rocket::http

Struct ContentType

pub struct ContentType(pub MediaType);
Expand description

Representation of HTTP Content-Types.

§Usage

ContentTypes should rarely be created directly. Instead, an associated constant should be used; one is declared for most commonly used content types.

§Example

A Content-Type of text/html; charset=utf-8 can be instantiated via the HTML constant:

use rocket::http::ContentType;

let html = ContentType::HTML;

ContentType implements Into<Header>. As such, it can be used in any context where an Into<Header> is expected:

use rocket::http::ContentType;
use rocket::response::Response;

let response = Response::build().header(ContentType::HTML).finalize();

Tuple Fields§

§0: MediaType

Implementations§

§

impl ContentType

pub const Any: ContentType = _

Content Type for any media type: */*

pub const Binary: ContentType = _

Content Type for binary data: application/octet-stream

pub const Bytes: ContentType = _

Content Type for binary data: application/octet-stream

pub const HTML: ContentType = _

Content Type for HTML: text/html; charset=utf-8

pub const Plain: ContentType = _

Content Type for plain text: text/plain; charset=utf-8

pub const Text: ContentType = _

Content Type for plain text: text/plain; charset=utf-8

pub const JSON: ContentType = _

Content Type for JSON: application/json

pub const MsgPack: ContentType = _

Content Type for MsgPack: application/msgpack

pub const Form: ContentType = _

Content Type for forms: application/x-www-form-urlencoded

pub const JavaScript: ContentType = _

Content Type for JavaScript: text/javascript

pub const CSS: ContentType = _

Content Type for CSS: text/css; charset=utf-8

pub const FormData: ContentType = _

Content Type for multipart form data: multipart/form-data

pub const XML: ContentType = _

Content Type for XML: text/xml; charset=utf-8

pub const OPF: ContentType = _

Content Type for OPF: application/oebps-package+xml

pub const XHTML: ContentType = _

Content Type for XHTML: application/xhtml+xml

pub const CSV: ContentType = _

Content Type for CSV: text/csv; charset=utf-8

pub const PNG: ContentType = _

Content Type for PNG: image/png

pub const GIF: ContentType = _

Content Type for GIF: image/gif

pub const BMP: ContentType = _

Content Type for BMP: image/bmp

pub const JPEG: ContentType = _

Content Type for JPEG: image/jpeg

pub const WEBP: ContentType = _

Content Type for WEBP: image/webp

pub const AVIF: ContentType = _

Content Type for AVIF: image/avif

pub const SVG: ContentType = _

Content Type for SVG: image/svg+xml

pub const Icon: ContentType = _

Content Type for Icon: image/x-icon

pub const WEBM: ContentType = _

Content Type for WEBM: video/webm

pub const WEBA: ContentType = _

Content Type for WEBM Audio: audio/webm

pub const OGG: ContentType = _

Content Type for OGG Video: video/ogg

pub const FLAC: ContentType = _

Content Type for FLAC: audio/flac

pub const WAV: ContentType = _

Content Type for WAV: audio/wav

pub const PDF: ContentType = _

Content Type for PDF: application/pdf

pub const TTF: ContentType = _

Content Type for TTF: application/font-sfnt

pub const OTF: ContentType = _

Content Type for OTF: application/font-sfnt

pub const WOFF: ContentType = _

Content Type for WOFF: application/font-woff

pub const WOFF2: ContentType = _

Content Type for WOFF2: font/woff2

pub const JsonApi: ContentType = _

Content Type for JSON API: application/vnd.api+json

pub const WASM: ContentType = _

Content Type for WASM: application/wasm

pub const TIFF: ContentType = _

Content Type for TIFF: image/tiff

pub const AAC: ContentType = _

Content Type for AAC Audio: audio/aac

pub const Calendar: ContentType = _

Content Type for iCalendar: text/calendar

pub const MPEG: ContentType = _

Content Type for MPEG Video: video/mpeg

pub const TAR: ContentType = _

Content Type for tape archive: application/x-tar

pub const GZIP: ContentType = _

Content Type for gzipped binary: application/gzip

pub const MOV: ContentType = _

Content Type for quicktime video: video/quicktime

pub const MP3: ContentType = _

Content Type for MPEG Audio: audio/mpeg

pub const MP4: ContentType = _

Content Type for MPEG4 Video: video/mp4

pub const ZIP: ContentType = _

Content Type for ZIP archive: application/zip

