System.Data.SQLite

          strSql = strSql.Replace(
              String.Format("[{0}].", baseSchemaName), String.Empty);

          strSql = strSql.Replace(
              String.Format("{0}.", baseSchemaName), String.Empty);
        }
      }

      if ((cnn != null) &&
          ((cnn.Flags & SQLiteConnectionFlags.LogPrepare) == SQLiteConnectionFlags.LogPrepare))
      {
          LogMessage(0, String.Format("Preparing {{{0}}}...", strSql));
      }

      IntPtr stmt = IntPtr.Zero;
      IntPtr ptr = IntPtr.Zero;
      int len = 0;
      int n = 17;
      int retries = 0;
      byte[] b = ToUTF8(strSql);

    None = 0,
    ReadOnly = 0x01,
    ReadWrite = 0x02,
    Create = 0x04,
    SharedCache = 0x01000000,
    Default = 0x06,
  }

  /// <summary>
  /// The extra behavioral flags that can be applied to a connection.
  /// </summary>
  [Flags()]
  public enum SQLiteConnectionFlags
  {
      /// <summary>
      /// No extra flags.
      /// </summary>
      None = 0x0,

      /// <summary>
      /// Enable logging of all SQL statements to be prepared.
      /// </summary>
      LogPrepare = 0x1,

      /// <summary>
      /// The default extra flags for new connections.
      /// </summary>
      Default = None
  }

  // These are the options to the internal sqlite3_config call.
  internal enum SQLiteConfigOpsEnum
  {
    SQLITE_CONFIG_NONE = 0, // nil 
    SQLITE_CONFIG_SINGLETHREAD = 1, // nil 
    SQLITE_CONFIG_MULTITHREAD = 2, // nil 

  /// </item>
  /// <item>
  /// <description>Foreign Keys</description>
  /// <description>Enable foreign key constraints</description>
  /// <description>N</description>
  /// <description>False</description>
  /// </item>
  /// <item>
  /// <description>Flags</description>
  /// <description>Extra behavioral flags for the connection.  See the SQLiteConnectionFlags enumeration for possible values.</description>
  /// <description>N</description>
  /// <description>Default</description>
  /// </item>
  /// </list>
  /// </remarks>
  public sealed partial class SQLiteConnection : DbConnection, ICloneable
  {
    /// <summary>
    /// The default "stub" (i.e. placeholder) base schema name to use when
    /// returning column schema information.  Used as the initial value of

    /// <summary>
    /// The "stub" (i.e. placeholder) base schema name to use when returning
    /// column schema information.
    /// </summary>
    internal string _baseSchemaName;

    /// <summary>
    /// The extra behavioral flags for this connection, if any.  See the
    /// SQLiteConnectionFlags enumeration for a list of possible values.
    /// </summary>
    private SQLiteConnectionFlags _flags;

    /// <summary>
    /// Default command timeout
    /// </summary>
    private int _defaultTimeout = 30;

    internal bool _binaryGuid;

    /// <param name="connectionString">The connection string to use on the connection</param>
    public SQLiteConnection(string connectionString)
    {
#if !PLATFORM_COMPACTFRAMEWORK
      SQLiteLog.Initialize();
#endif

      _flags = SQLiteConnectionFlags.Default;
      _connectionState = ConnectionState.Closed;
      _connectionString = "";
      //_commandList = new List<WeakReference>();

      if (connectionString != null)
        ConnectionString = connectionString;
    }

    {
      if (_connectionState != ConnectionState.Closed)
        throw new InvalidOperationException();

      Close();

      SortedList<string, string> opts = ParseConnectionString(_connectionString);

      _flags = (SQLiteConnectionFlags)Enum.Parse(typeof(SQLiteConnectionFlags), FindKey(opts, "Flags", "Default"), true);

      string fileName;

      if (Convert.ToInt32(FindKey(opts, "Version", "3"), CultureInfo.InvariantCulture) != 3)
        throw new NotSupportedException("Only SQLite Version 3 is supported at this time");

      fileName = FindKey(opts, "Data Source", "");

