comparison mercurial/posix.py @ 45942:89a2afe31e82

formating: upgrade to black 20.8b1

This required a couple of small tweaks to un-confuse black, but now it
works. Big formatting changes come from:

 * Dramatically improved collection-splitting logic upstream
 * Black having a strong (correct IMO) opinion that """ is better than '''

Differential Revision: https://phab.mercurial-scm.org/D9430

45941:346af7687c6f

    # https://github.com/python/cpython/blob/v3.7.3/Modules/_io/fileio.c#L474
    posixfile = open


def split(p):
    '''Same as posixpath.split, but faster

    >>> import posixpath
    >>> for f in [b'/absolute/path/to/file',
    ...           b'relative/path/to/file',
    ...           b'file_alone',

    ...           b'/multiple/path//separators',
    ...           b'/file_at_root',
    ...           b'///multiple_leading_separators_at_root',
    ...           b'']:
    ...     assert split(f) == posixpath.split(f), f
    '''
    ht = p.rsplit(b'/', 1)
    if len(ht) == 1:
        return b'', p
    nh = ht[0].rstrip(b'/')
    if nh:

        # Turn off all +x bits
        os.chmod(f, s & 0o666)


def copymode(src, dst, mode=None, enforcewritable=False):
    '''Copy the file mode from the file at path src to dst.
    If src doesn't exist, we're using mode instead. If mode is None, we're
    using umask.'''
    try:
        st_mode = os.lstat(src).st_mode & 0o777
    except OSError as inst:
        if inst.errno != errno.ENOENT:
            raise

                unlink(name)
            return False


def checkosfilename(path):
    '''Check that the base-relative path is a valid filename on this platform.
    Returns None if the path is ok, or a UI string describing the problem.'''
    return None  # on posix platforms, every path is ok


def getfsmountpoint(dirpath):
    '''Get the filesystem mount point from a directory (best-effort)

    Returns None if we are unsure. Raises OSError on ENOENT, EPERM, etc.
    '''
    return getattr(osutil, 'getfsmountpoint', lambda x: None)(dirpath)


def getfstype(dirpath):
    '''Get the filesystem type name from a directory (best-effort)

    Returns None if we are unsure. Raises OSError on ENOENT, EPERM, etc.
    '''
    return getattr(osutil, 'getfstype', lambda x: None)(dirpath)


def setbinary(fd):
    pass

normcasefallback = normcase

if pycompat.isdarwin:

    def normcase(path):
        '''
        Normalize a filename for OS X-compatible comparison:
        - escape-encode invalid characters
        - decompose to NFD
        - lowercase
        - omit ignored characters [200c-200f, 202a-202e, 206a-206f,feff]

        'cafe\\xcc\\x81'
        >>> normcase(b'\\xc3\\x89')
        'e\\xcc\\x81'
        >>> normcase(b'\\xb8\\xca\\xc3\\xca\\xbe\\xc8.JPG') # issue3918
        '%b8%ca%c3\\xca\\xbe%c8.jpg'
        '''

        try:
            return encoding.asciilower(path)  # exception for non-ASCII
        except UnicodeDecodeError:
            return normcasefallback(path)

    # treated as case sensitive, even though underlying NTFS is case
    # insensitive.

    # default mount points
    cygwinmountpoints = sorted(
        [b"/usr/bin", b"/usr/lib", b"/cygdrive",], reverse=True
    )

    # use upper-ing as normcase as same as NTFS workaround
    def normcase(path):
        pathlen = len(path)

    """Return True if the stat object st is from the current user."""
    return st.st_uid == os.getuid()


def findexe(command):
    '''Find executable for command searching like which does.
    If command is a basename then PATH is searched for command.
    PATH isn't searched if command is an absolute or relative path.
    If command isn't found None is returned.'''
    if pycompat.sysplatform == b'OpenVMS':
        return command

    def findexisting(executable):
        b'Will return executable if existing file'

