def setUp(self):
self.field = Field(
tag = '245',
indicators = [ 0, 1 ],
subfields = [
'a', 'Huckleberry Finn: ',
'b', 'An American Odyssey'
]
)
self.controlfield = Field(
tag = '008',
data = '831227m19799999nyu ||| | ger '
)
self.subjectfield = Field(
tag = '650',
indicators = [' ', '0'],
subfields = [
'a', 'Python (Computer program language)',
'v', 'Poetry.'
]
)
class FieldTest(unittest.TestCase):
def setUp(self):
self.field = Field(
tag="245",
indicators=[0, 1],
subfields=["a", "Huckleberry Finn: ", "b", "An American Odyssey"],
)
self.controlfield = Field(
tag="008", data="831227m19799999nyu ||| | ger ")
self.subjectfield = Field(
tag="650",
indicators=[" ", "0"],
subfields=[
"a", "Python (Computer program language)", "v", "Poetry."
],
)
def test_string(self):
self.assertEqual(str(self.field),
"=245 01$aHuckleberry Finn: $bAn American Odyssey")
def test_controlfield_string(self):
self.assertEqual(str(self.controlfield),
r"=008 831227m19799999nyu\\\\\\\\\\\|||\|\ger\\")
def test_indicators(self):
self.assertEqual(self.field.indicator1, "0")
self.assertEqual(self.field.indicator2, "1")
def test_subfields_created(self):
subfields = self.field.subfields
self.assertEqual(len(subfields), 4)
def test_subfield_short(self):
self.assertEqual(self.field["a"], "Huckleberry Finn: ")
self.assertEqual(self.field["z"], None)
def test_subfields(self):
self.assertEqual(self.field.get_subfields("a"), ["Huckleberry Finn: "])
self.assertEqual(self.subjectfield.get_subfields("a"),
["Python (Computer program language)"])
def test_subfields_multi(self):
self.assertEqual(
self.field.get_subfields("a", "b"),
["Huckleberry Finn: ", "An American Odyssey"],
)
self.assertEqual(
self.subjectfield.get_subfields("a", "v"),
["Python (Computer program language)", "Poetry."],
)
def test_encode(self):
self.field.as_marc(encoding="utf-8")
def test_membership(self):
self.assertTrue("a" in self.field)
self.assertFalse("zzz" in self.field)
def test_iterator(self):
string = ""
for subfield in self.field:
string += subfield[0]
string += subfield[1]
self.assertEqual(string, "aHuckleberry Finn: bAn American Odyssey")
def test_value(self):
self.assertEqual(self.field.value(),
"Huckleberry Finn: An American Odyssey")
self.assertEqual(self.controlfield.value(),
"831227m19799999nyu ||| | ger ")
def test_non_integer_tag(self):
# make sure this doesn't throw an exception
Field(tag="3 0", indicators=[0, 1], subfields=["a", "foo"])
def test_add_subfield(self):
field = Field(tag="245", indicators=[0, 1], subfields=["a", "foo"])
field.add_subfield("a", "bar")
self.assertEqual(field.__str__(), "=245 01$afoo$abar")
field.add_subfield("b", "baz", 0)
self.assertEqual(field.__str__(), "=245 01$bbaz$afoo$abar")
field.add_subfield("c", "qux", 2)
self.assertEqual(field.__str__(), "=245 01$bbaz$afoo$cqux$abar")
field.add_subfield("z", "wat", 8)
self.assertEqual(field.__str__(), "=245 01$bbaz$afoo$cqux$abar$zwat")
def test_delete_subfield(self):
field = Field(
tag="200",
indicators=[0, 1],
subfields=["a", "My Title", "a", "Kinda Bogus Anyhow"],
)
self.assertEqual(field.delete_subfield("z"), None)
self.assertEqual(field.delete_subfield("a"), "My Title")
self.assertEqual(field.delete_subfield("a"), "Kinda Bogus Anyhow")
self.assertTrue(len(field.subfields) == 0)
def test_is_subject_field(self):
self.assertEqual(self.subjectfield.is_subject_field(), True)
self.assertEqual(self.field.is_subject_field(), False)
def test_format_field(self):
self.subjectfield.add_subfield("6", "880-4")
self.assertEqual(
self.subjectfield.format_field(),
"Python (Computer program language) -- Poetry.",
)
self.field.add_subfield("6", "880-1")
self.assertEqual(self.field.format_field(),
"Huckleberry Finn: An American Odyssey")
def test_tag_normalize(self):
f = Field(tag="42", indicators=["", ""])
self.assertEqual(f.tag, "042")
def test_alphatag(self):
