Start the work on the icon changer

icon-changer.lua

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+--love-icon-changer library by RamiLego4Game (Rami Sabbagh)
+--[[
+- Usage:
+local iconChanger = require("icon-changer")
+
+local icodata = iconChanger.extractIcon(exeFile)
+]]
+
+local bit = require("bit")
+
+local bor,band,lshift,rshift = bit.bor,bit.band,bit.lshift,bit.rshift
+
+--==Internal Functions==--
+
+local function readNumber(str,bigEndian)
+  local num = 0
+  
+  if bigEndian then str = str:reverse() end
+  
+  for char in string.gmatch(str,".") do
+    local byte = string.byte(char)
+    
+    num = lshift(num,8)
+    num = bor(num, byte)
+  end
+  
+  return num
+end
+
+--==User API==--
+
+local icapi = {}
+
+function icapi.extractIcon(exeFile)
+  
+  --DOS Header
+  if exeFile:read(2) ~= "MZ" then return error("This is not an executable file !") end
+  
+  
+end
+
+return icapi