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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.bliptv;
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 Blip.tv
* links.
*
* @author Purvesh Sahoo
*/
public class ReplacementServiceBliptvImpl
implements ReplacementService
{
/**
* The logger for this class.
*/
private static final Logger logger =
Logger.getLogger(ReplacementServiceBliptvImpl.class);
/**
* The regex used to match the link in the message.
*/
public static final String BLIPTV_PATTERN =
"(?:[\\>])(http:\\/\\/(?:www\\.)?blip\\.tv\\/file\\/(\\d+).*(?=<))";
/**
* Configuration label shown in the config form.
*/
public static final String BLIPTV_CONFIG_LABEL = "Blip.tv";
/**
* Source name; also used as property label.
*/
public static final String SOURCE_NAME = "BLIPTV";
/**
* Constructor for <tt>ReplacementServiceBliptvImpl</tt>.
*/
public ReplacementServiceBliptvImpl()
{
logger.trace("Creating a Blip.TV Source.");
}
/**
* Replaces the Blip.tv 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(BLIPTV_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 = "http://oohembed.com/oohembed/?url=" + m.group(1);
URL sourceURL = new URL(url);
URLConnection conn = sourceURL.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);
String thumbUrl = wrapper.getString("thumbnail_url");
if (thumbUrl != null)
{
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();
}
}
msgBuff.append(chatString.substring(startPos));
if (!msgBuff.toString().equals(chatString))
return msgBuff.toString();
return chatString;
}
/**
* Returns the source name
*
* @return the source name
*/
public String getSourceName()
{
return SOURCE_NAME;
}
}
|
