Build with Lua 5.2 without LUA_COMPAT_MODULE flag.

LUASOCKET_USE_GLOBAL flag enable create global variables when load socket/mime modules.

src/ltn12.lua

@@ -10,16 +10,19 @@
 local string = require("string")
 local table = require("table")
 local base = _G
-module("ltn12")
+ltn12 = {}
+local _M = ltn12
 
-filter = {}
-source = {}
-sink = {}
-pump = {}
+local filter,source,sink,pump = {},{},{},{}
+
+_M.filter = filter
+_M.source = source
+_M.sink = sink
+_M.pump = pump
 
 -- 2048 seems to be better in windows...
-BLOCKSIZE = 2048
-_VERSION = "LTN12 1.0.2"
+_M.BLOCKSIZE = 2048
+_M._VERSION = "LTN12 1.0.2"
 
 -----------------------------------------------------------------------------
 -- Filter stuff
@@ -38,7 +41,7 @@ end
 -- (thanks to Wim Couwenberg)
 function filter.chain(...)
     local arg = {...}
-    local n = #arg
+    local n = select('#',...)
     local top, index = 1, 1
     local retry = ""
     return function(chunk)
@@ -89,7 +92,7 @@ end
 function source.file(handle, io_err)
     if handle then
         return function()
-            local chunk = handle:read(BLOCKSIZE)
+            local chunk = handle:read(_M.BLOCKSIZE)
             if not chunk then handle:close() end
             return chunk
         end
@@ -112,8 +115,8 @@ function source.string(s)
     if s then
         local i = 1
         return function()
-            local chunk = string.sub(s, i, i+BLOCKSIZE-1)
-            i = i + BLOCKSIZE
+            local chunk = string.sub(s, i, i+_M.BLOCKSIZE-1)
+            i = i + _M.BLOCKSIZE
             if chunk ~= "" then return chunk
             else return nil end
         end
@@ -291,3 +294,4 @@ function pump.all(src, snk, step)
     end
 end
 
+return _M