f = Field(tag="CAT", indicators=[0, 1], subfields=["a", "foo"])
self.assertEqual(f.tag, "CAT")
self.assertEqual(f["a"], "foo")
self.assertEqual(f.is_control_field(), False)
def test_setitem_no_key(self):
try:
self.field["h"] = "error"
except KeyError:
pass
except Exception:
e = sys.exc_info()[1]
self.fail("Unexpected exception thrown: %s" % e)
else:
self.fail("KeyError not thrown")
def test_setitem_repeated_key(self):
try:
self.field.add_subfield("a", "bar")
self.field["a"] = "error"
except KeyError:
pass
except Exception:
e = sys.exc_info()[1]
self.fail("Unexpected exception thrown: %s" % e)
else:
self.fail("KeyError not thrown")
def test_iter_over_controlfield(self):
try:
[subfield for subfield in self.controlfield]
except AttributeError as e:
self.fail("Error during iteration: %s" % e)
def test_setitem(self):
self.field["a"] = "changed"
self.assertEqual(self.field["a"], "changed")
def test_delete_subfield_only_by_code(self):
self.field.delete_subfield("An American Odyssey")
self.assertEqual(self.field["b"], "An American Odyssey")
self.field.delete_subfield("b")
self.assertTrue(self.field["b"] is None)
def test_set_indicators_affects_str(self):
self.field.indicators[0] = "9"
self.field.indicator2 = "9"
self.assertEqual(str(self.field),
"=245 99$aHuckleberry Finn: $bAn American Odyssey")
def test_set_indicators_affects_marc(self):
self.field.indicators[0] = "9"
self.field.indicator2 = "9"
self.assertEqual(
self.field.as_marc("utf-8"),
b"99\x1faHuckleberry Finn: \x1fbAn American Odyssey\x1e",
)
def test_add_subfield(self):
field = Field(tag="245", indicators=[0, 1], subfields=["a", "foo"])
field.add_subfield("a", "bar")
self.assertEqual(field.__str__(), "=245 01$afoo$abar")
field.add_subfield("b", "baz", 0)
self.assertEqual(field.__str__(), "=245 01$bbaz$afoo$abar")
field.add_subfield("c", "qux", 2)
self.assertEqual(field.__str__(), "=245 01$bbaz$afoo$cqux$abar")
field.add_subfield("z", "wat", 8)
self.assertEqual(field.__str__(), "=245 01$bbaz$afoo$cqux$abar$zwat")
def decode_marc(self,
marc,
to_unicode=True,
force_utf8=False,
hide_utf8_warnings=False,
utf8_handling='strict',
encoding='iso8859-1'):
"""
decode_marc() accepts a MARC record in transmission format as a
a string argument, and will populate the object based on the data
found. The Record constructor actually uses decode_marc() behind
the scenes when you pass in a chunk of MARC data to it.
"""
# extract record leader
self.leader = marc[0:LEADER_LEN].decode('ascii')
if len(self.leader) != LEADER_LEN:
raise RecordLeaderInvalid
if self.leader[9] == 'a' or self.force_utf8:
encoding = 'utf-8'
# extract the byte offset where the record data starts
base_address = int(marc[12:17])
if base_address <= 0:
raise BaseAddressNotFound
if base_address >= len(marc):
raise BaseAddressInvalid
# extract directory, base_address-1 is used since the
# director ends with an END_OF_FIELD byte
directory = marc[LEADER_LEN:base_address - 1].decode('ascii')
# determine the number of fields in record
if len(directory) % DIRECTORY_ENTRY_LEN != 0:
raise RecordDirectoryInvalid
field_total = len(directory) / DIRECTORY_ENTRY_LEN
# add fields to our record using directory offsets
field_count = 0
while field_count < field_total:
entry_start = field_count * DIRECTORY_ENTRY_LEN
entry_end = entry_start + DIRECTORY_ENTRY_LEN
entry = directory[entry_start:entry_end]
entry_tag = entry[0:3]
entry_length = int(entry[3:7])
entry_offset = int(entry[7:12])
entry_data = marc[base_address + entry_offset:base_address +
entry_offset + entry_length - 1]
# assume controlfields are numeric; replicates ruby-marc behavior
if entry_tag < '010' and entry_tag.isdigit():
if to_unicode:
field = Field(tag=entry_tag,
data=entry_data.decode(encoding))
else:
field = RawField(tag=entry_tag, data=entry_data)
else:
subfields = list()
subs = entry_data.split(SUBFIELD_INDICATOR.encode('ascii'))