    /// This can also be set in the ConnectionString with "Default Timeout"
    /// </summary>
    public int DefaultTimeout
    {
      get { return _defaultTimeout; }
      set { _defaultTimeout = value; }
    }

    /// <summary>
    /// Gets/sets the extra behavioral flags for this connection.  See the
    /// SQLiteConnectionFlags enumeration for a list of possible values.
    /// </summary>
    public SQLiteConnectionFlags Flags
    {
      get { return _flags; }
      set { _flags = value; }
    }

    /// <summary>
    /// Returns the version of the underlying SQLite database engine
    /// </summary>
#if !PLATFORM_COMPACTFRAMEWORK
    [Browsable(false), DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
#endif

            return SQLiteConvert.ToBoolean(value);
        }
        set
        {
            this["foreign keys"] = value;
        }
    }

    /// <summary>
    /// Gets/Sets the extra behavioral flags.
    /// </summary>
    [Browsable(true)]
    [DefaultValue(SQLiteConnectionFlags.Default)]
    public SQLiteConnectionFlags Flags
    {
        get
        {
            object value;

            if (TryGetValue("flags", out value))
            {
                if (value is SQLiteConnectionFlags)
                    return (SQLiteConnectionFlags)value;
                else if (value != null)
                    return (SQLiteConnectionFlags)TypeDescriptor.GetConverter(
                        typeof(SQLiteConnectionFlags)).ConvertFrom(value);
            }

            return SQLiteConnectionFlags.Default;
        }
        set
        {
            this["flags"] = value;
        }
    }

    /// <summary>
    /// Helper function for retrieving values from the connectionstring
    /// </summary>
    /// <param name="keyword">The keyword to retrieve settings for</param>
    /// <param name="value">The resulting parameter value</param>
    /// <returns>Returns true if the value was found and returned</returns>

  if {$code eq "Ok"} then {
    set keys [list null Version Synchronous UseUTF16Encoding Pooling \
                   BinaryGUID "Data Source" Uri "Default Timeout" \
                   Enlist FailIfMissing "Legacy Format" "Read Only" \
                   Password "Page Size" "Max Page Count" "Cache Size" \
                   DateTimeFormat DateTimeKind BaseSchemaName \
                   "Journal Mode" "Default IsolationLevel" "Foreign Keys" \
                   Flags]

    set values [list null 3 Full True False \
                     True test.db test.db 60 \
                     False True False True \
                     secret 4096 1024 8192 \
                     UnixEpoch Utc sqlite_schema \
                     Memory Serializable False \
                     Default]

    set propertyNames [list null Version SyncMode UseUTF16Encoding Pooling \
                            BinaryGUID DataSource Uri DefaultTimeout \
                            Enlist FailIfMissing LegacyFormat ReadOnly \
                            Password PageSize MaxPageCount CacheSize \
                            DateTimeFormat DateTimeKind BaseSchemaName \
                            JournalMode DefaultIsolationLevel ForeignKeys \
                            Flags]

    foreach key $keys value $values propertyName $propertyNames {
      set code [catch {
        object invoke _Dynamic${id}.Test${id} GetConnectionString \
            $key $value $propertyName
      } result]

Source=test\.db\} 0 \{test\.db, Uri=test\.db\} 0 \{60, Default Timeout=60\} 0\
\{False, Enlist=False\} 0 \{True, FailIfMissing=True\} 0 \{False, Legacy\
Format=False\} 0 \{True, Read Only=True\} 0 \{secret, Password=secret\} 0\
\{4096, Page Size=4096\} 0 \{1024, Max Page Count=1024\} 0 \{8192, Cache\
Size=8192\} 0 \{UnixEpoch, DateTimeFormat=UnixEpoch\} 0 \{Utc,\
DateTimeKind=Utc\} 0 \{sqlite_schema, BaseSchemaName=sqlite_schema\} 0\
\{Memory, Journal Mode=Memory\} 0 \{Serializable, Default\
IsolationLevel=Serializable\} 0 \{False, Foreign Keys=False\} 0 \{Default,\
Flags=Default\}$}}

