X-Git-Url: https://git.mdrn.pl/librarian.git/blobdiff_plain/175c5cf4f727162fa5bddd2460d37595251bbe8e..fdcbc69e0f1f8f4945cd37c1e10be34a910d48c6:/src/librarian/dcparser.py?ds=inline diff --git a/src/librarian/dcparser.py b/src/librarian/dcparser.py index 1976850..f402c04 100644 --- a/src/librarian/dcparser.py +++ b/src/librarian/dcparser.py @@ -1,173 +1,32 @@ -# -*- coding: utf-8 -*- -# # 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, - XMLNS, WLURI, WLNS, PLMETNS) + XMLNS, WLNS, PLMETNS) -import lxml.etree as etree # ElementTree API using libxml2 +import lxml.etree as etree from lxml.etree import XMLSyntaxError - -class TextPlus(six.text_type): - pass - - -class DatePlus(date): - pass - - -# ============== -# = 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): - self.last_name = last_name - self.first_names = first_names - - @classmethod - def from_text(cls, text): - parts = [token.strip() for token in text.split(',')] - if len(parts) == 1: - 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') - ) - 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) - ) - names = parts[1].split() - return cls(surname, *names) - - def readable(self): - 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) - - 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 __str__(self): - if len(self.first_names) > 0: - return '%s, %s' % (self.last_name, ' '.join(self.first_names)) - else: - return self.last_name - - def __repr__(self): - 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. - """ - 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]+))?" - ) - vague_format = u"(?:po *|ok. *)?([0-9]{4})(-[0-9]{2}-[0-9]{2})?" - - m = re.match(century_format, text) - m2 = re.match(vague_format, text) - if m: - half = m.group(1) - decade = m.group(3) - 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." - ) - half = int(half) - t = ((century*100 + (half-1)*50), 1, 1) - else: - decade = int(decade or 0) - t = ((century*100 + decade), 1, 1) - elif m2: - year = m2.group(1) - mon_day = m2.group(2) - if mon_day: - t = time.strptime(year + mon_day, "%Y-%m-%d") - else: - t = time.strptime(year, '%Y') - else: - raise ValueError - - return DatePlus(t[0], t[1], t[2]) - except ValueError: - raise ValueError("Unrecognized date format. Try YYYY-MM-DD or YYYY.") - - -def as_person(text): - return Person.from_text(text) - - -def as_unicode(text): - if isinstance(text, six.text_type): - return text - else: - return TextPlus(text.decode('utf-8')) - -def as_bool(text): - return text == 'true' -as_bool.no_lang = True - -def as_wluri_strict(text): - return WLURI.strict(text) +from librarian.meta.types.bool import BoolValue +from librarian.meta.types.date import DateValue +from librarian.meta.types.person import Person +from librarian.meta.types.wluri import WLURI +from librarian.meta.types.text import TextValue class Field(object): - def __init__(self, uri, attr_name, validator=as_unicode, strict=None, + def __init__(self, uri, attr_name, value_type=TextValue, multiple=False, salias=None, **kwargs): self.uri = uri self.name = attr_name - self.validator = validator - self.strict = strict + self.value_type = value_type self.multiple = multiple self.salias = salias @@ -176,23 +35,12 @@ class Field(object): self.default = kwargs.get('default', [] if multiple else [None]) def validate_value(self, val, strict=False): - if strict and self.strict is not None: - validator = self.strict - else: - validator = self.validator + #if strict: + # value.validate() + try: if self.multiple: - if validator is None: - return val - new_values = [] - for v in val: - nv = v - if v is not None: - nv = validator(v) - if hasattr(v, 'lang'): - setattr(nv, 'lang', v.lang) - new_values.append(nv) - return new_values + return val elif len(val) > 1: raise ValidationError( "Multiple values not allowed for field '%s'" % self.uri @@ -203,16 +51,11 @@ class Field(object): % self.uri ) else: - if validator