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#!/bin/sh
export STOW_DIR=/etc/portage/stow
err() {
printf "bosun: %s\n" "$@" >&2
}
errx() {
err "$@"
exit 1
}
usage() {
printf "usage: bosun add role ...\n" >&2
printf " bosun flush\n" >&2
printf " bosun [list [type ...]]\n" >&2
printf " bosun rebuild [role ...]\n" >&2
printf " bosun remove [role ...]\n" >&2
exit 1
}
need_role() {
test $# -gt 0 || errx "this command requires at least one role"
for dir in "$@"; do
test -d "$STOW_DIR/$dir" || errx "no such role '$dir' in $STOW_DIR"
done
}
need_root() {
test "$(id -u)" -eq 0 || errx "this action requires superuser access"
}
add() {
need_root
need_role "$@"
stow -S "$@"
}
remove() {
need_root
need_role "$@"
stow -D "$@"
}
flush() {
need_root
list | xargs -- stow -D
}
rebuild() {
need_root
if test $# -gt 0; then
need_role "$@"
stow -R "$@"
else
list | xargs -- stow -R
fi
}
list() {
subcmd="${1:-active}"
case $subcmd in
active) list_active;;
all) list_all;;
available) list_available;;
*) errx "no such list type '$subcmd'. Try: active, all, available"
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:-list}"
test $# -gt 0 && shift
case $cmd in
add) add "$@";;
flush) flush;;
list) list "$@";;
rebuild) rebuild "$@";;
del|delete|remove) remove "$@";;
*) err "no such command '$cmd'"; usage;;
esac
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