hts-nim bgzip read example

htsbgz.nim

import hts

var b: BGZ
open(b, "example.txt.gz", mode="rb")
set_threads(b, 2)

var kstr: kstring_t
kstr.l = 0
kstr.m = 0
kstr.s = nil
var p = kstr.addr

    
while true:
  if b.read_line(p) <= 0:
    break
  echo tell(b), " : ", $kstr.s

discard close(b)