Handle invalid string in Json file

[arunpkio]

Bug Report

• I am using the following code load a JSON file. I want to handle the error cases if the JSON is wrong or corrupted. How do I handle or get to know if the JSON I am trying to load is with correct syntax or not.
  std::ifstream presetfile(presetName); json jsobject; jsobject << presetfile;

• Use a simple JSON file and add any character at the beginning of the JSON like "test" in the first line. Then try to load the file using the above code we can see a crash.

• I would like to see the information that the JSON that I am trying to load is corrupted/not in the expected format with a line where the issue is[optionally].

• Is simply crashes.

• I use Clang

• released

• No compile error

[nlohmann]

In case of a parse error, an exception is thrown. You should try:

std::ifstream presetfile(presetName);
json jsobject; 
try { jsobject << presetfile; }
catch (json::exception &e) { std::err << e.what(); << std::endl; }

[nlohmann]

See https://nlohmann.github.io/json/classnlohmann_1_1basic__json_af1efc2468e6022be6e35fc2944cabe4d.html#af1efc2468e6022be6e35fc2944cabe4d for more information on parse error exceptions.

[arunpkio]

Thanks. I was using an old version and now updated to 3.0.1 and was able to handle the exception.