[gentoo-commits] gentoo-x86 commit in app-admin/eselect-lua/files: lua.eselect-1

[Matti Bickel (mabi)]

mabi        14/04/22 21:31:35

  Added:                lua.eselect-1
  Log:
  Introduce slotted versions of lua. Use with eselect to define the "main" 
version.
  
  (Portage version: 2.2.10/cvs/Linux x86_64, signed Manifest commit with key 
0xDDF971F118EEA5E6!)

Revision  Changes    Path
1.1                  app-admin/eselect-lua/files/lua.eselect-1

file : 
http://sources.gentoo.org/viewvc.cgi/gentoo-x86/app-admin/eselect-lua/files/lua.eselect-1?rev=1.1&view=markup
plain: 
http://sources.gentoo.org/viewvc.cgi/gentoo-x86/app-admin/eselect-lua/files/lua.eselect-1?rev=1.1&content-type=text/plain

Index: lua.eselect-1
===================================================================
# -*-eselect-*-  vim: ft=eselect
# Copyright 2014-2014 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2

inherit config multilib

DESCRIPTION="Manage lua symlinks"
MAINTAINER="m...@gentoo.org"

HEADER_FILES="lauxlib.h luaconf.h lua.h lua.hpp lualib.h"

remove_symlinks() {
        rm -f "${EROOT}"/usr/bin/{lua,luac} &>/dev/null 
        for dir in $(get_libdirs) ; do
                rm -f "${EROOT}"${dir}/liblua.so &>/dev/null && \
                rm -f "${EROOT}"${dir}/pkgconfig/lua.pc &>/dev/null
        done
        for f in $HEADER_FILES ; do
                rm -f "${EROOT}"/usr/include/$f
        done
        rm -f "${EROOT}"/usr/share/man/man1/{lua,luac}.1{,.gz,.bz2,.lzma} 
&>/dev/null
}

set_symlinks() {
        local ver=$1
        ln -s "${EROOT}"/usr/bin/lua{$ver,}
        ln -s "${EROOT}"/usr/bin/luac{$ver,}
        for dir in $(get_libdirs) ; do
                ln -s "${dir}"/liblua{$ver,}.so
                ln -s "${dir}"/pkgconfig/lua{$ver,}.pc
        done
        for orig in "${EROOT}"/usr/share/man/man1/lua*$ver.1* ; do
                ln -s "${orig}" "${orig//$ver}"
        done
        for f in $HEADER_FILES ; do
                ln -s "${EROOT}"/usr/include/lua$ver/$f "${EROOT}"/usr/include
        done
}

get_libdirs() {
        local dir libdirs
        for dir in $(list_libdirs); do
                [[ -L ${EROOT}/usr/${dir} ]] && continue
                ls "${EROOT}"/usr/${dir}/liblua*.* > /dev/null 2>&1 || continue

                libdirs+=' '/usr/${dir}
        done
        echo ${libdirs:-/usr/lib}
}

find_targets() {
        local dirs
        local prefix="${EROOT}/usr/bin/lua"
        for f in ${prefix}5* ; do
                dirs="${dirs} ${f##$prefix}"
        done
        echo $dirs
}

resolv_target() {
        local targets=( $(find_targets) )
        if is_number $1; then
                [[ $1 -le ${#targets[@]} && $1 -gt 0 ]] && echo "${targets[ $(( 
$1 - 1 )) ]}"
        elif has $1 ${targets[@]}; then
          echo $1
        fi
}

get_active_version() {
        readlink -e "${EROOT}"/usr/bin/lua | sed -ne 
"s:.*/usr/bin/lua\([\d.-]*\):\1:p"
}

## Actual actions

## set action

describe_set() {
        echo "Sets the current version of lua"
}

describe_set_parameters() {
        echo '<target>'
}

describe_set_options() {
        echo 'target:   Target name or number (from "list" action)'
}


do_set() {
        local target=$(resolv_target $1)
        if [[ -z "${target}" ]]; then
          die -q "You need to specify a version"
        fi
        remove_symlinks
        set_symlinks $target
}

## List action

describe_list() {
        echo 'Lists available lua versions'
}

do_list() {
        local targets
        local a
        targets=( $(find_targets) )
        a=$(get_active_version)
        for (( i = 0; i < ${#targets[@]}; i++ )) ; do
                [[ $a == ${targets[i]} ]] && targets[i]=$(highlight_marker 
"${targets[i]}")
        done
        write_numbered_list -m '(none found)' "${targets[@]}"
}

## Show action

describe_show() {
        echo 'Show the active lua version'
}

do_show() {
        get_active_version
}

## update action

describe_update() {
        echo 'Automatically update the lua version'
}

describe_update_options() {
        echo 'ifunset : Do not override existing implementation'
}

do_update() {
        [[ -n ${1} && ! ( ${1} == ifunset || ${1} == '--if-unset' ) ]] && \
                die -q 'Usage error'

        [[ ( ${1} == ifunset || ${1} == '--if-unset' ) && -n 
$(get_active_version) ]] && \
                return

        remove_symlinks
        
        local targets=( $(find_targets) )
        if [[ -n ${#targets[@]} ]] ; then
                local target=${targets[${#targets[@]} - 1]}
                set_symlinks $target || echo 'Nothing to update'
        fi
}