def maf2mvf(args):
"""Main method"""
# ESTABLISH MAF
args.qprint("Starting ConvertMAF2MVF")
maf = MultiAlignFile(args)
args.qprint("MAF Established")
# ESTABLISH MVF
mvf = MultiVariantFile(args.out, 'write', overwrite=args.overwrite)
args.qprint("MVF output initialized")
# PROCESS SAMPLE INFO
contig_translate = {1: 1}
samplelabels = [s.split(':')[0] for s in args.sample_tags.split(',')]
args.qprint("Sample tags processed: {}".format(samplelabels))
if args.ref_tag not in samplelabels:
raise IndexError("--ref-tag not in the tags listed in --sample-tags")
samplelabels.remove(args.ref_tag)
samplelabels.insert(0, args.ref_tag)
mvf.sample_ids = samplelabels[:]
mvf.sample_indices = list(range(len(mvf.sample_ids)))
for i, label in enumerate(samplelabels):
mvf.sample_data[i] = {'id': label, 'index': i}
mvf.reset_max_sample()
mvf.metadata['sourceformat'] = maf.metadata['sourceformat']
mvf.metadata.notes.append(args.command_string)
# WRITE MVF HEADER
mvf.write_data(mvf.get_header())
args.qprint("MAF Headers Written")
mvfentries = []
nentry = 0
total_entries = 0
args.qprint("Begin data conversion")
for pos, length, msa in maf:
for sname in samplelabels:
if sname not in msa:
msa[sname] = '-'*length
msa['contig'] = 1
for i in range(length):
mvf_alleles = encode_mvfstring(
''.join(msa[s][i].strip() for s in samplelabels))
if mvf_alleles:
mvfentries.append(
(contig_translate.get(msa['contig']),
pos+i, (mvf_alleles,)))
nentry += 1
if nentry == args.line_buffer:
total_entries += nentry
mvf.write_entries(mvfentries, encoded=True)
args.qprint("{} entries written".format(total_entries))
mvfentries = []
nentry = 0
if mvfentries:
total_entries += nentry
mvf.write_entries(mvfentries)
args.qprint("{} entries written".format(total_entries))
args.qprint("Complete.")
return ''
def vcf2mvf(args=None):
"""Main method for vcf2mvf"""
sepchars = dict([("TAB", "\t"), ("SPACE", " "), ("DBLSPACE", " "),
("COMMA", ","), ("MIXED", None)])
args.fieldsep = sepchars[args.field_sep]
# ESTABLISH VCF
args.qprint("Opening input VCF: {}".format(args.vcf))
vcf = VariantCallFile(args.vcf, indexcontigs=(not args.no_autoindex))
# ESTABLISH MVF
args.qprint("Establishing output MVF: {}".format(args.out))
mvf = MultiVariantFile(args.out, 'write', overwrite=args.overwrite)
mvf.notes.append(args.command_string)
mvf.metadata['mvfversion'] = args.versionx
# PROCESS CONTIG INFO
args.qprint("Processing VCF headers.")
vcfcontigs = vcf.metadata['contigs'].copy()
args.qprint("{} contigs found.".format(len(vcfcontigs)))
contig_translate = {}
if args.contig_ids:
for cid, cvcf, cmvf in (x.split(';') for x in args.contig_ids):
try:
cid = int(cid)
except ValueError:
pass
assert cvcf in [vcfcontigs[x]['label'] for x in vcfcontigs]
for vid in vcfcontigs:
if vcfcontigs[vid]['label'] == cvcf:
contig_translate[cvcf] = [cid, cmvf]
if cid in mvf.metadata['contigs']:
raise RuntimeError(
'Contig id {} is not unique'.format(cid))
mvf.metadata['contigs'][cid] = vcfcontigs[vid].copy()
if cmvf in mvf.get_contig_labels():
raise RuntimeError(
'Contig label {} is not unique'.format(cmvf))
mvf.metadata['contigs'][cid]['label'] = cmvf[:]
mvf.reset_max_contig()
mvf.max_contig_index -= 1
args.qprint("Processing contigs.")
static_contig_ids = list(mvf.get_contig_ids())
for vcid in vcfcontigs:
vlabel = vcfcontigs[vcid]['label']
if vlabel not in static_contig_ids:
newindex = mvf.get_next_contig_index()
if ((is_int(vlabel) or len(vlabel) < 3)
and vlabel not in static_contig_ids):
newid = vlabel[:]
else:
newid = str(newindex)
mvf.contig_indices.append(newindex)
mvf.contig_ids.append(newid)
mvf.contig_data[newindex] = vcfcontigs[vcid].copy()
static_contig_ids.append(newid)
contig_translate[vlabel] = [newindex, vlabel]
mvf.reset_max_contig()
new_contigs = [(x, mvf.contig_data[x]['label'])
for x in mvf.contig_indices]
if args.skip_contig_label_check is False:
args.qprint("Checking contigs for label/id overlap errors.")
