app/django/utils/datetime_safe.py
author Lennard de Rijk <ljvderijk@gmail.com>
Sat, 14 Feb 2009 21:18:12 +0000
changeset 1328 cd175dddc15c
parent 323 ff1a9aa48cfd
permissions -rw-r--r--
Added bulk acceptance and progress bar in review org applications view. In the list of organization applications for reviewing, if you click the button "click here" the whole first text line will fade out and the progress bar will fade in while starting to contact the server for the list of orgs to accept and then make synchronous calls for acceptance, while updating the progress bar, the name of the organization currently accepting and the number of orgs already accepted against the total. Inside the script, what's inside the parenthesis is converted due to regexp (in this case (link_id)) and then read the json_object.applications[index].link_id. By doing this with an eval(), you can use other names as well and the script will be reading for example json_object.applications[index].attribute_name if you insert "(attribute_name)" inside the link returned by {{ bulk_accept_link }}. Notes by Lennard: -Put Done outside the for-loop so that it also shows when there are 0 pre-accepted organizations. -Made some minor style fixes Patch by: Mario Ferraro Reviewed by: Lennard de Rijk

# Python's datetime strftime doesn't handle dates before 1900.
# These classes override date and datetime to support the formatting of a date
# through its full "proleptic Gregorian" date range.
#
# Based on code submitted to comp.lang.python by Andrew Dalke
#
# >>> datetime_safe.date(1850, 8, 2).strftime("%Y/%M/%d was a %A")
# '1850/08/02 was a Friday'

from datetime import date as real_date, datetime as real_datetime
import re
import time

class date(real_date):
    def strftime(self, fmt):
        return strftime(self, fmt)

class datetime(real_datetime):
    def strftime(self, fmt):
        return strftime(self, fmt)

    def combine(self, date, time):
        return datetime(date.year, date.month, date.day, time.hour, time.minute, time.microsecond, time.tzinfo)

    def date(self):
        return date(self.year, self.month, self.day)

def new_date(d):
    "Generate a safe date from a datetime.date object."
    return date(d.year, d.month, d.day)

def new_datetime(d):
    """
    Generate a safe datetime from a datetime.date or datetime.datetime object.
    """
    kw = [d.year, d.month, d.day]
    if isinstance(d, real_datetime):
        kw.extend([d.hour, d.minute, d.second, d.microsecond, d.tzinfo])
    return datetime(*kw)

# This library does not support strftime's "%s" or "%y" format strings.
# Allowed if there's an even number of "%"s because they are escaped.
_illegal_formatting = re.compile(r"((^|[^%])(%%)*%[sy])")

def _findall(text, substr):
    # Also finds overlaps
    sites = []
    i = 0
    while 1:
        j = text.find(substr, i)
        if j == -1:
            break
        sites.append(j)
        i=j+1
    return sites

def strftime(dt, fmt):
    if dt.year >= 1900:
        return super(type(dt), dt).strftime(fmt)
    illegal_formatting = _illegal_formatting.search(fmt)
    if illegal_formatting:
        raise TypeError("strftime of dates before 1900 does not handle" + illegal_formatting.group(0))

    year = dt.year
    # For every non-leap year century, advance by
    # 6 years to get into the 28-year repeat cycle
    delta = 2000 - year
    off = 6 * (delta // 100 + delta // 400)
    year = year + off

    # Move to around the year 2000
    year = year + ((2000 - year) // 28) * 28
    timetuple = dt.timetuple()
    s1 = time.strftime(fmt, (year,) + timetuple[1:])
    sites1 = _findall(s1, str(year))

    s2 = time.strftime(fmt, (year+28,) + timetuple[1:])
    sites2 = _findall(s2, str(year+28))

    sites = []
    for site in sites1:
        if site in sites2:
            sites.append(site)

    s = s1
    syear = "%4d" % (dt.year,)
    for site in sites:
        s = s[:site] + syear + s[site+4:]
    return s