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#!/bin/bash
# Shell script to install the latest version of ungoogled-chromium over the version on the machine if an update is available (using atom feed). User can specify a subgrouping (default is AppImage)
# path for downloading ungoogled-chromium and comparing version numbers (FIXME WIP)
# TODO write function to search through user's path for ungoogled-chromium
UG_PATH="$HOME/Applications/appimage/ungoogled-chromium_87.0.4280.141-1.1_linux.AppImage"
# Set default platform to look for new version from
DEFAULT_PLATFORM="AppImage"
# URL for atom feed
ATOM_URL="https://raw.githubusercontent.com/ungoogled-software/ungoogled-chromium-binaries/master/feed.xml"
PARSED_XML=$(curl -s $ATOM_URL | xml2)
# Get table of available platforms, with versions, and URLs on the following line
PLATFORM_TABLE=$(echo "$PARSED_XML" | grep -E '(/feed/entry/title=)|(/feed/entry/link/@href=)' | sed 's/^.*=//g')
# echo "$PARSED_XML"
echo "$PLATFORM_TABLE"
# Function to print a message that the currently installed ungoogled-chromium is up to date
nothing_to_do() {
echo "$UG_PATH is up to date"
}
# Function to check if $1 is higher version than $2
# $1 -> remote version (example: 91.0.4472.164)
# $2 -> local version (example: 91.0.4472.114)
# Return value:
# 0 -> $1 <= $2 (no need to update)
# 1 -> $1 > $2 (update available)
compare_version() {
echo "$1"
echo "$2"
# Break into arrays
local IFS='.'
read -ra V1 <<< "$1"
read -ra V2 <<< "$2"
for val in "${V1[@]}"; do
echo "$val"
done
echo ${#V1[@]}
for val in "${V2[@]}"; do
echo "$val"
done
echo ${#V2[@]}
# Determine shorter array (for the loop)
local LENGTH=${#V1[@]}
for (( i = 0 ; i < LENGTH ; i++ )); do
if [ "${V1[$i]}" -gt "${V2[$i]}" ]; then
return 1
elif [ "${V1[$i]}" -lt "${V2[$i]}" ]; then
return 0
fi
done
return 0
}
# DEBUG
#compare_version "91.0.4472.164" "91.0.4472.114"
# Determine local version if ungoogled-chromium is installed
if [ -x "$UG_PATH" ]; then
VERSION=$($UG_PATH --version | grep -E -o "[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+")
echo "$VERSION"
fi
# If ungoogled-chromium is installed on the machine, check if there is a newer version
LATEST=$(echo "$PLATFORM_TABLE" | grep "$DEFAULT_PLATFORM")
# TODO handle ambiguous DEFAULT_PLATFORM
# TODO handle if unknown DEFAULT_PLATFORM
if [ -n "$VERSION" ]; then
compare_version "$(echo "$LATEST" | head -n 1 | grep -E -o "[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+")" "$VERSION"
if [ $? -eq 0 ]; then
nothing_to_do
exit
else
echo "Gotta update!"
fi
fi
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