xids = [x[0] for x in new_contigs]
xlabels = [x[1] for x in new_contigs]
xintersect = set(xids).intersection(xlabels)
if xintersect:
for i, (newid, newlabel) in enumerate(new_contigs):
if i % 100 == 0:
args.qprint("{} contigs processed".format(i))
if newid in xlabels[:i] or newid in xlabels[i + 1:]:
# if newid in xlabels:
# if xlabels.index(newid) != i:
raise RuntimeError("Error contig id {} is the same as"
" the label for another contig"
" ({})".format(newid,
xlabels.index(newid)))
if newlabel in xids[:i] or newlabel in xids[i + 1:]:
# if newlabel in xids:
# if xids.index(newlabel) != i:
raise RuntimeError("Error contig label {} is the same"
"as the id for another contig"
"({})".format(newlabel,
xids.index(newlabel)))
# PROCESS SAMPLE INFO
args.qprint("Processing samples.")
samplelabels = [args.ref_label] + vcf.metadata['samples'][:]
if args.alleles_from:
args.alleles_from = args.alleles_from.split(':')
samplelabels += args.alleles_from
if args.sample_replace:
newsample = [
x.split(':') if ':' in tuple(x) else tuple([x, x])
for x in args.sample_replace
]
unmatched = list(enumerate(samplelabels))
for old, new in newsample:
labelmatched = False
for j, (i, name) in enumerate(unmatched):
if old in name:
samplelabels[i] = new
labelmatched = j
break
if labelmatched is not False:
del unmatched[labelmatched]
mvf.sample_indices = list(range(len(samplelabels)))
mvf.sample_ids = samplelabels[:]
for i, label in enumerate(samplelabels):
mvf.sample_data[i] = {'id': label}
mvf.metadata['ncol'] = len(mvf.sample_ids)
mvf.max_sample_index = len(mvf.sample_ids)
mvf.metadata['sourceformat'] = vcf.metadata['sourceformat']
# WRITE MVF HEADER
mvf.write_data(mvf.get_header())
mvfentries = []
nentry = 0
args.qprint("Processing VCF entries.")
for vcfrecord in vcf.iterentries(args):
mvfstring = ''.join(vcfrecord['genotypes'])
if args.filter_nonref_empty is True:
if all(x in 'Xx-?' for x in mvfstring[1:]):
continue
mvf_alleles = encode_mvfstring(mvfstring)
if args.out_flavor in ('dnaqual', ):
qual_alleles = encode_mvfstring(''.join(vcfrecord['qscores']))
if mvf_alleles:
mvfentries.append(
(contig_translate.get(vcfrecord['contig'])[0],
vcfrecord['coord'],
((mvf_alleles,
qual_alleles) if args.out_flavor in ('dnaqual', ) else
(mvf_alleles, ))))
nentry += 1
if nentry == args.line_buffer:
mvf.write_entries(mvfentries, encoded=True)
mvfentries = []
nentry = 0
if mvfentries:
mvf.write_entries(mvfentries)
mvfentries = []
return ''
def filter_mvf(args):
"""Main method"""
args.qprint("Running FilterMVF")
if args.more_help is True:
modulehelp()
sys.exit()
if args.mvf is None and args.test is None:
raise RuntimeError("No input file specified with --mvf")
if args.out is None and args.test is None:
raise RuntimeError("No output file specified with --out")
# Establish Input MVF
if args.test is not None:
ncol = args.test_nchar or len(args.test.split()[1])
else:
mvf = MultiVariantFile(args.mvf, 'read')
ncol = mvf.metadata['ncol']
args.qprint("Input MVF read with {} columns.".format(ncol))
# Create Actionset
if args.labels:
for i in range(len(args.actions)):
action = args.actions[i]
arr = action.split(':')
if arr[0] in ('collapsepriority', 'collapsemerge'):
arr[1] = ','.join([
str(mvf.sample_id_to_index[x])
for x in arr[1].split(',')])
if arr[0] in ('columns', 'allelegroup',
'notmultigroup', 'reqsample'):
for j in range(1, len(arr)):
arr[j] = ','.join([
str(mvf.sample_id_to_index[x])
for x in arr[j].split(',')])
args.actions[i] = ':'.join(arr)
removed_columns = set([])
for i in range(len(args.actions)):
action = args.actions[i]
arr = action.split(':')
if arr[0] in ('collapsepriority', 'collapsemerge'):
tmp_arr = arr[1][:]
arr[1] = ','.join([
str(int(x) - len([y for y in removed_columns if y < int(x)]))
for x in arr[1].split(',')])
removed_columns.update([int(x) for x in tmp_arr.split(',')[1:]])
print(arr)
print(removed_columns)
if arr[0] in ('columns', 'allelegroup',
'notmultigroup', 'reqsample'):
for j in range(1, len(arr)):
arr[j] = ','.join([
str(int(x) - len([y for y in removed_columns if y < int(x)]))
for x in arr[j].split(',')])
args.actions[i] = ':'.join(arr)
actionset = build_actionset(args.actions, ncol)
args.qprint("Actions established.")
