
local fnname=c..string.sub(module,2).."_Init"
local suffix,lib
-- note: as there seems to be no way in lua to determine the platform
-- we will try loading all possible names
-- providing one works, we can load
for _,suffix in pairs{".dll",".so"} do
lib=loadlib(module..suffix,fnname)
if lib then -- found
break
end
end
assert(lib,"error loading module:"..module)
lib() -- execute the function: initalising the lib
local m=rawget(_G,module) -- gets the module object
assert(m~=nil,"no module table found")
end
function import_5_1(module)
require(module)
end
if string.sub(_VERSION,1,7)=='Lua 5.0' then
import=import_5_0
else
import=import_5_1
end
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