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- // src/serve-static.ts
- import { getMimeType } from "hono/utils/mime";
- import { createReadStream, statSync, existsSync } from "fs";
- import { join } from "path";
- import { versions } from "process";
- import { Readable } from "stream";
- var COMPRESSIBLE_CONTENT_TYPE_REGEX = /^\s*(?:text\/[^;\s]+|application\/(?:javascript|json|xml|xml-dtd|ecmascript|dart|postscript|rtf|tar|toml|vnd\.dart|vnd\.ms-fontobject|vnd\.ms-opentype|wasm|x-httpd-php|x-javascript|x-ns-proxy-autoconfig|x-sh|x-tar|x-virtualbox-hdd|x-virtualbox-ova|x-virtualbox-ovf|x-virtualbox-vbox|x-virtualbox-vdi|x-virtualbox-vhd|x-virtualbox-vmdk|x-www-form-urlencoded)|font\/(?:otf|ttf)|image\/(?:bmp|vnd\.adobe\.photoshop|vnd\.microsoft\.icon|vnd\.ms-dds|x-icon|x-ms-bmp)|message\/rfc822|model\/gltf-binary|x-shader\/x-fragment|x-shader\/x-vertex|[^;\s]+?\+(?:json|text|xml|yaml))(?:[;\s]|$)/i;
- var ENCODINGS = {
- br: ".br",
- zstd: ".zst",
- gzip: ".gz"
- };
- var ENCODINGS_ORDERED_KEYS = Object.keys(ENCODINGS);
- var pr54206Applied = () => {
- const [major, minor] = versions.node.split(".").map((component) => parseInt(component));
- return major >= 23 || major === 22 && minor >= 7 || major === 20 && minor >= 18;
- };
- var useReadableToWeb = pr54206Applied();
- var createStreamBody = (stream) => {
- if (useReadableToWeb) {
- return Readable.toWeb(stream);
- }
- const body = new ReadableStream({
- start(controller) {
- stream.on("data", (chunk) => {
- controller.enqueue(chunk);
- });
- stream.on("error", (err) => {
- controller.error(err);
- });
- stream.on("end", () => {
- controller.close();
- });
- },
- cancel() {
- stream.destroy();
- }
- });
- return body;
- };
- var getStats = (path) => {
- let stats;
- try {
- stats = statSync(path);
- } catch {
- }
- return stats;
- };
- var tryDecode = (str, decoder) => {
- try {
- return decoder(str);
- } catch {
- return str.replace(/(?:%[0-9A-Fa-f]{2})+/g, (match) => {
- try {
- return decoder(match);
- } catch {
- return match;
- }
- });
- }
- };
- var tryDecodeURI = (str) => tryDecode(str, decodeURI);
- var serveStatic = (options = { root: "" }) => {
- const root = options.root || "";
- const optionPath = options.path;
- if (root !== "" && !existsSync(root)) {
- console.error(`serveStatic: root path '${root}' is not found, are you sure it's correct?`);
- }
- return async (c, next) => {
- if (c.finalized) {
- return next();
- }
- let filename;
- if (optionPath) {
- filename = optionPath;
- } else {
- try {
- filename = tryDecodeURI(c.req.path);
- if (/(?:^|[\/\\])\.{1,2}(?:$|[\/\\])|[\/\\]{2,}/.test(filename)) {
- throw new Error();
- }
- } catch {
- await options.onNotFound?.(c.req.path, c);
- return next();
- }
- }
- let path = join(
- root,
- !optionPath && options.rewriteRequestPath ? options.rewriteRequestPath(filename, c) : filename
- );
- let stats = getStats(path);
- if (stats && stats.isDirectory()) {
- const indexFile = options.index ?? "index.html";
- path = join(path, indexFile);
- stats = getStats(path);
- }
- if (!stats) {
- await options.onNotFound?.(path, c);
- return next();
- }
- const mimeType = getMimeType(path);
- c.header("Content-Type", mimeType || "application/octet-stream");
- if (options.precompressed && (!mimeType || COMPRESSIBLE_CONTENT_TYPE_REGEX.test(mimeType))) {
- const acceptEncodingSet = new Set(
- c.req.header("Accept-Encoding")?.split(",").map((encoding) => encoding.trim())
- );
- for (const encoding of ENCODINGS_ORDERED_KEYS) {
- if (!acceptEncodingSet.has(encoding)) {
- continue;
- }
- const precompressedStats = getStats(path + ENCODINGS[encoding]);
- if (precompressedStats) {
- c.header("Content-Encoding", encoding);
- c.header("Vary", "Accept-Encoding", { append: true });
- stats = precompressedStats;
- path = path + ENCODINGS[encoding];
- break;
- }
- }
- }
- let result;
- const size = stats.size;
- const range = c.req.header("range") || "";
- if (c.req.method == "HEAD" || c.req.method == "OPTIONS") {
- c.header("Content-Length", size.toString());
- c.status(200);
- result = c.body(null);
- } else if (!range) {
- c.header("Content-Length", size.toString());
- result = c.body(createStreamBody(createReadStream(path)), 200);
- } else {
- c.header("Accept-Ranges", "bytes");
- c.header("Date", stats.birthtime.toUTCString());
- const parts = range.replace(/bytes=/, "").split("-", 2);
- const start = parseInt(parts[0], 10) || 0;
- let end = parseInt(parts[1], 10) || size - 1;
- if (size < end - start + 1) {
- end = size - 1;
- }
- const chunksize = end - start + 1;
- const stream = createReadStream(path, { start, end });
- c.header("Content-Length", chunksize.toString());
- c.header("Content-Range", `bytes ${start}-${end}/${stats.size}`);
- result = c.body(createStreamBody(stream), 206);
- }
- await options.onFound?.(path, c);
- return result;
- };
- };
- export {
- serveStatic
- };
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