Class: Pubid::UrnGenerator::Base

Inherits:
Object
  • Object
show all
Defined in:
lib/pubid/urn_generator/base.rb

Overview

Base class for all flavor-specific URN generators. Provides template methods for common URN parts. Flavors subclass and override only what differs.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(identifier) ⇒ Base

Returns a new instance of Base.



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# File 'lib/pubid/urn_generator/base.rb', line 11

def initialize(identifier)
  @identifier = identifier
end

Instance Attribute Details

#identifier ⇒ Object (readonly)

Returns the value of attribute identifier.



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# File 'lib/pubid/urn_generator/base.rb', line 9

def identifier
  @identifier
end

Instance Method Details

#generate ⇒ Object 



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# File 'lib/pubid/urn_generator/base.rb', line 15

def generate
  parts = ["urn", urn_namespace]
  parts << urn_publisher if urn_publisher
  parts << urn_type if urn_type
  parts << urn_number if urn_number
  parts << urn_part if urn_part
  parts << urn_subpart if urn_subpart
  parts << urn_year if urn_year
  parts << urn_edition if urn_edition
  parts << urn_language if urn_language
  parts.join(":")
end

#maybe(method_name) ⇒ Object 



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# File 'lib/pubid/urn_generator/base.rb', line 96

def maybe(method_name)
  return nil unless identifier.class.attributes.key?(method_name)

  identifier.public_send(method_name)
end

#urn_edition ⇒ Object 



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# File 'lib/pubid/urn_generator/base.rb', line 79

def urn_edition
  ed = maybe(:edition)
  return nil unless ed

  num = ed.is_a?(Components::Edition) ? ed.number : ed
  return nil unless num

  "ed.#{num}"
end

#urn_language ⇒ Object 



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# File 'lib/pubid/urn_generator/base.rb', line 89

def urn_language
  langs = maybe(:languages)
  return nil unless langs&.any?

  langs.map(&:code).join(",")
end

#urn_namespace ⇒ Object

Template methods — override in subclasses



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# File 'lib/pubid/urn_generator/base.rb', line 30

def urn_namespace
  flavor_name.downcase
end

#urn_number ⇒ Object 



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# File 'lib/pubid/urn_generator/base.rb', line 45

def urn_number
  val = maybe(:number) || maybe(:code)
  return nil unless val

  val.is_a?(Components::Code) ? val.value.to_s : val.to_s
end

#urn_part ⇒ Object 



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# File 'lib/pubid/urn_generator/base.rb', line 52

def urn_part
  val = maybe(:part)
  return nil unless val

  "-#{val.is_a?(Components::Code) ? val.value : val}"
end

#urn_publisher ⇒ Object 



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# File 'lib/pubid/urn_generator/base.rb', line 34

def urn_publisher
  pub = maybe(:publisher)
  return nil unless pub

  pub.to_s.downcase
end

#urn_subpart ⇒ Object 



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# File 'lib/pubid/urn_generator/base.rb', line 59

def urn_subpart
  val = maybe(:subpart)
  return nil unless val

  "-#{val.is_a?(Components::Code) ? val.value : val}"
end

#urn_type ⇒ Object 



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# File 'lib/pubid/urn_generator/base.rb', line 41

def urn_type
  nil
end

#urn_year ⇒ Object 



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# File 'lib/pubid/urn_generator/base.rb', line 66

def urn_year
  date = maybe(:date)
  if date
    year = date.is_a?(Components::Date) ? date.year : date.to_s
    return year.to_s if year
  end
  if maybe(:year)
    return identifier.year.to_s
  end

  nil
end