forked from Ponysearch/Ponysearch
3ed82a97af
BTW: tidy up some code style and fix some issues reported by the linter. Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
354 lines
8.6 KiB
Bash
Executable file
354 lines
8.6 KiB
Bash
Executable file
#!/usr/bin/env bash
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# -*- coding: utf-8; mode: sh -*-
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# shellcheck disable=SC2059,SC1117,SC2162,SC2004
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if [[ -z "${REPO_ROOT}" ]]; then
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REPO_ROOT=$(dirname "${BASH_SOURCE[0]}")
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while [ -h "${REPO_ROOT}" ] ; do
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REPO_ROOT=$(readlink "${REPO_ROOT}")
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done
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REPO_ROOT=$(cd "${REPO_ROOT}/.." && pwd -P )
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fi
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if [[ -z ${TEMPLATES} ]]; then
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TEMPLATES="${REPO_ROOT}/utils/templates"
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fi
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if [[ -z "$CACHE" ]]; then
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CACHE="${REPO_ROOT}/cache"
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fi
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if [[ -z "$SYSTEMD_UNITS" ]]; then
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SYSTEMD_UNITS="/lib/systemd/system"
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fi
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if [[ -z ${DIFF_CMD} ]]; then
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DIFF_CMD="diff -u"
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if command -v colordiff >/dev/null; then
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DIFF_CMD="colordiff -u"
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fi
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fi
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sudo_or_exit() {
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# usage: sudo_or_exit
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if [ ! "$(id -u)" -eq 0 ]; then
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err_msg "this command requires root (sudo) privilege!" >&2
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exit 42
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fi
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}
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rst_title() {
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# usage: rst_title <header-text> [part|chapter|section]
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case ${2-chapter} in
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part) printf "\n${1//?/=}\n$1\n${1//?/=}\n";;
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chapter) printf "\n${1}\n${1//?/=}\n";;
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section) printf "\n${1}\n${1//?/-}\n";;
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*)
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err_msg "invalid argument '${2}' in line $(caller)"
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return 42
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;;
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esac
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}
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if command -v fmt >/dev/null; then
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export FMT="fmt -u"
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else
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export FMT="cat"
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fi
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rst_para() {
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# usage: RST_INDENT=1 rst_para "lorem ipsum ..."
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local prefix=''
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if ! [[ -z $RST_INDENT ]] && [[ $RST_INDENT -gt 0 ]]; then
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prefix="$(for i in $(seq 1 "$RST_INDENT"); do printf " "; done)"
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echo -en "\n$*\n" | $FMT | prefix_stdout "$prefix"
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else
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echo -en "\n$*\n" | $FMT
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fi
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}
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err_msg() { echo -e "ERROR: $*" >&2; }
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warn_msg() { echo -e "WARN: $*" >&2; }
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info_msg() { echo -e "INFO: $*"; }
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clean_stdin() {
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if [[ $(uname -s) != 'Darwin' ]]; then
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while read -n1 -t 0.1; do : ; done
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fi
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}
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wait_key(){
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# usage: waitKEY [<timeout in sec>]
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clean_stdin
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local _t=$1
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[[ ! -z $FORCE_TIMEOUT ]] && _t=$FORCE_TIMEOUT
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[[ ! -z $_t ]] && _t="-t $_t"
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# shellcheck disable=SC2086
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read -s -n1 $_t -p "** press any [KEY] to continue **"
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echo
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clean_stdin
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}
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ask_yn() {
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# usage: ask_yn <prompt-text> [Ny|Yn] [<timeout in sec>]
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local EXIT_YES=0 # exit status 0 --> successful
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local EXIT_NO=1 # exit status 1 --> error code
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local _t=$3
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[[ ! -z $FORCE_TIMEOUT ]] && _t=$FORCE_TIMEOUT
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[[ ! -z $_t ]] && _t="-t $_t"
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case "${2}" in
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Yn)
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local exit_val=${EXIT_YES}
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local choice="[YES/no]"
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local default="Yes"
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;;
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*)
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local exit_val=${EXIT_NO}
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local choice="[NO/yes]"
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local default="No"
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;;
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esac
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echo
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while true; do
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clean_stdin
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printf "$1 ${choice} "
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# shellcheck disable=SC2086
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read -n1 $_t
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if [[ -z $REPLY ]]; then
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printf "$default\n"; break
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elif [[ $REPLY =~ ^[Yy]$ ]]; then
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exit_val=${EXIT_YES}
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printf "\n"
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break
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elif [[ $REPLY =~ ^[Nn]$ ]]; then
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exit_val=${EXIT_NO}
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printf "\n"
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break
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fi
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_t=""
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err_msg "invalid choice"
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done
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clean_stdin
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return $exit_val
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}
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tee_stderr () {
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# usage::
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# tee_stderr 1 <<EOF | python -i
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# print("hello")
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# EOF
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# ...
