Class: Identifiers::ArxivId

Inherits:
Object
  • Object
show all
Defined in:
lib/identifiers/arxiv_id.rb

Class Method Summary collapse

Class Method Details

.extract(str) ⇒ Object 



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# File 'lib/identifiers/arxiv_id.rb', line 3

def self.extract(str)
  extract_pre_2007_arxiv_ids(str) + extract_post_2007_arxiv_ids(str)
end

.extract_post_2007_arxiv_ids(str) ⇒ Object 



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# File 'lib/identifiers/arxiv_id.rb', line 7

def self.extract_post_2007_arxiv_ids(str)
  str
    .scan(%r{(?<=^|\s|/)(?:arXiv:)?\d{4}\.\d{4,5}(?:v\d+)?(?=$|\s)}i)
    .map { |arxiv_id| arxiv_id.sub(/\AarXiv:/i, '') }
end

.extract_pre_2007_arxiv_ids(str) ⇒ Object 



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# File 'lib/identifiers/arxiv_id.rb', line 13

def self.extract_pre_2007_arxiv_ids(str)
  str
    .scan(%r{(?<=^|\s|/)(?:arXiv:)?[a-z-]+(?:\.[A-Z]{2})?/\d{2}(?:0[1-9]|1[012])\d{3}(?:v\d+)?(?=$|\s)}i)
    .map { |arxiv_id| arxiv_id.sub(/\AarXiv:/i, '') }
end