_wantedkinds = {stat.S_IFREG, stat.S_IFLNK}


def statfiles(files):
    '''Stat each file in files. Yield each stat, or None if a file does not
    exist or has a type we don't care about.'''
    lstat = os.lstat
    getkind = stat.S_IFMT
    for nf in files:
        try:
            st = lstat(nf)

45942:89a2afe31e82

    # https://github.com/python/cpython/blob/v3.7.3/Modules/_io/fileio.c#L474
    posixfile = open


def split(p):
    """Same as posixpath.split, but faster

    >>> import posixpath
    >>> for f in [b'/absolute/path/to/file',
    ...           b'relative/path/to/file',
    ...           b'file_alone',

    ...           b'/multiple/path//separators',
    ...           b'/file_at_root',
    ...           b'///multiple_leading_separators_at_root',
    ...           b'']:
    ...     assert split(f) == posixpath.split(f), f
    """
    ht = p.rsplit(b'/', 1)
    if len(ht) == 1:
        return b'', p
    nh = ht[0].rstrip(b'/')
    if nh:

        # Turn off all +x bits
        os.chmod(f, s & 0o666)


def copymode(src, dst, mode=None, enforcewritable=False):
    """Copy the file mode from the file at path src to dst.
    If src doesn't exist, we're using mode instead. If mode is None, we're
    using umask."""
    try:
        st_mode = os.lstat(src).st_mode & 0o777
    except OSError as inst:
        if inst.errno != errno.ENOENT:
            raise

                unlink(name)
            return False


def checkosfilename(path):
    """Check that the base-relative path is a valid filename on this platform.
    Returns None if the path is ok, or a UI string describing the problem."""
    return None  # on posix platforms, every path is ok


def getfsmountpoint(dirpath):
    """Get the filesystem mount point from a directory (best-effort)

    Returns None if we are unsure. Raises OSError on ENOENT, EPERM, etc.
    """
    return getattr(osutil, 'getfsmountpoint', lambda x: None)(dirpath)


def getfstype(dirpath):
    """Get the filesystem type name from a directory (best-effort)

    Returns None if we are unsure. Raises OSError on ENOENT, EPERM, etc.
    """
    return getattr(osutil, 'getfstype', lambda x: None)(dirpath)


def setbinary(fd):
    pass

normcasefallback = normcase

if pycompat.isdarwin:

    def normcase(path):
        """
        Normalize a filename for OS X-compatible comparison:
        - escape-encode invalid characters
        - decompose to NFD
        - lowercase
        - omit ignored characters [200c-200f, 202a-202e, 206a-206f,feff]

        'cafe\\xcc\\x81'
        >>> normcase(b'\\xc3\\x89')
        'e\\xcc\\x81'
        >>> normcase(b'\\xb8\\xca\\xc3\\xca\\xbe\\xc8.JPG') # issue3918
        '%b8%ca%c3\\xca\\xbe%c8.jpg'
        """

        try:
            return encoding.asciilower(path)  # exception for non-ASCII
        except UnicodeDecodeError:
            return normcasefallback(path)

    # treated as case sensitive, even though underlying NTFS is case
    # insensitive.

    # default mount points
    cygwinmountpoints = sorted(
        [
            b"/usr/bin",
            b"/usr/lib",
            b"/cygdrive",
        ],
        reverse=True,
    )

    # use upper-ing as normcase as same as NTFS workaround
    def normcase(path):
        pathlen = len(path)

    """Return True if the stat object st is from the current user."""
    return st.st_uid == os.getuid()


def findexe(command):
    """Find executable for command searching like which does.
    If command is a basename then PATH is searched for command.
    PATH isn't searched if command is an absolute or relative path.
    If command isn't found None is returned."""
    if pycompat.sysplatform == b'OpenVMS':
        return command

    def findexisting(executable):
        b'Will return executable if existing file'

_wantedkinds = {stat.S_IFREG, stat.S_IFLNK}


def statfiles(files):
    """Stat each file in files. Yield each stat, or None if a file does not
    exist or has a type we don't care about."""
    lstat = os.lstat
    getkind = stat.S_IFMT
    for nf in files:
        try:
            st = lstat(nf)