base on Ruby FFI # Ruby-FFI https://github.com/ffi/ffi/wiki ## Description Ruby-FFI is a gem for programmatically loading dynamically-linked native libraries, binding functions within them, and calling those functions from Ruby code. Moreover, a Ruby-FFI extension works without changes on CRuby (MRI), JRuby, Rubinius and TruffleRuby. [Discover why you should write your next extension using Ruby-FFI](https://github.com/ffi/ffi/wiki/why-use-ffi). ## Features * Intuitive DSL * Supports all C native types * C structs (also nested), enums and global variables * Callbacks from C to Ruby * Automatic garbage collection of native memory * Usable in Ractor: [How-to-use-FFI-in-Ruby-Ractors](https://github.com/ffi/ffi/wiki/Ractors) ## Synopsis ```ruby require 'ffi' module MyLib extend FFI::Library ffi_lib 'c' attach_function :puts, [ :string ], :int end MyLib.puts 'Hello, World using libc!' ``` For less minimalistic and more examples you may look at: * the `samples/` folder * the examples on the [wiki](https://github.com/ffi/ffi/wiki) * the projects using FFI listed on the wiki: https://github.com/ffi/ffi/wiki/projects-using-ffi ## Requirements When installing the gem on CRuby (MRI), you will need: * A C compiler (e.g., Xcode on macOS, `gcc` or `clang` on everything else) Optionally (speeds up installation): * The `libffi` library and development headers - this is commonly in the `libffi-dev` or `libffi-devel` packages The ffi gem comes with a builtin libffi version, which is used, when the system libffi library is not available or too old. Use of the system libffi can be enforced by: ``` gem install ffi -- --enable-system-libffi # to install the gem manually bundle config build.ffi --enable-system-libffi # for bundle install ``` or prevented by `--disable-system-libffi`. On Linux systems running with [PaX](https://en.wikipedia.org/wiki/PaX) (Gentoo, Alpine, etc.), FFI may trigger `mprotect` errors. You may need to disable [mprotect](https://en.wikibooks.org/wiki/Grsecurity/Appendix/Grsecurity_and_PaX_Configuration_Options#Restrict_mprotect.28.29) for ruby (`paxctl -m [/path/to/ruby]`) for the time being until a solution is found. On FreeBSD systems pkgconf must be installed for the gem to be able to compile using clang. Install either via packages `pkg install pkgconf` or from ports via `devel/pkgconf`. On JRuby and TruffleRuby, there are no requirements to install the FFI gem, and `require 'ffi'` works even without installing the gem (i.e., the gem is preinstalled on these implementations). ## Installation From rubygems: [sudo] gem install ffi From a Gemfile using git or GitHub gem 'ffi', github: 'ffi/ffi', submodules: true or from the git repository on github: git clone git://github.com/ffi/ffi.git cd ffi git submodule update --init --recursive bundle install rake install ### Install options: * `--enable-system-libffi` : Force usage of system libffi * `--disable-system-libffi` : Force usage of builtin libffi * `--enable-libffi-alloc` : Force closure allocation by libffi * `--disable-libffi-alloc` : Force closure allocation by builtin method ## License The ffi library is covered by the BSD license, also see the LICENSE file. The specs are covered by the same license as [ruby/spec](https://github.com/ruby/spec), the MIT license. ## Credits The following people have submitted code, bug reports, or otherwise contributed to the success of this project: * Alban Peignier <[email protected]> * Aman Gupta <[email protected]> * Andrea Fazzi <[email protected]> * Andreas Niederl <[email protected]> * Andrew Cholakian <[email protected]> * Antonio Terceiro <[email protected]> * Benoit Daloze <[email protected]> * Brian Candler <[email protected]> * Brian D. Burns <[email protected]> * Bryan Kearney <[email protected]> * Charlie Savage <[email protected]> * Chikanaga Tomoyuki <[email protected]> * Hongli Lai <[email protected]> * Ian MacLeod <[email protected]> * Jake Douglas <[email protected]> * Jean-Dominique Morani <[email protected]> * Jeremy Hinegardner <[email protected]> * Jesús García Sáez <[email protected]> * Joe Khoobyar <[email protected]> * Jurij Smakov <[email protected]> * KISHIMOTO, Makoto <[email protected]> * Kim Burgestrand <[email protected]> * Lars Kanis <[email protected]> * Luc Heinrich <[email protected]> * Luis Lavena <[email protected]> * Matijs van Zuijlen <[email protected]> * Matthew King <[email protected]> * Mike Dalessio <[email protected]> * NARUSE, Yui <[email protected]> * Park Heesob <[email protected]> * Shin Yee <[email protected]> * Stephen Bannasch <[email protected]> * Suraj N. Kurapati <[email protected]> * Sylvain Daubert <[email protected]> * Victor Costan * [email protected] * ctide <[email protected]> * emboss <[email protected]> * hobophobe <[email protected]> * meh <[email protected]> * postmodern <[email protected]> * [email protected] <[email protected]> * Wayne Meissner <[email protected]> ", Assign "at most 3 tags" to the expected json: {"id":"2179","tags":[]} "only from the tags list I provide: [{"id":77,"name":"3d"},{"id":89,"name":"agent"},{"id":17,"name":"ai"},{"id":54,"name":"algorithm"},{"id":24,"name":"api"},{"id":44,"name":"authentication"},{"id":3,"name":"aws"},{"id":27,"name":"backend"},{"id":60,"name":"benchmark"},{"id":72,"name":"best-practices"},{"id":39,"name":"bitcoin"},{"id":37,"name":"blockchain"},{"id":1,"name":"blog"},{"id":45,"name":"bundler"},{"id":58,"name":"cache"},{"id":21,"name":"chat"},{"id":49,"name":"cicd"},{"id":4,"name":"cli"},{"id":64,"name":"cloud-native"},{"id":48,"name":"cms"},{"id":61,"name":"compiler"},{"id":68,"name":"containerization"},{"id":92,"name":"crm"},{"id":34,"name":"data"},{"id":47,"name":"database"},{"id":8,"name":"declarative-gui "},{"id":9,"name":"deploy-tool"},{"id":53,"name":"desktop-app"},{"id":6,"name":"dev-exp-lib"},{"id":59,"name":"dev-tool"},{"id":13,"name":"ecommerce"},{"id":26,"name":"editor"},{"id":66,"name":"emulator"},{"id":62,"name":"filesystem"},{"id":80,"name":"finance"},{"id":15,"name":"firmware"},{"id":73,"name":"for-fun"},{"id":2,"name":"framework"},{"id":11,"name":"frontend"},{"id":22,"name":"game"},{"id":81,"name":"game-engine "},{"id":23,"name":"graphql"},{"id":84,"name":"gui"},{"id":91,"name":"http"},{"id":5,"name":"http-client"},{"id":51,"name":"iac"},{"id":30,"name":"ide"},{"id":78,"name":"iot"},{"id":40,"name":"json"},{"id":83,"name":"julian"},{"id":38,"name":"k8s"},{"id":31,"name":"language"},{"id":10,"name":"learning-resource"},{"id":33,"name":"lib"},{"id":41,"name":"linter"},{"id":28,"name":"lms"},{"id":16,"name":"logging"},{"id":76,"name":"low-code"},{"id":90,"name":"message-queue"},{"id":42,"name":"mobile-app"},{"id":18,"name":"monitoring"},{"id":36,"name":"networking"},{"id":7,"name":"node-version"},{"id":55,"name":"nosql"},{"id":57,"name":"observability"},{"id":46,"name":"orm"},{"id":52,"name":"os"},{"id":14,"name":"parser"},{"id":74,"name":"react"},{"id":82,"name":"real-time"},{"id":56,"name":"robot"},{"id":65,"name":"runtime"},{"id":32,"name":"sdk"},{"id":71,"name":"search"},{"id":63,"name":"secrets"},{"id":25,"name":"security"},{"id":85,"name":"server"},{"id":86,"name":"serverless"},{"id":70,"name":"storage"},{"id":75,"name":"system-design"},{"id":79,"name":"terminal"},{"id":29,"name":"testing"},{"id":12,"name":"ui"},{"id":50,"name":"ux"},{"id":88,"name":"video"},{"id":20,"name":"web-app"},{"id":35,"name":"web-server"},{"id":43,"name":"webassembly"},{"id":69,"name":"workflow"},{"id":87,"name":"yaml"}]" returns me the "expected json"