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-rw-r--r--youtube_dl/utils.py31
1 files changed, 27 insertions, 4 deletions
diff --git a/youtube_dl/utils.py b/youtube_dl/utils.py
index 3a2f0022f..6c5b5df4c 100644
--- a/youtube_dl/utils.py
+++ b/youtube_dl/utils.py
@@ -586,7 +586,29 @@ def unified_strdate(date_str):
return upload_date
def date_from_str(date_str):
- """Return a datetime object from a string in the format YYYYMMDD"""
+ """
+ Return a datetime object from a string in the format YYYYMMDD or
+ (now|today)[+-][0-9](day|week|month|year)(s)?"""
+ today = datetime.date.today()
+ if date_str == 'now'or date_str == 'today':
+ return today
+ match = re.match('(now|today)(?P<sign>[+-])(?P<time>\d+)(?P<unit>day|week|month|year)(s)?', date_str)
+ if match is not None:
+ sign = match.group('sign')
+ time = int(match.group('time'))
+ if sign == '-':
+ time = -time
+ unit = match.group('unit')
+ #A bad aproximation?
+ if unit == 'month':
+ unit = 'day'
+ time *= 30
+ elif unit == 'year':
+ unit = 'day'
+ time *= 365
+ unit += 's'
+ delta = datetime.timedelta(**{unit: time})
+ return today + delta
return datetime.datetime.strptime(date_str, "%Y%m%d").date()
class DateRange(object):
@@ -601,7 +623,7 @@ class DateRange(object):
self.end = date_from_str(end)
else:
self.end = datetime.datetime.max.date()
- if self.start >= self.end:
+ if self.start > self.end:
raise ValueError('Date range: "%s" , the start date must be before the end date' % self)
@classmethod
def day(cls, day):
@@ -609,7 +631,8 @@ class DateRange(object):
return cls(day,day)
def __contains__(self, date):
"""Check if the date is in the range"""
- date = date_from_str(date)
- return self.start <= date and date <= self.end
+ if not isinstance(date, datetime.date):
+ date = date_from_str(date)
+ return self.start <= date <= self.end
def __str__(self):
return '%s - %s' % ( self.start.isoformat(), self.end.isoformat())