+++ /dev/null
-#include <stdlib.h>
-#include <string.h>
-#include "bam.h"
-
-// currently, this function ONLY works if each read has one hit
-void bam_mating_core(bamFile in, bamFile out)
-{
- bam_header_t *header;
- bam1_t *b[2];
- int curr, has_prev;
-
- header = bam_header_read(in);
- bam_header_write(out, header);
-
- b[0] = bam_init1();
- b[1] = bam_init1();
- curr = 0; has_prev = 0;
- while (bam_read1(in, b[curr]) >= 0) {
- bam1_t *cur = b[curr], *pre = b[1-curr];
- if (has_prev) {
- if (strcmp(bam1_qname(cur), bam1_qname(pre)) == 0) { // identical pair name
- cur->core.mtid = pre->core.tid; cur->core.mpos = pre->core.pos;
- pre->core.mtid = cur->core.tid; pre->core.mpos = cur->core.pos;
- if (pre->core.tid == cur->core.tid && !(cur->core.flag&(BAM_FUNMAP|BAM_FMUNMAP))
- && !(pre->core.flag&(BAM_FUNMAP|BAM_FMUNMAP)))
- {
- uint32_t cur5, pre5;
- cur5 = (cur->core.flag&BAM_FREVERSE)? bam_calend(&cur->core, bam1_cigar(cur)) : cur->core.pos;
- pre5 = (pre->core.flag&BAM_FREVERSE)? bam_calend(&pre->core, bam1_cigar(pre)) : pre->core.pos;
- cur->core.isize = pre5 - cur5; pre->core.isize = cur5 - pre5;
- } else cur->core.isize = pre->core.isize = 0;
- if (pre->core.flag&BAM_FREVERSE) cur->core.flag |= BAM_FMREVERSE;
- else cur->core.flag &= ~BAM_FMREVERSE;
- if (cur->core.flag&BAM_FREVERSE) pre->core.flag |= BAM_FMREVERSE;
- else pre->core.flag &= ~BAM_FMREVERSE;
- if (cur->core.flag & BAM_FUNMAP) { pre->core.flag |= BAM_FMUNMAP; pre->core.flag &= ~BAM_FPROPER_PAIR; }
- if (pre->core.flag & BAM_FUNMAP) { cur->core.flag |= BAM_FMUNMAP; cur->core.flag &= ~BAM_FPROPER_PAIR; }
- bam_write1(out, pre);
- bam_write1(out, cur);
- has_prev = 0;
- } else { // unpaired or singleton
- pre->core.mtid = -1; pre->core.mpos = -1; pre->core.isize = 0;
- if (pre->core.flag & BAM_FPAIRED) {
- pre->core.flag |= BAM_FMUNMAP;
- pre->core.flag &= ~BAM_FMREVERSE & ~BAM_FPROPER_PAIR;
- }
- bam_write1(out, pre);
- }
- } else has_prev = 1;
- curr = 1 - curr;
- }
- if (has_prev) bam_write1(out, b[1-curr]);
- bam_header_destroy(header);
- bam_destroy1(b[0]);
- bam_destroy1(b[1]);
-}
-
-int bam_mating(int argc, char *argv[])
-{
- bamFile in, out;
- if (argc < 3) {
- fprintf(stderr, "samtools fixmate <in.nameSrt.bam> <out.nameSrt.bam>\n");
- return 1;
- }
- in = (strcmp(argv[1], "-") == 0)? bam_dopen(fileno(stdin), "r") : bam_open(argv[1], "r");
- out = (strcmp(argv[2], "-") == 0)? bam_dopen(fileno(stdout), "w") : bam_open(argv[2], "w");
- bam_mating_core(in, out);
- bam_close(in); bam_close(out);
- return 0;
-}