shafreeck / pb2json

Decode protobuf to json format

1. Introducton:

Decode protobuf to json format

It depends on jansson(https://github.com/akheron/jansson) to pack json

Support all type of protobuf Message (example: see test/person.proto) and binary bytes(jansson does not support binary bytes) will be translated to hex sequence

2. Install

This library depends on jansson(http://www.digip.org/jansson/)

We assumed you have installed protobuf

1) install jansson

wget "http://www.digip.org/jansson/releases/jansson-2.1.tar.gz "
tar -zxvf jansson-2.1.tar.gz
cd jansson-2.1
./configure
make
sudo make install

2)install pb2json (is simple)

make
sudo make install

3. Test & example

cd $src/test
run make to generate object files
./runtest to see the result

4. Usage

You can refer to $src/test/test_json.cpp

It is pretty simple to use ,and we just have one API:

char *pb2json(Message *msg,const char *buf, int len);

return json string if sucess ,NULL if failed,it should be freed by caller
msg : instance of class generated by protoc
buf : binary content of protobuf
len : length of buf

There is another variance:

char *pb2json(Message &msg)

pb2json's Issues

bytes problem

I think you'd better emphasize that this project doesn't support binary bytes, because
this project use jansson to pack json. And jansson only support c style string bytes: https://github.com/akheron/jansson/blob/master/src/jansson.h json_t *json_string(const char *value);

executable for Windows

i need executable for Windows, tanks

os x compatibile?

Hi I was wondering if you were going to make this os x compatible? I am seeing these errors when I try to run the make command.

Undefined symbols for architecture x86_64:
"std::basic_string<char, std::char_traits, std::allocator >::c_str() const", referenced from:
parse_msg(google::protobuf::Message const_)in ccRbkx42.o
"std::basic_string<char, std::char_traits, std::allocator >::length() const", referenced from:
hex_encode(std::basic_string<char, std::char_traits, std::allocator > const&)in ccRbkx42.o
"std::basic_string<char, std::char_traits, std::allocator >::operator[](unsigned long) const", referenced from:
hex_encode(std::basic_string<char, std::char_traits, std::allocator > const&)in ccRbkx42.o
"std::allocator::allocator()", referenced from:
pb2json(google::protobuf::Message_, char const_, int)in ccRbkx42.o
"std::allocator::~allocator()", referenced from:
pb2json(google::protobuf::Message_, char const_, int)in ccRbkx42.o
"std::basic_string<char, std::char_traits, std::allocator >::reserve(unsigned long)", referenced from:
hex_encode(std::basic_string<char, std::char_traits, std::allocator > const&)in ccRbkx42.o
"std::basic_string<char, std::char_traits, std::allocator >::push_back(char)", referenced from:
hex_encode(std::basic_string<char, std::char_traits, std::allocator > const&)in ccRbkx42.o
"std::basic_string<char, std::char_traits, std::allocator >::basic_string(char const_, unsigned long, std::allocator const&)", referenced from:
pb2json(google::protobuf::Message_, char const_, int)in ccRbkx42.o
"std::basic_string<char, std::char_traits, std::allocator >::basic_string()", referenced from:
hex_encode(std::basic_string<char, std::char_traits, std::allocator > const&)in ccRbkx42.o
parse_msg(google::protobuf::Message const_)in ccRbkx42.o
"std::basic_string<char, std::char_traits, std::allocator >::~basic_string()", referenced from:
hex_encode(std::basic_string<char, std::char_traits, std::allocator > const&)in ccRbkx42.o
parse_msg(google::protobuf::Message const_)in ccRbkx42.o
pb2json(google::protobuf::Message_, char const_, int)in ccRbkx42.o
"std::basic_string<char, std::char_traits, std::allocator >::operator=(std::basic_string<char, std::char_traits, std::allocator > const&)", referenced from:
parse_msg(google::protobuf::Message const_)in ccRbkx42.o
"std::terminate()", referenced from:
hex_encode(std::basic_string<char, std::char_traits, std::allocator > const&)in ccRbkx42.o
parse_msg(google::protobuf::Message const_)in ccRbkx42.o
pb2json(google::protobuf::Message_, char const_, int)in ccRbkx42.o
"___gxx_personality_v0", referenced from:
Dwarf Exception Unwind Info (__eh_frame) in ccRbkx42.o
ld: symbol(s) not found for architecture x86_64
collect2: ld returned 1 exit status
make: *** [libpb2json.so] Error 1