Android Open Source - Llama Anu Random

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Back to project page Llama.
License

The source code is released under:
MIT License
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Java Source Code

package io.github.nick11roberts.llamaspawningbuttonthing;
/* www . j a  v a2 s  . co m*/


/**
@author Kristian Lundkvist <kristian.lundkvist@gmail.com>

 Credit goes to author. ^^^
 Some revisions by Nick Roberts.
*/

import java.io.BufferedInputStream;
import java.io.DataInputStream;
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;

/**
A class for downloading and parsing a 1024 bytes of random data from http://150.203.48.55/RawHex.php
*/
public class AnuRandom{

  /**
  DataInputStream using for reading from the website.
  */
  private DataInputStream in;

  /**
  Variable temporary storing the webpage.
  */
  private String page;

  /**
  Stores the bytes as a String variable.
  */
  private String bytes;

  /**
  The number of bytes to download.
  */
  private int numberOfBytes;

  /**
  Standard constructor.
  */
  public AnuRandom(){
    this.in = null;
    this.page = "";
    this.bytes = "";
    this.numberOfBytes = 0;
  }

  /**
  Constructor.
  @param numberOfBytes The number of bytes to download
  */
  public AnuRandom(int numberOfBytes){
    this.numberOfBytes = numberOfBytes*2; //Slightly altered to account for Hex bytes.
    this.in = null;
    this.page = "";
    this.bytes = "";
  }

    public double getQRandomMultiplier(){

        //Gets bytes from server, will exit if server inaccessible

        Integer randHexNum = 0;
        double randMultiplier = 0;
        AnuRandom random = new AnuRandom(1);
        String temp = new String(random.getBytes());
        System.out.println(temp);
        //Gets bytes from server, throws catchable exception if server inaccessible
        try {
            temp = new String(random.getBytesSafe());
        } catch (IOException e) {
            //Handle inaccessible server
        }


        //Convert from base 16 string to int
        randHexNum = Integer.parseInt(temp, 16);
        randMultiplier = (double)((randHexNum/255.0)); // divide by the max hex value to return a value between 0-1.

        return randMultiplier;
    }

  /**
  Set the number of bytes.
  @param numberOfBytes The new number of bytes
  */
  public void setNumberOfBytes(int numberOfBytes){
    this.numberOfBytes = numberOfBytes;
  }

  /**
  Returns the number of bytes.
  @return The number of bytes
  */
  public int getNumberOfBytes(){
    return this.numberOfBytes;
  }

  /**
  Runs to methods to download and parse the webpage.
  Returns the bytes from the webpage.
  Handles exceptions internally by exiting application.
  @return The downloaded bytes
  */
  public byte[] getBytes(){
    try {
      return getBytesSafe();
    } catch(MalformedURLException e){
      e.printStackTrace();
      System.exit(1);
    }
    catch(IOException e){
      e.printStackTrace();
      System.exit(1);
    }
    return null;
  }
  
  /**
  Runs to methods to download and parse the webpage.
  Returns the bytes from the webpage.
  Passes exceptions to be handled externally
  @return The downloaded bytes
  @throws IOException 
  @throws MalformedURLException 
   */
  public byte[] getBytesSafe() throws MalformedURLException, IOException {
    byte[] temp = new byte[this.numberOfBytes];
    String store = "";

    while(store.length() < this.numberOfBytes){
      this.getPage();
      this.parsePage();
      store += this.bytes;
    }
    byte[] storeTemp = store.getBytes();
    for(int i = 0; i < this.numberOfBytes; i++){
      temp[i] = storeTemp[i];
    }

    return temp;
  }

  /**
  Downloads the webpage and stores it in memory.
  @throws MalformedURLException 
  @throws IOException 
  */
  @SuppressWarnings("deprecation")
  public void getPage() throws MalformedURLException, IOException {
    try{
      URL u = new URL("http://150.203.48.55/RawHex.php"); //Changed from RawChar.php to RawHex.php
      this.in = new DataInputStream(new BufferedInputStream(u.openStream()));
      String temp = "";
      while ((temp = this.in.readLine()) != null){
        this.page += temp;
      }
    } finally{
      try{
        if(this.in != null) {
          this.in.close();
        }
      }
      catch(IOException e){
        e.printStackTrace();
      }
    }
  }

  /**
  Parses the random bytes from the webpage.
  */
  public void parsePage(){

    int start;
    int end;

    start = this.page.indexOf("<table class=\"rng\" cellpadding=\"10\"> <tr><td>");
    end = this.page.indexOf("</td></tr></table><br />", start);
    start += 45;

    this.bytes = this.page.substring(start, end);

  }




}
Java Source Code List
