py3: Port urllib in metadata sources

src/calibre/ebooks/metadata/sources/amazon.py

@@ -12,6 +12,9 @@ try:
 except ImportError:
     from Queue import Empty, Queue
 from threading import Thread
+try:
+    from urllib.parse import urlparse
+except ImportError:
     from urlparse import urlparse
 
 from calibre import as_unicode, browser, random_user_agent
@@ -579,6 +582,9 @@ class Worker(Thread):  # Get details {{{
         return sanitize_comments_html(desc)
 
     def parse_comments(self, root, raw):
+        try:
+            from urllib.parse import unquote
+        except ImportError:
             from urllib import unquote
         ans = ''
         ns = tuple(self.selector('#bookDescription_feature_div noscript'))
@@ -1048,6 +1054,9 @@ class Amazon(Source):
 
     def create_query(self, log, title=None, authors=None, identifiers={},  # {{{
                      domain=None, for_amazon=True):
+        try:
+            from urllib.parse import urlencode
+        except ImportError:
             from urllib import urlencode
         if domain is None:
             domain = self.domain

src/calibre/ebooks/metadata/sources/big_book_search.py

@@ -11,6 +11,9 @@ from calibre.ebooks.metadata.sources.base import Source, Option
 
 
 def get_urls(br, tokens):
+    try:
+        from urllib.parse import quote_plus
+    except ImportError:
         from urllib import quote_plus
     from mechanize import Request
     from lxml import html

src/calibre/ebooks/metadata/sources/douban.py

@@ -178,6 +178,9 @@ class Douban(Source):
     # }}}
 
     def create_query(self, log, title=None, authors=None, identifiers={}):  # {{{
+        try:
+            from urllib.parse import urlencode
+        except ImportError:
             from urllib import urlencode
         SEARCH_URL = 'https://api.douban.com/book/subjects?'
         ISBN_URL = 'https://api.douban.com/book/subject/isbn/'

src/calibre/ebooks/metadata/sources/edelweiss.py

@@ -234,6 +234,9 @@ class Edelweiss(Source):
     # }}}
 
     def create_query(self, log, title=None, authors=None, identifiers={}):
+        try:
+            from urllib.parse import urlencode
+        except ImportError:
             from urllib import urlencode
         import time
         BASE_URL = ('https://www.edelweiss.plus/GetTreelineControl.aspx?'

src/calibre/ebooks/metadata/sources/google.py

@@ -199,6 +199,9 @@ class GoogleBooks(Source):
     # }}}
 
     def create_query(self, log, title=None, authors=None, identifiers={}):  # {{{
+        try:
+            from urllib.parse import urlencode
+        except ImportError:
             from urllib import urlencode
         BASE_URL = 'https://books.google.com/books/feeds/volumes?'
         isbn = check_isbn(identifiers.get('isbn', None))

src/calibre/ebooks/metadata/sources/google_images.py

@@ -65,6 +65,9 @@ class GoogleImages(Source):
 
     def get_image_urls(self, title, author, log, abort, timeout):
         from calibre.utils.cleantext import clean_ascii_chars
+        try:
+            from urllib.parse import urlencode
+        except ImportError:
             from urllib import urlencode
         import json
         from collections import OrderedDict

src/calibre/ebooks/metadata/sources/identify.py

@@ -12,8 +12,7 @@ from datetime import datetime
 from threading import Thread
 from io import BytesIO
 from operator import attrgetter
-from urlparse import urlparse
-from urllib import quote
+from polyglot.urllib import urlparse, quote
 
 from calibre.customize.ui import metadata_plugins, all_metadata_plugins
 from calibre.ebooks.metadata import check_issn, authors_to_sort_string

src/calibre/ebooks/metadata/sources/ozon.py

@@ -57,12 +57,15 @@ class Ozon(Source):
     )
 
     def get_book_url(self, identifiers):  # {{{
-        import urllib2
+        try:
+            from urllib.parse import quote
+        except ImportError:
+            from urllib import quote
         ozon_id = identifiers.get('ozon', None)
         res = None
         if ozon_id:
             # no affiliateId is used in search/detail
-            url = '{}/context/detail/id/{}'.format(self.ozon_url, urllib2.quote(ozon_id), _get_affiliateId())
+            url = '{}/context/detail/id/{}'.format(self.ozon_url, quote(ozon_id), _get_affiliateId())
             res = ('ozon', ozon_id, url)
         return res
 

src/calibre/ebooks/metadata/sources/search_engines.py

@@ -8,8 +8,11 @@ import json
 import re
 import time
 from collections import defaultdict, namedtuple
-from urllib import quote_plus, urlencode
+try:
+    from urllib.parse import parse_qs, quote_plus, urlencode
+except ImportError:
     from urlparse import parse_qs
+    from urllib import quote_plus, urlencode
 
 from lxml import etree