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PubNub is a cross-platform client-to-client (1:1 and 1:many) push service in the cloud, capable of broadcasting real-time messages to millions of web and mobile clients simultaneously, in less than a quarter second!

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package com.pubnub.api;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.util.Locale;


/**
 * PubnubUtil class provides utility methods like urlEncode etc
 *
 * @author Pubnub
 *
 */
public class PubnubUtil extends PubnubUtilCore {


    public static String stringEscapeSlashes(String s, String a, String b) {
        return s.replace(a, b);
    }
    public static String stringReplaceAll(String s, String a, String b) {
        return s.replaceAll(a, b);
    }
    /**
     * Returns encoded String
     *
     * @param sUrl
     *            , input string
     * @return , encoded string
     */
    public static String pamEncode(String sUrl) {
        /* !'()*~ */

        String encoded = urlEncode(sUrl);
        if (encoded != null) {
            encoded = encoded.replace("*", "%2A").replace("!", "%21").replace("'", "%27").replace("(", "%28")
                    .replace(")", "%29").replace("[", "%5B").replace("]", "%5D").replace("~", "%7E");
        }
        return encoded;

    }

    /**
     * Returns encoded String
     *
     * @param sUrl
     *            , input string
     * @return , encoded string
     */
    public static String urlEncode(String sUrl) {
        try {
            return URLEncoder.encode(sUrl, "UTF-8").replace("+", "%20");
        } catch (UnsupportedEncodingException e) {
            return null;
        }
    }

    /**
     * Convert input String to JSONObject, JSONArray, or String
     *
     * @param str
     *            JSON data in string format
     *
     * @return JSONArray or JSONObject or String
     */
    static Object stringToJSON(String str) {
        try {
            return new JSONArray(str);
        } catch (JSONException e) {
        }
        try {
            return new JSONObject(str);
        } catch (JSONException ex) {
        }
        try {
            return Integer.parseInt(str);
        } catch (Exception ex) {
        }
        try {
            return Double.parseDouble(str);
        } catch (Exception ex) {
        }
        return str;
    }

    /**
     * Takes source and delimiter string as inputs and returns splitted string
     * in form of tokens in String array
     *
     * @param source
     *            , input String
     * @param delimiter
     *            , delimiter to split on
     * @return String[] , tokens in and array
     */

    public static String[] splitString(String source, String delimiter) {
        return source.split(delimiter);
    }

}