new feature: shorten units' names displayed in statusbar while being in playlist

doc/config

@@ -226,6 +226,8 @@
 #
 #playlist_show_remaining_time = "no"
 #
+#playlist_shorten_total_times = "no"
+#
 #playlist_separate_albums = "no"
 #
 #playlist_display_mode = "classic" (classic/columns)

doc/ncmpcpp.1

@@ -171,6 +171,9 @@ Number of default mode used in search engine.
 .B playlist_show_remaining_time = yes/no
 If enabled, time remaining to end of playlist will be shown after playlist's statistics.
 .TP 
+.B playlist_shorten_total_times = yes/no
+If enabled, total/remaining playlist time displayed in statusbar will be shown using shortened units' names (d:h:m:s instead of days:hours:minutes:seconds).
+.TP 
 .B playlist_separate_albums = yes/no
 If enabled, separators will be placed between albums in playlist.
 .TP 

src/playlist.cpp

@@ -387,12 +387,12 @@ std::string Playlist::TotalLength()
 	if (itsTotalLength)
 	{
 		result << ", length: ";
-		ShowTime(result, itsTotalLength, 0);
+		ShowTime(result, itsTotalLength, Config.playlist_shorten_total_times);
 	}
 	if (Config.playlist_show_remaining_time && itsRemainingTime && !Items->isFiltered() && Items->Size() > 1)
 	{
 		result << " :: remaining: ";
-		ShowTime(result, itsRemainingTime, 0);
+		ShowTime(result, itsRemainingTime, Config.playlist_shorten_total_times);
 	}
 	result << ')';
 	return result.str();

src/settings.cpp

@@ -356,6 +356,7 @@ void NcmpcppConfig::SetDefaults()
 	colors_enabled = true;
 	fancy_scrolling = true;
 	playlist_show_remaining_time = false;
+	playlist_shorten_total_times = false;
 	playlist_separate_albums = false;
 	columns_in_playlist = false;
 	columns_in_browser = false;
@@ -833,6 +834,10 @@ void NcmpcppConfig::Read()
 			{
 				playlist_show_remaining_time = v == "yes";
 			}
+			else if (cl.find("playlist_shorten_total_times") != std::string::npos)
+			{
+				playlist_shorten_total_times = v == "yes";
+			}
 			else if (cl.find("playlist_separate_albums") != std::string::npos)
 			{
 				playlist_separate_albums = v == "yes";

src/settings.h

@@ -196,6 +196,7 @@ struct NcmpcppConfig
 	bool colors_enabled;
 	bool fancy_scrolling;
 	bool playlist_show_remaining_time;
+	bool playlist_shorten_total_times;
 	bool playlist_separate_albums;
 	bool columns_in_playlist;
 	bool columns_in_browser;