def _incremental_update(self, request):
# Get the time of the last sync
last_sync = request.POST.get('last_sync', None)
if last_sync is not None:
# If last_sync was in the POST data
try:
# Convert the last time the client synced with the database into DateTime
time = utils.parseDateTime(last_sync)
except ValueError:
# If the conversion failed
self.data['meta']['error'] = "last_sync was not in the format YYYY-MM-DD HH:MM:SS"
return None
else:
# If the conversion was successfull
# Get all updates for the current user since that time
return Update.objects.filter(user=self.user, time__gte=last_sync).order_by('-time')
else:
# If the last sync time was not found, return an error
self.data['meta']['error'] = "last_sync time not found"
return
def __init__(self, url):
# try:
xml = unicode(urlopen(url).read(), errors='ignore')
self.soup = BeautifulStoneSoup(xml)
# except (HTTPError, URLError, httplib.BadStatusLine, httplib.InvalidURL, ValueError, IOError):
# return None
if self.soup is not None:
self.status = True
entry = self.soup
author = entry.find('dc:creator')
self.author = unescape(author.string) if author is not None else None
date = entry.find('dc:date')
if date is not None:
dateString = ''
if re.match('^[0-9][0-9][0-9][0-9]$', date.string): dateString = date.string + '-01-01 00:00:00'
elif re.match('^[0-9][0-9][0-9][0-9]-[0-9][0-9]$', date.string): dateString = date.string + '-01 00:00:00'
elif re.match('^[0-9][0-9][0-9][0-9]-[0-9][0-9]-[0-9][0-9]$', date.string): dateString = date.string + ' 00:00:00'
self.published = utils.parseDateTime(dateString)
else:
self.published = None
description = entry.find('dc:description')
self.description = unescape(description.string) if description is not None else None
self.width = self.height = self.depth = self.pages = self.format = None
try:
for format in entry.findAll('dc:format'):
if format.string.startswith('Dimensions'):
dimensions = format.string.split(' ')[1]
dimensions = dimensions.split('x')
self.width = float(dimensions[0])
self.height = float(dimensions[1])
self.depth = float(dimensions[2])
elif re.match('[0-9]', format.string):
self.pages = int(format.string.split(' ')[0])
else:
self.format = unescape(format.string)
except IndexError:
# Some dimensions are not present
pass
identifiers = entry.findAll('dc:identifier')
self.googleid = identifiers[0].string
self.isbn10 = self.isbn13 = None
for identifier in identifiers[1:]:
if identifier.string.startswith('ISBN:'):
isbn = identifier.string.lstrip('ISBN:')
if len(isbn) == 10:
self.isbn10 = isbn
elif len(isbn) == 13:
self.isbn13 = isbn
else:
# ERROR: It's an ISBN but is not 10 or 13 digits long
pass
language = entry.find('dc:language')
self.language = language.string if language is not None else None
publisher = entry.find('dc:publisher')
self.publisher = unescape(publisher.string) if publisher is not None else None
self.thumbnail_base = None
self.thumbnail_huge = None
self.thumbnail_small = None
self.thumbnail_large = None
# Thubnail
for link in entry.findAll('link'):
if link['rel'] == self.THUMBNAIL_REL:
url = httplib.urlsplit(unescape(link['href']))
self.thumbnail_base = url.scheme + '://' + url.netloc + url.path + '?id=' + self.googleid + '&printsec=frontcover&img=1&zoom='
self.thumbnail_large = self.thumbnail_base + '1'
self.thumbnail_small = self.thumbnail_base + '5'
self.thumbnail_huge = self.thumbnail_base + '0'
self.subjects = []
for subject in entry.findAll('dc:subject'):
self.subjects.append(unescape(subject.string))
title = entry.find('dc:title')
self.title = unescape(title.string) if title is not None else None
else:
self.status = False