From 399a76e67bca0beb4849ea90c4f40803fbd06ed3 Mon Sep 17 00:00:00 2001 From: Yen Chi Hsuan Date: Sun, 21 Feb 2016 03:28:25 +0800 Subject: [PATCH] [utils] Jython support: tolerate missing fcntl module --- youtube_dl/utils.py | 20 +++++++++++++++----- 1 file changed, 15 insertions(+), 5 deletions(-) diff --git a/youtube_dl/utils.py b/youtube_dl/utils.py index a2c6780ca..17747be26 100644 --- a/youtube_dl/utils.py +++ b/youtube_dl/utils.py @@ -1217,13 +1217,23 @@ if sys.platform == 'win32': raise OSError('Unlocking file failed: %r' % ctypes.FormatError()) else: - import fcntl + # Some platforms, such as Jython, is missing fcntl + try: + import fcntl - def _lock_file(f, exclusive): - fcntl.flock(f, fcntl.LOCK_EX if exclusive else fcntl.LOCK_SH) + def _lock_file(f, exclusive): + fcntl.flock(f, fcntl.LOCK_EX if exclusive else fcntl.LOCK_SH) - def _unlock_file(f): - fcntl.flock(f, fcntl.LOCK_UN) + def _unlock_file(f): + fcntl.flock(f, fcntl.LOCK_UN) + except ImportError: + UNSUPPORTED_MSG = 'file locking is not supported on this platform' + + def _lock_file(f, exclusive): + raise IOError(UNSUPPORTED_MSG) + + def _unlock_file(f): + raise IOError(UNSUPPORTED_MSG) class locked_file(object):