@citation-js/plugin-bibtex

Plugin for BibTeX formats for Citation.js.

Install

npm install @citation-js/plugin-bibtex

Usage

Register by importing the package:

require('@citation-js/plugin-bibtex')

Formats

Formats and other features added by this plugin.

BibTeX

This plugin adds input and output support for BibTeX, both in text form and as a JSON representation. Input types are called @bibtex/text and @bibtex/entry+object, output format is bibtex. The output has format dictionary support.

BibLaTeX

This plugin adds input and output support for BibLaTeX, both in text form and as a JSON representation. Input types are called @biblatex/text and @biblatex/entry+object, output format is biblatex. The output has format dictionary support.

Bib.TXT

This plugin adds input and output support for Bib.TXT, a simplified and modernised version of BibTeX. Input types are called @bibtxt/text and @biblatex/entry+object, output format is bibtxt. The output has format dictionary support.

Configuration

Configuration can be accessed like the following:

const { plugins } = require('@citation-js/core')
const config = plugins.config.get('@bibtex')

Property	Values [default]	Description
config.parse.strict	true, [false]	When true, entries are checked for required fields.
config.parse.sentenceCase	'always', 'english', ['never']	Convert titles to sentence case when parsing.
config.format.useIdAsLabel	true, [false]	Use the entry ID as the label instead of generating one.
config.format.checkLabel	[true], false	Remove unsafe characters from the provided label (or ID).
config.format.asciiOnly	[true], false	Escape or remove non-ASCII characters.

Type mappings

Entry type mappings between BibLaTeX or BibTeX and CSL-JSON are available through config.types.biblatex and config.types.bibtex. In both cases, the Bib(La)TeX mappings are in the source field and the reverse mappings in the target field.

config.types.biblatex.source.inproceedings = 'paper-conference'
config.types.biblatex.target['paper-conference'] = 'inproceedings'

Required types

The list of required fields for each type for BibLaTeX and BibTeX is available under config.required.biblatex and config.required.bibtex respectively. In both cases, the list consists of strings for required fields and arrays for sets of fields where at least one should be present (year OR date for BibLaTeX for example).

config.required.biblatex.book = [
  'title',
  ['author', 'editor'],
  'publisher',
  ['year', 'date']
]

Field types

Field types (used for both BibLaTeX and BibTeX) are available through config.constants.fieldTypes. This returns an object mapping Bib(La)TeX field names to an array containing a field type and a value type. The former is either field, list (" and "-delimited), or separated (comma-delimited). As for the latter:

Value type	Description
literal	Normal text or numeric content
title	Like literal but can be affected by config.parse.sentenceCase
name	A personal or organizational name
date	An EDTF Level 1 date
verbatim	Unaltered text (no expansion of commands, etc.)
uri	Same as verbatim but if needed the URL is encoded
other	No special behaviour, treated like literal

// Add `daturl` for dat:// URLs
config.constants.fieldTypes.daturl = ['field', 'uri']
// Do not treat `publisher` as a list
config.constants.fieldTypes.publisher = ['field', 'literal']

Unicode

• config.constants.diacritics maps commands (\") to diacritics
• config.constants.commands maps commands (\textinterrobangdown) to general unicode characters (⸘)
• config.constants.ligatures maps non-command character sequences (---, ~, etc.) to their replacements (emdash, no-breaking space, etc.)
• config.constants.ligaturePattern is a RegExp that recognizes the ligatures mapped above
• config.constants.mathScripts maps superscript and subscript (in properties ^ and _ respectively)

config.constants.diacritics['"'] = '\u0308'
config.constants.commands.textinterrobangdown = '⸘'
config.constants.ligatures = {
  '---': '\u2014',
  '~': '\u00A0'
}
config.constants.ligaturePattern = /---|~/g // Don't forget the (g)lobal flag
config.constants.mathScripts = {
  '^': { '1': '¹' },
  '_': { '1': '₁' }
}

Formatting

• config.constants.formattingEnvs maps environment commands to formatting
• config.constants.formattingCommands maps regular commands to formatting
• config.constants.mathScriptFormatting maps ^ and _ to resp. super- and subscript
• config.constants.formatting maps formatting to HTML (though RTF or Markdown could be substituted)

config.constants.formattingEnvs.bf = 'bold'
config.constants.formattingCommands.textbf = 'bold'
config.constants.mathScriptFormatting['^'] = 'superscript'
config.constants.formatting = {
  bold: ['<b>', '</b>'],
  superscript: ['<sup>', '</sup>']
}

Other commands

The object config.constants.argumentCommands maps command names to functions handling them. This does not include commands used above. Braced arguments are parsed automatically based on how many arguments the function takes. It does not support optional arguments (i.e. those in square braces) yet.

config.constants.argumentCommands.href = function (url, displayText) {
  // Note: <a> tags are not supported by CSL so watch out if you use this
  return `<a href="${url}">${displayText}</a>`
}

// You can also use it to replace commands that produce text
config.constants.argumentCommands.LaTeX = () => 'LaTeX'

English languages

The array config.constants.sentenceCaseLanguages affects which languages are eligible for sentence-casing when config.parse.sentenceCase is set to 'english'. All entries should be lowercase.

config.constants.sentenceCaseLanguages = [
  'english',
  'en-us',
  'en-gb'
]

Replacement strings

The object config.constants.defaultStrings determines which strings are defined by default.

config.constants.defaultStrings.larsgw = "Willighagen, Lars G"