98 lines
3.2 KiB
C
Executable File
98 lines
3.2 KiB
C
Executable File
/* ----------------------------------------------------------------------------
|
|
libconfig - A library for processing structured configuration files
|
|
Copyright (C) 2005-2018 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);
|
|
config_set_options(&cfg,
|
|
(CONFIG_OPTION_FSYNC
|
|
| CONFIG_OPTION_SEMICOLON_SEPARATORS
|
|
| CONFIG_OPTION_COLON_ASSIGNMENT_FOR_GROUPS
|
|
| CONFIG_OPTION_OPEN_BRACE_ON_SEPARATE_LINE));
|
|
|
|
/* 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 */
|