Tag名を定数で扱えるように

gistfile1.cs

using UnityEngine;
using UnityEditor;
using System.Linq;
using UnityEditorInternal;
using System.Collections.Generic;
using System;

[InitializeOnLoad]
public class TagNameCreator
{
  private const string TAGNAME_HASH_KEY = "TagName_Hash";

	[MenuItem("Assets/TagNameCreator")]
	public static void _TagNameCreator ()
	{
		if (EditorApplication.isPlaying || Application.isPlaying)
			return;

		BuildTagName ();
	}
	
	static TagNameCreator ()
	{
		if (EditorApplication.isPlaying || Application.isPlaying)
			return;

		BuildTagName ();
	}

	static void BuildTagName ()
	{
		System.Text.StringBuilder builder = new System.Text.StringBuilder ();

		builder = WriteTagManagerClass (builder);


		string text = builder.ToString ().Replace (",}", "}");
		string assetPath = currentFolderPath + "../TagName.cs";
		
		if (AssetDatabase.LoadAssetAtPath (assetPath.Replace ("/Editor/..", ""), typeof(UnityEngine.Object)) != null && EditorPrefs.GetInt (TAGNAME_HASH_KEY, 0) == text.GetHashCode ())
			return;

		System.IO.File.WriteAllText (assetPath, text);
		EditorPrefs.SetInt (TAGNAME_HASH_KEY, text.GetHashCode ());
		AssetDatabase.Refresh (ImportAssetOptions.ImportRecursive);
	}

	static System.Text.StringBuilder WriteTagManagerClass (System.Text.StringBuilder builder)
	{
		List<string> tagNames = InternalEditorUtility.tags.ToList ();

		builder.AppendLine ("public class TagName");
		builder.AppendLine ("{");

		{
			WriteTagNameFunction (builder, tagNames);
		}

		{
			WriteTagNameArray (builder, tagNames);
		}

		builder.AppendLine ("}");
		return builder;
	}

	static void WriteTagNameFunction (System.Text.StringBuilder builder, List<string> tagNames)
	{
		tagNames.ToList ().ForEach (tagName =>
		{
			builder.Append ("\t").AppendLine ("/// <summary>");
			builder.Append ("\t").AppendFormat ("/// return \"{0}\"", tagName).AppendLine ();
			builder.Append ("\t").AppendLine ("/// </summary>");
			builder.Append ("\t").AppendFormat (@"public static string @{0} = ""{1}"";", Replace (tagName), tagName).AppendLine ();
		});
	}
	
	static void WriteTagNameArray (System.Text.StringBuilder builder, List<string> tagNames)
	{
		builder.Append ("\t").Append ("public static readonly string[] TAGS = new string[]{");
		tagNames.ForEach (tagName => builder.AppendFormat (@"""{0}"",", tagName));
		builder.AppendLine ("};");
	}

	static string Replace (string name)
	{
		string[] invalidChar = new string[] {" ", "!", "\"", "#", "$", "%", "&", "\'", "(", ")", "-", "=", "^", "~", "¥", "|", "[", "{", "@", "`", "]", "}", ":", "*", ";", "+", "/", "?", ".", ">", ",", "<"};
		invalidChar.ToList ().ForEach (s => name = name.Replace (s, string.Empty));
		return name;
	}

	static string currentFolderPath {
		get {
			string currentFilePath = new System.Diagnostics.StackTrace (true).GetFrame (0).GetFileName ();
			return "Assets" + currentFilePath.Substring (0, currentFilePath.LastIndexOf ("/") + 1).Replace (Application.dataPath, string.Empty);
		}
	}
}