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comparison mercurial/win32.py @ 51716:e618a1756b08

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typing: avoid some useless @overload definitions in `mercurial.util` Apparently pytype considered the name as well as the type of each argument, and generates @overload definitions if they don't match. At best this is clutter, and can easily be removed.
author Matt Harbison <matt_harbison@yahoo.com>
date Fri, 19 Jul 2024 16:38:53 -0400
parents ca7bde5dbafb
children f4733654f144
comparison
equal deleted inserted replaced
51715:7558cee89655 51716:e618a1756b08
458 def nlinks(name: bytes) -> int: 458 def nlinks(name: bytes) -> int:
459 '''return number of hardlinks for the given file''' 459 '''return number of hardlinks for the given file'''
460 return _getfileinfo(name).nNumberOfLinks 460 return _getfileinfo(name).nNumberOfLinks
461 461
462 462
463 def samefile(path1: bytes, path2: bytes) -> bool: 463 def samefile(fpath1: bytes, fpath2: bytes) -> bool:
464 '''Returns whether path1 and path2 refer to the same file or directory.''' 464 '''Returns whether fpath1 and fpath2 refer to the same file or directory.'''
465 res1 = _getfileinfo(path1) 465 res1 = _getfileinfo(fpath1)
466 res2 = _getfileinfo(path2) 466 res2 = _getfileinfo(fpath2)
467 return ( 467 return (
468 res1.dwVolumeSerialNumber == res2.dwVolumeSerialNumber 468 res1.dwVolumeSerialNumber == res2.dwVolumeSerialNumber
469 and res1.nFileIndexHigh == res2.nFileIndexHigh 469 and res1.nFileIndexHigh == res2.nFileIndexHigh
470 and res1.nFileIndexLow == res2.nFileIndexLow 470 and res1.nFileIndexLow == res2.nFileIndexLow
471 ) 471 )
472 472
473 473
474 def samedevice(path1: bytes, path2: bytes) -> bool: 474 def samedevice(fpath1: bytes, fpath2: bytes) -> bool:
475 '''Returns whether path1 and path2 are on the same device.''' 475 '''Returns whether fpath1 and fpath2 are on the same device.'''
476 res1 = _getfileinfo(path1) 476 res1 = _getfileinfo(fpath1)
477 res2 = _getfileinfo(path2) 477 res2 = _getfileinfo(fpath2)
478 return res1.dwVolumeSerialNumber == res2.dwVolumeSerialNumber 478 return res1.dwVolumeSerialNumber == res2.dwVolumeSerialNumber
479 479
480 480
481 def peekpipe(pipe) -> int: 481 def peekpipe(pipe) -> int:
482 handle = msvcrt.get_osfhandle(pipe.fileno()) # pytype: disable=module-attr 482 handle = msvcrt.get_osfhandle(pipe.fileno()) # pytype: disable=module-attr
709 _kernel32.CloseHandle(pi.hThread) 709 _kernel32.CloseHandle(pi.hThread)
710 710
711 return pi.dwProcessId 711 return pi.dwProcessId
712 712
713 713
714 def unlink(f: bytes) -> None: 714 def unlink(path: bytes) -> None:
715 '''try to implement POSIX' unlink semantics on Windows''' 715 '''try to implement POSIX' unlink semantics on Windows'''
716 716
717 if os.path.isdir(f): 717 if os.path.isdir(path):
718 # use EPERM because it is POSIX prescribed value, even though 718 # use EPERM because it is POSIX prescribed value, even though
719 # unlink(2) on directories returns EISDIR on Linux 719 # unlink(2) on directories returns EISDIR on Linux
720 raise IOError( 720 raise IOError(
721 errno.EPERM, 721 errno.EPERM,
722 r"Unlinking directory not permitted: '%s'" 722 r"Unlinking directory not permitted: '%s'"
723 % encoding.strfromlocal(f), 723 % encoding.strfromlocal(path),
724 ) 724 )
725 725
726 # POSIX allows to unlink and rename open files. Windows has serious 726 # POSIX allows to unlink and rename open files. Windows has serious
727 # problems with doing that: 727 # problems with doing that:
728 # - Calling os.unlink (or os.rename) on a file f fails if f or any 728 # - Calling os.unlink (or os.rename) on a file f fails if f or any
739 # f to a random temporary name before calling os.unlink on it. This allows 739 # f to a random temporary name before calling os.unlink on it. This allows
740 # callers to recreate f immediately while having other readers do their 740 # callers to recreate f immediately while having other readers do their
741 # implicit zombie filename blocking on a temporary name. 741 # implicit zombie filename blocking on a temporary name.
742 742
743 for tries in range(10): 743 for tries in range(10):
744 temp = b'%s-%08x' % (f, random.randint(0, 0xFFFFFFFF)) 744 temp = b'%s-%08x' % (path, random.randint(0, 0xFFFFFFFF))
745 try: 745 try:
746 os.rename(f, temp) 746 os.rename(path, temp)
747 break 747 break
748 except FileExistsError: 748 except FileExistsError:
749 pass 749 pass
750 else: 750 else:
751 raise IOError(errno.EEXIST, "No usable temporary filename found") 751 raise IOError(errno.EEXIST, "No usable temporary filename found")