+int bam_tagview(int argc, char *argv[])
+{
+ bamFile fp;
+ bam_header_t *header;
+ bam1_t *b;
+ char tag[2];
+ int ret;
+ if (argc < 3) {
+ fprintf(stderr, "Usage: samtools tagview <in.bam> <tag>\n");
+ return 1;
+ }
+ fp = strcmp(argv[1], "-")? bam_open(argv[1], "r") : bam_dopen(fileno(stdin), "r");
+ assert(fp);
+ header = bam_header_read(fp);
+ if (header == 0) {
+ fprintf(stderr, "[bam_view] fail to read the BAM header. Abort!\n");
+ return 1;
+ }
+ tag[0] = argv[2][0]; tag[1] = argv[2][1];
+ b = (bam1_t*)calloc(1, sizeof(bam1_t));
+ while ((ret = bam_read1(fp, b)) >= 0) {
+ uint8_t *d = bam_aux_get(b, tag);
+ if (d) {
+ printf("%s\t%d\t", bam1_qname(b), b->core.flag);
+ if (d[0] == 'Z' || d[0] == 'H') printf("%s\n", bam_aux2Z(d));
+ else if (d[0] == 'f') printf("%f\n", bam_aux2f(d));
+ else if (d[0] == 'd') printf("%lf\n", bam_aux2d(d));
+ else if (d[0] == 'A') printf("%c\n", bam_aux2A(d));
+ else if (d[0] == 'c' || d[0] == 's' || d[0] == 'i') printf("%d\n", bam_aux2i(d));
+ else if (d[0] == 'C' || d[0] == 'S' || d[0] == 'I') printf("%u\n", bam_aux2i(d));
+ else printf("\n");
+ }
+ }
+ if (ret < -1) fprintf(stderr, "[bam_view] truncated file? Continue anyway. (%d)\n", ret);
+ free(b->data); free(b);
+ bam_header_destroy(header);
+ bam_close(fp);
+ return 0;
+}
+