Package: xfun 0.59.2

xfun: Supporting Functions for Packages Maintained by 'Yihui Xie'

Miscellaneous functions commonly used in other packages maintained by 'Yihui Xie'.

Authors:Yihui Xie [aut, cre, cph], Wush Wu [ctb], Daijiang Li [ctb], Xianying Tan [ctb], Salim Brüggemann [ctb], Christophe Dervieux [ctb]

xfun_0.59.2.tar.gz
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manual.pdf |manual.html✨
DESCRIPTION |NEWS
card.svg |card.png
xfun/json (API)

# Install 'xfun' in R:

install.packages('xfun', repos = c('https://yihui.r-universe.dev', 'https://cloud.r-project.org'))

Bug tracker:https://github.com/yihui/xfun/issues

On CRAN:

18.38 score 154 stars 4.9k packages 1.4k scripts 1.4M downloads 2 mentions 162 exports 0 dependencies

Last updated from:acbe9b3fc7. Checks:13 OK. Indexed: yes.

Target	Result	Time
linux-devel-arm64	OK	173
linux-devel-x86_64	OK	134
source / vignettes	OK	198
linux-release-arm64	OK	153
linux-release-x86_64	OK	143
macos-release-arm64	OK	113
macos-release-x86_64	OK	324
macos-oldrel-arm64	OK	125
macos-oldrel-x86_64	OK	253
windows-devel	OK	128
windows-release	OK	122
windows-oldrel	OK	116
wasm-release	OK	128

Exports:alnum_id append_unique append_utf8 as_strict_list attr2 base_pkgs base64_decode base64_encode base64_uri bg_process broken_packages browser_print bump_version cache_exec cache_rds check_old_package check_package_name compare_Rcheck crandalf_check crandalf_results csv_options decimal_dot del_empty_dir dir_create dir_exists divide_chunk do_once download_cache download_file embed_dir embed_file embed_files env_option existing_files exit_call fenced_block fenced_div file_exists file_ext file_rename file_string find_globals find_locals format_bytes from_root github_api github_releases grep_sub gsub_dir gsub_ext gsub_file gsub_files html_escape html_tag html_value html_view in_dir install_dir install_github is_abs_path is_arm64 is_ascii is_blank is_CRAN_incoming is_linux is_macos is_R_CMD_check is_rel_path is_sub_path is_unix is_web_path is_windows join_words js json_vector lazy_load lazy_save loadable magic_path make_fence mark_dirs md_table md5 mime_type msg_cat n2w native_encode new_app new_record news2md normalize_path numbers_to_words optipng parse_only pkg_attach pkg_attach2 pkg_available pkg_bib pkg_load pkg_load2 post_release proc_kill process_file proj_root prose_index protect_math rand_unit random_port raw_string Rcmd read_all read_bin read_utf8 record record_print relative_path rename_seq rest_api rest_api_raw retry rev_check root_rules Rscript Rscript_call rstudio_type same_path sans_ext serve_dir session_info set_envvar shrink_images sort_file split_lines split_source stop_app str_wrap strict_list strip_html submit_cran system3 tab_content tabset taml_file taml_load taml_save tinify tinify_dir tojson tree try_error try_silent upload_ftp upload_imgur upload_win_builder url_accessible url_destination url_filename valid_syntax with_ext write_utf8 yaml_body yaml_load

Dependencies:

