nimbus-eth2/ncli/ncli_hash_tree_root.nim

import
  confutils, os, strutils, json_serialization,
  stew/byteutils,
  ../beacon_chain/spec/[crypto, datatypes, digest],
  ../beacon_chain/ssz/[merkleization, ssz_serialization]

# TODO turn into arguments
cli do(kind: string, file: string):

  template printit(t: untyped) {.dirty.} =
    let v = newClone(
      if cmpIgnoreCase(ext, ".ssz") == 0:
        SSZ.loadFile(file, t)
      elif cmpIgnoreCase(ext, ".json") == 0:
        JSON.loadFile(file, t)
      else:
        echo "Unknown file type: ", ext
        quit 1
    )
    when t is SignedBeaconBlock:
      echo hash_tree_root(v.message).data.toHex()
    else:
      echo hash_tree_root(v[]).data.toHex()

  let ext = splitFile(file).ext

  case kind
  of "attester_slashing": printit(AttesterSlashing)
  of "attestation": printit(Attestation)
  of "signed_block": printit(SignedBeaconBlock)
  of "block": printit(BeaconBlock)
  of "block_body": printit(BeaconBlockBody)
  of "block_header": printit(BeaconBlockHeader)
  of "deposit": printit(Deposit)
  of "deposit_data": printit(DepositData)
  of "eth1_data": printit(Eth1Data)
  of "state": printit(BeaconState)
  of "proposer_slashing": printit(ProposerSlashing)
  of "voluntary_exit": printit(VoluntaryExit)