Supporting Functions for Packages Maintained by 'Yihui Xie'

Documentation for package ‘xfun’ version 0.46

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A B C D E F G I J L M N O P R S T U V W Y misc

-- A --

alnum_id	Generate ID strings
append_unique	Read / write files encoded in UTF-8
append_utf8	Read / write files encoded in UTF-8
as_strict_list	Strict lists
attr	Obtain an attribute of an object without partial matching

-- B --

base64_decode	Encode/decode data into/from base64 encoding.
base64_encode	Encode/decode data into/from base64 encoding.
base64_uri	Generate the Data URI for a file
base_pkgs	Get base R package names
bg_process	Start a background process
broken_packages	Find out broken packages and reinstall them
bump_version	Bump version numbers

-- C --

cache_exec	Cache the execution of an expression in memory or on disk
cache_rds	Cache the value of an R expression to an RDS file
compare_Rcheck	Run 'R CMD check' on the reverse dependencies of a package
crandalf_check	Submit check jobs to crandalf
crandalf_results	Submit check jobs to crandalf
csv_options	Parse comma-separated chunk options

-- D --

decimal_dot	Evaluate an expression after forcing the decimal point to be a dot
del_empty_dir	Delete an empty directory
dir_create	Create a directory recursively by default
dir_exists	Test the existence of files and directories
divide_chunk	Divide chunk options from the code chunk body
download_cache	Download a file from a URL and cache it on disk
download_file	Try various methods to download a file
do_once	Perform a task once in an R session

-- E --

embed_dir	Embed a file, multiple files, or directory on an HTML page
embed_file	Embed a file, multiple files, or directory on an HTML page
embed_files	Embed a file, multiple files, or directory on an HTML page
env_option	Retrieve a global option from both 'options()' and environment variables
existing_files	Find file paths that exist
exit_call	Call 'on.exit()' in a parent function

-- F --

fenced_block	Create a fenced block in Markdown
fenced_div	Create a fenced block in Markdown
file_exists	Test the existence of files and directories
file_ext	Manipulate filename extensions
file_string	Read a text file and concatenate the lines by "\n"
format.xfun_record_results	Run R code and record the results
format_bytes	Format numbers of bytes using a specified unit
from_root	Get the relative path of a path in a project relative to the current working directory

-- G --

github_api	Get data from a REST API
github_releases	Get the tags of GitHub releases of a repository
grep_sub	Perform replacement with 'gsub()' on elements matched from 'grep()'
gsub_dir	Search and replace strings in files
gsub_ext	Search and replace strings in files
gsub_file	Search and replace strings in files
gsub_files	Search and replace strings in files

-- I --

install_dir	Install a source package from a directory
install_github	An alias of 'remotes::install_github()'
in_dir	Evaluate an expression under a specified working directory
is_abs_path	Test if paths are relative or absolute
is_arm64	Test for types of operating systems
is_ascii	Check if a character vector consists of entirely ASCII characters
is_blank	Test if a character vector consists of blank strings
is_linux	Test for types of operating systems
is_macos	Test for types of operating systems
is_rel_path	Test if paths are relative or absolute
is_sub_path	Test if a path is a subpath of a dir
is_unix	Test for types of operating systems
is_web_path	Test if a path is a web path
is_windows	Test for types of operating systems

-- J --

json_vector

A simple JSON serializer

-- L --

loadable

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

-- M --

magic_path	Find a file or directory under a root directory
make_fence	Create a fenced block in Markdown
mark_dirs	Mark some paths as directories
md5	Calculate the MD5 checksums of R objects
md_table	Generate a simple Markdown pipe table
msg_cat	Generate a message with 'cat()'

-- N --

n2w	Convert numbers to English words
native_encode	Try to use the system native encoding to represent a character vector
news2md	Convert package news to the Markdown format
new_app	Create a local web application
new_record	Print methods for 'record()'
normalize_path	Normalize paths
numbers_to_words	Convert numbers to English words

-- O --

optipng

Run OptiPNG on all PNG files under a directory

-- P --

parse_only	Parse R code and do not keep the source
pkg_attach	Attach or load packages, and automatically install missing packages if requested
pkg_attach2	Attach or load packages, and automatically install missing packages if requested
pkg_available	Attach or load packages, and automatically install missing packages if requested
pkg_load	Attach or load packages, and automatically install missing packages if requested
pkg_load2	Attach or load packages, and automatically install missing packages if requested
print.xfun_raw_string	Print a character vector in its raw form
print.xfun_record_results	Run R code and record the results
print.xfun_strict_list	Strict lists
process_file	Read a text file, process the text with a function, and write the text back
proc_kill	Kill a process and (optionally) all its child processes
proj_root	Return the (possible) root directory of a project
prose_index	Find the indices of lines in Markdown that are prose (not code blocks)
protect_math	Protect math expressions in pairs of backticks in Markdown

-- R --

raw_string	Print a character vector in its raw form
Rcmd	Run the commands 'Rscript' and 'R CMD'
read_all	Read all text files and concatenate their content
read_bin	Read all records of a binary file as a raw vector by default
read_utf8	Read / write files encoded in UTF-8
record	Run R code and record the results
record_print	Print methods for 'record()'
record_print.default	Print methods for 'record()'
relative_path	Get the relative path of a path relative to a directory
rename_seq	Rename files with a sequential numeric prefix
rest_api	Get data from a REST API
rest_api_raw	Get data from a REST API
retry	Retry calling a function for a number of times
rev_check	Run 'R CMD check' on the reverse dependencies of a package
root_rules	Return the (possible) root directory of a project
Rscript	Run the commands 'Rscript' and 'R CMD'
Rscript_call	Call a function in a new R session via 'Rscript()'
rstudio_type	Type a character vector into the RStudio source editor

-- S --

same_path	Test if two paths are the same after they are normalized
sans_ext	Manipulate filename extensions
session_info	An alternative to sessionInfo() to print session information
set_envvar	Set environment variables
shrink_images	Shrink images to a maximum width
sort_file	Read a text file, process the text with a function, and write the text back
split_lines	Split a character vector by line breaks
split_source	Split source lines into complete expressions
strict_list	Strict lists
strip_html	Strip HTML tags
submit_cran	Submit a source package to CRAN
system3	Run 'system2()' and mark its character output as UTF-8 if appropriate

-- T --

tinify	Use the Tinify API to compress PNG and JPEG images
tinify_dir	Use the Tinify API to compress PNG and JPEG images
tojson	A simple JSON serializer
tree	Turn the output of 'str()' into a tree diagram
try_error	Try an expression and see if it throws an error
try_silent	Try to evaluate an expression silently

-- U --

upload_ftp	Upload to an FTP server via 'curl'
upload_imgur	Upload an image to imgur.com
upload_win_builder	Upload to an FTP server via 'curl'
url_accessible	Test if a URL is accessible
url_filename	Extract filenames from a URLs

-- V --

valid_syntax

Check if the syntax of the code is valid

-- W --

with_ext	Manipulate filename extensions
write_utf8	Read / write files encoded in UTF-8

-- Y --

yaml_body	Partition the YAML metadata and the body in a document
yaml_load	Read YAML data

-- misc --

$.xfun_strict_list

Strict lists