linguist-js/dist/program/classes/attributes.js

Analyse the programming languages used in a folder or from raw content, using the same rules that GitHub Linguist does.

import ignore from 'ignore';
/** Stores parsed attribute information per file glob */
export default class Attributes {
    #attributes;
    constructor() {
        this.#attributes = {};
    }
    get attributes() {
        return this.#attributes;
    }
    add(glob, attributes) {
        this.#attributes[glob] = attributes;
    }
    getFlaggedGlobs(attr, val) {
        return Object.entries(this.#attributes)
            .filter(([, attrs]) => attrs[attr] === val)
            .map(([glob]) => glob);
    }
    findAttrsForPath(relFilePath) {
        const resultAttrs = {};
        for (const glob in this.#attributes) {
            const matchingAttrs = this.#attributes[glob];
            // Check if glob matches rel path
            if (ignore().add(glob).ignores(relFilePath)) {
                for (const [attr, val] of Object.entries(matchingAttrs)) {
                    if (val != null) {
                        resultAttrs[attr] = val;
                    }
                }
            }
        }
        if (!JSON.stringify(resultAttrs).length) {
            return null;
        }
        return resultAttrs;
    }
}