Created two cmd line utilities for converting between hex and json

[ericpassmore]

Created two command line programs

• generate_hex_from_json - creates hex given an ABI and JSON
• generate_json_from_hex - creates json when provided an ABI and hex encoding

Used this for generating test data for eosjs

[heifner]

I think something more like https://github.com/EOSIO/abieos/pull/60 where the abi is provided as an abi file would be better.

[ericpassmore]

I think something more like EOSIO/abieos#60 where the abi is provided as an abi file would be better.

Good example, I can switch to a file to ABI, and I move the executables to tools directory.

Ok to use c++ to read the file? Specifically using std::filesystem::file_size for the file size, preallocating a byte vector, std::ifstream::read to populate the vector, then converting to string? The C-style malloc/free isn't my favorite.

[heifner]

I think same location of executes as name is good. Yes, please use C++ instead of C constructs for this including cout/cerr over fprintf.

[spoonincode]

fwiw a small, simple, but inefficient way I've used to read in a small file to a string is something like

   std::string filename = "foo.file";
   std::ifstream ifs(filename);
   std::string string_of_file_contents((std::istreambuf_iterator<char>(ifs)), std::istreambuf_iterator<char>());

(inefficiency doesn't really matter for simple stuff like this)

[ericpassmore]

I think same location of executes as name is good. Yes, please use C++ instead of C constructs for this including cout/cerr over fprintf.

Got it, I will C++'ify the code. Thanks for the simple approach to reading a small file. I'll take it.