X-Git-Url: https://git.mdrn.pl/librarian.git/blobdiff_plain/fefdce4e24f9e397df5538fe6e7f54b5ece4d841..1e1abb45277301597bcbb54d17675330bedd7fc5:/src/librarian/dcparser.py diff --git a/src/librarian/dcparser.py b/src/librarian/dcparser.py index 92afc01..2072695 100644 --- a/src/librarian/dcparser.py +++ b/src/librarian/dcparser.py @@ -46,12 +46,19 @@ class Person(object): surname = parts[0] names = [] elif len(parts) != 2: - raise ValueError("Invalid person name. There should be at most one comma: \"%s\"." % text.encode('utf-8')) + raise ValueError( + "Invalid person name. " + "There should be at most one comma: \"%s\"." + % text.encode('utf-8') + ) else: surname = parts[0] if len(parts[1]) == 0: # there is no non-whitespace data after the comma - raise ValueError("Found a comma, but no names given: \"%s\" -> %r." % (text, parts)) + raise ValueError( + "Found a comma, but no names given: \"%s\" -> %r." + % (text, parts) + ) names = parts[1].split() return cls(surname, *names) @@ -59,10 +66,12 @@ class Person(object): return u" ".join(self.first_names + (self.last_name,)) def __eq__(self, right): - return self.last_name == right.last_name and self.first_names == right.first_names + return (self.last_name == right.last_name + and self.first_names == right.first_names) def __lt__(self, other): - return (self.last_name, self.first_names) < (other.last_name, other.first_names) + return ((self.last_name, self.first_names) + < (other.last_name, other.first_names)) def __hash__(self): return hash((self.last_name, self.first_names)) @@ -74,25 +83,32 @@ class Person(object): return self.last_name def __repr__(self): - return 'Person(last_name=%r, first_names=*%r)' % (self.last_name, self.first_names) + return 'Person(last_name=%r, first_names=*%r)' % ( + self.last_name, self.first_names + ) def as_date(text): - """Dates for digitization of pictures. It seems we need the following: -ranges: '1350-1450', -centuries: "XVIII w.' -half centuries/decades: '2 poł. XVIII w.', 'XVII w., l. 20' -later-then: 'po 1450' -circa 'ok. 1813-1814', 'ok.1876-ok.1886 -turn: 1893/1894 -for now we will translate this to some single date losing information of course. + """ + Dates for digitization of pictures. It seems we need the following: + ranges: '1350-1450', + centuries: "XVIII w.' + half centuries/decades: '2 poł. XVIII w.', 'XVII w., l. 20' + later-then: 'po 1450' + circa 'ok. 1813-1814', 'ok.1876-ok.1886 + turn: 1893/1894 + + 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, six.binary_type): text = text.decode("utf-8") - century_format = u"(?:([12]) *poł[.]? +)?([MCDXVI]+) *w[.,]*(?: *l[.]? *([0-9]+))?" + century_format = ( + u"(?:([12]) *poł[.]? +)?([MCDXVI]+) *w[.,]*(?: *l[.]? *([0-9]+))?" + ) vague_format = u"(?:po *|ok. *)?([0-9]{4})(-[0-9]{2}-[0-9]{2})?" m = re.match(century_format, text) @@ -103,7 +119,10 @@ for now we will translate this to some single date losing information of course. 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") + raise ValueError( + "Bad date format. " + "Cannot specify both half and decade of century." + ) half = int(half) t = ((century*100 + (half-1)*50), 1, 1) else: @@ -120,7 +139,7 @@ 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 as e: + except ValueError: raise ValueError("Unrecognized date format. Try YYYY-MM-DD or YYYY.") @@ -140,7 +159,8 @@ def as_wluri_strict(text): class Field(object): - def __init__(self, uri, attr_name, validator=as_unicode, strict=None, multiple=False, salias=None, **kwargs): + def __init__(self, uri, attr_name, validator=as_unicode, strict=None, + multiple=False, salias=None, **kwargs): self.uri = uri self.name = attr_name self.validator = validator @@ -148,7 +168,8 @@ class Field(object): self.multiple = multiple self.salias = salias - self.required = kwargs.get('required', True) and 'default' not in kwargs + self.required = (kwargs.get('required', True) + and 'default' not in