62 lines
2.4 KiB
Plaintext
62 lines
2.4 KiB
Plaintext
import { tryDecodeURI } from "../../utils/url.js";
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import { COMPRESSIBLE_CONTENT_TYPE_REGEX } from "../../utils/compress.js";
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import { getMimeType } from "../../utils/mime.js";
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import { defaultJoin } from "./path.js";
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//#region src/middleware/serve-static/index.ts
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const ENCODINGS = {
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br: ".br",
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zstd: ".zst",
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gzip: ".gz"
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};
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const ENCODINGS_ORDERED_KEYS = Object.keys(ENCODINGS);
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const DEFAULT_DOCUMENT = "index.html";
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/**
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* This middleware is not directly used by the user. Create a wrapper specifying `getContent()` by the environment such as Deno or Bun.
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*/
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const serveStatic = (options) => {
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const root = options.root ?? "./";
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const optionPath = options.path;
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const join = options.join ?? defaultJoin;
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return async (c, next) => {
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if (c.finalized) return next();
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let filename;
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if (options.path) filename = options.path;
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else try {
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if (!options.allowPercentInPath && c.req.path.includes("%")) throw new Error();
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filename = tryDecodeURI(c.req.path);
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if (/(?:^|[\/\\])\.{1,2}(?:$|[\/\\])|[\/\\]{2,}|\\/.test(filename)) throw new Error();
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} catch {
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await options.onNotFound?.(c.req.path, c);
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return next();
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}
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let path = join(root, !optionPath && options.rewriteRequestPath ? options.rewriteRequestPath(filename) : filename);
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if (options.isDir && await options.isDir(path)) path = join(path, DEFAULT_DOCUMENT);
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const getContent = options.getContent;
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let content = await getContent(path, c);
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if (content instanceof Response) return c.newResponse(content.body, content);
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if (content != null) {
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const mimeType = options.mimes && getMimeType(path, options.mimes) || getMimeType(path);
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c.header("Content-Type", mimeType || "application/octet-stream");
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if (options.precompressed && (!mimeType || COMPRESSIBLE_CONTENT_TYPE_REGEX.test(mimeType))) {
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const acceptEncodingSet = new Set(c.req.header("Accept-Encoding")?.split(",").map((encoding) => encoding.trim()));
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for (const encoding of ENCODINGS_ORDERED_KEYS) {
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if (!acceptEncodingSet.has(encoding)) continue;
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const compressedContent = await getContent(path + ENCODINGS[encoding], c);
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if (compressedContent) {
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content = compressedContent;
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c.header("Content-Encoding", encoding);
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c.header("Vary", "Accept-Encoding", { append: true });
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break;
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}
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}
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}
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await options.onFound?.(path, c);
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return c.body(content);
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}
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await options.onNotFound?.(path, c);
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await next();
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};
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};
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//#endregion
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export { serveStatic };
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