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Testing utilities for LensKit.

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/*
 * LensKit, an open source recommender systems toolkit.
 * Copyright 2010-2016 LensKit Contributors.  See CONTRIBUTORS.md.
 * Work on LensKit has been funded by the National Science Foundation under
 * grants IIS 05-34939, 08-08692, 08-12148, and 10-17697.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
 * details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc., 51
 * Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */
package org.lenskit.util.test;

import com.google.common.base.Charsets;
import com.google.common.io.Files;

import javax.script.*;
import java.io.File;
import java.io.IOException;
import java.io.Reader;
import java.util.Arrays;

/**
 * Run a script using the script engine.
 */
public class RunScript {
    public static void main(String[] args) throws IOException, ScriptException {
        File scriptFile = new File(args[0]);
        ScriptEngineManager sem = new ScriptEngineManager();
        String ext = Files.getFileExtension(scriptFile.getName());
        ScriptEngine engine = sem.getEngineByExtension(ext);
        engine.put("cmdArgs", Arrays.asList(args).subList(1, args.length));
        try (Reader reader = Files.newReader(scriptFile, Charsets.UTF_8)) {
            engine.eval(reader);
        }
    }
}