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utility function to generate datetime from date strings such that the year and month are always correct

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Kovid Goyal 2012-05-13 17:24:34 +05:30
parent 4a2de2c905
commit d49d82305f
2 changed files with 22 additions and 2 deletions
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4
src/calibre/ebooks/metadata/sources/amazon.py
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@ -18,7 +18,7 @@ from calibre.ebooks.metadata import check_isbn
from calibre.ebooks.metadata.sources.base import (Source, Option, fixcase,
fixauthors)
from calibre.ebooks.metadata.book.base import Metadata
from calibre.utils.date import parse_date
from calibre.utils.date import parse_only_date
from calibre.utils.localization import canonicalize_lang
class Worker(Thread): # Get details {{{
@ -471,7 +471,7 @@ class Worker(Thread): # Get details {{{
ans = x.tail
date = ans.rpartition('(')[-1].replace(')', '').strip()
date = self.delocalize_datestr(date)
return parse_date(date, assume_utc=True)
return parse_only_date(date, assume_utc=True)
def parse_language(self, pd):
for x in reversed(pd.xpath(self.language_xpath)):

20
src/calibre/utils/date.py
View File

@ -82,6 +82,26 @@ def parse_date(date_string, assume_utc=False, as_utc=True, default=None):
dt = dt.replace(tzinfo=_utc_tz if assume_utc else _local_tz)
return dt.astimezone(_utc_tz if as_utc else _local_tz)
def parse_only_date(raw, assume_utc=True):
'''
Parse a date string that contains no time information in a manner that
guarantees that the month and year are always correct in all timezones, and
the day is at most one day wrong.
'''
from calibre.utils.date import utcnow, now, parse_date
from datetime import timedelta
f = utcnow if assume_utc else now
default = f().replace(hour=0, minute=0, second=0, microsecond=0,
day=15)
ans = parse_date(raw, default=default, assume_utc=assume_utc)
n = ans + timedelta(days=1)
if n.month > ans.month:
ans = ans.replace(day=ans.day-1)
if ans.day == 1:
ans = ans.replace(day=2)
return ans
def strptime(val, fmt, assume_utc=False, as_utc=True):
dt = datetime.strptime(val, fmt)
if dt.tzinfo is None: