Python stat.S_ISLNK Examples

def list_item(path):
	try:
		_stat = os.lstat(path)

		if path.endswith(os.path.sep):
			path = path.rsplit(os.path.sep, 1)[0]

		name = os.path.basename(path)

		if stat.S_ISLNK(_stat.st_mode):
			try:
				name += ' -> ' + os.readlink(path)
			except:
				pass

		return {
			'name': common.decode2utf8(name),
			'type': file_op.identifytype(path),
			'size': common.size_human_readable(_stat.st_size),
			'ts': time_op.timestamp2string(int(_stat.st_mtime))
		}
	except Exception as e:
		return None 

def assert_islink(path, to=None, msg=None):
    """Assert that path exists and is a symlink.
    
    If to is specified, also check that it is the target of the symlink.
    """
    path = _strpath(path)
    st = _stat_for_assert(path, False, msg)
    if not stat.S_ISLNK(st.st_mode):
        if msg is None:
            msg = "Path exists, but is not a symlink: %r" % path
        raise AssertionError(msg)
    
    if to is not None:
        to = _strpath(to)
        target = os.readlink(path)
        # TODO: Normalise the target to an absolute path?
        if target != to:
            if msg is None:
                msg = _link_target_msg.format(path=path, expected=to, actual=target)
            raise AssertionError(msg) 

def info(self, path):
        s = self.ftp.stat(path)
        if S_ISDIR(s.st_mode):
            t = "directory"
        elif S_ISLNK(s.st_mode):
            t = "link"
        else:
            t = "file"
        return {
            "name": path + "/" if t == "directory" else path,
            "size": s.st_size,
            "type": t,
            "uid": s.st_uid,
            "gid": s.st_gid,
            "time": s.st_atime,
            "mtime": s.st_mtime,
        } 

def test_symlink_file_existing_src(smb_share):
    src_filename = "%s\\file.txt" % smb_share
    dst_filename = "%s\\link.txt" % smb_share

    with smbclient.open_file(src_filename, mode='w') as fd:
        fd.write(u"content")

    smbclient.symlink(src_filename, dst_filename)

    actual_files = smbclient.listdir(smb_share)
    assert 'link.txt' in actual_files
    assert 'file.txt' in actual_files

    actual = smbclient.lstat(dst_filename)
    assert stat.S_ISLNK(actual.st_mode)
    assert actual.st_file_attributes == (
        FileAttributes.FILE_ATTRIBUTE_REPARSE_POINT | FileAttributes.FILE_ATTRIBUTE_ARCHIVE) 

def sizeClassifier(path, min_size=DEFAULTS['min_size']):
    """Sort a file into a group based on on-disk size.

    :param paths: See :func:`fastdupes.groupify`

    :param min_size: Files smaller than this size (in bytes) will be ignored.
    :type min_size: :class:`__builtins__.int`

    :returns: See :func:`fastdupes.groupify`

    .. todo:: Rework the calling of :func:`~os.stat` to minimize the number of
        calls. It's a fairly significant percentage of the time taken according
        to the profiler.
    """
    filestat = _stat(path)
    if stat.S_ISLNK(filestat.st_mode):
        return  # Skip symlinks.

    if filestat.st_size < min_size:
        return  # Skip files below the size limit

    return filestat.st_size 

def test_symlink_relative_src(smb_share):
    src_filename = "%s\\dir1\\file.txt" % smb_share
    dst_filename = "%s\\dir2\\link.txt" % smb_share

    smbclient.mkdir("%s\\dir1" % smb_share)
    smbclient.mkdir("%s\\dir2" % smb_share)

    with smbclient.open_file(src_filename, mode='w') as fd:
        fd.write(u"content")

    smbclient.symlink("..\\dir1\\file.txt", dst_filename)

    with smbclient.open_file(dst_filename) as fd:
        assert fd.read() == u"content"

    actual = smbclient.lstat(dst_filename)
    assert stat.S_ISLNK(actual.st_mode)
    assert actual.st_file_attributes == (
        FileAttributes.FILE_ATTRIBUTE_REPARSE_POINT | FileAttributes.FILE_ATTRIBUTE_ARCHIVE) 

def mode_filetype(mode):
    mode = stat.S_IFMT(mode)
    dic = {
            stat.S_ISFIFO: "fifo file",
            stat.S_ISCHR: "character device",
            stat.S_ISDIR: "directory",
            stat.S_ISBLK: "block device",
            stat.S_ISREG: "regular file",
            stat.S_ISLNK: "symbolic link",
            stat.S_ISSOCK: "socket",
            stat.S_ISDOOR: "door",
            }
    for test_func, name in dic.items():
        if test_func(mode):
            return name
    return "???" 

