Function cssparser::stylesheet_encoding

pub fn stylesheet_encoding<E>(
    css: &[u8], 
    protocol_encoding_label: Option<&[u8]>, 
    environment_encoding: Option<E::Encoding>
) -> E::Encoding where
    E: EncodingSupport, 

Determine the character encoding of a CSS stylesheet.

This is based on the presence of a BOM (Byte Order Mark), an @charset rule, and encoding meta-information.

• css_bytes: A byte string.
• protocol_encoding: The encoding label, if any, defined by HTTP or equivalent protocol. (e.g. via the charset parameter of the Content-Type header.)
• environment_encoding: An optional Encoding object for the environment encoding, if any.

Returns the encoding to use.