From e7b12f687f09c9e0302af23f64e1dd295f85b228 Mon Sep 17 00:00:00 2001
From: Alexander Marek <alexander.marek@outlook.com>
Date: Fri, 22 Aug 2025 12:15:24 +0200
Subject: [PATCH 1/2] Added support for loading extensions (e.g.
 mod_spatialite)

---
 src/SQLite.cs | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)

diff --git a/src/SQLite.cs b/src/SQLite.cs
index 72525c56..5677605d 100644
--- a/src/SQLite.cs
+++ b/src/SQLite.cs
@@ -706,6 +706,28 @@ public void EnableLoadExtension (bool enabled)
 				throw SQLiteException.New (r, msg);
 			}
 		}
+		
+		/// <summary>
+		/// Load extension.
+		/// </summary>
+		public void LoadExtension (string filename)
+		{
+			SQLite3.Result r = SQLite3.LoadExtension (Handle, filename, null, out var msg);
+			if (r != SQLite3.Result.OK) {
+				throw SQLiteException.New (r, msg);
+			}
+		}
+
+		/// <summary>
+		/// Load extension.
+		/// </summary>
+		public void LoadExtension (string filename, string customInitFunctionName)
+		{
+			SQLite3.Result r = SQLite3.LoadExtension (Handle, filename, customInitFunctionName, out var msg);
+			if (r != SQLite3.Result.OK) {
+				throw SQLiteException.New (r, msg);
+			}
+		}
 
 #if !USE_SQLITEPCL_RAW
 		static byte[] GetNullTerminatedUtf8 (string s)
@@ -5050,6 +5072,9 @@ public enum ConfigOption : int
 		[DllImport(LibraryPath, EntryPoint = "sqlite3_enable_load_extension", CallingConvention=CallingConvention.Cdecl)]
 		public static extern Result EnableLoadExtension (IntPtr db, int onoff);
 
+		[DllImport (LibraryPath, EntryPoint = "sqlite3_load_extension", CallingConvention = CallingConvention.Cdecl)]
+		public static extern Result LoadExtension (IntPtr db, [MarshalAs (UnmanagedType.LPStr)] string filename, [MarshalAs (UnmanagedType.LPStr)] string initFunctionName, [MarshalAs(UnmanagedType.LPStr)] out string errorMsg);
+
 		[DllImport(LibraryPath, EntryPoint = "sqlite3_close", CallingConvention=CallingConvention.Cdecl)]
 		public static extern Result Close (IntPtr db);
 
@@ -5401,6 +5426,16 @@ public static Result EnableLoadExtension (Sqlite3DatabaseHandle db, int onoff)
 		{
 			return (Result)Sqlite3.sqlite3_enable_load_extension (db, onoff);
 		}
+		
+		public static Result LoadExtension (Sqlite3DatabaseHandle db, string fileName, string initFunctionName, out string errorMessage)
+		{
+			var result = (Result)Sqlite3.sqlite3_load_extension (db, SQLitePCL.utf8z.FromString (fileName),
+				SQLitePCL.utf8z.FromString (initFunctionName), out SQLitePCL.utf8z pzErrMsg);
+
+			errorMessage = pzErrMsg.utf8_to_string ();
+
+			return result;
+		}
 
 		public static int LibVersionNumber ()
 		{

From 147694dfe3df5a82b8e5f48c013f4adc89b29ab9 Mon Sep 17 00:00:00 2001
From: "alexander.marek" <alexander.marek@opti-q.com>
Date: Wed, 27 Aug 2025 09:06:22 +0200
Subject: [PATCH 2/2] fixed tests (by default they fail with "unable to find
 dll sqlite3")

---
 tests/SQLite.Tests/SQLite.Tests.csproj | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/tests/SQLite.Tests/SQLite.Tests.csproj b/tests/SQLite.Tests/SQLite.Tests.csproj
index 5c14b15d..25a7da11 100644
--- a/tests/SQLite.Tests/SQLite.Tests.csproj
+++ b/tests/SQLite.Tests/SQLite.Tests.csproj
@@ -12,8 +12,17 @@
     <PackageReference Include="NUnit" Version="3.12.0" />
     <PackageReference Include="NUnit3TestAdapter" Version="3.16.1" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.5.0" />
+    <PackageReference Include="SourceGear.sqlite3" Version="3.50.3" />
+    <PackageReference Include="SQLitePCLRaw.config.e_sqlite3" Version="3.0.1" />
   </ItemGroup>
 
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+    <DefineConstants>USE_SQLITEPCL_RAW;RELEASE</DefineConstants>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+    <DefineConstants>USE_SQLITEPCL_RAW;DEBUG</DefineConstants>
+  </PropertyGroup>
+
   <ItemGroup>
     <Compile Include="..\..\src\SQLite.cs">
       <Link>SQLite.cs</Link>