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Contents
module BerkeleyLibrary
module TIND
module Export
module Filter
DO_NOT_EXPORT_FIELDS = ['005', '8564 ', '902 ', '903 ', '991', '998'].map(&:freeze).freeze
DO_NOT_EDIT_FIELDS = (['001'.freeze] + DO_NOT_EXPORT_FIELDS).freeze
DO_NOT_EXPORT_SUBFIELDS = ['336 a', '852 c', '901 a', '901 f', '901 g', '980 a', '982 a', '982 b', '982 p'].map(&:freeze).freeze
DO_NOT_EDIT_SUBFIELDS = (['035 a'.freeze] + DO_NOT_EXPORT_SUBFIELDS).freeze
DO_NOT_EDIT = (DO_NOT_EDIT_FIELDS + DO_NOT_EDIT_SUBFIELDS).freeze
class << self
def can_export_tag?(tag)
!DO_NOT_EXPORT_FIELDS.include?(tag)
end
def can_export_data_field?(df)
!exportable_subfield_codes(df).empty?
end
def exportable_subfield_codes(df)
tag, ind1, ind2 = decompose_data_field(df)
DO_NOT_EXPORT_FIELDS.each { |f| return [] if excludes?(f, tag, ind1, ind2) }
df.subfield_codes.reject do |code|
DO_NOT_EXPORT_SUBFIELDS.any? { |f| excludes?(f, tag, ind1, ind2, code) }
end
end
def can_edit?(tag, ind1, ind2, code)
DO_NOT_EDIT.none? { |f| excludes?(f, tag, ind1, ind2, code) }
end
private
def decompose_data_field(df)
[df.tag, df.indicator1, df.indicator2]
end
# TODO: test this more carefully
def excludes?(f, tag, ind1, ind2, code = nil)
return f == tag if f.size == 3
excludes_tag = f.start_with?(tag) && f[3] == ind1 && f[4] == ind2
code ? excludes_tag && code : excludes_tag
end
end
end
end
end
end
Version data entries
10 entries across 10 versions & 1 rubygems