Retrieve the weight of the media type, if there is any.

Example

use rocket::http::{MediaType, QMediaType};

let q_type = QMediaType(MediaType::HTML, Some(0.3));
assert_eq!(q_type.weight(), Some(0.3));

Retrieve the weight of the media type or a given default value.

Example

use rocket::http::{MediaType, QMediaType};

let q_type = QMediaType(MediaType::HTML, Some(0.3));
assert_eq!(q_type.weight_or(0.9), 0.3);

let q_type = QMediaType(MediaType::HTML, None);
assert_eq!(q_type.weight_or(0.9), 0.9);

Borrow the internal MediaType.

Example

use rocket::http::{MediaType, QMediaType};

let q_type = QMediaType(MediaType::HTML, Some(0.3));
assert_eq!(q_type.media_type(), &MediaType::HTML);

Returns the top-level type for this media type. The return type, UncasedStr, has caseless equality comparison and hashing.

Example

use rocket::http::MediaType;

let plain = MediaType::Plain;
assert_eq!(plain.top(), "text");
assert_eq!(plain.top(), "TEXT");
assert_eq!(plain.top(), "Text");

Returns the subtype for this media type. The return type, UncasedStr, has caseless equality comparison and hashing.

Example

use rocket::http::MediaType;

let plain = MediaType::Plain;
assert_eq!(plain.sub(), "plain");
assert_eq!(plain.sub(), "PlaIN");
assert_eq!(plain.sub(), "pLaIn");

Returns a u8 representing how specific the top-level type and subtype of this media type are.

The return value is either 0, 1, or 2, where 2 is the most specific. A 0 is returned when both the top and sublevel types are *. A 1 is returned when only one of the top or sublevel types is *, and a 2 is returned when neither the top or sublevel types are *.

Example

use rocket::http::MediaType;

let mt = MediaType::Plain;
assert_eq!(mt.specificity(), 2);

let mt = MediaType::new("text", "*");
assert_eq!(mt.specificity(), 1);

let mt = MediaType::Any;
assert_eq!(mt.specificity(), 0);

Compares self with other and returns true if self and other are exactly equal to eachother, including with respect to their parameters.

This is different from the PartialEq implementation in that it considers parameters. If PartialEq returns false, this function is guaranteed to return false. Similarly, if this function returns true, PartialEq is guaranteed to return true. However, if PartialEq returns true, this function may or may not return true.

Example

use rocket::http::MediaType;

let plain = MediaType::Plain;
let plain2 = MediaType::with_params("text", "plain", ("charset", "utf-8"));
let just_plain = MediaType::new("text", "plain");

// The `PartialEq` implementation doesn't consider parameters.
assert!(plain == just_plain);
assert!(just_plain == plain2);
assert!(plain == plain2);

// While `exact_eq` does.
assert!(!plain.exact_eq(&just_plain));
assert!(!plain2.exact_eq(&just_plain));
assert!(plain.exact_eq(&plain2));

Returns an iterator over the (key, value) pairs of the media type's parameter list. The iterator will be empty if the media type has no parameters.

Example

The MediaType::Plain type has one parameter: charset=utf-8:

use rocket::http::MediaType;

let plain = MediaType::Plain;
let plain_params: Vec<_> = plain.params().collect();
assert_eq!(plain_params, vec![("charset", "utf-8")]);

The MediaType::PNG type has no parameters:

use rocket::http::MediaType;

let png = MediaType::PNG;
assert_eq!(png.params().count(), 0);

Returns true if self is the media type for any media type , without considering parameters.

Returns true if self is the media type for binary data , without considering parameters.

Returns true if self is the media type for HTML , without considering parameters.

Returns true if self is the media type for plain text , without considering parameters.

Returns true if self is the media type for JSON , without considering parameters.

Returns true if self is the media type for MessagePack , without considering parameters.

Returns true if self is the media type for forms , without considering parameters.

Returns true if self is the media type for JavaScript , without considering parameters.

Returns true if self is the media type for CSS , without considering parameters.

Returns true if self is the media type for multipart form data , without considering parameters.

Returns true if self is the media type for XML , without considering parameters.

Returns true if self is the media type for CSV , without considering parameters.

Returns true if self is the media type for PNG , without considering parameters.

Returns true if self is the media type for GIF , without considering parameters.

Returns true if self is the media type for BMP , without considering parameters.

Returns true if self is the media type for JPEG , without considering parameters.

Returns true if self is the media type for WEBP , without considering parameters.

Returns true if self is the media type for SVG , without considering parameters.

Returns true if self is the media type for WEBM , without considering parameters.

Returns true if self is the media type for OGG , without considering parameters.

Returns true if self is the media type for WAV , without considering parameters.

Returns true if self is the media type for PDF , without considering parameters.

Returns true if self is the media type for TTF , without considering parameters.

Returns true if self is the media type for OTF , without considering parameters.

Returns true if self is the media type for WOFF , without considering parameters.

Returns true if self is the media type for WOFF2 , without considering parameters.

Returns true if self is the media type for WASM , without considering parameters.

Returns true if self is the media type for JSON API , without considering parameters.

Returns true if this MediaType is known to Rocket, that is, there is an associated constant for self.