# The MARC spec requires there to be two indicators in a
# field. However experience in the wild has shown that
# indicators are sometimes missing, and sometimes there
# are too many. Rather than throwing an exception because
# we can't find what we want and rejecting the field, or
# barfing on the whole record we'll try to use what we can
# find. This means missing indicators will be recorded as
# blank spaces, and any more than 2 are dropped on the floor.
first_indicator = second_indicator = ' '
subs[0] = subs[0].decode('ascii')
if len(subs[0]) == 0:
logging.warning("missing indicators: %s", entry_data)
first_indicator = second_indicator = ' '
elif len(subs[0]) == 1:
logging.warning("only 1 indicator found: %s", entry_data)
first_indicator = subs[0][0]
second_indicator = ' '
elif len(subs[0]) > 2:
logging.warning("more than 2 indicators found: %s",
entry_data)
first_indicator = subs[0][0]
second_indicator = subs[0][1]
else:
first_indicator = subs[0][0]
second_indicator = subs[0][1]
for subfield in subs[1:]:
if len(subfield) == 0:
continue
code = subfield[0:1].decode('ascii')
data = subfield[1:]
if to_unicode:
if self.leader[9] == 'a' or force_utf8:
data = data.decode('utf-8', utf8_handling)
elif encoding == 'iso8859-1':
data = marc8_to_unicode(data, hide_utf8_warnings)
else:
data = data.decode(encoding)
subfields.append(code)
subfields.append(data)
if to_unicode:
field = Field(
tag=entry_tag,
indicators=[first_indicator, second_indicator],
subfields=subfields,
)
else:
field = RawField(
tag=entry_tag,
indicators=[first_indicator, second_indicator],
subfields=subfields,
)
self.add_field(field)
field_count += 1
if field_count == 0:
raise NoFieldsFound
def test_delete_subfield(self):
field = Field(tag='200', indicators=[0,1], subfields=['a','My Title', 'a', 'Kinda Bogus Anyhow'])
self.assertEqual(field.delete_subfield('z'), None)
self.assertEqual(field.delete_subfield('a'), 'My Title')
self.assertEqual(field.delete_subfield('a'), 'Kinda Bogus Anyhow')
self.assertTrue(len(field.subfields) == 0)
def test_add_subfield(self):
field = Field(tag='245', indicators=[0, 1], subfields=['a', 'foo'])
field.add_subfield('a','bar')
self.assertEquals(field.__str__(), '=245 01$afoo$abar')
class FieldTest(unittest.TestCase):
def setUp(self):
self.field = Field(
tag = '245',
indicators = [ 0, 1 ],
subfields = [
'a', 'Huckleberry Finn: ',
'b', 'An American Odyssey'
]
)
self.controlfield = Field(
tag = '008',
data = '831227m19799999nyu ||| | ger '
)
self.subjectfield = Field(
tag = '650',
indicators = [' ', '0'],
subfields = [
'a', 'Python (Computer program language)',
'v', 'Poetry.'
]
)
def test_string(self):
self.assertEquals(str(self.field),
'=245 01$aHuckleberry Finn: $bAn American Odyssey')
def test_controlfield_string(self):
self.assertEquals(str(self.controlfield),
r'=008 831227m19799999nyu\\\\\\\\\\\|||\|\ger\\')
def test_indicators(self):
assert self.field.indicator1 is 0
self.assertEqual(self.field.indicator2, 1)
def test_subfields_created(self):
subfields = self.field.subfields
self.assertEqual(len(subfields), 4)
def test_subfield_short(self):
self.assertEqual(self.field['a'], 'Huckleberry Finn: ')
self.assertEqual(self.field['z'], None)
def test_subfields(self):
self.assertEqual(self.field.get_subfields('a'),
['Huckleberry Finn: '])
self.assertEqual(self.subjectfield.get_subfields('a'),
['Python (Computer program language)'])
def test_subfields_multi(self):
self.assertEqual(self.field.get_subfields('a','b'),
['Huckleberry Finn: ', 'An American Odyssey' ])
self.assertEqual(self.subjectfield.get_subfields('a','v'),
['Python (Computer program language)', 'Poetry.' ])
def test_encode(self):
self.field.as_marc()
def test_iterator(self):
string = ""
for subfield in self.field:
string += subfield[0]
string += subfield[1]
self.assertEquals(string, 'aHuckleberry Finn: bAn American Odyssey')
def test_value(self):
self.assertEquals(self.field.value(),
'Huckleberry Finn: An American Odyssey')
self.assertEquals(self.controlfield.value(),
'831227m19799999nyu ||| | ger ')
def test_non_integer_tag(self):
# make sure this doesn't throw an exception
field = Field(tag='3 0', indicators=[0, 1], subfields=['a', 'foo'])
def test_add_subfield(self):
field = Field(tag='245', indicators=[0, 1], subfields=['a', 'foo'])
field.add_subfield('a','bar')
self.assertEquals(field.__str__(), '=245 01$afoo$abar')
def test_delete_subfield(self):
field = Field(tag='200', indicators=[0,1], subfields=['a','My Title', 'a', 'Kinda Bogus Anyhow'])
self.assertEquals(field.delete_subfield('z'), None)
self.assertEquals(field.delete_subfield('a'), 'My Title')
self.assertEquals(field.delete_subfield('a'), 'Kinda Bogus Anyhow')
self.assertTrue(len(field.subfields) == 0)
def test_is_subject_field(self):
self.assertEqual(self.subjectfield.is_subject_field(), True)
self.assertEqual(self.field.is_subject_field(), False)
def test_format_field(self):
self.assertEqual(self.subjectfield.format_field(),
'Python (Computer program language) -- Poetry.')
