43 lines
1.2 KiB
Rust
43 lines
1.2 KiB
Rust
use aho_corasick::{AhoCorasick, AhoCorasickBuilder};
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use css_minify::optimizations::{Level, Minifier};
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use lazy_static::lazy_static;
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use std::str::from_utf8_unchecked;
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use crate::err::ProcessingResult;
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use crate::proc::checkpoint::WriteCheckpoint;
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use crate::proc::MatchAction::*;
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use crate::proc::MatchMode::*;
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use crate::proc::Processor;
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use crate::Cfg;
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lazy_static! {
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static ref STYLE_END: AhoCorasick = AhoCorasickBuilder::new()
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.ascii_case_insensitive(true)
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.build(&["</style"]);
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}
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#[inline(always)]
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pub fn process_style(proc: &mut Processor, cfg: &Cfg) -> ProcessingResult<()> {
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let start = WriteCheckpoint::new(proc);
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proc.require_not_at_end()?;
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let src = proc.m(WhileNotSeq(&STYLE_END), Discard);
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// `process_tag` will require closing tag.
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if cfg.minify_css {
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let result = Minifier::default()
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.minify(unsafe { from_utf8_unchecked(&proc[src]) }, Level::Three)
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.ok();
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// TODO Collect error as warning.
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if result.as_ref().filter(|r| r.len() < src.len()).is_some() {
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proc.write_slice(result.unwrap().as_bytes());
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} else {
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proc.write_range(src);
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};
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} else {
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proc.write_range(src);
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};
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Ok(())
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}
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