Exploring and Testing the Toolchain and System Libraries

Helper functions that interface with the system utilities to learn about the local build environment. Lets you explore 'make' rules to test the local configuration, or query 'pkg-config' to find compiler flags and libs needed for building packages with external dependencies. Also contains tools to analyze which libraries that a installed R package linked to by inspecting output from 'ldd' in combination with information from your distribution package manager, e.g. 'rpm' or 'dpkg'.

Font Metrics and Font Management Utilities for R Graphics

Compute text metrics (width, ascent, descent) using 'Cairo' and 'FreeType', independently of the active graphic device. Font lookup is delegated to 'systemfonts'. Additional utilities let users register 'Google Fonts' or bundled 'Liberation' fonts, check font availability, and assemble 'htmlDependency' objects so that fonts are correctly embedded in 'Shiny' applications, 'R Markdown' documents, and 'htmlwidgets' outputs such as 'ggiraph'.

A Clean, Whitespace-Sensitive Template Language for Writing HTML

Jade is a high performance template engine heavily influenced by Haml and implemented with JavaScript for node and browsers.

R Interface to the 'Protocol Buffers' 'API' (Version 2 or 3)

Protocol Buffers are a way of encoding structured data in an efficient yet extensible format. Google uses Protocol Buffers for almost all of its internal 'RPC' protocols and file formats. Additional documentation is available in two included vignettes one of which corresponds to our 'JSS' paper (2016, . A sufficiently recent version of 'Protocol Buffers' library is required; currently version 3.3.0 from 2017 is the stated minimum.

Extract Text from Rich Text Format (RTF) Documents

Wraps the 'unrtf' utility < https://www.gnu.org/software/unrtf/> to extract text from RTF files. Supports document conversion to HTML, LaTeX or plain text. Output in HTML is recommended because 'unrtf' has limited support for converting between character encodings.

Authenticate as a 'GitHub' App

'GitHub' apps provide a powerful way to manage fine grained programmatic access to specific 'git' repositories, without having to create dummy users, and which are safer than a personal access token for automated tasks. This package extends the 'gh' package to let you authenticate and interact with 'GitHub' < https://docs.github.com/en/rest/overview> in 'R' as an app.

Minimal and Uncluttered Package Documentation

Generates simple and beautiful one-page HTML reference manuals with package documentation. Math rendering and syntax highlighting are done server-side in R such that no JavaScript libraries are needed in the browser, which makes the documentation portable and fast to load.

HTTP and WebSocket Server Library

Provides low-level socket and protocol support for handling HTTP and WebSocket requests directly from within R. It is primarily intended as a building block for other packages, rather than making it particularly easy to create complete web applications using httpuv alone. httpuv is built on top of the libuv and http-parser C libraries, both of which were developed by Joyent, Inc. (See LICENSE file for libuv and http-parser license information.)

R Bindings for 'ZeroMQ'

Interface to the 'ZeroMQ' lightweight messaging kernel (see < https://zeromq.org/> for more information).

Minimal Examples of Using Rust Code in R

Template R package with minimal setup to use Rust code in R without hacks or frameworks. Includes basic examples of importing cargo dependencies, spawning threads and passing numbers or strings from Rust to R. Cargo crates are automatically 'vendored' in the R source package to support offline installation. The GitHub repository for this package has more details and also explains how to set up CI. This project was first presented at 'Erum2018' to showcase R-Rust integration < https://jeroen.github.io/erum2018/>; for a real world use-case, see the 'gifski' package on 'CRAN'.