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feca713b76
* Bump dnspython from 2.6.1 to 2.7.0 Bumps [dnspython](https://github.com/rthalley/dnspython) from 2.6.1 to 2.7.0. - [Release notes](https://github.com/rthalley/dnspython/releases) - [Changelog](https://github.com/rthalley/dnspython/blob/main/doc/whatsnew.rst) - [Commits](https://github.com/rthalley/dnspython/compare/v2.6.1...v2.7.0) --- updated-dependencies: - dependency-name: dnspython dependency-type: direct:production update-type: version-update:semver-minor ... Signed-off-by: dependabot[bot] <support@github.com> * Update dnspython==2.7.0 --------- Signed-off-by: dependabot[bot] <support@github.com> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com> Co-authored-by: JonnyWong16 <9099342+JonnyWong16@users.noreply.github.com> [skip ci]
73 lines
2.1 KiB
Python
73 lines
2.1 KiB
Python
# Copyright (C) Dnspython Contributors, see LICENSE for text of ISC license
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# Copyright (C) 2012-2017 Nominum, Inc.
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#
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# Permission to use, copy, modify, and distribute this software and its
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# documentation for any purpose with or without fee is hereby granted,
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# provided that the above copyright notice and this permission notice
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# appear in all copies.
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#
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# THE SOFTWARE IS PROVIDED "AS IS" AND NOMINUM DISCLAIMS ALL WARRANTIES
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# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL NOMINUM BE LIABLE FOR
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# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
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# OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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"""DNS GENERATE range conversion."""
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from typing import Tuple
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import dns
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def from_text(text: str) -> Tuple[int, int, int]:
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"""Convert the text form of a range in a ``$GENERATE`` statement to an
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integer.
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*text*, a ``str``, the textual range in ``$GENERATE`` form.
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Returns a tuple of three ``int`` values ``(start, stop, step)``.
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"""
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start = -1
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stop = -1
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step = 1
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cur = ""
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state = 0
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# state 0 1 2
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# x - y / z
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if text and text[0] == "-":
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raise dns.exception.SyntaxError("Start cannot be a negative number")
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for c in text:
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if c == "-" and state == 0:
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start = int(cur)
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cur = ""
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state = 1
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elif c == "/":
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stop = int(cur)
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cur = ""
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state = 2
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elif c.isdigit():
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cur += c
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else:
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raise dns.exception.SyntaxError(f"Could not parse {c}")
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if state == 0:
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raise dns.exception.SyntaxError("no stop value specified")
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elif state == 1:
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stop = int(cur)
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else:
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assert state == 2
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step = int(cur)
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assert step >= 1
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assert start >= 0
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if start > stop:
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raise dns.exception.SyntaxError("start must be <= stop")
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return (start, stop, step)
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