Used to compress URL using the bit.ly service. : Url « Network « Android

1. Android
2. Network
3. Url

Used to compress URL using the bit.ly service.

 
//package com.dreamcode.anfeedreader.utils;

/*
Copyright 2010 Finn J Johnsen. All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are
permitted provided that the following conditions are met:

   1. Redistributions of source code must retain the above copyright notice, this list of
      conditions and the following disclaimer.

   2. Redistributions in binary form must reproduce the above copyright notice, this list
      of conditions and the following disclaimer in the documentation and/or other materials
      provided with the distribution.

THIS SOFTWARE IS PROVIDED BY JOHNSEN ``AS IS'' AND ANY EXPRESS OR IMPLIED
WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JOHNSEN OR
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

The views and conclusions contained in the software and documentation are those of the
authors and should not be interpreted as representing official policies, either expressed
or implied, of Johnsen.
*/
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.URLEncoder;

import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.json.JSONException;
import org.json.JSONObject;

/**
 * Used to compress URL using the bit.ly service. 
 * 
 * <CODE>
 * BitlyAndroid bitly = new BitlyAndroid("bitlyapidemo", "R_0da49e0a9118ff35f52f629d2d71bf07");
 * String shortUrl = bitly.getShortUrl("http://johnsenf.blogspot.com/2009/12/android-sources-and-javadoc-in-eclipse.html");
 * </CODE>
 * 
 * Throws Exception. You can try catch it and check <code>bitly.lastResponse</code> for message from bit.ly.
 * 
 */
public class BitlyAndroid {
  /** Change this if you want to use j.mp instead. */
  public static BitlyService service = BitlyService.BITLY;

  private final String bitlyAuth;

  private HttpClient httpclient = null;

  /** Last response kept in case user gets exception and wants to see the response from bit.ly. */
  private BitlyReply lastResponse = null;

  public BitlyAndroid(String login, String apiKey) {
    bitlyAuth = "&format=json&login=" + login + "&apiKey=" + apiKey;
    httpclient = new DefaultHttpClient();
  }

  public String getShortUrl(String urlToShorten) throws Exception {
    BitlyReply reply = null;
    String httpResponse = null;
    httpResponse = getBitlyHttpResponseText(urlToShorten);
    reply = new BitlyReply(urlToShorten, httpResponse);
    lastResponse = reply;
    return reply.getShortUrl();
  }

  BitlyReply getBitlyReply(String urlToShorten) throws JSONException, IOException {
    String httpResponse = getBitlyHttpResponseText(urlToShorten);
    return new BitlyReply(urlToShorten, httpResponse);
  }

  private String getBitlyHttpResponseText(String urlToShorten) throws IOException {
    String uri = getBitlyUrl() + URLEncoder.encode(urlToShorten) + bitlyAuth;
    HttpGet httpGet = new HttpGet(uri);
    HttpResponse response = httpclient.execute(httpGet);
    String json = getText(response);
    return json;
  }

  private String getText(HttpResponse response) throws IOException {
    InputStream is = response.getEntity().getContent();
    BufferedReader reader = new BufferedReader(new InputStreamReader(is));
    StringBuilder sb = new StringBuilder();
    String line = null;
    while ((line = reader.readLine()) != null) {
      sb.append(line);
    }
    return sb.toString();
  }

  public BitlyReply getLastResponseFromBitLy() {
    return lastResponse;
  }

  private String getBitlyUrl() {
    return "http://api." + BitlyAndroid.service + "/shorten?version=2.0.1&longUrl=";
  }

  /** Represents a response from bit.ly. Mimics the structure of the JSON data. */
  public class BitlyReply {
    public String longUrl = "";

    public Integer errorCode;
    public String errorMessage;
    public String statusCode;
    public BitlyResult result;

    public BitlyReply(String longUrl, String jsonText) throws JSONException {
      this.longUrl = longUrl;
      JSONObject bitlyMessage = new JSONObject(jsonText);
      this.errorCode = bitlyMessage.getInt("errorCode");
      this.errorMessage = bitlyMessage.getString("errorMessage");
      this.statusCode = bitlyMessage.getString("statusCode");

      JSONObject results = bitlyMessage.getJSONObject("results");
      JSONObject urlResult = results.getJSONObject(longUrl);
      result = new BitlyResult(urlResult.getString("hash"), //
          urlResult.getString("shortCNAMEUrl"), //
          urlResult.getString("shortKeywordUrl"), //
          urlResult.getString("shortUrl"), //
          urlResult.getString("userHash"));//
    }

    public String getShortUrl() {
      return result.shortUrl;
    }

  }

  /** Result -object which contains the shortUrl. */
  public class BitlyResult {
    public String hash;
    public String shortCNAMEUrl;
    public String shortKeywordUrl;
    public String shortUrl;
    public String userHash;

    public BitlyResult(String hash, String shortCNAMEUrl, String shortKeywordUrl, String shortUrl, String userHash) {
      super();
      this.hash = hash;
      this.shortCNAMEUrl = shortCNAMEUrl;
      this.shortKeywordUrl = shortKeywordUrl;
      this.shortUrl = shortUrl;
      this.userHash = userHash;
    }
  }

  public enum BitlyService {
    BITLY {
      @Override
      public String toString() {
        return "bit.ly";
      }
    },
    JMP {
      @Override
      public String toString() {
        return "j.mp";
      }
    }
  }
  /*
   * Sample response from bit.ly
   * 
   * <{"errorCode": 0,     
   * "errorMessage": "",     
   * "results": { "http://johnsenf.blogspot.com/2010/01/android-app-published-1-week-ago.html": 
   *         { "hash": "7oa3Mf",  
   *         "shortCNAMEUrl": "http://bit.ly/dBdV3d", 
   *         "shortKeywordUrl": "", 
   *         "shortUrl": "http://bit.ly/dBdV3d",
   *         "userHash": "dBdV3d"
   *         }},    
   * "statusCode": "OK"}>
   */
}

   
  

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