Class: PennMARC::Format

Inherits:
Helper
  • Object
show all
Defined in:
lib/pennmarc/helpers/format.rb

Overview

Handle parsing out “Format” and “Other Format” values. Special care goes into controlling the format values for faceting.

Constant Summary collapse

ARCHIVE =

These constants represent the set of desired Format values for faceting.

'Archive'
BOOK = 
'Book'
CONFERENCE_EVENT = 
'Conference/Event'
DATAFILE = 
'Datafile'
GOVDOC = 
'Government document'
IMAGE = 
'Image'
JOURNAL_PERIODICAL = 
'Journal/Periodical'
MANUSCRIPT = 
'Manuscript'
MAP_ATLAS = 
'Map/Atlas'
MICROFORMAT = 
'Microformat'
MUSICAL_SCORE = 
'Musical score'
NEWSPAPER = 
'Newspaper'
OTHER = 
'Other'
PROJECTED_GRAPHIC = 
'Projected graphic'
SOUND_RECORDING = 
'Sound recording'
THESIS_DISSERTATION = 
'Thesis/Dissertation'
THREE_D_OBJECT = 
'3D object'
VIDEO = 
'Video'
WEBSITE_DATABASE = 
'Website/Database'
ARCHIVE_LOCATIONS =

Values encoded in MARC that we use to determine “Archive” format

%w[archarch musearch scfreed univarch archivcoll].freeze

Constants included from Util

Util::TRAILING_PUNCTUATIONS_PATTERNS

Class Method Summary collapse

Methods included from Util

#append_relator, #append_trailing, #datafield_and_linked_alternate, #field_defined?, #field_or_its_linked_alternate?, #join_and_squish, #join_subfields, #linked_alternate, #linked_alternate_not_6_or_8, #no_subfield_value_matches?, #prefixed_subject_and_alternate, #relator, #relator_join_separator, #relator_term_subfield, #remove_paren_value_from_subfield_i, #subfield_defined?, #subfield_in?, #subfield_not_in?, #subfield_undefined?, #subfield_value?, #subfield_value_in?, #subfield_value_not_in?, #subfield_values, #subfield_values_for, #substring_after, #substring_before, #translate_relator, #trim_punctuation, #trim_trailing, #trim_trailing!, #valid_subject_genre_source_code?

Class Method Details

.cartographic_show(record) ⇒ Array<String>

Retrieve cartographic reference data for map/atlas formats for display from 255 and 342

Parameters:

  • record (MARC::Record)

Returns:

  • (Array<String>) 


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# File 'lib/pennmarc/helpers/format.rb', line 131

def cartographic_show(record)
  record.fields(%w[255 342]).map { |field|
    join_subfields(field, &subfield_not_in?(%w[6 8]))
  }.uniq
end

.facet(record) ⇒ Array<String>

Note:

ported from get_format

Get Format values for faceting. Format values are determined using complex logic for each possible format value. The primary fields considered in determining Format facet values are:

  1. “Type of Record” and “Bibliographic level” values extracted from the MARC leader.

  2. Location name values and “Classification part” from Alma “enhanced” MARC holding/item information

  3. 007 values, the first 008 value, and the first character form all 006 values (form)

  4. Medium values from 245 ǂh

  5. Media Type values from 337 ǂa

Additional fields are considered for many of the formats. Much of this logic has been moved to private methods to keep this method from becoming too unwieldy.

Parameters:

  • record (MARC::Record)

Returns:

  • (Array<String>) —

    format values for faceting



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# File 'lib/pennmarc/helpers/format.rb', line 76

def facet(record)
  formats = []
  format_code = leader_format(record.leader)
  f007 = record.fields('007').map(&:value)
  f008 = record.fields('008').first&.value || ''
  f006_forms = record.fields('006').map { |field| field.value[0] }
  title_medium = subfield_values_for tag: '245', subfield: :h, record: record
  media_type = subfield_values_for tag: '337', subfield: :a, record: record

  # any of these
  formats << MANUSCRIPT if include_manuscripts?(format_code)
  formats << ARCHIVE if archive?(record)
  formats << MICROFORMAT if micro_or_microform?(call_nums(record), f007, f008, media_type, title_medium)
  formats << THESIS_DISSERTATION if thesis_or_dissertation?(format_code, record)
  formats << CONFERENCE_EVENT if conference_event?(record)
  formats << NEWSPAPER if newspaper?(f008, format_code)
  formats << GOVDOC if government_document?(f008, record, format_code)
  formats << WEBSITE_DATABASE if website_database?(f006_forms, format_code)
  formats << BOOK if book?(format_code, media_type, record)
  formats << MUSICAL_SCORE if musical_score?(format_code)
  formats << MAP_ATLAS if map_atlas?(format_code)
  formats << graphical_media_type(f007) if graphical_media?(format_code)
  formats << SOUND_RECORDING if sound_recording?(format_code)
  formats << IMAGE if image?(format_code)
  formats << DATAFILE if datafile?(format_code)
  formats << JOURNAL_PERIODICAL if journal_periodical?(format_code)
  formats << THREE_D_OBJECT if three_d_object?(format_code)
  formats.concat(curated_format(record))

  formats << OTHER if formats.empty?

  formats.uniq
end

.include_manuscripts?(format_code) ⇒ Boolean

Check if leader format code is either ‘t’, ‘f’, or ‘d’

Parameters:

  • format_code (String)

Returns:

  • (Boolean) 


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# File 'lib/pennmarc/helpers/format.rb', line 140

def include_manuscripts?(format_code)
  format_code.first.in? %w[t f d]
end

.other_show(record) ⇒ Array<String>

TODO:

is 774 an error in the linked field in legacy? i changed to 776 here

Show “Other Format” values from 776 and any 880 linkage.

Parameters:

  • record (MARC::Record)

Returns:

  • (Array<String>) —

    other format values for display



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# File 'lib/pennmarc/helpers/format.rb', line 114

def other_show(record)
  values = record.fields('776').filter_map do |field|
    value = join_subfields(field, &subfield_in?(%w[i a s t o]))
    next if value.blank?

    value
  end
  other_formats = values + linked_alternate(record, '776') do |sf|
    sf.code.in? %w[i a s t o]
  end
  other_formats.uniq
end

.show(record) ⇒ Array<String>

Note:

ported from get_format_display

Get any Format values from 300, 254, 255, 310, 342, 352, 362 or 340 field. based on the source field, different subfields are used.

Parameters:

  • record (MARC::Record)

Returns:

  • (Array<String>) —

    format values for display



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# File 'lib/pennmarc/helpers/format.rb', line 38

def show(record)
  results = record.fields('300').map { |f| join_subfields(f, &subfield_not_in?(%w[3 6 8])) }
  results += record.fields(%w[254 255 310 342 352 362]).map do |f|
    join_subfields(f, &subfield_not_in?(%w[6 8]))
  end
  results += record.fields('340').map { |f| join_subfields(f, &subfield_not_in?(%w[0 2 6 8])) }
  results += record.fields('880').map do |f|
    # skip any 880s associated with non format fields
    next unless subfield_value?(f, '6', /^(254|255|300|310|340|342|352|362)/)

    subfield_to_ignore = if subfield_value?(f, 6, /^300/)
                           %w[3 6 8]
                         elsif subfield_value?(f, 6, /^340/)
                           %w[0 2 6 8]
                         else
                           %w[6 8]
                         end
    join_subfields(f, &subfield_not_in?(subfield_to_ignore))
  end
  results.compact_blank.uniq
end