Function parse_script

bitcoin/tests/test_scripteval.py:23–49

(s)

from bitcoin.core.scripteval import *

def parse_script(s):
    def ishex(s):
        return set(s).issubset(set('0123456789abcdefABCDEF'))

    r = []

    # Create an opcodes_by_name table with both OP_ prefixed names and
    # shortened ones with the OP_ dropped.
    opcodes_by_name = {}
    for name, code in OPCODES_BY_NAME.items():
        opcodes_by_name[name] = code
        opcodes_by_name[name[3:]] = code

    for word in s.split():
        if word.isdigit() or (word[0] == '-' and word[1:].isdigit()):
            r.append(CScript([int(word)]))
        elif word.startswith('0x') and ishex(word[2:]):
            # Raw ex data, inserted NOT pushed onto stack:
            r.append(unhexlify(word[2:].encode('utf8')))
        elif len(word) >= 2 and word[0] == "'" and word[-1] == "'":
            r.append(CScript([bytes(word[1:-1].encode('utf8'))]))
        elif word in opcodes_by_name:
            r.append(CScript([opcodes_by_name[word]]))
        else:
            raise ValueError("Error parsing script: %r" % s)

    return CScript(b''.join(r))


def load_test_vectors(name):