Extract host specific hammerspoon config to separate files

hammerspoon/host_config.lua

@@ -0,0 +1,20 @@
+local obj = {}
+
+function obj:init()
+  local env = require('env')
+  local conf_file = "hosts/" .. env.hostname .. ".lua"
+  local conf_req = "hosts." .. env.hostname
+
+  if self.file_exists(conf_file) then
+    print("loading host config: " .. conf_file)
+    local conf_module = require(conf_req)
+    conf_module:init()
+  end
+end
+
+function obj.file_exists(name)
+  local f=io.open(name,"r")
+  if f~=nil then io.close(f) return true else return false end
+end
+
+return obj