comparison mercurial/pycompat.py @ 30472:277f4fe6d01a

py3: provide bytes stdin/out/err through util module

Since standard streams are TextIO on Python 3, we can't use sys.stdin/out/err
directly. Fortunately we can get the underlying BytesIO via .buffer as long as
the streams aren't replaced by e.g. StringIO.

stdin/out/err are provided through util so we can wrap them by platform API.

30471:00c9ac4ce816

    # A bytes version of os.name.
    osname = os.name.encode('ascii')
    ospathsep = os.pathsep.encode('ascii')
    ossep = os.sep.encode('ascii')

    # Since Python 3 converts argv to wchar_t type by Py_DecodeLocale() on Unix,
    # we can use os.fsencode() to get back bytes argv.
    #
    # https://hg.python.org/cpython/file/v3.5.1/Programs/python.c#l55
    #

        return filename

    osname = os.name
    ospathsep = os.pathsep
    ossep = os.sep
    sysargv = sys.argv

stringio = io.StringIO
empty = _queue.Empty
queue = _queue.Queue

30472:277f4fe6d01a

    # A bytes version of os.name.
    osname = os.name.encode('ascii')
    ospathsep = os.pathsep.encode('ascii')
    ossep = os.sep.encode('ascii')

    # TODO: .buffer might not exist if std streams were replaced; we'll need
    # a silly wrapper to make a bytes stream backed by a unicode one.
    stdin = sys.stdin.buffer
    stdout = sys.stdout.buffer
    stderr = sys.stderr.buffer

    # Since Python 3 converts argv to wchar_t type by Py_DecodeLocale() on Unix,
    # we can use os.fsencode() to get back bytes argv.
    #
    # https://hg.python.org/cpython/file/v3.5.1/Programs/python.c#l55
    #

        return filename

    osname = os.name
    ospathsep = os.pathsep
    ossep = os.sep
    stdin = sys.stdin
    stdout = sys.stdout
    stderr = sys.stderr
    sysargv = sys.argv

stringio = io.StringIO
empty = _queue.Empty
queue = _queue.Queue