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__init__.py
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#!/usr/bin/env python
# -*- coding: utf-8 -*-
# vim:fileencoding=UTF-8:ts=4:sw=4:sta:et:sts=4:ai
# TODO:
# - create class to parse records, access data with "get"
# - or at least use functions
from __future__ import unicode_literals
__license__ = 'GPL v3'
__copyright__ = '2017, Bernhard Geier <[email protected]>'
__docformat__ = 'en'
import re
import datetime
try:
# Python 2
from urllib import quote
from urllib2 import Request, urlopen, HTTPError
from Queue import Queue, Empty
except ImportError:
# Python3
from urllib.parse import quote
from urllib.request import Request, urlopen
from urllib.error import HTTPError
from queue import Queue, Empty
from lxml import etree
from calibre.ebooks.metadata.sources.base import Source
from calibre.ebooks.metadata import check_isbn
from calibre.ebooks.metadata.book.base import Metadata
from calibre.library.comments import sanitize_comments_html
from calibre.utils.localization import lang_as_iso639_1
from calibre.ebooks import normalize
from calibre_plugins.DNB_DE.helper import clean_series, uniq, remove_sorting_characters, clean_title, iso639_2b_as_iso639_3, strip_german_joiners, guess_series_from_title
class DNB_DE(Source):
name = 'DNB_DE'
description = _(
'Downloads metadata from the DNB (Deutsche National Bibliothek).')
supported_platforms = ['windows', 'osx', 'linux']
author = 'Citronalco'
version = (3, 2, 5)
minimum_calibre_version = (3, 48, 0)
capabilities = frozenset(['identify', 'cover'])
touched_fields = frozenset(['title', 'title_sort', 'authors', 'author_sort', 'publisher', 'pubdate', 'languages', 'tags', 'identifier:urn',
'identifier:idn', 'identifier:isbn', 'identifier:ddc', 'series', 'series_index', 'comments'])
has_html_comments = True
can_get_multiple_covers = False
supports_gzip_transfer_encoding = True
cached_cover_url_is_reliable = True
prefer_results_with_isbn = True
ignore_ssl_errors = True
MAXIMUMRECORDS = 10
QUERYURL = 'https://services.dnb.de/sru/dnb?version=1.1&maximumRecords=%s&operation=searchRetrieve&recordSchema=MARC21-xml&query=%s'
COVERURL = 'https://portal.dnb.de/opac/mvb/cover?isbn=%s'
def load_config(self):
"""
Load config settings
"""
import calibre_plugins.DNB_DE.config as cfg
self.cfg_guess_series = cfg.plugin_prefs[cfg.STORE_NAME].get(
cfg.KEY_GUESS_SERIES, False)
self.cfg_append_edition_to_title = cfg.plugin_prefs[cfg.STORE_NAME].get(
cfg.KEY_APPEND_EDITION_TO_TITLE, False)
self.cfg_fetch_subjects = cfg.plugin_prefs[cfg.STORE_NAME].get(
cfg.KEY_FETCH_SUBJECTS, 2)
self.cfg_skip_series_starting_with_publishers_name = cfg.plugin_prefs[cfg.STORE_NAME].get(
cfg.KEY_SKIP_SERIES_STARTING_WITH_PUBLISHERS_NAME, True)
self.cfg_unwanted_series_names = cfg.plugin_prefs[cfg.STORE_NAME].get(
cfg.KEY_UNWANTED_SERIES_NAMES, [])
def config_widget(self):
self.cw = None
from calibre_plugins.DNB_DE.config import ConfigWidget
return ConfigWidget(self)
def is_customizable(self):
return True
def identify(self, log, result_queue, abort, title=None, authors=None, identifiers=None, timeout=30):
self.load_config()
if authors is None:
authors = []
if identifiers is None:
identifiers = {}
# get identifying tags from book
idn = identifiers.get('dnb-idn', None)
isbn = check_isbn(identifiers.get('isbn', None))
#isbn = None
#authors = []
# remove pseudo authors from list of authors
ignored_authors = ['v. a.', 'v.a.', 'va', 'diverse', 'unknown', 'unbekannt']
for i in ignored_authors:
authors = [x for x in authors if x.lower() != i.lower()]
# exit on insufficient inputs
if not isbn and not idn and not title and not authors:
log.info(
"This plugin requires at least either ISBN, IDN, Title or Author(s).")
