You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
142 lines
5.0 KiB
142 lines
5.0 KiB
# content-disposition
|
|
|
|
[![NPM Version][npm-image]][npm-url]
|
|
[![NPM Downloads][downloads-image]][downloads-url]
|
|
[![Node.js Version][node-version-image]][node-version-url]
|
|
[![Build Status][travis-image]][travis-url]
|
|
[![Test Coverage][coveralls-image]][coveralls-url]
|
|
|
|
Create and parse HTTP `Content-Disposition` header
|
|
|
|
## Installation
|
|
|
|
```sh
|
|
$ npm install content-disposition
|
|
```
|
|
|
|
## API
|
|
|
|
```js
|
|
var contentDisposition = require('content-disposition')
|
|
```
|
|
|
|
### contentDisposition(filename, options)
|
|
|
|
Create an attachment `Content-Disposition` header value using the given file name,
|
|
if supplied. The `filename` is optional and if no file name is desired, but you
|
|
want to specify `options`, set `filename` to `undefined`.
|
|
|
|
```js
|
|
res.setHeader('Content-Disposition', contentDisposition('∫ maths.pdf'))
|
|
```
|
|
|
|
**note** HTTP headers are of the ISO-8859-1 character set. If you are writing this
|
|
header through a means different from `setHeader` in Node.js, you'll want to specify
|
|
the `'binary'` encoding in Node.js.
|
|
|
|
#### Options
|
|
|
|
`contentDisposition` accepts these properties in the options object.
|
|
|
|
##### fallback
|
|
|
|
If the `filename` option is outside ISO-8859-1, then the file name is actually
|
|
stored in a supplemental field for clients that support Unicode file names and
|
|
a ISO-8859-1 version of the file name is automatically generated.
|
|
|
|
This specifies the ISO-8859-1 file name to override the automatic generation or
|
|
disables the generation all together, defaults to `true`.
|
|
|
|
- A string will specify the ISO-8859-1 file name to use in place of automatic
|
|
generation.
|
|
- `false` will disable including a ISO-8859-1 file name and only include the
|
|
Unicode version (unless the file name is already ISO-8859-1).
|
|
- `true` will enable automatic generation if the file name is outside ISO-8859-1.
|
|
|
|
If the `filename` option is ISO-8859-1 and this option is specified and has a
|
|
different value, then the `filename` option is encoded in the extended field
|
|
and this set as the fallback field, even though they are both ISO-8859-1.
|
|
|
|
##### type
|
|
|
|
Specifies the disposition type, defaults to `"attachment"`. This can also be
|
|
`"inline"`, or any other value (all values except inline are treated like
|
|
`attachment`, but can convey additional information if both parties agree to
|
|
it). The type is normalized to lower-case.
|
|
|
|
### contentDisposition.parse(string)
|
|
|
|
```js
|
|
var disposition = contentDisposition.parse('attachment; filename="EURO rates.txt"; filename*=UTF-8\'\'%e2%82%ac%20rates.txt');
|
|
```
|
|
|
|
Parse a `Content-Disposition` header string. This automatically handles extended
|
|
("Unicode") parameters by decoding them and providing them under the standard
|
|
parameter name. This will return an object with the following properties (examples
|
|
are shown for the string `'attachment; filename="EURO rates.txt"; filename*=UTF-8\'\'%e2%82%ac%20rates.txt'`):
|
|
|
|
- `type`: The disposition type (always lower case). Example: `'attachment'`
|
|
|
|
- `parameters`: An object of the parameters in the disposition (name of parameter
|
|
always lower case and extended versions replace non-extended versions). Example:
|
|
`{filename: "€ rates.txt"}`
|
|
|
|
## Examples
|
|
|
|
### Send a file for download
|
|
|
|
```js
|
|
var contentDisposition = require('content-disposition')
|
|
var destroy = require('destroy')
|
|
var http = require('http')
|
|
var onFinished = require('on-finished')
|
|
|
|
var filePath = '/path/to/public/plans.pdf'
|
|
|
|
http.createServer(function onRequest(req, res) {
|
|
// set headers
|
|
res.setHeader('Content-Type', 'application/pdf')
|
|
res.setHeader('Content-Disposition', contentDisposition(filePath))
|
|
|
|
// send file
|
|
var stream = fs.createReadStream(filePath)
|
|
stream.pipe(res)
|
|
onFinished(res, function (err) {
|
|
destroy(stream)
|
|
})
|
|
})
|
|
```
|
|
|
|
## Testing
|
|
|
|
```sh
|
|
$ npm test
|
|
```
|
|
|
|
## References
|
|
|
|
- [RFC 2616: Hypertext Transfer Protocol -- HTTP/1.1][rfc-2616]
|
|
- [RFC 5987: Character Set and Language Encoding for Hypertext Transfer Protocol (HTTP) Header Field Parameters][rfc-5987]
|
|
- [RFC 6266: Use of the Content-Disposition Header Field in the Hypertext Transfer Protocol (HTTP)][rfc-6266]
|
|
- [Test Cases for HTTP Content-Disposition header field (RFC 6266) and the Encodings defined in RFCs 2047, 2231 and 5987][tc-2231]
|
|
|
|
[rfc-2616]: https://tools.ietf.org/html/rfc2616
|
|
[rfc-5987]: https://tools.ietf.org/html/rfc5987
|
|
[rfc-6266]: https://tools.ietf.org/html/rfc6266
|
|
[tc-2231]: http://greenbytes.de/tech/tc2231/
|
|
|
|
## License
|
|
|
|
[MIT](LICENSE)
|
|
|
|
[npm-image]: https://img.shields.io/npm/v/content-disposition.svg?style=flat
|
|
[npm-url]: https://npmjs.org/package/content-disposition
|
|
[node-version-image]: https://img.shields.io/node/v/content-disposition.svg?style=flat
|
|
[node-version-url]: https://nodejs.org/en/download
|
|
[travis-image]: https://img.shields.io/travis/jshttp/content-disposition.svg?style=flat
|
|
[travis-url]: https://travis-ci.org/jshttp/content-disposition
|
|
[coveralls-image]: https://img.shields.io/coveralls/jshttp/content-disposition.svg?style=flat
|
|
[coveralls-url]: https://coveralls.io/r/jshttp/content-disposition?branch=master
|
|
[downloads-image]: https://img.shields.io/npm/dm/content-disposition.svg?style=flat
|
|
[downloads-url]: https://npmjs.org/package/content-disposition
|