#!/bin/bash

URL="https://sourceforge.net/projects/cdrtools/files/alpha"

# Get version number from tag name
VERSION=$(curl -s -L "$URL" | grep -o -P 'cdrtools-(\d+\.\d+[ab]\d+)\.tar\.gz' | sort -V | tail -n1)

# Trim prefix
VERSION=${VERSION//cdrtools-}

# Trim suffix
VERSION=${VERSION//.tar.gz}

echo "$VERSION"