X-Git-Url: https://git.mdrn.pl/librarian.git/blobdiff_plain/3cae7a60cf91b6e2b84628c5f3b4b2df77eda5d6..4e329824f40367945de11d3647396859092f5c2c:/librarian/dcparser.py diff --git a/librarian/dcparser.py b/librarian/dcparser.py index f8dfaf9..eeb750a 100644 --- a/librarian/dcparser.py +++ b/librarian/dcparser.py @@ -3,10 +3,14 @@ # This file is part of Librarian, licensed under GNU Affero GPLv3 or later. # Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information. # +from __future__ import unicode_literals + from xml.parsers.expat import ExpatError from datetime import date +from functools import total_ordering import time import re +import six from librarian.util import roman_to_int from librarian import (ValidationError, NoDublinCore, ParseError, DCNS, RDFNS, @@ -16,7 +20,7 @@ import lxml.etree as etree # ElementTree API using libxml2 from lxml.etree import XMLSyntaxError -class TextPlus(unicode): +class TextPlus(six.text_type): pass @@ -27,6 +31,8 @@ class DatePlus(date): # ============== # = Converters = # ============== +@six.python_2_unicode_compatible +@total_ordering class Person(object): """Single person with last name and a list of first names.""" def __init__(self, last_name, *first_names): @@ -55,13 +61,13 @@ class Person(object): def __eq__(self, right): return self.last_name == right.last_name and self.first_names == right.first_names - def __cmp__(self, other): - return cmp((self.last_name, self.first_names), (other.last_name, other.first_names)) + def __lt__(self, other): + return (self.last_name, self.first_names) < (other.last_name, other.first_names) def __hash__(self): return hash((self.last_name, self.first_names)) - def __unicode__(self): + def __str__(self): if len(self.first_names) > 0: return '%s, %s' % (self.last_name, ' '.join(self.first_names)) else: @@ -83,7 +89,7 @@ for now we will translate this to some single date losing information of course. """ try: # check out the "N. poł X w." syntax - if isinstance(text, str): + if isinstance(text, six.binary_type): text = text.decode("utf-8") century_format = u"(?:([12]) *poł[.]? +)?([MCDXVI]+) *w[.,]*(?: *l[.]? *([0-9]+))?" @@ -94,7 +100,7 @@ for now we will translate this to some single date losing information of course. if m: half = m.group(1) decade = m.group(3) - century = roman_to_int(str(m.group(2))) + century = roman_to_int(m.group(2)) if half is not None: if decade is not None: raise ValueError("Bad date format. Cannot specify both half and decade of century") @@ -114,7 +120,7 @@ for now we will translate this to some single date losing information of course. raise ValueError return DatePlus(t[0], t[1], t[2]) - except ValueError, e: + except ValueError as e: raise ValueError("Unrecognized date format. Try YYYY-MM-DD or YYYY.") @@ -123,7 +129,7 @@ def as_person(text): def as_unicode(text): - if isinstance(text, unicode): + if isinstance(text, six.text_type): return text else: return TextPlus(text.decode('utf-8')) @@ -174,7 +180,7 @@ class Field(object): if hasattr(val[0], 'lang'): setattr(nv, 'lang', val[0].lang) return nv - except ValueError, e: + except ValueError as e: raise ValidationError("Field '%s' - invald value: %s" % (self.uri, e.message)) def validate(self, fdict, fallbacks=None, strict=False): @@ -221,9 +227,7 @@ class DCInfo(type): return super(DCInfo, mcs).__new__(mcs, classname, bases, class_dict) -class WorkInfo(object): - __metaclass__ = DCInfo - +class WorkInfo(six.with_metaclass(DCInfo, object)): FIELDS = ( Field(DCNS('creator'), 'authors', as_person, salias='author', multiple=True), Field(DCNS('title'), 'title'), @@ -255,9 +259,8 @@ class WorkInfo(object): ) @classmethod - def from_string(cls, xml, *args, **kwargs): - from StringIO import StringIO - return cls.from_file(StringIO(xml), *args, **kwargs) + def from_bytes(cls, xml, *args, **kwargs): + return cls.from_file(six.BytesIO(xml), *args, **kwargs) @classmethod def from_file(cls, xmlfile, *args, **kwargs): @@ -282,9 +285,9 @@ class WorkInfo(object): # extract data from the element and make the info return cls.from_element(desc_tag, *args, **kwargs) - except XMLSyntaxError, e: + except XMLSyntaxError as e: raise ParseError(e) - except ExpatError, e: + except ExpatError as e: raise ParseError(e) @classmethod @@ -306,7 +309,7 @@ class WorkInfo(object): fv = field_dict.get(e.tag, []) if e.text is not None: text = e.text - if not isinstance(text, unicode): + if not isinstance(text, six.text_type): text = text.decode('utf-8') val = TextPlus(text) val.lang = e.attrib.get(XMLNS('lang'), lang) @@ -394,11 +397,11 @@ class WorkInfo(object): for x in v: e = etree.Element(field.uri) if x is not None: - e.text = unicode(x) + e.text = six.text_type(x) description.append(e) else: e = etree.Element(field.uri) - e.text = unicode(v) + e.text = six.text_type(v) description.append(e) return root @@ -413,9 +416,9 @@ class WorkInfo(object): if field.multiple: if len(v) == 0: continue - v = [unicode(x) for x in v if x is not None] + v = [six.text_type(x) for x in v if x is not None] else: - v = unicode(v) + v = six.text_type(v) dc[field.name] = {'uri': field.uri, 'value': v} rdf['fields'] = dc @@ -430,15 +433,15 @@ class WorkInfo(object): if field.multiple: if len(v) == 0: continue - v = [unicode(x) for x in v if x is not None] + v = [six.text_type(x) for x in v if x is not None] else: - v = unicode(v) + v = six.text_type(v) result[field.name] = v if field.salias: v = getattr(self, field.salias) if v is not None: - result[field.salias] = unicode(v) + result[field.salias] = six.text_type(v) return result