/* ----------------------------------------------------------------------------

   libconfig - A library for processing structured configuration files

   Copyright (C) 2005-2010  Mark A Lindner

   This file is part of libconfig.

   This library is free software; you can redistribute it and/or

   modify it under the terms of the GNU Lesser General Public License

   as published by the Free Software Foundation; either version 2.1 of

   the License, or (at your option) any later version.

   This library is distributed in the hope that it will be useful, but

   WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

   Lesser General Public License for more details.

   You should have received a copy of the GNU Library General Public

   License along with this library; if not, see

   <http://www.gnu.org/licenses/>.

   ----------------------------------------------------------------------------

*/

#include <stdio.h>

#include <stdlib.h>

#include <libconfig.h>

/* This example reads the configuration file 'example.cfg' and displays

 * some of its contents.

 */

int main(int argc, char **argv)

{

  config_t cfg;

  config_setting_t *setting;

  const char *str;

  config_init(&cfg);

  /* Read the file. If there is an error, report it and exit. */

  if(! config_read_file(&cfg, "example.cfg"))

  {

    fprintf(stderr, "%s:%d - %s\n", config_error_file(&cfg),

            config_error_line(&cfg), config_error_text(&cfg));

    config_destroy(&cfg);

    return(EXIT_FAILURE);

  }

  /* Get the store name. */

  if(config_lookup_string(&cfg, "name", &str))

    printf("Store name: %s\n\n", str);

  else

    fprintf(stderr, "No 'name' setting in configuration file.\n");

  /* Output a list of all books in the inventory. */

  setting = config_lookup(&cfg, "inventory.books");

  if(setting != NULL)

  {

    int count = config_setting_length(setting);

    int i;

    printf("%-30s  %-30s   %-6s  %s\n", "TITLE", "AUTHOR", "PRICE", "QTY");

    for(i = 0; i < count; ++i)

    {

      config_setting_t *book = config_setting_get_elem(setting, i);

      /* Only output the record if all of the expected fields are present. */

      const char *title, *author;

      double price;

      int qty;

      if(!(config_setting_lookup_string(book, "title", &title)

           && config_setting_lookup_string(book, "author", &author)

           && config_setting_lookup_float(book, "price", &price)

           && config_setting_lookup_int(book, "qty", &qty)))

        continue;

      printf("%-30s  %-30s  $%6.2f  %3d\n", title, author, price, qty);

    }

    putchar('\n');

  }

  /* Output a list of all movies in the inventory. */

  setting = config_lookup(&cfg, "inventory.movies");

  if(setting != NULL)

  {

    unsigned int count = config_setting_length(setting);

    unsigned int i;

    printf("%-30s  %-10s   %-6s  %s\n", "TITLE", "MEDIA", "PRICE", "QTY");

    for(i = 0; i < count; ++i)

    {

      config_setting_t *movie = config_setting_get_elem(setting, i);

      /* Only output the record if all of the expected fields are present. */

      const char *title, *media;

      double price;

      int qty;

      if(!(config_setting_lookup_string(movie, "title", &title)

           && config_setting_lookup_string(movie, "media", &media)

           && config_setting_lookup_float(movie, "price", &price)

           && config_setting_lookup_int(movie, "qty", &qty)))

        continue;

      printf("%-30s  %-10s  $%6.2f  %3d\n", title, media, price, qty);

    }

    putchar('\n');

  }

  config_destroy(&cfg);

  return(EXIT_SUCCESS);

}

/* eof */