1 files changed, 152 insertions, 0 deletions
diff --git a/app-eselect/eselect-unison/files/unison.eselect-0.1 b/app-eselect/eselect-unison/files/unison.eselect-0.1
new file mode 100644
index 000000000000..6baa01264da4
--- /dev/null
+++ b/app-eselect/eselect-unison/files/unison.eselect-0.1
@@ -0,0 +1,152 @@
+# Copyright 1999-2015 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Id$
+
+DESCRIPTION="Manage /usr/bin/unison versions"
+MAINTAINER="ml@gentoo.org"
+SVN_DATE='$Date: 2015/03/31 16:57:32 $'
+VERSION=$(svn_date_to_version "${SVN_DATE}" )
+
+# find a list of unison symlink targets, best first
+find_targets() {
+	local f
+	for f in "${ROOT}"/usr/bin/unison-[0-9]*; do
+		if [[ -f ${f} ]] ; then
+			echo "${f##*/unison-}"
+		fi
+	done | tac
+}
+
+# find version number of currently symlinked version
+identify_target() {
+	local f
+	f="$(canonicalise "${ROOT}"/usr/bin/unison)"
+	echo "${f##*/unison-}"
+}
+
+# try to remove the unison symlink
+remove_symlinks() {
+	rm -f "${ROOT}"/usr/bin/unison &>/dev/null
+}
+
+# set the unison symlink
+set_symlinks() {
+	local target="${1}" targets
+	if is_number "${target}" && [[ ${target} -ge 1 ]] ; then
+		targets=( $(find_targets ) )
+		target=${targets[$(( ${target} - 1 ))]}
+	fi
+	if [[ -f "${ROOT}/usr/bin/unison-${target}" ]] ; then
+		remove_symlinks
+		ln -s "unison-${target}" "${ROOT}/usr/bin/unison" || \
+			die "Could not set ${target} /usr/bin/unison symlink"
+	else
+		die -q "Target \"${target}\" doesn't appear to be valid!"
+	fi
+}
+
+### show action ###
+
+describe_show() {
+	echo "Show the current unison version"
+}
+
+do_show() {
+	[[ -z "${@}" ]] || die -q "Too many parameters"
+
+	write_list_start "Current unison verson:"
+	if [[ -L "${ROOT}/usr/bin/unison" ]] ; then
+		write_kv_list_entry "$(identify_target)" ""
+	elif [[ -e "${ROOT}/usr/bin/unison" ]] ; then
+		write_kv_list_entry "(not a symlink)" ""
+	else
+		write_kv_list_entry "(unset)" ""
+	fi
+}
+
+### list action ###
+
+describe_list() {
+	echo "List available unison versions"
+}
+
+do_list() {
+	[[ -z "${@}" ]] || die -q "Too many parameters"
+
+	local i targets current
+	targets=( $(find_targets ) )
+	current=$(identify_target)
+	if [[ -n ${targets[@]} ]] ; then
+		for (( i = 0 ; i < ${#targets[@]} ; i = i + 1 )) ; do
+			[[ ${targets[${i}]} == ${current} ]] && \
+				targets[${i}]="${targets[${i}]} $(highlight '*' )"
+		done
+		write_list_start "Available unison versions:"
+		write_numbered_list "${targets[@]}"
+	else
+		write_kv_list_entry "(none found)" ""
+	fi
+}
+
+### set action ###
+
+describe_set() {
+	echo "Set a new unison version"
+}
+
+describe_set_options() {
+	echo "target : Target version number or index from 'list' action"
+}
+
+describe_set_parameters() {
+	echo "<target>"
+}
+
+do_set() {
+	if [[ -z "${1}" ]] ; then
+		die -q "You didn't give me a version number"
+
+	elif [[ -n "${2}" ]] ; then
+		die -q "Too many parameters"
+
+	elif [[ -L "${ROOT}/usr/bin/unison" ]] ; then
+		if ! remove_symlinks ; then
+			die -q "Can't remove existing version symlink"
+		elif ! set_symlinks "${1}" ; then
+			die -q "Can't set new version"
+		fi
+
+	elif [[ -e "${ROOT}/usr/bin/unison" ]] ; then
+		die -q "${ROOT}/usr/bin/unison seems to be from an old ebuild, please remove manually"
+
+	else
+		set_symlinks "${1}" || die -q "Can't set new version"
+	fi
+}
+
+### update action ###
+
+describe_update() {
+	echo "Automatically update the unison version number"
+}
+
+describe_update_options() {
+	echo "--if-unset : Do not override currently selected version"
+}
+
+do_update() {
+	[[ -z "${1}" ]] || ( [[ -z "${2}" ]] && [[ "${1}" == "--if-unset" ]] ) || \
+		die -q "Usage error"
+
+	if [[ -L "${ROOT}/usr/bin/unison" ]] ; then
+		[[ ${1} == "--if-unset" ]] && return
+		remove_symlinks || die -q "Can't remove existing symlink"
+	fi
+	if [[ -e "${ROOT}/usr/bin/unison" ]] ; then
+		die -q "${ROOT}/usr/bin/unison seems to be from an old ebuild, please remove manually"
+	elif ! [[ -z $(find_targets ) ]] ; then
+		set_symlinks 1 || die -q "Can't set a new version"
+	fi
+}
+
+# vim: set ft=eselect :