rs2_load_json() error

[TouchDeeper]

---

Required Info
Camera Model	D435
Firmware Version	05.11.01.00
Operating System & Version	Ubuntu 16.04
Kernel Version (Linux Only)	4.15.0
Platform	PC
SDK Version	2.18.1
Language	C++
Segment	Robot

Issue Description

The core code is below:

    //load customized preset
    auto sensor2 = profile.get_device();
    std::string jsonPath = "./ShortRangePreset.json";
    auto advancedDepthSensor = sensor2.as<rs400::advanced_mode>();
    advancedDepthSensor.load_json(jsonPath);

The error is below:

RealSense error calling rs2_load_json(dev:0x14a9710, json_content:0x143af60, content_size:23):
    parse error - unexpected '.'

I read the related issue. It seems like has been fixed, but I encounter the error again.
Can you provide some advice? Thanks a lot!

[dorodnic]

Seems like the problem is in the JSON file content. Please check you are passing valid JSON file

[TouchDeeper]

Hello @dorodnic
I check the json file, it is downloaded from the realsense wiki. I think the json file is no problem.
The error may caused by the load_json function, because when I modify the std::string jsonPath = "./ShortRangePreset.json"; to std::string jsonPath = "/ShortRangePreset.json";, the error will be:

RealSense error calling rs2_load_json(dev:0x14a9710, json_content:0x143af60, content_size:23):
    parse error - unexpected '/'

[dorodnic]

Oh... Sorry. Load JSON is expecting file content, not file name.

[TouchDeeper]

Oh, so how can I load all the parameters of a .json file?

[dorodnic]

std::ifstream file("ShortRangePreset.json");
std::string str((std::istreambuf_iterator<char>(file)), std::istreambuf_iterator<char>());
advanced.load_json(str);

[TouchDeeper]

Hello @dorodnic
It works, thanks a lot!