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trezor-firmware/trezorlib/coins.py
2018-04-10 15:58:34 +02:00

46 lines
1.5 KiB
Python

import os.path
import json
from .tx_api import TxApiInsight, TxApiBlockCypher
COINS_JSON = os.path.join(os.path.dirname(__file__), 'coins.json')
def _load_coins_json():
# Load coins.json to local variables
# NOTE: coins.json comes from 'vendor/trezor-common/coins.json',
# which is a git submodule. If you're trying to run trezorlib directly
# from the checkout (or tarball), initialize the submodule with:
# $ git submodule update --init
# and install coins.json with:
# $ python setup.py prebuild
with open(COINS_JSON) as coins_json:
coins_list = json.load(coins_json)
return {coin['coin_name']: coin for coin in coins_list}
def _insight_for_coin(coin):
if not coin['bitcore']:
return None
zcash = coin['coin_name'].lower().startswith('zcash')
network = 'insight_{}'.format(coin['coin_name'].lower().replace(' ', '_'))
url = coin['bitcore'][0] + 'api/'
return TxApiInsight(network=network, url=url, zcash=zcash)
# exported variables
__all__ = ['by_name', 'slip44', 'tx_api']
try:
by_name = _load_coins_json()
except Exception as e:
raise ImportError("Failed to load coins.json. Check your installation.") from e
slip44 = {name: coin['bip44'] for name, coin in by_name.items()}
tx_api = {name: _insight_for_coin(coin)
for name, coin in by_name.items()
if coin["bitcore"]}
# fixup for Dogecoin
tx_api['Dogecoin'] = TxApiBlockCypher(network='blockcypher_dogecoin', url='https://api.blockcypher.com/v1/doge/main/')