pub const CBZ: ContentType = _

Content Type for Comic ZIP archive: application/vnd.comicbook+zip

pub const CBR: ContentType = _

Content Type for Comic RAR compressed archive: application/vnd.comicbook-rar

pub const RAR: ContentType = _

Content Type for RAR compressed archive: application/vnd.rar

pub const EPUB: ContentType = _

Content Type for EPUB: application/epub+zip

pub const EventStream: ContentType = _

Content Type for SSE stream: text/event-stream

pub const Markdown: ContentType = _

Content Type for markdown text: text/markdown; charset=utf-8

pub const EXE: ContentType = _

Content Type for executable: application/vnd.microsoft.portable-executable

pub fn new<T, S>(top: T, sub: S) -> ContentType
where T: Into<Cow<'static, str>>, S: Into<Cow<'static, str>>,

Creates a new ContentType with top-level type top and subtype sub. This should only be used to construct uncommon or custom content types. Use an associated constant for everything else.

§Example

Create a custom application/x-person content type:

use rocket::http::ContentType;

let custom = ContentType::new("application", "x-person");
assert_eq!(custom.top(), "application");
assert_eq!(custom.sub(), "x-person");

pub fn parse_flexible(name: &str) -> Option<ContentType>

Flexibly parses name into a ContentType. The parse is flexible because, in addition to strictly correct content types, it recognizes the following shorthands:

For regular parsing, use ContentType::from_str().

§Example

Using a shorthand:

use rocket::http::ContentType;

let html = ContentType::parse_flexible("html");
assert_eq!(html, Some(ContentType::HTML));

let json = ContentType::parse_flexible("json");
assert_eq!(json, Some(ContentType::JSON));

Using the full content-type:

use rocket::http::ContentType;

let html = ContentType::parse_flexible("text/html; charset=utf-8");
assert_eq!(html, Some(ContentType::HTML));

let json = ContentType::parse_flexible("application/json");
assert_eq!(json, Some(ContentType::JSON));

let custom = ContentType::parse_flexible("application/x+custom");
assert_eq!(custom, Some(ContentType::new("application", "x+custom")));

An unrecognized content-type:

use rocket::http::ContentType;

let foo = ContentType::parse_flexible("foo");
assert_eq!(foo, None);

let bar = ContentType::parse_flexible("foo/bar/baz");
assert_eq!(bar, None);

pub fn from_extension(ext: &str) -> Option<ContentType>

Returns the Content-Type associated with the extension ext.

Extensions are matched case-insensitively. Not all extensions are recognized. If an extensions is not recognized, None is returned. The currently recognized extensions are:

This list is likely to grow.

§Example

Recognized content types:

use rocket::http::ContentType;

let xml = ContentType::from_extension("xml");
assert_eq!(xml, Some(ContentType::XML));

let xml = ContentType::from_extension("XML");
assert_eq!(xml, Some(ContentType::XML));

An unrecognized content type:

use rocket::http::ContentType;

let foo = ContentType::from_extension("foo");
assert!(foo.is_none());

pub fn with_params<K, V, P>(self, parameters: P) -> ContentType
where K: Into<Cow<'static, str>>, V: Into<Cow<'static, str>>, P: IntoCollection<(K, V)>,

Sets the parameters parameters on self.

§Example

Create a custom application/x-id; id=1 media type:

use rocket::http::ContentType;

let id = ContentType::new("application", "x-id").with_params(("id", "1"));
assert_eq!(id.to_string(), "application/x-id; id=1".to_string());

Create a custom text/person; name=bob; weight=175 media type:

use rocket::http::ContentType;

let mt = ContentType::new("text", "person")
    .with_params([("name", "bob"), ("ref", "2382")]);

assert_eq!(mt.to_string(), "text/person; name=bob; ref=2382".to_string());

pub fn media_type(&self) -> &MediaType

Borrows the inner MediaType of self.

§Example
use rocket::http::{ContentType, MediaType};

let http = ContentType::HTML;
let media_type = http.media_type();

pub fn extension(&self) -> Option<&UncasedStr>

Returns the most common file extension associated with the Content-Type self if it is known. Otherwise, returns None.

The currently recognized extensions are identical to those in ContentType::from_extension() with the most common extension being the first extension appearing in the list for a given Content-Type.

