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#!/usr/bin/env python
''' Jottings to work out format for __function_workspace__ matrix at end
of mat file.
'''
from __future__ import division, print_function, absolute_import
from os.path import join as pjoin, dirname
import sys
from io import BytesIO
from numpy.testing import \
assert_array_equal, \
assert_array_almost_equal, \
assert_equal, \
assert_raises, run_module_suite
from nose.tools import assert_true
import numpy as np
from numpy.compat import asstr
from scipy.io.matlab.mio5 import MatlabObject, MatFile5Writer, \
MatFile5Reader, MatlabFunction
test_data_path = pjoin(dirname(__file__), 'data')
def read_minimat_vars(rdr):
rdr.initialize_read()
mdict = {'__globals__': []}
i = 0
while not rdr.end_of_stream():
hdr, next_position = rdr.read_var_header()
name = asstr(hdr.name)
if name == '':
name = 'var_%d' % i
i += 1
res = rdr.read_var_array(hdr, process=False)
rdr.mat_stream.seek(next_position)
mdict[name] = res
if hdr.is_global:
mdict['__globals__'].append(name)
return mdict
def read_workspace_vars(fname):
fp = open(fname, 'rb')
rdr = MatFile5Reader(fp, struct_as_record=True)
vars = rdr.get_variables()
fws = vars['__function_workspace__']
ws_bs = BytesIO(fws.tostring())
ws_bs.seek(2)
rdr.mat_stream = ws_bs
# Guess byte order.
mi = rdr.mat_stream.read(2)
rdr.byte_order = mi == b'IM' and '<' or '>'
rdr.mat_stream.read(4) # presumably byte padding
mdict = read_minimat_vars(rdr)
fp.close()
return mdict
def test_jottings():
# example
fname = pjoin(test_data_path, 'parabola.mat')
ws_vars = read_workspace_vars(fname)
if __name__ == "__main__":
run_module_suite()
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