MSGCommandParser.cs :  » Network-Clients » MSNP-Helper-API » MSNP » CommandParsers » C# / CSharp Open Source

using System;
using System.Collections;
using MSNP;

namespace MSNP.CommandParsers{
  /// <summary>
  /// Summary description for MSGCommandParser.
  /// </summary>
  internal class MSGCommandParser : ICommandParser
  {
    protected internal MSGCommandParser() {}

    public Response ParseResponse(string rawResponse)
    {
      string    curCommand;      
      string    curParameters;
      string    curName;
      string    curFriendlyName;
      string    curLength;
      Hashtable  curMsgHeaders = new Hashtable();
      string    curMessage = "";

      string[] allParts = rawResponse.Split(new char[] {' '}, 2);
  
      int curPart = 0;

      if( allParts.Length > 0 )
      {
        curCommand = allParts[curPart++];
        curParameters = allParts[curPart++];

        string[] paramParts = curParameters.Split(new char[] {' ','\n'}, 4);

        if( paramParts.Length > 0 )
        {
          curPart = 0;
          curName = paramParts[curPart++];
          curFriendlyName = paramParts[curPart++];
          curLength = paramParts[curPart++].Trim();
          
          string headerAndMessage = paramParts[curPart++];

          // Find the header/message seperator: \r\n\r\n
          int seperator = headerAndMessage.IndexOf("\r\n\r\n");

          if( seperator == -1 )
            throw new Exception("Invalid message syntax: " + rawResponse);

          string[] headerParts = headerAndMessage.Substring(0, seperator).Split(new char[] {'\n'});
          curMessage = headerAndMessage.Substring(seperator + 4).TrimEnd(new char[]{'\r','\n'});
          
          for(int i = 0; i < headerParts.Length; i++)
          {
            string[] parts = headerParts[i].Trim().Split(new char[]{':'},2);
            curMsgHeaders.Add(parts[0].Trim(), parts[1].Trim());
          }
        }
        else
          throw new Exception("Invalid message from server: " + rawResponse);

        return new Response(curCommand, -1, new string[] { curName, curFriendlyName, curLength }, curMsgHeaders, curMessage);
      }
      else
        throw new Exception("Invalid response from server: " + rawResponse);
    }

  }
}