mirror of
https://github.com/openvswitch/ovs
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b3ac29477d
Python 2 had range() and xrange(). xrange() is more efficient, but behaves differently so range() was retained for compatibility. Python 3 only has range() and it behaves like Python 2's xrange(). Remove explicit use of xrange() and use six.moves.range() to make sure we're using xrange() from Python 2 or range() from Python 3. Signed-off-by: Russell Bryant <russell@ovn.org> Acked-by: Ben Pfaff <blp@ovn.org>
73 lines
2.0 KiB
Python
73 lines
2.0 KiB
Python
# Copyright (c) 2009, 2010, 2011 Nicira, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at:
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import re
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import uuid
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from six.moves import range
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from ovs.db import error
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import ovs.db.parser
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uuidRE = re.compile("^xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx$"
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.replace('x', '[0-9a-fA-F]'))
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def zero():
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return uuid.UUID(int=0)
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def is_valid_string(s):
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return uuidRE.match(s) is not None
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def from_string(s):
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if not is_valid_string(s):
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raise error.Error("%s is not a valid UUID" % s)
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return uuid.UUID(s)
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def from_json(json, symtab=None):
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try:
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s = ovs.db.parser.unwrap_json(json, "uuid", [str, unicode], "string")
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if not uuidRE.match(s):
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raise error.Error("\"%s\" is not a valid UUID" % s, json)
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return uuid.UUID(s)
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except error.Error as e:
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if not symtab:
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raise e
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try:
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name = ovs.db.parser.unwrap_json(json, "named-uuid",
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[str, unicode], "string")
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except error.Error:
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raise e
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if name not in symtab:
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symtab[name] = uuid.uuid4()
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return symtab[name]
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def to_json(uuid_):
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return ["uuid", str(uuid_)]
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def to_c_assignment(uuid_, var):
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"""Returns an array of strings, each of which contain a C statement. The
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statements assign 'uuid_' to a "struct uuid" as defined in Open vSwitch
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lib/uuid.h."""
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hex_string = uuid_.hex
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return ["%s.parts[%d] = 0x%s;" % (var, x, hex_string[x * 8:(x + 1) * 8])
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for x in range(4)]
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