#!/usr/bin/env ruby
# Copyright (c) 2017  Luke Shumaker <lukeshu@lukeshu.com>
#
# This work is free.  You can redistribute it and/or modify it under
# the terms of the Do What The Fuck You Want To Public License,
# Version 2, as published by Sam Hocevar.  See the COPYING file for
# more details.

require 'time'

snapshot = ARGV.first.to_i

$stdin.each_line do |line|
	m = /^ (\S+) +(..-\S+-.... ..:..) +([0-9.-]+)(\S+) *$/.match(line)
	raise "Malformed line: #{line}" unless m
	name = m[1]
	datetime = m[2]
	size_numb = m[3]
	size_unit = m[4]

	# The Unicode.org web server switched the timezone of timestamps
	# in May 2004
	if snapshot < 20040500000000
		datetime = Time.parse("#{datetime} +01:00").utc.strftime('%Y-%m-%d %H:%M')
	else
		datetime = Time.parse("#{datetime} +00:00").utc.strftime('%Y-%m-%d %H:%M')
	end

	# discard the size, I guess.  The number of digits precision was
	# inconsistent over the years.
	#puts ("%-22s  %s  %3s%s" % [ name, datetime, size_numb, size_unit ])
	puts ("%-22s  %s" % [ name, datetime ])
end