mirror of
https://github.com/swc-project/swc.git
synced 2024-12-30 17:15:11 +03:00
81 lines
2.4 KiB
TypeScript
81 lines
2.4 KiB
TypeScript
// Loaded from https://deno.land/x/tinyhttp@0.1.18/extensions/res/send/sendFile.ts
|
|
|
|
|
|
import { Req, Res } from '../../../deps.ts'
|
|
import { isAbsolute, join, extname } from 'https://deno.land/std@0.101.0/path/mod.ts'
|
|
import { contentType } from '../../../deps.ts'
|
|
import { createETag } from '../utils.ts'
|
|
import { send } from './send.ts'
|
|
|
|
export type SendFileOptions = Partial<{
|
|
root: string
|
|
headers: Record<string, string>
|
|
encoding: string
|
|
end: number
|
|
start: number
|
|
}> &
|
|
Deno.OpenOptions
|
|
|
|
/**
|
|
* Sends a file by piping a stream to response.
|
|
*
|
|
* It also checks for extension to set a proper `Content-Type` header.
|
|
*
|
|
* Path argument must be absolute. To use a relative path, specify the `root` option first.
|
|
*
|
|
* @param res Response
|
|
*/
|
|
export const sendFile =
|
|
<Request extends Req = Req, Response extends Res = Res>(req: Request, res: Response) =>
|
|
(path: string, opts: SendFileOptions = {}) => {
|
|
const { root, headers = {}, encoding = 'utf-8', ...options } = opts
|
|
|
|
if (!isAbsolute(path) && !root) throw new TypeError('path must be absolute')
|
|
|
|
const filePath = root ? join(root, path) : path
|
|
|
|
const stats = Deno.statSync(filePath)
|
|
|
|
headers['Content-Encoding'] = encoding
|
|
|
|
headers['Last-Modified'] = stats.mtime!.toUTCString()
|
|
|
|
headers['Content-Type'] = contentType(extname(path)) || 'text/html'
|
|
|
|
headers['ETag'] = createETag(stats)
|
|
|
|
headers['Content-Length'] = `${stats.size}`
|
|
|
|
headers['Content-Security-Policy'] = "default-src 'none'"
|
|
headers['X-Content-Type-Options'] = 'nosniff'
|
|
|
|
let status = 200
|
|
|
|
if (req.headers.get('range')) {
|
|
status = 206
|
|
const [x, y] = req.headers?.get('range')?.replace('bytes=', '').split('-') as [string, string]
|
|
const end = (options.end = parseInt(y, 10) || stats.size - 1)
|
|
const start = (options.start = parseInt(x, 10) || 0)
|
|
|
|
if (start >= stats.size || end >= stats.size) {
|
|
res.status = 416
|
|
res.headers?.set('Content-Range', `bytes */${stats.size}`)
|
|
req.respond({})
|
|
return res
|
|
}
|
|
headers['Content-Range'] = `bytes ${start}-${end}/${stats.size}`
|
|
headers['Content-Length'] = `${end - start + 1}`
|
|
headers['Accept-Ranges'] = 'bytes'
|
|
}
|
|
|
|
for (const [k, v] of Object.entries(headers)) res.headers?.set(k, v)
|
|
|
|
res.status = status
|
|
|
|
const file = Deno.openSync(filePath, { read: true, ...options })
|
|
|
|
send(req, res)(file)
|
|
|
|
return res
|
|
}
|