kwargs) self.default = kwargs.get('default', [] if multiple else [None]) def validate_value(self, val, strict=False): @@ -170,9 +191,14 @@ class Field(object): new_values.append(nv) return new_values elif len(val) > 1: - raise ValidationError("Multiple values not allowed for field '%s'" % self.uri) + raise ValidationError( + "Multiple values not allowed for field '%s'" % self.uri + ) elif len(val) == 0: - raise ValidationError("Field %s has no value to assign. Check your defaults." % self.uri) + raise ValidationError( + "Field %s has no value to assign. Check your defaults." + % self.uri + ) else: if validator is None or val[0] is None: return val[0] @@ -181,9 +207,12 @@ class Field(object): setattr(nv, 'lang', val[0].lang) return nv except ValueError as e: - raise ValidationError("Field '%s' - invald value: %s" % (self.uri, e.message)) + raise ValidationError( + "Field '%s' - invald value: %s" + % (self.uri, e.message) + ) - def validate(self, fdict, fallbacks=None, strict=False): + def validate(self, fdict, fallbacks=None, strict=False, validate_required=True): if fallbacks is None: fallbacks = {} if self.uri not in fdict: @@ -198,8 +227,10 @@ class Field(object): f = [fallbacks[self.salias]] else: f = self.default - else: + elif validate_required: raise ValidationError("Required field %s not found" % self.uri) + else: + return None else: f = fdict[self.uri] @@ -229,31 +260,37 @@ class DCInfo(type): class WorkInfo(six.with_metaclass(DCInfo, object)): FIELDS = ( - Field(DCNS('creator'), 'authors', as_person, salias='author', multiple=True), + Field(DCNS('creator'), 'authors', as_person, salias='author', + multiple=True), Field(DCNS('title'), 'title'), Field(DCNS('type'), 'type', required=False, multiple=True), Field(DCNS('contributor.editor'), 'editors', as_person, salias='editor', multiple=True, required=False), Field(DCNS('contributor.technical_editor'), 'technical_editors', - as_person, salias='technical_editor', multiple=True, required=False), - Field(DCNS('contributor.funding'), 'funders', salias='funder', multiple=True, required=False), + as_person, salias='technical_editor', multiple=True, + required=False), + Field(DCNS('contributor.funding'), 'funders', salias='funder', + multiple=True, required=False), Field(DCNS('contributor.thanks'), 'thanks', required=False), Field(DCNS('date'), 'created_at'), - Field(DCNS('date.pd'), 'released_to_public_domain_at', as_date, required=False), + Field(DCNS('date.pd'), 'released_to_public_domain_at', as_date, + required=False), Field(DCNS('publisher'), 'publisher', multiple=True), Field(DCNS('language'), 'language'), Field(DCNS('description'), 'description', required=False), Field(DCNS('source'), 'source_name', required=False), - Field(DCNS('source.URL'), 'source_urls', salias='source_url', multiple=True, required=False), + Field(DCNS('source.URL'), 'source_urls', salias='source_url', + multiple=True, required=False), Field(DCNS('identifier.url'), 'url', WLURI, strict=as_wluri_strict), Field(DCNS('rights.license'), 'license', required=False), Field(DCNS('rights'), 'license_description'), - Field(PLMETNS('digitisationSponsor'), 'sponsors', multiple=True, required=False), + Field(PLMETNS('digitisationSponsor'), 'sponsors', multiple=True, + required=False), Field(WLNS('digitisationSponsorNote'), 'sponsor_note', required=False), Field(WLNS('developmentStage'), 'stage', required=False), ) @@ -292,12 +329,16 @@ class WorkInfo(six.with_metaclass(DCInfo, object)): @classmethod def from_element(cls, rdf_tag, *args, **kwargs): - # the tree is already parsed, so we don't need to worry about Expat errors + # The tree is already parsed, + # so we don't need to worry about Expat errors. field_dict = {} desc = rdf_tag.find(".