org.dasd.ee.misc.Util.java Source code

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Here is the source code for org.dasd.ee.misc.Util.java

Source

package org.dasd.ee.misc;

import com.google.gson.Gson;
import com.google.gson.stream.JsonReader;
import org.dasd.ee.tests.TestGroup;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.nio.CharBuffer;
import java.util.Map;
import java.util.Optional;
import java.util.Scanner;
import java.util.stream.Collectors;
import java.util.stream.Stream;

/**
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * <p>
 * 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.
 * <p>
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 * <p>
 * Written By: brandon on 10/17/16
 */
public class Util {

    public static String matchString(String prompt, String... options) {
        System.out.println("Options: " + String.join(", ", options));
        String chosen = null;
        Scanner scanner = new Scanner(System.in);
        while (chosen == null) {
            System.out.print(prompt + ": ");
            String test = scanner.nextLine();
            Optional<String> result = Stream.of(options).filter(x -> x.toLowerCase().equals(test.toLowerCase()))
                    .findFirst();
            if (result.isPresent()) {
                chosen = result.get();
            } else {
                System.out.println("Invalid Input!");
            }
        }
        System.out.println("Chosen: " + chosen + "\n");
        return chosen;
    }

    public static TestGroup loadSettings() {
        Gson gson = new Gson();
        File resources = new File("./resources/");
        if (!resources.exists()) {
            resources.mkdirs();
        }
        Map<String, File> resourceMap = Stream.of(resources.listFiles()).filter(x -> x.getName().contains(".json"))
                .collect(Collectors.toMap(x -> x.getName().substring(0, x.getName().lastIndexOf(".")), x -> x));
        File result = resourceMap
                .get(matchString("Settings File", resourceMap.keySet().toArray(new String[resourceMap.size()])));
        try {
            JsonReader reader = new JsonReader(new ProgressReader("Reading Settings", result));
            return gson.fromJson(reader, TestGroup.class);
        } catch (FileNotFoundException e) {
            return null;
        }
    }
}