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59 lines
1.8 KiB
59 lines
1.8 KiB
4 months ago
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# Copyright (C) 2020 Google LLC
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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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r"""Utility class for handling protobuf message."""
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from __future__ import absolute_import
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from __future__ import division
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from __future__ import print_function
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from google.protobuf import descriptor
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from six.moves import xrange # pylint:disable=redefined-builtin
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def NormalizeRepeatedFields(protobuf_message):
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"""Sorts all repeated fields and removes duplicates.
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Modifies pb in place.
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Args:
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protobuf_message: The Message object to normalize.
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Returns:
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protobuf_message, modified in place.
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"""
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for desc, values in protobuf_message.ListFields():
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if desc.label is descriptor.FieldDescriptor.LABEL_REPEATED:
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# Sort then de-dup
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values.sort()
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# De-dupe in place. Can't use set, etc. because messages aren't
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# hashable.
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for i in xrange(len(values) - 1, 0, -1):
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if values[i] == values[i - 1]:
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del values[i]
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return protobuf_message
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def Proto2Equals(a, b):
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"""Tests if two proto2 objects are equal.
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Recurses into nested messages. Uses list (not set) semantics for comparing
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repeated fields, ie duplicates and order matter.
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Returns:
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boolean
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"""
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return (a.SerializeToString(deterministic=True)
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== b.SerializeToString(deterministic=True))
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