fr.smartcontext.yatte.context.cli.CLIBasedContextInitializer.java Source code

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Here is the source code for fr.smartcontext.yatte.context.cli.CLIBasedContextInitializer.java

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/*******************************************************************************
 * Copyright (c) 2015 Goulwen Le Fur.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *******************************************************************************/
package fr.smartcontext.yatte.context.cli;

import java.io.File;
import java.io.FileOutputStream;
import java.nio.file.Paths;
import java.util.List;

import org.apache.commons.cli.BasicParser;
import org.apache.commons.cli.CommandLine;
import org.apache.commons.cli.CommandLineParser;
import org.apache.commons.cli.Options;
import org.apache.commons.cli.ParseException;

import fr.smartcontext.yatte.engine.context.ContextInitializer;
import fr.smartcontext.yatte.engine.context.ProcessingContext;
import fr.smartcontext.yatte.engine.context.ProcessingContextImpl;

/**
 * @author <a href="goulwen.lefur@gmail.com">Goulwen Le Fur</a>
 *
 */
public class CLIBasedContextInitializer implements ContextInitializer {

    private CLIOptionsProvider optionsProvider;

    /**
     * 
     */
    public CLIBasedContextInitializer() {
        optionsProvider = null;
    }

    /**
     * @param optionsProvider the optionsProvider to set
     */
    public void setOptionsProvider(CLIOptionsProvider optionsProvider) {
        this.optionsProvider = optionsProvider;
    }

    /** 
     * {@inheritDoc}
     * @see fr.smartcontext.yatte.engine.context.ContextInitializer#initContext(java.util.List)
     */
    @Override
    public ProcessingContext initContext(List<String> parameters) throws Exception {
        ProcessingContextImpl processingContext = new ProcessingContextImpl();
        Options options = getOptions();
        CommandLine cmdLine = getCmdLine(parameters, options);
        processingContext.setTemplatePath(
                Paths.get(cmdLine.getOptionValue(ApplicationParametersConstants.TEMPLATE_OPTION_NAME)));
        processingContext.setOutput(new FileOutputStream(
                new File(cmdLine.getOptionValue(ApplicationParametersConstants.OUTPUT_OPTION_NAME))));
        return processingContext;
    }

    /**
     * @param bundleContext
     * @return
     */
    protected final Options getOptions() {
        if (optionsProvider == null) {
            optionsProvider = new DefaultOptionsProvider();
        }

        Options options = optionsProvider.getOptions();
        return options;
    }

    /**
     * @param parameters
     * @param options
     * @return
     * @throws ParseException
     */
    protected CommandLine getCmdLine(List<String> parameters, Options options) throws ParseException {
        String[] arguments = parameters.toArray(new String[] {});
        CommandLineParser parser = new BasicParser();
        CommandLine cmdLine = parser.parse(options, arguments);
        return cmdLine;
    }

}