Struct media_type::Value

pub struct Value<'a> { /* fields omitted */ }

A parameter value section of a Mime.

Except for the charset parameter, parameters are compared case sensitive

Methods

impl<'a> Value<'a>

pub fn as_str_repr(&self) -> &'a str

Returns the underlying representation.

The underlying representation differs from the content, as it can contain quotes surrounding the content and quoted-pairs, even if non of them are necessary to represent the content.

For example the representation r#""a\"\ b""# corresponds to the content r#""a" b"#. Another semantically equivalent (i.e. with the same content) representation is r#""a\" b""

Example

let mime = r#"text/plain; param="abc def""#.parse::<mime::Mime>().unwrap();
let param = mime.get_param("param").unwrap();
assert_eq!(param.as_str_repr(), r#""abc def""#);

pub fn to_content(&self) -> Cow<'a, str>

Returns the content of this instance.

It differs to the representation in that it will remove the quotation marks from the quoted string and will "unquote" quoted pairs.

If the underlying representation is a quoted string containing quoted-pairs Cow::Owned is returned.

If the underlying representation is a quoted-string without quoted-pairs Cow::Borrowed is returned as normal str slicing can be used to strip the surrounding double quoted.

If the underlying representation is not a quoted-string Cow::Borrowed is returned, too.

Example

use std::borrow::Cow;

let raw_mime = r#"text/plain; p1="char is \""; p2="simple"; p3=simple2"#;
let mime = raw_mime.parse::<mime::Mime>().unwrap();

let param1 = mime.get_param("p1").unwrap();
let expected: Cow<'static, str> = Cow::Owned(r#"char is ""#.into());
assert_eq!(param1.to_content(), expected);

let param2 = mime.get_param("p2").unwrap();
assert_eq!(param2.to_content(), Cow::Borrowed("simple"));

let param3 = mime.get_param("p3").unwrap();
assert_eq!(param3.to_content(), Cow::Borrowed("simple2"));

pub fn is_quoted(&self) -> bool

Trait Implementations

impl<'a> From<Value<'a>> for Cow<'a, str>

fn from(value: Value<'a>) -> Self

Performs the conversion.

impl<'a> Clone for Value<'a>

fn clone(&self) -> Value<'a>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'a> Copy for Value<'a>

impl<'a> Eq for Value<'a>

impl<'a, 'b> PartialEq<Value<'b>> for Value<'a>

fn eq(&self, other: &Value<'b>) -> bool

This method tests for self and other values to be equal, and is used by ==.

#[must_use] fn ne(&self, other: &Rhs) -> bool

This method tests for !=.

impl<'a> PartialEq<str> for Value<'a>

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

This method tests for self and other values to be equal, and is used by ==.

#[must_use] fn ne(&self, other: &Rhs) -> bool

This method tests for !=.

impl<'a, 'b> PartialEq<&'b str> for Value<'a>

fn eq(&self, other: &&'b str) -> bool

This method tests for self and other values to be equal, and is used by ==.

#[must_use] fn ne(&self, other: &Rhs) -> bool

This method tests for !=.

impl<'a, 'b> PartialEq<Value<'b>> for &'a str

fn eq(&self, other: &Value<'b>) -> bool

This method tests for self and other values to be equal, and is used by ==.

#[must_use] fn ne(&self, other: &Rhs) -> bool

This method tests for !=.

impl<'a> PartialEq<Value<'a>> for str

fn eq(&self, other: &Value<'a>) -> bool

This method tests for self and other values to be equal, and is used by ==.

#[must_use] fn ne(&self, other: &Rhs) -> bool

This method tests for !=.

impl<'a> Debug for Value<'a>

fn fmt(&self, f: &mut Formatter) -> Result

Formats the value using the given formatter.

impl<'a> Hash for Value<'a>

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

Feeds this value into the given [Hasher].

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

Feeds a slice of this type into the given [Hasher].

impl<'a, 'b> AsciiCaseInsensitiveEq<Value<'b>> for Value<'a>

fn eq_ignore_ascii_case(&self, other: &Value<'b>) -> bool

compares this instance with other with a ascii case insensitive comparsion algorithm

impl<'a> AsciiCaseInsensitiveEq<str> for Value<'a>

fn eq_ignore_ascii_case(&self, other: &str) -> bool

compares this instance with other with a ascii case insensitive comparsion algorithm

impl<'a> AsciiCaseInsensitiveEq<Value<'a>> for str

fn eq_ignore_ascii_case(&self, other: &Value<'a>) -> bool

compares this instance with other with a ascii case insensitive comparsion algorithm

impl<'a, 'b> AsciiCaseInsensitiveEq<&'b str> for Value<'a>

fn eq_ignore_ascii_case(&self, other: &&'b str) -> bool

compares this instance with other with a ascii case insensitive comparsion algorithm

impl<'a, 'b> AsciiCaseInsensitiveEq<Value<'a>> for &'b str

fn eq_ignore_ascii_case(&self, other: &Value<'a>) -> bool

compares this instance with other with a ascii case insensitive comparsion algorithm