§Example

Known extension:

use rocket::http::ContentType;

assert_eq!(ContentType::JSON.extension().unwrap(), "json");
assert_eq!(ContentType::JPEG.extension().unwrap(), "jpeg");
assert_eq!(ContentType::JPEG.extension().unwrap(), "JPEG");
assert_eq!(ContentType::PDF.extension().unwrap(), "pdf");

An unknown extension:

use rocket::http::ContentType;

let foo = ContentType::new("foo", "bar");
assert!(foo.extension().is_none());

Methods from Deref<Target = MediaType>§

pub const Any: MediaType = _

pub const Binary: MediaType = _

pub const Bytes: MediaType = _

pub const HTML: MediaType = _

pub const Plain: MediaType = _

pub const Text: MediaType = _

pub const JSON: MediaType = _

pub const MsgPack: MediaType = _

pub const Form: MediaType = _

pub const JavaScript: MediaType = _

pub const CSS: MediaType = _

pub const FormData: MediaType = _

pub const XML: MediaType = _

pub const OPF: MediaType = _

pub const XHTML: MediaType = _

pub const CSV: MediaType = _

pub const PNG: MediaType = _

pub const GIF: MediaType = _

pub const BMP: MediaType = _

pub const JPEG: MediaType = _

pub const WEBP: MediaType = _

pub const AVIF: MediaType = _

pub const SVG: MediaType = _

pub const Icon: MediaType = _

pub const WEBM: MediaType = _

pub const WEBA: MediaType = _

pub const OGG: MediaType = _

pub const FLAC: MediaType = _

pub const WAV: MediaType = _

pub const PDF: MediaType = _

pub const TTF: MediaType = _

pub const OTF: MediaType = _

pub const WOFF: MediaType = _

pub const WOFF2: MediaType = _

pub const JsonApi: MediaType = _

pub const WASM: MediaType = _

pub const TIFF: MediaType = _

pub const AAC: MediaType = _

pub const Calendar: MediaType = _

pub const MPEG: MediaType = _

pub const TAR: MediaType = _

pub const GZIP: MediaType = _

pub const MOV: MediaType = _

pub const MP3: MediaType = _

pub const MP4: MediaType = _

pub const ZIP: MediaType = _

pub const CBZ: MediaType = _

pub const CBR: MediaType = _

pub const RAR: MediaType = _

pub const EPUB: MediaType = _

pub const EventStream: MediaType = _

pub const Markdown: MediaType = _

pub const EXE: MediaType = _

pub fn top(&self) -> &UncasedStr

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");

pub fn sub(&self) -> &UncasedStr

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");

pub fn specificity(&self) -> u8

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);

pub fn exact_eq(&self, other: &MediaType) -> bool

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

This is different from the PartialEq implementation in that it considers parameters. In particular, Eq implies PartialEq but PartialEq does not imply Eq. That is, if PartialEq returns false, this function is guaranteed to return false. Similarly, if exact_eq returns true, PartialEq is guaranteed to return true. However, if PartialEq returns true, exact_eq function may or may not return true.

§Example
use rocket::http::MediaType;

let plain = MediaType::Plain;
let plain2 = MediaType::new("text", "plain").with_params(("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));

pub fn params(&self) -> impl Iterator<Item = (&UncasedStr, &str)>

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 (key, val) = plain.params().next().unwrap();
assert_eq!(key, "charset");
assert_eq!(val, "utf-8");

The MediaType::PNG type has no parameters:

use rocket::http::MediaType;

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

pub fn param<'a>(&'a self, name: &str) -> Option<&'a str>

Returns the first parameter with name name, if there is any.

pub fn extension(&self) -> Option<&UncasedStr>

Returns the most common file extension associated with the Media-Type self if it is known. Otherwise, returns None.

The currently recognized extensions are identical to those in MediaType::from_extension() with the most common extension being the first extension appearing in the list for a given Content-Type.

