copy.rb

# encoding: utf-8
require 'fileutils'
require 'date'

files = `git ls-files`.split("\n")

files.each do |f|
  next unless f =~ /\.(c|h|cc|ac|am|in)$/
  contents = File.read(f)
  if contents =~ /Copyright[-,\s\d]+Couchbase/
    log = `git log --follow #{f}`.split("\n")
    dates = log.map{|l| l[/Date:\s+(.*)/, 1]}.compact.map{|d| DateTime.parse(d).year}.uniq
    if dates.size > 1
      years = [dates[-1], dates[0]].join("-")
    else
      years = dates[0]
    end
    contents = contents.sub(/Copyright[-,\s\d]+Couchbase/, "Copyright #{years} Couchbase")
    File.open(f, "w+"){|io| io.write(contents)}
  end
end