/**

  * Back 2 Browser Bytecode Translator

  * Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>

  *

  * 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, version 2 of the License.

  *

  * 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. Look for COPYING file in the top folder.

  * If not, see http://opensource.org/licenses/GPL-2.0.

  */

 package org.apidesign.vm4brwsr;

 import java.io.UnsupportedEncodingException;

 import org.apidesign.bck2brwsr.core.JavaScriptBody;

 /**

  *

  * @author Jaroslav Tulach <jtulach@netbeans.org>

  */

 public class StringSample {

     public static final String HELLO = "Hello World!";

     private static int counter;

     private final int cnt;

     public StringSample() {

         cnt = ++counter;

     }

     public static char sayHello(int indx) {

         return HELLO.charAt(indx);

     }

     public static boolean equalToHello(int from, int to) {

         return "Hello".equals(HELLO.substring(from, to));

     }

     public static String fromChars(char a, char b, char c) {

         char[] arr = { a, b, c };

         return new String(arr).toString();

     }

     public static String charsFromNumbers() {

         return chars((char)65, (char)66, (char)67);

     }

     public static String charsFromChars() {

         return chars('A', 'B', 'C');

     }

     public static String chars(char a, char b, char c) {

         return ("" + a + b +c).toString();

     }

     public static String replace(String s, char a, char b) {

         return s.replace(a, b);

     }

     public static int hashCode(String h) {

         return h.hashCode();

     }

     public static boolean isStringInstance() {

         return chars('a', (char)30, 'b') instanceof String;

     }

     public static String getBytes(String s) throws UnsupportedEncodingException {

         byte[] arr = s.getBytes("UTF-8");

         StringBuilder sb = new StringBuilder();

         for (int i = 0; i < arr.length; i++) {

             sb.append(arr[i]).append(" ");

         }

         return sb.toString().toString();

     }

     public static String unicode() {

         return "\r\n\u2028\u2029]";

     }

     public static String insertBuffer() {

         StringBuilder sb = new StringBuilder();

         sb.append("Jardo!");

         sb.insert(0, "Ahoj ");

         sb.delete(4, 8);

         return sb.toString().toString();

     }

     public static int countAB(String txt) {

         int cnt = 0;

         for (int i = 0; i < txt.length(); i++) {

             switch (txt.charAt(i)) {

                 case 'A': cnt++; break;

                 case 'B': cnt += 2; break;

             }

         }

         return cnt;

     }

     public static int stringSwitch(String txt) {

         switch (txt) {

             case "jedna": return 1;

             case "dve": return 2;

             case "tri": return 3;

             case "ctyri": return 4;

         }

         return -1;

     }

     public static String toStringTest(int howMuch) {

         counter = 0;

         StringSample ss = null;

         for (int i = 0; i < howMuch; i++) {

             ss = new StringSample();

         }

         return ss.toString().toString();

     }

     public static String concatStrings() {

         return (toStringTest(1) + "\\\n\r\t").toString();

     }

     public static int compare(String a, String b) {

         return a.compareTo(b);

     }

     @Override

     public String toString() {

         return HELLO + cnt;

     }

     @JavaScriptBody(args = {}, body = "return [1, 2];")

     private static native Object crtarr();

     @JavaScriptBody(args = { "o" }, body = "return o.toString();")

     private static native String toStrng(Object o);

     public static String toStringArray(boolean fakeArr, boolean toString) {

         final Object arr = fakeArr ? crtarr() : new Object[2];

         final String whole = toString ? arr.toString() : toStrng(arr);

         int zav = whole.indexOf('@');

         if (zav <= 0) {

             zav = whole.length();

         }

         return whole.substring(0, zav).toString().toString();

     }

 }