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message_pack.h
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message_pack.h
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/*************************************************************************/
/* message_pack.h */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#ifndef MESSAGE_PACK_H
#define MESSAGE_PACK_H
#include "core/object/ref_counted.h"
#include "core/string/ustring.h"
#include "core/templates/rb_map.h"
#include "core/templates/vector.h"
#include "core/variant/array.h"
#include "core/variant/dictionary.h"
#include "core/variant/typed_array.h"
#include "mpack/mpack.h"
// Limit the depth of recursive functions
#define _RECURSION_MAX_DEPTH 32
// Default maximum message size in bytes: 8MB
#define _MSG_MAX_SIZE (1 << 23)
// Default maximum node size
#define _NODE_MAX_SIZE (1 << 20)
// String length limit: 1MB
#define _STR_MAX_SIZE (1 << 20)
// Binary data size limit in bytes: 1MB
#define _BIN_MAX_SIZE (1 << 20)
class MessagePack : public Object {
GDCLASS(MessagePack, Object);
#if MPACK_EXTENSIONS
HashMap<int8_t, Callable> ext_decoder;
#endif
Variant data;
String err_msg;
mpack_tree_t tree;
bool started = false;
PackedByteArray stream_data;
int stream_head;
int stream_tail;
static Error _got_error_or_not(mpack_error_t p_err, String &r_err_str);
Variant _parse_node_recursive(mpack_node_t p_node, int p_depth);
static size_t _read_stream(mpack_tree_t *p_tree, char *r_buffer, size_t p_count);
static Variant _read_recursive(mpack_reader_t &p_reader, int p_depth);
static void _write_recursive(mpack_writer_t &p_writer, Variant p_val, int p_depth);
typedef size_t (*Callback)(mpack_tree_t *p_tree, char *r_buffer, size_t p_count);
protected:
static void _bind_methods();
public:
static Array decode(const PackedByteArray &p_msg_buf);
static Array encode(const Variant &p_val);
void start_stream_with_reader(const Callback p_reader, void *context, int p_msgs_max = _MSG_MAX_SIZE);
Error try_parse_stream();
void start_stream(int p_msgs_max = _MSG_MAX_SIZE);
Error update_stream(const PackedByteArray &p_data, int p_from = 0, int p_to = INT_MAX);
#if MPACK_EXTENSIONS
void register_extension_type(int8_t p_ext_type, const Callable &p_decoder);
#endif
inline Variant get_data() const { return data; }
inline int get_current_stream_length() const { return tree.data_length; }
inline String get_error_message() const { return err_msg; }
MessagePack();
~MessagePack();
};
#endif // MESSAGE_PACK_H