Struct mail::headers::ContentTransferEncoding

pub struct ContentTransferEncoding;

The transfer encoding used to (transfer) encode the body (rfc2045)

This should either be:

• 7bit: Us-ascii only text, default value if header filed is not present
• quoted-printable: Data encoded with quoted-printable encoding).
• base64: Data encoded with base64 encoding.

Through other defined values include:

• 8bit: Data which is not encoded but still considers lines and line length, i.e. has no more then 998 bytes between two CRLF (or the start/end of data). Bodies of this kind can still be send if the server supports the 8bit mime extension.

• binary: Data which is not encoded and can be any kind of arbitrary binary data. To send binary bodies the CHUNKING smpt extension (rfc3030) needs to be supported using BDATA instead of DATA to send the content. Note that the extension does not fix the potential but rare problem of accendentall multipart boundary collisions.

Nevertheless this encodings are mainly meant to be used for defining the domain of data in a system before it is encoded.

Trait Implementations

impl Clone for ContentTransferEncoding

fn clone(&self) -> ContentTransferEncoding

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Copy for ContentTransferEncoding

impl Default for ContentTransferEncoding

fn default() -> ContentTransferEncoding

Returns the "default value" for a type.

impl HeaderKind for ContentTransferEncoding

type Component = TransferEncoding

the component representing the header-field, e.g. Unstructured for Subject

fn name() -> HeaderName

a method returning the header name

const MAX_ONE: bool

I true this will assure that the header is at most one time in a header map.

const VALIDATOR: Option<fn(&HeaderMap) -> Result<(), HeaderValidationError>>

A function which is meant to be called with a reference to the final header map before encoding the headers. It is meant to be used do some of the contextual validations, like e.g. a From header might return a function which checks if the From header has multiple mailboxes and if so checks if there is a Sender header

fn auto_body<H>(body: H) -> Result<Header<Self>, ComponentCreationError> where
    H: HeaderTryInto<Self::Component>, 

Creates a Header instance automatically converting given body to the right type.

fn body(body: Self::Component) -> Header<Self>

Creates a Header instance for this header kind with given body.

impl MaxOneMarker for ContentTransferEncoding