Capturing text from input

Capturing text from input

• Alan Z

  Hi,

  The below is the sort of command the program recieves:

  :Martinp23!n=martin@host81-159-64-160.range81-159.btcentralplus.com PRIVMSG #wdm
   :!drink orange
  

  Everything before the PRIVMSG varies depending on the sender of the message, and there can be extra text before the !drink. 

  What I would like to do is output text which reuses the "orange" in the example above, and where the output is called by the prescence of !drink in the message (not neccessarily at the end, but after the "PRIVMSG :" (but then agian - it wouldn't be anywhere else).  Ideally, I'd like the program to be able to reuse the "orange lemon" if there were two words, or any number of words more.  I've tried to use an array - but am a bit stuck with that at the moment:

  string input1;

  input1 = inputLine;

  string[] testArray = input1.Split();

  string[] command = new string[1];

  string[] drink = new string[1];

  Array.Copy(testArray, 3, command, 1, 0);

  Array.Copy(testArray, 4, drink, 1, 0);

  I'm not sure what I'm doing wrong here - but this would only work with one word after the !drink - if I could get it to work in the first place, that is.

  Thanks

  
  

• SankaraNarayanan Nagalingam

  Well, first of all, you are looking for a line which ends with :!test, and then want the words after it. Naturally, there isn't going to be any. So, did you want lines which start with that, or the words before it

  Next, we need to know what exactly defines the text you want to keep. All you say is "a word (or more than one word)" Does it go to the end of the line

  string key = ":!test";

  string inputLine = ":!test blahblahblah";

  string restOfLine;

  if (inputLine.StartsWith(key))
  restOfLine = inputLine.Substring(key.Length); // skip characters equal to the length of key.

  
  
  

• FRED COLES

  Hi again

  It turns out that that didn't work - I program now takes a long time to parse the

  Match m=reg.Match ((inputLine = reader.ReadLine()));

  line, and then it reports m.Success as False.

  This is my code for that bit:

  Match m=reg.Match ((inputLine = reader.ReadLine()));

  else if (inputLine.Contains("!serve"))

  {

  Regex reg = new Regex(@":( <Address>[^ ]*) PRIVMSG ([^ ]*) :!( <Code>\w+) ( <Data>.*)$");

  Match m=reg.Match ((inputLine = reader.ReadLine()));

  if (m.Success == true)

  {

  //m.Groups[1]; //user details

  string command = m.Groups[2].ToString(); //command

  string food = m.Groups[3].ToString(); //foodstuff

  if (command == "serve")

  {

  Is there something I've done wrong/need to do Thanks

  
  

• RAS.Goss

  This would seem to be a really good place to use a regex. The pattern ":( <Address>[^ ]*) PRIVMSG ([^ ]*) :!( <Code>\w+) ( <Data>.*)$" given the string in your example would break it down as :

  Address => Martinp23!n=martin@host81-159-64-160.range81-159.btcentralplus.com
  Code => drink
  Data => orange

  
  
  

• kjsteuer

  Hi,

  That worked - thanks! I needed to put an @ at the beginning of the pattern to stop an "Unrecognised escape sequence" error - but aside from that it works well. Thanks.

  Martin

  
  

• A-Style

  Possibly. I'd say you could also use the string trim method and trim off the first 6 characters of the string. I'd first make t the string and then trim it, however.
  
  Personally, I hate regex, and I avoid using it whenever possible. So far, I've found plenty of ways, including trimming and substrings, to avoid using regex and overcomplicating a simple situation.
  
  
  
• Capturing text from input