NBash

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#!/bin/sh
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#
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# Copyright (C) 2023  Etersoft
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# Copyright (C) 2023  Vitaly Lipatov <lav@etersoft.ru>
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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load_helper epm-sh-altlinux
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load_helper epm-assure
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load_helper epm-repack
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[ -n "$EPM_PACK_SCRIPTS_DIR" ] || EPM_PACK_SCRIPTS_DIR="$CONFIGDIR/pack.d"
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# <packname> <abstarname> [packversion]
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# fills returntarname with returned tar name or empty
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__epm_pack_run_handler()
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{
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    local packname="$1"
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    local tarname="$2"
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    local packversion="$3"
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    local url="$3"
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    returntarname=''
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    local repackcode="$EPM_PACK_SCRIPTS_DIR/$packname.sh"
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    [ -x "$repackcode" ] || return
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    [ -f "$repackcode.rpmnew" ] && warning "There is .rpmnew file(s) in $EPM_PACK_SCRIPTS_DIR dir. The pack script can be outdated."
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    # a file to keep filename of generated tarball
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    filefortarname="$(pwd)/filefortarname"
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    [ "$PROGDIR" = "/usr/bin" ] && SCPATH="$PATH" || SCPATH="$PROGDIR:$PATH"
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    local bashopt=''
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    [ -n "$debug" ] && bashopt='-x'
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    #info "Running $($script --description 2>/dev/null) ..."
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    # TODO: add url info here
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    ( unset EPMCURDIR ; export PATH=$SCPATH ; docmd $CMDSHELL $bashopt $repackcode "$tarname" "$filefortarname" "$packversion" "$url") || fatal
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    returntarname="$(cat "$filefortarname")" || fatal "pack script $repackcode didn't set tarname"
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    local i
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    for i in $returntarname ; do
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        [ -s "$i" ] || fatal "pack script for $packname returned unexist $i file"
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    done
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    return 0
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}
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# we run this function in a tmpdir
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__epm_pack()
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{
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    local packname="$1"
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    local URL="$4"
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    # fills returntarname with packed tar
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    __epm_pack_run_handler "$@" || fatal "Can't find pack script for packname $packname"
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    if [ -n "$download_only" ] ; then
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        mv $returntarname $EPMCURDIR
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        return
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    fi
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    # TODO: merge eepm.yaml here (common with $returntarname.eepm.yaml)
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    # add upstream_url: $URL too
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    # note: this repack related code here for follow reasons:
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    #  * repack by default if we have repack rule
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    #  * get repacked files
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    #  * install (repacked) files
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    # the most replacement is epm repack [--install] or epm install [--repack]
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    # FIXME: check for every package would be more reliable
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    # by default
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    dorepack='--repack'
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    # don't repack by default there is our pkg format
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    __epm_split_by_pkg_type $PKGFORMAT $returntarname && dorepack=''
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    # repack if we have a repack rule for it
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    [ -z "$norepack" ] && __epm_have_repack_rule $returntarname && dorepack='--repack'
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    # repack if forced
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    [ -n "$repack" ] && dorepack='--repack'
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    local pkgnames
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    if [ -n "$dorepack" ]  ; then
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        __epm_repack $returntarname
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        [ -n "$repacked_pkgs" ] || fatal "Can't repack $returntarname"
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        # remove packed file if we have repacked one
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        rm -f $returntarname
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        pkgnames="$repacked_pkgs"
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    else
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        pkgnames="$returntarname"
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    fi
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    if [ -n "$install" ] ; then
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        docmd epm install $pkgnames
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        return
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    fi
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    # we need put result in the cur dir
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    mv -v $pkgnames $EPMCURDIR || fatal
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    local i
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    for i in $pkgnames ; do
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        [ -r "$i.eepm.yaml" ] && mv -v "$i.eepm.yaml" $EPMCURDIR
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    done
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    return 0
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}
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epm_pack_help()
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{
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    cat <<EOF
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epm pack - create rpm package from files
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Usage: epm pack [options] <packname> <tar|url|dir> [version]
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Options:
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    <packname>            - receipt
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    <dir>                 - create tarball from the dir before
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    <url>                 - download tar from url
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    [version]             - force version for unversioned sources
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    --install             - install after pack result
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    --repack              - force repack ever if returned package can be installed without repack
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    --download-only       - save pack result and exit
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    --save-only           - save repacked packages and exit (this is default behaviour)
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EOF
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}
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epm_pack()
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{
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    if [ "$1" = "-h" ] || [ "$1" = "--help" ] ; then
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        epm_pack_help
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        exit
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    fi
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    local tmpdir
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    tmpdir="$(mktemp -d --tmpdir=$BIGTMPDIR)" || fatal
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    remove_on_exit "$tmpdir"
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    local packname="$1"
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    local tarname="$2"
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    local packversion="$3"
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    local url=''
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    [ -n "$packname" ] || fatal "run with packname, see --help"
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    if is_url "$tarname"; then
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        url="$tarname"
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        pkg_urls="$tarname"
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        load_helper epm-download
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        cd $tmpdir || fatal
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        __handle_pkg_urls_to_install
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        [ -n "$pkg_files" ] || fatal "Can't download $tarname"
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        tarname="$(realpath "$pkg_files")"
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    elif [ -d "$tarname" ] ; then
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        tarname="$(realpath "$tarname")"
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    elif [ -s "$tarname" ] ; then
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        # get full path for real name
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        tarname="$(realpath "$tarname")"
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    else
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        # just pass name
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        true
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    fi
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    cd $tmpdir || fatal
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    __epm_pack "$packname" "$tarname" "$packversion" "$url"
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}
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