reflecxx
Protobuf
reflecxx | Protobuf | |
---|---|---|
5 | 174 | |
55 | 63,731 | |
- | 0.6% | |
10.0 | 10.0 | |
about 2 years ago | 3 days ago | |
Python | C++ | |
MIT License | GNU General Public License v3.0 or later |
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For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
reflecxx
- I implement a fast, macro-based namedtuple works under C++11
- reflecxx: A static reflection library framework and tooling. Auto serialization and more.
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Unable to use asio.hpp when using conan
I haven't used the cmake_find_package generator much myself. People like it because it lets you write your cmake in a mostly conan agnostic way. If you don't care about that, I find the plain cmake generator much easier to use. You can inspect the generated conanbuildinfo.cmake file to see the targets, and call conan_basic_setup(TARGETS ). Then you link against targets that look like CONAN_PKG::boost or similar. I usually wrap conan setup in a cmake utility file like this: https://github.com/jimmyorourke/reflecxx/blob/main/test/cmake/ConanSetup.cmake
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Is there any good binary serializer & deserializer for C / C++?
I have a library and tooling that using code generation will allow you to automatically generate serialization/deserialization to your custom binary format. It uses the visitor pattern and code generation for static reflection (eg iterating over fields of a struct). Check it out at https://github.com/jimmyorourke/reflecxx. Particularly it includes an automatic to/from json, which you could use as a starting point for how to write your own visitor.
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figcone - Read JSON, YAML, TOML, XML or INI configuration by declaring a struct
You might be interested in a project I've put together that uses libclang to generate static reflection metadata that can then be used for generic parsing or serialization: https://github.com/jimmyorourke/reflecxx. It has examples of automatic to/from json.
Protobuf
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Hitting every branch on the way down
It's because they changed the versioning format: https://github.com/protocolbuffers/protobuf/releases?page=5
But I suppose old version still receive bugfixes.
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Reverse Engineering Protobuf Definitions from Compiled Binaries
For at least 4 years protobuf has had decent support for self-describing messages (very similar to avro) as well as reflection
https://github.com/protocolbuffers/protobuf/blob/main/src/go...
Xgooglers trying to make do on the cheap will just create a Union of all their messages and include the message def in a self-describing message pattern. Super-sensitive network I/O can elide the message def (empty buffer) and any for RecordIO clone well file compression takes care of the definition.
Definitely useful to be able to dig out old defs but protobuf maintainers have surprisingly added useful features so you don’t have to.
Bonus points tho for extracting the protobuf defs that e.g. Apple bakes into their binaries.
- Show HN: AuthWin – Authenticator App for Windows
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Create Production-Ready SDKs With gRPC Gateway
gRPC Gateway is a protoc plugin that reads gRPC service definitions and generates a reverse proxy server that translates a RESTful JSON API into gRPC.
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Create Production-Ready SDKs with Goa
To use more recent versions of protoc in future applications, you can download them from the Protobuf repository.
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Roll your own auth with Rust and Protobuf
Use the Protobuf CLI protoc and the plugin protoc-gen-tonic.
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Add extra stuff to a “standard” encoding? Sure, why not
> didn’t find any standard for separating protobuf messages
The fact that protobufs are not self-delimiting is an endless source of frustration, but I know of 2 standards:
- SerializeDelimited* is part of the protobuf library: https://github.com/protocolbuffers/protobuf/blob/main/src/go...
- Riegeli is "a file format for storing a sequence of string records, typically serialized protocol buffers. It supports dense compression, fast decoding, seeking, detection and optional skipping of data corruption, filtering of proto message fields for even faster decoding, and parallel encoding": https://github.com/google/riegeli
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Block YouTube Ads on AppleTV by Decrypting and Stripping Ads from Profobuf
It looks like it is in fact universal. Just glancing at the code here, it looks like the tool searches any arbitrary file for bytes that look like encoded protobuf descriptors, specifically looking for bytes that are plausibly the beginning of a FileDescriptorProto message defined here:
https://github.com/protocolbuffers/protobuf/blob/main/src/go...
This takes advantage of the fact that such descriptors are commonly compiled into programs that use protobuf. The descriptors are usually embedded as constant byte arrays. That said, not all protobuf implementations embed the descriptors and those that do often have an option to inhibit such embedding (at the expense of losing some dynamic introspection features).
- How to learn to use protoc in 21 easily infuriating steps
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What's involved in protobuf encoding?
Not much. You can check the source code in https://github.com/protocolbuffers/protobuf. For example, for serializing a boolean in C#: https://github.com/protocolbuffers/protobuf/blob/main/csharp/src/Google.Protobuf/WritingPrimitives.cs#L165. Strings and objects are a bit more complicated, but it is all about turning the data into its byte representation.
What are some alternatives?
metacpp - Meta C++ Library and Tool
FlatBuffers - FlatBuffers: Memory Efficient Serialization Library
miroir - C++20 compile-time reflection library.
SBE - Simple Binary Encoding (SBE) - High Performance Message Codec
namedtuple - Implementation of super-fast C++-styled namedtuple, for compile-time reflection.
MessagePack - MessagePack implementation for C and C++ / msgpack.org[C/C++]
TextLayoutSampler - Utility to display text via multiple Windows API's simultaneously (D2D, DWrite, GDI, GDI+).
cereal - A C++11 library for serialization
metapp - C++ runtime reflection library
Apache Parquet - Apache Parquet
Bitsery - Your binary serialization library
Bond - Bond is a cross-platform framework for working with schematized data. It supports cross-language de/serialization and powerful generic mechanisms for efficiently manipulating data. Bond is broadly used at Microsoft in high scale services.