§Example

Known extension:

use rocket::http::MediaType;

assert_eq!(MediaType::JSON.extension().unwrap(), "json");
assert_eq!(MediaType::JPEG.extension().unwrap(), "jpeg");
assert_eq!(MediaType::JPEG.extension().unwrap(), "JPEG");
assert_eq!(MediaType::PDF.extension().unwrap(), "pdf");

An unknown extension:

use rocket::http::MediaType;

let foo = MediaType::new("foo", "bar");
assert!(foo.extension().is_none());

pub fn is_known(&self) -> bool

Returns true if this MediaType is known to Rocket. In other words, returns true if there is an associated constant for self.

pub fn is_any(&self) -> bool

Returns true if the top-level and sublevel types of self are the same as those of MediaType::Any, i.e */*.

pub fn is_binary(&self) -> bool

Returns true if the top-level and sublevel types of self are the same as those of MediaType::Binary, i.e application/octet-stream.

pub fn is_bytes(&self) -> bool

Returns true if the top-level and sublevel types of self are the same as those of MediaType::Bytes, i.e application/octet-stream.

pub fn is_html(&self) -> bool

Returns true if the top-level and sublevel types of self are the same as those of MediaType::HTML, i.e text/html.

pub fn is_plain(&self) -> bool

Returns true if the top-level and sublevel types of self are the same as those of MediaType::Plain, i.e text/plain.

pub fn is_text(&self) -> bool

Returns true if the top-level and sublevel types of self are the same as those of MediaType::Text, i.e text/plain.

pub fn is_json(&self) -> bool

Returns true if the top-level and sublevel types of self are the same as those of MediaType::JSON, i.e application/json.

pub fn is_msgpack(&self) -> bool

Returns true if the top-level and sublevel types of self are the same as those of MediaType::MsgPack, i.e application/msgpack.

pub fn is_form(&self) -> bool

Returns true if the top-level and sublevel types of self are the same as those of MediaType::Form, i.e application/x-www-form-urlencoded.

pub fn is_javascript(&self) -> bool

Returns true if the top-level and sublevel types of self are the same as those of MediaType::JavaScript, i.e text/javascript.

pub fn is_css(&self) -> bool

Returns true if the top-level and sublevel types of self are the same as those of MediaType::CSS, i.e text/css.

pub fn is_form_data(&self) -> bool

Returns true if the top-level and sublevel types of self are the same as those of MediaType::FormData, i.e multipart/form-data.

pub fn is_xml(&self) -> bool

Returns true if the top-level and sublevel types of self are the same as those of MediaType::XML, i.e text/xml.

pub fn is_opf(&self) -> bool

Returns true if the top-level and sublevel types of self are the same as those of MediaType::OPF, i.e application/oebps-package+xml.

pub fn is_xhtml(&self) -> bool

Returns true if the top-level and sublevel types of self are the same as those of MediaType::XHTML, i.e application/xhtml+xml.

pub fn is_csv(&self) -> bool

Returns true if the top-level and sublevel types of self are the same as those of MediaType::CSV, i.e text/csv.

pub fn is_png(&self) -> bool

Returns true if the top-level and sublevel types of self are the same as those of MediaType::PNG, i.e image/png.

pub fn is_gif(&self) -> bool

Returns true if the top-level and sublevel types of self are the same as those of MediaType::GIF, i.e image/gif.

pub fn is_bmp(&self) -> bool

Returns true if the top-level and sublevel types of self are the same as those of MediaType::BMP, i.e image/bmp.

pub fn is_jpeg(&self) -> bool

Returns true if the top-level and sublevel types of self are the same as those of MediaType::JPEG, i.e image/jpeg.

pub fn is_webp(&self) -> bool

Returns true if the top-level and sublevel types of self are the same as those of MediaType::WEBP, i.e image/webp.

pub fn is_avif(&self) -> bool

Returns true if the top-level and sublevel types of self are the same as those of MediaType::AVIF, i.e image/avif.

pub fn is_svg(&self) -> bool

Returns true if the top-level and sublevel types of self are the same as those of MediaType::SVG, i.e image/svg+xml.

pub fn is_icon(&self) -> bool

Returns true if the top-level and sublevel types of self are the same as those of MediaType::Icon, i.e image/x-icon.

pub fn is_webm(&self) -> bool

Returns true if the top-level and sublevel types of self are the same as those of MediaType::WEBM, i.e video/webm.

pub fn is_weba(&self) -> bool

Returns true if the top-level and sublevel types of self are the same as those of MediaType::WEBA, i.e audio/webm.

pub fn is_ogg(&self) -> bool

Returns true if the top-level and sublevel types of self are the same as those of MediaType::OGG, i.e video/ogg.

pub fn is_flac(&self) -> bool

Returns true if the top-level and sublevel types of self are the same as those of MediaType::FLAC, i.e audio/flac.

pub fn is_wav(&self) -> bool

Returns true if the top-level and sublevel types of self are the same as those of MediaType::WAV, i.e audio/wav.

