class Calculator

Constants

HALF_LIFE

Public Class Methods

new(time) click to toggle source

# File lib/git_heat/calculator.rb, line 4
def initialize(time)
  @time = time
end

Public Instance Methods

go(stats) click to toggle source

# File lib/git_heat/calculator.rb, line 8
def go(stats)
  heat = {}
  stats.each do |commit|
    next if commit[:time] > @time
    time_delta = @time - commit[:time]
    unless commit[:affected_files]
      next
    end
    commit[:affected_files].each do |file|
      impact = (file[:insertions] + file[:deletions]).to_f
      heat[file[:file]] ||= 0
      heat[file[:file]] += impact*(0.5**(time_delta/HALF_LIFE))
    end
  end
  heat.sort_by {|_key, value| value}.reverse
end