Update of /cvsroot/webware/Webware/MiscUtils
In directory usw-pr-cvs1:/tmp/cvs-serv24997/MiscUtils
Added Files:
DateInterval.py
Log Message:
Enhanced the setCookie method in HTTPResponse.
--- NEW FILE: DateInterval.py ---
"""
DateInterval.py
Convert interval strings (in the form of 1w2d, etc) to
seconds, and back again. Is not exactly about months or
years (leap years in particular).
Accepts (y)ear, (b)month, (w)eek, (d)ay, (h)our, (m)inute, (s)econd.
Exports only timeEncode and timeDecode functions.
"""
import re
second = 1
minute = second*60
hour = minute*60
day = hour*24
week = day*7
month = day*30
year = day*365
timeValues = {
'y': year,
'b': month,
'w': week,
'd': day,
'h': hour,
'm': minute,
's': second,
}
timeOrdered = timeValues.items()
timeOrdered.sort(lambda a, b: -cmp(a[1], b[1]))
def timeEncode(seconds):
"""Encodes a number of seconds (representing a time interval)
into a form like 1h2d3s."""
s = ''
for char, amount in timeOrdered:
if seconds >= amount:
i, seconds = divmod(seconds, amount)
s += '%i%s' % (i, char)
return s
_timeRE = re.compile(r'[0-9]+[a-zA-Z]')
def timeDecode(s):
"""Decodes a number in the format 1h4d3m (1 hour, 3 days, 3 minutes)
into a number of seconds"""
time = 0
for match in allMatches(s, _timeRE):
char = match.group(0)[-1].lower()
if not timeValues.has_key(char):
# @@: should signal error
continue
time += int(match.group(0)[:-1]) * timeValues[char]
return time
__all__ = [timeEncode, timeDecode]
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