104 lines
2.9 KiB
C
104 lines
2.9 KiB
C
#include <stdio.h>
|
|
//for use of exit()
|
|
#include <stdlib.h>
|
|
//for use of libconfig
|
|
#include <libconfig.h>
|
|
|
|
int main(int argc, char *argv[]) {
|
|
fprintf(stdout,"main() Started...\n");
|
|
|
|
/*read command line*/
|
|
if (argc > 1){
|
|
printf("main() argv[1]: %s\n", argv[1]);
|
|
}else{
|
|
fprintf(stderr, "Usage: %s <path to config file>\n", argv[0]);
|
|
exit(1);
|
|
}
|
|
|
|
config_t cfg;
|
|
config_setting_t *setting;
|
|
const char *str;
|
|
|
|
/*initialise new and EMPTY config*/
|
|
config_init(&cfg);
|
|
|
|
/* Read the file. If there is an error, report it and exit. */
|
|
if(! config_read_file(&cfg, argv[1]))
|
|
{
|
|
fprintf(stderr, "%s:%d - %s\n", config_error_file(&cfg),
|
|
config_error_line(&cfg), config_error_text(&cfg));
|
|
/*destroy config, BUT NOT the structure*/
|
|
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);
|
|
fprintf(stdout, "count: %d\n", count);
|
|
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);
|
|
fprintf(stdout, "count: %d\n", count);
|
|
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);
|
|
fprintf(stdout,"main() Done.\n");
|
|
return(EXIT_SUCCESS);
|
|
}
|