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Documentation/sphinx: fix kernel-doc decode for non-utf-8 locale

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On python3, Popen() universal_newlines=True converts the subprocess
stdout to unicode text using a codec based on user preferences. Given
LANG indicating ascii and utf-8 stdout from the subprocess, you'd get:

WARNING: kernel-doc '../scripts/kernel-doc -rst -enable-lineno
../drivers/media/dvb-core/demux.h' processing failed with: 'ascii' codec can't
decode byte 0xe2 in position 6368: ordinal not in range(128)

Fix this by dropping universal_newlines=True and replacing the implicit
LANG specific decode with an explicit utf-8 decode. This also gets rid
of the annoying conditional code for python 2 vs. 3.

Fixes: ba35018593 ("Documentation/sphinx: fix kernel-doc extension on python3")
Reference: http://mid.mail-archive.com/54c23e8e-89c0-5cea-0dcc-e938952c5642@infradead.org
Reported-and-tested-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
This commit is contained in:
Jani Nikula 2017-08-31 22:21:29 +03:00 committed by Jonathan Corbet
parent a27bfcab5c
commit 86c0f046a8
1 changed files with 3 additions and 5 deletions
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8
Documentation/sphinx/kerneldoc.py
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@ -27,6 +27,7 @@
# Please make sure this works on both python2 and python3.
#
import codecs
import os
import subprocess
import sys
@ -88,13 +89,10 @@ class KernelDocDirective(Directive):
try:
env.app.verbose('calling kernel-doc \'%s\'' % (" ".join(cmd)))
p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE, universal_newlines=True)
p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
out, err = p.communicate()
# python2 needs conversion to unicode.
# python3 with universal_newlines=True returns strings.
if sys.version_info.major < 3:
out, err = unicode(out, 'utf-8'), unicode(err, 'utf-8')
out, err = codecs.decode(out, 'utf-8'), codecs.decode(err, 'utf-8')
if p.returncode != 0:
sys.stderr.write(err)