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Lines 4-10
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DESCRIPTION="Manage /bin/sh (POSIX shell) implementations" |
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DESCRIPTION="Manage /bin/sh (POSIX shell) implementations" |
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MAINTAINER="gentoo@mgorny.alt.pl" |
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MAINTAINER="gentoo@mgorny.alt.pl" |
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VERSION="0.1" |
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VERSION="0.2_rc" |
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# Based on work of Erik Hahn; bug #214817 |
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# Based on work of Erik Hahn; bug #214817 |
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Lines 19-25
find_targets() {
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zsh \ |
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zsh \ |
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posh \ |
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posh \ |
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; do |
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; do |
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if [[ -x "${ROOT}"/bin/${t} ]]; then |
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if [[ -x ${ROOT}/bin/${t} ]]; then |
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echo ${t} |
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echo ${t} |
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fi |
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fi |
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done |
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done |
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Lines 29-43
find_targets() {
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set_symlinks() { |
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set_symlinks() { |
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local target="${1}" targets |
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local target="${1}" targets |
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[[ ! -L "${ROOT}"/bin/sh && -e "${ROOT}"/bin/sh ]] && \ |
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[[ ! -L ${ROOT}/bin/sh && -e ${ROOT}/bin/sh ]] && \ |
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die -q "/bin/sh is not a symlink!" |
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die -q "/bin/sh is not a symlink!" |
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if is_number "${target}" && [[ ${target} -ge 1 ]]; then |
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if is_number "${target}" && [[ ${target} -ge 1 ]]; then |
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targets=( $(find_targets) ) |
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targets=( $(find_targets) ) |
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target=${targets[$(( ${target} - 1 ))]} |
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target=${targets[target-1]} |
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fi |
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fi |
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if [[ -x "${ROOT}"/bin/${target} ]]; then |
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if [[ -x ${ROOT}/bin/${target} ]]; then |
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local tmpf="${ROOT}"/bin/sh.new |
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local tmpf="${ROOT}"/bin/sh.new |
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# we could use 'ln -f' to directly replace the symlink |
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# we could use 'ln -f' to directly replace the symlink |
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# but 'mv' is an atomic operation so it should be more fault-proof |
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# but 'mv' is an atomic operation so it should be more fault-proof |
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Lines 60-71
describe_show() {
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} |
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} |
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do_show() { |
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do_show() { |
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[[ -z "${@}" ]] || die -q "Too many parameters" |
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[[ -z ${@} ]] || die -q "Too many parameters" |
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write_list_start "Current POSIX shell implementation:" |
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write_list_start "Current POSIX shell implementation:" |
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if [[ -L "${ROOT}/bin/sh" ]]; then |
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if [[ -L ${ROOT}/bin/sh ]]; then |
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write_kv_list_entry "$(basename $(canonicalise ${ROOT}/bin/sh))" "" |
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write_kv_list_entry "$(basename $(readlink ${ROOT}/bin/sh))" "" |
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elif [[ -e "${ROOT}/bin/sh" ]]; then |
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elif [[ -e ${ROOT}/bin/sh ]]; then |
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write_kv_list_entry "(not a symlink)" "" |
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write_kv_list_entry "(not a symlink)" "" |
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else |
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else |
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write_kv_list_entry "(unset)" "" |
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write_kv_list_entry "(unset)" "" |
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Lines 79-91
describe_list() {
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} |
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} |
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do_list() { |
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do_list() { |
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[[ -z "${@}" ]] || die -q "Too many parameters" |
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[[ -z ${@} ]] || die -q "Too many parameters" |
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local i targets |
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local i targets |
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targets=( $(find_targets) ) |
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targets=( $(find_targets) ) |
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if [[ -n ${targets[@]} ]]; then |
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if [[ -n ${targets[@]} ]]; then |
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for (( i = 0; i < ${#targets[@]}; i++ )) ; do |
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for (( i = 0; i < ${#targets[@]}; i++ )) ; do |
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[[ ${targets[${i}]} == $(basename $(canonicalise ${ROOT}/bin/sh)) ]] && \ |
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[[ ${targets[${i}]} == $(basename $(readlink ${ROOT}/bin/sh)) ]] && \ |
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targets[${i}]="${targets[${i}]} $(highlight '*')" |
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targets[${i}]="${targets[${i}]} $(highlight '*')" |
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done |
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done |
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write_list_start "Available POSIX shell implementations:" |
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write_list_start "Available POSIX shell implementations:" |
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Lines 110-118
describe_set_parameters() {
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} |
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} |
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do_set() { |
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do_set() { |
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if [[ -z "${1}" ]]; then |
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if [[ -z ${1} ]]; then |
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die -q "Not enough parameters" |
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die -q "Not enough parameters" |
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elif [[ -n "${2}" ]]; then |
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elif [[ -n ${2} ]]; then |
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die -q "Too many parameters" |
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die -q "Too many parameters" |
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else |
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else |
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set_symlinks "${1}" |
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set_symlinks "${1}" |
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Lines 126-139
describe_update() {
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} |
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} |
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describe_update_options() { |
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describe_update_options() { |
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echo "--if-unset : Do not override existing implementation" |
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echo "ifunset : Do not override existing implementation" |
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} |
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} |
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do_update() { |
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do_update() { |
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[[ -z "${1}" || ( -z "${2}" && "${1}" == "--if-unset" ) ]] || \ |
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[[ -z ${1} || ( -z ${2} && ( ${1} == ifunset || ${1} == '--if-unset' ) ]] || \ |
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die -q "Usage error" |
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die -q "Usage error" |
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[[ "${1}" == "--if-unset" && -L "${ROOT}"/bin/sh && -x "${ROOT}"/bin/sh ]] && \ |
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[[ ( ${1} == ifunset || ${1} == '--if-unset' ) && -L ${ROOT}/bin/sh && -x ${ROOT}/bin/sh ]] && \ |
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return |
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return |
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set_symlinks 1 |
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set_symlinks 1 |
