playlist: moved some printing code to queue_print.c

Moved protocol printing functions which operate on the queue to
queue_print.c.

src/queue_print.c

@@ -0,0 +1,79 @@
+/*
+ * Copyright (C) 2003-2009 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include "queue_print.h"
+#include "queue.h"
+#include "song.h"
+#include "song_print.h"
+#include "client.h"
+
+void
+queue_print_song_info(struct client *client, const struct queue *queue,
+		      unsigned position)
+{
+	song_print_info(client, queue_get(queue, position));
+	client_printf(client, "Pos: %u\nId: %u\n",
+		      position, queue_position_to_id(queue, position));
+}
+
+void
+queue_print_info(struct client *client, const struct queue *queue,
+		 unsigned start, unsigned end)
+{
+	assert(start <= end);
+	assert(end <= queue_length(queue));
+
+	for (unsigned i = start; i < end; ++i)
+		queue_print_song_info(client, queue, i);
+}
+
+void
+queue_print_uris(struct client *client, const struct queue *queue,
+		 unsigned start, unsigned end)
+{
+	assert(start <= end);
+	assert(end <= queue_length(queue));
+
+	for (unsigned i = start; i < end; ++i) {
+		const struct song *song = queue_get(queue, i);
+		char *uri = song_get_uri(song);
+
+		client_printf(client, "%i:%s\n", i, uri);
+		g_free(uri);
+	}
+}
+
+void
+queue_print_changes_info(struct client *client, const struct queue *queue,
+			 uint32_t version)
+{
+	for (unsigned i = 0; i < queue_length(queue); i++) {
+		if (queue_song_newer(queue, i, version))
+			queue_print_song_info(client, queue, i);
+	}
+}
+
+void
+queue_print_changes_position(struct client *client, const struct queue *queue,
+			     uint32_t version)
+{
+	for (unsigned i = 0; i < queue_length(queue); i++)
+		if (queue_song_newer(queue, i, version))
+			client_printf(client, "cpos: %i\nId: %i\n",
+				      i, queue_position_to_id(queue, i));
+}