public IRCMessage(byte[] msg)
{
Time = DateTime.UtcNow;
Raw = Encoding.UTF8.GetString(msg);
RawTrimmed = Encoding.UTF8.GetString(msg).Trim();
Parsed = false;
Prefix = string.Empty;
Server = string.Empty;
Nick = string.Empty;
User = string.Empty;
Host = string.Empty;
Command = string.Empty;
RawParameters = string.Empty;
Parameters = new string[0];
#region Actual Parsing
if (RawTrimmed.Length > 0)
{
var subIdx = 0; // If we find a prefix, we shift this value to the end of the prefix
// Prefix Section
#region Prefix Parsing (Optional in Message Format)
if (RawTrimmed.StartsWith(':') || RawTrimmed.Contains('!') || RawTrimmed.Contains('@')) // Contains prefix if the 1st char is :
{ // (Sometimes twitch replies without the ':' in which case we search for other giveaways that it is a prefix e.g. '!' / '@')
// [':' <prefix> <SPACE> ]
// < prefix > ::= < servername > | < nick > ['!' < user > ]['@' < host > ]
subIdx = RawTrimmed.IndexOf(' '); // searches for the <SPACE>
if (RawTrimmed.StartsWith(':'))
{
Prefix = RawTrimmed.Substring(1, subIdx - 1); // Omit ':' and ' '
}
else
{
Prefix = RawTrimmed.Substring(0, subIdx); // In the event we detect a prefix without the :
}
var excIdx = Prefix.IndexOf('!'); // Finds '!'
var atIdx = Prefix.IndexOf('@'); // Finds '@', use this info to determine if its a nickname or servername (?, unsure about this)
if (excIdx == -1 && atIdx == -1)
{
Server = Prefix;
Nick = string.Empty;
}
else
{
if (atIdx != -1)
{
Host = Prefix.Substring(atIdx);
}
else
{
Host = string.Empty;
}
if (excIdx != -1)
{
if (atIdx != -1) // We need to calculate the length of the User section based of the position of the '@'
{
User = Prefix.Substring(excIdx, (Prefix.Length - excIdx) - Host.Length);
}
else
{
User = Prefix.Substring(excIdx);
}
}
Server = string.Empty;
Nick = Prefix.Substring(0, Prefix.Length - User.Length - Host.Length);
}
}
#endregion
// Commands Section
#region Command Parsing
{
// < command > ::= < letter > { < letter > } | < number > < number > < number >
if (subIdx != 0)
{
Command = RawTrimmed.Substring(subIdx + 1);
}
else
{
Command = RawTrimmed.Substring(subIdx);
}
var cmdIndex = Command.IndexOf(' ');
if (cmdIndex == -1)
{
return; // Invalid Message, cant be parsed.
}
// TODO: Log it to see why
Command = Command.Substring(0, cmdIndex); // <command> <params> (<params> starts with <SPACE>)
IsNumericReply = false;
char startChar = (char)Command.ToCharArray().GetValue(0);
if (startChar >= 0x30 && startChar <= 0x39) // Between 0 - 9
{
// Number Code
var num = 0;
if (int.TryParse(Command, out num))
{
IRCReply = (IRCReply)num;
IsNumericReply = true;
}
}
}
#endregion
// RawParameters Section
#region RawParameters Parsing
{
// <params> ::= <SPACE> [ ':' <trailing> | <middle> <params> ]
if (subIdx == 0)
{
// No prefix detected,
subIdx = RawTrimmed.IndexOf(' ');
RawParameters = RawTrimmed.Substring(subIdx + 1);
}
else
{
// We detected a prefix, so there is already a SPACE, find the next one
subIdx = RawTrimmed.IndexOf(' ', subIdx + 1);
RawParameters = RawTrimmed.Substring(subIdx + 1);
}
var paramsList = new List <string>();
var paramsChar = RawParameters.ToCharArray();
for (int i = 0; i < paramsChar.Length; i++)
{
var ch = paramsChar[i];
if (ch == ':') //[':' < trailing > | ... ]
{
paramsList.Add(new string(paramsChar.Skip(i).Take(paramsChar.Length - i).ToArray()));
break; // Last parameter
}
else // [ ... | < middle > <params> ]
{
var nextSpace = RawParameters.IndexOf(' ', i);
if (nextSpace == -1)
{
paramsList.Add(new string(paramsChar.ToArray()));
break; // There are no more parameters twitch lied to us (where was the ':' :( )
}
else
{
paramsList.Add(new string(paramsChar.Skip(i).Take(nextSpace - i).ToArray()));
i = nextSpace;
}
}
}
Parameters = paramsList.ToArray();
}
#endregion
Parsed = true;
}
else
{
// Empty message
Prefix = string.Empty;
Server = string.Empty;
Nick = string.Empty;
User = string.Empty;
Host = string.Empty;
Command = string.Empty;
RawParameters = string.Empty;
Parameters = new string[0];
}
#endregion
}