class Bcat
# Parses HTML until the first displayable body character and provides methods
# for accessing head and body contents.
class HeadParser
attr_accessor :buf
def initialize
@buf = ''
@head = []
@body = nil
@html = nil
end
# Called to parse new data as it arrives.
def feed(data)
if complete?
@body << data
else
@buf << data
parse(@buf)
end
complete?
end
# Truthy once the first displayed character of the body has arrived.
def complete?
!@body.nil?
end
# Determine if the input is HTML. This is nil before the first non-whitespace
# character is received, true if the first non-whitespace character is a
# '<', and false if the first non-whitespace character is something other
# than '<'.
def html?
@html
end
# The head contents without any DOCTYPE, , or tags. This should
# consist of only