de.onyxbits.raccoon.cli.Router.java Source code

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Here is the source code for de.onyxbits.raccoon.cli.Router.java

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/*
 * Copyright 2016 Patrick Ahlbrecht
 *
 * 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 de.onyxbits.raccoon.cli;

import java.io.File;
import java.text.MessageFormat;

import org.apache.commons.cli.CommandLine;
import org.apache.commons.cli.DefaultParser;
import org.apache.commons.cli.HelpFormatter;
import org.apache.commons.cli.Option;
import org.apache.commons.cli.Options;
import org.apache.commons.cli.ParseException;

import de.onyxbits.weave.util.Version;

/**
 * Core class of the package. Knows how to parse the command line arguments and
 * route them to the desired functions.
 * 
 * @author patrick
 * 
 */
public class Router {

    /**
     * Print an error message and exit
     * 
     * @param reason
     *          property (minus the "fail." prefix) that contains the error
     *          message.
     * @param args
     *          format option.
     */
    public static void fail(String reason, Object... args) {
        System.err.println(MessageFormat.format(Messages.getString("fail." + reason), args));
        System.exit(1);
    }

    private static final String DESC = "description.";

    public static void main(String[] args) {
        Options options = new Options();

        Option property = Option.builder("D").argName("property=value").numberOfArgs(2).valueSeparator()
                .desc(Messages.getString(DESC + "D")).build();
        options.addOption(property);

        Option help = new Option("h", "help", false, Messages.getString(DESC + "h"));
        options.addOption(help);

        Option version = new Option("v", "version", false, Messages.getString(DESC + "v"));
        options.addOption(version);

        // GPA: Google Play Apps (we might add different markets later)
        Option playAppDetails = new Option(null, "gpa-details", true, Messages.getString(DESC + "gpa-details"));
        playAppDetails.setArgName("package");
        options.addOption(playAppDetails);

        Option playAppBulkDetails = new Option(null, "gpa-bulkdetails", true,
                Messages.getString(DESC + "gpa-bulkdetails"));
        playAppBulkDetails.setArgName("file");
        options.addOption(playAppBulkDetails);

        Option playAppBatchDetails = new Option(null, "gpa-batchdetails", true,
                Messages.getString(DESC + "gpa-batchdetails"));
        playAppBatchDetails.setArgName("file");
        options.addOption(playAppBatchDetails);

        Option playAppSearch = new Option(null, "gpa-search", true, Messages.getString(DESC + "gpa-search"));
        playAppSearch.setArgName("query");
        options.addOption(playAppSearch);

        CommandLine commandLine = null;
        try {
            commandLine = new DefaultParser().parse(options, args);
        } catch (ParseException e) {
            System.err.println(e.getMessage());
            System.exit(1);
        }

        if (commandLine.hasOption(property.getOpt())) {
            System.getProperties().putAll(commandLine.getOptionProperties(property.getOpt()));
        }

        if (commandLine.hasOption(help.getOpt())) {
            new HelpFormatter().printHelp("raccoon", Messages.getString("header"), options,
                    Messages.getString("footer"), true);
            System.exit(0);
        }

        if (commandLine.hasOption(version.getOpt())) {
            System.out.println(GlobalsProvider.getGlobals().get(Version.class));
            System.exit(0);
        }

        if (commandLine.hasOption(playAppDetails.getLongOpt())) {
            Play.details(commandLine.getOptionValue(playAppDetails.getLongOpt()));
            System.exit(0);
        }

        if (commandLine.hasOption(playAppBulkDetails.getLongOpt())) {
            Play.bulkDetails(new File(commandLine.getOptionValue(playAppBulkDetails.getLongOpt())));
            System.exit(0);
        }

        if (commandLine.hasOption(playAppBatchDetails.getLongOpt())) {
            Play.details(new File(commandLine.getOptionValue(playAppBatchDetails.getLongOpt())));
            System.exit(0);
        }

        if (commandLine.hasOption(playAppSearch.getLongOpt())) {
            Play.search(commandLine.getOptionValue(playAppSearch.getLongOpt()));
            System.exit(0);
        }
    }
}