Detects when calling KSPUtil.ApplicationRootPath is unreliable and …

…works around it.

Fixes #58

Source/InstallChecker/KSPe.InstallChecker.csproj

@@ -82,6 +82,9 @@
     <Compile Include="ModuleInitializer.cs" />
     <Compile Include="InstallChecker.cs" />
     <Compile Include="Properties\MyVersion.cs" />
+    <Compile Include="..\KSPe\Util\KSPUtil.cs">
+      <Link>Util\KSPUtil.cs</Link>
+    </Compile>
   </ItemGroup>
   <ItemGroup>
     <Folder Include="Common\" />

Source/KSPe/IO/Path.cs

@@ -213,7 +213,7 @@ public static string AppRoot()
 		{
 			if (null != app_root) return app_root;
 			Origin();	// Forces the calcultation of the unreparsing stuff!
-			app_root = SIO.Path.GetFullPath(Multiplatform.FileSystem.GetRealPathname(global::KSPUtil.ApplicationRootPath));
+			app_root = SIO.Path.GetFullPath(Multiplatform.FileSystem.GetRealPathname(KSPUtil.ApplicationRootPath));
 			app_root = EnsureTrailingSeparatorOnDir(app_root);
 
 			process_dir(app_root);

Source/KSPe/KSPe.csproj

@@ -124,6 +124,7 @@
     <Compile Include="Util\Image.Local.cs" />
     <Compile Include="Util\Stopwatch.cs" />
     <Compile Include="Util\UrlTools.cs" />
+    <Compile Include="Util\KSPUtil.cs" />
   </ItemGroup>
   <ItemGroup>
     <None Include="Properties\Version.tt">

Source/KSPe/Util/KSPUtil.cs

@@ -0,0 +1,60 @@
+/*
+	This file is part of KSPe, a component for KSP Enhanced /L
+		© 2018-2023 LisiasT : http://lisias.net <support@lisias.net>
+
+	KSP Enhanced /L is double licensed, as follows:
+		* SKL 1.0 : https://ksp.lisias.net/SKL-1_0.txt
+		* GPL 2.0 : https://www.gnu.org/licenses/gpl-2.0.txt
+
+	And you are allowed to choose the License that better suit your needs.
+
+	KSP Enhanced /L is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+
+	You should have received a copy of the SKL Standard License 1.0
+	along with KSP Enhanced /L. If not, see <https://ksp.lisias.net/SKL-1_0.txt>.
+
+	You should have received a copy of the GNU General Public License 2.0
+	along with KSP Enhanced /L. If not, see <https://www.gnu.org/licenses/>.
+
+*/
+using SIO = System.IO;
+using SIR = System.Reflection;
+namespace KSPe
+{
+	/***
+	 * Brute force replacement for global::KSPUtil from Squad, allowing it to work outside the UnityEngine (sometimes arbitrary
+	 * and useless) limitations.
+	 */
+	public static class KSPUtil
+	{
+		private static string __ApplicationRootPath = null;
+		public static string ApplicationRootPath => __ApplicationRootPath ?? (__ApplicationRootPath = calculateApplicationRootPath());
+
+		private static string calculateApplicationRootPath()
+		{
+			string r;
+			try
+			{
+				r = global::KSPUtil.ApplicationRootPath;
+
+				// Playing safe
+				if (string.IsNullOrEmpty(r)) throw new System.NullReferenceException("global::KSPUtil.ApplicationRootPath returned an empty string!");
+			}
+			catch (System.Exception e)
+			{
+#if DEBUG
+				UnityEngine.Debug.LogWarningFormat("Coldn't rely on KSPUtil.ApplicationRootPath due [[{0}]]. Going brute force.", e.Message);
+#endif
+				r = SIO.Path.GetDirectoryName(System.Environment.GetCommandLineArgs()[0]);
+				if (r.Contains("KSP.app"))
+					r = r.Substring(0, r.IndexOf("KSP.app"));
+			}
+#if DEBUG
+			UnityEngine.Debug.LogFormat("Calculated ApplicationRootPath {0}.", r);
+			return r;
+#endif
+		}
+	}
+}