firebase-tools
Version:
Command-Line Interface for Firebase
46 lines (45 loc) • 2.01 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.sendFileBytes = void 0;
const zlib_1 = require("zlib");
const crc_1 = require("../crc");
const rfc_1 = require("../rfc");
function sendFileBytes(md, data, req, res) {
let didGunzip = false;
if (md.contentEncoding === "gzip") {
const acceptEncoding = req.header("accept-encoding") || "";
const shouldGunzip = !acceptEncoding.includes("gzip");
if (shouldGunzip) {
data = (0, zlib_1.gunzipSync)(data);
didGunzip = true;
}
}
res.setHeader("Accept-Ranges", "bytes");
res.setHeader("Content-Type", md.contentType || "application/octet-stream");
const fileName = md.name.split("/").pop();
res.setHeader("Content-Disposition", `${md.contentDisposition || "attachment"}; filename*=${(0, rfc_1.encodeRFC5987)(fileName)}`);
if (didGunzip) {
res.setHeader("Transfer-Encoding", "chunked");
}
else {
res.setHeader("Content-Encoding", md.contentEncoding || "");
}
res.setHeader("ETag", md.etag);
res.setHeader("Cache-Control", md.cacheControl || "");
res.setHeader("x-goog-generation", `${md.generation}`);
res.setHeader("x-goog-metadatageneration", `${md.metageneration}`);
res.setHeader("x-goog-storage-class", md.storageClass);
res.setHeader("x-goog-hash", `crc32c=${(0, crc_1.crc32cToString)(md.crc32c)},md5=${md.md5Hash}`);
const shouldRespectContentRange = !didGunzip;
if (shouldRespectContentRange) {
const byteRange = req.range(data.byteLength, { combine: true });
if (Array.isArray(byteRange) && byteRange.type === "bytes" && byteRange.length > 0) {
const range = byteRange[0];
res.setHeader("Content-Range", `${byteRange.type} ${range.start}-${range.end}/${data.byteLength}`);
res.status(206).end(data.slice(range.start, range.end + 1));
return;
}
}
res.end(data);
}
exports.sendFileBytes = sendFileBytes;