System.Data.SQLite

  <PropertyGroup>
    <!--
        NOTE: Enable tracing of events related to connection handling?  By
              default, this is disabled.
    -->
    <TraceConnection Condition="'$(TraceConnection)' == ''">false</TraceConnection>

    <!--
        NOTE: Enable tracing of events related to automatic detection of the
              native library directory within the native library pre-loading
              code?  By default, this is disabled.
    -->
    <TraceDetection Condition="'$(TraceDetection)' == ''">false</TraceDetection>

    <!--
        NOTE: Enable tracing of events related to CriticalHandle handling?  By
              default, this is disabled.
    -->
    <TraceHandle Condition="'$(TraceHandle)' == ''">false</TraceHandle>

    <!--

REM
REM NOTE: Enables the extra debug code helpful in troubleshooting issues.
REM
SET MSBUILD_ARGS=/p:CheckState=true
SET MSBUILD_ARGS=%MSBUILD_ARGS% /p:CountHandle=true
SET MSBUILD_ARGS=%MSBUILD_ARGS% /p:TraceConnection=true
SET MSBUILD_ARGS=%MSBUILD_ARGS% /p:TraceDetection=true
SET MSBUILD_ARGS=%MSBUILD_ARGS% /p:TraceHandle=true
SET MSBUILD_ARGS=%MSBUILD_ARGS% /p:TraceStatement=true
SET MSBUILD_ARGS=%MSBUILD_ARGS% /p:TrackMemoryBytes=true

#if TRACE
            "TRACE",
#endif

#if TRACE_CONNECTION
            "TRACE_CONNECTION",
#endif

#if TRACE_DETECTION
            "TRACE_DETECTION",
#endif

#if TRACE_HANDLE
            "TRACE_HANDLE",
#endif

#if TRACE_PRELOAD
            "TRACE_PRELOAD",

      NOTE: Enable various Trace.WriteLine statements included in the code,
            based on several criteria (see the "SQLite.NET.Settings.targets"
            file for more information)?
  -->
  <PropertyGroup Condition="'$(TraceConnection)' != 'false'">
    <DefineConstants>$(DefineConstants);TRACE_CONNECTION</DefineConstants>
  </PropertyGroup>

  <PropertyGroup Condition="'$(TraceDetection)' != 'false'">
    <DefineConstants>$(DefineConstants);TRACE_DETECTION</DefineConstants>
  </PropertyGroup>

  <PropertyGroup Condition="'$(TraceHandle)' != 'false'">
    <DefineConstants>$(DefineConstants);TRACE_HANDLE</DefineConstants>
  </PropertyGroup>

  <PropertyGroup Condition="'$(TracePreLoad)' != 'false'">
    <DefineConstants>$(DefineConstants);TRACE_PRELOAD</DefineConstants>

/********************************************************
 * ADO.NET 2.0 Data Provider for SQLite Version 3.X
 * Written by Robert Simpson (robert@blackcastlesoft.com)
 *
 * Released to the public domain, use at your own risk!
 ********************************************************/

namespace System.Data.SQLite
{
  using System;
  using System.Globalization;

#if !NET_COMPACT_20 && (TRACE_DETECTION || TRACE_SHARED || TRACE_PRELOAD || TRACE_HANDLE)
  using System.Diagnostics;
#endif

#if PRELOAD_NATIVE_LIBRARY
  using System.Collections.Generic;
  using System.IO;
  using System.Reflection;

                  localFileName); /* throw */

              string xmlConfigFileName = Path.Combine(
                  directory, XmlConfigFileName);

              if (File.Exists(xmlConfigFileName))
              {
#if !NET_COMPACT_20 && TRACE_DETECTION
                  try
                  {
                      Trace.WriteLine(String.Format(
                          CultureInfo.CurrentCulture,
                          "Native library pre-loader found XML configuration file " +
                          "via code base for currently executing assembly: \"{0}\"",
                          xmlConfigFileName)); /* throw */

                  return true;
              }

              List<string> matches = null;

              if (CheckForArchitecturesAndPlatforms(directory, ref matches) > 0)
              {
#if !NET_COMPACT_20 && TRACE_DETECTION
                  try
                  {
                      Trace.WriteLine(String.Format(
                          CultureInfo.CurrentCulture,
                          "Native library pre-loader found native sub-directories " +
                          "via code base for currently executing assembly: \"{0}\"",
                          ListToString(matches))); /* throw */

          //       wrong value in some circumstances.  Please refer to ticket
          //       [9ac9862611] for further information.
          //
          if ((IntPtr.Size == sizeof(int)) &&
              String.Equals(processorArchitecture, "AMD64",
                  StringComparison.OrdinalIgnoreCase))
          {
#if !NET_COMPACT_20 && TRACE_DETECTION
              //
              // NOTE: When tracing is enabled, save the originally detected
              //       processor architecture before changing it.
              //
              string savedProcessorArchitecture = processorArchitecture;
#endif

              //
              // NOTE: We know that operating systems that return "AMD64" as
              //       the processor architecture are actually a superset of
              //       the "x86" processor architecture; therefore, return
              //       "x86" when the pointer size is 32-bits.
              //
              processorArchitecture = "x86";

#if !NET_COMPACT_20 && TRACE_DETECTION
              try
              {
                  //
                  // NOTE: Show that we hit a fairly unusual situation (i.e.
                  //       the "wrong" processor architecture was detected).
                  //
                  Trace.WriteLine(String.Format(

        #
        foreach defineConstant [list \
            CHECK_STATE COUNT_HANDLE DEBUG INTEROP_CODEC INTEROP_DEBUG \
            INTEROP_EXTENSION_FUNCTIONS INTEROP_LEGACY_CLOSE INTEROP_LOG \
            INTEROP_TEST_EXTENSION INTEROP_VIRTUAL_TABLE NET_20 NET_35 \
            NET_40 NET_45 NET_451 NET_COMPACT_20 PLATFORM_COMPACTFRAMEWORK \
            PRELOAD_NATIVE_LIBRARY RETARGETABLE SQLITE_STANDARD \
            THROW_ON_DISPOSED TRACE TRACE_CONNECTION TRACE_DETECTION \
            TRACE_HANDLE TRACE_PRELOAD TRACE_SHARED TRACE_STATEMENT \
            TRACE_WARNING TRACK_MEMORY_BYTES USE_ENTITY_FRAMEWORK_6 \
            USE_INTEROP_DLL USE_PREPARE_V2 WINDOWS] {
          #
          # NOTE: Check if the compile-time option is listed in the list of
          #       "define constants" kept track of by the managed assembly.
          #
          checkForSQLiteDefineConstant $::test_channel $defineConstant
        }