telegram-bot-bash/modules/background.sh
2019-05-19 13:59:36 +02:00

100 lines
2.0 KiB
Bash

#!/bin/bash
# file: modules/background.sh
# do not edit, this file will be overwritten on update
# This file is public domain in the USA and all free countries.
# Elsewhere, consider it to be WTFPLv2. (wtfpl.net/txt/copying)
#
#### $$VERSION$$ v0.80-dev3-4-ge7d2eff
# source from commands.sh if you want ro use interactive or background jobs
######
# interactive and background functions
# old syntax as aliases
background() {
start_back "${CHAT[ID]}" "$1" "$2"
}
startproc() {
start_proc "${CHAT[ID]}" "$1" "$2"
}
checkback() {
check_back "${CHAT[ID]}" "$1"
}
checkproc() {
check_proc "${CHAT[ID]}" "$1"
}
killback() {
kill_back "${CHAT[ID]}" "$1"
}
killproc() {
kill_proc "${CHAT[ID]}" "$1"
}
# inline and backgound functions
# $1 chatid
# $2 program
# $3 jobname
start_back() {
local fifo; fifo="${TMPDIR:-.}/$(procname "$1")"
echo "$1:$3:$2" >"${fifo}$3-back.cmd"
start_proc "$1" "$2" "back-$3-"
}
# $1 chatid
# $2 program
# $3 prefix
start_proc() {
[ "$2" = "" ] && return
local fifo; fifo="${TMPDIR:-.}/$(procname "$1" "$3")"
kill_proc "$1" "$3"
mkfifo "${fifo}"
nohup bash -c "{ tail -f \"${fifo}\" | $2 \"\" \"\" \"$fifo\" | \"${SCRIPT}\" outproc \"${1}\" \"${fifo}\"
rm \"${fifo}\"; [ -s \"${fifo}.log\" ] || rm -f \"${fifo}.log\"; }" &>>"${fifo}.log" &
}
# $1 chatid
# $2 jobname
check_back() {
check_proc "$1" "back-$2-"
}
# $1 chatid
# $2 prefix
check_proc() {
[ "$(proclist "$(procname "$1" "$2")")" != "" ]
# shellcheck disable=SC2034
res=$?; return $?
}
# $1 chatid
# $2 jobname
kill_back() {
kill_proc "$1" "back-$2-"
rm -f "${TMPDIR:-.}/$(procname "$1")$2-back.cmd"
}
# $1 chatid
# $2 prefix
kill_proc() {
local fifo prid
fifo="$(procname "$1" "$2")"
prid="$(proclist "${fifo}")"
fifo="${TMPDIR:-.}/${fifo}"
# shellcheck disable=SC2086
[ "${prid}" != "" ] && kill ${prid}
[ -s "${fifo}.log" ] || rm -f "${fifo}.log"
[ -p "${fifo}" ] && rm -f "${fifo}";
}
# $1 chat
# $2 message
forward_interactive() {
local fifo; fifo="${TMPDIR:-.}/$(procname "$1")"
[ -p "${fifo}" ] && echo "$2" >"${fifo}"
}