public override int Deserialize(string rawTlv, int pos)
{
if (rawTlv.Length == 0)
{
return(0);
}
children = new QRDEList();
Tag = (TagId)GetEnum(typeof(TagId), Convert.ToInt16(rawTlv.Substring(pos, 2)));
pos = pos + 2;
Length = Convert.ToInt16(rawTlv.Substring(pos, 2));
pos = pos + 2;
Value = rawTlv.Substring(pos, Length);
pos = pos + Length;
IsTemplate = QRMetaDataSourceSingleton.Instance.DataSource.IsTemplate(Tag, TagParent);
//DataFormatterBase formatter = QRMetaDataSourceSingleton.Instance.DataSource.GetFormatter(Tag, TagParent);
if (IsTemplate)
{
for (int i = 0; i < Value.Length;)
{
QRDE child = new QRDE
{
TagParent = Tag
};
i = child.Deserialize(Value, i);
Children.AddToList(child);
}
}
return(pos);
}
private void AddTTL(EMVTagMeta tag, KernelDatabaseBase database)
{
if (database.IsNotEmpty(tag.Tag))
{
Children.AddToList(TLV.Create(tag.Tag, database.Get(tag).Value));
}
}
public override int Deserialize(byte[] rawTlv, int pos)
{
if (rawTlv.Length == 0)
{
return(0);
}
children = new TLVList();
//some byte streams may have FF padding between tags ??
while (rawTlv[pos] == 0xFF)
{
pos++;
}
Tag = new T();
pos = Tag.Deserialize(rawTlv, pos);
Val = new V(TLVMetaDataSourceSingleton.Instance.DataSource.GetFormatter(Tag.TagLable));
pos = Val.Deserialize(rawTlv, pos);
if (Tag.IsConstructed)
{
for (int i = 0; i < Value.Length;)
{
TLV child = new TLV();
i = child.Deserialize(Value, i);
//TODO: Dont like this...had to change AddToList to allow duplicates, previously if a item in the list already existed its
//value was replaced, some cards may return blocks of 0x00 bytes
//in their read record byte streams, this is not valid TLV but we have to cater for it
//the TLV class sees a tag of 00 with length of 00 and so on, we add the 00 tags and allow duplicates so that when things
//like static data for authentication is calcaulted the dups are serialized back into the origional
//blocks of 0x00, since the card has included this invalid data in its signature!!
//this should change, probably include the 0x00 blocks as some sort of custom padding tag, and switch dups back off?
Children.AddToList(child, true);
}
}
return(pos);
}