pub fn is_pdf(&self) -> bool

Returns true if the top-level and sublevel types of self are the same as those of MediaType::PDF, i.e application/pdf.

pub fn is_ttf(&self) -> bool

Returns true if the top-level and sublevel types of self are the same as those of MediaType::TTF, i.e application/font-sfnt.

pub fn is_otf(&self) -> bool

Returns true if the top-level and sublevel types of self are the same as those of MediaType::OTF, i.e application/font-sfnt.

pub fn is_woff(&self) -> bool

Returns true if the top-level and sublevel types of self are the same as those of MediaType::WOFF, i.e application/font-woff.

pub fn is_woff2(&self) -> bool

Returns true if the top-level and sublevel types of self are the same as those of MediaType::WOFF2, i.e font/woff2.

pub fn is_json_api(&self) -> bool

Returns true if the top-level and sublevel types of self are the same as those of MediaType::JsonApi, i.e application/vnd.api+json.

pub fn is_wasm(&self) -> bool

Returns true if the top-level and sublevel types of self are the same as those of MediaType::WASM, i.e application/wasm.

pub fn is_tiff(&self) -> bool

Returns true if the top-level and sublevel types of self are the same as those of MediaType::TIFF, i.e image/tiff.

pub fn is_aac(&self) -> bool

Returns true if the top-level and sublevel types of self are the same as those of MediaType::AAC, i.e audio/aac.

pub fn is_ical(&self) -> bool

Returns true if the top-level and sublevel types of self are the same as those of MediaType::Calendar, i.e text/calendar.

pub fn is_mpeg(&self) -> bool

Returns true if the top-level and sublevel types of self are the same as those of MediaType::MPEG, i.e video/mpeg.

pub fn is_tar(&self) -> bool

Returns true if the top-level and sublevel types of self are the same as those of MediaType::TAR, i.e application/x-tar.

pub fn is_gzip(&self) -> bool

Returns true if the top-level and sublevel types of self are the same as those of MediaType::GZIP, i.e application/gzip.

pub fn is_mov(&self) -> bool

Returns true if the top-level and sublevel types of self are the same as those of MediaType::MOV, i.e video/quicktime.

pub fn is_mp3(&self) -> bool

Returns true if the top-level and sublevel types of self are the same as those of MediaType::MP3, i.e audio/mpeg.

pub fn is_mp4(&self) -> bool

Returns true if the top-level and sublevel types of self are the same as those of MediaType::MP4, i.e video/mp4.

pub fn is_zip(&self) -> bool

Returns true if the top-level and sublevel types of self are the same as those of MediaType::ZIP, i.e application/zip.

pub fn is_cbz(&self) -> bool

Returns true if the top-level and sublevel types of self are the same as those of MediaType::CBZ, i.e application/vnd.comicbook+zip.

pub fn is_cbr(&self) -> bool

Returns true if the top-level and sublevel types of self are the same as those of MediaType::CBR, i.e application/vnd.comicbook-rar.

pub fn is_rar(&self) -> bool

Returns true if the top-level and sublevel types of self are the same as those of MediaType::RAR, i.e application/vnd.rar.

pub fn is_epub(&self) -> bool

Returns true if the top-level and sublevel types of self are the same as those of MediaType::EPUB, i.e application/epub+zip.

pub fn is_event_stream(&self) -> bool

Returns true if the top-level and sublevel types of self are the same as those of MediaType::EventStream, i.e text/event-stream.

pub fn is_markdown(&self) -> bool

Returns true if the top-level and sublevel types of self are the same as those of MediaType::Markdown, i.e text/markdown.

pub fn is_exe(&self) -> bool

Returns true if the top-level and sublevel types of self are the same as those of MediaType::EXE, i.e application/vnd.microsoft.portable-executable.

Trait Implementations§

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impl Clone for ContentType

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fn clone(&self) -> ContentType

Returns a copy of the value. Read more
1.0.0 · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for ContentType

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fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more
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impl Default for ContentType

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fn default() -> ContentType

Returns a ContentType of Any, or */*.

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impl Deref for ContentType

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type Target = MediaType

The resulting type after dereferencing.
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fn deref(&self) -> &MediaType

Dereferences the value.
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impl Display for ContentType

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fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the ContentType as an HTTP Content-Type value.