###############################################################################

runTest {test data-1.17 {SQLiteConvert ToDateTime (Julian Day)} -body {
  set dateTime [object invoke System.Data.SQLite.SQLiteConvert ToDateTime \
      2455928.0 Utc]

      # NOTE: Evaluate the constructed [compileCSharp] command and return the
      #       result.
      #
      eval $command
    }

    proc setupDb {
            fileName {mode ""} {dateTimeFormat ""} {dateTimeKind ""} {flags "LogPrepare"}
            {extra ""} {delete true} {varName db} } {
      #
      # NOTE: For now, all test databases used by the test suite are placed into
      #       the temporary directory.  Each database used by a test should be
      #       cleaned up by that test using the "cleanupDb" procedure, below.
      #
      set fileName [file join [getDatabaseDirectory] [file tail $fileName]]

      #
      # NOTE: If the caller specified a DateTimeKind, add the necessary portion
      #       of the connection string now.
      #
      if {[string length $dateTimeKind] > 0} then {
        append connection {;DateTimeKind=${dateTimeKind}}
      }

      #
      # NOTE: If the caller specified a SQLiteConnectionFlags, add the necessary
      #       portion of the connection string now.
      #
      if {[string length $flags] > 0} then {
        append connection {;Flags=${flags}}
      }

      #
      # NOTE: If the caller specified an extra payload to the connection string,
      #       append it now.
      #
      if {[string length $extra] > 0} then {
        append connection \; $extra

###############################################################################

runTest {test tkt-448d663d11-1.2 {missing journal mode, WAL db} -body {
  set fileName tkt-448d663d11-1.2.db
  file copy -force [file join $path wal.db] \
      [file join [getDatabaseDirectory] $fileName]
  setupDb $fileName "" "" "" "" "" false
  sql execute -execute scalar $db "PRAGMA journal_mode;"
} -cleanup {
  cleanupDb $fileName
  unset -nocomplain db fileName
} -constraints \
{eagle monoBug28 command.sql compile.DATA SQLite System.Data.SQLite} -result \
{wal}}

###############################################################################

runTest {test tkt-448d663d11-1.3 {missing journal mode, non-WAL db} -body {
  set fileName tkt-448d663d11-1.3.db
  file copy -force [file join $path nonWal.db] \
      [file join [getDatabaseDirectory] $fileName]
  setupDb $fileName "" "" "" "" "" false
  sql execute -execute scalar $db "PRAGMA journal_mode;"
} -cleanup {
  cleanupDb $fileName
  unset -nocomplain db fileName
} -constraints \
{eagle monoBug28 command.sql compile.DATA SQLite System.Data.SQLite} -result \
{delete}}

###############################################################################

runTest {test tkt-448d663d11-1.5 {'Default' journal mode, WAL db} -body {
  set fileName tkt-448d663d11-1.5.db
  file copy -force [file join $path wal.db] \
      [file join [getDatabaseDirectory] $fileName]
  setupDb $fileName Default "" "" "" "" false
  sql execute -execute scalar $db "PRAGMA journal_mode;"
} -cleanup {
  cleanupDb $fileName
  unset -nocomplain db fileName
} -constraints \
{eagle monoBug28 command.sql compile.DATA SQLite System.Data.SQLite} -result \
{wal}}

###############################################################################

runTest {test tkt-448d663d11-1.6 {'Default' journal mode, non-WAL db} -body {
  set fileName tkt-448d663d11-1.6.db
  file copy -force [file join $path nonWal.db] \
      [file join [getDatabaseDirectory] $fileName]
  setupDb $fileName Default "" "" "" "" false
  sql execute -execute scalar $db "PRAGMA journal_mode;"
} -cleanup {
  cleanupDb $fileName
  unset -nocomplain db fileName
} -constraints \
{eagle monoBug28 command.sql compile.DATA SQLite System.Data.SQLite} -result \
{delete}}

