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Contents
require 'ruby-progressbar/calculators/length'
require 'ruby-progressbar/throttle'
class ProgressBar
class Output
DEFAULT_OUTPUT_STREAM = $stdout
attr_accessor :stream
def initialize(options = {})
self.bar = options[:bar]
self.stream = options[:output] || DEFAULT_OUTPUT_STREAM
self.throttle = Throttle.new(options)
self.length_calculator = Calculators::Length.new(
:length => options[:length],
:output => stream
)
end
def self.detect(options = {})
if options[:output].is_a?(Class) && options[:output] <= ProgressBar::Output
options[:output].new(options)
elsif (options[:output] || DEFAULT_OUTPUT_STREAM).tty?
Outputs::Tty.new(options)
else
Outputs::NonTty.new(options)
end
end
def log(string)
clear
stream.puts string
refresh(:force => true) unless bar.stopped?
end
def clear_string
' ' * length_calculator.length
end
def length
length_calculator.length
end
def with_refresh
yield
refresh
end
def refresh(options = {})
throttle.choke(:force_update_if => (bar.stopped? || options[:force])) do
clear if length_calculator.length_changed?
print_and_flush
end
end
protected
attr_accessor :length_calculator,
:throttle,
:bar
private
def print_and_flush
stream.print bar_update_string + eol
stream.flush
end
end
end
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