self.assertEqual(self.field.format_field(),
'Huckleberry Finn: An American Odyssey')
def test_tag_normalize(self):
f = Field(tag='42', indicators=['', ''])
self.assertEqual(f.tag, '042')
def test_alphatag(self):
f = Field(tag='CAT', indicators=[0, 1], subfields=['a', 'foo'])
self.assertEqual(f.tag, 'CAT')
self.assertEqual(f['a'], 'foo')
self.assertEqual(f.is_control_field(), False)
def test_non_integer_tag(self):
# make sure this doesn't throw an exception
Field(tag="3 0", indicators=[0, 1], subfields=["a", "foo"])
class FieldTest(unittest.TestCase):
def setUp(self):
self.field = Field(
tag='245',
indicators=[0, 1],
subfields=['a', 'Huckleberry Finn: ', 'b', 'An American Odyssey'])
self.controlfield = Field(
tag='008', data='831227m19799999nyu ||| | ger ')
self.subjectfield = Field(tag='650',
indicators=[' ', '0'],
subfields=[
'a',
'Python (Computer program language)',
'v', 'Poetry.'
])
def test_string(self):
self.assertEqual(str(self.field),
'=245 01$aHuckleberry Finn: $bAn American Odyssey')
def test_controlfield_string(self):
self.assertEqual(str(self.controlfield),
r'=008 831227m19799999nyu\\\\\\\\\\\|||\|\ger\\')
def test_indicators(self):
self.assertEqual(self.field.indicator1, '0')
self.assertEqual(self.field.indicator2, '1')
def test_subfields_created(self):
subfields = self.field.subfields
self.assertEqual(len(subfields), 4)
def test_subfield_short(self):
self.assertEqual(self.field['a'], 'Huckleberry Finn: ')
self.assertEqual(self.field['z'], None)
def test_subfields(self):
self.assertEqual(self.field.get_subfields('a'), ['Huckleberry Finn: '])
self.assertEqual(self.subjectfield.get_subfields('a'),
['Python (Computer program language)'])
def test_subfields_multi(self):
self.assertEqual(self.field.get_subfields('a', 'b'),
['Huckleberry Finn: ', 'An American Odyssey'])
self.assertEqual(self.subjectfield.get_subfields('a', 'v'),
['Python (Computer program language)', 'Poetry.'])
def test_encode(self):
self.field.as_marc(encoding='utf-8')
def test_membership(self):
self.assertTrue('a' in self.field)
self.assertFalse('zzz' in self.field)
def test_iterator(self):
string = ""
for subfield in self.field:
string += subfield[0]
string += subfield[1]
self.assertEqual(string, 'aHuckleberry Finn: bAn American Odyssey')
def test_value(self):
self.assertEqual(self.field.value(),
'Huckleberry Finn: An American Odyssey')
self.assertEqual(self.controlfield.value(),
'831227m19799999nyu ||| | ger ')
def test_non_integer_tag(self):
# make sure this doesn't throw an exception
field = Field(tag='3 0', indicators=[0, 1], subfields=['a', 'foo'])
def test_add_subfield(self):
field = Field(tag='245', indicators=[0, 1], subfields=['a', 'foo'])
field.add_subfield('a', 'bar')
self.assertEqual(field.__str__(), '=245 01$afoo$abar')
field.add_subfield('b', 'baz', 0)
self.assertEqual(field.__str__(), '=245 01$bbaz$afoo$abar')
field.add_subfield('c', 'qux', 2)
self.assertEqual(field.__str__(), '=245 01$bbaz$afoo$cqux$abar')
field.add_subfield('z', 'wat', 8)
self.assertEqual(field.__str__(), '=245 01$bbaz$afoo$cqux$abar$zwat')
def test_delete_subfield(self):
field = Field(tag='200',
indicators=[0, 1],
subfields=['a', 'My Title', 'a', 'Kinda Bogus Anyhow'])
self.assertEqual(field.delete_subfield('z'), None)
self.assertEqual(field.delete_subfield('a'), 'My Title')
self.assertEqual(field.delete_subfield('a'), 'Kinda Bogus Anyhow')
self.assertTrue(len(field.subfields) == 0)
def test_is_subject_field(self):
self.assertEqual(self.subjectfield.is_subject_field(), True)
self.assertEqual(self.field.is_subject_field(), False)
def test_format_field(self):
self.subjectfield.add_subfield('6', '880-4')
self.assertEqual(self.subjectfield.format_field(),
'Python (Computer program language) -- Poetry.')
