# Copyright (C) 2022 Greenbone Networks GmbH
#
# SPDX-License-Identifier: GPL-3.0-or-later
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

from typing import Iterator

from troubadix.plugin import LinterResult, LinterError, FilePlugin


class CheckTabs(FilePlugin):
    name = "check_tabs"

    def run(self) -> Iterator[LinterResult]:
        """This script checks if a VT is using one or
        more tabs instead of spaces."""
        count = 1
        for line in self.context.lines:
            if "\t" in line:
                yield LinterError(f"Found tabs in line {count}.")
            count += 1
