292 lines
8.8 KiB
Python
292 lines
8.8 KiB
Python
"""
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This takes a MARCXML filename as an argument and converts it into
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MARC records for the unglued edition (in .xml and .mrc formats).
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Consider it a catalogolem: http://commons.wikimedia.org/wiki/File:Arcimboldo_Librarian_Stokholm.jpg
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Use the MARCXML file for the non-unglued edition from Library of Congress.
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"""
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import pymarc
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import logging
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from datetime import datetime
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from StringIO import StringIO
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from django.conf import settings
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from django.core.urlresolvers import reverse
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import regluit.core.cc as cc
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def stub(edition):
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record = pymarc.Record(force_utf8=True)
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now = datetime.now()
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#mostly to identify this record as a stub
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field001 = pymarc.Field(tag='001', data='stb'+now.strftime('%y%m%d%H%M%S'))
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record.add_ordered_field(field001)
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add_stuff(record)
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# fun fun fun 008
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new_field_value= now.strftime('%y%m%d')+'s'
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if edition.publication_date and len(edition.publication_date)>3:
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new_field_value += edition.publication_date[0:4]
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else:
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new_field_value += '||||'
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new_field_value += '||||xx |||||o|||||||||||eng||'
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field008 = pymarc.Field(tag='008', data=new_field_value)
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record.add_ordered_field(field008)
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# add IBSN for if available
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if edition.isbn_13:
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field020 = pymarc.Field(
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tag='020',
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indicators = [' ', ' '],
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subfields = ['a', edition.isbn_13]
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)
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record.add_ordered_field(field020)
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# OCLC number
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if edition.oclc:
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field035 = pymarc.Field(
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tag='035',
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indicators = [' ', ' '],
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subfields = ['a', '(OCoLC)' + edition.oclc]
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)
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record.add_ordered_field(field035)
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# author name
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num_auths = len(edition.authnames())
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if num_auths:
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field100 = pymarc.Field(
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tag='100',
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indicators = ['1', ' '],
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subfields = [
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'a', edition.authnames()[0],
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]
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)
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record.add_ordered_field(field100)
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if num_auths > 1:
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for auth in edition.authnames()[1:]:
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field = pymarc.Field(
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tag='700',
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indicators = ['1', ' '],
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subfields = [
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'a', auth,
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'e', 'joint author.',
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]
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)
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record.add_ordered_field(field)
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# add subfield to 245 indicating format
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field245 = pymarc.Field(
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tag='245',
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indicators = ['1', '0'],
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subfields = [
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'a', edition.title,
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'a', '[electronic resource]',
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]
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)
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record.add_ordered_field(field245)
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# publisher, date
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if edition.publisher:
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field260 = pymarc.Field(
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tag='260',
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indicators = [' ', ' '],
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subfields = [
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'b', edition.publisher,
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]
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)
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if edition.publication_date:
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field260.add_subfield('c', unicode(edition.publication_date))
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record.add_ordered_field(field260)
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if edition.description:
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#add 520 field (description)
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field520 = pymarc.Field(
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tag='520',
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indicators = [' ', ' '],
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subfields = [
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'a', edition.description,
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]
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)
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record.add_ordered_field(field520)
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add_license(record, edition)
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return record
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#load a with minimal change
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def raw(marcfile, edition):
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record = pymarc.parse_xml_to_array(marcfile)[0]
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for field in record:
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if field.tag in ('001', '003', '005', '006', '007', '856') or int( field.tag ) > 900:
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record.remove_field(field)
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add_stuff(record)
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return record
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#load a record from library of Congress
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def from_lc(marcfile, edition):
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# save lccn for later (if there is one) before deleting it
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print_lccn = None
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record = pymarc.parse_xml_to_array(marcfile)[0]
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for lccn in record.get_fields('010'):
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for validlccn in lccn.get_subfields('a'):
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print_lccn = validlccn
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for field in record:
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if field.tag in ('001', '003', '005', '006', '007', '010', '040', '856') or int( field.tag ) > 900:
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record.remove_field(field)
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add_stuff(record)
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field008 = record.get_fields('008')[0]
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record.remove_field(field008)
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old_field_value = field008.value()
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new_field_value = old_field_value[:23] + 'o' + old_field_value[24:]
