retext-directionality

retext directionality detection.

Installation

npm:

npm install retext-directionality

retext-directionality is also available for bower, component, and duo, and as an AMD, CommonJS, and globals module, uncompressed and compressed.

Usage

var retext = require('retext');
var inspect = require('unist-util-inspect');
var direction = require('retext-directionality');

retext().use(direction).use(function () {
    return function (cst) {
        console.log(inspect(cst));
    };
}).process('A simple, Anglais, بسيطة.');

Yields:

RootNode[1] [data={"direction":"neutral"}]
└─ ParagraphNode[1] [data={"direction":"neutral"}]
   └─ SentenceNode[10] [data={"direction":"neutral"}]
      ├─ WordNode[1] [data={"direction":"ltr"}]
      │  └─ TextNode: 'A' [data={"direction":"ltr"}]
      ├─ WhiteSpaceNode: ' ' [data={"direction":"neutral"}]
      ├─ WordNode[1] [data={"direction":"ltr"}]
      │  └─ TextNode: 'simple' [data={"direction":"ltr"}]
      ├─ PunctuationNode: ',' [data={"direction":"neutral"}]
      ├─ WhiteSpaceNode: ' ' [data={"direction":"neutral"}]
      ├─ WordNode[1] [data={"direction":"ltr"}]
      │  └─ TextNode: 'Anglais' [data={"direction":"ltr"}]
      ├─ PunctuationNode: ',' [data={"direction":"neutral"}]
      ├─ WhiteSpaceNode: ' ' [data={"direction":"neutral"}]
      ├─ WordNode[1] [data={"direction":"rtl"}]
      │  └─ TextNode: 'بسيطة' [data={"direction":"rtl"}]
      └─ PunctuationNode: '.' [data={"direction":"neutral"}]

API

None, retext-directionality automatically detects the direction of each Text (using wooorm/direction), either "ltr", "rtl", or "neutral"), and stores the direction in node.data.direction.

All parents (such as words, sentences, paragraphs, root) also receive a direction property (parent.data.direction): If every Text inside a parent has the same (or neutral) direction, the parent has the same direction, otherwise, the parent has a neutral direction.

License

MIT © Titus Wormer