minify-html/src/unit/script.rs

61 lines
1.9 KiB
Rust

use aho_corasick::AhoCorasick;
use lazy_static::lazy_static;
use crate::cfg::Cfg;
use crate::err::ProcessingResult;
use crate::proc::MatchAction::*;
use crate::proc::MatchMode::*;
use crate::proc::Processor;
#[cfg(feature = "js-esbuild")]
use {
std::sync::Arc,
esbuild_rs::{TransformOptionsBuilder, TransformOptions},
crate::proc::JsMinSection,
crate::proc::checkpoint::Checkpoint,
};
#[cfg(feature = "js-esbuild")]
lazy_static! {
static ref TRANSFORM_OPTIONS: Arc<TransformOptions> = {
let mut builder = TransformOptionsBuilder::new();
builder.minify_identifiers = true;
builder.minify_syntax = true;
builder.minify_whitespace = true;
builder.build()
};
}
lazy_static! {
static ref SCRIPT_END: AhoCorasick = AhoCorasick::new(&["</script"]);
}
#[inline(always)]
pub fn process_script(proc: &mut Processor, cfg: &Cfg, js: bool) -> ProcessingResult<()> {
#[cfg(feature = "js-esbuild")]
let start = Checkpoint::new(proc);
proc.require_not_at_end()?;
proc.m(WhileNotSeq(&SCRIPT_END), Keep);
// `process_tag` will require closing tag.
#[cfg(feature = "js-esbuild")]
if js && cfg.minify_js {
let (wg, results) = proc.new_script_section();
let src = start.written_range(proc);
unsafe {
esbuild_rs::transform_direct_unmanaged(&proc[src], &TRANSFORM_OPTIONS.clone(), move |result| {
let mut guard = results.lock().unwrap();
guard.push(JsMinSection {
src,
result,
});
// Drop Arc reference and Mutex guard before marking task as complete as it's possible proc::finish
// waiting on WaitGroup will resume before Arc/Mutex is dropped after exiting this function.
drop(guard);
drop(results);
drop(wg);
});
};
};
Ok(())
}