public void Parse()
{
// number of bytes used for lengthIndicator
int pos = 2; // !!!! Should read param for Length Indicator if inclusive/exclusive and how many bytes and what format
// Parse Header - 5 is the header length (tpdu) we should know from header defintion how many bytes is the header
msgHeader = new isoHeader(requestBuffer.Skip(pos).Take(5).ToArray());
pos += 5;
// get the message type
if (this.fieldList[0].lengthType == LengthType.FIXED)
{
// should be removed - it keeps field data on dialect definition
fieldList[0].setValueBYTE(requestBuffer.Skip(pos).Take(fieldList[0].getLength()).ToArray());
// increase position in message buffer
pos = pos + fieldList[0].getLength();
}
// The bitmap may be transmitted as 8 bytes of binary data or as 16 hexadecimal characters 0-9, A-F in the ASCII
// or EBCDIC character sets.
msgBitmap = new isoBitmap(requestBuffer.Skip(pos).Take(fieldList[1].getLength()).ToArray());
fieldList[1].setValueBYTE(requestBuffer.Skip(pos).Take(fieldList[1].getLength()).ToArray());
pos += fieldList[1].getLength();
// for each bit that exists get its value based on its definition
for (int i = 2; i < this.msgDialect.getTotalFields(); i++)
{
if (msgBitmap.bitIsSet(i))
{
if (fieldList[i].lengthType == LengthType.FIXED)
{
fieldList[i].setValueBYTE(requestBuffer.Skip(pos).Take(fieldList[i].getLength()).ToArray());
pos += fieldList[i].getLength();
}
else if (fieldList[i].lengthType == LengthType.LLVAR && fieldList[i].fieldType == FieldType.Z && fieldList[i].lengthEncoding == EncodingType.BCD)
{
int fieldLength;
Int32.TryParse(ConvHelper.bytes2hex(requestBuffer, 1, pos), out fieldLength);
int padLen = fieldLength % 2;
fieldLength = padLen + (fieldLength / 2);
pos += 1;
fieldList[i].setValueBYTE(requestBuffer.Skip(pos).Take(fieldLength).ToArray());
pos += fieldLength;
}
else if (fieldList[i].lengthType == LengthType.LLVAR && fieldList[i].lengthEncoding == EncodingType.BCD)
{
int fieldLength;
Int32.TryParse(ConvHelper.bytes2hex(requestBuffer, 1, pos), out fieldLength);
pos += 1;
if (fieldList[i].fieldType == FieldType.N)
{
fieldList[i].setValueBYTE(requestBuffer.Skip(pos).Take(fieldLength / 2).ToArray());
pos += fieldLength / 2;
}
else
{
fieldList[i].setValueBYTE(requestBuffer.Skip(pos).Take(fieldLength).ToArray());
pos += fieldLength;
}
}
else if ((fieldList[i].lengthType == LengthType.LLLVAR) && fieldList[i].lengthEncoding == EncodingType.BCD)
{
int fieldLength;
Int32.TryParse(ConvHelper.bytes2hex(requestBuffer, 2, pos), out fieldLength);
pos += 2;
if (fieldList[i].fieldType == FieldType.N)
{
fieldList[i].setValueBYTE(requestBuffer.Skip(pos).Take(fieldLength).ToArray());
pos += fieldLength / 2;
}
else
{
fieldList[i].setValueBYTE(requestBuffer.Skip(pos).Take(fieldLength).ToArray());
pos += fieldLength;
}
}
}
}
}
private List<isoField> fieldList; // iso fields with their values
#endregion Fields
#region Constructors
public isoMessage(byte[] buffer, int bufLen)
{
fieldList = new List<isoField>();
requestBuffer = buffer;
bufLength = bufLen;
msgDialect = new isoDialect(68);
responseBuffer = new byte[] { 0 };
f63v = String.Empty;
msgBitmap = new isoBitmap();
msgHeader = new isoHeader();
// dialect initialized so initialize fields
for (int i = 0; i < msgDialect.getTotalFields(); i++)
{
isoField nIsoField = new isoField();
fieldList.Add(nIsoField);
this.fieldList[i].number = i;
this.fieldList[i].name = msgDialect.fieldList[i].name;
this.fieldList[i].fieldEncoding = msgDialect.fieldList[i].fieldEncoding;
this.fieldList[i].fieldType = msgDialect.fieldList[i].fieldType;
this.fieldList[i].length = msgDialect.fieldList[i].fixedLength;
this.fieldList[i].lengthType = msgDialect.fieldList[i].lengthType;
this.fieldList[i].description = msgDialect.fieldList[i].description;
this.fieldList[i].lengthEncoding = msgDialect.fieldList[i].lengthEncoding;
}
}