args.qprint(actionset)
# TESTING MODE
if args.test:
loc, alleles = args.test.split()
linefail = False
transformed = False
# invar = invariant (single character)
# refvar (all different than reference, two chars)
# onecov (single coverage, + is second character)
# onevar (one variable base, + is third character)
# full = full alleles (all chars)
if args.verbose:
print(alleles)
linetype = get_linetype(alleles)
sys.stdout.write("MVF Encoding type '{}' detected\n".format(linetype))
for actionname, actiontype, actionfunc, actionarg in actionset:
sys.stdout.write("Applying action {} ({}): ".format(
actionname, actiontype))
if actiontype == 'filter':
if not actionfunc(alleles, linetype):
linefail = True
sys.stdout.write("Filter Fail\n")
break
sys.stdout.write("Filter Pass\n")
elif actiontype == 'transform':
transformed = True
alleles = actionfunc(alleles, linetype)
linetype = get_linetype(alleles)
if linetype == 'empty':
linefail = True
sys.stdout.write("Transform removed all alleles\n")
break
sys.stdout.write("Transform result {}\n".format(alleles))
elif actiontype == 'location':
loc = loc.split(':')
loc[1] = int(loc[1])
if actionfunc(loc) is False:
linefail = True
sys.stdout.write("Location Fail\n")
break
sys.stdout.write("Location Pass\n")
if linefail is False:
if transformed:
if linetype == 'full':
alleles = encode_mvfstring(alleles)
if alleles:
test_output = "{}\t{}\n".format(loc, alleles)
sys.stdout.write("Final output = {}\n".format(
test_output))
else:
sys.stdout.write("Transform removed all alleles\n")
else:
sys.stdout.write("No changes applied\n")
sys.stdout.write("Final output = {}\n".format(args.test))
sys.exit()
# MAIN MODE
# Set up file handler
outmvf = MultiVariantFile(args.out, 'write', overwrite=args.overwrite)
outmvf.copy_headers_from(mvf)
removed_indices = set([])
# reprocess header if actions are used that filter columns
if any(x == y[0] for x in ('columns', 'collapsepriority', 'collapsemerge')
for y in actionset):
for actionname, actiontype, actionfunc, actionarg in actionset:
if actionname == 'columns':
if args.labels:
oldindices = [outmvf.sample_id_to_index[int(x)]
for x in actionarg[0]]
else:
oldindices = [int(x) for x in actionarg[0]]
elif actionname in ('collapsepriority', 'collapsemerge'):
actionarg[0] = [x - len([y for y in removed_indices if y < x])
for x in actionarg[0]]
oldindices = [x for x in outmvf.sample_indices
if x not in actionarg[0][1:]]
outmvf.sample_ids = outmvf.get_sample_ids(oldindices)
outmvf.sample_data = dict(
(i, outmvf.sample_data[oldindices[i]])
for i, _ in enumerate(oldindices))
if actionname in ('collapsepriority', 'collapsemerge'):
if len(actionarg) == 2:
outmvf.sample_data[actionarg[0][0]]['id'] = actionarg[1][0]
outmvf.sample_ids[actionarg[0][0]] = actionarg[1][0]
outmvf.sample_indices = list(range(len(oldindices)))
outmvf.metadata['ncol'] = len(outmvf.sample_indices)
outmvf.notes.append(args.command_string)
outmvf.write_data(outmvf.get_header())
args.qprint("Output MVF established.")
# End header editing
linebuffer = []
nbuffer = 0
args.qprint("Processing Entries.")
write_total = 0
for chrom, pos, allelesets in mvf.iterentries(decode=False):
linefail = False
transformed = False
# invar = invariant (single character)
# refvar (all different than reference, two chars)
# onecov (single coverage, + is second character)
# onevar (one variable base, + is third character)
# full = full alleles (all chars)
alleles = allelesets[0]
linetype = get_linetype(alleles)
if linetype == 'empty':
continue
if args.verbose is True:
sys.stdout.write(" {} {} ".format(alleles, linetype))
for actionname, actiontype, actionfunc, _ in actionset:
if actiontype == 'filter':
linefail = not actionfunc(alleles, linetype)
elif actiontype == 'transform':
transformed = True
alleles = actionfunc(alleles, linetype)
linetype = get_linetype(alleles)
linefail = linetype == 'empty'
elif actiontype == 'location':
linefail = not actionfunc([chrom, pos])
if linefail:
break
if linefail is False:
if transformed:
if linetype == 'full':
alleles = mvf.encode(alleles)
if not alleles:
linefail = True
nbuffer += 1
linebuffer.append((chrom, pos, (alleles,)))
if args.verbose:
sys.stdout.write("{}\n".format(alleles))
if nbuffer == args.line_buffer:
write_total += args.line_buffer
args.qprint("{} entries written. Total written: {}.".format(
args.line_buffer, write_total))
outmvf.write_entries(linebuffer)
linebuffer = []
nbuffer = 0
elif args.verbose:
sys.stdout.write("FAIL\n")
if linebuffer:
outmvf.write_entries(linebuffer)
write_total += len(linebuffer)
args.qprint("{} entries written. Total written: {}.".format(
args.line_buffer, write_total))
linebuffer = []
return ''
