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Avoid deprecated 'U' mode when opening files

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Instead, use PSFile() wrapper to handle all newline in the EPS spec.

Update line ending tests to handle all combinations of '\n' and '\r'.

Fixes warning "DeprecationWarning: 'U' mode is deprecated" in tests.
This commit is contained in:
Jon Dufresne 2016-11-01 06:16:44 -07:00
parent 885c9cb206
commit 1ba14783d2
2 changed files with 7 additions and 61 deletions
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56
Tests/test_file_eps.py
View File

@ -1,7 +1,6 @@
from helper import unittest, PillowTestCase, hopper
from PIL import Image, EpsImagePlugin
from PIL._util import py3
import io
# Our two EPS test files (they are identical except for their bounding boxes)
@ -196,41 +195,15 @@ class TestFileEps(PillowTestCase):
self.assertEqual(t.readline().strip('\r\n'), 'baz', ending)
self.assertEqual(t.readline().strip('\r\n'), 'bif', ending)
def _test_readline_stringio(self, test_string, ending):
# check all the freaking line endings possible
try:
import StringIO
except ImportError:
# don't skip, it skips everything in the parent test
return
t = StringIO.StringIO(test_string)
def _test_readline_io_psfile(self, test_string, ending):
f = io.BytesIO(test_string.encode('latin-1'))
t = EpsImagePlugin.PSFile(f)
self._test_readline(t, ending)
def _test_readline_io(self, test_string, ending):
if py3:
t = io.StringIO(test_string)
else:
t = io.StringIO(unicode(test_string))
self._test_readline(t, ending)
def _test_readline_file_universal(self, test_string, ending):
f = self.tempfile('temp.txt')
with open(f, 'wb') as w:
if py3:
w.write(test_string.encode('UTF-8'))
else:
w.write(test_string)
with open(f, 'rU') as t:
self._test_readline(t, ending)
def _test_readline_file_psfile(self, test_string, ending):
f = self.tempfile('temp.txt')
with open(f, 'wb') as w:
if py3:
w.write(test_string.encode('UTF-8'))
else:
w.write(test_string)
w.write(test_string.encode('latin-1'))
with open(f, 'rb') as r:
t = EpsImagePlugin.PSFile(r)
@ -239,29 +212,12 @@ class TestFileEps(PillowTestCase):
def test_readline(self):
# check all the freaking line endings possible from the spec
# test_string = u'something\r\nelse\n\rbaz\rbif\n'
line_endings = ['\r\n', '\n']
not_working_endings = ['\n\r', '\r']
line_endings = ['\r\n', '\n', '\n\r', '\r']
strings = ['something', 'else', 'baz', 'bif']
for ending in line_endings:
s = ending.join(strings)
# Native Python versions will pass these endings.
# self._test_readline_stringio(s, ending)
# self._test_readline_io(s, ending)
# self._test_readline_file_universal(s, ending)
self._test_readline_file_psfile(s, ending)
for ending in not_working_endings:
# these only work with the PSFile, while they're in spec,
# they're not likely to be used
s = ending.join(strings)
# Native Python versions may fail on these endings.
# self._test_readline_stringio(s, ending)
# self._test_readline_io(s, ending)
# self._test_readline_file_universal(s, ending)
self._test_readline_io_psfile(s, ending)
self._test_readline_file_psfile(s, ending)
def test_open_eps(self):

12
src/PIL/EpsImagePlugin.py
View File

@ -26,7 +26,6 @@ import os
import sys
from . import Image, ImageFile
from ._binary import i32le as i32
from ._util import py3
__version__ = "0.5"
@ -206,16 +205,7 @@ class EpsImageFile(ImageFile.ImageFile):
# Rewrap the open file pointer in something that will
# convert line endings and decode to latin-1.
try:
if py3:
# Python3, can use bare open command.
fp = open(self.fp.name, "Ur", encoding='latin-1')
else:
# Python2, no encoding conversion necessary
fp = open(self.fp.name, "Ur")
except:
# Expect this for bytesio/stringio
fp = PSFile(self.fp)
fp = PSFile(self.fp)
# go to offset - start of "%!PS"
fp.seek(offset)