parse-latin

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A Latin-script language parser for [retext][retext] producing [nlcst][]
nodes.

Whether Old-English (“þā gewearþ þǣm hlāforde and þǣm hȳrigmannum wiþ ānum
penninge”), Icelandic (“Hvað er að frétta”), French (“Où sont les toilettes?”),
parse-latin does a good job at tokenizing it.

Note also that parse-latin does a decent job at tokenizing Latin-like scripts,
Cyrillic (“Добро пожаловать!”), Georgian (“როგორა ხარ?”), Armenian (“Շատ հաճելի
է”), and such.

Install

This package is ESM only: Node 12+ is needed to use it and it must be imported
instead of required.

[npm][]:

``sh
npm install parse-latin
`

Use

`js
import inspect from 'unist-util-inspect'
import {ParseLatin} from 'parse-latin'

var tree = new ParseLatin().parse('A simple sentence.')

console.log(inspect(tree))
`

Which, when inspecting, yields:

`txt
RootNode[1] (1:1-1:19, 0-18)
└─ ParagraphNode[1] (1:1-1:19, 0-18)
└─ SentenceNode[6] (1:1-1:19, 0-18)
├─ WordNode[1] (1:1-1:2, 0-1)
│ └─ TextNode: "A" (1:1-1:2, 0-1)
├─ WhiteSpaceNode: " " (1:2-1:3, 1-2)
├─ WordNode[1] (1:3-1:9, 2-8)
│ └─ TextNode: "simple" (1:3-1:9, 2-8)
├─ WhiteSpaceNode: " " (1:9-1:10, 8-9)
├─ WordNode[1] (1:10-1:18, 9-17)
│ └─ TextNode: "sentence" (1:10-1:18, 9-17)
└─ PunctuationNode: "." (1:18-1:19, 17-18)
`

API

This package exports the following identifiers: ParseLatin.
There is no default export.

$3

Exposes the functionality needed to tokenize natural Latin-script languages into
a syntax tree.
If value is passed here, it’s not needed to give it to #parse().

#### ParseLatin#tokenize(value)

Tokenize value (string) into letters and numbers (words), white space, and
everything else (punctuation).
The returned nodes are a flat list without paragraphs or sentences.

###### Returns

[Array.][nlcst] — Nodes.

#### ParseLatin#parse(value)

Tokenize value (string) into an [NLCST][] tree.
The returned node is a RootNode with in it paragraphs and sentences.

###### Returns

[Node][nlcst] — Root node.

Algorithm

> Note: The easiest way to see how parse-latin tokenizes and parses, is by
> using the [online parser demo][demo], which
> shows the syntax tree corresponding to the typed text.

parse-latin splits text into white space, word, and punctuation tokens.
parse-latin starts out with a pretty easy definition, one that most other
tokenizers use:

* A “word” is one or more letter or number characters
* A “white space” is one or more white space characters
* A “punctuation” is one or more of anything else

Then, it manipulates and merges those tokens into a ([nlcst][]) syntax tree,
adding sentences and paragraphs where needed.

* Some punctuation marks are part of the word they occur in, such as
non-profit, she’s, G.I., 11:00, N/A, &c, nineteenth- and…
* Some full-stops do not mark a sentence end, such as 1., e.g., id.
* Although full-stops, question marks, and exclamation marks (sometimes) end a
sentence, that end might not occur directly after the mark, such as .),
."`
* And many more exceptions

License

[MIT][license] © [Titus Wormer][author]

[build-badge]: https://github.com/wooorm/parse-latin/workflows/main/badge.svg

[build]: https://github.com/wooorm/parse-latin/actions

[coverage-badge]: https://img.shields.io/codecov/c/github/wooorm/parse-latin.svg

[coverage]: https://codecov.io/github/wooorm/parse-latin

[downloads-badge]: https://img.shields.io/npm/dm/parse-latin.svg

[downloads]: https://www.npmjs.com/package/parse-latin

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[size]: https://bundlephobia.com/result?p=parse-latin

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[chat]: https://spectrum.chat/unified/retext

[npm]: https://docs.npmjs.com/cli/install

[demo]: https://wooorm.com/parse-latin/

[license]: license

[author]: https://wooorm.com

[retext]: https://github.com/retextjs/retext

[nlcst]: https://github.com/syntax-tree/nlcst