Pbviewer (or pbviewer) is for inspecting fields from Protocol Buffers with the absense of .proto file.
It saves time of codegen (for Message reader) and installation of protoc on your machine.
From the source code:
$ git clone <url>
$ cd pbviewer
$ python setup.py installfrom pbviewer import ParseFields
# `ss` is the serialized data (file-like object)
fields = ParseFields(ss)
"""
====== Output =====
{1: 20150101, 2: 123, 4: "hello"}
"""
print fields
"""
====== Output =====
1 varint 20150101 4 D5 EE CD 09
2 varint 123 1 7B
4 string hello 6 05 68 65 6C 6C 6F
"""
for k,v in fields.items():
print '{}\t{:7}\t{:20}\t{}\t{}'.format(k, v.type, v.value, v.size, v.hex)Nothing! Pbviewer do not depend on any library, even python protobuf.
But the unittest requires Nose and protobuf.
Pbviewer simply parses byte buffer by guessing what the bytes mean.
More specifically, pbviewer parses the fields based on the encoding rule of Protocol Buffers (a.k.a. wired format. Please refer to: https://developers.google.com/protocol-buffers/docs/encoding). All code here is in pure python.
As a result, it can not tell difference among int64, uint64 and sint64. It only sees "variant-length" integers. And it references all the fields by tag numbers instead of their literal names (appear in .proto file).
MIT