unity實現批量刪除Prefab上Miss的腳本組件

感謝:https://www.cnblogs.com/AaronBlogs/p/7976054.html 

我的unity版本: unity2017.2.0p4

本篇文章將根據我個人的實踐進行記錄，有些情況也許沒有考慮進去。隨着unity版本的提升，也許會有現成的api可以直接實現(像unity2019中的GameObjectUtility.RemoveMonoBehavioursWithMissingScript(go)，具體沒有測試)

實現目標：

     到       ，並且在后續的操作中圖一的情況不會恢復。

先說明一下，miss腳本的兩種情況:

   在Inpsector面板中看起來是這樣的，打開對應的prefab文件，繼續往下看內在的區別。

執行工具后，prefab文件的變化成了下面的結構:

下面貼上代碼:

 

using System;
using System.IO;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEditor;
using System.Text.RegularExpressions;

namespace LgsProject
{
    public partial class LgsTools_Optimization
    {
        [MenuItem("LgsTools/智能檢測/Remove Missing-MonoBehavior Component")]
        static public void RemoveMissComponent()
        {
            string fullPath = Application.dataPath + "/Art/Prefabs";
            fullPath = fullPath.Replace("/", @"\");
            //List<string> pathList = GetAssetsPathByFullPath(fullPath, "*.prefab", SearchOption.AllDirectories);
            List<string> pathList = GetAssetsPathByRelativePath(new string[] { "Assets/Art/Prefabs" }, "t:Prefab", SearchOption.AllDirectories);
            int counter = 0;
            for (int i = 0, iMax = pathList.Count; i < iMax; i++)
            {
                EditorUtility.DisplayProgressBar("處理進度", string.Format("{0}/{1}", i + 1, iMax), (i + 1f) / iMax);
                if (CheckMissMonoBehavior(pathList[i]))
                    ++counter;
            }
            EditorUtility.ClearProgressBar();
            EditorUtility.DisplayDialog("處理結果", "完成修改，修改數量 : " + counter, "確定");
            AssetDatabase.Refresh();
        }

        /// <summary>
        /// 獲取項目中某種資源的路徑
        /// </summary>
        /// <param name="fullPath">win的路徑格式，以 "\"為分隔符</param>
        /// <param name="filter">win的資源過濾模式 例如 : *.prefab</param>
        /// <param name="searchOption">目錄的搜索方式</param>
        /// <returns></returns>
        static List<string> GetAssetsPathByFullPath(string fullPath, string filter, SearchOption searchOption)
        {
            List<string> pathList = new List<string>();
            string[] files = Directory.GetFiles(fullPath, filter, searchOption);
            for (int i = 0; i < files.Length; i++)
            {
                string path = files[i];
                path = "Assets" + path.Substring(Application.dataPath.Length, path.Length - Application.dataPath.Length);
                pathList.Add(path);
            }

            return pathList;
        }


        /// <summary>
        /// 獲取項目中某種資源的路徑
        /// </summary>
        /// <param name="relativePath">unity路徑格式，以 "/" 為分隔符</param>
        /// <param name="filter">unity的資源過濾模式 https://docs.unity3d.com/ScriptReference/AssetDatabase.FindAssets.html </param>
        /// <param name="searchOption"></param>
        /// <returns></returns>
        static List<string> GetAssetsPathByRelativePath(string[] relativePath, string filter, SearchOption searchOption)
        {
            List<string> pathList = new List<string>();
            string[] guids = AssetDatabase.FindAssets(filter, relativePath);
            for (int i = 0; i < guids.Length; i++)
            {
                string path = AssetDatabase.GUIDToAssetPath(guids[i]);
                pathList.Add(path);
            }

            return pathList;
        }

        /// <summary>  
        /// 刪除一個Prefab上的空腳本  
        /// </summary>  
        /// <param name="path">prefab路徑 例Assets/Resources/FriendInfo.prefab</param>  
        static bool CheckMissMonoBehavior(string path)
        {
            bool isNull = false;
            string textContent = File.ReadAllText(path);
            Regex regBlock = new Regex("MonoBehaviour");
            // 以"---"划分組件  
            string[] strArray = textContent.Split(new string[] { "---" }, StringSplitOptions.RemoveEmptyEntries);
            for (int i = 0; i < strArray.Length; i++)
            {
                string blockStr = strArray[i];
                if (regBlock.IsMatch(blockStr))
                {
                    // 模塊是 MonoBehavior  
                    //(?<名稱>子表達式)  含義:將匹配的子表達式捕獲到一個命名組中
                    Match guidMatch = Regex.Match(blockStr, "m_Script: {fileID: (.*), guid: (?<GuidValue>.*?), type: [0-9]}");
                    if (guidMatch.Success)
                    {
                        string guid = guidMatch.Groups["GuidValue"].Value;
                        if (!File.Exists(AssetDatabase.GUIDToAssetPath(guid)))
                        {
                            isNull = true;
                            textContent = DeleteContent(textContent, blockStr);
                        }
                    }

                    Match fileIdMatch = Regex.Match(blockStr, @"m_Script: {fileID: (?<IdValue>\d+)}");
                    if (fileIdMatch.Success)
                    {
                        string idValue = fileIdMatch.Groups["IdValue"].Value;
                        if (idValue.Equals("0"))
                        {
                            isNull = true;
                            textContent = DeleteContent(textContent, blockStr);
                        }
                    }
                }
            }
            if (isNull)
            {
                // 有空腳本 寫回prefab  
                File.WriteAllText(path, textContent);
            }
            return isNull;
        }

        // 刪除操作  
        static string DeleteContent(string input, string blockStr)
        {
            input = input.Replace("---" + blockStr, "");
            Match idMatch = Regex.Match(blockStr, "!u!(.*) &(?<idValue>.*?)\n");
            if (idMatch.Success)
            {
                // 獲取 MonoBehavior的fileID 
                string fileID = idMatch.Groups["idValue"].Value;
                Regex regex = new Regex("  - (.*): {fileID: " + fileID + "}\n");
                input = regex.Replace(input, "");
            }

            return input;
        }
    }
}

 

另外，在實踐的過程中遇到了一個報錯，順便記錄一下:

CheckConsistency: GameObject does not reference component MonoBehaviour. Fixing.

看下圖，正常情況下prefab文件中區域1和區域2是對應的，如果不對應會報以上錯誤。