Coerce lists, person and bibentry objects to cff

as_cff() turns an existing list-like R object into a so-called cff, a list with class cff, with the corresponding sub-class if applicable, .

as_cff is an S3 generic, with methods for:

• person objects as produced by utils::person().

• bibentry objects as produced by utils::bibentry().

• Bibtex object as produced by toBibtex().

• Default: Other inputs are first coerced with as.list().

Usage

as_cff(x, ...)

# S3 method for default
as_cff(x, ...)

# S3 method for list
as_cff(x, ...)

# S3 method for person
as_cff(x, ...)

# S3 method for bibentry
as_cff(x, ...)

# S3 method for Bibtex
as_cff(x, ...)

Arguments

x

A person, bibentry or other object that could be coerced to a list.

...

Additional arguments to be passed on to other methods.

Value

• as_cff.person() returns an object with classes cff_pers_lst, cff.

• as_cff.bibentry() and as_cff.Bibtex() returns an object with classes cff_ref_lst, cff.

• The rest of methods returns usually an object of class cff. However if x have an structure compatible with definitions.person, definitions.entity or definitions.reference the object would have the corresponding subclass.

Learn more about the cffr class system in cff_class.

Details

For as_cff.bibentry() / as_cff.Bibtex() see vignette("bibtex_cff", "cffr") to understand how the mapping is performed.

as_cff_person() is preferred over as_cff.person(), since it can handle character person such as "Davis, Jr., Sammy". For person objects both functions are similar.

See also

• cff(): Create a full cff object from scratch.

• cff_modify(): Modify a cff object.

• cff_create(): Create a cff object of a R package.

• cff_read(): Create a cff object from a external file.

• as_cff_person(): Recommended way for creating persons in CFF format.

Learn more about the cffr class system in cff_class.

Coercing between R classes with S3 Methods: as_bibentry(), as_cff_person(), cff_class

Examples

# Convert a list to "cff" object
cffobj <- as_cff(list(
  "cff-version" = "1.2.0",
  title = "Manipulating files"
))

class(cffobj)
#> [1] "cff"

# Nice display thanks to yaml package
cffobj
#> cff-version: 1.2.0
#> title: Manipulating files

# bibentry method
a_cit <- citation("cffr")[[1]]

a_cit
#> Hernangómez D (2021). “cffr: Generate Citation File Format Metadata for
#> R Packages.” _Journal of Open Source Software_, *6*(67), 3900.
#> doi:10.21105/joss.03900 <https://doi.org/10.21105/joss.03900>,
#> <https://doi.org/10.21105/joss.03900>.
#> 
#> A BibTeX entry for LaTeX users is
#> 
#>   @Article{hernangomez2021,
#>     doi = {10.21105/joss.03900},
#>     url = {https://doi.org/10.21105/joss.03900},
#>     year = {2021},
#>     publisher = {The Open Journal},
#>     volume = {6},
#>     number = {67},
#>     pages = {3900},
#>     author = {Diego Hernangómez},
#>     title = {{cffr}: Generate Citation File Format Metadata for {R} Packages},
#>     journal = {Journal of Open Source Software},
#>   }

as_cff(a_cit)
#> - type: article
#>   title: 'cffr: Generate Citation File Format Metadata for R Packages'
#>   authors:
#>   - family-names: Hernangómez
#>     given-names: Diego
#>   doi: 10.21105/joss.03900
#>   url: https://doi.org/10.21105/joss.03900
#>   year: '2021'
#>   publisher:
#>     name: The Open Journal
#>   volume: '6'
#>   issue: '67'
#>   journal: Journal of Open Source Software
#>   start: '3900'

# Bibtex method
a_bib <- toBibtex(a_cit)

a_bib
#> @Article{hernangomez2021,
#>   doi = {10.21105/joss.03900},
#>   url = {https://doi.org/10.21105/joss.03900},
#>   year = {2021},
#>   publisher = {The Open Journal},
#>   volume = {6},
#>   number = {67},
#>   pages = {3900},
#>   author = {Diego Hernangómez},
#>   title = {{cffr}: Generate Citation File Format Metadata for {R} Packages},
#>   journal = {Journal of Open Source Software},
#> }

as_cff(a_cit)
#> - type: article
#>   title: 'cffr: Generate Citation File Format Metadata for R Packages'
#>   authors:
#>   - family-names: Hernangómez
#>     given-names: Diego
#>   doi: 10.21105/joss.03900
#>   url: https://doi.org/10.21105/joss.03900
#>   year: '2021'
#>   publisher:
#>     name: The Open Journal
#>   volume: '6'
#>   issue: '67'
#>   journal: Journal of Open Source Software
#>   start: '3900'