def low_memory_bam(bam_fn, sample, out_handle, args):
if args.genomic:
raise ValueError(
"low-memory option is not compatible with genomic coordinates.")
precursors = args.precursors
bam_fn = _sam_to_bam(bam_fn)
bam_fn = _bam_sort(bam_fn)
mode = "r" if bam_fn.endswith("sam") else "rb"
handle = pysam.Samfile(bam_fn, mode)
lines = []
current = None
for line in handle:
if not current or current == line.query_name:
lines.append(line)
current = line.query_name
else:
reads = _read_lines(lines, precursors, handle, args)
ann = annotate(reads, args.matures, args.precursors, quiet=True)
gff_lines = body.create(ann,
args.database,
sample,
args,
quiet=True)
body.write_body_on_handle(gff_lines, out_handle)
current = line.query_name
lines = []
lines.append(line)
reads = _read_lines(lines, precursors, handle, args)
ann = annotate(reads, args.matures, args.precursors, quiet=True)
gff_lines = body.create(ann, args.database, sample, args, quiet=True)
body.write_body_on_handle(gff_lines, out_handle)
def reader(args):
"""
Realign BAM hits to miRBAse to get better accuracy and annotation
"""
if args.low_memory:
read.reader(args)
return None
samples = []
database = mapper.guess_database(args)
args.database = database
precursors = fasta.read_precursor(args.hairpin, args.sps)
args.precursors = precursors
matures = mapper.read_gtf_to_precursor(args.gtf)
args.matures = matures
# TODO check numbers of miRNA and precursors read
# TODO print message if numbers mismatch
out_dts = dict()
if args.keep_name and len(args.files) > 1:
logger.warning("--keep-name when running multiple samples\n"
"can generate wrong results if the\n"
"name read is different across sample\n"
"for the same sequence.")
for fn in args.files:
fn = op.normpath(fn)
if args.format != "gff":
sample = op.splitext(op.basename(fn))[0]
samples.append(sample)
fn_out = op.join(args.out, sample + ".%s" % args.out_format)
if args.format == "BAM":
reads = _read_bam(fn, args)
elif args.format == "seqbuster":
reads = seqbuster.read_file(fn, args)
elif args.format == "srnabench":
out_dts[fn] = srnabench.read_file(fn, args)
elif args.format == "prost":
reads = prost.read_file(fn, precursors, database, args.gtf)
elif args.format == "isomirsea":
out_dts[fn] = isomirsea.read_file(fn, args)
elif args.format == "manatee":
out_dts[fn] = manatee.read_file(fn, database, args)
elif args.format == "optimir":
out_dts[fn] = optimir.read_file(fn, args)
elif args.format == "gff":
samples.extend(header.read_samples(fn))
out_dts[fn] = body.read(fn, args)
continue
if args.format not in ["isomirsea", "srnabench", "manatee", 'optimir']:
ann = annotate(reads, matures, precursors)
out_dts[fn] = body.create(ann, database, sample, args)
h = header.create([sample], database, header.make_tools(args.format))
_write(out_dts[fn], h, fn_out, args)
# merge all reads for all samples into one dict
if args.low_memory:
return None
merged = merge.merge(out_dts, samples)
fn_merged_out = op.join(args.out, "mirtop.%s" % args.out_format)
_write(merged,
header.create(samples, database, header.make_tools([args.format])),
fn_merged_out, args)
def low_memory_genomic_bam(bam_fn, sample, out_handle, args):
logger.info("Reading BAM file in low memory mode.")
logger.warning("This is under development and variants can be unexact.")
precursors = args.precursors
bam_fn = _sam_to_bam(bam_fn)
bam_fn = _bam_sort(bam_fn)
database = guess_database(args)
bed_fn = os.path.join(args.out, os.path.basename(bam_fn) + ".bed")
logger.info("Making bed file.")
_bed(bam_fn, bed_fn)
logger.info("Intersecting bed file.")
intersect_fn = intersect(bed_fn, args.gtf)
logger.info("Loading database.")
# TODO this'll return conn_reads and conn_counts
conn = _read_lifted_bam_alpha(intersect_fn, bam_fn, args)
rows = sql.select_all_reads(conn)
lines = []
current = None
logger.info("Analyzing database.")