return None
# process queries
results = None
query_success = False
for query in self.create_query_variations(log, idn, isbn, authors, title):
results = self.execute_query(log, query, timeout)
if not results:
continue
log.info("Parsing records")
ns = {'marc21': 'http://www.loc.gov/MARC21/slim'}
for record in results:
book = {
'series': None,
'series_index': None,
'pubdate': None,
'languages': [],
'title': None,
'title_sort': None,
'authors': [],
'author_sort': None,
'edition': None,
'comments': None,
'idn': None,
'urn': None,
'isbn': None,
'ddc': [],
'subjects_gnd': [],
'subjects_non_gnd': [],
'publisher_name': None,
'publisher_location': None,
'alternative_xmls': [],
}
##### Field 336: "Content Type" #####
# Skip Audio Books
try:
mediatype = record.xpath("./marc21:datafield[@tag='336']/marc21:subfield[@code='a' and string-length(text())>0]", namespaces=ns)[0].text.strip().lower()
if mediatype in ('gesprochenes wort'):
continue
except IndexError:
pass
##### Field 337: "Media Type" #####
# Skip Audio and Video
try:
mediatype = record.xpath("./marc21:datafield[@tag='337']/marc21:subfield[@code='a' and string-length(text())>0]", namespaces=ns)[0].text.strip().lower()
if mediatype in ('audio', 'video'):
continue
except IndexError:
pass
##### Field 16: "National Bibliographic Agency Control Number" #####
# Get Identifier "IDN" (dnb-idn)
try:
book['idn'] = record.xpath("./marc21:datafield[@tag='016']/marc21:subfield[@code='a' and string-length(text())>0]", namespaces=ns)[0].text.strip()
log.info("[016.a] Identifier IDN: %s" % book['idn'])
except IndexError:
pass
##### Field 776: "Additional Physical Form Entry" #####
# References from ebook's entry to paper book's entry (and vice versa)
# Often only one of them contains comments or a cover
# Example: dnb-idb=1136409025
for i in record.xpath("./marc21:datafield[@tag='776']/marc21:subfield[@code='w' and string-length(text())>0]", namespaces=ns):
other_idn = re.sub(r"^\(.*\)", "", i.text.strip())
log.info("[776.w] Found other issue with IDN %s" % other_idn)
altquery = 'num=%s NOT (mat=film OR mat=music OR mat=microfiches OR cod=tt)' % other_idn
altresults = self.execute_query(log, altquery, timeout)
if altresults:
book['alternative_xmls'].append(altresults[0])
##### Field 264: "Production, Publication, Distribution, Manufacture, and Copyright Notice" #####
# Get Publisher Name, Publishing Location, Publishing Date
# Subfields:
# a: publishing location
# b: publisher name
# c: publishing date
for field in record.xpath("./marc21:datafield[@tag='264']", namespaces=ns):
if book['publisher_name'] and book['publisher_location'] and book['pubdate']:
break
if not book['publisher_location']:
location_parts = []
for i in field.xpath("./marc21:subfield[@code='a' and string-length(text())>0]", namespaces=ns):
location_parts.append(i.text.strip())
if location_parts:
book['publisher_location'] = ' '.join(location_parts).strip('[]')
if not book['publisher_name']:
try:
book['publisher_name'] = field.xpath("./marc21:subfield[@code='b' and string-length(text())>0]", namespaces=ns)[0].text.strip()
log.info("[264.b] Publisher: %s" % book['publisher_name'])
except IndexError:
pass
if not book['pubdate']:
try:
pubdate = field.xpath("./marc21:subfield[@code='c' and string-length(text())>=4]", namespaces=ns)[0].text.strip()
match = re.search(r"(\d{4})", pubdate)
year = match.group(1)
book['pubdate'] = datetime.datetime(int(year), 1, 1, 12, 30, 0)
log.info("[264.c] Publication Year: %s" % book['pubdate'])
except (IndexError, AttributeError):
pass
##### Field 245: "Title Statement" #####
# Get Title, Series, Series_Index, Subtitle
# Subfields: a: title, b: subtitle 1, n: number of part, p: name of part
# See: https://www.loc.gov/marc/bibliographic/bd245.html
# Examples:
# a = "The Endless Book", n[0] = 2, p[0] = "Second Season", n[1] = 3, p[1] = "Summertime", n[2] = 4, p[2] = "The Return of Foobar" Example: dnb-id 1008774839
# -> Title: "The Return Of Foobar"
# Series: "The Endless Book 2 - Second Season 3 - Summertime"
# Series Index: 4
# a = "The Endless Book", n[0] = 2, p[0] = "Second Season", n[1] = 3, p[1] = "Summertime", n[2] = 4"
# -> Title: "Summertime 4"
# Series: "The Endless Book 2 - Second Season 3 - Summertime"
# Series Index: 4
# a = "The Endless Book", n[0] = 2, p[0] = "Second Season", n[1] = 3, p[1] = "Summertime"
# -> Title: "Summertime"
# Series: "The Endless Book 2 - Second Season"
# Series Index: 3
# a = "The Endless Book", n[0] = 2, p[0] = "Second Season", n[1] = 3" Example: 956375146
# -> Title: "Second Season 3" n=2, p =1
# Series: "The Endless Book 2 - Second Season"
# Series Index: 3
# a = "The Endless Book", n[0] = 2, p[0] = "Second Season"
# -> Title: "Second Season" n=1,p=1
# Series: "The Endless Book"
# Series Index: 2
# a = "The Endless Book", n[0] = 2"
# -> Title: "The Endless Book 2"
# Series: "The Endless Book"
# Series Index: 2
for field in record.xpath("./marc21:datafield[@tag='245']", namespaces=ns):
title_parts = []
code_a = []
for i in field.xpath("./marc21:subfield[@code='a' and string-length(text())>0]", namespaces=ns):
code_a.append(i.text.strip())
code_n = []
for i in field.xpath("./marc21:subfield[@code='n' and string-length(text())>0]", namespaces=ns):
match = re.search(r"(\d+([,\.]\d+)?)", i.text.strip())
if match:
code_n.append(match.group(1))
else:
# looks like sometimes DNB does not know the series_index and uses something like "[...]"
match = re.search(r"\[\.\.\.\]", i.text.strip())
if match:
code_n.append('0')
code_p = []
for i in field.xpath("./marc21:subfield[@code='p' and string-length(text())>0]", namespaces=ns):
code_p.append(i.text.strip())
# Title
title_parts = code_a
# Looks like we have a series
if code_a and code_n:
# set title ("Name of this Book")
if code_p:
title_parts = [code_p[-1]]
# build series name
series_parts = [code_a[0]]
for i in range(0, min(len(code_p), len(code_n)) - 1):
series_parts.append(code_p[i])
for i in range(0, min(len(series_parts), len(code_n) - 1)):
series_parts[i] += ' ' + code_n[i]
book['series'] = ' - '.join(series_parts)
log.info("[245] Series: %s" % book['series'])
book['series'] = clean_series(log, book['series'],
book['publisher_name'] if self.cfg_skip_series_starting_with_publishers_name else None,
self.cfg_unwanted_series_names)
# build series index
if code_n:
book['series_index'] = code_n[-1]
log.info("[245] Series_Index: %s" % book['series_index'])
# subtitle 1: Field 245, Subfield b
try:
title_parts.append(field.xpath("./marc21:subfield[@code='b' and string-length(text())>0]", namespaces=ns)[0].text.strip())
except IndexError:
pass
book['title'] = " : ".join(title_parts)
log.info("[245] Title: %s" % book['title'])
book['title'] = clean_title(log, book['title'])
# Title_Sort
if title_parts:
title_sort_parts = list(title_parts)
try: # Python2
title_sort_regex = re.match(r'^(.*?)(' + unichr(152) + '.*' + unichr(156) + ')?(.*?)$', title_parts[0])
except: # Python3
title_sort_regex = re.match(r'^(.*?)(' + chr(152) + '.*' + chr(156) + ')?(.*?)$', title_parts[0])
sortword = title_sort_regex.group(2)
if sortword:
title_sort_parts[0] = ''.join(filter(None, [title_sort_regex.group(1).strip(), title_sort_regex.group(3).strip(), ", " + sortword]))
book['title_sort'] = " : ".join(title_sort_parts)
log.info("[245] Title_Sort: %s" % book['title_sort'])
##### Field 100: "Main Entry-Personal Name" #####
##### Field 700: "Added Entry-Personal Name" #####
# Get Authors ####
# primary authors
primary_authors = []
for i in record.xpath("./marc21:datafield[@tag='100']/marc21:subfield[@code='4' and text()='aut']/../marc21:subfield[@code='a' and string-length(text())>0]", namespaces=ns):
name = re.sub(r" \[.*\]$", "", i.text.strip())
primary_authors.append(name)
if primary_authors:
book['authors'].extend(primary_authors)
log.info("[100.a] Primary Authors: %s" % " & ".join(primary_authors))
# secondary authors
secondary_authors = []
for i in record.xpath("./marc21:datafield[@tag='700']/marc21:subfield[@code='4' and text()='aut']/../marc21:subfield[@code='a' and string-length(text())>0]", namespaces=ns):
name = re.sub(r" \[.*\]$", "", i.text.strip())
secondary_authors.append(name)
if secondary_authors:
book['authors'].extend(secondary_authors)
log.info("[700.a] Secondary Authors: %s" % " & ".join(secondary_authors))
# if no "real" author was found use all involved persons as authors
if not book['authors']:
involved_persons = []
for i in record.xpath("./marc21:datafield[@tag='700']/marc21:subfield[@code='a' and string-length(text())>0]", namespaces=ns):
name = re.sub(r" \[.*\]$", "", i.text.strip())
involved_persons.append(name)
if involved_persons:
book['authors'].extend(involved_persons)
log.info("[700.a] Involved Persons: %s" % " & ".join(involved_persons))
##### Field 856: "Electronic Location and Access" #####
# Get Comments, either from this book or from one of its other "Physical Forms"
# Field contains an URL to an HTML file with the comments
# Example: dnb-idn:1256023949
for x in [record] + book['alternative_xmls']:
try:
url = x.xpath("./marc21:datafield[@tag='856']/marc21:subfield[@code='u' and string-length(text())>21]", namespaces=ns)[0].text.strip()
if url.startswith("http://deposit.dnb.de/") or url.startswith("https://deposit.dnb.de/"):
br = self.browser
