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backend_ps: Do not write to a temporary file unless using an external distiller #1826

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merged 1 commit into from Mar 19, 2013
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backend_ps: Do not write to a temporary file unless using an external distiller #1826

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45 changes: 30 additions & 15 deletions lib/matplotlib/backends/backend_ps.py
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Expand Up @@ -5,6 +5,7 @@
# 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 @@ -1105,8 +1106,21 @@ def write(self, *kl, **kwargs):
self.figure.set_facecolor(origfacecolor)
self.figure.set_edgecolor(origedgecolor)

fd, tmpfile = mkstemp()
with io.open(fd, 'wb') as raw_fh:
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:
if sys.version_info[0] >= 3:
fh = io.TextIOWrapper(raw_fh, encoding="ascii")
else:
Expand Down Expand Up @@ -1181,20 +1195,21 @@ def write(self, *kl, **kwargs):
if not isEPSF: print("%%EOF", file=fh)
fh.flush()

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

if passed_in_file_object:
with open(tmpfile, 'rb') as fh:
outfile.write(fh.read())
else:
with open(outfile, 'w') as fh:
pass
mode = os.stat(outfile).st_mode
shutil.move(tmpfile, outfile)
os.chmod(outfile, mode)
if passed_in_file_object:
with open(tmpfile, 'rb') as fh:
outfile.write(fh.read())
else:
with open(outfile, 'w') as fh:
pass
mode = os.stat(outfile).st_mode
shutil.move(tmpfile, outfile)
os.chmod(outfile, mode)

def _print_figure_tex(self, outfile, format, dpi, facecolor, edgecolor,
orientation, isLandscape, papertype,
Expand Down