private TwitchMessage(
string prefix,
string username,
string command,
string[] parameters,
string trailing,
TwitchMessageTags tags
)
{
this.prefix = prefix;
this.username = username;
this.command = command;
this.parameters = parameters;
this.trailing = trailing;
this.tags = tags;
}
public static TwitchMessage Parse(
string rawMessage
)
{
if (string.IsNullOrEmpty(
rawMessage
))
{
return(TwitchMessage.NULL);
}
rawMessage = rawMessage.Trim();
var tags = TwitchMessageTags.EMPTY;
if (rawMessage.StartsWith(
"@"
))
{
int endOfTags = rawMessage.IndexOf(
" "
);
if (endOfTags == -1)
{
Console.WriteLine(
$"[WARN] Parsing error: Couldn't find whitespace after tags: {rawMessage}"
);
return(TwitchMessage.NULL);
}
tags = TwitchMessageTags.parse(
rawMessage.Substring(
1,
endOfTags
)
);
rawMessage = rawMessage.Substring(
endOfTags + 1
);
}
var prefix = "";
var command = "INVALID";
var parameters = new string[0];
var trailing = "";
int endOfPrefix = 0;
int endOfCommand = 0;
// Get prefix if available
if (rawMessage.StartsWith(
":"
))
{
endOfPrefix = rawMessage.IndexOf(
" "
);
if (endOfPrefix == -1)
{
Console.WriteLine(
$"[WARN] Parsing error: Couldn't find whitespace after prefix: {rawMessage}"
);
return(TwitchMessage.NULL);
}
prefix = rawMessage.Substring(
1,
endOfPrefix
);
}
// Find and get trailing if available
// :tmi.twitch.tv CAP * ACK :twitch.tv/tags twitch.tv/commands twitch.tv/membership\r\n
endOfCommand = rawMessage.IndexOf(
":",
endOfPrefix
);
if (endOfCommand == -1)
{
// No trailing, so the command takes up the remaining length
endOfCommand = rawMessage.Length;
}
else
{
trailing = rawMessage.Substring(
endOfCommand + 1,
rawMessage.Length - endOfCommand - 1
);
}
// Get commands and parameters
var commandAndParameter = rawMessage.Substring(
endOfPrefix,
endOfCommand - endOfPrefix
).Trim();
var parts = Regex.Split(
commandAndParameter,
" "
);
if (parts.Length > 1)
{
// Get parameters if available
parameters = new string[parts.Length - 1];
Array.Copy(
parts,
1,
parameters,
0,
parts.Length - 1
);
}
// First part must be command
command = parts[0];
var username = prefix;
int endOfNick = username.IndexOf(
"!"
);
if (endOfNick > -1)
{
username = username.Substring(
0,
endOfNick
);
}
return(new TwitchMessage(
prefix,
username,
command,
parameters,
trailing,
tags
));
}
