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#!/bin/bash
detect_kver() {
local kver_validator='^[[:digit:]]+(\.[[:digit:]]+)+'
offset=$(hexdump -s 526 -n 2 -e '"%0d"' "$1" 2>/dev/null) || return 1
read kver _ < \
<(dd if="$1" bs=1 count=127 skip=$(( offset + 0x200 )) 2>/dev/null)
[[ $kver =~ $kver_validator ]] && printf "$kver"
}
_lsinitcpio() {
local cur opts
opts=(-a --analyze -c --config -h --help -l --list
-n --nocolor -V --version -v --verbose -x --extract)
_get_comp_words_by_ref cur
case $cur in
-*)
COMPREPLY=($(compgen -W "${opts[*]}" -- "$cur")) ;;
*)
_filedir ;;
esac
}
_find_kernel_versions() {
local -a matches
local dir f
for f in /boot/*; do
# only match regular files which pass validation
if [[ ! -L $f && -f $f ]] && kver=$(detect_kver "$f"); then
matches+=("$f")
fi
done
# add completions based on kernel versions in /lib/modules
for dir in /lib/modules/*/kernel; do
dir=${dir%/kernel}
matches+=("${dir#/lib/modules/}")
done
COMPREPLY=($(compgen -W "${matches[*]}" -- $cur))
}
_files_from_dirs() {
local files stripsuf d f
if [[ $1 = -s ]]; then
stripsuf=$2
shift 2
fi
for d in "$@"; do
for f in "$d"/*; do
[[ -f $f ]] && files+=("${f##*/}")
done
done
printf '%s\n' "${files[@]%$stripsuf}"
}
_mkinitcpio() {
local action cur prev opts
opts=(-A --addhooks -c --config -g --generate -H --hookhelp -h --help -k --kernel
-L --listhooks -M --automods -n --nocolor -p --preset -r --moduleroot
-S --skiphooks -s --save -t --builddir -V --version -v --verbose -z --compress)
_get_comp_words_by_ref cur prev
case $prev in
-[cg]|--config|--generate)
_filedir ;;
-r|--moduleroot|-t|--builddir)
_filedir -d ;;
-k|--kernel)
_find_kernel_versions ;;
-p|--preset)
COMPREPLY=($(compgen -W "$(_files_from_dirs -s .preset /etc/mkinitcpio.d)" -- "$cur")) ;;
-[AHS]|--add|--hookhelp|--skiphooks)
COMPREPLY=($(compgen -W "$(_files_from_dirs {/usr,}/lib/initcpio/install)" -- "$cur")) ;;
*)
COMPREPLY=($(compgen -W "${opts[*]}" -- "$cur")) ;;
esac
}
complete -F _mkinitcpio mkinitcpio
complete -F _lsinitcpio lsinitcpio
# vim: set et ts=4 sw=4 ft=sh:
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