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Issue #19201: Add support for the 'x' mode to the lzma module.

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Patch by Tim Heaney and Vajrasky Kok.
This commit is contained in:
Nadeem Vawda 2013-10-19 00:06:19 +02:00
parent c516815353
commit 42ca98217c
5 changed files with 51 additions and 13 deletions
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13
Lib/lzma.py
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@ -54,9 +54,9 @@ class LZMAFile(io.BufferedIOBase):
bytes object), in which case the named file is opened, or it can
be an existing file object to read from or write to.
mode can be "r" for reading (default), "w" for (over)writing, or
"a" for appending. These can equivalently be given as "rb", "wb"
and "ab" respectively.
mode can be "r" for reading (default), "w" for (over)writing,
"x" for creating exclusively, or "a" for appending. These can
equivalently be given as "rb", "wb", "xb" and "ab" respectively.
format specifies the container format to use for the file.
If mode is "r", this defaults to FORMAT_AUTO. Otherwise, the
@ -112,7 +112,7 @@ class LZMAFile(io.BufferedIOBase):
self._decompressor = LZMADecompressor(**self._init_args)
self._buffer = b""
self._buffer_offset = 0
elif mode in ("w", "wb", "a", "ab"):
elif mode in ("w", "wb", "a", "ab", "x", "xb"):
if format is None:
format = FORMAT_XZ
mode_code = _MODE_WRITE
@ -426,8 +426,9 @@ def open(filename, mode="rb", *,
object), in which case the named file is opened, or it can be an
existing file object to read from or write to.
The mode argument can be "r", "rb" (default), "w", "wb", "a" or "ab"
for binary mode, or "rt", "wt" or "at" for text mode.
The mode argument can be "r", "rb" (default), "w", "wb", "x", "xb",
"a", or "ab" for binary mode, or "rt", "wt", "xt", or "at" for text
mode.
The format, check, preset and filters arguments specify the
compression settings, as for LZMACompressor, LZMADecompressor and