特定のプラットフォームでファイルを退避する、Unity Editor Extension

SwitchPlatformRemoveFile.cs

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

[InitializeOnLoad]
public sealed class SwitchPlatformRemoveFile
{
	static void SetupItems ()
	{
		// ここに移動したいファイルやプラットフォームを記述しておく
		items.Add ( new Item ("Plugins/file.cs", BuildTarget.Android, BuildTarget.WebPlayer));
	}

	//----------------------------------------------------------------------------

	static List<Item> items = new List<Item> ();

	static SwitchPlatformRemoveFile ()
	{
		EditorUserBuildSettings.activeBuildTargetChanged += OnChangedPlatform;
		SetupItems ();
	}

	private static void OnChangedPlatform ()
	{
		BuildTarget target = EditorUserBuildSettings.activeBuildTarget;

		foreach (var item in items) {
			if (item.removeTargets.FindIndex ((i) => i.Equals (target)) != -1) {
				string fromFile = "Assets/" + item.fileName;
				string toFile = "Evacuation/" + item.fileName;
				MoveFile (fromFile, toFile);
			} else {
				string fromFile = "Evacuation/" + item.fileName;
				string toFile = "Assets/" + item.fileName;
				MoveFile (fromFile, toFile);
			}
		}	

		AssetDatabase.Refresh (ImportAssetOptions.Default);
	}


	private static void MoveFile (string fromFilePath, string toFilePath)
	{
		string dir = Path.GetDirectoryName (toFilePath);
		string metaFromFilePath = fromFilePath + ".meta";
		string metaToFilePath = toFilePath + ".meta";

		Directory.CreateDirectory (dir);

		if (File.Exists (fromFilePath)) {
			var data = File.ReadAllBytes (fromFilePath);
			File.WriteAllBytes (toFilePath, data);
			File.Delete (fromFilePath);
		}
		if (File.Exists (metaFromFilePath)) {
			var data = File.ReadAllBytes (metaFromFilePath);
			File.WriteAllBytes (metaToFilePath, data);
			File.Delete (metaFromFilePath);
		}
	}

	sealed class Item
	{
		public Item (string fileName, params BuildTarget[] removeTargets)
		{
			this.fileName = fileName;
			foreach (var target in removeTargets) {
				this.removeTargets.Add (target);
			}
		}

		public string fileName;
		public List<BuildTarget> removeTargets = new List<BuildTarget> ();
	}
}

以下の項目を更新して対象のファイルを増減する。例えばこんな感じ。

static void SetupItems ()
{
    items.Add ( new Item ("Plugins/file.cs", BuildTarget.Android, BuildTarget.WebPlayer));
    items.Add ( new Item ("hoge.cs", BuildTarget.Android));
    items.Add ( new Item ("Plugins/jan.cs", BuildTarget.WebPlayer));
}

第二引数以降で指定されたBuildTargetに指定されている場合、フォルダから削除されEvacuationフォルダに行く。逆をするとEvacuationから復帰する。