# Copyright 2013-2022 Lawrence Livermore National Security, LLC and other
# Spack Project Developers. See the top-level COPYRIGHT file for details.
#
# SPDX-License-Identifier: (Apache-2.0 OR MIT)

import re

from spack.package import *


class Dos2unix(MakefilePackage):
    """DOS/Mac to Unix and vice versa text file format converter."""

    homepage = "https://waterlan.home.xs4all.nl/dos2unix.html"
    url      = "https://waterlan.home.xs4all.nl/dos2unix/dos2unix-7.3.4.tar.gz"

    maintainers = ['cessenat']

    version('7.4.2', sha256='6035c58df6ea2832e868b599dfa0d60ad41ca3ecc8aa27822c4b7a9789d3ae01')
    version('7.3.4', sha256='8ccda7bbc5a2f903dafd95900abb5bf5e77a769b572ef25150fde4056c5f30c5')

    depends_on('gettext')

    executables = [r'^dos2unix$']

    @property
    def build_targets(self):
        targets = [
            'LDFLAGS_USER=-L{0} {1}'.format(
                self.spec['gettext'].prefix.lib, self.spec['gettext'].libs.link_flags),
        ]
        return targets

    def install(self, spec, prefix):
        make('prefix={0}'.format(prefix), 'install')

    @classmethod
    def determine_version(cls, exe):
        output = Executable(exe)('--version', output=str, error=str)
        match = re.search(r'^dos2unix\s+([\d\.]+)', output)
        return match.group(1) if match else None