cffr

1.4.1

Generate Citation File Format ('CFF') Metadata for R Packages

5packages depend

29.9Kdownloads / year

100.0%test coverage

13/13checks pass

Overview

About

Maintained by Diego HernangómezFirst published 2021-11-0419 releasesCRAN page ↗GitHub ↗

Citation File Format ('CFF') version 1.2.0 doi:10.5281/zenodo.5171937 is a human- and machine-readable file format for software citation metadata. Core utilities generate, read, write and validate Citation File Format metadata for R packages.

Install

R (CRAN)pak (dev)Ubuntu (r2u)Fedora (COPR)openSUSE (OBS)

install.packages("cffr", repos = "https://cloud.r-project.org/")

Installs the current CRAN release. Prebuilt binaries on Windows and macOS.

if (!requireNamespace("pak", quietly = TRUE))
  install.packages("pak", repos = "https://cloud.r-project.org/")
pak::pak("ropensci/cffr")

Development version from ropensci/cffr. Installs pak first if it is not already available.

Release

# enable cranapt (r2u) if it is not already set up, then install
grep -rqs r2u.stat.illinois.edu /etc/apt/sources.list /etc/apt/sources.list.d/ \
  || curl -fsSL https://raw.githubusercontent.com/eddelbuettel/r2u/master/inst/scripts/add_cranapt_noble.sh | sudo bash
sudo apt install -y r-cran-cffr

Fast Ubuntu binaries via r2u (no compilation). The cranapt setup runs once and is skipped when it is already enabled.

bspm (used by r2u) also needs make: sudo apt install make

# enable the iucar/cran COPR if it is not already present, then install
ls /etc/yum.repos.d/*iucar*cran*.repo >/dev/null 2>&1 \
  || sudo dnf copr enable -y iucar/cran
sudo dnf install -y R-CRAN-cffr

RPMs from the iucar/cran COPR, rebuilt from CRAN.

For install.packages() integration in R, also: sudo dnf install R-CoprManager

# add the autoCRAN OBS repo (Tumbleweed) if it is missing, then install
zypper -q lr | grep -qi autoCRAN \
  || sudo zypper addrepo https://download.opensuse.org/repositories/devel:/languages:/R:/autoCRAN/openSUSE_Tumbleweed/devel:languages:R:autoCRAN.repo
sudo zypper install -y R-cffr

RPMs auto-built from CRAN on openSUSE OBS (Tumbleweed).

Health

CRAN checks

13OK

Slowest check: 8.9 min · r-release-macos-x86_64

Code health

Yes

Tests · ratio 1.87

100.0%

Coverage · measured lines

100%

Documentation · exports

Dependencies · direct

Check history

OK2026-07-19
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-07-18
12 OK · 0 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
OK2026-06-15
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-06-12
12 OK · 0 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
OK2026-06-09
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Show 4 earlier snapshots

ERROR2026-06-08
12 OK · 0 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
OK2026-03-22
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-03-20
13 OK · 0 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
OK2026-03-10
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMEYes · 2,454 wordsVignettesNopkgdown siteNoNEWSYes · 100% structuredCode of conductNoContributing guideNo

Examples that run: 71%
Documented parameters: 99%
Return-value docs: 100%
References docs: 22%

Downloads

29.9K

CRAN downloads in the past year

Rank #2,704 · ~82/day · ~2.5K/mo

Releases R versions

Daily download trend is not available in this view yet.

2.3K30 days

7.3K90 days

29.9K1 year

Compare downloads with other packages →

Also on1.7K r2u6 autocran4.8K conda_forge13 c2d4u

Repository

GitHub ↗ ropensci/cffr

26Stars

4Forks

0Open issues

0Open PRs

21Releases

888Commits

6Contributors

rr-packageattributioncitation-filescitationcitation-file-formatrstatsropensci

License GPL-3.0 · 888 commits · Last activity 2026-07-18

Repository practices

Upstream repositoryBeta

14 development-tooling and community-health practices detected across 9 families in the upstream repository

Checks run against github.com/ropensci/cffr on 2026-07-19.