is None or val[0] is None: - return val[0] - nv = validator(val[0]) - if hasattr(val[0], 'lang') and not hasattr(validator, 'no_lang'): - setattr(nv, 'lang', val[0].lang) - return nv + return val[0] except ValueError as e: raise ValidationError( "Field '%s' - invald value: %s" - % (self.uri, e.message) + % (self.uri, str(e)) ) def validate(self, fdict, fallbacks=None, strict=False, validate_required=True): @@ -263,22 +106,22 @@ class DCInfo(type): class WorkInfo(six.with_metaclass(DCInfo, object)): FIELDS = ( - Field(DCNS('creator'), 'authors', as_person, salias='author', + Field(DCNS('creator'), 'authors', 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), + Person, salias='editor', multiple=True, required=False), Field(DCNS('contributor.technical_editor'), 'technical_editors', - as_person, salias='technical_editor', multiple=True, + 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, + Field(DCNS('date.pd'), 'released_to_public_domain_at', DateValue, required=False), Field(DCNS('publisher'), 'publisher', multiple=True), @@ -288,7 +131,7 @@ class WorkInfo(six.with_metaclass(DCInfo, object)): Field(DCNS('source'), 'source_name', 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('identifier.url'), 'url', WLURI), Field(DCNS('rights.license'), 'license', required=False), Field(DCNS('rights'), 'license_description'), @@ -300,6 +143,12 @@ class WorkInfo(six.with_metaclass(DCInfo, object)): Field(WLNS('developmentStage'), 'stage', required=False), ) + @classmethod + def get_field_by_uri(cls, uri): + for f in cls.FIELDS: + if f.uri == uri: + return f + @classmethod def from_bytes(cls, xml, *args, **kwargs): return cls.from_file(six.BytesIO(xml), *args, **kwargs) @@ -352,21 +201,25 @@ class WorkInfo(six.with_metaclass(DCInfo, object)): p = p.getparent() for e in desc.getchildren(): - fv = field_dict.get(e.tag, []) + tag = e.tag + if tag == 'meta': + meta_id = e.attrib.get('id') + if meta_id and meta_id.endswith('-id'): + tag = meta_id + + field = cls.get_field_by_uri(tag) + if field is None: + # Ignore unknown fields. + continue + + fv = field_dict.get(tag, []) if e.text is not None: - text = e.text - if not isinstance(text, six.text_type): - text = text.decode('utf-8') - val = TextPlus(text) + val = field.value_type.from_text(e.text) val.lang = e.attrib.get(XMLNS('lang'), lang) - if e.tag == 'meta': - meta_id = e.attrib.get('id') - if meta_id and meta_id.endswith('-id'): - field_dict[meta_id] = [val.replace('ISBN-', 'ISBN ')] else: val = e.text fv.append(val) - field_dict[e.tag] = fv + field_dict[tag] = fv return cls(desc.attrib, field_dict, *args, **kwargs) @@ -384,6 +237,7 @@ class WorkInfo(six.with_metaclass(DCInfo, object)): for field in self.FIELDS: value = field.validate(dc_fields, fallbacks=fallbacks, strict=strict, validate_required=validate_required) + print(field.name, value) setattr(self, 'prop_' + field.name, value) self.fmap[field.name] = field if field.salias: @@ -509,15 +363,16 @@ class BookInfo(WorkInfo): required=False), Field(DCNS('subject.genre'), 'genres', salias='genre', multiple=True, required=False), + Field(WLNS('category.legimi'), 'legimi', 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, + Person, salias='translator', multiple=True, required=False), + Field(DCNS('relation.hasPart'), 'parts', WLURI, multiple=True, required=False), Field(DCNS('relation.isVariantOf'), 'variant_of', WLURI, - strict=as_wluri_strict, required=False), + required=False), Field(DCNS('relation.coverImage.url'), 'cover_url', required=False), Field(DCNS('relation.coverImage.attribution'), 'cover_by', @@ -530,7 +385,7 @@ class BookInfo(WorkInfo): Field(WLNS('coverClass'), 'cover_class', default=['default']), Field(WLNS('coverLogoUrl'), 'cover_logo_urls', multiple=True, required=False), - Field(WLNS('endnotes'), 'endnotes', as_bool, + Field(WLNS('endnotes'), 'endnotes', BoolValue, required=False), Field('pdf-id', 'isbn_pdf', required=False),