django-orchestra/orchestra/utils/humanize.py

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from datetime import datetime
from django.utils import timezone
from django.utils.translation import ungettext, ugettext as _
def pluralize_year(n):
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return ungettext(
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_('{num:.1f} year{ago}'),
_('{num:.1f} years{ago}'), n)
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def pluralize_month(n):
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return ungettext(
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_('{num:.1f} month{ago}'),
_('{num:.1f} months{ago}'), n)
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def pluralize_week(n):
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return ungettext(
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_('{num:.1f} week{ago}'),
_('{num:.1f} weeks {ago}'), n)
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def pluralize_day(n):
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return ungettext(
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_('{num:.1f} day{ago}'),
_('{num:.1f} days{ago}'), n)
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OLDER_CHUNKS = (
(365.0, pluralize_year),
(30.0, pluralize_month),
(7.0, pluralize_week),
)
def _un(singular__plural, n=None):
singular, plural = singular__plural
return ungettext(singular, plural, n)
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def naturaldatetime(date, include_seconds=False):
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"""Convert datetime into a human natural date string."""
if not date:
return ''
right_now = timezone.now()
today = datetime(right_now.year, right_now.month,
right_now.day, tzinfo=right_now.tzinfo)
delta = right_now - date
delta_midnight = today - date
days = delta.days
hours = int(round(delta.seconds / 3600, 0))
minutes = delta.seconds / 60
seconds = delta.seconds
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ago = ' ago'
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if days < 0:
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ago = ''
days = abs(days)
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if days == 0:
if hours == 0:
if minutes > 0:
minutes += float(seconds)/60
return ungettext(
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_('{minutes:.1f} minute{ago}'),
_('{minutes:.1f} minutes{ago}'), minutes
).format(minutes=minutes, ago=ago)
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else:
if include_seconds and seconds:
return ungettext(
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_('{seconds} second{ago}'),
_('{seconds} seconds{ago}'), seconds
).format(seconds=seconds, ago=ago)
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return _('just now')
else:
hours += float(minutes)/60
return ungettext(
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_('{hours:.1f} hour{ago}'),
_('{hours:.1f} hours{ago}'), hours
).format(hours=hours, ago=ago)
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if delta_midnight.days == 0:
return _('yesterday at {time}').format(time=date.strftime('%H:%M'))
count = 0
for chunk, pluralizefun in OLDER_CHUNKS:
if days < 7.0:
count = days + float(hours)/24
fmt = pluralize_day(count)
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return fmt.format(num=count, ago=ago)
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if days >= chunk:
count = (delta_midnight.days + 1) / chunk
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count = abs(count)
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fmt = pluralizefun(count)
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return fmt.format(num=count, ago=ago)
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def naturaldate(date):
if not date:
return ''
today = timezone.now().date()
delta = today - date
days = delta.days
if days == 0:
return _('today')
elif days == 1:
return _('yesterday')
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ago = ' ago'
if days < 0:
ago = ''
days = abs(days)
delta_midnight = today - date
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count = 0
for chunk, pluralizefun in OLDER_CHUNKS:
if days < 7.0:
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count = days
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fmt = pluralize_day(count)
return fmt.format(num=count, ago=ago)
if days >= chunk:
count = (delta_midnight.days + 1) / chunk
count = abs(count)
fmt = pluralizefun(count)
return fmt.format(num=count, ago=ago)
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def text2int(textnum, numwords={}):
if not numwords:
units = (
'zero', 'one', 'two', 'three', 'four', 'five', 'six', 'seven', 'eight',
'nine', 'ten', 'eleven', 'twelve', 'thirteen', 'fourteen', 'fifteen',
'sixteen', 'seventeen', 'eighteen', 'nineteen',
)
tens = ('', '', 'twenty', 'thirty', 'forty', 'fifty', 'sixty', 'seventy', 'eighty', 'ninety')
scales = ['hundred', 'thousand', 'million', 'billion', 'trillion']
numwords['and'] = (1, 0)
for idx, word in enumerate(units):
numwords[word] = (1, idx)
for idx, word in enumerate(tens):
numwords[word] = (1, idx * 10)
for idx, word in enumerate(scales):
numwords[word] = (10 ** (idx * 3 or 2), 0)
current = result = 0
for word in textnum.split():
word = word.lower()
if word not in numwords:
raise Exception("Illegal word: " + word)
scale, increment = numwords[word]
current = current * scale + increment
if scale > 100:
result += current
current = 0
return result + current
UNITS_CONVERSIONS = {
1024**4: ['TB', 'TiB', 'TERABYTES'],
1024**3: ['GB', 'GiB', 'GYGABYTES'],
1024**2: ['MB', 'MiB', 'MEGABYTES'],
1024: ['KB', 'KiB', 'KYLOBYTES'],
1: ['B', 'BYTES'],
}
def unit_to_bytes(unit):
unit = unit.upper()
for bytes, units in UNITS_CONVERSIONS.iteritems():
if unit in units:
return bytes
raise KeyError("%s is not a valid unit." % unit)