SymolicationEnabler unity post-processor

## SymbolicationEnabler.cs
/*
The MIT License (MIT)

Copyright (c) 2014 Andrew Fray, Marcelo Oliveira

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
*/
using UnityEngine;
using UnityEditor;
using UnityEditor.Callbacks;
using System.IO;

// unity builds by default don't include info to symbolicate iOS crashes.
// this post-processor turns on some flags to enable that.
// https://github.com/agentsim/Symbolicator
// http://www.markj.net/ios-crash-reports-unity3d-symbolicate/
class SymbolicationEnabler
{
#if UNITY_IPHONE
	[PostProcessBuild(1400)] // near the end
	public static void OnPostProcessBuild(BuildTarget target, string path)
	{
		if (target != BuildTarget.iPhone) {
			return; // How did we get here?
		}

		// Adjust dSYM generation
		var xcodeProjectPath = Path.Combine(path, "Unity-iPhone.xcodeproj");
		var pbxPath = Path.Combine(xcodeProjectPath, "project.pbxproj");

		var sb = new System.Text.StringBuilder();

		var xcodeProjectLines = File.ReadAllLines(pbxPath);
		foreach (var line in xcodeProjectLines) {

			// Remove from OTHER_LDFLAGS
			if (line.Contains("-Wl,-S,-x")) {
				continue;
			}

			// iOS Default when not present is dwarf-with-dsym
			if (line.Contains("DEBUG_INFORMATION_FORMAT")) {
				// Replace line to stripping on postprocess deployment flags
				sb.AppendLine("\t\t\t\tDEPLOYMENT_POSTPROCESSING = YES;");
				sb.AppendLine("\t\t\t\tSEPARATE_STRIP = YES;");
				sb.AppendLine("\t\t\t\tSTRIP_INSTALLED_PRODUCT = YES;");
				continue;
			}

			// Defaults to Yes
			if (line.Contains("COPY_PHASE_STRIP")) {
				continue;
			}

			// Defaults to Yes
			if (line.Contains("GCC_GENERATE_DEBUGGING_SYMBOLS")) {
				continue;
			}

			sb.AppendLine(line);
		}

		File.WriteAllText(pbxPath, sb.ToString());
	}
#endif
}