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Matplotlib savefig() closes BytesIO object when saving in postscript format #1862

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Merged
merged 1 commit into from
Mar 27, 2013
Merged

Matplotlib savefig() closes BytesIO object when saving in postscript format #1862

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40 changes: 19 additions & 21 deletions lib/matplotlib/backends/backend_ps.py
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Original file line number Diff line number Diff line change
Expand Up @@ -5,7 +5,6 @@
# PY3KTODO: Get rid of "print >>fh" syntax

from __future__ import division, print_function
import contextlib
import glob, math, os, shutil, sys, time
def _fn_name(): return sys._getframe(1).f_code.co_name
import io
Expand Down Expand Up @@ -974,11 +973,6 @@ def print_ps(self, outfile, *args, **kwargs):
def print_eps(self, outfile, *args, **kwargs):
return self._print_ps(outfile, 'eps', *args, **kwargs)






def _print_ps(self, outfile, format, *args, **kwargs):
papertype = kwargs.pop("papertype", rcParams['ps.papersize'])
papertype = papertype.lower()
Expand Down Expand Up @@ -1106,21 +1100,7 @@ def write(self, *kl, **kwargs):
self.figure.set_facecolor(origfacecolor)
self.figure.set_edgecolor(origedgecolor)

if rcParams['ps.usedistiller']:
# We are going to use an external program to process the output.
# Write to a temporary file.
fd, tmpfile = mkstemp()
context_manager = io.open(fd, 'wb')
else:
# Write directly to outfile.
if passed_in_file_object:
@contextlib.contextmanager
def null_context(value):
yield value
context_manager = null_context(outfile)
else:
context_manager = open(outfile, 'wb')
with context_manager as raw_fh:
def print_figure_impl():
if sys.version_info[0] >= 3:
fh = io.TextIOWrapper(raw_fh, encoding="ascii")
else:
Expand Down Expand Up @@ -1195,6 +1175,24 @@ def null_context(value):
if not isEPSF: print("%%EOF", file=fh)
fh.flush()

if sys.version_info[0] >= 3:
fh.detach()

if rcParams['ps.usedistiller']:
# We are going to use an external program to process the output.
# Write to a temporary file.
fd, tmpfile = mkstemp()
with io.open(fd, 'wb') as raw_fh:
print_figure_impl()
else:
# Write directly to outfile.
if passed_in_file_object:
raw_fh = outfile
print_figure_impl()
else:
with open(outfile, 'wb') as raw_fh:
print_figure_impl()

if rcParams['ps.usedistiller']:
if rcParams['ps.usedistiller'] == 'ghostscript':
gs_distill(tmpfile, isEPSF, ptype=papertype, bbox=bbox)
Expand Down