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# Copyright 2015 Egor Tensin <Egor.Tensin@gmail.com>
# This file is licensed under the terms of the MIT License.
# See LICENSE.txt for details.
import argparse, sys
from vk.api import API, Language
from vk.tracking import StatusTracker
from vk.tracking.db import Format as DatabaseFormat
def _parse_natural_number(s):
x = int(s)
if x < 1:
raise argparse.ArgumentTypeError('must be positive: ' + x)
return x
def _parse_output_format(s):
try:
return DatabaseFormat(s)
except ValueError:
raise argparse.ArgumentTypeError('invalid database format: ' + str(s))
def _parse_args(args=sys.argv):
parser = argparse.ArgumentParser(
description='Track when people go online/offline.')
parser.add_argument('uids', metavar='UID', nargs='+',
help='user IDs or "screen names"')
parser.add_argument('-t', '--timeout', metavar='SECONDS',
type=_parse_natural_number,
default=StatusTracker.DEFAULT_TIMEOUT,
help='set refresh interval')
parser.add_argument('-l', '--log', metavar='PATH', dest='log_fd',
type=argparse.FileType('w', encoding='utf-8'),
default=sys.stdout,
help='set log file path (standard output by default)')
parser.add_argument('--output-format', dest='fmt',
type=_parse_output_format, default=DatabaseFormat.CSV,
choices=tuple(fmt for fmt in DatabaseFormat),
help='set database format')
parser.add_argument('-o', '--output', metavar='PATH', dest='fd',
type=argparse.FileType('w', encoding='utf-8'),
default=None,
help='set database file path')
return parser.parse_args(args[1:])
def track_status(uids, timeout=StatusTracker.DEFAULT_TIMEOUT,
log_fd=sys.stdout, fmt=DatabaseFormat.CSV, fd=None):
api = API(Language.EN, deactivated_users=False)
tracker = StatusTracker(api, timeout)
if fmt is DatabaseFormat.LOG or fd is None:
fmt = DatabaseFormat.NULL
with DatabaseFormat.LOG.create_writer(log_fd) as log_writer:
tracker.add_database_writer(log_writer)
with fmt.create_writer(fd) as db_writer:
tracker.add_database_writer(db_writer)
tracker.loop(uids)
def main(args=sys.argv):
args = _parse_args(args)
track_status(**vars(args))
if __name__ == '__main__':
main()
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