Exa-Networks /
exabgp
| @@ 82-95 (lines=14) @@ | ||
| 79 | @classmethod |
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| 80 | def fromElements(cls, prefix, suffix): |
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| 81 | try: |
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| 82 | if '.' in prefix: |
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| 83 | data = [bytes([0, 1])] |
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| 84 | # can be simplied |
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| 85 | data.extend([bytes([int(_)]) for _ in prefix.split('.')]) |
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| 86 | data.extend([bytes([suffix >> 8]), bytes([suffix & 0xFF])]) |
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| 87 | distinguisher = b''.join(data) |
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| 88 | else: |
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| 89 | number = int(prefix) |
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| 90 | if number < pow(2, 16) and suffix < pow(2, 32): |
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| 91 | distinguisher = bytes([0, 0]) + pack('!H', number) + pack('!L', suffix) |
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| 92 | elif number < pow(2, 32) and suffix < pow(2, 16): |
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| 93 | distinguisher = bytes([0, 2]) + pack('!L', number) + pack('!H', suffix) |
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| 94 | else: |
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| 95 | raise ValueError('invalid route-distinguisher %s' % number) |
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| 96 | ||
| 97 | return cls(distinguisher) |
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| 98 | except ValueError: |
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| @@ 46-58 (lines=13) @@ | ||
| 43 | prefix = data[:separator] |
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| 44 | suffix = int(data[separator + 1 :]) |
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| 45 | ||
| 46 | if '.' in prefix: |
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| 47 | data = [bytes([0, 1])] |
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| 48 | data.extend([bytes([int(_)]) for _ in prefix.split('.')]) |
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| 49 | data.extend([bytes([suffix >> 8]), bytes([suffix & 0xFF])]) |
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| 50 | rtd = b''.join(data) |
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| 51 | else: |
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| 52 | number = int(prefix) |
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| 53 | if number < pow(2, 16) and suffix < pow(2, 32): |
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| 54 | rtd = bytes([0, 0]) + pack('!H', number) + pack('!L', suffix) |
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| 55 | elif number < pow(2, 32) and suffix < pow(2, 16): |
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| 56 | rtd = bytes([0, 2]) + pack('!L', number) + pack('!H', suffix) |
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| 57 | else: |
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| 58 | raise ValueError('invalid route-distinguisher %s' % data) |
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| 59 | ||
| 60 | return RouteDistinguisher(rtd) |
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| 61 | ||
