Parse JSON example with WasmEdge C API

The parse-json example shows how to use a host function with a shared library json-c. The parseJson function accepts a string as a key, parses the JSON file test.json and returns the corresponding value.

The parse-json.wat is a WebAssembly script. It is compiled into WebAssembly in the form of parse-json.wasm using the WABT tool.

Installation

The version of json-c installed is 0.13.1 in Ubuntu 20.04.3.

Install json-c using the command below.

bash

sudo apt install -y libjson-c-dev

Instructions

bash

# Compilation
$ gcc host_function.c -ljson-c -lwasmedge -o host_function
$ ./host_function
Got the result: Success