oxvg_optimiser 0.0.5

The OXVG optimiser is library for optimising SVG documents.
Documentation 
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//! HACK: Because we can't store [`StyleAttribute`]/[`StyleSheet`] in ast, these functions
//! will temporarily wrap declarations so that they can be minified.
use lightningcss::{
    declaration::DeclarationBlock,
    error::{Error, MinifyErrorKind},
    rules::CssRuleList,
    stylesheet::{MinifyOptions, ParserOptions, StyleAttribute, StyleSheet},
};

pub(crate) fn style(style: &mut DeclarationBlock) {
    let mut stub = StyleAttribute::parse("", ParserOptions::default()).unwrap();
    std::mem::swap(style, &mut stub.declarations);
    stub.minify(MinifyOptions::default());
    std::mem::swap(style, &mut stub.declarations);
}

pub(crate) fn style_list(style: &mut CssRuleList) -> Result<(), Error<MinifyErrorKind>> {
    let mut stub = StyleSheet::parse("", ParserOptions::default()).unwrap();
    std::mem::swap(style, &mut stub.rules);
    stub.minify(MinifyOptions::default())?;
    std::mem::swap(style, &mut stub.rules);
    Ok(())
}