protected override void ReadContent(ByteReader reader)
{
this.DataBlocks = new Dictionary<ushort, DataBlock>(ItemCount);
for (var i = 0; i < ItemCount; i++)
{
var block = new DataBlock();
block.Page = this;
block.Position = new PageAddress(this.PageID, reader.ReadUInt16());
block.ExtendPageID = reader.ReadUInt32();
var size = reader.ReadUInt16();
block.Data = reader.ReadBytes(size);
this.DataBlocks.Add(block.Position.Index, block);
}
}
/// <summary>
/// Reads an element (key-value) from an reader
/// </summary>
private BsonValue ReadElement(ByteReader reader, out string name)
{
var type = reader.ReadByte();
name = reader.ReadCString();
if (type == 0x01) // Double
{
return(reader.ReadDouble());
}
else if (type == 0x02) // String
{
return(reader.ReadBsonString());
}
else if (type == 0x03) // Document
{
return(this.ReadDocument(reader));
}
else if (type == 0x04) // Array
{
return(this.ReadArray(reader));
}
else if (type == 0x05) // Binary
{
var length = reader.ReadInt32();
var subType = reader.ReadByte();
var bytes = reader.ReadBytes(length);
switch (subType)
{
case 0x00: return(bytes);
case 0x04: return(new Guid(bytes));
}
}
else if (type == 0x07) // ObjectId
{
return(new ObjectId(reader.ReadBytes(12)));
}
else if (type == 0x08) // Boolean
{
return(reader.ReadBoolean());
}
else if (type == 0x09) // DateTime
{
var ts = reader.ReadInt64();
// catch specific values for MaxValue / MinValue #19
if (ts == 253402300800000)
{
return(DateTime.MaxValue);
}
if (ts == -62135596800000)
{
return(DateTime.MinValue);
}
var date = BsonValue.UnixEpoch.AddMilliseconds(ts);
return(_utcDate ? date : date.ToLocalTime());
}
else if (type == 0x0A) // Null
{
return(BsonValue.Null);
}
else if (type == 0x10) // Int32
{
return(reader.ReadInt32());
}
else if (type == 0x12) // Int64
{
return(reader.ReadInt64());
}
else if (type == 0x13) // Decimal
{
return(reader.ReadDecimal());
}
else if (type == 0xFF) // MinKey
{
return(BsonValue.MinValue);
}
else if (type == 0x7F) // MaxKey
{
return(BsonValue.MaxValue);
}
throw new NotSupportedException("BSON type not supported");
}
protected override void ReadContent(ByteReader reader)
{
this.Data = reader.ReadBytes(this.ItemCount);
}
/// <summary>
/// Reads an element (key-value) from an reader
/// </summary>
private BsonValue ReadElement(ByteReader reader, out string name)
{
var type = reader.ReadByte();
name = this.ReadCString(reader);
if (type == 0x01) // Double
{
return reader.ReadDouble();
}
else if (type == 0x02) // String
{
return this.ReadString(reader);
}
else if (type == 0x03) // Document
{
return this.ReadDocument(reader);
}
else if (type == 0x04) // Array
{
return this.ReadArray(reader);
}
else if (type == 0x05) // Binary
{
var length = reader.ReadInt32();
var subType = reader.ReadByte();
var bytes = reader.ReadBytes(length);
switch (subType)
{
case 0x00: return bytes;
case 0x04: return new Guid(bytes);
}
}
else if (type == 0x07) // ObjectId
{
return new ObjectId(reader.ReadBytes(12));
}
else if (type == 0x08) // Boolean
{
return reader.ReadBoolean();
}
else if (type == 0x09) // DateTime
{
var ts = reader.ReadInt64();
// catch specific values for MaxValue / MinValue #19
if (ts == 253402300800000) return DateTime.MaxValue;
if (ts == -62135596800000) return DateTime.MinValue;
return BsonValue.UnixEpoch.AddMilliseconds(ts).ToLocalTime();
}
else if (type == 0x0A) // Null
{
return BsonValue.Null;
}
else if (type == 0x10) // Int32
{
return reader.ReadInt32();
}
else if (type == 0x12) // Int64
{
return reader.ReadInt64();
}
else if (type == 0xFF) // MinKey
{
return BsonValue.MinValue;
}
else if (type == 0x7F) // MaxKey
{
return BsonValue.MaxValue;
}
throw new NotSupportedException("BSON type not supported");
}
private string ReadString(ByteReader reader)
{
var length = reader.ReadInt32();
var bytes = reader.ReadBytes(length - 1);
reader.ReadByte(); // discard \x00
return Encoding.UTF8.GetString(bytes);
}
protected override void ReadContent(ByteReader reader)
{
this.Data = reader.ReadBytes(this.ItemCount);
}
protected override void ReadContent(ByteReader reader)
{
var info = reader.ReadString(HEADER_INFO.Length);
var ver = reader.ReadByte();
if (info != HEADER_INFO) throw LiteException.InvalidDatabase();
if (ver != FILE_VERSION) throw LiteException.InvalidDatabaseVersion(ver);
reader.ReadUInt16(); // to be compatible with old "ChangeID"
this.FreeEmptyPageID = reader.ReadUInt32();
this.LastPageID = reader.ReadUInt32();
this.UserVersion = reader.ReadUInt16();
this.Password = reader.ReadBytes(this.Password.Length);
this.Salt = reader.ReadBytes(this.Salt.Length);
// read page collections references (position on end of page)
var cols = reader.ReadByte();
for (var i = 0; i < cols; i++)
{
this.CollectionPages.Add(reader.ReadString(), reader.ReadUInt32());
}
}
