zero/home-environments/radio/files/.config/luakit/tools/adblock-update.sh

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#!/bin/bash
#
# Usage: adblock-update.sh [-h] [URL]
# This script can be used to download/update filterlists for the luakit adblock-module
# It will only update the file if the server-side version is newer.
#
# URL URL of the filterlist to download, leave empty to download Easylist
# -h, --help Display this help-message and exit
# help message
function usage ()
{
cat << EOF
Usage: $0 [-h] [URL]
This script can be used to download/update filterlists for the luakit adblock-module.
It will only update the file if the server-side version is newer.
URL URL of the filterlist to download, leave empty to download Easylist
-h, --help Display this help message and exit
EOF
}
# check for $XDG_DATA_HOME or fallback
[[ -z "$XDG_DATA_HOME" ]] && DATADIR="$HOME/.local/share" || DATADIR="$XDG_DATA_HOME"
# use URL if given else default to easylist.txt
if (( $# == 1 )) || (( $# == 0 )); then
[[ ! -z $1 ]] && [[ $1 == "-h" ]] || [[ $1 == "--help" ]] && usage && exit 0 # check for -hflag
listurl="${1:-"https://easylist-downloads.adblockplus.org/easylist.txt"}"
listname="$(basename ${listurl})"
elif (( $# > 1 ));then
usage
exit 11
fi
# look for adblock directory || create
[[ -d "$DATADIR/luakit/adblock/" ]] || mkdir "$DATADIR/luakit/adblock/" && cd "$DATADIR/luakit/adblock/"
# backup the old list
[[ -f ${listname} ]] && cp -p ${listname} ${listname}.b
# try to download the file
wget -N --connect-timeout=10 --tries=20 --retry-connrefused --waitretry=5 ${listurl}
# if download failed move old file back in place
if (( $? != 0 )); then
[[ -f ${listname}.b ]] && cp -p ${listname}.b ${listname} && rm ${listname}.b
echo "Error: List Download Failed!"
exit 11
else
[[ -f ${listname}.b ]] && rm ${listname}.b # if all went well remove backup
echo "All went well. :)"
exit 0
fi