Class: Cocina::Models::Validators::W3cdtfValidator

Inherits:
Object
  • Object
show all
Defined in:
lib/cocina/models/validators/w3cdtf_validator.rb

Overview

Validates w3cdtf date

Constant Summary collapse

REGEX = 
/\A(?<year>\d{4})(?:-(?<month>\d\d)(?:-(?<day>\d\d)(?<time>T\d\d:\d\d(?::\d\d(?:.\d+)?)?(?:Z|[+-]\d\d:\d\d))?)?)?\z/ix

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(date) ⇒ W3cdtfValidator

Returns a new instance of W3cdtfValidator.



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# File 'lib/cocina/models/validators/w3cdtf_validator.rb', line 14

def initialize(date)
  @date = date
end

Class Method Details

.validate(date) ⇒ Object 



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# File 'lib/cocina/models/validators/w3cdtf_validator.rb', line 10

def self.validate(date)
  new(date).validate
end

Instance Method Details

#validate ⇒ Object

The W3CDTF format is defined here: www.w3.org/TR/NOTE-datetime

Year:

YYYY (eg 1997)

Year and month:

YYYY-MM (eg 1997-07)

Complete date:

YYYY-MM-DD (eg 1997-07-16)

Complete date plus hours and minutes:

YYYY-MM-DDThh:mmTZD (eg 1997-07-16T19:20+01:00)

Complete date plus hours, minutes and seconds:

YYYY-MM-DDThh:mm:ssTZD (eg 1997-07-16T19:20:30+01:00)

Complete date plus hours, minutes, seconds and a decimal fraction of a second

YYYY-MM-DDThh:mm:ss.sTZD (eg 1997-07-16T19:20:30.45+01:00)



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# File 'lib/cocina/models/validators/w3cdtf_validator.rb', line 32

def validate
  return false unless (matches = @date.match(REGEX))
  return true unless matches[:month]
  return (1..12).include? matches[:month].to_i unless matches[:day]

  Date.parse(@date)

  true
rescue Date::Error
  false
end