Struct trust_dns::rr::Label
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pub struct Label(_);
Labels are always stored as ASCII, unicode characters must be encoded with punycode
Methods
impl Label
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pub fn from_raw_bytes(bytes: &[u8]) -> Result<Label, ProtoError>
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These must only be ASCII, with unicode encoded to PunyCode, or other such transformation.
This uses the bytes as raw ascii values, with nothing escaped on the wire.
Generally users should use from_str
or from_ascii
pub fn from_utf8(s: &str) -> Result<Label, ProtoError>
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Translates this string into IDNA safe name, encoding to punycode as necessary.
pub fn from_ascii(s: &str) -> Result<Label, ProtoError>
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Takes the ascii string and returns a new label.
This will return an Error if the label is not an ascii string
pub fn to_lowercase(&self) -> Label
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Converts this label to lowercase
pub fn is_wildcard(&self) -> bool
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Returns true if this label is the wildcard, '*', label
pub fn len(&self) -> usize
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Returns the lenght in bytes of this label
pub fn as_bytes(&self) -> &[u8]
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Returns the raw bytes of the label, this is good for writing to the wire.
See [Display
] for presentation version (unescaped from punycode, etc)
pub fn eq_ignore_ascii_case(&self, other: &Label) -> bool
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Performs the equivelence operation disregarding case
pub fn cmp_with_f<F>(&self, other: &Label) -> Ordering where
F: LabelCmp,
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F: LabelCmp,
compares with the other label, ignoring case
pub fn to_utf8(&self) -> String
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Performs the conversion to utf8 from IDNA as necessary, see fmt
for more details
pub fn to_ascii(&self) -> String
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Converts this label to safe ascii, escaping characters as necessary
If this is an IDNA, punycode, label, then the xn-- prefix will be maintained as ascii
pub fn write_ascii<W>(&self, f: &mut W) -> Result<(), Error> where
W: Write,
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W: Write,
Writes this label to safe ascii, escaping characters as necessary
Trait Implementations
impl IntoLabel for Label
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fn into_label(self) -> Result<Label, ProtoError>
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Convert this into Label
impl<'a> IntoLabel for &'a Label
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fn into_label(self) -> Result<Label, ProtoError>
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Convert this into Label
impl PartialOrd<Label> for Label
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fn partial_cmp(&self, other: &Label) -> Option<Ordering>
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This method returns an ordering between self
and other
values if one exists. Read more
fn lt(&self, other: &Rhs) -> bool
1.0.0[src]
This method tests less than (for self
and other
) and is used by the <
operator. Read more
fn le(&self, other: &Rhs) -> bool
1.0.0[src]
This method tests less than or equal to (for self
and other
) and is used by the <=
operator. Read more
fn gt(&self, other: &Rhs) -> bool
1.0.0[src]
This method tests greater than (for self
and other
) and is used by the >
operator. Read more
fn ge(&self, other: &Rhs) -> bool
1.0.0[src]
This method tests greater than or equal to (for self
and other
) and is used by the >=
operator. Read more
impl PartialEq<Label> for Label
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fn eq(&self, other: &Label) -> bool
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This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, other: &Rhs) -> bool
1.0.0[src]
This method tests for !=
.
impl Clone for Label
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fn clone(&self) -> Label
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Returns a copy of the value. Read more
fn clone_from(&mut self, source: &Self)
1.0.0[src]
Performs copy-assignment from source
. Read more
impl Ord for Label
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fn cmp(&self, other: &Label) -> Ordering
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This method returns an Ordering
between self
and other
. Read more
fn max(self, other: Self) -> Self
1.21.0[src]
Compares and returns the maximum of two values. Read more
fn min(self, other: Self) -> Self
1.21.0[src]
Compares and returns the minimum of two values. Read more
impl AsRef<[u8]> for Label
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impl Display for Label
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fn fmt(&self, f: &mut Formatter) -> Result<(), Error>
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outputs characters in a safe string manner.
if the string is punycode, i.e. starts with xn--
, otherwise it translates to a safe ascii string
escaping characters as necessary.
impl Eq for Label
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impl Hash for Label
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fn hash<H>(&self, state: &mut H) where
H: Hasher,
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H: Hasher,
Feeds this value into the given [Hasher
]. Read more
fn hash_slice<H>(data: &[Self], state: &mut H) where
H: Hasher,
1.3.0[src]
H: Hasher,
Feeds a slice of this type into the given [Hasher
]. Read more