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Diffstat (limited to 'src/net/java/sip/communicator/impl/replacement/youtube/ReplacementServiceYoutubeImpl.java')
| -rw-r--r-- | src/net/java/sip/communicator/impl/replacement/youtube/ReplacementServiceYoutubeImpl.java | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/src/net/java/sip/communicator/impl/replacement/youtube/ReplacementServiceYoutubeImpl.java b/src/net/java/sip/communicator/impl/replacement/youtube/ReplacementServiceYoutubeImpl.java new file mode 100644 index 0000000..45c8c2e --- /dev/null +++ b/src/net/java/sip/communicator/impl/replacement/youtube/ReplacementServiceYoutubeImpl.java @@ -0,0 +1,139 @@ +/* + * 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.youtube; + +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 Youtube + * links. + * + * @author Purvesh Sahoo + */ +public class ReplacementServiceYoutubeImpl + implements ReplacementService +{ + /** + * The logger for this class. + */ + private static final Logger logger = + Logger.getLogger(ReplacementServiceYoutubeImpl.class); + + /** + * The regex used to match the link in the message. + */ + public static String re1 = + "(http.*?(www\\.)*?youtube\\.com\\/watch\\?v=([a-zA-Z0-9_\\-]+))([?&]\\w+=[\\w-]+)*"; + + /** + * Configuration label property name. The label is saved in the languages + * file under this property. + */ + public static final String YOUTUBE_CONFIG_LABEL = "YOUTUBE"; + + /** + * Constructor for <tt>ReplacementServiceYoutubeImpl</tt>. The source needs + * to register itself with {@link ReplacementService} sourceList to be + * displayed in the configuration panel. + */ + public ReplacementServiceYoutubeImpl() + { + sourceList.add(YOUTUBE_CONFIG_LABEL); + logger.trace("Creating a Youtube Source."); + } + + /** + * Replaces the youtube 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(final String chatString) + { + final Pattern p = + Pattern.compile(re1, 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(); + + // We only want to replace the inner link text and not the link src. + // All even matches are the text we want to replace. + if (count % 2 == 0) + { + try + { + String url = + "http://youtube.com/oembed/?url=" + m.group(0); + + 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(); + } + } + else + { + msgBuff.append(chatString.substring(m.start(), m.end())); + } + } + + msgBuff.append(chatString.substring(startPos)); + + if (!msgBuff.toString().equals(chatString)) + return msgBuff.toString(); + + return chatString; + } +}
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