# Copyright (C) 2015 Chintalagiri Shashank
#
# This file is part of Tendril.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
"""
This file is part of tendril
See the COPYING, README, and INSTALL files for more information
"""
import re
from decimal import Decimal
from tendril.utils import log
from .unitbase import NumericalUnitBase
logger = log.get_logger(__name__, log.DEFAULT)
lrex = re.compile(r'^((?P<m>[-+]?\d*\.*\d+) *(m|mtr) *$)|((?P<um>[-+]?\d*\.*\d+) *um *$)|((?P<cm>[-+]?\d*\.*\d+) *cm *$)|((?P<mm>[-+]?\d*\.*\d+) *mm *$)|((?P<mil>[-+]?\d*\.*\d+) *mil *$)|((?P<cmil>[-+]?\d*\.*\d+) *cmil *$)|((?P<in>[-+]?\d*\.*\d+) *(in|inch) *$)', # noqa
re.IGNORECASE)
[docs]def parse_length(value):
match = lrex.match(value)
if match is None:
logger.warning("Length not parsed : " + value)
raise ValueError(value)
um = match.group('um')
if um is not None:
_olength = Decimal(um) / Decimal('1000000')
return _olength
mm = match.group('mm')
if mm is not None:
_olength = Decimal(mm) / Decimal('1000')
return _olength
cm = match.group('cm')
if cm is not None:
_olength = Decimal(cm) / Decimal('100')
return _olength
m = match.group('m')
if m is not None:
_olength = Decimal(m)
return _olength
inch = match.group('in')
if inch is not None:
_olength = Decimal(inch) * Decimal('25.4') / Decimal('1000')
return _olength
mil = match.group('mil')
if mil is not None:
_olength = Decimal(mil) * Decimal('25.4') / Decimal('1000000')
return _olength
cmil = match.group('cmil')
if cmil is not None:
_olength = Decimal(cmil) * Decimal('25.4') / Decimal('100000')
return _olength
[docs]class Length(NumericalUnitBase):
def __init__(self, value):
_ostrs = ['um', 'mm', 'm', 'km']
_dostr = 'm'
_parse_func = parse_length
super(Length, self).__init__(value, _ostrs, _dostr, _parse_func)