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  • Committer: Jelmer Vernooij
  • Date: 2017-07-23 22:06:41 UTC
  • mfrom: (6738 trunk)
  • mto: This revision was merged to the branch mainline in revision 6739.
  • Revision ID: jelmer@jelmer.uk-20170723220641-69eczax9bmv8d6kk
Merge trunk, address review comments.

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breezy/__init__.py
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    The use of intern() may defer breakage is but is not enough, the string
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    object should be secure against module reloading and during teardown.
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    """
 
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    is_py3 = sys.version_info > (3,)
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    try:
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        import ctypes
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        old_ptr = ctypes.c_void_p.in_dll(ctypes.pythonapi,
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            "Py_FileSystemDefaultEncoding")
 
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        if is_py3:
 
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            has_enc = ctypes.c_int.in_dll(ctypes.pythonapi,
 
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                "Py_HasFileSystemDefaultEncoding")
 
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            as_utf8 = ctypes.PYFUNCTYPE(
 
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                ctypes.POINTER(ctypes.c_char), ctypes.py_object)(
 
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                    ("PyUnicode_AsUTF8", ctypes.pythonapi))
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    except (ImportError, ValueError):
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        return # No ctypes or not CPython implementation, do nothing
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    new_ptr = ctypes.cast(ctypes.c_char_p(intern(new_enc)), ctypes.c_void_p)
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    old_ptr.value = new_ptr.value
 
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    if is_py3:
 
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        new_enc = sys.intern(new_enc)
 
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        enc_ptr = as_utf8(new_enc)
 
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        has_enc.value = 1
 
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    else:
 
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        new_enc = intern(new_enc)
 
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        enc_ptr = ctypes.c_char_p(new_enc)
 
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    old_ptr.value = ctypes.cast(enc_ptr, ctypes.c_void_p).value
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    if sys.getfilesystemencoding() != new_enc:
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        raise RuntimeError("Failed to change the filesystem default encoding")
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    return new_enc