Class: Pubid::Iala::UrnParser

Inherits:
UrnParser::Base show all
Defined in:
lib/pubid/iala/urn_parser.rb

Overview

Parses IALA MRN URNs back into identifiers.

UrnGenerator emits:

urn:mrn:iala:pub:<type-lower><number>[:ed<edition>][:<lang-lower>]

Examples:

urn:mrn:iala:pub:s1070:ed2.0          → IALA S1070 Ed 2.0
urn:mrn:iala:pub:r1016:ed2.0:f        → IALA R1016 Ed 2.0 (F)
urn:mrn:iala:pub:c0103-1              → IALA C0103-1

Constant Summary collapse

PREFIX = 
"urn:mrn:iala:pub:".freeze

Instance Method Summary collapse

Methods inherited from UrnParser::Base

parse

Instance Method Details

#parse_urn(urn) ⇒ Object 



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# File 'lib/pubid/iala/urn_parser.rb', line 17

def parse_urn(urn)
  body = strip_namespace(urn)
  parts = split_parts(body)
  code = parts.fetch(0)

  edition = nil
  language = nil
  parts.drop(1).each do |seg|
    if seg.start_with?("ed")
      edition = seg.sub(/\Aed/, "")
    elsif seg.length == 1 && seg.match?(/\A[a-z]\z/i)
      language = seg.upcase
    end
  end

  text = "IALA #{code.upcase}"
  text += " Ed #{edition}" if edition
  text += " (#{language})" if language
  flavor_parse(text)
end