toml_sample.c

#include "toml.h"
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

static void fatal(const char *msg, const char *msg1) {
  fprintf(stderr, "ERROR: %s%s\n", msg, msg1 ? msg1 : "");
  exit(1);
}

int main() {
  FILE *fp;
  char errbuf[200];

  // 1. Read and parse toml file
  fp = fopen("sample.toml", "r");
  if (!fp) {
    fatal("cannot open sample.toml - ", strerror(errno));
  }

  toml_table_t *conf = toml_parse_file(fp, errbuf, sizeof(errbuf));
  fclose(fp);

  if (!conf) {
    fatal("cannot parse - ", errbuf);
  }

  // 2. Traverse to a table.
  toml_table_t *server = toml_table_in(conf, "server");
  if (!server) {
    fatal("missing [server]", "");
  }

  // 3. Extract values
  toml_datum_t host = toml_string_in(server, "host");
  if (!host.ok) {
    fatal("cannot read server.host", "");
  }

  toml_array_t *portarray = toml_array_in(server, "port");
  if (!portarray) {
    fatal("cannot read server.port", "");
  }

  printf("host: %s\n", host.u.s);
  printf("port: ");
  for (int i = 0;; i++) {
    toml_datum_t port = toml_int_at(portarray, i);
    if (!port.ok)
      break;
    printf("%d ", (int)port.u.i);
  }
  printf("\n");

  // 4. Free memory
  free(host.u.s);
  toml_free(conf);
  return 0;
}