playlist_{any,song,queue}: convert to C++

src/PlaylistQueue.cxx

@@ -0,0 +1,98 @@
+/*
+ * Copyright (C) 2003-2013 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 "PlaylistQueue.hxx"
+#include "playlist_plugin.h"
+#include "PlaylistAny.hxx"
+#include "PlaylistSong.hxx"
+
+extern "C" {
+#include "playlist.h"
+#include "song.h"
+#include "input_stream.h"
+}
+
+enum playlist_result
+playlist_load_into_queue(const char *uri, struct playlist_provider *source,
+			 unsigned start_index, unsigned end_index,
+			 struct playlist *dest, struct player_control *pc,
+			 bool secure)
+{
+	enum playlist_result result;
+	struct song *song;
+	char *base_uri = uri != NULL ? g_path_get_dirname(uri) : NULL;
+
+	for (unsigned i = 0;
+	     i < end_index && (song = playlist_plugin_read(source)) != NULL;
+	     ++i) {
+		if (i < start_index) {
+			/* skip songs before the start index */
+			song_free(song);
+			continue;
+		}
+
+		song = playlist_check_translate_song(song, base_uri, secure);
+		if (song == NULL)
+			continue;
+
+		result = playlist_append_song(dest, pc, song, NULL);
+		song_free(song);
+		if (result != PLAYLIST_RESULT_SUCCESS) {
+			g_free(base_uri);
+			return result;
+		}
+	}
+
+	g_free(base_uri);
+
+	return PLAYLIST_RESULT_SUCCESS;
+}
+
+enum playlist_result
+playlist_open_into_queue(const char *uri,
+			 unsigned start_index, unsigned end_index,
+			 struct playlist *dest, struct player_control *pc,
+			 bool secure)
+{
+	GMutex *mutex = g_mutex_new();
+	GCond *cond = g_cond_new();
+
+	struct input_stream *is;
+	struct playlist_provider *playlist =
+		playlist_open_any(uri, mutex, cond, &is);
+	if (playlist == NULL) {
+		g_cond_free(cond);
+		g_mutex_free(mutex);
+		return PLAYLIST_RESULT_NO_SUCH_LIST;
+	}
+
+	enum playlist_result result =
+		playlist_load_into_queue(uri, playlist, start_index, end_index,
+					 dest, pc, secure);
+	playlist_plugin_close(playlist);
+
+	if (is != NULL)
+		input_stream_close(is);
+
+	g_cond_free(cond);
+	g_mutex_free(mutex);
+
+	return result;
+}