forked from LBRYCommunity/lbry-sdk
50 lines
No EOL
1.3 KiB
Python
50 lines
No EOL
1.3 KiB
Python
from lbrynet.core.cryptoutils import get_lbry_hash_obj
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import random
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blobhash_length = get_lbry_hash_obj().digest_size * 2 # digest_size is in bytes, and blob hashes are hex encoded
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def generate_id(num=None):
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h = get_lbry_hash_obj()
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if num is not None:
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h.update(str(num))
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else:
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h.update(str(random.getrandbits(512)))
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return h.digest()
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def is_valid_blobhash(blobhash):
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"""
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@param blobhash: string, the blobhash to check
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@return: Whether the blobhash is the correct length and contains only valid characters (0-9, a-f)
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"""
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if len(blobhash) != blobhash_length:
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return False
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for l in blobhash:
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if l not in "0123456789abcdef":
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return False
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return True
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def version_is_greater_than(version1, version2):
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"""
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handles differing numbers of subversions, ie 0.3.10 > 0.3.9.9
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"""
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v1, v2 = version1.split("."), version2.split(".")
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r = True
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if len(v2) > len(v1):
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for j in range(len(v2) - len(v1)):
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v1.append("0")
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elif len(v2) < len(v1):
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for j in range(len(v1) - len(v2)):
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v2.append("0")
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for c in range(len(v1)):
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if int(v2[c]) > int(v1[c]):
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r = False
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break
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elif c == len(v1) - 1 and int(v1[c]) == int(v2[c]):
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r = False
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return r |