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from __future__ import unicode_literals
from decimal import Decimal
from django.conf import settings
from django.utils import six
from django.utils.safestring import mark_safe
def format(number, decimal_sep, decimal_pos=None, grouping=0, thousand_sep='',
force_grouping=False):
"""
Gets a number (as a number or string), and returns it as a string,
using formats defined as arguments:
* decimal_sep: Decimal separator symbol (for example ".")
* decimal_pos: Number of decimal positions
* grouping: Number of digits in every group limited by thousand separator
* thousand_sep: Thousand separator symbol (for example ",")
"""
use_grouping = settings.USE_L10N and settings.USE_THOUSAND_SEPARATOR
use_grouping = use_grouping or force_grouping
use_grouping = use_grouping and grouping > 0
# Make the common case fast
if isinstance(number, int) and not use_grouping and not decimal_pos:
return mark_safe(six.text_type(number))
# sign
sign = ''
if isinstance(number, Decimal):
str_number = '{:f}'.format(number)
else:
str_number = six.text_type(number)
if str_number[0] == '-':
sign = '-'
str_number = str_number[1:]
# decimal part
if '.' in str_number:
int_part, dec_part = str_number.split('.')
if decimal_pos is not None:
dec_part = dec_part[:decimal_pos]
else:
int_part, dec_part = str_number, ''
if decimal_pos is not None:
dec_part = dec_part + ('0' * (decimal_pos - len(dec_part)))
if dec_part:
dec_part = decimal_sep + dec_part
# grouping
if use_grouping:
int_part_gd = ''
for cnt, digit in enumerate(int_part[::-1]):
if cnt and not cnt % grouping:
int_part_gd += thousand_sep[::-1]
int_part_gd += digit
int_part = int_part_gd[::-1]
return sign + int_part + dec_part
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