5 files changed, 451 insertions, 0 deletions
diff --git a/src/playlist/m3u_playlist_plugin.c b/src/playlist/m3u_playlist_plugin.c
new file mode 100644
index 000000000..1eb2680a9
--- /dev/null
+++ b/src/playlist/m3u_playlist_plugin.c
@@ -0,0 +1,89 @@
+/*
+ * 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.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "playlist/m3u_playlist_plugin.h"
+#include "playlist_plugin.h"
+#include "text_input_stream.h"
+#include "uri.h"
+#include "song.h"
+
+#include <glib.h>
+
+struct m3u_playlist {
+	struct playlist_provider base;
+
+	struct text_input_stream *tis;
+};
+
+static struct playlist_provider *
+m3u_open_stream(struct input_stream *is)
+{
+	struct m3u_playlist *playlist = g_new(struct m3u_playlist, 1);
+
+	playlist_provider_init(&playlist->base, &m3u_playlist_plugin);
+	playlist->tis = text_input_stream_new(is);
+
+	return &playlist->base;
+}
+
+static void
+m3u_close(struct playlist_provider *_playlist)
+{
+	struct m3u_playlist *playlist = (struct m3u_playlist *)_playlist;
+
+	text_input_stream_free(playlist->tis);
+	g_free(playlist);
+}
+
+static struct song *
+m3u_read(struct playlist_provider *_playlist)
+{
+	struct m3u_playlist *playlist = (struct m3u_playlist *)_playlist;
+	const char *line;
+
+	do {
+		line = text_input_stream_read(playlist->tis);
+		if (line == NULL)
+			return NULL;
+
+		while (*line != 0 && g_ascii_isspace(*line))
+			++line;
+	} while (line[0] == '#' || !uri_has_scheme(line));
+
+	return song_remote_new(line);
+}
+
+static const char *const m3u_suffixes[] = {
+	"m3u",
+	NULL
+};
+
+static const char *const m3u_mime_types[] = {
+	"audio/x-mpegurl",
+	NULL
+};
+
+const struct playlist_plugin m3u_playlist_plugin = {
+	.open_stream = m3u_open_stream,
+	.close = m3u_close,
+	.read = m3u_read,
+
+	.suffixes = m3u_suffixes,
+	.mime_types = m3u_mime_types,
+};
diff --git a/src/playlist/m3u_playlist_plugin.h b/src/playlist/m3u_playlist_plugin.h
new file mode 100644
index 000000000..3cb4b8874
--- /dev/null
+++ b/src/playlist/m3u_playlist_plugin.h
@@ -0,0 +1,25 @@
+/*
+ * 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.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef MPD_PLAYLIST_M3U_PLAYLIST_PLUGIN_H
+#define MPD_PLAYLIST_M3U_PLAYLIST_PLUGIN_H
+
+extern const struct playlist_plugin m3u_playlist_plugin;
+
+#endif
diff --git a/src/playlist_list.c b/src/playlist_list.c
new file mode 100644
index 000000000..c9cd1304c
--- /dev/null
+++ b/src/playlist_list.c
@@ -0,0 +1,146 @@
+/*
+ * 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.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "playlist_list.h"
+#include "playlist_plugin.h"
+#include "playlist/m3u_playlist_plugin.h"
+#include "input_stream.h"
+#include "uri.h"
+#include "utils.h"
+
+#include <glib.h>
+
+#include <assert.h>
+
+static const struct playlist_plugin *const playlist_plugins[] = {
+	&m3u_playlist_plugin,
+	NULL
+};
+
+/** which plugins have been initialized successfully? */
+static bool playlist_plugins_enabled[G_N_ELEMENTS(playlist_plugins)];
+
+void
+playlist_list_global_init(void)
+{
+	for (unsigned i = 0; playlist_plugins[i] != NULL; ++i)
+		playlist_plugins_enabled[i] =
+			playlist_plugin_init(playlist_plugins[i], NULL);
+}
+
+void
+playlist_list_global_finish(void)
+{
+	for (unsigned i = 0; playlist_plugins[i] != NULL; ++i)
+		if (playlist_plugins_enabled[i])
+			playlist_plugin_finish(playlist_plugins[i]);
+}
+
+struct playlist_provider *
+playlist_list_open_uri(const char *uri)
+{
+	char *scheme;
+	struct playlist_provider *playlist;
+
+	assert(uri != NULL);
+
+	scheme = g_uri_parse_scheme(uri);
+	if (scheme == NULL)
+		return NULL;
+
+	for (unsigned i = 0; playlist_plugins[i] != NULL; ++i) {
+		const struct playlist_plugin *plugin = playlist_plugins[i];
+
+		if (playlist_plugins_enabled[i] &&
+		    stringFoundInStringArray(plugin->schemes, scheme)) {
+			playlist = playlist_plugin_open_uri(plugin, uri);
+			if (playlist != NULL)
+				break;
+		}
+	}
+
+	g_free(scheme);
+	return playlist;
+}
+
+static struct playlist_provider *
+playlist_list_open_stream_mime(struct input_stream *is)
+{
+	struct playlist_provider *playlist;
+
+	assert(is != NULL);
+	assert(is->mime != NULL);
+
+	for (unsigned i = 0; playlist_plugins[i] != NULL; ++i) {
+		const struct playlist_plugin *plugin = playlist_plugins[i];
+
+		if (playlist_plugins_enabled[i] &&
+		    stringFoundInStringArray(plugin->mime_types, is->mime)) {
+			playlist = playlist_plugin_open_stream(plugin, is);
+			if (playlist != NULL)
+				return playlist;
+		}
+	}
+
+	return NULL;
+}
+
+static struct playlist_provider *
+playlist_list_open_stream_suffix(struct input_stream *is, const char *suffix)
+{
+	struct playlist_provider *playlist;
+
+	assert(is != NULL);
+	assert(suffix != NULL);
+
+	for (unsigned i = 0; playlist_plugins[i] != NULL; ++i) {
+		const struct playlist_plugin *plugin = playlist_plugins[i];
+
+		if (playlist_plugins_enabled[i] &&
+		    stringFoundInStringArray(plugin->suffixes, suffix)) {
+			playlist = playlist_plugin_open_stream(plugin, is);
+			if (playlist != NULL)
+				return playlist;
+		}
+	}
+
+	return NULL;
+}
+
+struct playlist_provider *
+playlist_list_open_stream(struct input_stream *is, const char *uri)
+{
+	const char *suffix;
+	struct playlist_provider *playlist;
+
+	if (is->mime != NULL) {
+		playlist = playlist_list_open_stream_mime(is);
+		if (playlist != NULL)
+			return playlist;
+	}
+
+	suffix = uri != NULL ? uri_get_suffix(uri) : NULL;
+	if (suffix != NULL) {
+		playlist = playlist_list_open_stream_suffix(is, suffix);
+		if (playlist != NULL)
+			return playlist;
+	}
+
+	return NULL;
+}
diff --git a/src/playlist_list.h b/src/playlist_list.h
new file mode 100644
index 000000000..b5ac52a6f
--- /dev/null
+++ b/src/playlist_list.h
@@ -0,0 +1,54 @@
+/*
+ * 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.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef MPD_PLAYLIST_LIST_H
+#define MPD_PLAYLIST_LIST_H
+
+struct playlist_provider;
+struct input_stream;
+
+/**
+ * Initializes all playlist plugins.
