System.ByteMatcher.Match C# (CSharp) Method

		public TermInfoStrings Match (char [] buffer, int offset, int length, out int used)
		{
			foreach (byte [] bytes in map.Keys) {
				for (int i = 0; i < bytes.Length && i < length; i++) {
					if ((char) bytes [i] != buffer [offset + i])
						break;

					if (bytes.Length - 1 == i) {
						used = bytes.Length;
						return (TermInfoStrings) map [bytes];
					}
				}
			}

			used = 0;
			return (TermInfoStrings) (-1);
		}
	}

        object GetKeyFromBuffer(bool cooked)
        {
            if (readpos >= writepos)
            {
                return(null);
            }

            int next = buffer [readpos];

            if (!cooked || !rootmap.StartsWith(next))
            {
                readpos++;
                AdjustBuffer();
                return(CreateKeyInfoFromInt(next));
            }

            int             used;
            TermInfoStrings str = rootmap.Match(buffer, readpos, writepos - readpos, out used);

            if ((int)str == -1)
            {
                return(null);
            }

            ConsoleKeyInfo key;

            if (keymap [str] != null)
            {
                key = (ConsoleKeyInfo)keymap [str];
            }
            else
            {
                readpos++;
                AdjustBuffer();
                return(CreateKeyInfoFromInt(next));
            }

            readpos += used;
            AdjustBuffer();
            return(key);
        }