Continuous integration (1)

GitHub Actions

Reproducibility and dev environment (1)

data-raw/

CRAN release process (1)

revdep/

Docs source (1)

README.qmd

Show all practices

Research and citation (2)

CITATION.cffcodemeta.json

Automation and maintenance (1)

Dependabot

Lint, format, editor (4)

lintrAirVS CodeRStudio project

Governance and community (2)

Issue templatesSupport guide

Git structural (1)

.gitattributes

How this is detected·Detection ruleset v1 (2026-07-18)

Dependencies

Declared dependencies

12 external dependencies (excludes base and recommended)

Depends (1)

R >= 4.1.0

Imports (7)

cli desc jsonlite jsonvalidatetoolsutilsyaml

LinkingTo (0)

none

Suggests (7)

bibtex knitr lifecycle quarto rmarkdown testthat usethis

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

5direct

0indirect

rcompendium washr iemisctext jab.adverse.reactions sdcLog

Code & Tests

Code Composition

R 10,149 (46%)Markdown 6,876 (31%)Vignettes 2,439 (11%)Rd 2,163 (10%)Other 458 (2%)

Code characteristics

Object systems

S337

Cyclomatic complexity: 2.0 median / 10 max
Test cases: 203 / 1.87 per code line

Test coverage

Line coverage

100%

Expression

100.0%

Tests / Examples

100.0% / – ex

Functions

203 34 exported

Complexity

2.3 avg / 10 max

Call network

203 nodes / 319 edges

Call graph

Open call graph →

Loading call graph…

Lowest coverage

203 functions

Function	Cyclo	Coverage
as.cff exp	1	100%
as_bibentry exp	1	100%
as_cff exp	1	100%
as_cff_person exp	1	100%
cff exp	5	100%
cff_create exp	4	100%

Datasets

Bundled datasets · 1

Name	Class	Rows × Cols	Also ships in
cran_to_spdx	data.frame	86 × 2	–

People & History

People (3)

Maintainer (1)

Diego Hernangómez

Author, Maintainer, Copyright holder

Authors (1)

Diego Hernangómez

Author, Maintainer, Copyright holder

Diego Hernangómez

Author, Maintainer, Copyright holder

Reviewers (2)

Scott Chamberlain

Reviewer

João Martins

Reviewer

Package Timeline

19 releases. Pick two to compare their code metrics. R releases are shown for context.

1.4.1Latest
2026-06-17 · current release · diff ↗
1.4.0
2026-05-04 · diff ↗
R
R 4.6.0 released · 2026-04-24
1.3.0
2026-03-13 · diff ↗
1.2.1
2026-01-12 · diff ↗
R
R 4.5.0 released · 2025-04-11
1.2.0
2025-01-25 · diff ↗
1.1.1
2024-08-16 · diff ↗
1.1.0
2024-07-23 · diff ↗
R
R 4.4.0 released · 2024-04-24
1.0.1
2024-04-09 · diff ↗
1.0.0
2024-03-12 · diff ↗
0.5.0
2023-05-05 · diff ↗
R
R 4.3.0 released · 2023-04-21
0.4.1
2023-01-30 · diff ↗
0.4.0
2022-11-17 · diff ↗

Show 9 earlier events

0.3.0
2022-09-23 · diff ↗
0.2.3
2022-08-15 · diff ↗
R
R 4.2.0 released · 2022-04-22
0.2.2
2022-04-08 · diff ↗
0.2.1
2022-01-16 · diff ↗
0.2.0
2022-01-04 · diff ↗
0.1.1
2021-11-11 · diff ↗
0.1.0
2021-11-04
R
R 4.1.0 released · 2021-05-18

Package metadata

First published: 2021-11-04
Total releases: 19 / 5 yrs
License: GPL (>= 3) OSI
Minimum R: ≥ 4.1.0
Bundled data: 0.9 KB / 1 file
Download size: 386 KB
Installed size: not tracked yet
With dependencies: not tracked yet

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