def write_log(self, outfname=None, outftype=None):
"""TODO: Update docstring."""
if outfname is None:
outfname = self.config['LOG_FNAME_OUT']
outftype = self.config['LOG_FTYPE_OUT']
if outftype == FTYPE_PICKLE:
import pickle
with open(outfname, 'wb') as outfile:
for wtime in self.wslots:
pickle.dump(wtime, outfile)
elif outftype == FTYPE_XML:
from backend.xml import XmlBackend
# XXX This assumes that `write_log' was called soon after
# `write_tasks'.
mode = 'r+b' if self._xml_header_written else 'wb'
with open_backed_up(outfname, mode,
suffix=self.config['BACKUP_SUFFIX']) \
as outfile:
if self._xml_header_written:
# Skip before the last line (assumed to read
# "</wyrdinData>").
outfile.seek(-len(b'</wyrdinData>\n'), 2)
XmlBackend.write_workslots(self.wslots, outfile,
not self._xml_header_written)
if self._xml_header_written:
outfile.write(b'</wyrdinData>\n')
self._xml_header_written = True
else:
raise NotImplementedError("Session.write_log() is not "
"implemented for this type of files.")
