src/main/java/org/apache/sling/scripting/sightly/js/impl/Utils.java

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 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
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package org.apache.sling.scripting.sightly.js.impl;

import java.util.Collections;

import javax.script.Bindings;
import javax.script.SimpleBindings;

import org.apache.commons.lang3.StringUtils;
import org.apache.sling.api.scripting.SlingBindings;
import org.apache.sling.api.scripting.SlingScriptHelper;

/**
 * Utilities for script evaluation
 */
public class Utils {
    public static final String JS_EXTENSION = "js";

    public static final Bindings EMPTY_BINDINGS = new SimpleBindings(Collections.<String, Object>emptyMap());

    public static SlingScriptHelper getHelper(Bindings bindings) {
        return (SlingScriptHelper) bindings.get(SlingBindings.SLING);
    }

    public static boolean isJsScript(String identifier) {
        String extension = StringUtils.substringAfterLast(identifier, ".");
        return JS_EXTENSION.equalsIgnoreCase(extension);
    }
}