read_id
name = read_id(&data, i + numid); /* read (repo relative) Ids */
evr = read_id(&data, i + numid);
id = read_id(&data, i + numid);
id = read_id(&data, numid);
type = read_id(&data, numid);
keys[i].size = read_id(&data, keys[i].type == REPOKEY_TYPE_CONSTANTID ? numid + numrel : 0);
keys[i].storage = read_id(&data, 0);
id = read_id(&data, 0);
maxsize = read_id(&data, 0);
allsize = read_id(&data, 0);