web-annotation-discovery-server/routes

// Copyright (c) 2020 Jan Kaßel
// Copyright (c) 2022 Gerben
//
// SPDX-License-Identifier: MIT

import { randomBytes } from 'crypto';
import type { Level } from 'level';

export function generateKey(length = 16) {
  return randomBytes(length).toString('hex');
}

export async function getPrefixedEntries(db: Level<string, any>, prefix: string, shallow?: boolean) {
  const entries: [string, any][] = [];
  for await (const entry of db.iterator({ gt: prefix })) {
    if (!entry[0].startsWith(prefix)) break;
    if (shallow && entry[0].slice(prefix.length).includes('/')) continue;
    entries.push(entry);
  }
  return entries;
}

export function escapeHtml(s: string) {
  return s
    .replace('<', '&lt;')
    .replace('>', '&gt;')
    .replace('&', '&amp;')
    .replace('"', '&quot;')
    .replace("'", '&apos;');
}