#include #include #include #include #include "db.h" #define DATABASE "access.db" int main() { extern int errno; DB *dbp; DBT key, data; if ((errno = db_open(DATABASE, DB_BTREE, DB_CREATE, 0664, NULL, NULL, &dbp)) != 0) { fprintf(stderr, "db: %s: %s\n", DATABASE, strerror(errno)); exit (1); } memset(&key, 0, sizeof(key)); memset(&data, 0, sizeof(data)); key.data = "fruit"; key.size = sizeof("fruit"); data.data = "apple"; data.size = sizeof("apple"); switch (errno = dbp->put(dbp, NULL, &key, &data, 0)) { case 0: printf("db: %s: key stored.\n", (char *)key.data); break; default: fprintf(stderr, "db: put: %s\n", strerror(errno)); exit (1); } switch (errno = dbp->get(dbp, NULL, &key, &data, 0)) { case 0: printf("db: %s: key retrieved: data was %s.\n", (char *)key.data, (char *)data.data); break; case DB_NOTFOUND: printf("db: %s: key not found.\n", (char *)key.data); break; default: fprintf(stderr, "db: get: %s\n", strerror(errno)); exit (1); } switch (errno = dbp->del(dbp, NULL, &key, 0)) { case 0: printf("db: %s: key was deleted.\n", (char *)key.data); break; default: fprintf(stderr, "db: del: %s\n", strerror(errno)); exit (1); } switch (errno = dbp->get(dbp, NULL, &key, &data, 0)) { case 0: printf("db: %s: key retrieved: data was %s.\n", (char *)key.data, (char *)data.data); break; case DB_NOTFOUND: printf("db: %s: key not found.\n", (char *)key.data); break; default: fprintf(stderr, "db: get: %s\n", strerror(errno)); exit (1); } switch (errno = dbp->close(dbp, 0)) { case 0: printf("db: database closed.\n"); break; default: fprintf(stderr, "db: get: %s\n", strerror(errno)); exit (1); } exit(0); }