ncmpcpp/src/helpers.cpp

/***************************************************************************
 *   Copyright (C) 2008-2012 by Andrzej Rybczak                            *
 *   electricityispower@gmail.com                                          *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program is distributed in the hope that it will be useful,       *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   GNU General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.              *
 ***************************************************************************/

#include <algorithm>

#include "helpers.h"
#include "playlist.h"
#include "statusbar.h"

bool addSongToPlaylist(const MPD::Song &s, bool play, size_t position)
{
	bool result = false;
	if (Config.ncmpc_like_songs_adding && myPlaylist->checkForSong(s))
	{
		auto &w = myPlaylist->main();
		if (play)
		{
			auto song = std::find(w.beginV(), w.endV(), s);
			assert(song != w.endV());
			Mpd.PlayID(song->getID());
			result = true;
		}
		else
		{
			Mpd.StartCommandsList();
			for (auto it = w.rbeginV(); it != w.rendV(); ++it)
				if (*it == s)
					Mpd.Delete(it->getPosition());
			Mpd.CommitCommandsList();
			// we return false in this case
		}
	}
	else
	{
		position = std::min(position, Mpd.GetPlaylistLength());
		int id = Mpd.AddSong(s, position);
		if (id >= 0)
		{
			Statusbar::msg("Added to playlist: %s",
				s.toString(Config.song_status_format_no_colors, Config.tags_separator).c_str()
			);
			if (play)
				Mpd.PlayID(id);
			result = true;
		}
	}
	return result;
}

bool addSongsToPlaylist(const MPD::SongList &list, bool play, size_t position)
{
	if (list.empty())
		return false;
	position = std::min(position, Mpd.GetPlaylistLength());
	Mpd.StartCommandsList();
	for (auto s = list.rbegin(); s != list.rend(); ++s)
		if (Mpd.AddSong(*s, position) < 0)
			break;
	if (play)
		Mpd.Play(position);
	return Mpd.CommitCommandsList();
}

std::string Timestamp(time_t t)
{
	char result[32];
#	ifdef WIN32
	result[strftime(result, 31, "%x %X", localtime(&t))] = 0;
#	else
	tm info;
	result[strftime(result, 31, "%x %X", localtime_r(&t, &info))] = 0;
#	endif // WIN32
	return result;
}

void markSongsInPlaylist(std::shared_ptr<ProxySongList> pl)
{
	size_t list_size = pl->size();
	for (size_t i = 0; i < list_size; ++i)
		if (auto s = pl->getSong(i))
			pl->setBold(i, myPlaylist->checkForSong(*s));
}

std::wstring Scroller(const std::wstring &str, size_t &pos, size_t width)
{
	std::wstring s(str);
	if (!Config.header_text_scrolling)
		return s;
	std::wstring result;
	size_t len = wideLength(s);
	
	if (len > width)
	{
		s += L" ** ";
		len = 0;
		auto b = s.begin(), e = s.end();
		for (auto it = b+pos; it < e && len < width; ++it)
		{
			if ((len += wcwidth(*it)) > width)
				break;
			result += *it;
		}
		if (++pos >= s.length())
			pos = 0;
		for (; len < width; ++b)
		{
			if ((len += wcwidth(*b)) > width)
				break;
			result += *b;
		}
	}
	else
		result = s;
	return result;
}