/*
* 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.viddler;
import java.io.*;
import java.net.*;
import java.util.regex.*;
import net.java.sip.communicator.service.replacement.*;
import net.java.sip.communicator.util.*;
/**
* Implements the {@link ReplacementService} to provide previews for Viddler
* links.
*
* @author Purvesh Sahoo
*/
public class ReplacementServiceViddlerImpl
implements ReplacementService
{
/**
* The logger for this class.
*/
private static final Logger logger =
Logger.getLogger(ReplacementServiceViddlerImpl.class);
/**
* The regex used to match the link in the message.
*/
public static final String VIDDLER_PATTERN =
"(?:[\\>])(http:\\/\\/(?:www\\.)?viddler\\.com\\/explore\\/(\\w+)\\/videos\\/\\d+.*(?=<\\/A>))";
/**
* API Key required to access the viddler api.
*/
private static final String API_KEY = "1bi6ckuzmklyaqseiqtl";
/**
* Viddler API url.
*/
private static final String sourceURL =
"http://api.viddler.com/rest/v1/?method=viddler.videos.getDetailsByUrl&api_key="
+ API_KEY;
/**
* Configuration label property name. The label is saved in the languages
* file under this property.
*/
public static final String VIDDLER_CONFIG_LABEL = "VIDDLER";
/**
* Constructor for ReplacementServiceViddlerImpl. The source needs
* to add itself to {@link ReplacementService} sourceList to be
* displayed in the configuration panel.
*/
public ReplacementServiceViddlerImpl()
{
sourceList.add(VIDDLER_CONFIG_LABEL);
logger.trace("Creating a Viddler Source.");
}
/**
* Replaces the viddler video 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(VIDDLER_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();
try
{
String url = sourceURL + "&url=" + m.group(1) + "/";
URL sourceURL = new URL(url);
URLConnection conn = sourceURL.openConnection();
BufferedReader in =
new BufferedReader(new InputStreamReader(conn
.getInputStream()));
String inputLine;
StringBuffer holder = new StringBuffer();
while ((inputLine = in.readLine()) != null)
holder.append(inputLine);
in.close();
String startTag = "";
String endTag = "";
String response = holder.toString();
int start = response.indexOf(startTag) + startTag.length();
int end = response.toString().indexOf(endTag);
String thumbUrl = response.substring(start, end);
if (thumbUrl != null)
{
msgBuff.append("
");
}
else
{
startPos = 0;
msgBuff = new StringBuffer();
}
}
catch (Exception e)
{
startPos = 0;
msgBuff = new StringBuffer();
e.printStackTrace();
}
}
msgBuff.append(chatString.substring(startPos));
if (!msgBuff.toString().equals(chatString))
return msgBuff.toString();
return chatString;
}
}