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/*
* Copyright (C) 2003-2014 The Music Player Daemon Project
* http://www.musicpd.org
*
* 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 Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "config.h"
#include "Count.hxx"
#include "Selection.hxx"
#include "Interface.hxx"
#include "client/Client.hxx"
#include "LightSong.hxx"
#include <functional>
struct SearchStats {
unsigned n_songs;
unsigned long total_time_s;
};
static void
PrintSearchStats(Client &client, const SearchStats &stats)
{
client_printf(client,
"songs: %u\n"
"playtime: %lu\n",
stats.n_songs, stats.total_time_s);
}
static bool
stats_visitor_song(SearchStats &stats, const LightSong &song)
{
stats.n_songs++;
stats.total_time_s += song.GetDuration();
return true;
}
bool
PrintSongCount(Client &client, const char *name,
const SongFilter *filter,
Error &error)
{
const Database *db = client.GetDatabase(error);
if (db == nullptr)
return false;
const DatabaseSelection selection(name, true, filter);
SearchStats stats;
stats.n_songs = 0;
stats.total_time_s = 0;
using namespace std::placeholders;
const auto f = std::bind(stats_visitor_song, std::ref(stats),
_1);
if (!db->Visit(selection, f, error))
return false;
PrintSearchStats(client, stats);
return true;
}
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