###############################################################################

runTest {test tkt-448d663d11-1.8 {'Delete' journal mode, WAL db} -body {
  set fileName tkt-448d663d11-1.8.db
  file copy -force [file join $path wal.db] \
      [file join [getDatabaseDirectory] $fileName]
  setupDb $fileName Delete "" "" "" "" false
  sql execute -execute scalar $db "PRAGMA journal_mode;"
} -cleanup {
  cleanupDb $fileName
  unset -nocomplain db fileName
} -constraints \
{eagle monoBug28 command.sql compile.DATA SQLite System.Data.SQLite} -result \
{delete}}

###############################################################################

runTest {test tkt-448d663d11-1.9 {'Delete' journal mode, non-WAL db} -body {
  set fileName tkt-448d663d11-1.9.db
  file copy -force [file join $path nonWal.db] \
      [file join [getDatabaseDirectory] $fileName]
  setupDb $fileName Delete "" "" "" "" false
  sql execute -execute scalar $db "PRAGMA journal_mode;"
} -cleanup {
  cleanupDb $fileName
  unset -nocomplain db fileName
} -constraints \
{eagle monoBug28 command.sql compile.DATA SQLite System.Data.SQLite} -result \
{delete}}

###############################################################################

runTest {test tkt-448d663d11-1.15 {'Wal' journal mode, non-WAL db} -body {
  set fileName tkt-448d663d11-1.15.db
  file copy -force [file join $path nonWal.db] \
      [file join [getDatabaseDirectory] $fileName]
  setupDb $fileName Wal "" "" "" "" false
  sql execute -execute scalar $db "PRAGMA journal_mode;"
} -cleanup {
  cleanupDb $fileName
  unset -nocomplain db fileName
} -constraints \
{eagle monoBug28 command.sql compile.DATA SQLite System.Data.SQLite} -result \
{wal}}

###############################################################################

runTest {test tkt-448d663d11-1.16 {'Wal' journal mode, WAL db} -body {
  set fileName tkt-448d663d11-1.16.db
  file copy -force [file join $path wal.db] \
      [file join [getDatabaseDirectory] $fileName]
  setupDb $fileName Wal "" "" "" "" false
  sql execute -execute scalar $db "PRAGMA journal_mode;"
} -cleanup {
  cleanupDb $fileName
  unset -nocomplain db fileName
} -constraints \
{eagle monoBug28 command.sql compile.DATA SQLite System.Data.SQLite} -result \
{wal}}

###############################################################################

runTest {test tkt-448d663d11-1.18 {'Bad' journal mode, non-WAL db} -body {
  set fileName tkt-448d663d11-1.18.db
  file copy -force [file join $path nonWal.db] \
      [file join [getDatabaseDirectory] $fileName]
  setupDb $fileName Bad "" "" "" "" false
  sql execute -execute scalar $db "PRAGMA journal_mode;"
} -cleanup {
  cleanupDb $fileName
  unset -nocomplain db fileName
} -constraints \
{eagle monoBug28 command.sql compile.DATA SQLite System.Data.SQLite} -result \
{delete}}

###############################################################################

runTest {test tkt-448d663d11-1.19 {'Bad' journal mode, WAL db} -body {
  set fileName tkt-448d663d11-1.19.db
  file copy -force [file join $path wal.db] \
      [file join [getDatabaseDirectory] $fileName]
  setupDb $fileName Bad "" "" "" "" false
  sql execute -execute scalar $db "PRAGMA journal_mode;"
} -cleanup {
  cleanupDb $fileName
  unset -nocomplain db fileName
} -constraints \
{eagle monoBug28 command.sql compile.DATA SQLite System.Data.SQLite} -result \
{wal}}

###############################################################################

runSQLiteTestEpilogue
runTestEpilogue