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# >>> print("hello")
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# hello
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local _t="0";
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if [[ ! -z $1 ]] ; then _t="$1"; fi
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(while read line; do
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# shellcheck disable=SC2086
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sleep $_t
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echo -e "$line" >&2
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echo "$line"
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done)
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}
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prefix_stdout () {
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# usage: <cmd> | prefix_stdout [prefix]
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local prefix=" | "
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if [[ ! -z $1 ]] ; then prefix="$1"; fi
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(while IFS= read line; do
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echo -e "${prefix}$line"
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done)
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}
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append_line() {
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# usage: append_line <line> <file>
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#
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# Append line if not exists, create file if not exists. E.g::
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#
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# append_line 'source ~/.foo' ~/bashrc
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local LINE=$1
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local FILE=$2
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grep -qFs -- "$LINE" "$FILE" || echo "$LINE" >> "$FILE"
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}
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cache_download() {
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# usage: cache_download <url> <local-filename>
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local exit_value=0
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if [[ ! -z ${SUDO_USER} ]]; then
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sudo -u "${SUDO_USER}" mkdir -p "${CACHE}"
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else
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mkdir -p "${CACHE}"
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fi
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if [[ -f "${CACHE}/$2" ]] ; then
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info_msg "already cached: $1"
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info_msg " --> ${CACHE}/$2"
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fi
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if [[ ! -f "${CACHE}/$2" ]]; then
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info_msg "caching: $1"
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info_msg " --> ${CACHE}/$2"
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if [[ ! -z ${SUDO_USER} ]]; then
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sudo -u "${SUDO_USER}" wget --progress=bar -O "${CACHE}/$2" "$1" ; exit_value=$?
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else
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wget --progress=bar -O "${CACHE}/$2" "$1" ; exit_value=$?
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fi
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if $exit_value; then
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err_msg "failed to download: $1"
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fi
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fi
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}
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choose_one() {
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# usage:
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#
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# DEFAULT_SELECT= 2 \
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# choose_one <name> "your selection?" "Coffee" "Coffee with milk"
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local default=${DEFAULT_SELECT-1}
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local REPLY
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local env_name=$1 && shift
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local choice=$1;
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local max="${#@}"
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local _t
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[[ ! -z $FORCE_TIMEOUT ]] && _t=$FORCE_TIMEOUT
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[[ ! -z $_t ]] && _t="-t $_t"
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list=("$@")
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echo -e "Menu::"
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for ((i=1; i<= $(($max -1)); i++)); do
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if [[ "$i" == "$default" ]]; then
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echo -e " $i.) ${list[$i]} [default]"
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else
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echo -e " $i.) ${list[$i]}"
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fi
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done
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while true; do
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clean_stdin
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printf "$1 [$default] "
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if (( 10 > $max )); then
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# shellcheck disable=SC2086
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read -n1 $_t
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else
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# shellcheck disable=SC2086,SC2229
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read $_t
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fi
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# selection fits
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[[ $REPLY =~ ^-?[0-9]+$ ]] && (( $REPLY > 0 )) && (( $REPLY < $max )) && break
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# take default
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[[ -z $REPLY ]] && REPLY=$default && break
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_t=""
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err_msg "invalid choice"
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done
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echo
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clean_stdin
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eval "$env_name"='${list[${REPLY}]}'
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}
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install_template() {
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# usage:
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#
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# install_template [--no-eval] {file} [{owner} [{group} [{chmod}]]]
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#
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# install_template --no-eval /etc/updatedb.conf root root 644
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local do_eval=1
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if [[ "$1" == "--no-eval" ]]; then
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do_eval=0; shift
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fi
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local dst="${1}"
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local owner=${2-$(id -un)}
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local group=${3-$(id -gn)}
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local chmod=${4-644}
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local _reply=""
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info_msg "install: ${dst}"
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if [[ ! -f "${TEMPLATES}${dst}" ]] ; then
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err_msg "${TEMPLATES}${dst} does not exists"
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err_msg "... can't install $dst / exit installation with error 42"
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wait_key 30
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return 42
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fi
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local template_file="${TEMPLATES}${dst}"
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if [[ "$do_eval" == "1" ]]; then
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info_msg "BUILD template ${template_file}"
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if [[ -f "${TEMPLATES}${dst}" ]] ; then
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template_file="${CACHE}${dst}"
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mkdir -p "$(dirname "${template_file}")"
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# shellcheck disable=SC2086
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eval "echo \"$(cat ${TEMPLATES}${dst})\"" > "${template_file}"
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else
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err_msg "failed ${template_file}"
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return 42
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fi
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fi
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mkdir -p "$(dirname "${dst}")"
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if [[ ! -f "${dst}" ]]; then
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info_msg "install: ${template_file}"
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sudo -H install -v -o "${owner}" -g "${group}" -m "${chmod}" \
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"${template_file}" "${dst}" | prefix_stdout
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return $?
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fi
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if [[ -f "${dst}" ]] && cmp --silent "${template_file}" "${dst}" ; then
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info_msg "file ${dst} allready installed"
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return 0
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fi
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info_msg "file ${dst} allready exists on this host"
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while true; do
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choose_one _reply "choose next step with file $dst" \
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"replace file" \
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"leave file unchanged" \
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"interactiv shell" \
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"diff files"
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case $_reply in
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"replace file")
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info_msg "install: ${template_file}"
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sudo -H install -v -o "${owner}" -g "${group}" -m "${chmod}" \
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"${template_file}" "${dst}" | prefix_stdout
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break
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;;
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"leave file unchanged")
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break
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;;
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"interactiv shell")
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echo "// edit ${dst} to your needs"
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echo "// exit with CTRL-D"
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sudo -H -u "${owner}" -i
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$DIFF_CMD "${dst}" "${template_file}"
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if ask_yn "did you edit ${template_file} to your needs?"; then
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break
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fi
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;;
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"diff files")
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$DIFF_CMD "${dst}" "${template_file}" | prefix_stdout
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esac
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done
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}
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