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/*
* SIP Communicator, the OpenSource Java VoIP and Instant Messaging client.
*
* Distributable under LGPL license. See terms of license at gnu.org.
*/
package net.java.sip.communicator.impl.replacement.flickr;
import java.io.*;
import java.net.*;
import java.util.regex.*;
import org.json.*;
import net.java.sip.communicator.service.replacement.*;
import net.java.sip.communicator.util.*;
/**
* Implements the {@link ReplacementService} to provide previews for Flickr
* links.
*
* @author Purvesh Sahoo
*/
public class ReplacementServiceFlickrImpl
implements ReplacementService
{
/**
* The logger for this class.
*/
private static final Logger logger =
Logger.getLogger(ReplacementServiceFlickrImpl.class);
/**
* The regex used to match the link in the message.
*/
public static final String FLICKR_PATTERN =
"(http.*?(www\\.)*?flickr\\.com\\/photos\\/[0-9a-zA-Z_\\-\\@]+\\/([0-9]+)(\\/[^\"\\<]*)*)";
/**
* API Key required to access the Flickr api.
*/
public static final String API_KEY = "8b5d9cee22f0f5154bf4e9846c025484";
/**
* Configuration label property name. The label is saved in the languages
* file under this property.
*/
public static final String FLICKR_CONFIG_LABEL = "FLICKR";
/**
* Constructor for <tt>ReplacementServiceFlickrImpl</tt>. The source needs
* to add itself to {@link ReplacementService} sourceList to be displayed in
* the configuration panel.
*/
public ReplacementServiceFlickrImpl()
{
sourceList.add(FLICKR_CONFIG_LABEL);
logger.trace("Creating a Flickr Source.");
}
/**
* Replaces the Flickr image links in the chat message with their
* corresponding thumbnails.
*
* @param chatString the original chat message.
* @return replaced chat message with the thumbnail image; the original
* message in case of no match.
*/
public String getReplacedMessage(String chatString)
{
final Pattern p =
Pattern.compile(FLICKR_PATTERN, Pattern.CASE_INSENSITIVE
| Pattern.DOTALL);
Matcher m = p.matcher(chatString);
int count = 0, startPos = 0;
StringBuffer msgBuff = new StringBuffer();
while (m.find())
{
count++;
msgBuff.append(chatString.substring(startPos, m.start()));
startPos = m.end();
if (count % 2 == 0)
{
try
{
// API URL
String url =
"http://api.flickr.com/services/rest/?method=flickr.photos.getInfo&api_key="
+ API_KEY + "&photo_id=" + m.group(3)
+ "&format=json&nojsoncallback=1";
URL flickrURL = new URL(url);
URLConnection conn = flickrURL.openConnection();
BufferedReader in =
new BufferedReader(new InputStreamReader(conn
.getInputStream()));
String inputLine, holder = "";
while ((inputLine = in.readLine()) != null)
holder = inputLine;
in.close();
JSONObject wrapper = new JSONObject(holder);
if (wrapper.getString("stat").equals("ok"))
{
JSONObject result = wrapper.getJSONObject("photo");
String farmID = result.getString("farm");
String serverID = result.getString("server");
String secret = result.getString("secret");
String thumbURL =
"http://farm" + farmID + ".static.flickr.com/"
+ serverID + "/" + m.group(3) + "_" + secret
+ "_t.jpg";
if (!(result.length() == 0))
{
msgBuff
.append("<IMG HEIGHT=\"90\" WIDTH=\"120\" SRC=\"");
msgBuff.append(thumbURL);
msgBuff.append("\"></IMG>");
}
}
else
{
startPos = 0;
msgBuff = new StringBuffer();
}
}
catch (Exception e)
{
startPos = 0;
msgBuff = new StringBuffer();
e.printStackTrace();
}
}
else
{
msgBuff.append(chatString.substring(m.start(), m.end()));
}
}
msgBuff.append(chatString.substring(startPos));
if (!msgBuff.toString().equals(chatString))
return msgBuff.toString();
return chatString;
}
}
|
