[游戏开发]留个档，Unity的资源反向引用查询

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEditor;
using System.IO;
using System.Linq;
using System;
using System.Text;
using System.Reflection;

public class ReverseDependencies
{
    [MenuItem("优化工具/反向引用/刷新")]
    static void DoLogic()
    {
        DoSeach(null);
    }

    [MenuItem("优化工具/反向引用/刷新 From Config")]
    static void DoLogicIf()
    {
        Load();

		if (m_dicReverseDeps == null)
		{
			DoSeach(null);
		}
	}

    static void DoSeach(System.Action onFinish)
    {
        m_dicReverseDeps = new Dictionary<string, Dictionary<Type, List<string>>>();

        List<string> withoutExtensions = new List<string>() { ".prefab", ".unity", ".asset", ".mat", ".png", ".tga", ".jpg" };

		//string[] files = Directory.GetFiles(@"E:\copywork\UnityArt\Assets\FBX\Effect\Prefab_UI\AnJianTX", "*.*", SearchOption.AllDirectories)
		string[] files = Directory.GetFiles(Application.dataPath, "*.*", SearchOption.AllDirectories)
			.Where(s => withoutExtensions.Contains(Path.GetExtension(s).ToLower())).ToArray();
        int startIndex = 0;

        EditorApplication.update = delegate ()
        {
            string file = files[startIndex];

            bool isCancel = EditorUtility.DisplayCancelableProgressBar("检查资源中", file, (float)startIndex / (float)files.Length);

            ParseOne(file);

            startIndex++;
            if (isCancel || startIndex >= files.Length)
            {
                EditorUtility.ClearProgressBar();
                EditorApplication.update = null;
                startIndex = 0;
                Debug.Log("检查结束");

                Save();

                onFinish?.Invoke();
            }
        };
    }

    /// <summary>
    /// 内容集合， key对象GUID <类型, 引用对象GUID>
    /// </summary>
    private static Dictionary<string, Dictionary<Type, List<string>>> m_dicReverseDeps = null;

    private static void ParseOne(string strPath)
    {
        strPath = strPath.Replace("\\", "/");
        string strLocalPath = strPath.Replace(Application.dataPath, "Assets");

        string strKeyGUID = AssetDatabase.AssetPathToGUID(strLocalPath);    // 获取对象的GUID, 作为键值对的key
        Type typeKey = AssetDatabase.GetMainAssetTypeAtPath(strLocalPath);

        string[] arrDeps = AssetDatabase.GetDependencies(strLocalPath);   // 获取所有依赖;
        for (int i = 0; i < arrDeps.Length; i++)
        {
            string strGUIDDep = AssetDatabase.AssetPathToGUID(arrDeps[i]);

            Dictionary<Type, List<string>> dic;
            if (!m_dicReverseDeps.TryGetValue(strGUIDDep, out dic))
            {
                dic = new Dictionary<Type, List<string>>();
                m_dicReverseDeps.Add(strGUIDDep, dic);
            }

            List<string> list;
            if (!dic.TryGetValue(typeKey, out list))
            {
                list = new List<string>();
                dic.Add(typeKey, list);
            }

            list.Add(strKeyGUID);
        }
    }


    private static void Load()
    {
        string strPath = Path.Combine(Application.dataPath, "..", "reverse_dependencies.txt");
        if (!File.Exists(strPath))
        {
            return;
        }

        m_dicReverseDeps = new Dictionary<string, Dictionary<Type, List<string>>>();

        string strData = File.ReadAllText(strPath, Encoding.UTF8);
        string[] arrLines = strData.Split(new string[] { "\n"}, StringSplitOptions.RemoveEmptyEntries);
		for (int i = 0; i < arrLines.Length; i++)
        {
            var kv = arrLines[i].Split(new string[] { "{k}" }, StringSplitOptions.RemoveEmptyEntries);

            string strKey = kv[0];
            m_dicReverseDeps.Add(strKey, new Dictionary<Type, List<string>>());


            string[] arrParts = kv[1].Split(new string[] { "{p}" }, StringSplitOptions.RemoveEmptyEntries);
			for (int j = 0; j < arrParts.Length; j++)
			{
                string[]arrt2l = arrParts[j].Split(new string[] { "{t}" }, StringSplitOptions.RemoveEmptyEntries);

                string[] arrtype = arrt2l[0].Split(new string[] { "," }, StringSplitOptions.RemoveEmptyEntries);
                string[] arrlist = arrt2l[1].Split(new string[] { "," }, StringSplitOptions.RemoveEmptyEntries);


                Assembly asmb = Assembly.LoadFrom(arrtype[0]);
                Type type = asmb.GetType(arrtype[1]);

                m_dicReverseDeps[strKey].Add(type, new List<string>(arrlist));

            }
        }
    }

    private static void Save()
    {
        StringBuilder strBuilder = new StringBuilder();
		foreach (var item in m_dicReverseDeps)
        {
            strBuilder.Append(item.Key);
            strBuilder.Append("{k}");

            Dictionary<Type, List<string>> dic = item.Value;
			foreach (var tl in dic)
			{
                strBuilder.Append(tl.Key.Module.FullyQualifiedName);
                strBuilder.Append(",");
                strBuilder.Append(tl.Key.FullName);
                strBuilder.Append("{t}");

                List<string> list = tl.Value;
				for (int i = 0; i < list.Count; i++)
				{
                    strBuilder.Append(list[i]);
                    strBuilder.Append(",");
                }
                strBuilder.Append("{p}");
            }

            strBuilder.Append("\n");
        }

        string strPath = Path.Combine(Application.dataPath, "..", "reverse_dependencies.txt");
        File.WriteAllText(strPath, strBuilder.ToString(), Encoding.UTF8);
    }

    //----以下 对外 查询接口
    public static List<string> GetReverseDeps(string strGUID, Type type)
    {
        if (m_dicReverseDeps == null)
        {
            return null;
        }

        Dictionary<Type, List<string>> dic;
        if (!m_dicReverseDeps.TryGetValue(strGUID, out dic))
        {
            return null;
        }

        List<string> list;
        if (!dic.TryGetValue(type, out list))
        {
            return null;
        }

        return list;
    }

}

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