Struct rsvg::xml::attributes::Attributes

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

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

See the new_from_xml2_attributes function for information.

Fields

attrs: Box<[(QualName, DefaultAtom)]>

id_idx: Option<u16>

class_idx: Option<u16>

Implementations

impl Attributes

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.

pub fn len(&self) -> usize

Returns the number of attributes.

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

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

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

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

pub fn clear_class(&mut self)

Trait Implementations

impl Clone for Attributes

fn clone(&self) -> Attributes

Returns a copy of the value.

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

Performs copy-assignment from source.