ゲーム開発中とかによくあるファイル名が連番としてアセットをいい感じに一括リネームしたいときに役立つやつ

NumberingAssetRenamer.cs

using System;
using System.Linq;
using System.IO;
using System.Text.RegularExpressions;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
#if UNITY_EDITOR
using UnityEditor;
#endif

public class NumberingAssetRenamer : ScriptableObject
{
    [Serializable]
    public class Bundle
    {
        public string path;
        public string origin;
        public string next;
    }
    [SerializeField]
    List<Bundle> bundles;

    [ContextMenu("Rename")]
    public void Rename()
    {
        bundles.ForEach(b => RenameBundle(b));
    }

    void RenameBundle(Bundle bundle)
    {
#if UNITY_EDITOR
        // search paths
        var rootPath = Path.Combine(Application.dataPath, bundle.path);
        var childs = GetFilesAndDirsRecursively(rootPath);

        // all paths
        var paths = new List<string>()
        {
            rootPath,
            rootPath + ".meta",
        };
        paths.AddRange(childs);

        Func<string, string> getNextPath = p =>
        {
            var file = Path.GetFileName(p);
            var dir = Path.GetDirectoryName(p);
            var fileNext = file.Replace(bundle.origin, bundle.next);
            return Path.Combine(dir, fileNext);
        };

        // rename files
        foreach (var path in paths)
        {
            var nextPath = getNextPath(path);
            if (File.Exists(path))
            {
                Debug.Log("move file: " + path + " -> " + nextPath);
                File.Move(path, nextPath);
            }
        }

        // rename directories
        foreach (var path in paths)
        {
            var nextPath = getNextPath(path);
            if (Directory.Exists(path))
            {
                Debug.Log("move dir: " + path + " -> " + nextPath);
                Directory.Move(path, nextPath);
            }
        }

        // refresh dirty
        AssetDatabase.Refresh();
#endif
    }

    static List<string> GetFilesAndDirsRecursively(string path)
    {
        var files = Directory.GetFiles(path);
        var dirs = Directory.GetDirectories(path);
        var filesAndDirs = files.Union(dirs).ToList();

        foreach (var dir in Directory.GetDirectories(path))
        {
            var subs = GetFilesAndDirsRecursively(dir);
            filesAndDirs.AddRange(subs);
        }
        return filesAndDirs;
    }
}