Deserialize BinaryData and mapping to an object - ios

Question

I have a small project where I have a list with questions (96 questions).
I try to serialize that list of questions into a BinaryData and to save that result in CoreData.
After I want to deserialize that BinaryData from CoreData and to map the values to an object.
The problem is that my serialization I think is working, but the deserialization is not working for some reason.
This line of code is not called when I run the code and I don't know why:
https://github.com/tygruletz/AddTagsForRows/blob/master/PreloadQuestions/Controller/Communication/TTable.swift#L457
To generate a report in CoreData just click Next-> Next-> Finish.
Here is the code for deserialization:
func deStreamBin(stream: InputStream, format: EStreamFormat){
var protocolByte: UInt8 = 0
var columns: UInt16 = 0
var rows: UInt32 = 0
var tableFlag: ETableFlags
//We should scroll through 0's until we find '1' indicating the start of a table
while protocolByte != 0x01 {
protocolByte = deserializeByte(stream: stream)
}
// Header
_ = deserializeUInt32(stream: stream)
columns = deserializeUInt16(stream: stream)
rows = deserializeUInt32(stream: stream)
print("Number of rows in TTable: \(rows)")
tableFlag = ETableFlags(rawValue: UInt(deserializeUInt16(stream: stream))) ?? ETableFlags.none // 0x0001 = Exception, 0x002 = Interrupt
_ = deserializeByte(stream: stream) // Flags (0x01 = Meta, 0x02 = Last Row, 0x00 = The rest)
// Read the Meta Details
var tMeta: [TMeta] = []
for _ in 0..<columns {
guard let type = EMeta(rawValue: deserializeString(stream: stream, length: 1)) else {return}
var name = ""
if format == EStreamFormat.bin1 {
let nameLength = Int(deserializeByte(stream: stream))
name = deserializeString(stream: stream, length: nameLength)
}
else{
// No names for the bin2
}
tMeta.append(TMeta(type: type, name: name))
}
self.tMeta = tMeta
self.flags = tableFlag
for _ in 0..<rows {
let row: TRow = TRow(tMeta: tMeta)
_ = deserializeUInt32(stream: stream) // Row Number
_ = deserializeByte(stream: stream) // Flags (0x01 = Meta, 0x02 = Last Row, 0x00 = The rest)
for i in 0..<tMeta.count {
let m: TMeta = tMeta[i]
switch m.type {
// Integer (Int32)
case EMeta.i:
row.cell[i] = TCell(i: Int(deserializeInt32(stream: stream)))
// Boolean
case EMeta.b:
row.cell[i] = TCell(b: deserializeBoolean(stream: stream))
// String (length as UInt32, followed by array of chars)
case EMeta.s:
let nLenString = Int(deserializeUInt32(stream: stream))
row.cell[i] = TCell(s: deserializeString(stream: stream, length: nLenString))
// DateTime (BCD Array: YY YY MM DD hh mm ss)
case EMeta.t:
row.cell[i] = TCell(date: deserializeDateTime(stream: stream) ?? Date())
// Database Bytes (Length as Int32, followed by array of bytes)
case EMeta.z:
let nLenBytes = Int(deserializeUInt32(stream: stream))
row.cell[i] = TCell(data: deserializeByteArray(stream: stream, lenght: Int32(nLenBytes)))
// Double (IEEE 8-byte double)
case EMeta.d:
row.cell[i] = TCell(d: deserializeDouble(stream: stream))
// Single Byte
case EMeta.u:
row.cell[i] = TCell(b: deserializeByte(stream: stream))
}
}
do {
try add(row: row)
} catch{
print("deStreamBin: Can't add the row in tMeta: \(error)")
}
}
}
Please help me to deserialize my BinaryData to be able to map the values to an object.
Thanks in advance !