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#!/usr/bin/env python3
# Copyright (c) 2016 Egor Tensin <Egor.Tensin@gmail.com>
# This file is part of the "Sorting algorithms" project.
# For details, see https://github.com/egor-tensin/sorting-algorithms.
# Distributed under the MIT License.
from array import array
import argparse
import sys
from algorithms.input_kind import InputKind
import algorithms.registry as registry
_DEFAULT_INPUT_KIND = InputKind.AVERAGE
_DEFAULT_LENGTH = 100
def test(algorithm, input_kind=_DEFAULT_INPUT_KIND, length=_DEFAULT_LENGTH):
if isinstance(algorithm, str):
algorithm = registry.get(algorithm)
xs = algorithm.gen_input(length, input_kind)
output = algorithm.function(xs)
if isinstance(output, array):
output = output.tolist()
print(output)
def _parse_non_negative_integer(s):
try:
n = int(s)
except ValueError:
raise argparse.ArgumentTypeError('must be a non-negative integer: ' + str(s))
if n < 0:
raise argparse.ArgumentTypeError('must be a non-negative integer')
return n
def _parse_input_kind(s):
try:
return InputKind(s)
except ValueError:
raise argparse.ArgumentTypeError('invalid input kind: ' + str(s))
def _format_algorithm(codename):
return '* {}: {}'.format(codename, registry.get(codename).display_name)
def _format_available_algorithms():
descr = 'available algorithms (in the CODENAME: DISPLAY_NAME format):\n'
return descr + '\n'.join(map(
_format_algorithm, sorted(registry.get_codenames())))
def _format_description():
return _format_available_algorithms()
def _create_argument_parser():
return argparse.ArgumentParser(
description=_format_description(),
formatter_class=argparse.RawDescriptionHelpFormatter)
def _parse_args(args=None):
if args is None:
args = sys.argv[1:]
parser = _create_argument_parser()
parser.add_argument('algorithm', metavar='CODENAME',
choices=registry.get_codenames(),
help='algorithm codename')
parser.add_argument('--input', '-i', dest='input_kind',
choices=InputKind,
type=_parse_input_kind,
default=_DEFAULT_INPUT_KIND,
help='specify input kind')
parser.add_argument('--length', '-l', '-n', metavar='N',
type=_parse_non_negative_integer,
default=_DEFAULT_LENGTH,
help='set input length')
return parser.parse_args(args)
def main(args=None):
test(**vars(_parse_args(args)))
if __name__ == '__main__':
main()
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