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# Copyright 1999-2019 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

EAPI=7

BASHCOMP_P=bashcomp-2.0.3
PYTHON_COMPAT=( python3_{5,6,7} )
inherit bash-completion-r1 python-any-r1

DESCRIPTION="Programmable Completion for bash"
HOMEPAGE="https://github.com/scop/bash-completion"
SRC_URI="
	https://github.com/scop/bash-completion/releases/download/${PV}/${P}.tar.xz
	eselect? ( https://github.com/mgorny/bashcomp2/releases/download/v${BASHCOMP_P#*-}/${BASHCOMP_P}.tar.gz )"

LICENSE="GPL-2+"
SLOT="0"
KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~mips ~ppc ~ppc64 ~s390 ~sh ~sparc ~x86 ~amd64-linux ~x86-linux ~ppc-macos ~x64-macos ~x86-macos ~m68k-mint ~sparc-solaris ~sparc64-solaris"
IUSE="+eselect test"
RESTRICT="test"

# completion collision with net-fs/mc
RDEPEND=">=app-shells/bash-4.3_p30-r1:0
	sys-apps/miscfiles
	!!net-fs/mc"
DEPEND="
	test? (
		${RDEPEND}
		app-misc/dtach
		dev-util/dejagnu
		dev-tcltk/tcllib
		$(python_gen_any_dep '
			dev-python/pexpect[${PYTHON_USEDEP}]
			dev-python/pytest[${PYTHON_USEDEP}]
		')
	)"
PDEPEND=">=app-shells/gentoo-bashcomp-20140911"

strip_completions() {
	# Remove unwanted completions.
	local strip_completions=(
		# Slackware package stuff, quite generic names cause collisions
		# (e.g. with sys-apps/pacman)
		explodepkg installpkg makepkg pkgtool removepkg upgradepkg

		# Debian/Red Hat network stuff
		ifdown ifup ifquery ifstatus

		# Installed in app-editors/vim-core
		xxd

		# Now-dead symlinks to deprecated completions
		hd ncal
	)
	if [[ ${ARCH} != *-fbsd && ${ARCH} != *-freebsd ]]; then
		strip_completions+=(
			freebsd-update kldload kldunload portinstall portsnap
			pkg_deinstall pkg_delete pkg_info
		)
	fi

	local file
	for file in "${strip_completions[@]}"; do
		rm "${ED}"/usr/share/bash-completion/completions/${file} ||
			die "stripping ${file} failed"
	done

	# remove deprecated completions (moved to other packages)
	rm "${ED}"/usr/share/bash-completion/completions/_* || die
}

python_check_deps() {
	has_version "dev-python/pexpect[${PYTHON_USEDEP}]" &&
	has_version "dev-python/pytest[${PYTHON_USEDEP}]"
}

pkg_setup() {
	use test && python-any-r1_pkg_setup
}

src_prepare() {
	use eselect &&
		eapply "${WORKDIR}/${BASHCOMP_P}/bash-completion-blacklist-support.patch"
	# Bug 543100, update bug 601194
	eapply "${FILESDIR}/${PN}-2.1-escape-characters-r1.patch"
	eapply_user
}

src_test() {
	# Tests need an interactive shell, #477066
	# idea stolen from:
	# http://pkgs.fedoraproject.org/cgit/rpms/bash-completion.git/tree/bash-completion.spec

	# real-time output of the log ;-)
	touch "${T}/dtach-test.log" || die
	tail -f "${T}/dtach-test.log" &
	local tail_pid=${!}

	# override the default expect timeout and buffer size to avoid tests
	# failing randomly due to cold cache, busy system or just more output
	# than upstream anticipated (they run tests on pristine docker
	# installs of binary distros)
	nonfatal dtach -N "${T}/dtach.sock" \
		bash -c 'emake check RUNTESTFLAGS="OPT_TIMEOUT=300 OPT_BUFFER_SIZE=1000000" PYTESTFLAGS="-vv" \
			&> "${T}"/dtach-test.log; echo ${?} > "${T}"/dtach-test.out'

	kill "${tail_pid}"
	[[ -f ${T}/dtach-test.out ]] || die "Unable to run tests"
	[[ $(<"${T}"/dtach-test.out) == 0 ]] || die "Tests failed"
}

src_install() {
	# work-around race conditions, bug #526996
	mkdir -p "${ED}"/usr/share/bash-completion/{completions,helpers} || die

	emake DESTDIR="${D}" profiledir="${EPREFIX}"/etc/bash/bashrc.d install

	strip_completions

	dodoc AUTHORS CHANGES CONTRIBUTING.md README.md

	# install the eselect module
	if use eselect; then
		insinto /usr/share/eselect/modules
		doins "${WORKDIR}/${BASHCOMP_P}/bashcomp.eselect"
		doman "${WORKDIR}/${BASHCOMP_P}/bashcomp.eselect.5"
	fi
}

pkg_postinst() {
	local v
	for v in ${REPLACING_VERSIONS}; do
		if ver_test "${v}" -lt 2.1-r90; then
			ewarn "For bash-completion autoloader to work, all completions need to"
			ewarn "be installed in /usr/share/bash-completion/completions. You may"
			ewarn "need to rebuild packages that installed completions in the old"
			ewarn "location. You can do this using:"
			ewarn
			ewarn "$ find ${EPREFIX}/usr/share/bash-completion -maxdepth 1 -type f '!' -name 'bash_completion' -exec emerge -1v {} +"
			ewarn
			ewarn "After the rebuild, you should remove the old setup symlinks:"
			ewarn
			ewarn "$ find ${EPREFIX}/etc/bash_completion.d -type l -delete"
		fi
	done

	if has_version 'app-shells/zsh'; then
		elog
		elog "If you are interested in using the provided bash completion functions with"
		elog "zsh, valuable tips on the effective use of bashcompinit are available:"
		elog "  http://www.zsh.org/mla/workers/2003/msg00046.html"
		elog
	fi
}