lyrics fetcher: remove ad from lyricsvip lyrics

src/lyrics_fetcher.cpp

@@ -261,6 +261,19 @@ void SonglyricsFetcher::postProcess(std::string &data)
 	LyricsFetcher::postProcess(data);
 }
 
+
+/**********************************************************************/
+
+void LyricsvipFetcher::postProcess(std::string &data)
+{
+	// throw away <div> with ad
+	size_t i = data.find("<div class=\"ad\""), j = data.find("</div>");
+	if (i != std::string::npos && i != std::string::npos)
+		data.replace(i, j-i+static_strlen("</div>"), "");
+	data = unescapeHtmlUtf8(data);
+	LyricsFetcher::postProcess(data);
+}
+
 /**********************************************************************/
 
 LyricsFetcher::Result InternetLyricsFetcher::fetch(const std::string &artist, const std::string &title)

src/lyrics_fetcher.h

@@ -168,6 +168,8 @@ struct LyricsvipFetcher : public GoogleLyricsFetcher
 		virtual const char *getSiteKeyword() { return "lyricsvip"; }
 		virtual const char *getOpenTag() { return "</h2>"; }
 		virtual const char *getCloseTag() { return "</td>"; }
+		
+		virtual void postProcess(std::string &data);
 };
 
 struct JustSomeLyricsFetcher : public GoogleLyricsFetcher