Differential D6289 Diff 20758 contrib/devtools/chainparams/generate_chainparams_constants.py

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contrib/devtools/chainparams/generate_chainparams_constants.py

Show All 10 Lines	as an argument:

chainparams_main.txt		chainparams_main.txt
chainparams_test.txt		chainparams_test.txt

These files must consist of lines in the format		These files must consist of lines in the format

<assumevalid hash>		<assumevalid hash>
<minimum chainwork>		<minimum chainwork>
		<assumed blockchain size on disk (in GB)>
		<assumed chainstate size on disk (in GB)>

The outputted constants should be pasted into `src/chainparamsconstants.h`.		The outputted constants should be pasted into `src/chainparamsconstants.h`.
'''		'''

import sys		import sys
import os		import os


def process_constants(indir, file_name):		def process_constants(indir, file_name):
with open(os.path.join(indir, file_name), 'r', encoding="utf8") as f:		with open(os.path.join(indir, file_name), 'r', encoding="utf8") as f:
constants = f.readlines()		constants = f.readlines()

# Ensure only two lines are read from the file.		# Ensure only the expected number of lines are read from the file
assert(len(constants) == 2)		assert(len(constants) == 4)

return [line.rstrip() for line in constants]		return [line.rstrip() for line in constants]


def main():		def main():
if len(sys.argv) != 2:		if len(sys.argv) != 2:
print('Usage: {} <dir_with_chainparams_txt>'.format(		print('Usage: {} <dir_with_chainparams_txt>'.format(
sys.argv[0]), file=sys.stderr)		sys.argv[0]), file=sys.stderr)
Show All 10 Lines
*/		*/

#include <primitives/blockhash.h>		#include <primitives/blockhash.h>
#include <uint256.h>		#include <uint256.h>

namespace ChainParamsConstants {{		namespace ChainParamsConstants {{
const BlockHash MAINNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("{}");		const BlockHash MAINNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("{}");
const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("{}");		const uint256 MAINNET_MINIMUM_CHAIN_WORK = uint256S("{}");
		const uint64_t MAINNET_ASSUMED_BLOCKCHAIN_SIZE = {};
		const uint64_t MAINNET_ASSUMED_CHAINSTATE_SIZE = {};

const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("{}");		const BlockHash TESTNET_DEFAULT_ASSUME_VALID = BlockHash::fromHex("{}");
const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("{}");		const uint256 TESTNET_MINIMUM_CHAIN_WORK = uint256S("{}");
		const uint64_t TESTNET_ASSUMED_BLOCKCHAIN_SIZE = {};
		const uint64_t TESTNET_ASSUMED_CHAINSTATE_SIZE = {};
}} // namespace ChainParamsConstants		}} // namespace ChainParamsConstants

#endif // BITCOIN_CHAINPARAMSCONSTANTS_H\		#endif // BITCOIN_CHAINPARAMSCONSTANTS_H\
'''.format(		'''.format(
# 'generated' is split out so this file is not identified as generated.		# 'generated' is split out so this file is not identified as generated.
"generated",		"generated",
*process_constants(indir, 'chainparams_main.txt'),		*process_constants(indir, 'chainparams_main.txt'),
*process_constants(indir, 'chainparams_test.txt'))		*process_constants(indir, 'chainparams_test.txt'))
)		)


if __name__ == '__main__':		if __name__ == '__main__':
main()		main()