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#!/bin/sh
export STOW_DIR=/etc/portage/stow
need_root() {
if test "$(id -u)" -ne 0; then
printf 'This action requires superuser access.\n'
exit 1
fi
}
add() {
need_root
stow -S "$@"
}
remove() {
need_root
stow -D "$@"
}
flush() {
need_root
list | xargs -- stow -D
}
rebuild() {
need_root
if test $# -gt 0; then
stow -R "$@"
else
list | xargs -- stow -R
fi
}
list() {
subcmd="$1"
shift
case $subcmd in
active) list_active;;
all) list_all;;
available) list_available;;
*) list_active;;
esac
}
list_active() {
# Note: we de not escape any special characters in $STOW_DIR since it is
# assumed we are in full control of its contents.
# XXX: -r for xargs is a GNU extension
find "$STOW_DIR/.." -type l -print0 2>/dev/null \
| xargs -r0 readlink -f \
| sed -n ":^$STOW_DIR: s:^$STOW_DIR/\([^/]\+\)/.*:\1:p" \
| sort -u
}
list_all() {
ls -1 "$STOW_DIR"
}
list_available() {
tmp="$(mktemp)" || exit 1
list_active > "$tmp"
list_all | comm -13 "$tmp" -
rm -f "$tmp"
}
cmd="$1"
shift
case $cmd in
add) add "$@";;
flush) flush;;
list) list "$@";;
rebuild) rebuild "$@";;
remove) remove "$@";;
*) list_active;;
esac
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