/// <summary>
/// Reads the contents of the <see cref="EhfaStructure" /> from the specified stream.
/// </summary>
/// <param name="stream">The stream.</param>
/// <exception cref="System.ArgumentNullException">The stream is null.</exception>
/// <exception cref="System.ArgumentException">The stream is invalid.</exception>
public virtual void Read(Stream stream)
{
if (stream == null)
{
throw new ArgumentNullException(nameof(stream), "The stream is null.");
}
try
{
foreach (DictionaryEntry structureItem in _type.Items)
{
IEhfaObject value = null;
IEhfaObjectType item = (IEhfaObjectType)structureItem.Value;
if (item is EhfaPrimitiveType)
{
value = new EhfaObject(item as EhfaPrimitiveType);
value.Read(stream);
_objects.Add((String)structureItem.Key, value);
}
else if (item is EhfaStructureType)
{
if (item.DataPlacement == DataPlacement.Internal)
{
value = new EhfaStructure(item as EhfaStructureType);
value.Read(stream);
_objects.Add((String)structureItem.Key, value);
}
if (item.DataPlacement != DataPlacement.Internal)
{
Byte[] temp = new Byte[4];
stream.Read(temp, 0, 4);
Int32 objectRepeatCount = (Int32)EndianBitConverter.ToUInt32(temp, ByteOrder.LittleEndian);
stream.Read(temp, 0, 4);
UInt32 pointer = EndianBitConverter.ToUInt32(temp, ByteOrder.LittleEndian);
_objectLocations[(String)structureItem.Key] = new List <IEhfaObject>();
if (objectRepeatCount == 0)
{
continue;
}
while (objectRepeatCount-- > 0)
{
value = new EhfaStructure(item as EhfaStructureType);
value.Read(stream);
_objectLocations[(String)structureItem.Key].Add(value as EhfaStructure);
}
}
}
}
}
catch (Exception ex)
{
throw new ArgumentException("The stream is invalid.", nameof(stream), ex);
}
}
/// <summary>
/// Reads the data of the <see cref="EhfaEntry" />.
/// </summary>
/// <param name="stream">The stream.</param>
/// <returns>The structure within the entry.</returns>
public EhfaStructure ReadData(Stream stream)
{
if (Data != null)
{
return(Data);
}
if (DataLocation == 0)
{
return(null);
}
Data = new EhfaStructure(Dictionary[DataType]);
stream.Seek(DataLocation, SeekOrigin.Begin);
Data.Read(stream);
return(Data);
}