log.info('[856.u] Trying to download Comments from: %s' % url)
try:
comments = br.open_novisit(url, timeout=30).read()
# Decode bytes to string for processing
comments_text = comments.decode('utf-8')
# Skip service outage information web page
if 'Zugriff derzeit nicht möglich // Access currently unavailable' in comments_text:
raise Exception("Access currently unavailable")
# Process the text version
comments_text = re.sub(
r'(\s|<br>|<p>|\n)*Angaben aus der Verlagsmeldung(\s|<br>|<p>|\n)*(<h3>.*?</h3>)*(\s|<br>|<p>|\n)*',
'', comments_text, flags=re.IGNORECASE)
book['comments'] = sanitize_comments_html(comments_text)
log.info('[856.u] Got Comments: %s' % book['comments'])
break
except Exception as e:
log.info("[856.u] Could not download Comments from %s: %s" % (url, e))
except IndexError:
pass
##### Field 24: "Other Standard Identifier" #####
# Get Identifier "URN"
for i in record.xpath("./marc21:datafield[@tag='024']/marc21:subfield[@code='2' and text()='urn']/../marc21:subfield[@code='a' and string-length(text())>0]", namespaces=ns):
try:
urn = i.text.strip()
match = re.search(r"^urn:(.+)$", urn)
book['urn'] = match.group(1)
log.info("[024.a] Identifier URN: %s" % book['urn'])
break
except AttributeError:
pass
##### Field 20: "International Standard Book Number" #####
# Get Identifier "ISBN"
for i in record.xpath("./marc21:datafield[@tag='020']/marc21:subfield[@code='a' and string-length(text())>0]", namespaces=ns):
try:
isbn_regex = "(?:ISBN(?:-1[03])?:? )?(?=[-0-9 ]{17}|[-0-9X ]{13}|[0-9X]{10})(?:97[89][- ]?)?[0-9]{1,5}[- ]?(?:[0-9]+[- ]?){2}[0-9X]"
match = re.search(isbn_regex, i.text.strip())
isbn = match.group()
book['isbn'] = isbn.replace('-', '')
log.info("[020.a] Identifier ISBN: %s" % book['isbn'])
break
except AttributeError:
pass
##### Field 82: "Dewey Decimal Classification Number" #####
# Get Identifier "Sachgruppen (DDC)" (ddc)
for i in record.xpath("./marc21:datafield[@tag='082']/marc21:subfield[@code='a' and string-length(text())>0]", namespaces=ns):
book['ddc'].append(i.text.strip())
if book['ddc']:
log.info("[082.a] Indentifiers DDC: %s" % ",".join(book['ddc']))
# Field 490: "Series Statement"
# Get Series and Series_Index
# In theory book series are in field 830, but sometimes they are in 490, 246, 800 or nowhere
# So let's look here if we could not extract series/series_index from 830 above properly
# Subfields:
# v: Series name and index
# a: Series name
for i in record.xpath("./marc21:datafield[@tag='490']/marc21:subfield[@code='v' and string-length(text())>0]/../marc21:subfield[@code='a' and string-length(text())>0]/..", namespaces=ns):
if book['series'] and book['series_index'] and book['series_index'] != "0":
break
series = None
series_index = None
# "v" is something like "Nr. 220", "220", "This great Seriestitle : Nr. 220", "Bd. 220, Abth. 1 = [1]"
attr_v = i.xpath("./marc21:subfield[@code='v']", namespaces=ns)[0].text.strip()
# Assume we have "This great Seriestitle : Nr. 220"
# -> Split at " : ", the part without digits is the series, the digits in the other part are the series_index
parts = re.split(" : ", attr_v)
if len(parts) == 2:
if bool(re.search(r"\d", parts[0])) != bool(re.search(r"\d", parts[1])):
# figure out which part contains the index number
if bool(re.search(r"\d", parts[0])):
indexpart = parts[0]
textpart = parts[1]
else:
indexpart = parts[1]
textpart = parts[0]
match = re.search(r"^.*?(\d+[\.,]?(?:(?<=[\.,])\d*)?)", indexpart)
if match:
series_index = match.group(1)
series = textpart.strip()
log.info("[490.v] Series: %s" % series)
log.info("[490.v] Series_Index: %s" % series_index)
else:
# Assumption above was wrong. Try to extract at least the series_index
match = re.search(r"^.*?(\d+[\.,]?(?:(?<=[\.,])\d*)?)", attr_v)
if match:
series_index = match.group(1)
log.info("[490.v] Series_Index: %s" % series_index)
# Use Series Name from attribute "a" if not already found in attribute "v"
if not series:
