JsonParser.java

/*
 Swisscom Safe Connect
 Copyright (C) 2014 Swisscom

 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.

 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, see <http://www.gnu.org/licenses/>.
*/
package com.swisscom.safeconnect.json;

import android.util.Log;

import com.swisscom.safeconnect.BuildConfig;
import com.swisscom.safeconnect.utils.Config;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.List;

public abstract class JsonParser<T> {
	public static String toJsonString(InputStream is) {
		// read the json
		InputStreamReader isr = new InputStreamReader(is);
		BufferedReader br = new BufferedReader(isr);

		String line = "";
		StringBuilder sb = new StringBuilder();

		try {
			while ((line = br.readLine()) != null) {
				sb.append(line).append("\n");
			}
		} catch (IOException e) {
            if (BuildConfig.DEBUG) Log.e(Config.TAG, "error", e);
		}
        finally {
            try {
                if (br != null) {
                    br.close();
                }
                if (isr != null) {
                    isr.close();
                }
                if (is != null) {
                    is.close();
                }
            } catch (IOException e) {
                if (BuildConfig.DEBUG) Log.e(Config.TAG, "error", e);
            }
        }

		return sb.toString();
	}
	
	protected abstract void parseJson(String jsonString);
	public abstract List<T> getListResult();
	public abstract T getResult();
}