152 lines
4.3 KiB
Python
152 lines
4.3 KiB
Python
from datetime import datetime
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from django.utils import timezone
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from django.utils.translation import ngettext, gettext as _
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def verbose_time(n, units, ago='ago'):
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if n >= 5:
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return _("{n} {units} {ago}").format(n=int(n), units=units, ago=ago)
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return ngettext(
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_("{n:.1f} {s_units} {ago}"),
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_("{n:.1f} {units} {ago}"), n
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).format(n=n, units=units, s_units=units[:-1], ago=ago)
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OLDER_CHUNKS = (
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(365.0, 'years'),
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(30.0, 'months'),
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(7.0, 'weeks'),
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)
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def _un(singular__plural, n=None):
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singular, plural = singular__plural
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return ngettext(singular, plural, n)
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def naturaldatetime(date, show_seconds=False):
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"""Convert datetime into a human natural date string."""
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if not date:
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return ''
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right_now = timezone.now()
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today = datetime(right_now.year, right_now.month,
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right_now.day, tzinfo=right_now.tzinfo)
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delta = right_now - date
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delta_midnight = today - date
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days = delta.days
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hours = float(delta.seconds) / 3600
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minutes = float(delta.seconds) / 60
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seconds = delta.seconds
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days = abs(days)
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ago = ''
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if right_now > date:
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ago = 'ago'
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if days == 0:
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if int(hours) == 0:
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if minutes >= 1 or not show_seconds:
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return verbose_time(minutes, 'minutes', ago=ago)
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else:
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return verbose_time(seconds, 'seconds', ago=ago)
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else:
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return verbose_time(hours, 'hours', ago=ago)
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if delta_midnight.days == 0:
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date = timezone.localtime(date)
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return _("yesterday at {time}").format(time=date.strftime('%H:%M'))
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count = 0
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for chunk, units in OLDER_CHUNKS:
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if days < 7.0:
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count = days + float(hours)/24
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return verbose_time(count, 'days', ago=ago)
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if days >= chunk:
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count = (delta_midnight.days + 1) / chunk
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count = abs(count)
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return verbose_time(count, units, ago=ago)
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def naturaldate(date):
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if not date:
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return ''
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today = timezone.now().date()
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delta = today - date
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days = delta.days
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if days == 0:
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return _('today')
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elif days == 1:
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return _('yesterday')
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ago = ' ago'
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if days < 0 or today < date:
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ago = ''
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days = abs(days)
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delta_midnight = today - date
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count = 0
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for chunk, units in OLDER_CHUNKS:
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if days < 7.0:
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count = days
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fmt = verbose_time(count, 'days', ago=ago)
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return fmt.format(num=count, ago=ago)
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if days >= chunk:
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count = (delta_midnight.days + 1) / chunk
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count = abs(count)
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fmt = verbose_time(count, units, ago=ago)
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return fmt.format(num=count, ago=ago)
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def text2int(textnum, numwords={}):
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if not numwords:
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units = (
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'zero', 'one', 'two', 'three', 'four', 'five', 'six', 'seven', 'eight',
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'nine', 'ten', 'eleven', 'twelve', 'thirteen', 'fourteen', 'fifteen',
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'sixteen', 'seventeen', 'eighteen', 'nineteen',
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)
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tens = ('', '', 'twenty', 'thirty', 'forty', 'fifty', 'sixty', 'seventy', 'eighty', 'ninety')
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scales = ['hundred', 'thousand', 'million', 'billion', 'trillion']
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numwords['and'] = (1, 0)
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for idx, word in enumerate(units):
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numwords[word] = (1, idx)
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for idx, word in enumerate(tens):
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numwords[word] = (1, idx * 10)
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for idx, word in enumerate(scales):
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numwords[word] = (10 ** (idx * 3 or 2), 0)
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current = result = 0
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for word in textnum.split():
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word = word.lower()
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if word not in numwords:
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raise Exception("Illegal word: " + word)
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scale, increment = numwords[word]
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current = current * scale + increment
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if scale > 100:
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result += current
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current = 0
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return result + current
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UNITS_CONVERSIONS = {
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1024**4: ['TB', 'TiB', 'TERABYTES'],
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1024**3: ['GB', 'GiB', 'GYGABYTES'],
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1024**2: ['MB', 'MiB', 'MEGABYTES'],
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1024: ['KB', 'KiB', 'KYLOBYTES'],
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1: ['B', 'BYTES'],
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}
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def unit_to_bytes(unit):
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for bytes, units in UNITS_CONVERSIONS.items():
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if unit in units:
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return bytes
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raise KeyError("%s is not a valid unit." % unit)
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