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#!/usr/bin/python3
# Copyright (c) 2008-2025 the MRtrix3 contributors.
#
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
#
# Covered Software is provided under this License on an "as is"
# basis, without warranty of any kind, either expressed, implied, or
# statutory, including, without limitation, warranties that the
# Covered Software is free of defects, merchantable, fit for a
# particular purpose or non-infringing.
# See the Mozilla Public License v. 2.0 for more details.
#
# For more details, see http://www.mrtrix.org/.
# note: deal with these warnings properly when we drop support for Python 2:
# pylint: disable=unspecified-encoding
import sys, os.path
if len (sys.argv) != 3:
sys.stderr.write("usage: convert_bruker 2dseq header.mih\n")
sys.exit (0)
#if os.path.basename (sys.argv[1]) != '2dseq':
#print ("expected '2dseq' file as first argument")
#sys.exit (1)
if not sys.argv[2].endswith ('.mih'):
sys.stderr.write("expected .mih suffix as the second argument\n")
sys.exit (1)
def main():
with open (os.path.join (os.path.dirname (sys.argv[1]), 'reco')) as file_reco:
lines = file_reco.read().split ('##$')
with open (os.path.join (os.path.dirname (sys.argv[1]), '../../acqp')) as file_acqp:
lines += file_acqp.read().split ('##$')
with open (os.path.join (os.path.dirname (sys.argv[1]), '../../method')) as file_method:
lines += file_method.read().split ('##$')
for line in lines:
line = line.lower()
if line.startswith ('reco_size='):
mat_size = line.splitlines()[1].split()
print ('mat_size', mat_size)
elif line.startswith ('nslices='):
nslices = line.split('=')[1].split()[0]
print ('nslices', nslices)
elif line.startswith ('acq_time_points='):
nacq = len (line.split('\n',1)[1].split())
print ('nacq', nacq)
elif line.startswith ('reco_wordtype='):
wtype = line.split('=')[1].split()[0]
print ('wtype', wtype)
elif line.startswith ('reco_byte_order='):
byteorder = line.split('=')[1].split()[0]
print ('byteorder', byteorder)
elif line.startswith ('pvm_spatresol='):
res = line.splitlines()[1].split()
print ('res', res)
elif line.startswith ('pvm_spackarrslicedistance='):
slicethick = line.splitlines()[1].split()[0]
print ('slicethick', slicethick)
elif line.startswith ('pvm_dweffbval='):
bval = line.split('\n',1)[1].split()
print ('bval', bval)
elif line.startswith ('pvm_dwgradvec='):
bvec = line.split('\n',1)[1].split()
print ('bvec', bvec)
with open (sys.argv[2], 'w') as file_out:
file_out.write ('mrtrix image\ndim: ' + mat_size[0] + ',' + mat_size[1])
if len(mat_size) > 2:
file_out.write (',' + str(mat_size[2]))
else:
try:
nslices #pylint: disable=pointless-statement
file_out.write (',' + str(nslices))
except:
pass
try:
nacq #pylint: disable=pointless-statement
file_out.write (',' + str(nacq))
except:
pass
file_out.write ('\nvox: ' + str(res[0]) + ',' + str(res[1]))
if len(res) > 2:
file_out.write (',' + str(res[2]))
else:
try:
slicethick #pylint: disable=pointless-statement
file_out.write (',' + str(slicethick))
except:
pass
try:
nacq #pylint: disable=pointless-statement
file_out.write (',')
except:
pass
file_out.write ('\ndatatype: ')
if wtype == '_16bit_sgn_int':
file_out.write ('int16')
elif wtype == '_32bit_sgn_int':
file_out.write ('int32')
if byteorder=='littleendian':
file_out.write ('le')
else:
file_out.write ('be')
file_out.write ('\nlayout: +0,+1')
try:
nslices #pylint: disable=pointless-statement
file_out.write (',+2')
except:
pass
try:
nacq #pylint: disable=pointless-statement
file_out.write (',+3')
except:
pass
file_out.write ('\nfile: ' + sys.argv[1] + '\n')
try:
assert len(bvec) == 3*len(bval)
bvec = [ bvec[n:n+3] for n in range(0,len(bvec),3) ]
for direction, value in zip(bvec, bval):
file_out.write ('dw_scheme: ' + direction[0] + ',' + direction[1] + ',' + str(-float(direction[2])) + ',' + value + '\n')
except:
pass
main()
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