mercurial/dirstate.py

33439:0e114b992e02

        if tr:
            return self._pendingfilename
        else:
            return self._filename

    def savebackup(self, tr, suffix='', prefix=''):
        '''Save current dirstate into backup file with suffix'''
        assert len(suffix) > 0 or len(prefix) > 0
        filename = self._actualfilename(tr)

        # use '_writedirstate' instead of 'write' to write changes certainly,
        # because the latter omits writing out if transaction is running.
        # output file will be used to create backup of dirstate at this point.
        if self._dirty or not self._opener.exists(filename):

            # ensure that pending file written above is unlinked at
            # failure, even if tr.writepending isn't invoked until the
            # end of this transaction
            tr.registertmp(filename, location='plain')

        backupname = prefix + self._filename + suffix
        assert backupname != filename
        self._opener.tryunlink(backupname)
        # hardlink backup is okay because _writedirstate is always called
        # with an "atomictemp=True" file.
        util.copyfile(self._opener.join(filename),
                      self._opener.join(backupname), hardlink=True)

    def restorebackup(self, tr, suffix='', prefix=''):
        '''Restore dirstate by backup file with suffix'''
        assert len(suffix) > 0 or len(prefix) > 0
        # this "invalidate()" prevents "wlock.release()" from writing
        # changes of dirstate out after restoring from backup file
        self.invalidate()
        filename = self._actualfilename(tr)
        # using self._filename to avoid having "pending" in the backup filename
        self._opener.rename(prefix + self._filename + suffix, filename,
                            checkambig=True)

    def clearbackup(self, tr, suffix='', prefix=''):
        '''Clear backup file with suffix'''
        assert len(suffix) > 0 or len(prefix) > 0
        # using self._filename to avoid having "pending" in the backup filename
        self._opener.unlink(prefix + self._filename + suffix)

33440:ec306bc6915b

        if tr:
            return self._pendingfilename
        else:
            return self._filename

    def savebackup(self, tr, backupname):
        '''Save current dirstate into backup file'''
        filename = self._actualfilename(tr)
        assert backupname != filename

        # use '_writedirstate' instead of 'write' to write changes certainly,
        # because the latter omits writing out if transaction is running.
        # output file will be used to create backup of dirstate at this point.
        if self._dirty or not self._opener.exists(filename):

            # ensure that pending file written above is unlinked at
            # failure, even if tr.writepending isn't invoked until the
            # end of this transaction
            tr.registertmp(filename, location='plain')

        self._opener.tryunlink(backupname)
        # hardlink backup is okay because _writedirstate is always called
        # with an "atomictemp=True" file.
        util.copyfile(self._opener.join(filename),
                      self._opener.join(backupname), hardlink=True)

    def restorebackup(self, tr, backupname):
        '''Restore dirstate by backup file'''
        # this "invalidate()" prevents "wlock.release()" from writing
        # changes of dirstate out after restoring from backup file
        self.invalidate()
        filename = self._actualfilename(tr)
        self._opener.rename(backupname, filename, checkambig=True)

    def clearbackup(self, tr, backupname):
        '''Clear backup file'''
        self._opener.unlink(backupname)