Function get_current_dir

flex/utils/service_utils.cc:24–39

get current executable's directory

// get current executable's directory
std::string get_current_dir() {
  char buf[1024];
  int dirfd = open("/proc/self/", O_RDONLY | O_DIRECTORY);
  if (dirfd == -1) {
    // Handle error
  }

  ssize_t len = readlinkat(dirfd, "exe", buf, sizeof(buf) - 1);
  if (len == -1) {
    // Handle error
  }
  buf[len] = '\0';
  close(dirfd);
  std::string exe_path(buf);
  return exe_path.substr(0, exe_path.rfind('/'));
}

std::string find_codegen_bin() {
  // first check whether flex_home env exists