com.viae.maven.sonar.utils.JsonUtil Maven / Gradle / Ivy

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/*
 * Copyright (c) 2016 by VIAE (http///viae-it.com)
 */

package com.viae.maven.sonar.utils;

import com.viae.maven.sonar.exceptions.SonarQualityException;
import org.apache.commons.lang3.StringUtils;
import org.apache.maven.plugin.logging.Log;
import org.json.simple.JSONArray;
import org.json.simple.JSONObject;
import org.json.simple.parser.JSONParser;
import org.json.simple.parser.ParseException;

/**
 * Created by Vandeperre Maarten on 03/05/2016.
 */
public class JsonUtil {
	private static final JSONParser jsonParser = new JSONParser();

	private JsonUtil() {
	}

	public static final String getIdOnMainLevel( final Log logger, final String jsonString ) throws SonarQualityException {
		String id = null;
		if ( StringUtils.isNotBlank( jsonString ) ) {
			final JSONObject json = parse( logger, jsonString );
			if ( json.containsKey( "id" ) ) {
				id = json.get( "id" ).toString();
			}
		}
		return id;
	}

	public static final String getOnMainLevel( final Log logger, final String jsonString, final String fieldName ) throws SonarQualityException {
		String id = null;
		if ( StringUtils.isNotBlank( jsonString ) ) {
			final JSONObject json = parse( logger, jsonString );
			if ( json.containsKey( fieldName ) ) {
				id = json.get( fieldName ).toString();
			}
		}
		return id;
	}

	public static JSONObject parse( final Log logger, final String json ) throws SonarQualityException {
		try {
			JSONObject result = new JSONObject();
			logger.debug( String.format( "parse json:\n" + json ) );
			final Object jsonObject = jsonParser.parse( json );
			if ( jsonObject instanceof JSONObject ) {
				result = (JSONObject) jsonObject;
			}
			else if ( ( (JSONArray) jsonObject ).size() > 0 ) {
				result = (JSONObject) ( (JSONArray) jsonObject ).get( 0 );
			}
			return result;
		}
		catch ( final ParseException e ) {
			throw new SonarQualityException( String.format( "could not parse json \n%s\nCause: %s", json, e.toString() ) );
		}
	}

	public static JSONArray parseArray( final String json ) throws SonarQualityException {
		try {
			JSONArray result = new JSONArray();
			if ( StringUtils.isNotBlank( json ) ) {
				final Object jsonObject = jsonParser.parse( json );
				if ( jsonObject instanceof JSONArray ) {
					result = (JSONArray) jsonObject;
				}
				else {
					result.add( jsonObject );
				}
			}
			return result;
		}
		catch ( final ParseException e ) {
			throw new SonarQualityException( String.format( "could not parse json \n%s\nCause: %s", json, e.toString() ) );
		}
	}
}