add playlist renaming support

src/mpdpp.cpp

@@ -302,6 +302,15 @@ void MPDConnection::Move(const string &path, int from, int to) const
 	}
 }
 
+void MPDConnection::Rename(const string &from, const string &to) const
+{
+	if (isConnected)
+	{
+		mpd_sendRenameCommand(itsConnection, from.c_str(), to.c_str());
+		mpd_finishCommand(itsConnection);
+	}
+}
+
 void MPDConnection::GetPlaylistChanges(long long id, SongList &v) const
 {
 	if (isConnected)

src/mpdpp.h

@@ -150,6 +150,7 @@ class MPDConnection
 		void AddToPlaylist(const string &, const Song &) const;
 		void AddToPlaylist(const string &, const string &) const;
 		void Move(const string &, int, int) const;
+		void Rename(const string &, const string &) const;
 		
 		void StartSearch(bool) const;
 		void StartFieldSearch(mpd_TagItems);

src/ncmpcpp.cpp

@@ -57,10 +57,10 @@
 
 #ifdef HAVE_TAGLIB_H
  const string tag_screen = "Tag editor";
- const string tag_screen_keydesc = "Edit song's tags\n";
+ const string tag_screen_keydesc = "Edit song's tags/playlist's name\n";
 #else
  const string tag_screen = "Tag info";
- const string tag_screen_keydesc = "Show song's tags\n";
+ const string tag_screen_keydesc = "Show song's tags/edit playlist's name\n";
 #endif
 
 ncmpcpp_config Config;
@@ -1977,6 +1977,19 @@ int main(int argc, char *argv[])
 				else
 					ShowMessage("Cannot read file!");
 			}
+			else if (wCurrent == mPlaylistList)
+			{
+				LOCK_STATUSBAR;
+				wFooter->WriteXY(0, Config.statusbar_visibility, "[.b]Playlist:[/b] ", 1);
+				string new_name = wFooter->GetString(mPlaylistList->GetOption());
+				UNLOCK_STATUSBAR;
+				if (!new_name.empty() && new_name != mPlaylistList->GetOption())
+				{
+					Mpd->Rename(mPlaylistList->GetOption(), new_name);
+					ShowMessage("Playlist '" + mPlaylistList->GetOption() + "' renamed to '" + new_name + "'");
+					mPlaylistList->Clear(0);
+				}
+			}
 		}
 		else if (Keypressed(input, Key.GoToContainingDir))
 		{