EAPI="7"

DESCRIPTION=""
HOMEPAGE=""
SRC_URI=""

LICENSE=""
SLOT="0"
KEYWORDS="*"
IUSE="+non-ignorable_internal_collisions"

BDEPEND=""
DEPEND=""
RDEPEND=""

S="${WORKDIR}"

pkg_setup() {
	[[ ! -e ${EROOT}/usr/x1 ]] && mkdir -p "${EROOT}/usr/x1"
	[[ ! -e ${EROOT}/usr/x2 ]] && ln -s x1 "${EROOT}/usr/x2"
	[[ ! -e ${EROOT}/usr/x3 ]] && ln -s x1 "${EROOT}/usr/x3"
	[[ ! -e ${EROOT}/usr/x4 ]] && ln -s x1 "${EROOT}/usr/x4"
}

src_install() {
	dodir /usr/{x1,x2,x3,x4}

	# Regular files with different content
	if use non-ignorable_internal_collisions; then
	echo 1 > "${ED}/usr/x1/a"
	echo 2 > "${ED}/usr/x2/a"
	echo 3 > "${ED}/usr/x3/a"
	echo 4 > "${ED}/usr/x4/a"
	fi

	# Regular files with identical content
	echo 1 > "${ED}/usr/x1/b"
	echo 1 > "${ED}/usr/x2/b"
	echo 1 > "${ED}/usr/x3/b"
	echo 1 > "${ED}/usr/x4/b"

	# Regular files with different metadata and identical content
	if use non-ignorable_internal_collisions; then
	echo 1 > "${ED}/usr/x1/c"
	echo 1 > "${ED}/usr/x2/c"
	echo 1 > "${ED}/usr/x3/c"
	echo 1 > "${ED}/usr/x4/c"
	setfattr -n user.attribute -v value1 "${ED}/usr/x1/c"
	setfattr -n user.attribute -v value2 "${ED}/usr/x2/c"
	fowners adm /usr/x{2,3,4}/c
	fowners :adm /usr/x{3,4}/c
	fperms 444 /usr/x4/c
	fi

	# Symbolic links pointing to different files
	if use non-ignorable_internal_collisions; then
	dosym /dev/zero /usr/x1/d
	dosym /dev/null /usr/x2/d
	dosym /dev/full /usr/x3/d
	dosym /dev/random /usr/x4/d
	fi

	# Symbolic links pointing to identical file
	dosym /dev/zero /usr/x1/e
	dosym /dev/zero /usr/x2/e
	dosym /dev/zero /usr/x3/e
	dosym /dev/zero /usr/x4/e

	# Regular file and relative symbolic links pointing to this regular file
	if use non-ignorable_internal_collisions; then
	echo 1 > "${ED}/usr/x1/f"
	dosym ../x1/f /usr/x2/f
	dosym ../bin/../x1/f /usr/x3/f
	dosym ../bin/../sbin/../x1/f /usr/x4/f
	fi

	# Regular file and absolute symbolic links pointing to this regular file
	if use non-ignorable_internal_collisions; then
	echo 1 > "${ED}/usr/x1/g"
	dosym /usr/x1/g /usr/x2/g
	dosym /usr/bin/../x1/g /usr/x3/g
	dosym /usr/../usr/bin/../x1/g /usr/x4/g
	fi

	# Regular file and absolute symbolic links pointing to something else
	if use non-ignorable_internal_collisions; then
	echo 1 > "${ED}/usr/x1/h"
	dosym /dev/random /usr/x2/h
	dosym /dev/urandom /usr/x3/h
	dosym /dev/tty /usr/x4/h
	fi

	# Regular files with different content and symbolic links pointing to these regular files
	if use non-ignorable_internal_collisions; then
	echo 1 > "${ED}/usr/x1/i"
	echo 2 > "${ED}/usr/x2/i"
	dosym ../x1/i /usr/x3/i
	dosym /usr/x2/i /usr/x4/i
	fi

	# Regular files with different content and symbolic links pointing to something else
	if use non-ignorable_internal_collisions; then
	echo 1 > "${ED}/usr/x1/j"
	echo 2 > "${ED}/usr/x2/j"
	dosym /dev/mem /usr/x3/j
	dosym /dev/port /usr/x4/j
	fi

	# Non-ASCII UTF-8: Regular file and symbolic links pointing to this regular file
	if use non-ignorable_internal_collisions; then
	echo 1 > "${ED}/usr/x1/あいうえお"
	dosym ../x1/あいうえお /usr/x2/あいうえお
	dosym /usr/x1/あいうえお /usr/x3/あいうえお
	dosym /usr/bin/../x1/あいうえお /usr/x4/あいうえお
	fi

	# Non-ASCII UTF-8: Regular files and symbolic links pointing to these regular files
	if use non-ignorable_internal_collisions; then
	echo 1 > "${ED}/usr/x1/アイウエオ"
	echo 2 > "${ED}/usr/x2/アイウエオ"
	dosym ../x1/アイウエオ /usr/x3/アイウエオ
	dosym /usr/bin/../x2/アイウエオ /usr/x4/アイウエオ
	fi

	# Non-UTF-8: Regular file and symbolic links pointing to this regular file
	if use non-ignorable_internal_collisions; then
	echo 1 > "${ED}/usr/x1/"$'\x80'
	dosym ../x1/$'\x80' /usr/x2/$'\x80'
	dosym /usr/x1/$'\x80' /usr/x3/$'\x80'
	dosym /usr/bin/../x1/$'\x80' /usr/x4/$'\x80'
	fi

	ls -Fhl --color=always "${ED}/usr/"{x1,x2,x3,x4}
}