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* Retrieve and process summary or full ledgers. * Search using arbitrary criteria (any Python function). * Search using arbitrary formats (any Python function). * Caches ledgers as .gz files to avoid repeated server requests. * Handles ledger numbers, ranges, and special names like validated or closed.
47 lines
1.3 KiB
Python
47 lines
1.3 KiB
Python
from __future__ import absolute_import, division, print_function, unicode_literals
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"""Fixed point numbers."""
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POSITIONS = 10
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POSITIONS_SHIFT = 10 ** POSITIONS
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class Decimal(object):
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def __init__(self, desc='0'):
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if isinstance(desc, int):
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self.value = desc
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return
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if desc.startswith('-'):
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sign = -1
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desc = desc[1:]
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else:
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sign = 1
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parts = desc.split('.')
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if len(parts) == 1:
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parts.append('0')
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elif len(parts) > 2:
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raise Exception('Too many decimals in "%s"' % desc)
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number, decimal = parts
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# Fix the number of positions.
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decimal = (decimal + POSITIONS * '0')[:POSITIONS]
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self.value = sign * int(number + decimal)
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def accumulate(self, item):
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if not isinstance(item, Decimal):
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item = Decimal(item)
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self.value += item.value
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def __str__(self):
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if self.value >= 0:
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sign = ''
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value = self.value
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else:
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sign = '-'
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value = -self.value
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number = value // POSITIONS_SHIFT
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decimal = (value % POSITIONS_SHIFT) * POSITIONS_SHIFT
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if decimal:
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return '%s%s.%s' % (sign, number, str(decimal).rstrip('0'))
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else:
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return '%s%s' % (sign, number)
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