series = i.xpath("./marc21:subfield[@code='a']", namespaces=ns)[0].text.strip()
log.info("[490.a] Series: %s" % series)
if series:
series = clean_series(log, series,
book['publisher_name'] if self.cfg_skip_series_starting_with_publishers_name else None,
self.cfg_unwanted_series_names)
if series and series_index:
book['series'] = series
book['series_index'] = series_index
##### Field 246: "Varying Form of Title" #####
# Series and Series_Index
for i in record.xpath("./marc21:datafield[@tag='246']/marc21:subfield[@code='a' and string-length(text())>0]", namespaces=ns):
if book['series'] and book['series_index'] and book['series_index'] != "0":
break
match = re.search(r"^(.+?) ; (\d+[\.,]?(?:(?<=[\.,])\d*)?)$", i.text.strip())
if match:
series = match.group(1)
series_index = match.group(2)
log.info("[246.a] Series: %s" % series)
log.info("[246.a] Series_Index: %s" % book['series_index'])
series = clean_series(log, match.group(1),
book['publisher_name'] if self.cfg_skip_series_starting_with_publishers_name else None,
self.cfg_unwanted_series_names)
if series and series_index:
book['series'] = series
book['series_index'] = series_index
##### Field 800: "Series Added Entry-Personal Name" #####
# Series and Series_Index
for i in record.xpath("./marc21:datafield[@tag='800']/marc21:subfield[@code='v' and string-length(text())>0]/../marc21:subfield[@code='t' and string-length(text())>0]/..", namespaces=ns):
if book['series'] and book['series_index'] and book['series_index'] != "0":
break
# Series Index
match = re.search(r"^.*?(\d+[\.,]?(?:(?<=[\.,])\d*)?)", i.xpath("./marc21:subfield[@code='v']", namespaces=ns)[0].text.strip())
if match:
series_index = match.group(1)
log.info("[800.v] Series_Index: %s" % series_index)
# Series
series = i.xpath("./marc21:subfield[@code='t']", namespaces=ns)[0].text.strip()
log.info("[800.t] Series: %s" % series)
series = clean_series(log, series,
book['publisher_name'] if self.cfg_skip_series_starting_with_publishers_name else None,
self.cfg_unwanted_series_names)
if series and series_index:
book['series'] = series
book['series_index'] = series_index
##### Field 830: "Series Added Entry-Uniform Title" #####
# Series and Series_Index
for i in record.xpath("./marc21:datafield[@tag='830']/marc21:subfield[@code='v' and string-length(text())>0]/../marc21:subfield[@code='a' and string-length(text())>0]/..", namespaces=ns):
if book['series'] and book['series_index'] and book['series_index'] != "0":
break
# Series Index
match = re.search(r"^.*?(\d+[\.,]?(?:(?<=[\.,])\d*)?)", i.xpath("./marc21:subfield[@code='v']", namespaces=ns)[0].text.strip())
if match:
series_index = match.group(1)
log.info("[830.v] Series_Index: %s" % series_index)
# Series
series = i.xpath("./marc21:subfield[@code='a']", namespaces=ns)[0].text.strip()
log.info("[830.a] Series: %s" % series)
series = clean_series(log, series,
book['publisher_name'] if self.cfg_skip_series_starting_with_publishers_name else None,
self.cfg_unwanted_series_names)
if series and series_index:
book['series'] = series
book['series_index'] = series_index
##### Field 689 #####
# Get GND Subjects
for i in record.xpath("./marc21:datafield[@tag='689']/marc21:subfield[@code='a' and string-length(text())>0]", namespaces=ns):
book['subjects_gnd'].append(i.text.strip())
for f in range(600, 656):
for i in record.xpath("./marc21:datafield[@tag='" + str(f) + "']/marc21:subfield[@code='2' and text()='gnd']/../marc21:subfield[@code='a' and string-length(text())>0]", namespaces=ns):
# skip entries starting with "(":
if i.text.startswith("("):
continue
book['subjects_gnd'].append(i.text)
if book['subjects_gnd']:
log.info("[689.a] GND Subjects: %s" % " ".join(book['subjects_gnd']))
##### Fields 600-655 #####
# Get non-GND Subjects
for f in range(600, 656):
for i in record.xpath("./marc21:datafield[@tag='" + str(f) + "']/marc21:subfield[@code='a' and string-length(text())>0]", namespaces=ns):
