static PyObject *
DiscoDB_keys(DiscoDB *self)
{
struct ddb_cursor *cursor = ddb_keys(self->discodb);
if (cursor == NULL)
if (ddb_has_error(self->discodb))
return NULL;
return DiscoDBIter_new(&DiscoDBIterEntryType, self, cursor);
}
int main(int argc, char **argv)
{
if (argc < 3)
usage();
struct ddb *db = open_discodb(argv[1]);
if (!strcmp(argv[2], "-info"))
print_info(db);
else if (!strcmp(argv[2], "-keys"))
print_cursor(db, ddb_keys(db));
else if (!strcmp(argv[2], "-values"))
print_cursor(db, ddb_values(db));
else if (!strcmp(argv[2], "-uvalues"))
print_cursor(db, ddb_unique_values(db));
else if (!strcmp(argv[2], "-item")){
if (argc < 4){
fprintf(stderr, "Specify query\n");
exit(1);
}
struct ddb_entry e;
e.data = argv[3];
e.length = strlen(argv[3]);
print_cursor(db, ddb_getitem(db, &e));
}else if (!strcmp(argv[2], "-cnf")){
if (argc < 4){
fprintf(stderr, "Specify query\n");
exit(1);
}
int num_q = 0;
struct ddb_query_clause *q = parse_cnf(&argv[3], argc - 3, &num_q);
print_cursor(db, ddb_query(db, q, num_q));
free(q[0].terms);
free(q);
}else
usage();
ddb_free(db);
return 0;
}
struct ddb_cons *ddb_cons_ddb(struct ddb *db)
{
struct ddb_cons *cons;
struct ddb_cursor *keys = NULL, *vals = NULL;
const struct ddb_entry *k, *v;
int errno = 0;
if (!(cons = ddb_cons_new()))
goto error;
if (!(keys = ddb_keys(db)))
goto error;
while ((k = ddb_next(keys, &errno))) {
if (!(vals = ddb_getitem(db, k)))
goto error;
while ((v = ddb_next(vals, &errno)))
if (ddb_cons_add(cons, k, v))
goto error;
if (errno)
goto error;
ddb_free_cursor(vals);
}
if (errno)
goto error;
ddb_free_cursor(keys);
return cons;
error:
if (cons)
ddb_cons_free(cons);
if (keys)
ddb_free_cursor(keys);
if (vals)
ddb_free_cursor(vals);
return NULL;
}
