Rhino/JavaScriptをMacアプリに仕上げる方法 ref: http://qiita.com/kujirahand/items/5a327970e0d0b60be14a

exec-rhino

on main(input)
    -- スクリプトの名前
    set mainScript to "test.sh"
    -- 親ディレクトリの取得
    tell application "Finder" to set parentDirPos to parent of (path to me) as text
    set parentDir to ((alias parentDirPos)'s POSIX path)
    try
        do shell script "cd " & parentDir & ";./" & mainScript & space & input
    end try
end main

on open argv
    repeat with aFile in argv
        main(quoted form of POSIX path of aFile)
    end repeat
end open

on run
    -- ファイル選択を行う場合
    -- main(quoted form of POSIX path of (choose file))
    -- 引数をつけない場合
    main({})
end run

test.sh

#!/usr/bin/java -Dfile.encoding=UTF-8 -cp ./js.jar org.mozilla.javascript.tools.shell.Main

//
// ここに Rhino/JavaScriptのコードを記述
//