remove redundant constants from stat module

the constants are only there in case the C implementation (ie the _stat
module) is not available. With Cosmopolitan the _stat module is always
available.

The entire Lib/stat.py file can be removed if the Windows-based
constants can be moved into the Modules/_stat.c.

third_party/python/Lib/logging/handlers.py

@@ -24,7 +24,7 @@ To use, simply 'import logging.handlers' and log away!
 """
 
 import logging, socket, os, pickle, struct, time, re
-from stat import ST_DEV, ST_INO, ST_MTIME
+from _stat import ST_DEV, ST_INO, ST_MTIME
 import queue
 try:
     import threading

third_party/python/Lib/pathlib.py

@@ -11,7 +11,7 @@ from collections.abc import Sequence
 from contextlib import contextmanager
 from errno import EINVAL, ENOENT, ENOTDIR
 from operator import attrgetter
-from stat import S_ISDIR, S_ISLNK, S_ISREG, S_ISSOCK, S_ISBLK, S_ISCHR, S_ISFIFO
+from _stat import S_ISDIR, S_ISLNK, S_ISREG, S_ISSOCK, S_ISBLK, S_ISCHR, S_ISFIFO
 from urllib.parse import quote_from_bytes as urlquote_from_bytes
 from posix import _getfinalpathname
 

third_party/python/Lib/stat.py

@@ -3,151 +3,7 @@
 Suggested usage: from stat import *
 """
 