self.field.add_subfield('6', '880-1')
self.assertEqual(self.field.format_field(),
'Huckleberry Finn: An American Odyssey')
def test_tag_normalize(self):
f = Field(tag='42', indicators=['', ''])
self.assertEqual(f.tag, '042')
def test_alphatag(self):
f = Field(tag='CAT', indicators=[0, 1], subfields=['a', 'foo'])
self.assertEqual(f.tag, 'CAT')
self.assertEqual(f['a'], 'foo')
self.assertEqual(f.is_control_field(), False)
def test_setitem_no_key(self):
try:
self.field['h'] = 'error'
except KeyError:
pass
except Exception:
e = sys.exc_info()[1]
self.fail('Unexpected exception thrown: %s' % e)
else:
self.fail('KeyError not thrown')
def test_setitem_repeated_key(self):
try:
self.field.add_subfield('a', 'bar')
self.field['a'] = 'error'
except KeyError:
pass
except Exception:
e = sys.exc_info()[1]
self.fail('Unexpected exception thrown: %s' % e)
else:
self.fail('KeyError not thrown')
def test_iter_over_controlfield(self):
try:
l = [subfield for subfield in self.controlfield]
except AttributeError as e:
self.fail('Error during iteration: %s' % e)
def test_setitem(self):
self.field['a'] = 'changed'
self.assertEqual(self.field['a'], 'changed')
def test_delete_subfield_only_by_code(self):
self.field.delete_subfield('An American Odyssey')
self.assertEqual(self.field['b'], 'An American Odyssey')
self.field.delete_subfield('b')
self.assertTrue(self.field['b'] is None)
def test_set_indicators_affects_str(self):
self.field.indicators[0] = '9'
self.field.indicator2 = '9'
self.assertEquals(str(self.field),
'=245 99$aHuckleberry Finn: $bAn American Odyssey')
def test_set_indicators_affects_marc(self):
self.field.indicators[0] = '9'
self.field.indicator2 = '9'
self.assertEquals(
self.field.as_marc('utf-8'),
b'99\x1faHuckleberry Finn: \x1fbAn American Odyssey\x1e')
def test_alphatag(self):
f = Field(tag='CAT', indicators=[0, 1], subfields=['a', 'foo'])
self.assertEqual(f.tag, 'CAT')
self.assertEqual(f['a'], 'foo')
self.assertEqual(f.is_control_field(), False)
def test_tag_normalize(self):
f = Field(tag='42', indicators=['', ''])
self.assertEqual(f.tag, '042')
def test_add_subfield(self):
field = Field(tag='245', indicators=[0, 1], subfields=['a', 'foo'])
field.add_subfield('a', 'bar')
self.assertEquals(field.__str__(), '=245 01$afoo$abar')
class FieldTest(unittest.TestCase):
def setUp(self):
self.field = Field(
tag='245',
indicators=[0, 1],
subfields=['a', 'Huckleberry Finn: ', 'b', 'An American Odyssey'])
self.controlfield = Field(
tag='008', data='831227m19799999nyu ||| | ger ')
self.subjectfield = Field(tag='650',
indicators=[' ', '0'],
subfields=[
'a',
'Python (Computer program language)',
'v', 'Poetry.'
])
def test_string(self):
self.assertEquals(str(self.field),
'=245 01$aHuckleberry Finn: $bAn American Odyssey')
def test_controlfield_string(self):
self.assertEquals(str(self.controlfield),
r'=008 831227m19799999nyu\\\\\\\\\\\|||\|\ger\\')
def test_indicators(self):
assert self.field.indicator1 is 0
self.assertEqual(self.field.indicator2, 1)
def test_subfields_created(self):
subfields = self.field.subfields
self.assertEqual(len(subfields), 4)
def test_subfield_short(self):
self.assertEqual(self.field['a'], 'Huckleberry Finn: ')
self.assertEqual(self.field['z'], None)
def test_subfields(self):
self.assertEqual(self.field.get_subfields('a'), ['Huckleberry Finn: '])
self.assertEqual(self.subjectfield.get_subfields('a'),
['Python (Computer program language)'])
def test_subfields_multi(self):
self.assertEqual(self.field.get_subfields('a', 'b'),
['Huckleberry Finn: ', 'An American Odyssey'])
self.assertEqual(self.subjectfield.get_subfields('a', 'v'),
['Python (Computer program language)', 'Poetry.'])
