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path: root/src/queue/QueuePrint.cxx
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/*
 * Copyright (C) 2003-2015 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 "QueuePrint.hxx"
#include "Queue.hxx"
#include "SongFilter.hxx"
#include "SongPrint.hxx"
#include "client/Client.hxx"

/**
 * Send detailed information about a range of songs in the queue to a
 * client.
 *
 * @param client the client which has requested information
 * @param start the index of the first song (including)
 * @param end the index of the last song (excluding)
 */
static void
queue_print_song_info(Client &client, const Queue &queue,
		      unsigned position)
{
	song_print_info(client, queue.Get(position));
	client_printf(client, "Pos: %u\nId: %u\n",
		      position, queue.PositionToId(position));

	uint8_t priority = queue.GetPriorityAtPosition(position);
	if (priority != 0)
		client_printf(client, "Prio: %u\n", priority);
}

void
queue_print_info(Client &client, const Queue &queue,
		 unsigned start, unsigned end)
{
	assert(start <= end);
	assert(end <= queue.GetLength());

	for (unsigned i = start; i < end; ++i)
		queue_print_song_info(client, queue, i);
}

void
queue_print_uris(Client &client, const Queue &queue,
		 unsigned start, unsigned end)
{
	assert(start <= end);
	assert(end <= queue.GetLength());

	for (unsigned i = start; i < end; ++i) {
		client_printf(client, "%i:", i);
		song_print_uri(client, queue.Get(i));
	}
}

void
queue_print_changes_info(Client &client, const Queue &queue,
			 uint32_t version)
{
	for (unsigned i = 0; i < queue.GetLength(); i++) {
		if (queue.IsNewerAtPosition(i, version))
			queue_print_song_info(client, queue, i);
	}
}

void
queue_print_changes_position(Client &client, const Queue &queue,
			     uint32_t version)
{
	for (unsigned i = 0; i < queue.GetLength(); i++)
		if (queue.IsNewerAtPosition(i, version))
			client_printf(client, "cpos: %i\nId: %i\n",
				      i, queue.PositionToId(i));
}

void
queue_find(Client &client, const Queue &queue,
	   const SongFilter &filter)
{
	for (unsigned i = 0; i < queue.GetLength(); i++) {
		const DetachedSong &song = queue.Get(i);

		if (filter.Match(song))
			queue_print_song_info(client, queue, i);
	}
}