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field008 = pymarc.Field(tag='008', data=new_field_value)
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record.add_ordered_field(field008)
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# add IBSN for ebook where applicable; relegate print ISBN to $z
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isbn = edition.isbn_13
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try:
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field020 = record.get_fields('020')[0]
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print_isbn = field020.get_subfields('a')[0]
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field020.delete_subfield('a')
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if isbn:
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field020.add_subfield('a', isbn)
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field020.add_subfield('z', print_isbn)
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except IndexError:
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print_isbn = None
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# change 050 and 082 indicators because LOC is no longer responsible for these
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# no easy indicator change function, so we'll just reconstruct the fields
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try:
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field050 = record.get_fields('050')[0]
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field050_new = field050
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field050_new.indicators = [' ', '4']
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record.remove_field(field050)
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record.add_ordered_field(field050_new)
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except:
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pass # if no 050 field, don't need to change indicator
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try:
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field082 = record.get_fields('082')[0]
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field082_new = field082
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field082_new.indicators = [' ', '4']
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record.remove_field(field082)
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record.add_ordered_field(field082_new)
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except:
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pass # if no 082 field, don't need to change indicator
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# add subfield to 245 indicating format
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try:
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field245 = record.get_fields('245')[0]
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field245.add_subfield('a', '[electronic resource]')
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except IndexError:
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pass
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# modify 300 field (physical description)
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try:
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field300 = record.get_fields('300')[0]
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subfield_a = field300.get_subfields('a')[0]
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if (
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subfield_a[-2:] == ' ;' or
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subfield_a[-2:] == ' :' or
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subfield_a[-2:] == ' +'
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):
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subfield_a = subfield_a[:-2]
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new300a = '1 online resource (' + subfield_a + ')'
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if field300.get_subfields('b'):
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new300a += ' :'
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field300.delete_subfield('a')
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field300.add_subfield('a', new300a)
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field300.delete_subfield('c')
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except:
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pass
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add_license(record, edition)
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# add 588 field (source of description) - credit where credit is due
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if print_lccn:
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field588 = pymarc.Field(
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tag='588',
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indicators = [' ', ' '],
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subfields = [
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'a', 'Description based on print version record from the Library of Congress.',
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]
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)
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record.add_ordered_field(field588)
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# add 776 field (related editions) - preserve pISBN, LCCN, OCLCnum
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title = record.get_fields('245')[0].get_subfields('a')[0]
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title = title.split('/')[0]
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subfields = ['i', 'Print version: ','t', title,]
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if print_isbn:
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subfields.extend(['z', print_isbn])
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elif isbn:
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subfields.extend(['z', isbn])
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if print_lccn:
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subfields.extend(['w', '(DLC) ' + print_lccn, ])
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if edition.oclc:
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subfields.extend(['w', '(OCoLC) ' + edition.oclc,])
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field776 = pymarc.Field(
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tag='776',
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indicators = ['0', '8'],
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subfields = subfields
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)
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record.add_ordered_field(field776)
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return record
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def add_license(record, edition):
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if edition.license:
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# add 536 field (funding information)
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field536 = pymarc.Field(
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tag='536',
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indicators = [' ', ' '],
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subfields = [
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'a', edition.funding_info,
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]
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)
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record.add_ordered_field(field536)
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# add 540 field (terms governing use)
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field540 = pymarc.Field(
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tag='540',
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indicators = [' ', ' '],
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subfields = [
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'a', dict(cc.CHOICES)[edition.license],
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'u', dict(cc.GRANTS)[edition.license],
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]
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)
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record.add_ordered_field(field540)
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def add_stuff(record):
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# add field indicating record originator
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field003 = pymarc.Field(tag='003', data='UnglueIt')
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record.add_ordered_field(field003)
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# update timestamp of record
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datestamp = datetime.now().strftime('%Y%m%d%H%M%S') + '.0'
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field005 = pymarc.Field(tag='005', data=datestamp)
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record.add_ordered_field(field005)
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# change 006, 007, 008 because this is an online resource
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field006 = pymarc.Field(
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tag='006',
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data='m o d '
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)
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record.add_ordered_field(field006)
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field007 = pymarc.Field(
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tag='007',
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data='cr'
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)
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record.add_ordered_field(field007)
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