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#region Disclaimer / License
// Copyright (C) 2015, The Duplicati Team
// http://www.duplicati.com, info@duplicati.com
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library 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. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
//
#endregion
using System;
using System.Collections.Generic;
using System.Text;
namespace Duplicati.Library.SQLiteHelper
{
public static class SQLiteLoader
{
/// <summary>
/// A cached copy of the type
/// </summary>
private static Type m_type = null;
/// <summary>
/// Returns the SQLiteCommand type for the current architecture
/// </summary>
public static Type SQLiteConnectionType
{
get
{
if (m_type == null)
{
string filename = "System.Data.SQLite.dll";
string basePath = System.IO.Path.Combine(System.IO.Path.GetDirectoryName(System.Reflection.Assembly.GetExecutingAssembly().Location), "SQLite");
//Default is to use the pinvoke version which requires a native .dll/.so
string assemblyPath = System.IO.Path.Combine(basePath, "pinvoke");
if (!Duplicati.Library.Utility.Utility.IsMono)
{
//If we run with MS.Net we can use the mixed mode assemblies
if (Library.Utility.Utility.Is64BitProcess)
{
if (System.IO.File.Exists(System.IO.Path.Combine(System.IO.Path.Combine(basePath, "win64"), filename)))
assemblyPath = System.IO.Path.Combine(basePath, "win64");
}
else
{
if (System.IO.File.Exists(System.IO.Path.Combine(System.IO.Path.Combine(basePath, "win32"), filename)))
assemblyPath = System.IO.Path.Combine(basePath, "win32");
}
} else {
//On Mono, we try to find the Mono version of SQLite
//This secret environment variable can be used to support older installations
var envvalue = System.Environment.GetEnvironmentVariable("DISABLE_MONO_DATA_SQLITE");
if (!Utility.Utility.ParseBool(envvalue, envvalue != null))
{
foreach(var asmversion in new string[] {"4.0.0.0", "2.0.0.0"})
{
try
{
Type t = System.Reflection.Assembly.Load(string.Format("Mono.Data.Sqlite, Version={0}, Culture=neutral, PublicKeyToken=0738eb9f132ed756", asmversion)).GetType("Mono.Data.Sqlite.SqliteConnection");
if (t != null && t.GetInterface("System.Data.IDbConnection", false) != null)
{
Version v = new Version((string)t.GetProperty("SQLiteVersion").GetValue(null, null));
if (v >= new Version(3, 6, 3))
{
m_type = t;
return m_type;
}
}
} catch {
}
}
Console.WriteLine("Failed to load Mono.Data.Sqlite.SqliteConnection, reverting to built-in.");
}
}
m_type = System.Reflection.Assembly.LoadFile(System.IO.Path.Combine(assemblyPath, filename)).GetType("System.Data.SQLite.SQLiteConnection");
}
return m_type;
}
}
}
}
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