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|
#!/bin/bash
readonly BE_VERBOSE=$( [[ "$1" == '-v' ]] && echo 1 || echo 0 )
readonly DB_DIR="$(su $(logname) -c 'mktemp -d -t parabola-dependents-XXXXXXXXXX')"
readonly CFG_FILE=${DB_DIR}/pacman-all.conf
readonly OPTS="--dbpath=${DB_DIR} --config=${CFG_FILE}"
readonly REPOS=( nonprism{-testing,} nonsystemd{-testing,} libre{-testing,}
kernels{-testing,} testing core extra community{-testing,}
pcr{-testing,} nonprism-multilib{-testing,} nonsystemd-multilib
libre-multilib{-testing,} multilib{-testing,} pcr-multilib{-testing,} )
readonly DUMMY_PKGBUILD='pkgname=%s
pkgver=0.0.0
pkgrel=42
pkgdesc="dummy PKGBUILD for experimentation"
arch=(armv7h i686 x86_64)
url=https://nowhere.man
license=(GPL)
source=(PKGBUILD)
sha256sums=(SKIP)
package() { echo "created '"'\${pkgname}'"' package" ; }'
readonly USAGE='USAGE:
parabola-dependents [-v] <PACKAGE_NAME>
List all parabola packages which are dependents of a specified package.
If <PACKAGE_NAME> does not exist, a dummy package will be created,
in memory, for pactree to reflect upon.
Options:
-v
Display the dependency-chain.'
readonly INVALID_ARG_MSG="no dependency package specified\n\n${USAGE}"
readonly UNPRIVILEGED_MSG="this script requires super-user privileges"
readonly CBLUE='\033[0;36m'
readonly CRED='\033[0;31m'
readonly CEND='\033[0m'
Log() # (log_fmt [args]*)
{
local log_fmt=$1 ; shift ;
local args="$@"
printf "${CBLUE}${log_fmt}${CEND}\n" ${args}
}
LogError() # (source_file func_name line_n)
{
local source_file="$1"
local func_name=$2
local line_n=$3
printf "${CRED}ERROR: in ${func_name}\n${line_n}: %s${CEND}\n" \
"$(awk "(( NR == ${line_n} )) { print }" ${source_file})"
}
Init() # (dep_pkgname)
{
local dep_pkgname=$1
local dummy_pkg=${dep_pkgname}-0.0.0-42-$(uname -m).pkg.tar.xz
printf "[options]\nArchitecture = auto\n" > ${CFG_FILE}
for repo in ${REPOS[@]}
do printf "[${repo}]\nInclude = /etc/pacman.d/mirrorlist\n" >> ${CFG_FILE}
done
printf "[parabola-dependents]\nServer = file://${DB_DIR}\n" >> ${CFG_FILE}
Log "updating database ...."
pacman ${OPTS} -Sy &> /dev/null || true
# create dummy for missing dependency package
if ! pacman ${OPTS} -Ss ^${dep_pkgname}$ &> /dev/null
then Log "package '${dep_pkgname}' not found - creating dummy"
cd ${DB_DIR}
printf "${DUMMY_PKGBUILD}\n" ${dep_pkgname} > ./PKGBUILD
su $(logname) -c 'makepkg --force &> /dev/null'
[[ -f ./${dummy_pkg} ]]
repo-add --new parabola-dependents.db.tar ./${dummy_pkg} &> /dev/null
Log "dummy package '${dep_pkgname}' created"
fi
pacman ${OPTS} -Sy&> /dev/null
}
IsArchRepo() # (repo)
{
local repo=$1 ; [[ "${repo}" =~ ^(community|core|extra|multilib|testing)$ ]]
}
ListParabolaDependents() # (dep_pkgname)
{
local dep_pkgname=$1
local dep_chain pkg repos
# TODO: --chain is a custom pactree feature
export PATH="/code/pacman-contrib/src:${PATH}"
Log "searching ...." ; echo ;
# TODO: --chain is a custom pactree feature
pactree ${OPTS} --sync --reverse --unique --chain ${dep_pkgname} | sort | \
while read dep_chain
do pkg=$(sed 's|.*<- ||' <<<${dep_chain})
repos=$(pacman ${OPTS} -Si ${pkg} | grep Repository | cut -d ':' -f 2)
for repo in ${REPOS}
do if IsArchRepo ${repo}
then echo "${repo}/${pkg} (ignoring)" >&2
else echo -n "${repo}/${pkg}"
(( $BE_VERBOSE )) && echo " [ ${dep_chain} ]" || echo ''
fi
done
done
}
Cleanup()
{
if [[ -d "${DB_DIR}" && "${DB_DIR}" =~ parabola-dependents ]]
then rm --force --recursive ${DB_DIR} ;
fi
}
set -o errexit -o errtrace
trap 'Cleanup' EXIT INT TERM
trap 'LogError "${BASH_SOURCE[0]}" "${FUNCNAME[0]}" "${LINENO}"' ERR
(( $BE_VERBOSE )) && shift || true
(( ! EUID )) || ! echo -e "${UNPRIVILEGED_MSG}" || false
(( $# )) || ! echo -e "${INVALID_ARG_MSG}" || false
Init $1
ListParabolaDependents $1
Cleanup
|
