File size: 2,568 Bytes
7105d63 2c1d035 5fa3433 ebf63b4 5fa3433 ebf63b4 7105d63 5fa3433 7105d63 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 | (function () {
"use strict";
const params = new URLSearchParams(location.search);
let pdf = params.get("ext")?.toLowerCase() === "pdf";
try { pdf ||= new URL(params.get("url")).pathname.toLowerCase().endsWith(".pdf"); } catch (_) {}
const base = new URL("../../", document.currentScript.src).href;
const extension = pdf ? "pdf" : (params.get("ext") || "").toLowerCase();
const suffix = new URL(base).pathname.startsWith("/search/") ? "?reader-v1" : "";
const workerWrapper = new URL("./pdf-worker-wrapper.mjs", document.currentScript.src).href;
const assets = VoiceOfMLReaderResources.engineAssets(pdf ? "pdf" : extension, base, suffix, workerWrapper);
// PDF.js loads its small ICC color engine synchronously in the Worker. Warm
// only those pinned bytes; actual color conversion and Worker creation remain
// document-owned, with exactly the same engine/quality and no book prefetch.
const support = [];
if (pdf) {
support.push(workerWrapper);
if (!navigator.connection?.saveData) support.push(...VoiceOfMLReaderResources.pdfSupportAssets(base));
const controller = new AbortController();
const dispose = () => controller.abort();
const timer = setTimeout(dispose, 8000);
addEventListener("pagehide", dispose, {once:true});
addEventListener("voice-reader-dispose", dispose, {once:true});
// Worker entry scripts and synchronous ICC XHR use no Origin header. A
// crossorigin link preload has a different Vary: Origin cache identity on
// HF, so warm these bytes with the same-origin fetch identity instead.
Promise.allSettled(support.map(href => fetch(href, {
mode:"same-origin", credentials:"same-origin", signal:controller.signal
}).then(response => {
if (!response.ok) { response.body?.cancel().catch(() => {}); return; }
return VoiceOfMLReaderSecurity.readBytes(response, 1024 * 1024);
}))).finally(() => {
clearTimeout(timer);
removeEventListener("pagehide", dispose);
removeEventListener("voice-reader-dispose", dispose);
});
}
// Fetch/compile bytes only. The Reader still owns engine execution, source
// validation and rendering; no book body is speculatively downloaded here.
for (const href of assets) {
if (support.includes(href)) continue;
const link = document.createElement("link");
link.rel = /\.mjs(?:\?|$)/.test(href) || href.includes("/foliate-reader/") ? "modulepreload" : "preload";
if (link.rel === "preload") link.as = "script";
link.href = href;
document.head.appendChild(link);
}
})();
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