Utility Script to create EOL Conversions.

EOLConversion.cs

// Author:  Lachee
// License: Public Domain - Do what you want with it
// Note:    Script to convert line endings in unity so you dont get those annoying warnings.
//          Simply put this script in a folder called Editor, then go Tools -> EOL Conversion -> Windows/Unix

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

public class EOLConversion
{
    [MenuItem("Tools/EOL Conversion/Windows")]
    private static void ConvertToWindows()
    {
        Convert("\r\n");
    }

    
    [MenuItem("Tools/EOL Conversion/Unix")]
    private static void ConvertToUnix()
    {
        Convert("\n");
    }

    /// <summary> Converts all the assets and returns a list of files that were modified </summary>
    public static string[] Convert(string lineEnding) {
        List<string> assetsConverted = new List<string>();
        string[] assetPaths = AssetDatabase.GetAllAssetPaths();
        int progress = 0;

        foreach(string assetPath in assetPaths)
        {
            EditorUtility.DisplayProgressBar("Converting Line Ending", assetPath, (progress++ / (float)assetPaths.Length));

            if(!assetPath.EndsWith(".cs")) continue;
            if (assetPath.StartsWith("Packages/")) continue;


            string content      = File.ReadAllText(assetPath);
            string contentNew   = Regex.Replace(content, @"\r\n|\n\r|\n|\r", lineEnding);

            if (content != contentNew) {
                File.WriteAllText(assetPath, contentNew);
                assetsConverted.Add(assetPath);
            }
        }
        
        EditorUtility.ClearProgressBar();
        return assetsConverted.ToArray();
    }
}