Lua 模組載入器

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module(..., package.seeall)

local function load(modulename)
  local errmsg = ""
  -- Find source
  local modulepath = string.gsub(modulename, "%.", "/")
  for path in string.gmatch(package.path, "([^;]+)") do
    local filename = string.gsub(path, "%?", modulepath)
    local file = io.open(filename, "rb")
    if file then
      -- Compile and return the module
      return assert(loadstring(assert(file:read("*a")), filename))
    end
    errmsg = errmsg.."\n\tno file '"..filename.."' (checked with custom loader)"
  end
  return errmsg
end

-- Install the loader so that it's called just before the normal Lua loader
table.insert(package.loaders, 2, load)

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