playlist: moved PlaylistInfo() to playlist_print.c

PlaylistInfo() (notice the capital 'P') sends a stored playlist to the
client.  Move it to a separate library, where all the code which glues
the playlist and the MPD protocol together will live.

src/Makefile.am

@@ -91,6 +91,7 @@ mpd_headers = \
 	player_thread.h \
 	player_control.h \
 	playlist.h \
+	playlist_print.h \
 	playlist_save.h \
 	queue.h \
 	queue_print.h \
@@ -176,6 +177,7 @@ mpd_SOURCES = \
 	player_thread.c \
 	player_control.c \
 	playlist.c \
+	playlist_print.c \
 	playlist_save.c \
 	queue.c \
 	queue_print.c \

src/command.c

@@ -19,6 +19,7 @@
 #include "command.h"
 #include "player_control.h"
 #include "playlist.h"
+#include "playlist_print.h"
 #include "ls.h"
 #include "directory.h"
 #include "directory_print.h"

src/playlist.c

@@ -24,8 +24,6 @@
 #include "ls.h"
 #include "tag.h"
 #include "song.h"
-#include "song_print.h"
-#include "client.h"
 #include "conf.h"
 #include "database.h"
 #include "mapper.h"
@@ -1217,34 +1215,6 @@ unsigned getPlaylistSongId(unsigned song)
 	return queue_position_to_id(&playlist.queue, song);
 }
 
-int PlaylistInfo(struct client *client, const char *utf8file, int detail)
-{
-	GPtrArray *list;
-
-	if (!(list = spl_load(utf8file)))
-		return -1;
-
-	for (unsigned i = 0; i < list->len; ++i) {
-		const char *temp = g_ptr_array_index(list, i);
-		int wrote = 0;
-
-		if (detail) {
-			struct song *song = db_get_song(temp);
-			if (song) {
-				song_print_info(client, song);
-				wrote = 1;
-			}
-		}
-
-		if (!wrote) {
-			client_printf(client, SONG_FILE "%s\n", temp);
-		}
-	}
-
-	spl_free(list);
-	return 0;
-}
-
 enum playlist_result loadPlaylist(const char *utf8file)
 {
 	GPtrArray *list;

src/playlist.h

@@ -174,8 +174,6 @@ int playlistChanges(struct client *client, uint32_t version);
 
 int playlistChangesPosId(struct client *client, uint32_t version);
 
-int PlaylistInfo(struct client *client, const char *utf8file, int detail);
-
 void
 searchForSongsInPlaylist(struct client *client,
 			 unsigned numItems, const LocateTagItem *items);

src/playlist_print.c

@@ -0,0 +1,53 @@
+/*
+ * 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 "playlist_print.h"
+#include "stored_playlist.h"
+#include "song_print.h"
+#include "song.h"
+#include "database.h"
+#include "client.h"
+
+int
+PlaylistInfo(struct client *client, const char *utf8file, int detail)
+{
+	GPtrArray *list;
+
+	if (!(list = spl_load(utf8file)))
+		return -1;
+
+	for (unsigned i = 0; i < list->len; ++i) {
+		const char *temp = g_ptr_array_index(list, i);
+		int wrote = 0;
+
+		if (detail) {
+			struct song *song = db_get_song(temp);
+			if (song) {
+				song_print_info(client, song);
+				wrote = 1;
+			}
+		}
+
+		if (!wrote) {
+			client_printf(client, SONG_FILE "%s\n", temp);
+		}
+	}
+
+	spl_free(list);
+	return 0;
+}

src/playlist_print.h

@@ -0,0 +1,30 @@
+/*
+ * 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
+ */
+
+#ifndef PLAYLIST_PRINT_H
+#define PLAYLIST_PRINT_H
+
+#include "playlist_print.h"
+#include "stored_playlist.h"
+#include "song_print.h"
+#include "client.h"
+
+int
+PlaylistInfo(struct client *client, const char *utf8file, int detail);
+
+#endif