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show_pb.py
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59 lines (47 loc) · 1.61 KB
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# Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""
Show the content of proto buffer data file of PADDLE
"""
from __future__ import print_function
import os
import sys
from google.protobuf.internal.decoder import _DecodeVarint
import paddle.proto.DataFormat_pb2 as DataFormat
def read_proto(file, message):
"""
read a protobuffer struct from file, the length of the struct is stored as
a varint, then followed by the actual struct data.
@return True success, False for end of file
"""
buf = file.read(8)
if not buf:
return False
result, pos = _DecodeVarint(buf, 0)
buf = buf[pos:] + file.read(result - len(buf) + pos)
message.ParseFromString(buf)
return True
def usage():
print("Usage: python show_pb.py PROTO_DATA_FILE", file=sys.stderr)
exit(1)
if __name__ == '__main__':
if len(sys.argv) < 2:
usage()
f = open(sys.argv[1])
header = DataFormat.DataHeader()
read_proto(f, header)
print(header)
sample = DataFormat.DataSample()
while read_proto(f, sample):
print(sample)