1 files changed, 374 insertions, 0 deletions
diff --git a/src/db_print.c b/src/db_print.c
new file mode 100644
index 000000000..067d1c60f
--- /dev/null
+++ b/src/db_print.c
@@ -0,0 +1,374 @@
+/*
+ * Copyright (C) 2003-2011 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 "db_print.h"
+#include "db_selection.h"
+#include "db_visitor.h"
+#include "locate.h"
+#include "directory.h"
+#include "database.h"
+#include "client.h"
+#include "song.h"
+#include "song_print.h"
+#include "tag.h"
+#include "strset.h"
+
+#include <glib.h>
+
+typedef struct _ListCommandItem {
+	int8_t tagType;
+	const struct locate_item_list *criteria;
+} ListCommandItem;
+
+typedef struct _SearchStats {
+	const struct locate_item_list *criteria;
+	int numberOfSongs;
+	unsigned long playTime;
+} SearchStats;
+
+static bool
+print_visitor_directory(const struct directory *directory, void *data,
+			G_GNUC_UNUSED GError **error_r)
+{
+	struct client *client = data;
+
+	if (!directory_is_root(directory))
+		client_printf(client, "directory: %s\n", directory_get_path(directory));
+
+	return true;
+}
+
+static bool
+print_visitor_song(struct song *song, void *data,
+		   G_GNUC_UNUSED GError **error_r)
+{
+	struct client *client = data;
+	song_print_uri(client, song);
+	return true;
+}
+
+static bool
+print_visitor_song_info(struct song *song, void *data,
+			G_GNUC_UNUSED GError **error_r)
+{
+	struct client *client = data;
+	song_print_info(client, song);
+	return true;
+}
+
+static void
+print_playlist_in_directory(struct client *client,
+			    const struct directory *directory,
+			    const char *name_utf8)
+{
+	if (directory_is_root(directory))
+		client_printf(client, "playlist: %s\n", name_utf8);
+	else
+		client_printf(client, "playlist: %s/%s\n",
+			      directory_get_path(directory), name_utf8);
+}
+
+static bool
+print_visitor_playlist(const struct playlist_metadata *playlist,
+		       const struct directory *directory, void *ctx,
+		       G_GNUC_UNUSED GError **error_r)
+{
+	struct client *client = ctx;
+	print_playlist_in_directory(client, directory, playlist->name);
+	return true;
+}
+
+static bool
+print_visitor_playlist_info(const struct playlist_metadata *playlist,
+			    const struct directory *directory,
+			    void *ctx, G_GNUC_UNUSED GError **error_r)
+{
+	struct client *client = ctx;
+	print_playlist_in_directory(client, directory, playlist->name);
+
+#ifndef G_OS_WIN32
+	struct tm tm;
+#endif
+	char timestamp[32];
+	time_t t = playlist->mtime;
+	strftime(timestamp, sizeof(timestamp),
+#ifdef G_OS_WIN32
+		 "%Y-%m-%dT%H:%M:%SZ",
+		 gmtime(&t)
+#else
+		 "%FT%TZ",
+		 gmtime_r(&t, &tm)
+#endif
+		 );
+	client_printf(client, "Last-Modified: %s\n", timestamp);
+
+	return true;
+}
+
+static const struct db_visitor print_visitor = {
+	.directory = print_visitor_directory,
+	.song = print_visitor_song,
+	.playlist = print_visitor_playlist,
+};
+
+static const struct db_visitor print_info_visitor = {
+	.directory = print_visitor_directory,
+	.song = print_visitor_song_info,
+	.playlist = print_visitor_playlist_info,
+};
+
+bool
+db_selection_print(struct client *client, const struct db_selection *selection,
+		   bool full, GError **error_r)
+{
+	return db_visit(selection, full ? &print_info_visitor : &print_visitor,
+			client, error_r);
+}
+
+struct search_data {
+	struct client *client;
+	const struct locate_item_list *criteria;
+};
+
+static bool
+search_visitor_song(struct song *song, void *_data,
+		    G_GNUC_UNUSED GError **error_r)
+{
+	struct search_data *data = _data;
+
+	if (locate_song_search(song, data->criteria))
+		song_print_info(data->client, song);
+
+	return true;
+}
+
+static const struct db_visitor search_visitor = {
+	.song = search_visitor_song,
+};
+
+bool
+searchForSongsIn(struct client *client, const char *name,
+		 const struct locate_item_list *criteria,
+		 GError **error_r)
+{
+	struct locate_item_list *new_list
+		= locate_item_list_casefold(criteria);
+	struct search_data data;
+
+	data.client = client;
+	data.criteria = new_list;
+
+	bool success = db_walk(name, &search_visitor, &data, error_r);
+
+	locate_item_list_free(new_list);
+
+	return success;
+}
+
+static bool
