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/* ----------------------------------------------------------------------------
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', adds a new
* movie record to the movies list, and writes the updated configuration to
* 'updated.cfg'.
*/
int main(int argc, char **argv)
{
static const char *output_file = "updated.cfg";
config_t cfg;
config_setting_t *root, *setting, *movie;
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);
}
/* Find the 'movies' setting. Add intermediate settings if they don't yet
* exist.
*/
root = config_root_setting(&cfg);
setting = config_setting_get_member(root, "inventory");
if(!setting)
setting = config_setting_add(root, "inventory", CONFIG_TYPE_GROUP);
setting = config_setting_get_member(setting, "movies");
if(!setting)
setting = config_setting_add(setting, "movies", CONFIG_TYPE_LIST);
/* Create the new movie entry. */
movie = config_setting_add(setting, NULL, CONFIG_TYPE_GROUP);
setting = config_setting_add(movie, "title", CONFIG_TYPE_STRING);
config_setting_set_string(setting, "Buckaroo Banzai");
setting = config_setting_add(movie, "media", CONFIG_TYPE_STRING);
config_setting_set_string(setting, "DVD");
setting = config_setting_add(movie, "price", CONFIG_TYPE_FLOAT);
config_setting_set_float(setting, 12.99);
setting = config_setting_add(movie, "qty", CONFIG_TYPE_INT);
config_setting_set_float(setting, 20);
/* Write out the updated configuration. */
if(! config_write_file(&cfg, output_file))
{
fprintf(stderr, "Error while writing file.\n");
config_destroy(&cfg);
return(EXIT_FAILURE);
}
fprintf(stderr, "Updated configuration successfully written to: %s\n",
output_file);
config_destroy(&cfg);
return(EXIT_SUCCESS);
}
/* eof */
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