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Location: MD/arcos/libconfig-1.4.9/examples/c/example1.c - annotation
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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' 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 */
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