def __hashEntry(self, prefix, entry, s):
        if stat.S_ISREG(s.st_mode):
            digest = self.__index.check(prefix, entry, s, hashFile)
        elif stat.S_ISDIR(s.st_mode):
            digest = self.__hashDir(prefix, entry)
        elif stat.S_ISLNK(s.st_mode):
            digest = self.__index.check(prefix, entry, s, DirHasher.__hashLink)
        elif stat.S_ISBLK(s.st_mode) or stat.S_ISCHR(s.st_mode):
            digest = struct.pack("<L", s.st_rdev)
        elif stat.S_ISFIFO(s.st_mode):
            digest = b''
        else:
            digest = b''
            logging.getLogger(__name__).warning("Unknown file: %s", entry)

        return digest 

def __call__(self, step):
        slavever = step.slaveVersion('stat')
        if not slavever:
            raise BuildSlaveTooOldError("slave is too old, does not know "
                                        "about stat")

        def commandComplete(cmd):
            if cmd.rc != 0:
                return False

            s = cmd.updates["stat"][-1]
            filemode = s[stat.ST_MODE]
            if stat.S_ISREG(filemode) or stat.S_ISLNK(filemode):
                # True only if this is a file or a link and not any other file
                # system object.
                return True
            else:
                return False

        cmd = LoggedRemoteCommand('stat', {'file': self.filename})
        d = step.runCommand(cmd)
        d.addCallback(lambda res: commandComplete(cmd))
        return d 

def findall(self):
        """Find all files under the base and set ``allfiles`` to the absolute
        pathnames of files found.
        """
        from stat import S_ISREG, S_ISDIR, S_ISLNK

        self.allfiles = allfiles = []
        root = self.base
        stack = [root]
        pop = stack.pop
        push = stack.append

        while stack:
            root = pop()
            names = os.listdir(root)

            for name in names:
                fullname = os.path.join(root, name)

                # Avoid excess stat calls -- just one will do, thank you!
                stat = os.stat(fullname)
                mode = stat.st_mode
                if S_ISREG(mode):
                    allfiles.append(fsdecode(fullname))
                elif S_ISDIR(mode) and not S_ISLNK(mode):
                    push(fullname) 

def islink(self):
            try: st = self.fs.lstat(self.abspath)
            except os.error: return 0
            return stat.S_ISLNK(st[stat.ST_MODE]) 

def findall(self):
        """Find all files under the base and set ``allfiles`` to the absolute
        pathnames of files found.
        """
        from stat import S_ISREG, S_ISDIR, S_ISLNK

        self.allfiles = allfiles = []
        root = self.base
        stack = [root]
        pop = stack.pop
        push = stack.append

        while stack:
            root = pop()
            names = os.listdir(root)

            for name in names:
                fullname = os.path.join(root, name)

                # Avoid excess stat calls -- just one will do, thank you!
                stat = os.stat(fullname)
                mode = stat.st_mode
                if S_ISREG(mode):
                    allfiles.append(fsdecode(fullname))
                elif S_ISDIR(mode) and not S_ISLNK(mode):
                    push(fullname) 

def findall(self):
        """Find all files under the base and set ``allfiles`` to the absolute
        pathnames of files found.
        """
        from stat import S_ISREG, S_ISDIR, S_ISLNK

        self.allfiles = allfiles = []
        root = self.base
        stack = [root]
        pop = stack.pop
        push = stack.append

        while stack:
            root = pop()
            names = os.listdir(root)

            for name in names:
                fullname = os.path.join(root, name)

                # Avoid excess stat calls -- just one will do, thank you!
                stat = os.stat(fullname)
                mode = stat.st_mode
                if S_ISREG(mode):
                    allfiles.append(fsdecode(fullname))
                elif S_ISDIR(mode) and not S_ISLNK(mode):
                    push(fullname) 

def testStatDirectory_fileModes(self):
    expected_modes = (
      ('some_dir', stat.S_ISDIR),
      ('some_file', stat.S_ISREG),
      ('lnk', stat.S_ISLNK),
      ('a_socket1', stat.S_ISSOCK),
      ('block_dev', stat.S_ISBLK),
      ('random', stat.S_ISCHR),
    )
    entries = self.getStatEntries()
    for filename, check in expected_modes:
      self.assertTrue(check(entries[filename]['st_mode'])) 

def islink(path):
    """Test whether a path is a symbolic link"""
    try:
        st = os.lstat(path)
    except (OSError, AttributeError):
        return False
    return stat.S_ISLNK(st.st_mode)

