Add command stickertypes

Prints all available stickertypes like tagtypes for tags.

NEWS

@@ -10,7 +10,7 @@ ver 0.24 (not yet released)
   - show PCRE support in "config" response
   - apply Unicode normalization to case-insensitive filter expressions
   - stickers on playlists and some tag types
-  - new commands "stickernames" and "playlistlength"
+  - new commands "stickernames", "stickertypes" and "playlistlength"
   - new "search"/"find" filter "added-since"
   - allow range in listplaylist and listplaylistinfo
   - "sticker find" supports sort and window parameter and new sticker compare operators "eq", "lt" and "gt"

doc/protocol.rst

@@ -1579,6 +1579,9 @@ Examples:
 :command:`stickernames`
     Gets a list of uniq sticker names.
 
+:command:`stickertypes`
+    Shows a list of available sticker types.
+
 Connection settings
 ===================
 

src/command/AllCommands.cxx

@@ -188,6 +188,7 @@ static constexpr struct command commands[] = {
 #ifdef ENABLE_SQLITE
 	{ "sticker", PERMISSION_ADMIN, 3, -1, handle_sticker },
 	{ "stickernames", PERMISSION_ADMIN, 0, 0, handle_sticker_names },
+	{ "stickertypes", PERMISSION_ADMIN, 0, 0, handle_sticker_types },
 #endif
 	{ "stop", PERMISSION_PLAYER, 0, 0, handle_stop },
 	{ "subscribe", PERMISSION_READ, 1, 1, handle_subscribe },

src/command/StickerCommands.cxx

@@ -17,6 +17,7 @@
 #include "Instance.hxx"
 #include "util/StringAPI.hxx"
 #include "util/ScopeExit.hxx"
+#include "tag/Settings.hxx"
 #include "tag/ParseName.hxx"
 #include "tag/Names.hxx"
 #include "sticker/TagSticker.hxx"
@@ -25,6 +26,7 @@
 #include "db/PlaylistInfo.hxx"
 #include "db/PlaylistVector.hxx"
 #include "db/DatabaseLock.hxx"
+#include <fmt/format.h>
 #include "song/Filter.hxx"
 
 namespace {
@@ -454,3 +456,20 @@ handle_sticker(Client &client, Request args, Response &r)
 	r.Error(ACK_ERROR_ARG, "bad request");
 	return CommandResult::ERROR;
 }
+
+CommandResult
+handle_sticker_types(Client &client, Request args, Response &r)
+{
+	(void) client;
+	(void) args;
+	const auto tag_mask = global_tag_mask & r.GetTagMask();
+
+	r.Fmt("stickertype: filter\n");
+	r.Fmt("stickertype: playlist\n");
+	r.Fmt("stickertype: song\n");
+	for (unsigned i = 0; i < TAG_NUM_OF_ITEM_TYPES; i++)
+		if (sticker_allowed_tags.Test(TagType(i)) &&
+		    tag_mask.Test(TagType(i)))
+			r.Fmt(FMT_STRING("stickertype: {}\n"), tag_item_names[i]);
+	return CommandResult::OK;
+}

src/command/StickerCommands.hxx

@@ -14,5 +14,7 @@ CommandResult
 handle_sticker(Client &client, Request request, Response &response);
 CommandResult
 handle_sticker_names(Client &client, Request request, Response &response);
+CommandResult
+handle_sticker_types(Client &client, Request request, Response &response);
 
 #endif