An Introduction to xfun

Rendered fromxfun.Rmdusinglitedown::vignette

Last update: 2026-06-02
Started: 2018-06-15

Citation

Development and contributors

Readme and manuals

Help Manual

Help page	Topics
Generate ID strings	alnum_id
Obtain an attribute of an object without partial matching	attr2
Get base R package names	base_pkgs
Encode/decode data into/from base64 encoding.	base64_decode base64_encode
Generate the Data URI for a file	base64_uri
Start a background process	bg_process
Find out broken packages and reinstall them	broken_packages
Print a web page to PDF/PNG/JPEG	browser_print
Bump version numbers	bump_version
Cache the execution of an expression in memory or on disk	cache_exec
Submit check jobs to crandalf	crandalf_check crandalf_results
Parse comma-separated chunk options	csv_options
Evaluate an expression after forcing the decimal point to be a dot	decimal_dot
Delete an empty directory	del_empty_dir
Create a directory recursively by default	dir_create
Test the existence of files and directories	dir_exists file_exists
Divide chunk options from the code chunk body	divide_chunk
Perform a task once in an R session	do_once
Download a file from a URL and cache it on disk	download_cache
Try various methods to download a file	download_file
Embed a file, multiple files, or directory on an HTML page	embed_dir embed_file embed_files
Retrieve a global option from both 'options()' and environment variables	env_option
Find file paths that exist	existing_files
Call 'on.exit()' in a parent function	exit_call
Create a fenced block in Markdown	fenced_block fenced_div make_fence
Manipulate filename extensions	file_ext sans_ext with_ext
Rename files and directories	file_rename
Read a text file and concatenate the lines by ''\n''	file_string
Find global/local variables in R code	find_globals find_locals
Format numbers of bytes using a specified unit	format_bytes
Get the relative path of a path in a project relative to the current working directory	from_root
Get the tags of GitHub releases of a repository	github_releases
Perform replacement with 'gsub()' on elements matched from 'grep()'	grep_sub
Search and replace strings in files	gsub_dir gsub_ext gsub_file gsub_files
Tools for HTML tags	html_escape html_tag html_value html_view
Evaluate an expression under a specified working directory	in_dir
Install a source package from a directory	install_dir
An alias of 'remotes::install_github()'	install_github
Test if paths are relative or absolute	is_abs_path is_rel_path
Check if a character vector consists of entirely ASCII characters	is_ascii
Test if a character vector consists of blank strings	is_blank
Test if a path is a subpath of a dir	is_sub_path
Test if a path is a web path	is_web_path
Test for types of operating systems	is_arm64 is_linux is_macos is_unix is_windows
Join multiple words into a single string	join_words
Save objects to files and lazy-load them	lazy_load lazy_save
Find a file or directory under a root directory	magic_path
Mark some paths as directories	mark_dirs
Generate a simple Markdown pipe table	md_table
Calculate the MD5 checksums of R objects	md5
Get the MIME types of files	mime_type
Generate a message with 'cat()'	msg_cat
Try to use the system native encoding to represent a character vector	native_encode
Create or stop a local web application	new_app stop_app
Convert package news to the Markdown format	news2md
Normalize paths	normalize_path
Convert numbers to English words	n2w numbers_to_words
Run OptiPNG on all PNG files under a directory	optipng
Parse R code and do not keep the source	parse_only
Attach or load packages, and automatically install missing packages if requested	loadable pkg_attach pkg_attach2 pkg_available pkg_load pkg_load2
Generate BibTeX bibliography databases for R packages	pkg_bib
Perform post-CRAN-release routine tasks	post_release
Kill a process and (optionally) all its child processes	proc_kill
Read a text file, process the text with a function, and write the text back	process_file sort_file
Return the (possible) root directory of a project	proj_root root_rules
Find the indices of lines in Markdown that are prose (not code blocks)	prose_index
Protect math expressions in pairs of backticks in Markdown	protect_math
Pseudo-random numbers on [0, 1) based on a linear congruential generator	rand_unit
Find a random available TCP port	random_port
Print a character vector in its raw form	print.xfun_raw_string raw_string
Read all text files and concatenate their content	read_all
Read all records of a binary file as a raw vector by default	read_bin
Read / write files encoded in UTF-8	append_unique append_utf8 read_utf8 write_utf8
Run R code and record the results	format.xfun_record_results print.xfun_record_results record
Print methods for 'record()'	new_record record_print record_print.default record_print.record_asis
Get the relative path of a path relative to a directory	relative_path
Rename files with a sequential numeric prefix	rename_seq
Get data from a REST API	github_api rest_api rest_api_raw
Retry calling a function for a number of times	retry
Run 'R CMD check' on the reverse dependencies of a package	compare_Rcheck rev_check
Run the commands 'Rscript' and 'R CMD'	Rcmd Rscript
Call a function in a new R session via 'Rscript()'	Rscript_call
Type a character vector into the RStudio source editor	rstudio_type
Test if two paths are the same after they are normalized	same_path
Serve a static directory	serve_dir
An alternative to sessionInfo() to print session information	session_info
Set environment variables	set_envvar
Shrink images to a maximum width	shrink_images
Split a character vector by line breaks	split_lines
Split source lines into complete expressions	split_source
Wrap character vectors	str_wrap
Strict lists	$.xfun_strict_list as_strict_list print.xfun_strict_list strict_list
Strip HTML tags	strip_html
Submit a source package to CRAN	submit_cran
A customized wrapper for 'system2()'	system3
Represent a (recursive) list with (nested) tabsets	tabset tab_content
A simple YAML reader and writer	taml_file taml_load taml_save
Use the Tinify API to compress PNG and JPEG images	tinify tinify_dir
A simple JSON serializer	js json_vector tojson
Turn the output of 'str()' into a tree diagram	tree
Try an expression and see if it throws an error	try_error
Try to evaluate an expression silently	try_silent
Upload to an FTP server via 'curl'	upload_ftp upload_win_builder
Upload an image to imgur.com	upload_imgur
Test if a URL is accessible	url_accessible
Get the final destination of a URL	url_destination
Extract filenames from a URLs	url_filename
Check if the syntax of the code is valid	valid_syntax
Partition the YAML metadata and the body in a document	yaml_body
Read YAML data	yaml_load