# skip entries starting with "(":
if i.text.startswith("("):
continue
# skip one-character subjects:
if len(i.text) < 2:
continue
book['subjects_non_gnd'].extend(re.split(',|;', remove_sorting_characters(i.text)))
if book['subjects_non_gnd']:
log.info("[600.a-655.a] Non-GND Subjects: %s" % " ".join(book['subjects_non_gnd']))
##### Field 250: "Edition Statement" #####
# Get Edition
try:
book['edition'] = record.xpath("./marc21:datafield[@tag='250']/marc21:subfield[@code='a' and string-length(text())>0]", namespaces=ns)[0].text.strip()
log.info("[250.a] Edition: %s" % book['edition'])
except IndexError:
pass
##### Field 41: "Language Code" #####
# Get Languages (unfortunately in ISO-639-2/B ("ger" for German), while Calibre uses ISO-639-1 ("de"))
# ISO-639-2/B is very close to ISO-639-3, which can be converted to ISO-639-1 with Calibre's "lang_as_iso639_1" function
# So we translate ISO-639-2/B to ISO-639-3 and feed that to Calibre
for i in record.xpath("./marc21:datafield[@tag='041']/marc21:subfield[@code='a' and string-length(text())>0]", namespaces=ns):
book['languages'].append(
lang_as_iso639_1(
iso639_2b_as_iso639_3(i.text.strip())
)
)
try:
if book['languages']:
log.info("[041.a] Languages: %s" % ",".join(book['languages']))
except TypeError:
pass
##### SERIES GUESSER #####
# DNB's metadata often lacks proper series/series_index data
# If wanted by user: Try to retrieve Series, Series Index and "real" Title from the fetched Title
if self.cfg_guess_series is True and not book['series'] or not book['series_index'] or book['series_index'] == "0":
try:
(guessed_title, guessed_series, guessed_series_index) = guess_series_from_title(log, book['title'])
guessed_title = clean_title(log, guessed_title)
guessed_series = clean_series(log, guessed_series,
book['publisher_name'] if self.cfg_skip_series_starting_with_publishers_name else None,
self.cfg_unwanted_series_names)
if guessed_title and guessed_series and guessed_series_index:
book['title'] = guessed_title
book['series'] = guessed_series
book['series_index'] = guessed_series_index
except TypeError:
pass
##### Figure out working URL to cover #####
# Cover URL is basically fixed and takes ISBN as an argument
# So get all ISBNs we have for this book...
cover_isbns = [ book['isbn'] ]
# loop through all alternative "physical forms"
for altxml in book['alternative_xmls']:
for identifier in altxml.xpath("./marc21:datafield[@tag='020']/marc21:subfield[@code='a' and string-length(text())>0]", namespaces=ns):
try:
isbn_regex = "(?:ISBN(?:-1[03])?:? )?(?=[-0-9 ]{17}|[-0-9X ]{13}|[0-9X]{10})(?:97[89][- ]?)?[0-9]{1,5}[- ]?(?:[0-9]+[- ]?){2}[0-9X]"
match = re.search(isbn_regex, identifier.text.strip())
isbn = match.group()
isbn = isbn.replace('-', '')
log.info("[020.a ALTERNATE] Identifier ISBN: %s" % isbn)
cover_isbns.append(isbn)
self.cache_isbn_to_identifier(isbn, book['idn'])
break
except AttributeError:
pass
# ...and check for each ISBN if the server has a cover
for i in cover_isbns:
url = self.COVERURL % i
request = Request(url)
request.get_method = lambda : 'HEAD'
try:
urlopen(request)
self.cache_identifier_to_cover_url(book['idn'], url)
break
except HTTPError:
continue
##### Put it all together #####
if self.cfg_append_edition_to_title and book['edition']:
book['title'] = book['title'] + " : " + book['edition']
authors = list(map(lambda i: remove_sorting_characters(i), book['authors']))
mi = Metadata(
remove_sorting_characters(book['title']),
list(map(lambda i: re.sub(r"^(.+), (.+)$", r"\2 \1", i), authors))
)
mi.author_sort = " & ".join(authors)
mi.title_sort = remove_sorting_characters(book['title_sort'])
if book['languages']:
mi.language = book['languages'][0]
mi.languages = book['languages']
mi.pubdate = book['pubdate']
mi.publisher = " ; ".join(filter(
None, [book['publisher_location'], remove_sorting_characters(book['publisher_name'])]))
if book['series']:
mi.series = remove_sorting_characters(book['series'].replace(',', '.'))
