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#****************************************************************************
# cmdline.py, provides a class to read and execute command line arguments
#
# ConvertAll, a units conversion program
# Copyright (C) 2015, Douglas W. Bell
#
# This is free software; you can redistribute it and/or modify it under the
# terms of the GNU General Public License, either Version 2 or any later
# version. This program is distributed in the hope that it will be useful,
# but WITTHOUT ANY WARRANTY. See the included LICENSE file for details.
#*****************************************************************************
import sys
import re
import option
import optiondefaults
import unitdata
import unitgroup
usage = [_('Usage:'),
'',
' convertall [{0}]'.format(_('qt-options')),
'',
_('-or- (non-GUI):'),
' convertall [{0}] [{1}] {2} [{3}]'.format(_('options'),
_('number'),
_('from_unit'),
_('to_unit')),
'',
_('-or- (non-GUI):'),
' convertall -i [{0}]'.format(_('options')),
'',
_('Units with spaces must be "quoted"'),
'',
_('Options:'),
' -d, --decimals={0:6} {1}'.format(_('num'),
_('set number of decimals to show')),
' -f, --fixed-decimals {0}'.format(
_('show set number of decimals, even if zeros')),
' -s, --sci-notation {0}'.format(
_('show results in scientific notation')),
' -e, --eng-notation {0}'.format(
_('show results in engineering notation')),
' -h, --help {0}'.format(
_('display this message and exit')),
' -i, --interactive {0}'.format(
_('interactive command line mode (non-GUI)')),
' -q, --quiet {0}'.format(
_('convert without further prompts')),
'']
def parseArgs(opts, args):
"""Parse the command line and output conversion results.
"""
options = option.Option('convertall', 20)
options.loadAll(optiondefaults.defaultList)
quiet = False
dataTestMode = False
for opt, arg in opts:
if opt in ('-h', '--help'):
printUsage()
return
if opt in ('-d', '--decimals'):
try:
decimals = int(arg)
if 0 <= decimals <= unitgroup.UnitGroup.maxDecPlcs:
options.changeData('DecimalPlaces', arg, False)
except ValueError:
pass
elif opt in ('-f', '--fixed-decimals'):
options.changeData('Notation', 'fixed', False)
elif opt in ('-s', '--sci-notation'):
options.changeData('Notation', 'scientific', False)
elif opt in ('-e', '--eng-notation'):
options.changeData('Notation', 'engineering', False)
elif opt in ('-q', '--quiet'):
quiet = True
elif opt in ('-t', '--test'):
dataTestMode = True
data = unitdata.UnitData()
try:
data.readData()
except unitdata.UnitDataError as text:
print('Error in unit data - {0}'.format(text))
sys.exit(1)
if dataTestMode:
unitDataTest(data, options)
return
numStr = '1.0'
if args:
numStr = args[0]
try:
float(numStr)
del args[0]
except (ValueError):
numStr = '1.0'
fromUnit = None
try:
fromUnit = getUnit(data, options, args.pop(0))
except IndexError:
pass
if not fromUnit and quiet:
return
toUnit = None
try:
toUnit = getUnit(data, options, args[0])
except IndexError:
pass
if not toUnit and quiet:
return
while True:
while not fromUnit:
text = _('Enter from unit -> ')
fromText = input(text)
if not fromText:
return
fromUnit = getUnit(data, options, fromText)
while not toUnit:
text = _('Enter to unit -> ')
toText = input(text)
if not toText:
return
toUnit = getUnit(data, options, toText)
if fromUnit.categoryMatch(toUnit):
badEntry = False
while True:
if not badEntry:
newNumStr = fromUnit.convertStr(float(numStr), toUnit)
print('{0} {1} = {2} {3}'.format(numStr,
fromUnit.unitString(),
newNumStr,
toUnit.unitString()))
if quiet:
return
badEntry = False
text = _('Enter number, [n]ew, [r]everse or [q]uit -> ')
rep = input(text)
if not rep or rep[0] in ('q', 'Q'):
return
if rep[0] in ('r', 'R'):
fromUnit, toUnit = toUnit, fromUnit
elif rep[0] in ('n', 'N'):
fromUnit = None
toUnit = None
numStr = '1.0'
print()
break
else:
try:
float(rep)
numStr = rep
except ValueError:
badEntry = True
else:
print(_('Units {0} and {1} are not compatible').
format(fromUnit.unitString(), toUnit.unitString()))
if quiet:
return
fromUnit = None
toUnit = None
def getUnit(data, options, text):
"""Create unit from text, check unit is valid,
return reduced unit or None.
"""
unit = unitgroup.UnitGroup(data, options)
unit.update(text)
if unit.groupValid():
unit.reduceGroup()
return unit
print(_('{0} is not a valid unit').format(text))
return None
def printUsage():
"""Print usage text.
"""
print('\n'.join(usage))
def unitDataTest(data, options):
"""Run through a test of all units for consistent definitions,
print results, return True if all pass.
"""
badUnits = {}
errorRegEx = re.compile(r'.*"(.*)"$')
for unit in data.values():
if not unit.unitValid():
badUnits.setdefault(unit.name, []).append(unit.name)
group = unitgroup.UnitGroup(data, options)
group.replaceCurrent(unit)
try:
group.reduceGroup()
except unitdata.UnitDataError as errorText:
rootUnitName = errorRegEx.match(errorText).group(1)
badUnits.setdefault(rootUnitName, []).append(unit.name)
if not badUnits:
print('All units pass tests')
return True
for key in sorted(badUnits.keys()):
impacts = ', '.join(sorted(badUnits[key]))
print('{0}\n Impacts: {1}\n'.format(key, impacts))
return False
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