# Being true for dangling symbolic links is also useful. 

def ismount(path):
    """Test whether a path is a mount point"""
    try:
        s1 = os.lstat(path)
    except OSError:
        # It doesn't exist -- so not a mount point. :-)
        return False
    else:
        # A symlink can never be a mount point
        if stat.S_ISLNK(s1.st_mode):
            return False

    if isinstance(path, bytes):
        parent = join(path, b'..')
    else:
        parent = join(path, '..')
    parent = realpath(parent)
    try:
        s2 = os.lstat(parent)
    except OSError:
        return False

    dev1 = s1.st_dev
    dev2 = s2.st_dev
    if dev1 != dev2:
        return True     # path/.. on a different device as path
    ino1 = s1.st_ino
    ino2 = s2.st_ino
    if ino1 == ino2:
        return True     # path/.. is the same i-node as path
    return False


# Expand paths beginning with '~' or '~user'.
# '~' means $HOME; '~user' means that user's home directory.
# If the path doesn't begin with '~', or if the user or $HOME is unknown,
# the path is returned unchanged (leaving error reporting to whatever
# function is called with the expanded path as argument).
# See also module 'glob' for expansion of *, ? and [...] in pathnames.
# (A function should also be defined to do full *sh-style environment
# variable expansion.) 

def testStatDirectory_fileModes(self):
    expected_modes = (
      ('some_dir', stat.S_ISDIR),
      ('some_file', stat.S_ISREG),
      ('lnk', stat.S_ISLNK),
      ('a_socket1', stat.S_ISSOCK),
      ('block_dev', stat.S_ISBLK),
      ('random', stat.S_ISCHR),
    )
    entries = self.getStatEntries()
    for filename, check in expected_modes:
      self.assertTrue(check(entries[filename]['st_mode'])) 

def testStatDirectory_symbolicLinks(self):
    entries = self.getStatEntries()
    self.assertEqual(entries['lnk']['symbolic_link_to'], '/some/path')
    for d in entries.itervalues():
      self.assertEqual('symbolic_link_to' in d, stat.S_ISLNK(d['st_mode'])) 

def testStatDirectory_fileModes(self):
    expected_modes = (
      ('some_dir', stat.S_ISDIR),
      ('some_file', stat.S_ISREG),
      ('lnk', stat.S_ISLNK),
      ('a_socket1', stat.S_ISSOCK),
      ('block_dev', stat.S_ISBLK),
      ('random', stat.S_ISCHR),
    )
    entries = self.getStatEntries()
    for filename, check in expected_modes:
      self.assertTrue(check(entries[filename]['st_mode'])) 

def findall(self):
        """Find all files under the base and set ``allfiles`` to the absolute
        pathnames of files found.
        """
        from stat import S_ISREG, S_ISDIR, S_ISLNK

        self.allfiles = allfiles = []
        root = self.base
        stack = [root]
        pop = stack.pop
        push = stack.append

        while stack:
            root = pop()
            names = os.listdir(root)

            for name in names:
                fullname = os.path.join(root, name)

                # Avoid excess stat calls -- just one will do, thank you!
                stat = os.stat(fullname)
                mode = stat.st_mode
                if S_ISREG(mode):
                    allfiles.append(fsdecode(fullname))
                elif S_ISDIR(mode) and not S_ISLNK(mode):
                    push(fullname) 

def findall(self):
        """Find all files under the base and set ``allfiles`` to the absolute
        pathnames of files found.
        """
        from stat import S_ISREG, S_ISDIR, S_ISLNK

        self.allfiles = allfiles = []
        root = self.base
        stack = [root]
        pop = stack.pop
        push = stack.append

        while stack:
            root = pop()
            names = os.listdir(root)

            for name in names:
                fullname = os.path.join(root, name)

                # Avoid excess stat calls -- just one will do, thank you!
                stat = os.stat(fullname)
                mode = stat.st_mode
                if S_ISREG(mode):
                    allfiles.append(fsdecode(fullname))
                elif S_ISDIR(mode) and not S_ISLNK(mode):
                    push(fullname) 

def islink(path):
    """Test whether a path is a symbolic link"""
    try:
        st = os.lstat(path)
    except (os.error, AttributeError):
        return False
    return stat.S_ISLNK(st.st_mode)

# Being true for dangling symbolic links is also useful. 

def findall(dir = os.curdir):
    """Find all files under 'dir' and return the list of full filenames
    (relative to 'dir').
    """
    from stat import ST_MODE, S_ISREG, S_ISDIR, S_ISLNK

    list = []
    stack = [dir]
    pop = stack.pop
    push = stack.append

    while stack:
        dir = pop()
        names = os.listdir(dir)

        for name in names:
            if dir != os.curdir:        # avoid the dreaded "./" syndrome
                fullname = os.path.join(dir, name)
            else:
                fullname = name

