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tarfile: Make it possible to extract nested tarfiles in memory #1032

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tarfile: Make it possible to extract nested tarfiles in memory #1032

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4 changes: 3 additions & 1 deletion python-stdlib/tarfile/tarfile/__init__.py
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Original file line number Diff line number Diff line change
Expand Up @@ -41,11 +41,13 @@ def read(self, sz=65536):
self.content_len -= sz
return data

def readinto(self, buf):
def readinto(self, buf, size=None):
if self.content_len == 0:
return 0
if len(buf) > self.content_len:
buf = memoryview(buf)[: self.content_len]
if size is not None and len(buf) > size:
buf = memoryview(buf)[:size]
sz = self.f.readinto(buf)
self.content_len -= sz
return sz
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