schema-dts-gen/dist/src/triples/reader.js

Generate TypeScript Definitions for Schema.org Schema

var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
    return new (P || (P = Promise))(function (resolve, reject) {
        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
        step((generator = generator.apply(thisArg, _arguments || [])).next());
    });
};
/**
 * Copyright 2023 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
import https from 'https';
import fs from 'fs/promises';
import { Log } from '../logging/index.js';
import { Parser, Store } from 'n3';
function asQuads(data) {
    return new Parser({}).parse(data);
}
/**
 * Loads schema all Triples from a given Schema file and version.
 */
export function load(url) {
    return __awaiter(this, void 0, void 0, function* () {
        const quads = yield handleUrl(url);
        return process(quads);
    });
}
/**
 * does the same as load(), but for a local file
 */
export function loadFile(path) {
    return __awaiter(this, void 0, void 0, function* () {
        const quads = yield handleFile(path);
        return process(quads);
    });
}
function handleFile(path) {
    return __awaiter(this, void 0, void 0, function* () {
        const fileStr = yield fs.readFile(path, { encoding: 'utf8' });
        return asQuads(fileStr);
    });
}
function handleUrl(url) {
    return new Promise((resolve, reject) => {
        https
            .get(url, response => {
            Log(`Got Response ${response.statusCode}: ${response.statusMessage}.`);
            if (response.statusCode !== 200) {
                const location = response.headers['location'] ||
                    response.headers['content-location'];
                if (location) {
                    Log(`Handling redirect to ${location}...`);
                    resolve(handleUrl(location));
                    return;
                }
                reject(new Error(`Got Errored Response ${response.statusCode}: ${response.statusMessage}.`));
                return;
            }
            const data = [];
            response.on('data', (chunkB) => {
                const chunk = chunkB.toString('utf-8');
                data.push(chunk);
            });
            response.on('end', () => {
                try {
                    resolve(asQuads(data.join('')));
                }
                catch (error) {
                    Log(`Caught Error on end: ${error}`);
                    reject(error);
                }
            });
            response.on('error', error => {
                Log(`Saw error: ${error}`);
                reject(error);
            });
        })
            .on('error', reject);
    });
}
export function process(quads) {
    const filtered = quads.filter(quad => {
        if (quad.subject.termType === 'NamedNode' &&
            quad.subject.value.includes('file:///')) {
            // Inexplicably, local files end up in the public schema for
            // certain layer overlays.
            return false;
        }
        return true;
    });
    return new Store(filtered);
}
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