asciinema.org/app/models/stdout.rb

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class Stdout
include Enumerable
attr_reader :data, :timing
def initialize(data, timing)
@data = data
@timing = timing
end
def each
offset = 0
timing.each do |line|
delay, size = line
yield(delay, bytes[offset...offset+size])
offset += size
end
end
def bytes_until(seconds)
bytes = []
time = 0
each do |delay, frame_bytes|
time += delay
break if time > seconds
bytes.concat(frame_bytes)
end
bytes
end
private
def bytes
@bytes ||= data.bytes
end
end