+ */
+void
+playlist_list_global_init(void);
+
+/**
+ * Deinitializes all playlist plugins.
+ */
+void
+playlist_list_global_finish(void);
+
+/**
+ * Opens a playlist by its URI.
+ */
+struct playlist_provider *
+playlist_list_open_uri(const char *uri);
+
+/**
+ * Opens a playlist from an input stream.
+ *
+ * @param is an #input_stream object which is open and ready
+ * @param uri optional URI which was used to open the stream; may be
+ * used to select the appropriate playlist plugin
+ */
+struct playlist_provider *
+playlist_list_open_stream(struct input_stream *is, const char *uri);
+
+#endif
diff --git a/src/playlist_plugin.h b/src/playlist_plugin.h
new file mode 100644
index 000000000..3515af109
--- /dev/null
+++ b/src/playlist_plugin.h
@@ -0,0 +1,137 @@
+/*
+ * 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.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef MPD_PLAYLIST_PLUGIN_H
+#define MPD_PLAYLIST_PLUGIN_H
+
+#include <stdbool.h>
+#include <stddef.h>
+
+struct config_param;
+struct input_stream;
+struct tag;
+
+/**
+ * An object which provides the contents of a playlist.
+ */
+struct playlist_provider {
+	const struct playlist_plugin *plugin;
+};
+
+static inline void
+playlist_provider_init(struct playlist_provider *playlist,
+		       const struct playlist_plugin *plugin)
+{
+	playlist->plugin = plugin;
+}
+
+struct playlist_plugin {
+	const char *name;
+
+	/**
+	 * Initialize the plugin.  Optional method.
+	 *
+	 * @param param a configuration block for this plugin, or NULL
+	 * if none is configured
+	 * @return true if the plugin was initialized successfully,
+	 * false if the plugin is not available
+	 */
+	bool (*init)(const struct config_param *param);
+
+	/**
+	 * Deinitialize a plugin which was initialized successfully.
+	 * Optional method.
+	 */
+	void (*finish)(void);
+
+	/**
+	 * Opens the playlist on the specified URI.  This URI has
+	 * either matched one of the schemes or one of the suffixes.
+	 */
+	struct playlist_provider *(*open_uri)(const char *uri);
+
+	/**
+	 * Opens the playlist in the specified input stream.  It has
+	 * either matched one of the suffixes or one of the MIME
+	 * types.
+	 */
+	struct playlist_provider *(*open_stream)(struct input_stream *is);
+
+	void (*close)(struct playlist_provider *playlist);
+
+	struct song *(*read)(struct playlist_provider *playlist);
+
+	const char *const*schemes;
+	const char *const*suffixes;
+	const char *const*mime_types;
+};
+
+/**
+ * Initialize a plugin.
+ *
+ * @param param a configuration block for this plugin, or NULL if none
+ * is configured
+ * @return true if the plugin was initialized successfully, false if
+ * the plugin is not available
+ */
+static inline bool
+playlist_plugin_init(const struct playlist_plugin *plugin,
+		     const struct config_param *param)
+{
+	return plugin->init != NULL
+		? plugin->init(param)
+		: true;
+}
+
+/**
+ * Deinitialize a plugin which was initialized successfully.
+ */
+static inline void
+playlist_plugin_finish(const struct playlist_plugin *plugin)
+{
+	if (plugin->finish != NULL)
+		plugin->finish();
+}
+
+static inline struct playlist_provider *
+playlist_plugin_open_uri(const struct playlist_plugin *plugin, const char *uri)
+{
+	return plugin->open_uri(uri);
+}
+
+static inline struct playlist_provider *
+playlist_plugin_open_stream(const struct playlist_plugin *plugin,
+			    struct input_stream *is)
+{
+	return plugin->open_stream(is);
+}
+
+static inline void
+playlist_plugin_close(struct playlist_provider *playlist)
+{
+	playlist->plugin->close(playlist);
+}
+
+static inline struct song *
+playlist_plugin_read(struct playlist_provider *playlist)
+{
+	return playlist->plugin->read(playlist);
+}
+
+#endif