+find_visitor_song(struct song *song, void *_data,
+		  G_GNUC_UNUSED GError **error_r)
+{
+	struct search_data *data = _data;
+
+	if (locate_song_match(song, data->criteria))
+		song_print_info(data->client, song);
+
+	return true;
+}
+
+static const struct db_visitor find_visitor = {
+	.song = find_visitor_song,
+};
+
+bool
+findSongsIn(struct client *client, const char *name,
+	    const struct locate_item_list *criteria,
+	    GError **error_r)
+{
+	struct search_data data;
+
+	data.client = client;
+	data.criteria = criteria;
+
+	return db_walk(name, &find_visitor, &data, error_r);
+}
+
+static void printSearchStats(struct client *client, SearchStats *stats)
+{
+	client_printf(client, "songs: %i\n", stats->numberOfSongs);
+	client_printf(client, "playtime: %li\n", stats->playTime);
+}
+
+static bool
+stats_visitor_song(struct song *song, void *data,
+		   G_GNUC_UNUSED GError **error_r)
+{
+	SearchStats *stats = data;
+
+	if (locate_song_match(song, stats->criteria)) {
+		stats->numberOfSongs++;
+		stats->playTime += song_get_duration(song);
+	}
+
+	return true;
+}
+
+static const struct db_visitor stats_visitor = {
+	.song = stats_visitor_song,
+};
+
+bool
+searchStatsForSongsIn(struct client *client, const char *name,
+		      const struct locate_item_list *criteria,
+		      GError **error_r)
+{
+	SearchStats stats;
+
+	stats.criteria = criteria;
+	stats.numberOfSongs = 0;
+	stats.playTime = 0;
+
+	if (!db_walk(name, &stats_visitor, &stats, error_r))
+		return false;
+
+	printSearchStats(client, &stats);
+	return true;
+}
+
+bool
+printAllIn(struct client *client, const char *uri_utf8, GError **error_r)
+{
+	struct db_selection selection;
+	db_selection_init(&selection, uri_utf8, true);
+	return db_selection_print(client, &selection, false, error_r);
+}
+
+bool
+printInfoForAllIn(struct client *client, const char *uri_utf8,
+		  GError **error_r)
+{
+	struct db_selection selection;
+	db_selection_init(&selection, uri_utf8, true);
+	return db_selection_print(client, &selection, true, error_r);
+}
+
+static ListCommandItem *
+newListCommandItem(int tagType, const struct locate_item_list *criteria)
+{
+	ListCommandItem *item = g_new(ListCommandItem, 1);
+
+	item->tagType = tagType;
+	item->criteria = criteria;
+
+	return item;
+}
+
+static void freeListCommandItem(ListCommandItem * item)
+{
+	g_free(item);
+}
+
+static void
+visitTag(struct client *client, struct strset *set,
+	 struct song *song, enum tag_type tagType)
+{
+	struct tag *tag = song->tag;
+	bool found = false;
+
+	if (tagType == LOCATE_TAG_FILE_TYPE) {
+		song_print_uri(client, song);
+		return;
+	}
+
+	if (!tag)
+		return;
+
+	for (unsigned i = 0; i < tag->num_items; i++) {
+		if (tag->items[i]->type == tagType) {
+			strset_add(set, tag->items[i]->value);
+			found = true;
+		}
+	}
+
+	if (!found)
+		strset_add(set, "");
+}
+
+struct list_tags_data {
+	struct client *client;
+	ListCommandItem *item;
+	struct strset *set;
+};
+
+static bool
+unique_tags_visitor_song(struct song *song, void *_data,
+			 G_GNUC_UNUSED GError **error_r)
+{
+	struct list_tags_data *data = _data;
+	ListCommandItem *item = data->item;
+
+	if (locate_song_match(song, item->criteria))
+		visitTag(data->client, data->set, song, item->tagType);
+
+	return true;
+}
+
+static const struct db_visitor unique_tags_visitor = {
+	.song = unique_tags_visitor_song,
+};
+
+bool
+listAllUniqueTags(struct client *client, int type,
+		  const struct locate_item_list *criteria,
+		  GError **error_r)
+{
+	ListCommandItem *item = newListCommandItem(type, criteria);
+	struct list_tags_data data = {
+		.client = client,
+		.item = item,
+	};
+
+	if (type >= 0 && type <= TAG_NUM_OF_ITEM_TYPES) {
+		data.set = strset_new();
+	}
+
+	if (!db_walk("", &unique_tags_visitor, &data, error_r)) {
+		freeListCommandItem(item);
+		return false;
+	}
+
+	if (type >= 0 && type <= TAG_NUM_OF_ITEM_TYPES) {
+		const char *value;
+
+		strset_rewind(data.set);
+
+		while ((value = strset_next(data.set)) != NULL)
+			client_printf(client, "%s: %s\n",
+				      tag_item_names[type],
+				      value);
+
+		strset_free(data.set);
+	}
+
+	freeListCommandItem(item);
+
+	return true;
+}