dotfiles/bootstrap/update_package_list.sh

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#!/usr/bin/env bash
BOOTSTRAP_DIR=${BOOTSTRAP_DIR:-$(pwd)/bootstrap}
INPUTFILES=$(find "${BOOTSTRAP_DIR}" -type f -name 'packages*.tsv')
OUTPUTFILE=${BOOTSTRAP_DIR}/packages_testing.tsv
pkg_all=$(pacman -Qqett)
pkg_repo=$(pacman -Qqn)
pkg_aur=$(pacman -Qqm)
while getopts "nvhf:" opt; do
case "$opt" in
n) DRYRUN=true ;;
v) VERBOSE=true ;;
f) OUTPUTFILE="$OPTARG" ;;
h | *)
{
printf "\nUpdate the list of installed packages.\n\nWill compare packages committed to the dotfile repository\nand those currently installed (on an Arch system, using pacman).\nUpdates the list of committed packages in repository\nand prints out the differences as a diff.\n\nOptions:\n\n\t-h\tDisplay this help.\n\t-v\tShow verbose information.\n\t-n\tPrint out changes without changing anything (dry-run).\n"
exit 1
}
;;
esac
done
# get all existing written packages
if [ -n "$INPUTFILES" ]; then
INPUT=$(cat $INPUTFILES | grep -v -e '^Name Description Source Target' | sort)
else
INPUT=""
fi
print_msg() {
# shellcheck disable=2059
[ -n "$VERBOSE" ] && printf "$@"
}
# tsv file:
# packagename, description, source, target
# toot a toot manager A D
if [ -f "${OUTPUTFILE}_TEMP" ]; then
rm "${OUTPUTFILE}_TEMP"
fi
touch "${OUTPUTFILE}_TEMP"
# create new package list
for pkg in $pkg_all; do
source=""
if echo "$pkg_repo" | grep -F -q -x "$pkg"; then
source="R"
elif echo "$pkg_aur" | grep -F -q -x "$pkg"; then
source="A"
else
echo "ERROR: The package $pkg could not be found in repositories or AUR."
exit 1
fi
desc=$(pacman -Qs "$pkg" | grep -A1 --color "local/$pkg\s" | tail -n1)
#remove leading whitespace
desc="${desc#"${desc%%[![:space:]]*}"}"
target=""
found_line=$(echo "$INPUT" | grep -e "^$pkg")
if [ -n "$found_line" ]; then
target=$(echo "$found_line" | cut -f4)
print_msg "Updating pkg: %s:%s from: %s, for: %s\n" "$pkg" "$desc" "$source" "$target"
else
print_msg "Adding pkg: %s:%s from: %s, for: %s\n" "$pkg" "$desc" "$source" "$target"
fi
printf "%s\t%s\t%s\t%s\n" "$pkg" "$desc" "$source" "$target" >>"${OUTPUTFILE}_TEMP"
done
# notify on any removed packages
while read -r line; do
if ! echo "$line" | cut -f1 | xargs -I _ grep -F -q -x _ <(echo "$pkg_all"); then
printf "REMOVED: %s\n" "$line"
fi
done <<<"<(echo $INPUT | tail +2)"
# show file changes
if [ -f "$OUTPUTFILE"_TEMP ]; then
changes=$(diff --color=always -y --suppress-common-lines <(echo "$INPUT") <(sort "$OUTPUTFILE"_TEMP | tail -n+2))
printf "FILE CHANGES:\n=============\n%s" "$changes"
fi
# actually write changes to file
if [ -z "$DRYRUN" ]; then
while IFS= read -r line; do
sed -i -e "/^${line//\//\\/}$/d" "$OUTPUTFILE"_TEMP
done <<< "$INPUT"
cat <(printf "Name\tDescription\tSource\tTarget\n") "${OUTPUTFILE}_TEMP" > "$OUTPUTFILE"
fi
rm "${OUTPUTFILE}_TEMP"