Enum rsvg::cond::SystemLanguage

pub enum SystemLanguage {
    Valid(LanguageTags),
    Invalid,
}

The systemLanguage attribute inside <cond> element’s children.

Parsing the value of a systemLanguage attribute may fail if the document supplies invalid BCP47 language tags. In that case, we store an Invalid variant.

That variant is used later, during SystemLanguage::eval, to see whether the <cond> should match or not.

Variants

Valid(LanguageTags)

Invalid

Implementations

impl SystemLanguage

pub fn from_attribute(s: &str, session: &Session) -> SystemLanguage

Parse a systemLanguage attribute and match it against a given Locale

The systemLanguage conditional attribute is a comma-separated list of BCP47 Language Tags. This function parses the attribute and matches the result against a given locale. If there is a match, i.e. if the given locale supports one of the languages listed in the systemLanguage attribute, then the SystemLanguage.0 will be true; otherwise it will be false.

Normally, calling code will pass &Locale::current() for the locale attribute; this is the user’s current locale.

pub fn eval(&self, user_language: &UserLanguage) -> bool

Evaluate a systemLanguage value for conditional processing.

Trait Implementations

impl Debug for SystemLanguage

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

Formats the value using the given formatter.

impl PartialEq for SystemLanguage

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

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

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for SystemLanguage