mirror of
https://github.com/chaintool-py/eth-erc20.git
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124 lines
3.6 KiB
Python
124 lines
3.6 KiB
Python
#!python3
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"""Token balance query script
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.. moduleauthor:: Louis Holbrook <dev@holbrook.no>
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.. pgp:: 0826EDA1702D1E87C6E2875121D2E7BB88C2A746
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"""
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# SPDX-License-Identifier: GPL-3.0-or-later
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# standard imports
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import sys
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import os
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import json
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import argparse
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import logging
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# third-party imports
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from hexathon import (
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add_0x,
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strip_0x,
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even,
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)
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import sha3
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from eth_abi import encode_single
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# external imports
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from chainlib.eth.address import to_checksum
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from chainlib.eth.connection import EthHTTPConnection
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from chainlib.eth.gas import (
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OverrideGasOracle,
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balance,
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)
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from chainlib.chain import ChainSpec
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# local imports
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from eth_erc20 import ERC20
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logging.basicConfig(level=logging.WARNING)
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logg = logging.getLogger()
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default_eth_provider = os.environ.get('RPC_PROVIDER')
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if default_eth_provider == None:
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default_eth_provider = os.environ.get('ETH_PROVIDER', 'http://localhost:8545')
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argparser = argparse.ArgumentParser()
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argparser.add_argument('-p', '--provider', dest='p', default=default_eth_provider, type=str, help='Web3 provider url (http only)')
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argparser.add_argument('-a', '--token-address', dest='a', required=True, type=str, help='Token address. If not set, will return gas balance')
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argparser.add_argument('-f', '--format', dest='f', type=str, default='terminal', help='Output format [terminal (default), raw, brief]')
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argparser.add_argument('-i', '--chain-spec', dest='i', type=str, default='evm:ethereum:1', help='Chain specification string')
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argparser.add_argument('-u', '--unsafe', dest='u', action='store_true', help='Auto-convert address to checksum adddress')
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argparser.add_argument('--seq', action='store_true', help='Use sequential rpc ids')
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argparser.add_argument('-v', action='store_true', help='Be verbose')
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argparser.add_argument('-vv', action='store_true', help='Be more verbose')
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argparser.add_argument('address', type=str, help='Account address')
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args = argparser.parse_args()
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if args.vv:
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logg.setLevel(logging.DEBUG)
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elif args.v:
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logg.setLevel(logging.INFO)
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conn = EthHTTPConnection(args.p)
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gas_oracle = OverrideGasOracle(conn)
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address = to_checksum(args.address)
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if not args.u and address != add_0x(args.address):
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raise ValueError('invalid checksum address')
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token_address = args.a
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fmt = args.f
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chain_spec = ChainSpec.from_chain_str(args.i)
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def main():
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r = None
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decimals = 18
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g = ERC20(chain_spec=chain_spec)
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# determine decimals
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decimals_o = g.decimals(token_address)
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r = conn.do(decimals_o)
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decimals = int(strip_0x(r), 16)
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logg.info('decimals {}'.format(decimals))
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name_o = g.name(token_address)
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r = conn.do(name_o)
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token_name = g.parse_name(r)
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logg.info('name {}'.format(token_name))
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symbol_o = g.symbol(token_address)
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r = conn.do(symbol_o)
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token_symbol = g.parse_symbol(r)
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logg.info('symbol {}'.format(token_symbol))
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# get balance
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balance_o = g.balance(token_address, address)
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r = conn.do(balance_o)
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hx = strip_0x(r)
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balance_value = int(hx, 16)
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logg.debug('balance {} = {} decimals {}'.format(even(hx), balance_value, decimals))
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balance_str = str(balance_value)
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balance_len = len(balance_str)
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if fmt == 'terminal':
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sys.stdout.write('{} ({}): '.format(token_name, token_symbol))
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if fmt == 'raw':
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print(balance_str)
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else:
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if balance_len < decimals + 1:
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print('0.{}'.format(balance_str.zfill(decimals)))
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else:
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offset = balance_len-decimals
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print('{}.{}'.format(balance_str[:offset],balance_str[offset:]))
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if __name__ == '__main__':
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main()
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