using UnityEngine;
using UnityEditor;

public class CopyAbsolutePath : MonoBehaviour {

   [MenuItem("Assets/絶対パスをクリップボードにコピー", false)]
   static void Execute()
   {
       // get select GO full path
       int instanceID = Selection.activeInstanceID;
       string path = AssetDatabase.GetAssetPath(instanceID);
       string fullPath = System.IO.Path.GetFullPath(path);


       // copy clipboard
       GUIUtility.systemCopyBuffer = fullPath;
       Debug.Log("Copy clipboard : \n" + fullPath);
   }
}