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/*
* Jitsi, 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 net.java.sip.communicator.service.replacement.*;
import net.java.sip.communicator.util.*;
import org.json.*;
/**
* 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 =
"(?<=>)(https?\\:\\/\\/(www\\.)*?flickr\\.com"
+ "\\/photos\\/[0-9a-zA-Z_\\-\\@]+\\/([0-9]+)(\\/[^\"\\<]*)*)(?=</A>)";
/**
* API Key required to access the Flickr api.
*/
public static final String API_KEY = "8b5d9cee22f0f5154bf4e9846c025484";
/**
* Configuration label shown in the config form.
*/
public static final String FLICKR_CONFIG_LABEL = "Flickr Images";
/**
* Source name; also used as property label.
*/
public static final String SOURCE_NAME = "FLICKR";
/**
* Constructor for <tt>ReplacementServiceFlickrImpl</tt>.
*/
public ReplacementServiceFlickrImpl()
{
logger.trace("Creating a Flickr Source.");
}
/**
* Replaces the Flickr image links with their corresponding thumbnails.
*
* @param sourceString the original flickr image link.
* @return replaced thumbnail image link; the original image link in case of
* no match.
*/
public String getReplacement(String sourceString)
{
final Pattern p =
Pattern.compile(
"\\/photos\\/[0-9a-zA-Z_\\-\\@]+\\/([0-9]+)(\\/[^\"\\<]*)*",
Pattern.CASE_INSENSITIVE | Pattern.DOTALL);
Matcher m = p.matcher(sourceString);
String thumbUrl = sourceString;
while (m.find())
{
try
{
// API URL
String url =
"http://api.flickr.com/services/rest/"
+ "?method=flickr.photos.getInfo&api_key="
+ API_KEY + "&photo_id=" + m.group(1)
+ "&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");
if (!(result.length() == 0))
{
String farmID = result.getString("farm");
String serverID = result.getString("server");
String secret = result.getString("secret");
thumbUrl =
"http://farm" + farmID + ".static.flickr.com/"
+ serverID + "/" + m.group(1) + "_" + secret
+ "_t.jpg";
}
}
}
catch(Exception e)
{
e.printStackTrace();
}
}
return thumbUrl;
}
/**
* Returns the source name
*
* @return the source name
*/
public String getSourceName()
{
return SOURCE_NAME;
}
/**
* Returns the pattern of the source
*
* @return the source pattern
*/
public String getPattern()
{
return FLICKR_PATTERN;
}
}
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