Struct rsvg::xml::attributes::Attributes

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pub struct Attributes {
    attrs: Box<[(QualName, DefaultAtom)]>,
    id_idx: Option<u16>,
    class_idx: Option<u16>,
}
Expand description

Iterable wrapper for libxml2’s representation of attribute/value.

See the new_from_xml2_attributes function for information.

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§attrs: Box<[(QualName, DefaultAtom)]>§id_idx: Option<u16>§class_idx: Option<u16>

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impl Attributes

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pub unsafe fn new_from_xml2_attributes( n_attributes: usize, attrs: *const *const c_char ) -> Result<Attributes, LoadingError>

Creates an iterable Attributes from the C array of borrowed C strings.

With libxml2’s SAX parser, the caller’s startElementNsSAX2Func callback gets passed a xmlChar ** for attributes, which comes in groups of (localname/prefix/URI/value_start/value_end). In those, localname/prefix/URI are NUL-terminated strings; value_start and value_end point to the start-inclusive and end-exclusive bytes in the attribute’s value.

§Safety

This function is unsafe because the caller must guarantee the following:

  • attrs is a valid pointer, with (n_attributes * 5) elements.

  • All strings are valid UTF-8.

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pub fn len(&self) -> usize

Returns the number of attributes.

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pub fn iter(&self) -> AttributesIter<'_>

Creates an iterator that yields (QualName, &'a str) tuples.

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pub fn get_id(&self) -> Option<&str>

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pub fn get_class(&self) -> Option<&str>

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pub fn clear_class(&mut self)

Trait Implementations§

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impl Clone for Attributes

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fn clone(&self) -> Attributes

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more

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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<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> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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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> Pointable for T

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const ALIGN: usize = _

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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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<SS, SP> SupersetOf<SS> for SP
where SS: SubsetOf<SP>,

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fn to_subset(&self) -> Option<SS>

The inverse inclusion map: attempts to construct self from the equivalent element of its superset. Read more
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fn is_in_subset(&self) -> bool

Checks if self is actually part of its subset T (and can be converted to it).
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fn to_subset_unchecked(&self) -> SS

Use with care! Same as self.to_subset but without any property checks. Always succeeds.
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fn from_subset(element: &SS) -> SP

The inclusion map: converts self to the equivalent element of its superset.
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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, U> TryFrom<U> for 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.