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Issue #20243: TarFile no longer raise ReadError when opened in write mode.

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This commit is contained in:
Serhiy Storchaka 2014-01-18 16:14:49 +02:00
commit aee0e63ed0
3 changed files with 35 additions and 10 deletions
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27
Lib/tarfile.py
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@ -1604,19 +1604,22 @@ class TarFile(object):
except (ImportError, AttributeError):
raise CompressionError("gzip module is not available")
extfileobj = fileobj is not None
try:
fileobj = gzip.GzipFile(name, mode + "b", compresslevel, fileobj)
except OSError:
if fileobj is not None and mode == 'r':
raise ReadError("not a gzip file")
raise
try:
t = cls.taropen(name, mode, fileobj, **kwargs)
except OSError:
if not extfileobj and fileobj is not None:
fileobj.close()
if fileobj is None:
raise
raise ReadError("not a gzip file")
fileobj.close()
if mode == 'r':
raise ReadError("not a gzip file")
raise
except:
if not extfileobj and fileobj is not None:
fileobj.close()
fileobj.close()
raise
t._extfileobj = False
return t
@ -1641,7 +1644,9 @@ class TarFile(object):
t = cls.taropen(name, mode, fileobj, **kwargs)
except (OSError, EOFError):
fileobj.close()
raise ReadError("not a bzip2 file")
if mode == 'r':
raise ReadError("not a bzip2 file")
raise
t._extfileobj = False
return t
@ -1664,7 +1669,9 @@ class TarFile(object):
t = cls.taropen(name, mode, fileobj, **kwargs)
except (lzma.LZMAError, EOFError):
fileobj.close()
raise ReadError("not an lzma file")
if mode == 'r':
raise ReadError("not an lzma file")
raise
t._extfileobj = False
return t