mi.series_index = book['series_index'] or "0"
mi.comments = book['comments']
mi.has_cover = self.cached_identifier_to_cover_url(book['idn']) is not None
mi.isbn = book['isbn']
mi.set_identifier('urn', book['urn'])
mi.set_identifier('dnb-idn', book['idn'])
mi.set_identifier('ddc', ",".join(book['ddc']))
# cfg_subjects:
# 0: use only subjects_gnd
if self.cfg_fetch_subjects == 0:
mi.tags = uniq(book['subjects_gnd'])
# 1: use only subjects_gnd if found, else subjects_non_gnd
elif self.cfg_fetch_subjects == 1:
if book['subjects_gnd']:
mi.tags = uniq(book['subjects_gnd'])
else:
mi.tags = uniq(book['subjects_non_gnd'])
# 2: subjects_gnd and subjects_non_gnd
elif self.cfg_fetch_subjects == 2:
mi.tags = uniq(book['subjects_gnd'] + book['subjects_non_gnd'])
# 3: use only subjects_non_gnd if found, else subjects_gnd
elif self.cfg_fetch_subjects == 3:
if book['subjects_non_gnd']:
mi.tags = uniq(book['subjects_non_gnd'])
else:
mi.tags = uniq(book['subjects_gnd'])
# 4: use only subjects_non_gnd
elif self.cfg_fetch_subjects == 4:
mi.tags = uniq(book['subjects_non_gnd'])
# 5: use no subjects at all
elif self.cfg_fetch_subjects == 5:
mi.tags = []
# put current result's metdata into result queue
log.info("Final formatted result: \n%s\n-----" % mi)
result_queue.put(mi)
query_success = True
# Stop on first successful query
if query_success:
break
def download_cover(self, log, result_queue, abort, title=None, authors=None, identifiers=None, timeout=30, get_best_cover=False):
"""
Download Cover image
gets called directly from Calibre
"""
if identifiers is None:
identifiers = {}
cached_url = self.get_cached_cover_url(identifiers)
if cached_url is None:
log.info('No cached cover found, running identify')
rq = Queue()
self.identify(log, rq, abort, title=title,
authors=authors, identifiers=identifiers)
if abort.is_set():
return
results = []
while True:
try:
results.append(rq.get_nowait())
except Empty:
break
results.sort(key=self.identify_results_keygen(
title=title, authors=authors, identifiers=identifiers))
for mi in results:
cached_url = self.get_cached_cover_url(mi.identifiers)
if cached_url is not None:
break
if not cached_url:
log.info('No cover found')
return None
if abort.is_set():
return
br = self.browser
log('Downloading cover from:', cached_url)
try:
cdata = br.open_novisit(cached_url, timeout=timeout).read()
result_queue.put((self, cdata))
except Exception as e:
log.info("Could not download Cover, ERROR %s" % e)
def create_query_variations(self, log, idn=None, isbn=None, authors=None, title=None):
"""
Create a number of SRU query variations, with increasing fuzziness
"""
if authors is None:
authors = []
queries = []
if idn:
# if IDN is given only search for the IDN and skip all the other stuff
queries.append('num=' + idn)
elif isbn:
# if ISBN is given only search for the ISBN and skip all the other stuff
queries.append('num=' + isbn)
else:
# create some variations of given authors
authors_v = []
if len(authors) > 0:
# simply use all authors
for a in authors:
authors_v.append(authors)
# use all authors, one by one
if len(authors) > 1:
for a in authors:
authors_v.append([a])
# create some variations of given title
title_v = []
if title:
# simply use given title
title_v.append([ title ])
# remove some punctation characters
title_v.append([ ' '.join(self.get_title_tokens(
title, strip_joiners=False, strip_subtitle=False))] )
# remove some punctation characters, joiners ("and", "und", "&", ...), leading zeros, and single non-word characters
title_v.append([x.lstrip('0') for x in strip_german_joiners(self.get_title_tokens(
title, strip_joiners=True, strip_subtitle=False)) if (len(x)>1 or x.isnumeric())])
# remove subtitle (everything after " : ")
title_v.append([ ' '.join(self.get_title_tokens(
title, strip_joiners=False, strip_subtitle=True))] )
# remove subtitle (everything after " : "), joiners ("and", "und", "&", ...), leading zeros, and single non-word characters
title_v.append([x.lstrip('0') for x in strip_german_joiners(self.get_title_tokens(
title, strip_joiners=True, strip_subtitle=True)) if (len(x)>1 or x.isnumeric())])
## create queries
# title and author given:
if authors_v and title_v:
# try with title and all authors
queries.append('tst="%s" AND %s' % (
title,
" AND ".join(list(map(lambda x: 'per="%s"' % x, authors))),
))
