NBash

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#!/bin/sh
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#
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# Copyright (C) 2013  Etersoft
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# Copyright (C) 2013  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-query
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load_helper epm-print
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epm_provides_files()
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{
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    local pkg_files="$*"
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    [ -n "$pkg_files" ] || return
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    local PKGTYPE="$(get_package_type $pkg_files)"
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    case $PKGTYPE in
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        rpm)
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            assure_exists rpm
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            if [ -n "$short" ] ; then
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                docmd rpm -q --provides -p $pkg_files | sed -e 's| .*||'
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            else
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                docmd rpm -q --provides -p $pkg_files
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            fi
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            ;;
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        deb)
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            assure_exists dpkg
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            # FIXME: will we provide ourself?
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            docmd dpkg -I $pkg_files | grep "^ *Provides:" | sed "s|^ *Provides:||g"
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            ;;
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        *)
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            fatal "Have no suitable command for $PMTYPE"
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            ;;
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    esac
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}
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epm_provides_names()
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{
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    local pkg_names="$*"
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    local CMD
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    [ -n "$pkg_names" ] || return
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# by package name
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case $PMTYPE in
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    apt-rpm)
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        # FIXME: need fix for a few names case
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        # TODO: separate this function to two section
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        if is_installed $pkg_names ; then
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            CMD="rpm -q --provides"
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        else
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            EXTRA_SHOWDOCMD=' | grep "Provides:"'
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            if [ -n "$short" ] ; then
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                docmd apt-cache show $pkg_names | grep "Provides:" | sed -e 's|, |\n|g' -e 's|Provides: ||' -e 's| .*||'
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            else
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                docmd apt-cache show $pkg_names | grep "Provides:" | sed -e 's|, |\n|g' -e 's|Provides: ||'
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            fi
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            return
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        fi
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        ;;
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    urpm-rpm)
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        if is_installed $pkg_names ; then
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            CMD="rpm -q --provides"
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        else
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            CMD="urpmq --provides"
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        fi
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        ;;
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    zypper-rpm)
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        if is_installed $pkg_names ; then
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            CMD="rpm -q --provides"
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        else
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            fatal "FIXME: use hi level commands or download firstly"
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        fi
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        ;;
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    yum-rpm)
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        if is_installed $pkg_names ; then
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            CMD="rpm -q --provides"
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        else
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            fatal "FIXME: use hi level commands or download firstly"
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        fi
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        ;;
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    dnf-rpm)
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        if is_installed $pkg_names ; then
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            CMD="rpm -q --provides"
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        else
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            CMD="dnf repoquery --provides"
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        fi
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        ;;
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    emerge)
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        assure_exists equery
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        CMD="equery files"
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        ;;
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#    yum-rpm)
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#        CMD="yum deplist"
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#        ;;
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    pkgng)
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        CMD="pkg info -b"
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        ;;
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    apt-dpkg)
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        # FIXME: need fix for a few names case
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        if is_installed $pkg_names ; then
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            showcmd dpkg -s $pkg_names
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            a='' dpkg -s $pkg_names | grep "^Provides:" | sed "s|^Provides:||g"
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            return
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        else
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            EXTRA_SHOWDOCMD=' | grep "Provides:"'
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            docmd apt-cache show $pkg_names | grep "Provides:" | sed -e 's|, |\n|g' | grep -v "^Provides:"
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            return
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        fi
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        ;;
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    *)
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        fatal "Have no suitable command for $PMTYPE"
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        ;;
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esac
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if [ -n "$direct" ] && [ "$CMD" = "rpm -q --provides" ] ; then
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    # do universal provides
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    docmd $CMD $pkg_names | sed -e 's| .*||' | grep -F "()"
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    a= $CMD $pkg_names | sed -e 's| .*||' | grep -v -E "^(lib|ld-linux)"
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elif [ -n "$short" ] ; then
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    docmd $CMD $pkg_names | sed -e 's| .*||'
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else
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    docmd $CMD $pkg_names
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fi
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}
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epm_provides()
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{
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    # if possible, it will put pkg_urls into pkg_files or pkg_names
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    if [ -n "$pkg_urls" ] ; then
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        load_helper epm-download
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        __handle_pkg_urls_to_checking
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    fi
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    [ -n "$pkg_filenames" ] || fatal "Provides: package name is missed"
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    epm_provides_files $pkg_files
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    # shellcheck disable=SC2046
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    epm_provides_names $(print_name $pkg_names)
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}
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