Module: IERS::Parsers::LeapSecond

Defined in:
lib/iers/parsers/leap_second.rb

Defined Under Namespace

Classes: Entry, Metadata, Table

Constant Summary collapse

EXPIRES_ON = 
/File expires on\s+(\d{1,2})\s+([A-Za-z]+)\s+(\d{4})/i
UPDATED_THROUGH = 
/\AUpdated through\s+(.+?)\s*\z/i
COMMENT_PREFIX = 
/\A#+\s*/

Class Method Summary collapse

Class Method Details

.parse(path) ⇒ Table

Returns:



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# File 'lib/iers/parsers/leap_second.rb', line 25

def parse(path)
  path = Pathname(path)

  unless path.exist?
    raise FileNotFoundError.new(
      "File not found: #{path}",
      path: path.to_s
    )
  end

  entries = []
  expires_on = nil
  updated_through = nil

  path.each_line.with_index(1) do |line, line_number|
    stripped = line.scrub.strip
    next if stripped.empty?

    if stripped.start_with?("#")
      comment = stripped.sub(COMMENT_PREFIX, "")
      expires_on ||= parse_expiry(comment)
      updated_through ||= parse_updated_through(comment)
      next
    end

    entries << parse_line(line, path, line_number)
  end

  Table.new(
    entries: entries.freeze,
    metadata: Metadata.new(
      expires_on: expires_on,
      updated_through: updated_through
    )
  )
end