【Unity】選択中のフォルダとすべてのサブフォルダのパスを取得するエディタ拡張

概要

using System.Linq;
using UnityEditor;
using UnityEngine;

public class Example
{
    [MenuItem( "Tools/Hoge" )]
    private static void Hoge()
    {
        var paths = Selection
            .GetFiltered<DefaultAsset>( SelectionMode.DeepAssets )
            .Select( x => AssetDatabase.GetAssetPath( x ) )
            .Where( x => AssetDatabase.IsValidFolder( x ) )
            .ToArray();

        foreach ( var path in paths )
        {
            Debug.Log( path );
        }
    }
}