§Example
use rocket::http::ContentType;

let ct = format!("{}", ContentType::JSON);
assert_eq!(ct, "application/json");
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impl From<ContentType> for Header<'static>

Creates a new Header with name Content-Type and the value set to the HTTP rendering of this Content-Type.

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fn from(content_type: ContentType) -> Header<'static>

Converts to this type from the input type.
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impl From<MediaType> for ContentType

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fn from(media_type: MediaType) -> ContentType

Converts to this type from the input type.
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impl<'r> FromRequest<'r> for &'r ContentType

Source§

type Error = Infallible

The associated error to be returned if derivation fails.
Source§

fn from_request<'life0, 'async_trait>( request: &'r Request<'life0>, ) -> Pin<Box<dyn Future<Output = Outcome<Self, Infallible>> + Send + 'async_trait>>
where Self: 'async_trait, 'r: 'async_trait, 'life0: 'async_trait,

Derives an instance of Self from the incoming request metadata. Read more
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impl FromStr for ContentType

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fn from_str(raw: &str) -> Result<ContentType, String>

Parses a ContentType from a given Content-Type header value.

§Examples

Parsing an application/json:

use std::str::FromStr;
use rocket::http::ContentType;

let json = ContentType::from_str("application/json").unwrap();
assert!(json.is_known());
assert_eq!(json, ContentType::JSON);

Parsing a content type extension:

use std::str::FromStr;
use rocket::http::ContentType;

let custom = ContentType::from_str("application/x-custom").unwrap();
assert!(!custom.is_known());
assert_eq!(custom.top(), "application");
assert_eq!(custom.sub(), "x-custom");

Parsing an invalid Content-Type value:

use std::str::FromStr;
use rocket::http::ContentType;

let custom = ContentType::from_str("application//x-custom");
assert!(custom.is_err());
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type Err = String

The associated error which can be returned from parsing.
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impl Hash for ContentType

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fn hash<__H>(&self, state: &mut __H)
where __H: Hasher,

Feeds this value into the given Hasher. Read more
1.3.0 · Source§

fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl PartialEq for ContentType

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fn eq(&self, other: &ContentType) -> bool

Tests for self and other values to be equal, and is used by ==.
1.0.0 · Source§

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Eq for ContentType

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impl StructuralPartialEq for ContentType

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<'a, T> AsTaggedExplicit<'a> for T
where T: 'a,

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fn explicit(self, class: Class, tag: u32) -> TaggedParser<'a, Explicit, Self>

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impl<'a, T> AsTaggedImplicit<'a> for T
where T: 'a,

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fn implicit( self, class: Class, constructed: bool, tag: u32, ) -> TaggedParser<'a, Implicit, Self>

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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dst: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Compare self to key and return true if they are equal.
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self> ⓘ

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self> ⓘ

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> IntoCollection<T> for T

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fn into_collection<A>(self) -> SmallVec<A>
where A: Array<Item = T>,

Converts self into a collection.
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fn mapped<U, F, A>(self, f: F) -> SmallVec<A>
where F: FnMut(T) -> U, A: Array<Item = U>,

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impl<T> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self> ⓘ

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self> ⓘ
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T> Paint for T
where T: ?Sized,

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fn fg(&self, value: Color) -> Painted<&T>

Returns a styled value derived from self with the foreground set to value.

This method should be used rarely. Instead, prefer to use color-specific builder methods like red() and green(), which have the same functionality but are pithier.

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Set foreground color to white using fg():

use yansi::{Paint, Color};

painted.fg(Color::White);

Set foreground color to white using white().

use yansi::Paint;

painted.white();
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fn primary(&self) -> Painted<&T>

Returns self with the fg() set to Color::Primary.

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println!("{}", value.primary());
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fn fixed(&self, color: u8) -> Painted<&T>

Returns self with the fg() set to Color::Fixed.

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fn rgb(&self, r: u8, g: u8, b: u8) -> Painted<&T>

Returns self with the fg() set to Color::Rgb.

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fn black(&self) -> Painted<&T>

Returns self with the fg() set to Color::Black.

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fn red(&self) -> Painted<&T>

Returns self with the fg() set to Color::Red.

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println!("{}", value.red());
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fn green(&self) -> Painted<&T>

Returns self with the fg() set to Color::Green.

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fn yellow(&self) -> Painted<&T>

Returns self with the fg() set to Color::Yellow.

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println!("{}", value.yellow());
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fn blue(&self) -> Painted<&T>

Returns self with the fg() set to Color::Blue.

