net.grinder.lang.Lang.java Source code

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Here is the source code for net.grinder.lang.Lang.java

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/* 
 * Licensed 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,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License. 
 */
package net.grinder.lang;

import static org.ngrinder.common.util.Preconditions.checkNotNull;

import java.io.File;

import net.grinder.lang.groovy.GroovyHandler;
import net.grinder.lang.jython.JythonHandler;

import org.apache.commons.io.FilenameUtils;

/**
 * Supported Language Enum.
 *
 * @author JunHo Yoon
 * @since 3.2
 */
public enum Lang {
    /**
     * Groovy.
     */
    Groovy(new GroovyHandler()),
    /**
     * Jython.
     */
    Jython(new JythonHandler()),
    /**
     * Unknown.
     */
    Unknown(new UnknownHandler());
    private final AbstractLanguageHandler handler;

    Lang(AbstractLanguageHandler handler) {
        this.handler = checkNotNull(handler);
    }

    /**
     * Get {@link Lang} enum by the given file's name.
     *
     * @param file file
     * @return {@link Lang} enum value
     */
    public static Lang getByFileName(File file) {
        return getByFileName(file.getPath());
    }

    /**
     * Get {@link Lang} enum by the given filename.
     *
     * @param fileName filename
     * @return {@link Lang} enum value
     */
    public static Lang getByFileName(String fileName) {
        String extension = FilenameUtils.getExtension(fileName);
        for (Lang each : values()) {
            if (each.getHandler().getExtension().equals(extension)) {
                return each;
            }
        }
        return Unknown;
    }

    /**
     * Get the language handler.
     *
     * @return language handler.
     */
    public AbstractLanguageHandler getHandler() {
        return handler;
    }

}