if (strcmp(optarg, "gff") == 0) conf = ti_conf_gff;
else if (strcmp(optarg, "bed") == 0) conf = ti_conf_bed;
else if (strcmp(optarg, "sam") == 0) conf = ti_conf_sam;
if (strcmp(optarg, "gff") == 0) conf = ti_conf_gff;
else if (strcmp(optarg, "bed") == 0) conf = ti_conf_bed;
else if (strcmp(optarg, "sam") == 0) conf = ti_conf_sam;