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println!("{}", value.blue());
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fn magenta(&self) -> Painted<&T>

Returns self with the fg() set to Color::Magenta.

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println!("{}", value.magenta());
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fn cyan(&self) -> Painted<&T>

Returns self with the fg() set to Color::Cyan.

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println!("{}", value.cyan());
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fn white(&self) -> Painted<&T>

Returns self with the fg() set to Color::White.

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println!("{}", value.white());
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fn bright_black(&self) -> Painted<&T>

Returns self with the fg() set to Color::BrightBlack.

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println!("{}", value.bright_black());
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fn bright_red(&self) -> Painted<&T>

Returns self with the fg() set to Color::BrightRed.

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println!("{}", value.bright_red());
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fn bright_green(&self) -> Painted<&T>

Returns self with the fg() set to Color::BrightGreen.

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println!("{}", value.bright_green());
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fn bright_yellow(&self) -> Painted<&T>

Returns self with the fg() set to Color::BrightYellow.

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println!("{}", value.bright_yellow());
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fn bright_blue(&self) -> Painted<&T>

Returns self with the fg() set to Color::BrightBlue.

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println!("{}", value.bright_blue());
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fn bright_magenta(&self) -> Painted<&T>

Returns self with the fg() set to Color::BrightMagenta.

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println!("{}", value.bright_magenta());
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fn bright_cyan(&self) -> Painted<&T>

Returns self with the fg() set to Color::BrightCyan.

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println!("{}", value.bright_cyan());
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fn bright_white(&self) -> Painted<&T>

Returns self with the fg() set to Color::BrightWhite.

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println!("{}", value.bright_white());
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fn bg(&self, value: Color) -> Painted<&T>

Returns a styled value derived from self with the background set to value.

This method should be used rarely. Instead, prefer to use color-specific builder methods like on_red() and on_green(), which have the same functionality but are pithier.

§Example

Set background color to red using fg():

use yansi::{Paint, Color};

painted.bg(Color::Red);

Set background color to red using on_red().

use yansi::Paint;

painted.on_red();
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fn on_primary(&self) -> Painted<&T>

Returns self with the bg() set to Color::Primary.

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println!("{}", value.on_primary());
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fn on_fixed(&self, color: u8) -> Painted<&T>

Returns self with the bg() set to Color::Fixed.

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println!("{}", value.on_fixed(color));
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fn on_rgb(&self, r: u8, g: u8, b: u8) -> Painted<&T>

Returns self with the bg() set to Color::Rgb.

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println!("{}", value.on_rgb(r, g, b));
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fn on_black(&self) -> Painted<&T>

Returns self with the bg() set to Color::Black.

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println!("{}", value.on_black());
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fn on_red(&self) -> Painted<&T>

Returns self with the bg() set to Color::Red.

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println!("{}", value.on_red());
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fn on_green(&self) -> Painted<&T>

Returns self with the bg() set to Color::Green.

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println!("{}", value.on_green());
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fn on_yellow(&self) -> Painted<&T>

Returns self with the bg() set to Color::Yellow.

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println!("{}", value.on_yellow());
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fn on_blue(&self) -> Painted<&T>

Returns self with the bg() set to Color::Blue.

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println!("{}", value.on_blue());
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fn on_magenta(&self) -> Painted<&T>

Returns self with the bg() set to Color::Magenta.

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println!("{}", value.on_magenta());
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fn on_cyan(&self) -> Painted<&T>

Returns self with the bg() set to Color::Cyan.

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println!("{}", value.on_cyan());
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fn on_white(&self) -> Painted<&T>

Returns self with the bg() set to Color::White.

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println!("{}", value.on_white());
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fn on_bright_black(&self) -> Painted<&T>

Returns self with the bg() set to Color::BrightBlack.

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fn on_bright_red(&self) -> Painted<&T>

Returns self with the bg() set to Color::BrightRed.

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println!("{}", value.on_bright_red());
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fn on_bright_green(&self) -> Painted<&T>

Returns self with the bg() set to Color::BrightGreen.

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println!("{}", value.on_bright_green());
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fn on_bright_yellow(&self) -> Painted<&T>

Returns self with the bg() set to Color::BrightYellow.

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println!("{}", value.on_bright_yellow());
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fn on_bright_blue(&self) -> Painted<&T>

Returns self with the bg() set to Color::BrightBlue.

