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https://github.com/openvswitch/ovs
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26bb0f3129
This patch does minor style cleanups to the code in the python and tests directory. There's other code floating around that could use similar treatment, but updating it is not convenient at the moment.
71 lines
2.0 KiB
Python
71 lines
2.0 KiB
Python
# Copyright (c) 2009, 2010, 2011 Nicira Networks
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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 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, 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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