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Show First 20 Lines • Show All 700 Lines • ▼ Show 20 Line(s)	class _fncachevfs(vfsmod.proxyvfs):
def __call__(self, path, mode=b'r', args, *kw):		def __call__(self, path, mode=b'r', args, *kw):
encoded = self.encode(path)		encoded = self.encode(path)
if mode not in (b'r', b'rb') and (		if mode not in (b'r', b'rb') and (
path.startswith(b'data/') or path.startswith(b'meta/')		path.startswith(b'data/') or path.startswith(b'meta/')
):		):
# do not trigger a fncache load when adding a file that already is		# do not trigger a fncache load when adding a file that already is
# known to exist.		# known to exist.
notload = self.fncache.entries is None and self.vfs.exists(encoded)		notload = self.fncache.entries is None and self.vfs.exists(encoded)
if notload and b'a' in mode and not self.vfs.stat(encoded).st_size:		if notload and b'r+' in mode and not self.vfs.stat(encoded).st_size:
# when appending to an existing file, if the file has size zero,		# when appending to an existing file, if the file has size zero,
# it should be considered as missing. Such zero-size files are		# it should be considered as missing. Such zero-size files are
# the result of truncation when a transaction is aborted.		# the result of truncation when a transaction is aborted.
notload = False		notload = False
if not notload:		if not notload:
self.fncache.add(path)		self.fncache.add(path)
return self.vfs(encoded, mode, args, *kw)		return self.vfs(encoded, mode, args, *kw)

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