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#define EXTISM_NO_JSON

#include "extism.hpp"

#include <cstring>

#include <fstream>

#include <iostream>

using namespace extism;

std::vector<uint8_t> read(const char *filename) {

std::ifstream file(filename, std::ios::binary);

return std::vector<uint8_t>((std::istreambuf_iterator<char>(file)),

std::istreambuf_iterator<char>());

}

int main(int argc, char *argv[]) {

if (argc < 2) {

std::cout << "No input file provided" << std::endl;

return 1;

}

auto wasm = read(argv[1]);

std::string tmp = "Testing";

// A lambda can be used as a host function

auto hello_world = [&tmp](CurrentPlugin plugin, void *user_data) {

std::cout << "Hello from C++" << std::endl;

std::cout << (const char *)user_data << std::endl;

std::cout << tmp << std::endl;

plugin.outputVal(0).v = plugin.inputVal(0).v;

};

std::vector<Function> functions = {

Function("hello_world", {ValType::ExtismValType_I64},

{ValType::ExtismValType_I64}, hello_world,

(void *)"Hello again!",

[](void *x) { std::cout << "Free user data" << std::endl; }),

};

Plugin plugin(wasm, true, functions);

const char *input = argc > 1 ? argv[1] : "this is a test";

size_t length = strlen(input);

extism::Buffer output = plugin.call("count_vowels", (uint8_t *)input, length);

std::cout << (char *)output.data << std::endl;

return 0;

}