Module: Plllayer::TimeHelpers

Included in:
Plllayer
Defined in:
lib/plllayer/time_helpers.rb

Instance Method Summary collapse

Instance Method Details

#format_time(milliseconds, options = {}) ⇒ Object

Helper method to format a number of milliseconds as a string like “1:03:56.555”. The only option is :include_milliseconds, true by default. If false, milliseconds won’t be included in the formatted string.

Raises:

  • (ArgumentError) 


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# File 'lib/plllayer/time_helpers.rb', line 6

def format_time(milliseconds, options = {})
  raise ArgumentError, "can't format negative time" if milliseconds < 0

  ms = milliseconds % 1000
  seconds = (milliseconds / 1000) % 60
  minutes = (milliseconds / 60000) % 60
  hours = milliseconds / 3600000

  if ms.zero? || options[:include_milliseconds] == false
    ms_string = ""
  else
    ms_string = ".%03d" % [ms]
  end

  if hours > 0
    "%d:%02d:%02d%s" % [hours, minutes, seconds, ms_string]
  else
    "%d:%02d%s" % [minutes, seconds, ms_string]
  end
end

#parse_time(string) ⇒ Object

Helper method to parse a string like “1:03:56.555” and return the number of milliseconds that time length represents.

Raises:

  • (ArgumentError) 


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# File 'lib/plllayer/time_helpers.rb', line 29

def parse_time(string)
  parts = string.split(":", -1).map(&:to_f)

  raise ArgumentError, "too many parts" if parts.length > 3
  raise ArgumentError, "can't parse negative numbers" if parts.any? { |x| x < 0 }

  parts.unshift(0) until parts.length == 3
  hours, minutes, seconds = parts
  seconds = hours * 3600 + minutes * 60 + seconds
  milliseconds = seconds * 1000
  milliseconds.to_i
end