def test_encode(self):
self.field.as_marc()
def test_iterator(self):
string = ""
for subfield in self.field:
string += subfield[0]
string += subfield[1]
self.assertEquals(string, 'aHuckleberry Finn: bAn American Odyssey')
def test_value(self):
self.assertEquals(self.field.value(),
'Huckleberry Finn: An American Odyssey')
self.assertEquals(self.controlfield.value(),
'831227m19799999nyu ||| | ger ')
def test_non_integer_tag(self):
# make sure this doesn't throw an exception
field = Field(tag='3 0', indicators=[0, 1], subfields=['a', 'foo'])
def test_add_subfield(self):
field = Field(tag='245', indicators=[0, 1], subfields=['a', 'foo'])
field.add_subfield('a', 'bar')
self.assertEquals(field.__str__(), '=245 01$afoo$abar')
def test_delete_subfield(self):
field = Field(tag='200',
indicators=[0, 1],
subfields=['a', 'My Title', 'a', 'Kinda Bogus Anyhow'])
self.assertEquals(field.delete_subfield('z'), None)
self.assertEquals(field.delete_subfield('a'), 'My Title')
self.assertEquals(field.delete_subfield('a'), 'Kinda Bogus Anyhow')
self.assertTrue(len(field.subfields) == 0)
def test_is_subject_field(self):
self.assertEqual(self.subjectfield.is_subject_field(), True)
self.assertEqual(self.field.is_subject_field(), False)
def test_format_field(self):
self.assertEqual(self.subjectfield.format_field(),
'Python (Computer program language) -- Poetry.')
self.assertEqual(self.field.format_field(),
'Huckleberry Finn: An American Odyssey')
def test_tag_normalize(self):
f = Field(tag='42', indicators=['', ''])
self.assertEqual(f.tag, '042')
def test_alphatag(self):
f = Field(tag='CAT', indicators=[0, 1], subfields=['a', 'foo'])
self.assertEqual(f.tag, 'CAT')
self.assertEqual(f['a'], 'foo')
self.assertEqual(f.is_control_field(), False)
class FieldTest(unittest.TestCase):
def setUp(self):
self.field = Field(
tag = '245',
indicators = [ 0, 1 ],
subfields = [
'a', 'Huckleberry Finn: ',
'b', 'An American Odyssey'
]
)
self.controlfield = Field(
tag = '008',
data = '831227m19799999nyu ||| | ger '
)
self.subjectfield = Field(
tag = '650',
indicators = [' ', '0'],
subfields = [
'a', 'Python (Computer program language)',
'v', 'Poetry.'
]
)
def test_string(self):
self.assertEqual(str(self.field),
'=245 01$aHuckleberry Finn: $bAn American Odyssey')
def test_controlfield_string(self):
self.assertEqual(str(self.controlfield),
r'=008 831227m19799999nyu\\\\\\\\\\\|||\|\ger\\')
def test_indicators(self):
self.assertEqual(self.field.indicator1, '0')
self.assertEqual(self.field.indicator2, '1')
def test_subfields_created(self):
subfields = self.field.subfields
self.assertEqual(len(subfields), 4)
def test_subfield_short(self):
self.assertEqual(self.field['a'], 'Huckleberry Finn: ')
self.assertEqual(self.field['z'], None)
def test_subfields(self):
self.assertEqual(self.field.get_subfields('a'),
['Huckleberry Finn: '])
self.assertEqual(self.subjectfield.get_subfields('a'),
['Python (Computer program language)'])
def test_subfields_multi(self):
self.assertEqual(self.field.get_subfields('a','b'),
['Huckleberry Finn: ', 'An American Odyssey' ])
self.assertEqual(self.subjectfield.get_subfields('a','v'),
['Python (Computer program language)', 'Poetry.' ])
def test_encode(self):
self.field.as_marc(encoding='utf-8')
def test_membership(self):
self.assertTrue('a' in self.field)
self.assertFalse('zzz' in self.field)
def test_iterator(self):
string = ""
for subfield in self.field:
string += subfield[0]
string += subfield[1]
self.assertEqual(string, 'aHuckleberry Finn: bAn American Odyssey')
def test_value(self):
self.assertEqual(self.field.value(),
'Huckleberry Finn: An American Odyssey')
self.assertEqual(self.controlfield.value(),
'831227m19799999nyu ||| | ger ')
def test_non_integer_tag(self):
# make sure this doesn't throw an exception
field = Field(tag='3 0', indicators=[0, 1], subfields=['a', 'foo'])
def test_add_subfield(self):
field = Field(tag='245', indicators=[0, 1], subfields=['a', 'foo'])
field.add_subfield('a','bar')
self.assertEqual(field.__str__(), '=245 01$afoo$abar')
def test_delete_subfield(self):
field = Field(tag='200', indicators=[0,1], subfields=['a','My Title', 'a', 'Kinda Bogus Anyhow'])
self.assertEqual(field.delete_subfield('z'), None)
self.assertEqual(field.delete_subfield('a'), 'My Title')
self.assertEqual(field.delete_subfield('a'), 'Kinda Bogus Anyhow')
self.assertTrue(len(field.subfields) == 0)
def test_is_subject_field(self):
self.assertEqual(self.subjectfield.is_subject_field(), True)
self.assertEqual(self.field.is_subject_field(), False)
def test_format_field(self):
self.subjectfield.add_subfield('6', '880-4')
self.assertEqual(self.subjectfield.format_field(),
'Python (Computer program language) -- Poetry.')
