Strip Settings From Unity's Generated .sln Files

StripGeneratedSolutionSettings.cs

/*

v2: Matt Rix pointed out there's an undocumented ONGeneratedCSProjectFiles() callback
https://gist.github.com/MattRix/0bf8de88e16e8b494dbb

v1: Still available in the gist history if you want a FileSystemWatcher solution!

THE PROBLEM:

- Unity constantly rewrites its .sln files whenever you rename/add/remove scripts
- Their solution files includes a bunch of formatting/tab/etc settings
- Unfortunately, MonoDevelop / Xamarin Studio give these settings priority over your other defaults

(At least sometimes--over here I only get issues maybe once or twice a day)

THE SOLUTION:

- Strip out this entire block of settings whenever any .sln file changes

TO USE:

- Toss this script anywhere in an Editor/ folder
- Enjoy your tabs not getting constantly mangled!

Enjoy,
Matthew / Team Colorblind

*/

#if UNITY_EDITOR
using UnityEngine;
using UnityEditor;
using System.IO;
using System.Text.RegularExpressions;

public class StripGeneratedSolutionSettings : AssetPostprocessor
{
	/// <summary>
	/// Undocumented callback, thanks Matt Rix!
	/// </summary>
	private static void OnGeneratedCSProjectFiles()
	{
		string currentDir = Directory.GetCurrentDirectory();
		var slnFiles = Directory.GetFiles(currentDir, "*.sln");
		var csprojFiles = Directory.GetFiles(currentDir, "*.csproj");

		foreach (var filePath in slnFiles)
		{
			FixSolution(filePath);
		}

		foreach (var filePath in csprojFiles)
		{
			FixProject(filePath);
		}
	}

	/// <summary>
	/// Put any project changes here
	/// </summary>
	/// <returns><c>true</c>, if project was fixed, <c>false</c> otherwise.</returns>
	/// <param name="filePath">File path.</param>
	static bool FixProject(string filePath)
	{
		string content = File.ReadAllText(filePath);

		string searchString = "<TargetFrameworkVersion>v3.5</TargetFrameworkVersion>";
		string replaceString = "<TargetFrameworkVersion>v4.0</TargetFrameworkVersion>";

		if (content.IndexOf(searchString) != -1)
		{
			content = Regex.Replace(content, searchString, replaceString);
			File.WriteAllText(filePath, content);
			return true;
		}
		else
		{
			return false;
		}
	}

	/// <summary>
	/// Remove settings and .unityproj files
	/// </summary>
	/// <returns><c>true</c>, if solution was fixed, <c>false</c> otherwise.</returns>
	/// <param name="filePath">File path.</param>
	static bool FixSolution(string filePath)
	{
		string content = File.ReadAllText(filePath);
		string newContent = content;

		// xamarin studio/monodevelop barf on .unityproj files
		string stripUnityProject = @"Project.*?EndProject";
		newContent = Regex.Replace(newContent, stripUnityProject, new MatchEvaluator(CleanProjects), RegexOptions.Singleline);

		// strip out all solution preferences
		string stripSettings = @"GlobalSection\(MonoDevelopProperties\)\s=\spreSolution.*EndGlobalSection";
		newContent = Regex.Replace(newContent, stripSettings, "", RegexOptions.Singleline | RegexOptions.RightToLeft);

		// save back if it was changed
		if (content != newContent)
		{
			File.WriteAllText(filePath, newContent);
			return true;
		}
		else
		{
			return false;
		}
	}

	/// <summary>
	/// If our project match is a .unityproj file, strip it
	/// </summary>
	/// <returns>The projects.</returns>
	/// <param name="m">M.</param>
	static string CleanProjects(Match m)
	{
		string text = m.ToString();

		if (text.Contains(".unityproj"))
			return "";
		else
			return text;
	}
}
#endif