for row in rows:
if not current or current == row[0]:
lines.append(row)
current = row[0]
else:
# TODO counts of sequence = conn_counts.query UID
# it could be counts only same location UID+chrom+start, or counts all UID
reads = _read_lifted_lines(lines, precursors, database)
ann = annotate(reads, args.matures, args.precursors, quiet=True)
gff_lines = body.create(ann,
args.database,
sample,
args,
quiet=True)
body.write_body_on_handle(gff_lines, out_handle)
current = row[0]
lines = []
lines.append(row)
reads = _read_lifted_lines(lines, precursors, database)
ann = annotate(reads, args.matures, args.precursors, quiet=True)
gff_lines = body.create(ann, args.database, sample, args, quiet=True)
body.write_body_on_handle(gff_lines, out_handle)
conn.close()
logger.info("Done")
def read_file_low_memory(fn, sample, args, out_handle):
precursors = args.precursors
reads = defaultdict(hits)
col_fix = 0
with open(fn) as handle:
header = handle.readline()
if header.find("freq") < 0:
col_fix = 1
for line in handle:
reads = _read_line(line, col_fix, precursors)
ann = annotate(reads, args.matures, args.precursors, quiet=True)
gff_lines = body.create(ann,
args.database,
sample,
args,
quiet=True)
body.write_body_on_handle(gff_lines, out_handle)
def reader(args):
"""
Realign BAM hits to miRBAse to get better accuracy and annotation
"""
samples = []
database = mapper.guess_database(args.gtf)
args.database = database
precursors = fasta.read_precursor(args.hairpin, args.sps)
args.precursors = precursors
matures = mapper.read_gtf_to_precursor(args.gtf)
args.matures = matures
# TODO check numbers of miRNA and precursors read
# TODO print message if numbers mismatch
out_dts = dict()
for fn in args.files:
if args.format != "gff":
sample = op.splitext(op.basename(fn))[0]
samples.append(sample)
fn_out = op.join(args.out, sample + ".%s" % args.out_format)
if args.format == "BAM":
reads = _read_bam(fn, args)
elif args.format == "seqbuster":
reads = seqbuster.read_file(fn, args)
elif args.format == "srnabench":
out_dts[fn] = srnabench.read_file(fn, args)
elif args.format == "prost":
reads = prost.read_file(fn, precursors, database, args.gtf)
elif args.format == "isomirsea":
out_dts[fn] = isomirsea.read_file(fn, args)
elif args.format == "gff":
samples.extend(header.read_samples(fn))
out_dts[fn] = body.read(fn, args)
continue
if args.format not in ["isomirsea", "srnabench"]:
ann = annotate(reads, matures, precursors)
out_dts[fn] = body.create(ann, database, sample, args)
h = header.create([sample], database, "")
_write(out_dts[fn], h, fn_out)
# merge all reads for all samples into one dict
merged = merge.merge(out_dts, samples)
fn_merged_out = op.join(args.out, "mirtop.%s" % args.out_format)
_write(merged, header.create(samples, database, ""), fn_merged_out)
def annotate(fn, read_file, load=False, create=True):
import argparse
args = argparse.Namespace()
args.hairpin = "data/examples/annotate/hairpin.fa"
args.sps = "hsa"
args.gtf = "data/examples/annotate/hsa.gff3"
args.add_extra = True
args.out_format = "gtf"
from mirtop.mirna import fasta, mapper
precursors = fasta.read_precursor(args.hairpin, args.sps)
matures = mapper.read_gtf_to_precursor(args.gtf)
args.precursors = precursors
args.matures = matures
args.database = mapper.guess_database(args.gtf)
from mirtop.mirna import annotate
from mirtop.gff import body
if not load:
reads = read_file(fn, args)
else:
reads = read_file
if create:
ann = annotate.annotate(reads, matures, precursors)
body = body.create(ann, "miRBase21", "Example", args)
return body
def annotate(fn, read_file, load=False, create=True):
import argparse
args = argparse.Namespace()
args.hairpin = "data/examples/annotate/hairpin.fa"
args.sps = "hsa"
args.gtf = "data/examples/annotate/hsa.gff3"
args.add_extra = True
args.out_format = "gtf"
from mirtop.mirna import fasta, mapper
precursors = fasta.read_precursor(args.hairpin, args.sps)
matures = mapper.read_gtf_to_precursor(args.gtf)
args.precursors = precursors
args.matures = matures
args.database = mapper.guess_database(args.gtf)
from mirtop.mirna import annotate
from mirtop.gff import body
if not load:
reads = read_file(fn, args)
else:
reads = read_file
if create:
ann = annotate.annotate(reads, matures, precursors)
body = body.create(ann, "miRBase21", "Example", args)
return body
def _analyze_line(line, precursors, database, sample, sep, args):
start_idx = 10
end_idx = 11
attr_idx = 15
query_name = line[3]
sequence = line[4]
if str(line).find(get_primary_transcript(guess_database(args))) < 0: # only working with mirbase
return None
logger.debug(("READ::line name:{0}").format(line))
if sequence and sequence.find("N") > -1:
return None
chrom = line[attr_idx].strip().split("Name=")[-1]
start = line[1]
end = line[2]
strand = line[5]
counts = float(line[6])
Filter = "Pass"
reads = dict()
if not start:
return None
if strand == "+":
start = int(start) - int(line[start_idx]) + 1
else:
start = int(line[end_idx]) - int(end)
iso = isomir()
iso.align = line
iso.set_pos(start, len(sequence))
logger.debug("READ::From BAM start %s end %s at chrom %s" % (iso.start, iso.end, chrom))
if len(precursors[chrom]) < start + len(sequence):
logger.debug("READ::%s start + %s sequence size are bigger than"
" size precursor %s" % (
chrom,
len(sequence),
len(precursors[chrom])))
iso.subs, iso.add, iso.cigar = filter.tune(
sequence, precursors[chrom],
start, None)
logger.debug("READ::After tune start %s end %s" % (iso.start, iso.end))
logger.debug("READ::iso add %s iso subs %s" % (iso.add, iso.subs))
idu = make_id(sequence)
reads[query_name] = hits()
reads[query_name].set_sequence(sequence)
reads[query_name].counts = counts
reads[query_name].sequence = sequence
reads[query_name].set_precursor(chrom, iso)
reads = annotate(reads, args.matures, args.precursors, quiet=True)
gff_line = body.create(reads, args.database, sample, args, quiet=True)
if start not in gff_line[chrom]:
return None
line = gff_line[chrom][start][0][4]
logger.debug("READ::line:%s" % line)
if args.add_extra:
extra = variant_with_nt(line, args.precursors,
args.matures)
line = "%s Changes %s;" % (line, extra)
line = paste_columns(feature(line), sep=sep)
return {'chrom': chrom,
'start': start,
'name': query_name,
'mirna': reads[query_name].precursors[chrom].mirna,
'line': [idu, chrom, counts, sample, line]}