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More efficient cover checking

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This commit is contained in:
Kovid Goyal 2010-06-25 15:15:46 -06:00
parent ffd3b62049
commit b2f16f291e
2 changed files with 14 additions and 10 deletions
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14
src/calibre/ebooks/metadata/fetch.py
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@ -3,14 +3,14 @@ __license__ = 'GPL 3'
__copyright__ = '2009, Kovid Goyal <kovid@kovidgoyal.net>' __copyright__ = '2009, Kovid Goyal <kovid@kovidgoyal.net>'
__docformat__ = 'restructuredtext en' __docformat__ = 'restructuredtext en'
import traceback, sys, textwrap, re, urllib2 import traceback, sys, textwrap, re
from threading import Thread from threading import Thread
from calibre import prints, browser from calibre import prints
from calibre.utils.config import OptionParser from calibre.utils.config import OptionParser
from calibre.utils.logging import default_log from calibre.utils.logging import default_log
from calibre.customize import Plugin from calibre.customize import Plugin
from calibre.ebooks.metadata.library_thing import OPENLIBRARY from calibre.ebooks.metadata.library_thing import check_for_cover
metadata_config = None metadata_config = None
@ -271,16 +271,10 @@ def filter_metadata_results(item):
return False return False
return True return True
class HeadRequest(urllib2.Request):
def get_method(self):
return "HEAD"
def do_cover_check(item): def do_cover_check(item):
opener = browser()
item.has_cover = False item.has_cover = False
try: try:
opener.open(HeadRequest(OPENLIBRARY%item.isbn), timeout=5) item.has_cover = check_for_cover(item.isbn)
item.has_cover = True
except: except:
pass # Cover not found pass # Cover not found

10
src/calibre/ebooks/metadata/library_thing.py
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@ -14,6 +14,16 @@ from calibre.ebooks.BeautifulSoup import BeautifulSoup
OPENLIBRARY = 'http://covers.openlibrary.org/b/isbn/%s-L.jpg?default=false' OPENLIBRARY = 'http://covers.openlibrary.org/b/isbn/%s-L.jpg?default=false'
def check_for_cover(isbn):
br = browser()
br.set_handle_redirect(False)
try:
br.open_novisit(OPENLIBRARY%isbn)
except Exception, e:
if callable(getattr(e, 'getcode', None)) and e.getcode() == 302:
return True
return False
class LibraryThingError(Exception): class LibraryThingError(Exception):
pass pass