rex

Friendly regular expressions for R.

https://github.com/r-lib/rex

Science Score: 13.0%

This score indicates how likely this project is to be science-related based on various indicators:

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Scientific vocabulary similarity
Low similarity (12.2%) to scientific vocabulary

Keywords from Contributors

visualisation data-manipulation grammar rmarkdown latex book curl date-time pandoc literate-programming

Last synced: 9 months ago · JSON representation

Repository

Friendly regular expressions for R.

Basic Info

Host: GitHub
Owner: r-lib
License: other
Language: R
Default Branch: main
Homepage: https://rex.r-lib.org
Size: 4.81 MB

Statistics

Stars: 335
Watchers: 12
Forks: 27
Open Issues: 23
Releases: 1

Created over 11 years ago · Last pushed over 2 years ago

Metadata Files

Readme License

Rex

Friendly Regular Expressions

Regular expressions are very powerful feature, however they are often difficult to interpret. Rex allows you to build complex regular expressions from human readable expressions. So instead of writing (and later trying to decipher) r r <- "^(?:(((?:[^:])+)://))?((?:(?:(?!:/).)*)+)(?:(:([[:digit:]]+)))?(?:(/.*))?$"

You can write

```r r <- rex(

start,

## match the protocol -- may exist or may not maybe(capture( capture(exceptsomeof(":")), "://" )),

## match the path capture(oneormore(not(":/"))),

## get the port maybe(capture(":", capture(numbers))),

## and the rest maybe(capture("/", anything)),

end

) ```

While these expressions are a bit longer than their corresponding regular expression, they are much more readable and maintainable.

Installation

r install.packages("rex")

Usage

The vignettes have longer form usage examples.

Each rex() function call can include a number of functions and shortcuts. For a full list of the functions available please see ?rex and ?shortcuts.

Rex Mode

Rex functions are not exported because they are only useful within rex() calls, but they can be temporarily attached using rex_mode() which allows them to be auto-completed.

Using Rex in other packages

Using rex in other packages will generate spurious NOTEs from R CMD check unless you include a call to rex::register_shortcuts() with your package name somewhere in your package source. This function registers all of the rex shortcuts as valid variables fixing the NOTEs.

Name	Email	Commits
Jim Hester	j**r@g**m	164
RobertZK	t**b@g**m	10
Kevin Ushey	k**y@g**m	10
Hadley Wickham	h**m@g**m	7
Michael Chirico	c**m@g**m	6
Ryan C. Thompson	r**t@t**g	2
Oliver Keyes	I****s	2
yutannihilation	y**i@g**m	1
Tim Taylor	t**r@h**k	1
Salim B	s**m@p**e	1
Jack Wasey	j****y	1

Total issues: 58
Total pull requests: 37
Average time to close issues: 3 months
Average time to close pull requests: 20 days
Total issue authors: 23
Total pull request authors: 13
Average comments per issue: 1.69
Average comments per pull request: 1.32
Merged pull requests: 30
Bot issues: 0
Bot pull requests: 0

Past Year

Issues: 4
Pull requests: 0
Average time to close issues: N/A
Average time to close pull requests: N/A
Issue authors: 2
Pull request authors: 0
Average comments per issue: 1.25
Average comments per pull request: 0
Merged pull requests: 0
Bot issues: 0
Bot pull requests: 0

View more stats

Top Authors

Issue Authors

jimhester (20)
MichaelChirico (8)
fangly (3)
krlmlr (3)
robertzk (2)
peterhurford (2)
kevinushey (2)
hadley (2)
bramtayl (2)
kbzsl (1)
RLesur (1)
piccolbo (1)
DarwinAwardWinner (1)
TimTaylor (1)
FelixErnst (1)

Pull Request Authors

robertzk (11)
MichaelChirico (5)
hadley (4)
jimhester (3)
DarwinAwardWinner (3)
Ironholds (3)
debajyoti7 (2)
TimTaylor (2)
salim-b (1)
jackwasey (1)
trinker (1)
yutannihilation (1)
kevinushey (1)

Top Labels

Issue Labels

enhancement (3) help wanted (2) wontfix (1)

Pull Request Labels

Packages

Total packages: 1
Total downloads: unknown

Total dependent packages: 0
Total dependent repositories: 0
Total versions: 4

proxy.golang.org: github.com/r-lib/rex

Documentation: https://pkg.go.dev/github.com/r-lib/rex#section-documentation
License: other
Latest release: v1.2.1
published over 4 years ago

Versions: 4
Dependent Packages: 0
Dependent Repositories: 0

Rankings

Dependent packages count: 5.5%

Average: 5.6%

Dependent repos count: 5.8%

Last synced: 10 months ago

Dependencies

.github/workflows/R-CMD-check.yaml actions

actions/checkout v2 composite
r-lib/actions/check-r-package v2 composite
r-lib/actions/setup-pandoc v2 composite
r-lib/actions/setup-r v2 composite
r-lib/actions/setup-r-dependencies v2 composite

.github/workflows/pkgdown.yaml actions

JamesIves/github-pages-deploy-action 4.1.4 composite
actions/checkout v2 composite
r-lib/actions/setup-pandoc v2 composite
r-lib/actions/setup-r v2 composite
r-lib/actions/setup-r-dependencies v2 composite

.github/workflows/test-coverage.yaml actions

actions/checkout v2 composite
r-lib/actions/setup-r v2 composite
r-lib/actions/setup-r-dependencies v2 composite

DESCRIPTION cran

withr * imports
Hmisc * suggests
covr * suggests
dplyr * suggests
ggplot2 * suggests
knitr * suggests
magrittr * suggests
rmarkdown * suggests
roxygen2 * suggests
rvest * suggests
stringr * suggests
testthat * suggests

rex

Science Score: 13.0%

Keywords from Contributors

Repository

Basic Info

Statistics

Metadata Files

README.md

Rex

Friendly Regular Expressions

Installation

Usage

Rex Mode

Using Rex in other packages

See Also

Owner

GitHub Events

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Packages

proxy.golang.org: github.com/r-lib/rex

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