# -*-eselect-*- vim: ft=eselect # Copyright 1999-2020 Gentoo Foundation # Distributed under the terms of the GNU General Public License v2 DESCRIPTION="Manage /usr/bin/vi implementations" MAINTAINER="vim@gentoo.org" VERSION="1.2" # find a list of vi symlink targets, best first find_targets() { local f for f in \ "${EROOT}"/usr/bin/vim \ "${EROOT}"/usr/bin/nvim \ "${EROOT}"/usr/bin/nvi \ "${EROOT}"/usr/bin/elvis \ "${EROOT}"/usr/bin/vile \ "${EROOT}"/usr/bin/gvim \ "${EROOT}"/usr/bin/qvim \ "${EROOT}"/usr/bin/xvile \ "${EROOT}"/usr/bin/pyvim \ "${EROOT}"/bin/busybox \ ; do if [[ -f "${f}" ]] ; then echo $(basename "${f}" ) fi done } # try to remove the vi, ex, view and man vi symlinks remove_symlinks() { rm -f "${EROOT}"/usr/bin/{vi,ex,view} &>/dev/null && \ rm -f "${EROOT}"/usr/share/man/man1/{vi,ex,view}.1{,.gz,.bz2,.lzma} &>/dev/null } # set a man page symlink set_man_symlink() { local target="${1}" link_name="${2}" x extension for x in ".1" ".1.bz2" ".1.gz" ".1.lzma"; do if [[ -e ${EROOT}/usr/share/man/man1/${target}${x} ]]; then extension="${x}" break fi done if [[ -z "${extension}" ]]; then echo "Couldn't find a man page for ${target}; skipping." 1>&2 return 1 fi ln -s "${target}${extension}" \ "${EROOT}/usr/share/man/man1/${link_name}${extension}" } # set the vi, ex, view, and man vi symlinks set_symlinks() { local target="${1}" targets if is_number "${target}" && [[ ${target} -ge 1 ]]; then targets=( $(find_targets ) ) target=${targets[target-1]} fi local dir if [[ ${target} == "busybox" ]]; then dir="${EROOT}/bin" else dir="${EROOT}/usr/bin" fi if [[ -f "${dir}/${target}" ]] ; then remove_symlinks # it's okay if these fail set_man_symlink "${target}" "vi" set_man_symlink "${target}" "ex" set_man_symlink "${target}" "view" # it's not okay if these fail target=$(relative_name "${dir}/${target}" "${EROOT}/usr/bin") ln -s "${target}" "${EROOT}/usr/bin/vi" \ || die "Couldn't set ${target} /usr/bin/vi symlink" ln -s "${target}" "${EROOT}/usr/bin/ex" \ || die "Couldn't set ${target} /usr/bin/ex symlink" ln -s "${target}" "${EROOT}/usr/bin/view" \ || die "Couldn't set ${target} /usr/bin/view symlink" else die -q "Target \"${1}\" doesn't appear to be valid!" fi } ### show action ### describe_show() { echo "Show the current vi implementation" } do_show() { [[ -z "${@}" ]] || die -q "Too many parameters" write_list_start "Current vi implementation:" if [[ -L "${EROOT}/usr/bin/vi" ]] ; then write_kv_list_entry "$(basename $(canonicalise ${EROOT}/usr/bin/vi ) )" "" elif [[ -e "${EROOT}/usr/bin/vi" ]] ; then write_kv_list_entry "(not a symlink)" "" else write_kv_list_entry "(unset)" "" fi } ### list action ### describe_list() { echo "List available vi implementations" } do_list() { [[ -z "${@}" ]] || die -q "Too many parameters" local i targets targets=( $(find_targets ) ) for (( i = 0; i < ${#targets[@]}; i++ )); do [[ ${targets[i]} = \ $(basename "$(canonicalise "${EROOT}/usr/bin/vi")") ]] \ && targets[i]=$(highlight_marker "${targets[i]}") done write_list_start "Available vi implementations:" write_numbered_list -m "(none found)" "${targets[@]}" } ### set action ### describe_set() { echo "Set a new vi implementation provider" } describe_set_options() { echo "target : Target name or number (from 'list' action)" } describe_set_parameters() { echo "" } do_set() { if [[ -z "${1}" ]] ; then die -q "You didn't give me a provider name" elif [[ -n "${2}" ]] ; then die -q "Too many parameters" elif [[ -L "${EROOT}/usr/bin/vi" ]] ; then if ! remove_symlinks ; then die -q "Can't remove existing provider" elif ! set_symlinks "${1}" ; then die -q "Can't set new provider" fi elif [[ -e "${EROOT}/usr/bin/vi" ]] ; then die -q "Sorry, ${EROOT}/usr/bin/vi confuses me" else set_symlinks "${1}" || die -q "Can't set a new provider" fi } ### update action ### describe_update() { echo "Automatically update the vi provider" } describe_update_options() { echo "--if-unset : Do not override existing implementation" } do_update() { [[ -z "${1}" ]] || ( [[ -z "${2}" ]] && [[ "${1}" == "--if-unset" ]] ) || \ die -q "Usage error" if [[ -L "${EROOT}/usr/bin/vi" ]]; then [[ ${1} == "--if-unset" ]] && return remove_symlinks || die -q "Can't remove existing link" fi if [[ -e "${EROOT}/usr/bin/vi" ]]; then die -q "Can't set a new provider" elif ! [[ -z $(find_targets ) ]]; then set_symlinks 1 || die -q "Can't set a new provider" fi }