class RDoc::Parser::ChangeLog

def parse_date(date)
  case date
  when /\A\s*(\d+)-(\d+)-(\d+)(?:[ T](\d+):(\d+):(\d+) *([-+]\d\d):?(\d\d))?\b/
    Time.new($1, $2, $3, $4, $5, $6, ("#{$7}:#{$8}" if $7))
  when /\A\s*\w{3}, +(\d+) (\w{3}) (\d+) (\d+):(\d+):(\d+) *(?:([-+]\d\d):?(\d\d))\b/
    Time.new($3, $2, $1, $4, $5, $6, ("#{$7}:#{$8}" if $7))
  when /\A\s*\w{3} (\w{3}) +(\d+) (\d+) (\d+):(\d+):(\d+) *(?:([-+]\d\d):?(\d\d))\b/
    Time.new($3, $1, $2, $4, $5, $6, ("#{$7}:#{$8}" if $7))
  when /\A\s*\w{3} (\w{3}) +(\d+) (\d+):(\d+):(\d+) (\d+)\b/
    Time.new($6, $1, $2, $3, $4, $5)
  else
    raise ArgumentError, "bad date: #{date}"
  end
end