            # Avoid excess stat calls -- just one will do, thank you!
            stat = os.stat(fullname)
            mode = stat[ST_MODE]
            if S_ISREG(mode):
                list.append(fullname)
            elif S_ISDIR(mode) and not S_ISLNK(mode):
                push(fullname)

    return list 

def findall(self):
        """Find all files under the base and set ``allfiles`` to the absolute
        pathnames of files found.
        """
        from stat import S_ISREG, S_ISDIR, S_ISLNK

        self.allfiles = allfiles = []
        root = self.base
        stack = [root]
        pop = stack.pop
        push = stack.append

        while stack:
            root = pop()
            names = os.listdir(root)

            for name in names:
                fullname = os.path.join(root, name)

                # Avoid excess stat calls -- just one will do, thank you!
                stat = os.stat(fullname)
                mode = stat.st_mode
                if S_ISREG(mode):
                    allfiles.append(fsdecode(fullname))
                elif S_ISDIR(mode) and not S_ISLNK(mode):
                    push(fullname) 

def findall(dir = os.curdir):
    """Find all files under 'dir' and return the list of full filenames
    (relative to 'dir').
    """
    from stat import ST_MODE, S_ISREG, S_ISDIR, S_ISLNK

    list = []
    stack = [dir]
    pop = stack.pop
    push = stack.append

    while stack:
        dir = pop()
        names = os.listdir(dir)

        for name in names:
            if dir != os.curdir:        # avoid the dreaded "./" syndrome
                fullname = os.path.join(dir, name)
            else:
                fullname = name

            # Avoid excess stat calls -- just one will do, thank you!
            stat = os.stat(fullname)
            mode = stat[ST_MODE]
            if S_ISREG(mode):
                list.append(fullname)
            elif S_ISDIR(mode) and not S_ISLNK(mode):
                push(fullname)

    return list 

def islink(path):
    """Test whether a path is a symbolic link"""
    try:
        st = os.lstat(path)
    except (os.error, AttributeError):
        return False
    return stat.S_ISLNK(st.st_mode)

# Being true for dangling symbolic links is also useful. 

def findall(dir = os.curdir):
    """Find all files under 'dir' and return the list of full filenames
    (relative to 'dir').
    """
    from stat import ST_MODE, S_ISREG, S_ISDIR, S_ISLNK

    list = []
    stack = [dir]
    pop = stack.pop
    push = stack.append

    while stack:
        dir = pop()
        names = os.listdir(dir)

        for name in names:
            if dir != os.curdir:        # avoid the dreaded "./" syndrome
                fullname = os.path.join(dir, name)
            else:
                fullname = name

            # Avoid excess stat calls -- just one will do, thank you!
            stat = os.stat(fullname)
            mode = stat[ST_MODE]
            if S_ISREG(mode):
                list.append(fullname)
            elif S_ISDIR(mode) and not S_ISLNK(mode):
                push(fullname)

    return list 

def assert_not_islink(path, msg=None):
    """Assert that path exists but is not a symlink.
    """
    path = _strpath(path)
    st = _stat_for_assert(path, False, msg)
    if stat.S_ISLNK(st.st_mode):
        if msg is None:
            msg = "Path is a symlink: %r" % path
        raise AssertionError(msg) 

def findall(self):
        """Find all files under the base and set ``allfiles`` to the absolute
        pathnames of files found.
        """
        from stat import S_ISREG, S_ISDIR, S_ISLNK

        self.allfiles = allfiles = []
        root = self.base
        stack = [root]
        pop = stack.pop
        push = stack.append

        while stack:
            root = pop()
            names = os.listdir(root)

            for name in names:
                fullname = os.path.join(root, name)

                # Avoid excess stat calls -- just one will do, thank you!
                stat = os.stat(fullname)
                mode = stat.st_mode
                if S_ISREG(mode):
                    allfiles.append(fsdecode(fullname))
                elif S_ISDIR(mode) and not S_ISLNK(mode):
                    push(fullname) 

def findall(self):
        """Find all files under the base and set ``allfiles`` to the absolute
        pathnames of files found.
        """
        from stat import S_ISREG, S_ISDIR, S_ISLNK

        self.allfiles = allfiles = []
        root = self.base
        stack = [root]
        pop = stack.pop
        push = stack.append

        while stack:
            root = pop()
            names = os.listdir(root)

            for name in names:
                fullname = os.path.join(root, name)

                # Avoid excess stat calls -- just one will do, thank you!
                stat = os.stat(fullname)
                mode = stat.st_mode
                if S_ISREG(mode):
                    allfiles.append(fsdecode(fullname))
                elif S_ISDIR(mode) and not S_ISLNK(mode):
                    push(fullname)