A rough and dirty way to expand string containing path using GNU wordexp

expand-path.cpp

// ref: https://linux.die.net/man/3/wordexp
#include <iostream>
#include <string>
#include <wordexp.h>
using namespace std;

std::string expandPath(const std::string &str) {
  wordexp_t p;
  char** w;
  wordexp(str.c_str(), &p, 0);
  w = p.we_wordv;
  std::string ret;
  if (p.we_wordc > 0) {
    ret = w[0];
  }
  wordfree(&p);
  return ret;
}

int main() {
  std::string path = expandPath("~rightson/bin");
  cout << path << endl;
  // output: /home/rightson/bin
  return 0;
}