comparison mercurial/win32.py @ 39762:edaa40dc5fe5

py3: create built in exceptions with str type messages in win32.py

I hit an IOError in unlink() in test-pathconflicts-basic.t, that then crashed as
it was handled:

    File "mercurial\dispatch.py", line 359, in _runcatch
      return _callcatch(ui, _runcatchfunc)
    File "mercurial\dispatch.py", line 367, in _callcatch
      return scmutil.callcatch(ui, func)
    File "mercurial\scmutil.py", line 252, in callcatch
      ui.error(_("abort: %s\n") % encoding.strtolocal(inst.strerror))
    File "mercurial\encoding.py", line 205, in unitolocal
      return tolocal(u.encode('utf-8'))
  AttributeError: 'bytes' object has no attribute 'encode'

39761:4675c122157e

    # See https://bugs.python.org/issue28474
    code = _kernel32.GetLastError()
    if code > 0x7fffffff:
        code -= 2**32
    err = ctypes.WinError(code=code)
    raise OSError(err.errno, '%s: %s' % (name,
                                         encoding.strtolocal(err.strerror)))

def _getfileinfo(name):
    fh = _kernel32.CreateFileA(name, 0,
            _FILE_SHARE_READ | _FILE_SHARE_WRITE | _FILE_SHARE_DELETE,
            None, _OPEN_EXISTING, _FILE_FLAG_BACKUP_SEMANTICS, None)

    if os.path.isdir(f):
        # use EPERM because it is POSIX prescribed value, even though
        # unlink(2) on directories returns EISDIR on Linux
        raise IOError(errno.EPERM,
                      "Unlinking directory not permitted: '%s'" % f)

    # POSIX allows to unlink and rename open files. Windows has serious
    # problems with doing that:
    # - Calling os.unlink (or os.rename) on a file f fails if f or any
    #   hardlinked copy of f has been opened with Python's open(). There is no

            break
        except OSError as e:
            if e.errno != errno.EEXIST:
                raise
    else:
        raise IOError(errno.EEXIST, "No usable temporary filename found")

    try:
        os.unlink(temp)
    except OSError:
        # The unlink might have failed because the READONLY attribute may heave

39762:edaa40dc5fe5

    # See https://bugs.python.org/issue28474
    code = _kernel32.GetLastError()
    if code > 0x7fffffff:
        code -= 2**32
    err = ctypes.WinError(code=code)
    raise OSError(err.errno, r'%s: %s' % (encoding.strfromlocal(name),
                                          err.strerror))

def _getfileinfo(name):
    fh = _kernel32.CreateFileA(name, 0,
            _FILE_SHARE_READ | _FILE_SHARE_WRITE | _FILE_SHARE_DELETE,
            None, _OPEN_EXISTING, _FILE_FLAG_BACKUP_SEMANTICS, None)

    if os.path.isdir(f):
        # use EPERM because it is POSIX prescribed value, even though
        # unlink(2) on directories returns EISDIR on Linux
        raise IOError(errno.EPERM,
                      r"Unlinking directory not permitted: '%s'"
                      % encoding.strfromlocal(f))

    # POSIX allows to unlink and rename open files. Windows has serious
    # problems with doing that:
    # - Calling os.unlink (or os.rename) on a file f fails if f or any
    #   hardlinked copy of f has been opened with Python's open(). There is no

            break
        except OSError as e:
            if e.errno != errno.EEXIST:
                raise
    else:
        raise IOError(errno.EEXIST, r"No usable temporary filename found")

    try:
        os.unlink(temp)
    except OSError:
        # The unlink might have failed because the READONLY attribute may heave