self.field.add_subfield('6', '880-1')
self.assertEqual(self.field.format_field(),
'Huckleberry Finn: An American Odyssey')
def test_tag_normalize(self):
f = Field(tag='42', indicators=['', ''])
self.assertEqual(f.tag, '042')
def test_alphatag(self):
f = Field(tag='CAT', indicators=[0, 1], subfields=['a', 'foo'])
self.assertEqual(f.tag, 'CAT')
self.assertEqual(f['a'], 'foo')
self.assertEqual(f.is_control_field(), False)
def test_setitem_no_key(self):
try:
self.field['h'] = 'error'
except KeyError:
pass
except Exception:
e = sys.exc_info()[1]
self.fail('Unexpected exception thrown: %s' % e)
else:
self.fail('KeyError not thrown')
def test_setitem_repeated_key(self):
try:
self.field.add_subfield('a','bar')
self.field['a'] = 'error'
except KeyError:
pass
except Exception:
e = sys.exc_info()[1]
self.fail('Unexpected exception thrown: %s' % e)
else:
self.fail('KeyError not thrown')
def test_iter_over_controlfield(self):
try:
l = [subfield for subfield in self.controlfield]
except AttributeError as e:
self.fail('Error during iteration: %s' % e)
def test_setitem(self):
self.field['a'] = 'changed'
self.assertEqual(self.field['a'], 'changed')
def test_delete_subfield_only_by_code(self):
self.field.delete_subfield('An American Odyssey')
self.assertEqual(self.field['b'], 'An American Odyssey')
self.field.delete_subfield('b')
self.assertTrue(self.field['b'] is None)
def test_tag_normalize(self):
f = Field(tag="42", indicators=["", ""])
self.assertEqual(f.tag, "042")
def test_alphatag(self):
f = Field(tag="CAT", indicators=[0, 1], subfields=["a", "foo"])
self.assertEqual(f.tag, "CAT")
self.assertEqual(f["a"], "foo")
self.assertEqual(f.is_control_field(), False)
def test_non_integer_tag(self):
# make sure this doesn't throw an exception
field = Field(tag='3 0', indicators=[0, 1], subfields=['a', 'foo'])
def test_alphatag(self):
f = Field(tag='CAT', indicators=[0, 1], subfields=['a', 'foo'])
self.assertEqual(f.tag, 'CAT')
self.assertEqual(f['a'], 'foo')
self.assertEqual(f.is_control_field(), False)
def test_add_subfield(self):
field = Field(tag='245', indicators=[0, 1], subfields=['a', 'foo'])
field.add_subfield('a', 'bar')
self.assertEqual(field.__str__(), '=245 01$afoo$abar')
field.add_subfield('b', 'baz', 0)
self.assertEqual(field.__str__(), '=245 01$bbaz$afoo$abar')
field.add_subfield('c', 'qux', 2)
self.assertEqual(field.__str__(), '=245 01$bbaz$afoo$cqux$abar')
field.add_subfield('z', 'wat', 8)
self.assertEqual(field.__str__(), '=245 01$bbaz$afoo$cqux$abar$zwat')
def test_pub_date(self):
record = Record()
self.assertEqual(record.pub_date(), None)
record.add_field(Field('269', [' ', ' '], subfields=['a', '20170123']))
self.assertEqual(record.pub_date(), '20170123')
def decode_marc(self,
marc,
to_unicode=True,
force_utf8=False,
hide_utf8_warnings=False,
utf8_handling='ignore'):
self.leader = marc[0:LEADER_LEN]
if len(self.leader) != LEADER_LEN:
raise RecordLeaderInvalid
if self.leader[9] == 'a' or self.force_utf8:
encoding = 'utf-8'
else:
encoding = 'iso8859-1'
base_address = int(marc[12:17])
if base_address <= 0:
raise BaseAddressNotFound
if base_address >= len(marc):
raise BaseAddressInvalid
directory = marc[LEADER_LEN:base_address - 1]
if len(directory) % DIRECTORY_ENTRY_LEN != 0:
raise RecordDirectoryInvalid
field_total = len(directory) / DIRECTORY_ENTRY_LEN
field_count = 0
while field_count < field_total:
entry_start = field_count * DIRECTORY_ENTRY_LEN
entry_end = entry_start + DIRECTORY_ENTRY_LEN
entry = directory[entry_start:entry_end]
entry_tag = entry[0:3]
entry_length = int(entry[3:7])
entry_offset = int(entry[7:12])
entry_data = marc[base_address + entry_offset:base_address +
entry_offset + entry_length - 1]
if entry_tag < '010' and entry_tag.isdigit():
if to_unicode:
field = Field(tag=entry_tag, data=entry_data)
else:
field = RawField(tag=entry_tag, data=entry_data)
else:
subfields = list()
subs = entry_data.split(SUBFIELD_INDICATOR)
#subs = entry_data.split(SUBFIELD_INDICATOR.encode().decode('ascii', errors='ignore'))
