(PECL event >= 1.2.6-beta)
EventBuffer::readLine — Extracts a line from the front of the buffer
Extracts a line from the front of the buffer and returns it in a newly
allocated string. If there is not a whole line to read, the function
NULL. The line terminator is not included in the copied string.
One of EventBuffer:EOL_* constants .
On success returns the line read from the buffer, otherwise