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use mime::{self, Mime}; header! { /// `Content-Type` header, defined in /// [RFC7231](http://tools.ietf.org/html/rfc7231#section-3.1.1.5) /// /// The `Content-Type` header field indicates the media type of the /// associated representation: either the representation enclosed in the /// message payload or the selected representation, as determined by the /// message semantics. The indicated media type defines both the data /// format and how that data is intended to be processed by a recipient, /// within the scope of the received message semantics, after any content /// codings indicated by Content-Encoding are decoded. /// /// Although the `mime` crate allows the mime options to be any slice, this crate /// forces the use of Vec. This is to make sure the same header can't have more than 1 type. If /// this is an issue, it's possible to implement `Header` on a custom struct. /// /// # ABNF /// /// ```text /// Content-Type = media-type /// ``` /// /// # Example values /// /// * `text/html; charset=utf-8` /// * `application/json` /// /// # Examples /// /// ``` /// use hyper::header::{Headers, ContentType}; /// /// let mut headers = Headers::new(); /// /// headers.set( /// ContentType::json() /// ); /// ``` /// /// ``` /// use hyper::header::{Headers, ContentType}; /// use hyper::mime; /// /// let mut headers = Headers::new(); /// /// headers.set( /// ContentType(mime::TEXT_HTML) /// ); /// ``` (ContentType, "Content-Type") => danger [Mime] test_content_type { test_header!( test1, vec![b"text/html"], Some(HeaderField(TEXT_HTML))); } } impl ContentType { /// A constructor to easily create a `Content-Type: application/json` header. #[inline] pub fn json() -> ContentType { ContentType(mime::APPLICATION_JSON) } /// A constructor to easily create a `Content-Type: text/plain; charset=utf-8` header. #[inline] pub fn plaintext() -> ContentType { ContentType(mime::TEXT_PLAIN_UTF_8) } /// A constructor to easily create a `Content-Type: text/html` header. #[inline] pub fn html() -> ContentType { ContentType(mime::TEXT_HTML) } /// A constructor to easily create a `Content-Type: text/xml` header. #[inline] pub fn xml() -> ContentType { ContentType(mime::TEXT_XML) } /// A constructor to easily create a `Content-Type: application/www-form-url-encoded` header. #[inline] pub fn form_url_encoded() -> ContentType { ContentType(mime::APPLICATION_WWW_FORM_URLENCODED) } /// A constructor to easily create a `Content-Type: image/jpeg` header. #[inline] pub fn jpeg() -> ContentType { ContentType(mime::IMAGE_JPEG) } /// A constructor to easily create a `Content-Type: image/png` header. #[inline] pub fn png() -> ContentType { ContentType(mime::IMAGE_PNG) } /// A constructor to easily create a `Content-Type: application/octet-stream` header. #[inline] pub fn octet_stream() -> ContentType { ContentType(mime::APPLICATION_OCTET_STREAM) } } impl Eq for ContentType {} bench_header!(bench, ContentType, { vec![b"application/json".to_vec()] });