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xfun

This package contains several utility functions that I frequently use in other packages, and also miscellaneous functions that I use by myself from time to time. For more information, see https://yihui.org/xfun/.

To install the package from CRAN, use install.packages('xfun'). To install the development version here, you may set the repos option to https://yihui.r-universe.dev/:

options(repos = c(
  yihui = 'https://yihui.r-universe.dev',
  CRAN = 'https://cloud.r-project.org'
))

install.packages('xfun')

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install.packages('xfun')

Monthly Downloads

1,105,778

Version

0.21

License

MIT + file LICENSE

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Repository

https://github.com/yihui/xfun

Maintainer

Yihui Xie

Last Published

February 10th, 2021

Functions in xfun (0.21)

Call on.exit() in a parent function

Install a source package from a directory

numbers_to_words

Convert numbers to English words

Manipulate filename extensions

Kill a process and (optionally) all its child processes

github_releases

Get the tags of Github releases of a repository

Normalize paths

Read a text file, process the text with a function, and write the text back

An alias of remotes::install_github()

Perform replacement with gsub() on elements matched from grep()

Try various methods to download a file

Embed a file, multiple files, or directory on an HTML page

Mark some paths as directories

Read all records of a binary file as a raw vector by default

Perform a task once in an R session

Read / write files encoded in UTF-8

Test if paths are relative or absolute

Test the existence of files and directories

Check if a character vector consists of entirely ASCII characters

Find a file or directory under a root directory

Create a directory recursively by default

Test if an object is identical to FALSE

Read a text file and concatenate the lines by '\n'

Run OptiPNG on all PNG files under a directory

Get the relative path of a path relative a directory

Test if a path is a subpath of a dir

Test for types of operating systems

Get the relative path of a path in a project relative to the current working directory

Test if a path is a web path

A simple JSON serializer

stringsAsStrings

Set the global option options(stringsAsFactors = FALSE) inside a parent function and restore the option after the parent function exits

Return the (possible) root directory of a project

Rename files with a sequential numeric prefix

Search and replace strings in files

Test if two paths are the same after they are normalized

Upload to an FTP server via curl

Turn the output of str() into a tree diagram

Set environment variables

Find the indices of lines in Markdown that are prose (not code blocks)

Extract filenames from a URLs

An alternative to sessionInfo() to print session information

Split a character vector by line breaks

Try to evaluate an expression silently

Evaluate an expression under a specified working directory

Parse R code and do not keep the source

Some utility functions for checking packages

Generate a message with cat()

Try to use the system native encoding to represent a character vector

Attach or load packages, and automatically install missing packages if requested

Protect math expressions in pairs of backticks in Markdown

Print a character vector in its raw form

Split source lines into complete expressions

Check if the syntax of the code is valid

Run R CMD check on the reverse dependencies of a package

Type a character vector into the RStudio source editor

Delete an empty directory

Generate the Data URI for a file

Start a background process

Bump version numbers

Cache the value of an R expression to an RDS file

Call a function in a new R session via Rscript()

Run the commands Rscript and R CMD

Obtain an attribute of an object without partial matching

Encode/decode data into/from base64 encoding.