@zazuko/rdf-utils-fs/fromFile.js

RDF/JS file system utils

import { createReadStream } from 'fs';
import { extname } from 'path';
import url from 'url';
import defaults from './defaults.js';
export default function fromFile(env, pathOrUrl, { implicitBaseIRI, extensions = {}, ...options } = {}) {
    const combinedExtensions = {
        ...defaults.extensions,
        ...extensions,
    };
    let baseIRI;
    if (implicitBaseIRI) {
        baseIRI = typeof pathOrUrl === 'string' ? url.pathToFileURL(pathOrUrl).toString() : pathOrUrl.toString();
    }
    const filename = typeof pathOrUrl === 'string' ? pathOrUrl : url.fileURLToPath(pathOrUrl);
    const extension = extname(filename).split('.').pop();
    const mediaType = combinedExtensions[extension];
    if (!mediaType) {
        throw new Error(`Unknown file extension: ${extension}`);
    }
    // eslint-disable-next-line @typescript-eslint/no-explicit-any
    const parser = env.formats.parsers.get(mediaType);
    if (!parser) {
        throw new Error(`No parser available for media type: ${mediaType}`);
    }
    return parser.import(createReadStream(filename), {
        baseIRI,
        ...options,
        factory: env,
        dataFactory: env,
    });
}