-# Indices for stat struct members in the tuple returned by os.stat()
+from _stat import *
-
-ST_MODE  = 0
-ST_INO   = 1
-ST_DEV   = 2
-ST_NLINK = 3
-ST_UID   = 4
-ST_GID   = 5
-ST_SIZE  = 6
-ST_ATIME = 7
-ST_MTIME = 8
-ST_CTIME = 9
-
-# Extract bits from the mode
-
-def S_IMODE(mode):
-    """Return the portion of the file's mode that can be set by
-    os.chmod().
-    """
-    return mode & 0o7777
-
-def S_IFMT(mode):
-    """Return the portion of the file's mode that describes the
-    file type.
-    """
-    return mode & 0o170000
-
-# Constants used as S_IFMT() for various file types
-# (not all are implemented on all systems)
-
-S_IFDIR  = 0o040000  # directory
-S_IFCHR  = 0o020000  # character device
-S_IFBLK  = 0o060000  # block device
-S_IFREG  = 0o100000  # regular file
-S_IFIFO  = 0o010000  # fifo (named pipe)
-S_IFLNK  = 0o120000  # symbolic link
-S_IFSOCK = 0o140000  # socket file
-
-# Functions to test for each file type
-
-def S_ISDIR(mode):
-    """Return True if mode is from a directory."""
-    return S_IFMT(mode) == S_IFDIR
-
-def S_ISCHR(mode):
-    """Return True if mode is from a character special device file."""
-    return S_IFMT(mode) == S_IFCHR
-
-def S_ISBLK(mode):
-    """Return True if mode is from a block special device file."""
-    return S_IFMT(mode) == S_IFBLK
-
-def S_ISREG(mode):
-    """Return True if mode is from a regular file."""
-    return S_IFMT(mode) == S_IFREG
-
-def S_ISFIFO(mode):
-    """Return True if mode is from a FIFO (named pipe)."""
-    return S_IFMT(mode) == S_IFIFO
-
-def S_ISLNK(mode):
-    """Return True if mode is from a symbolic link."""
-    return S_IFMT(mode) == S_IFLNK
-
-def S_ISSOCK(mode):
-    """Return True if mode is from a socket."""
-    return S_IFMT(mode) == S_IFSOCK
-
-# Names for permission bits
-
-S_ISUID = 0o4000  # set UID bit
-S_ISGID = 0o2000  # set GID bit
-S_ENFMT = S_ISGID # file locking enforcement
-S_ISVTX = 0o1000  # sticky bit
-S_IREAD = 0o0400  # Unix V7 synonym for S_IRUSR
-S_IWRITE = 0o0200 # Unix V7 synonym for S_IWUSR
-S_IEXEC = 0o0100  # Unix V7 synonym for S_IXUSR
-S_IRWXU = 0o0700  # mask for owner permissions
-S_IRUSR = 0o0400  # read by owner
-S_IWUSR = 0o0200  # write by owner
-S_IXUSR = 0o0100  # execute by owner
-S_IRWXG = 0o0070  # mask for group permissions
-S_IRGRP = 0o0040  # read by group
-S_IWGRP = 0o0020  # write by group
-S_IXGRP = 0o0010  # execute by group
-S_IRWXO = 0o0007  # mask for others (not in group) permissions
-S_IROTH = 0o0004  # read by others
-S_IWOTH = 0o0002  # write by others
-S_IXOTH = 0o0001  # execute by others
-
-# Names for file flags
-
-UF_NODUMP    = 0x00000001  # do not dump file
-UF_IMMUTABLE = 0x00000002  # file may not be changed
-UF_APPEND    = 0x00000004  # file may only be appended to
-UF_OPAQUE    = 0x00000008  # directory is opaque when viewed through a union stack
-UF_NOUNLINK  = 0x00000010  # file may not be renamed or deleted
-UF_COMPRESSED = 0x00000020 # OS X: file is hfs-compressed
-UF_HIDDEN    = 0x00008000  # OS X: file should not be displayed
-SF_ARCHIVED  = 0x00010000  # file may be archived
-SF_IMMUTABLE = 0x00020000  # file may not be changed
-SF_APPEND    = 0x00040000  # file may only be appended to
-SF_NOUNLINK  = 0x00100000  # file may not be renamed or deleted
-SF_SNAPSHOT  = 0x00200000  # file is a snapshot file
-
-
-_filemode_table = (
-    ((S_IFLNK,         "l"),
-     (S_IFREG,         "-"),
-     (S_IFBLK,         "b"),
-     (S_IFDIR,         "d"),
-     (S_IFCHR,         "c"),
-     (S_IFIFO,         "p")),
-
-    ((S_IRUSR,         "r"),),
-    ((S_IWUSR,         "w"),),
-    ((S_IXUSR|S_ISUID, "s"),
-     (S_ISUID,         "S"),
-     (S_IXUSR,         "x")),
-
-    ((S_IRGRP,         "r"),),
-    ((S_IWGRP,         "w"),),
-    ((S_IXGRP|S_ISGID, "s"),
-     (S_ISGID,         "S"),
-     (S_IXGRP,         "x")),
-
-    ((S_IROTH,         "r"),),
-    ((S_IWOTH,         "w"),),
-    ((S_IXOTH|S_ISVTX, "t"),
-     (S_ISVTX,         "T"),
-     (S_IXOTH,         "x"))
-)
-
-def filemode(mode):
-    """Convert a file's mode to a string of the form '-rwxrwxrwx'."""
-    perm = []
-    for table in _filemode_table:
-        for bit, char in table:
-            if mode & bit == bit:
-                perm.append(char)
-                break
-        else:
-            perm.append("-")
-    return "".join(perm)
-
 
 # Windows FILE_ATTRIBUTE constants for interpreting os.stat()'s
 # "st_file_attributes" member
@@ -170,12 +26,5 @@ FILE_ATTRIBUTE_SYSTEM = 4
 FILE_ATTRIBUTE_TEMPORARY = 256
 FILE_ATTRIBUTE_VIRTUAL = 65536
 
-
-# If available, use C implementation
-try:
-    from _stat import *
-except ImportError:
-    pass
-
 if __name__ == 'PYOBJ.COM':
   import _stat

third_party/python/Lib/test/test_stat.py

@@ -4,10 +4,8 @@ import sys
 from test.support import TESTFN, import_fresh_module
 
 c_stat = import_fresh_module('stat', fresh=['_stat'])
-py_stat = import_fresh_module('stat', blocked=['_stat'])
 
 assert c_stat
-assert py_stat
 
 class TestFilemode:
     statmod = None
@@ -228,11 +226,6 @@ class TestFilemodeCStat(TestFilemode, unittest.TestCase):
     format_funcs = TestFilemode.format_funcs | {'S_ISDOOR', 'S_ISPORT',
                                                 'S_ISWHT'}
 
-
-class TestFilemodePyStat(TestFilemode, unittest.TestCase):
-    statmod = py_stat
-
-
 if __name__ == '__main__':
     unittest.main()