public static byte[] WriteToNDB(WDBSheet sheet)
{
NDBHeader header = new NDBHeader();
header.fieldCount = sheet.FieldCount;
header.lineCount = sheet.LineCount;
int structSize = MarshalUtility.GetStructSize(typeof(NDBHeader));
header.fieldOffset = structSize;
byte[] fieldBytes = GetFieldBytes(sheet, out var lineSize);
header.lineSize = lineSize;
header.lineOffset = structSize + fieldBytes.Length;
byte[] strBytes = GetStringBytes(sheet, out var strOffsetDic);
byte[] lineBytes = GetLineBytes(sheet, strOffsetDic);
header.stringOffset = structSize + fieldBytes.Length + lineBytes.Length;
MemoryStream stream = new MemoryStream();
byte[] headerBytes = MarshalUtility.StructToByte(header, structSize);
stream.Write(headerBytes, 0, headerBytes.Length);
stream.Write(fieldBytes, 0, fieldBytes.Length);
stream.Write(lineBytes, 0, lineBytes.Length);
stream.Write(strBytes, 0, strBytes.Length);
return(stream.ToArray());;
}
private void SetDataInternal(byte[] dataBytes)
{
this.dataBytes = dataBytes;
int headerSize = MarshalUtility.GetStructSize(typeof(NDBHeader));
if (dataBytes == null || dataBytes.Length < headerSize)
{
throw new ArgumentNullException($"The databytes is empty. Name = {Name}");
}
header = MarshalUtility.ByteToStruct <NDBHeader>(dataBytes, 0, headerSize);
fields = new NDBField[header.fieldCount];
int fieldOffset = 0;
int byteOffset = 0;
for (int i = 0; i < header.fieldCount; ++i)
{
NDBField field = NDBByteUtility.ReadField(dataBytes, header.fieldOffset + byteOffset, out int offset);
fields[i] = field;
field.Offset = fieldOffset;
fieldOffset += NDBFieldUtil.GetFieldOffset(field.FieldType);
fieldNameToIndexDic.Add(field.Name, i);
byteOffset += offset;
}
for (int i = 0; i < header.lineCount; ++i)
{
int id = ByteReader.ReadInt(dataBytes, header.lineOffset + header.lineSize * i, out int offset);
dataIDToIndexDic.Add(id, i);
}
}