//" + RDFNS('Description')) if desc is None: - raise NoDublinCore("There must be a '%s' element inside the RDF." % RDFNS('Description')) + raise NoDublinCore( + "There must be a '%s' element inside the RDF." + % RDFNS('Description') + ) lang = None p = desc @@ -324,16 +365,20 @@ class WorkInfo(six.with_metaclass(DCInfo, object)): return cls(desc.attrib, field_dict, *args, **kwargs) - def __init__(self, rdf_attrs, dc_fields, fallbacks=None, strict=False): - """rdf_attrs should be a dictionary-like object with any attributes of the RDF:Description. - dc_fields - dictionary mapping DC fields (with namespace) to list of text values for the - given field. """ + def __init__(self, rdf_attrs, dc_fields, fallbacks=None, strict=False, validate_required=True): + """ + rdf_attrs should be a dictionary-like object with any attributes + of the RDF:Description. + dc_fields - dictionary mapping DC fields (with namespace) to + list of text values for the given field. + """ self.about = rdf_attrs.get(RDFNS('about')) self.fmap = {} for field in self.FIELDS: - value = field.validate(dc_fields, fallbacks=fallbacks, strict=strict) + value = field.validate(dc_fields, fallbacks=fallbacks, + strict=strict, validate_required=validate_required) setattr(self, 'prop_' + field.name, value) self.fmap[field.name] = field if field.salias: @@ -367,8 +412,10 @@ class WorkInfo(six.with_metaclass(DCInfo, object)): return object.__setattr__(self, name, newvalue) def update(self, field_dict): - """Update using field_dict. Verify correctness, but don't check if all - required fields are present.""" + """ + Update using field_dict. Verify correctness, but don't check + if all required fields are present. + """ for field in self.FIELDS: if field.name in field_dict: setattr(self, field.name, field_dict[field.name]) @@ -448,27 +495,36 @@ class WorkInfo(six.with_metaclass(DCInfo, object)): class BookInfo(WorkInfo): FIELDS = ( - Field(DCNS('audience'), 'audiences', salias='audience', multiple=True, required=False), + Field(DCNS('audience'), 'audiences', salias='audience', multiple=True, + required=False), - Field(DCNS('subject.period'), 'epochs', salias='epoch', multiple=True, required=False), - Field(DCNS('subject.type'), 'kinds', salias='kind', multiple=True, required=False), - Field(DCNS('subject.genre'), 'genres', salias='genre', multiple=True, required=False), + Field(DCNS('subject.period'), 'epochs', salias='epoch', multiple=True, + required=False), + Field(DCNS('subject.type'), 'kinds', salias='kind', multiple=True, + required=False), + Field(DCNS('subject.genre'), 'genres', salias='genre', multiple=True, + required=False), Field(DCNS('subject.location'), 'location', required=False), Field(DCNS('contributor.translator'), 'translators', as_person, salias='translator', multiple=True, required=False), - Field(DCNS('relation.hasPart'), 'parts', WLURI, strict=as_wluri_strict, multiple=True, required=False), - Field(DCNS('relation.isVariantOf'), 'variant_of', WLURI, strict=as_wluri_strict, required=False), + Field(DCNS('relation.hasPart'), 'parts', WLURI, strict=as_wluri_strict, + multiple=True, required=False), + Field(DCNS('relation.isVariantOf'), 'variant_of', WLURI, + strict=as_wluri_strict, required=False), Field(DCNS('relation.coverImage.url'), 'cover_url', required=False), - Field(DCNS('relation.coverImage.attribution'), 'cover_by', required=False), - Field(DCNS('relation.coverImage.source'), 'cover_source', required=False), + Field(DCNS('relation.coverImage.attribution'), 'cover_by', + required=False), + Field(DCNS('relation.coverImage.source'), 'cover_source', + required=False), # WLCover-specific. Field(WLNS('coverBarColor'), 'cover_bar_color', required=False), Field(WLNS('coverBoxPosition'), 'cover_box_position', required=False), Field(WLNS('coverClass'), 'cover_class', default=['default']), - Field(WLNS('coverLogoUrl'), 'cover_logo_urls', multiple=True, required=False), + Field(WLNS('coverLogoUrl'), 'cover_logo_urls', multiple=True, + required=False), Field('pdf-id', 'isbn_pdf', required=False), Field('epub-id', 'isbn_epub', required=False),