first_indicator = second_indicator = ' '
#subs[0] = subs[0].decode('ascii')
if len(subs[0]) == 0:
logging.warning("missing indicators: %s", entry_data)
first_indicator = second_indicator = ' '
elif len(subs[0]) == 1:
logging.warning("only 1 indicator found: %s", entry_data)
first_indicator = subs[0][0]
second_indicator = ' '
elif len(subs[0]) > 2:
logging.warning("more than 2 indicators found: %s",
entry_data)
first_indicator = subs[0][0]
second_indicator = subs[0][1]
else:
first_indicator = subs[0][0]
second_indicator = subs[0][1]
for subfield in subs[1:]:
if len(subfield) == 0:
continue
code = subfield[0:1]
data = subfield[1:]
if to_unicode:
if self.leader[9] == 'a' or force_utf8:
data = data.encode().decode('utf-8', utf8_handling)
else:
data = marc8_to_unicode(data, hide_utf8_warnings)
subfields.append(code)
subfields.append(data)
if to_unicode:
field = Field(
tag=entry_tag,
indicators=[first_indicator, second_indicator],
subfields=subfields)
else:
field = RawField(
tag=entry_tag,
indicators=[first_indicator, second_indicator],
subfields=subfields)
self.add_field(field)
field_count += 1
if field_count == 0:
raise NoFieldsFound
return self
def test_delete_subfield(self):
field = Field(tag='200', indicators=[0,1], subfields=['a','My Title', 'a', 'Kinda Bogus Anyhow'])
self.assertEquals(field.delete_subfield('z'), None)
self.assertEquals(field.delete_subfield('a'), 'My Title')
self.assertEquals(field.delete_subfield('a'), 'Kinda Bogus Anyhow')
self.assertTrue(len(field.subfields) == 0)
def decode_marc(self,
marc,
to_unicode=False,
force_utf8=False,
hide_utf8_warnings=False,
utf8_handling='strict'):
"""
decode_marc() accepts a MARC record in transmission format as a
a string argument, and will populate the object based on the data
found. The Record constructor actually uses decode_marc() behind
the scenes when you pass in a chunk of MARC data to it.
"""
# extract record leader
self.leader = marc[0:LEADER_LEN]
if len(self.leader) != LEADER_LEN:
raise RecordLeaderInvalid
# extract the byte offset where the record data starts
base_address = int(marc[12:17])
if base_address <= 0:
raise BaseAddressNotFound
if base_address >= len(marc):
raise BaseAddressInvalid
# extract directory, base_address-1 is used since the
# director ends with an END_OF_FIELD byte
directory = marc[LEADER_LEN:base_address - 1]
# determine the number of fields in record
if len(directory) % DIRECTORY_ENTRY_LEN != 0:
raise RecordDirectoryInvalid
field_total = len(directory) / DIRECTORY_ENTRY_LEN
# add fields to our record using directory offsets
field_count = 0
while field_count < field_total:
entry_start = field_count * DIRECTORY_ENTRY_LEN
entry_end = entry_start + DIRECTORY_ENTRY_LEN
entry = directory[entry_start:entry_end]
entry_tag = entry[0:3]
entry_length = int(entry[3:7])
entry_offset = int(entry[7:12])
entry_data = marc[base_address + entry_offset:base_address +
entry_offset + entry_length - 1]
# assume controlfields are numeric; replicates ruby-marc behavior
if entry_tag < '010' and entry_tag.isdigit():
field = Field(tag=entry_tag, data=entry_data)
else:
subfields = list()
subs = entry_data.split(SUBFIELD_INDICATOR)
# make sure we've got the indicators and subfields we expected
if len(subs) < 2 or len(subs[0]) != 2:
# TODO: should we log a warning, or throw an exception here?
# we are currently just moving forward
first_indicator = ' '
second_indicator = ' '
else:
first_indicator = subs[0][0]
second_indicator = subs[0][1]
for subfield in subs[1:]:
if len(subfield) == 0:
continue
code = subfield[0]
data = subfield[1:]
if to_unicode:
if self.leader[9] == 'a' or force_utf8:
data = data.decode('utf-8', utf8_handling)
else:
data = marc8_to_unicode(
data, hide_utf8_warnings)
subfields.append(code)
subfields.append(data)
field = Field(
tag=entry_tag,
indicators=[first_indicator, second_indicator],
subfields=subfields,
)
self.add_field(field)
field_count += 1
if field_count == 0:
raise NoFieldsFound