# try with cartiesian product of all authors and title variations created above
for a in authors_v:
for t in title_v:
queries.append(
" AND ".join(
list(map(lambda x: 'tit="%s"' % x.lstrip('0'), t)) +
list(map(lambda x: 'per="%s"' % x, a))
))
# try with first author as title and title (without subtitle) as author
queries.append('per="%s" AND tit="%s"' % (
' '.join(x.lstrip('0') for x in self.get_title_tokens(title, strip_joiners=True, strip_subtitle=True)),
' '.join(self.get_author_tokens(authors, only_first_author=True))
))
# try with first author and title (without subtitle) in any index
queries.append(
' AND '.join(list(map(lambda x: '"%s"' % x, [
" ".join(x.lstrip('0') for x in self.get_title_tokens(title, strip_joiners=True, strip_subtitle=True)),
" ".join(self.get_author_tokens(authors, only_first_author=True))
])))
)
# try with first author and splitted title words (without subtitle) in any index
queries.append(
' AND '.join(list(map(lambda x: '"%s"' % x.lstrip('0'),
list(x.lstrip('0') for x in strip_german_joiners(self.get_title_tokens(title, strip_joiners=True, strip_subtitle=True)))
+ list(self.get_author_tokens(authors, only_first_author=True))
)))
)
# authors given but no title
elif authors_v and not title_v:
# try with all authors as authors
for a in authors_v:
queries.append(" AND ".join(list(map(lambda x: 'per="%s"' % x, a))))
# try with first author as author
queries.append('per="' + ' '.join(self.get_author_tokens(authors, only_first_author=True)) + '"')
# try with first author as title
queries.append('tit="' + ' '.join(x.lstrip('0') for x in self.get_author_tokens(authors, only_first_author=True)) + '"')
# title given but no author
elif not authors_v and title_v:
# try with title as title
for t in title_v:
queries.append(
" AND ".join(list(map(lambda x: 'tit="%s"' % x.lstrip('0'), t)))
)
# try with title as author
queries.append('per="' + ' '.join(self.get_title_tokens(title, strip_joiners=True, strip_subtitle=True)) + '"')
# try with title (without subtitle) in any index
queries.append(
' AND '.join(list(map(lambda x: '"%s"' % x, [
" ".join(x.lstrip('0') for x in self.get_title_tokens(title, strip_joiners=True, strip_subtitle=True))
])))
)
# remove duplicate queries (while keeping the order)
uniqueQueries = []
for i in queries:
if i not in uniqueQueries:
uniqueQueries.append(i)
if isbn:
uniqueQueries = [ i + ' AND num=' + isbn for i in uniqueQueries ]
# do not search in films, music, microfiches or audiobooks
uniqueQueries = [ i + ' NOT (mat=film OR mat=music OR mat=microfiches OR cod=tt)' for i in uniqueQueries ]
return uniqueQueries
def execute_query(self, log, query, timeout=30):
"""
Query DNB SRU API
"""
# SRU does not work with "+" or "?" characters in query, so we simply remove them
query = re.sub(r"[\+\?]", '', query)
log.info('Query String: %s' % query)
queryUrl = self.QUERYURL % (self.MAXIMUMRECORDS, quote(query.encode('utf-8')))
log.info('Query URL: %s' % queryUrl)
xmlData = None
try:
data = self.browser.open_novisit(queryUrl, timeout=timeout).read()
# "data" is of type "bytes", decode it to an utf-8 string, normalize the UTF-8 encoding (from decomposed to composed), and convert it back to bytes
data = normalize(data.decode('utf-8')).encode('utf-8')
#log.info('Got some data : %s' % data)
xmlData = etree.XML(data)
#log.info(etree.tostring(xmlData,pretty_print=True))
numOfRecords = xmlData.xpath("./zs:numberOfRecords", namespaces={"zs": "http://www.loc.gov/zing/srw/"})[0].text.strip()
log.info('Got records: %s' % numOfRecords)
if int(numOfRecords) == 0:
return None
return xmlData.xpath("./zs:records/zs:record/zs:recordData/marc21:record", namespaces={'marc21': 'http://www.loc.gov/MARC21/slim', "zs": "http://www.loc.gov/zing/srw/"})
except:
try:
diag = ": ".join([
xmlData.find('diagnostics/diag:diagnostic/diag:details', namespaces={
None: 'http://www.loc.gov/zing/srw/', 'diag': 'http://www.loc.gov/zing/srw/diagnostic/'}).text,
xmlData.find('diagnostics/diag:diagnostic/diag:message', namespaces={
None: 'http://www.loc.gov/zing/srw/', 'diag': 'http://www.loc.gov/zing/srw/diagnostic/'}).text
])
log.error('ERROR: %s' % diag)
return None
except:
log.error('ERROR: Got invalid response:')
log.error(data)
return None
def get_cached_cover_url(self, identifiers):
"""
Create URL to cover image
"""
url = None
idn = identifiers.get('dnb-idn', None)
if idn is None: