lyrics fetcher: add support for genius.com

NEWS

@@ -4,6 +4,7 @@ ncmpcpp-0.8 (????-??-??)
 * Support for filtering of lists was brought back from the dead.
 * Require C++14 compatible compiler during compilation.
 * Lyrics from files containing DOS line endings now load properly on Linux.
+* Added support for fetching lyrics from genius.com.
 
 ncmpcpp-0.7.7 (2016-10-31)
 * Fixed compilation on 32bit platforms.

src/lyrics_fetcher.cpp

@@ -39,6 +39,7 @@
 LyricsFetcher *lyricsPlugins[] =
 {
 	new LyricwikiFetcher(),
+	new GeniusLyricsFetcher(),
 	new AzLyricsFetcher(),
 	new Sing365Fetcher(),
 	new LyricsmaniaFetcher(),

src/lyrics_fetcher.h

@@ -116,6 +116,14 @@ protected:
 	virtual const char *regex() const override { return "<div class=\"lyricsh\">.*?</h2>.*<div>(.*?)</div>"; }
 };
 
+struct GeniusLyricsFetcher : public GoogleLyricsFetcher
+{
+	virtual const char *name() const override { return "genius.com"; }
+
+protected:
+	virtual const char *regex() const override { return "<lyrics.*?>(.*?)</lyrics>"; }
+};
+
 struct InternetLyricsFetcher : public GoogleLyricsFetcher
 {
 	virtual const char *name() const override { return "the Internet"; }