Detect latest available Xcode version

latest_xcode.sh

#!/usr/bin/env bash
latest_xcode() {
    local XcodePath XcodeVersion XcodeVersionMajor XcodeVersionMinor
    for XcodePath in /Applications/Xcode*.app
    do  
        XcodeVersion="$(defaults read "${XcodePath}/Contents/Info" CFBundleVersion)"
        XcodeVersionMajor=${XcodeVersion%%.*}
        if [ "$XcodeVersion" == "$XcodeVersionMajor" ]
        then
            XcodeVersionMinor=0
        else
            XcodeVersionMinor=${XcodeVersion##*.}
        fi
        [ -d "${XcodePath}/Contents/Developer" ] && printf "%08i%08i:%s\n" "$XcodeVersionMajor" "$XcodeVersionMinor" "${XcodePath}/Contents/Developer"
    done | sort -r | head -n 1 | cut -d: -f2 
}
export DEVELOPER_DIR="$(latest_xcode)"
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