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println!("{}", value.on_bright_blue());
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fn on_bright_magenta(&self) -> Painted<&T>

Returns self with the bg() set to Color::BrightMagenta.

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println!("{}", value.on_bright_magenta());
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fn on_bright_cyan(&self) -> Painted<&T>

Returns self with the bg() set to Color::BrightCyan.

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println!("{}", value.on_bright_cyan());
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fn on_bright_white(&self) -> Painted<&T>

Returns self with the bg() set to Color::BrightWhite.

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println!("{}", value.on_bright_white());
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fn attr(&self, value: Attribute) -> Painted<&T>

Enables the styling Attribute value.

This method should be used rarely. Instead, prefer to use attribute-specific builder methods like bold() and underline(), which have the same functionality but are pithier.

§Example

Make text bold using attr():

use yansi::{Paint, Attribute};

painted.attr(Attribute::Bold);

Make text bold using using bold().

use yansi::Paint;

painted.bold();
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fn bold(&self) -> Painted<&T>

Returns self with the attr() set to Attribute::Bold.

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println!("{}", value.bold());
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fn dim(&self) -> Painted<&T>

Returns self with the attr() set to Attribute::Dim.

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println!("{}", value.dim());
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fn italic(&self) -> Painted<&T>

Returns self with the attr() set to Attribute::Italic.

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println!("{}", value.italic());
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fn underline(&self) -> Painted<&T>

Returns self with the attr() set to Attribute::Underline.

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println!("{}", value.underline());

Returns self with the attr() set to Attribute::Blink.

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println!("{}", value.blink());

Returns self with the attr() set to Attribute::RapidBlink.

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println!("{}", value.rapid_blink());
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fn invert(&self) -> Painted<&T>

Returns self with the attr() set to Attribute::Invert.

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println!("{}", value.invert());
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fn conceal(&self) -> Painted<&T>

Returns self with the attr() set to Attribute::Conceal.

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println!("{}", value.conceal());
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fn strike(&self) -> Painted<&T>

Returns self with the attr() set to Attribute::Strike.

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fn quirk(&self, value: Quirk) -> Painted<&T>

Enables the yansi Quirk value.

This method should be used rarely. Instead, prefer to use quirk-specific builder methods like mask() and wrap(), which have the same functionality but are pithier.

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Enable wrapping using .quirk():

use yansi::{Paint, Quirk};

painted.quirk(Quirk::Wrap);

Enable wrapping using wrap().

use yansi::Paint;

painted.wrap();
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fn mask(&self) -> Painted<&T>

Returns self with the quirk() set to Quirk::Mask.

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fn wrap(&self) -> Painted<&T>

Returns self with the quirk() set to Quirk::Wrap.

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fn linger(&self) -> Painted<&T>

Returns self with the quirk() set to Quirk::Linger.

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fn clear(&self) -> Painted<&T>

👎Deprecated since 1.0.1: renamed to resetting() due to conflicts with Vec::clear(). The clear() method will be removed in a future release.

Returns self with the quirk() set to Quirk::Clear.

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fn resetting(&self) -> Painted<&T>

Returns self with the quirk() set to Quirk::Resetting.

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fn bright(&self) -> Painted<&T>

Returns self with the quirk() set to Quirk::Bright.

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fn on_bright(&self) -> Painted<&T>

Returns self with the quirk() set to Quirk::OnBright.

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fn whenever(&self, value: Condition) -> Painted<&T>

Conditionally enable styling based on whether the Condition value applies. Replaces any previous condition.

See the crate level docs for more details.

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Enable styling painted only when both stdout and stderr are TTYs:

use yansi::{Paint, Condition};

painted.red().on_yellow().whenever(Condition::STDOUTERR_ARE_TTY);
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fn new(self) -> Painted<Self>
where Self: Sized,

Create a new Painted with a default Style. Read more
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fn paint<S>(&self, style: S) -> Painted<&Self>
where S: Into<Style>,

Apply a style wholesale to self. Any previous style is replaced. Read more
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impl<P, T> Receiver for P
where P: Deref<Target = T> + ?Sized, T: ?Sized,

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type Target = T

🔬This is a nightly-only experimental API. (arbitrary_self_types)
The target type on which the method may be called.
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impl<T> Same for T

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type Output = T

Should always be Self
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T> ToString for T
where T: Display + ?Sized,

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default fn to_string(&self) -> String

Converts the given value to a String. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V

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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> ⓘ
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self> ⓘ

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more