C++ Song::isFromDatabase方法代码示例

std::string Lyrics::GenerateFilename(const MPD::Song &s)
{
	std::string filename;
	if (Config.store_lyrics_in_song_dir)
	{
		if (s.isFromDatabase())
		{
			filename = Config.mpd_music_dir;
			filename += "/";
			filename += s.getURI();
		}
		else
			filename = s.getURI();
		// replace song's extension with .txt
		size_t dot = filename.rfind('.');
		assert(dot != std::string::npos);
		filename.resize(dot);
		filename += ".txt";
	}
	else
	{
		std::string file = s.getArtist();
		file += " - ";
		file += s.getTitle();
		file += ".txt";
		removeInvalidCharsFromFilename(file);
		filename = Config.lyrics_directory;
		filename += "/";
		filename += file;
	}
	return filename;
}

void Browser::LocateSong(const MPD::Song &s)
{
	if (s.getDirectory().empty())
		return;
	
	itsBrowseLocally = !s.isFromDatabase();
	
	if (myScreen != this)
		switchTo();
	
	if (itsBrowsedDir != s.getDirectory())
		GetDirectory(s.getDirectory());
	for (size_t i = 0; i < w.size(); ++i)
	{
		if (w[i].value().type == itSong && s.getHash() == w[i].value().song->getHash())
		{
			w.highlight(i);
			break;
		}
	}
	drawHeader();
}

void Browser::locateSong(const MPD::Song &s)
{
	if (s.getDirectory().empty())
		throw std::runtime_error("Song's directory is empty");
	
	m_local_browser = !s.isFromDatabase();
	
	if (myScreen != this)
		switchTo();
	
	// change to relevant directory
	if (m_current_directory != s.getDirectory())
	{
		getDirectory(s.getDirectory());
		drawHeader();
	}

	// highlight the item
	auto begin = w.beginV(), end = w.endV();
	auto it = std::find(begin, end, MPD::Item(s));
	if (it != end)
		w.highlight(it-begin);
}

void MediaLibrary::LocateSong(const MPD::Song &s)
{
	std::string primary_tag = s.get(Config.media_lib_primary_tag);
	if (primary_tag.empty())
	{
		std::string item_type = boost::locale::to_lower(
			tagTypeToString(Config.media_lib_primary_tag));
		Statusbar::printf("Can't use this function because the song has no %s tag", item_type);
		return;
	}

	if (!s.isFromDatabase())
	{
		Statusbar::print("Song is not from the database");
		return;
	}
	
	if (myScreen != this)
		switchTo();
	Statusbar::put() << "Jumping to song...";
	Global::wFooter->refresh();

	if (!hasTwoColumns)
	{
		if (Tags.empty())
			update();

		if (!MoveToTag(Tags, primary_tag))
		{
			// The tag could not be found. Since this was called from an existing
			// song, the tag should exist in the library, but it was not listed by
			// list/listallinfo. This is the case with some players where it is not
			// possible to list all of the library, e.g. mopidy with mopidy-spotify.
			// To workaround this we simply insert the missing tag.
			Tags.addItem(PrimaryTag(primary_tag, s.getMTime()));
			std::sort(Tags.beginV(), Tags.endV(), SortPrimaryTags());
			Tags.refresh();
			MoveToTag(Tags, primary_tag);
		}
		Albums.clear();
	}
	
	if (Albums.empty())
		update();

	// When you locate a song in the media library, if no albums or no songs
	// are found, set the active column to the previous one (tags if no albums,
	// and albums if no songs). This makes sure that the active column is not
	// empty, which may make it impossible to move out of.
	//
	// The problem was if you highlight some song in the rightmost column in
	// the media browser and then go to some other window and select locate
	// song. If the tag or album it looked up in the media library was
	// empty, the selection would stay in the songs column while it was empty.
	// This made the selection impossible to change.
	//
	// This only is a problem if a song has some tag or album for which the
	// find command doesn't return any results. This should never really happen
	// unless there is some inconsistency in the player. However, it may
	// happen, so we need to handle it.
	//
	// Note: We don't want to return when no albums are found in two column
	// mode. In this case, we try to insert the album, as we do with tags when
	// they are not found.
	if (hasTwoColumns || !Albums.empty())
	{
		if (!MoveToAlbum(Albums, primary_tag, s))
		{
			// The album could not be found, insert it if in two column mode.
			// See comment about tags not found above. This is the equivalent
			// for two column mode.
			Albums.addItem(AlbumEntry(
				Album(primary_tag, s.getAlbum(), s.getDate(), s.getMTime())
			));
			std::sort(Albums.beginV(), Albums.endV(), SortAlbumEntries());
			Albums.refresh();
			MoveToAlbum(Albums, primary_tag, s);
		}

		Songs.clear();
		update();

		if (!Songs.empty())
		{
			if (s != Songs.current()->value())
			{
				auto begin = Songs.beginV(), end = Songs.endV();
				auto it = std::find(begin, end, s);
				if (it != end)
					Songs.highlight(it-begin);
			}
			nextColumn();
			nextColumn();
		}
		else // invalid album was added, clear the list
			Albums.clear();
	}
	else // invalid tag was added, clear the list
		Tags.clear();
	refresh();
//.........这里部分代码省略.........