79 lines
2.5 KiB
Rust
79 lines
2.5 KiB
Rust
use std::collections::HashMap;
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use crate::ast::{ElementClosingTag, NodeData};
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use crate::cfg::Cfg;
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use crate::minify::attr::{minify_attr_val, AttrType};
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use crate::minify::content::minify_content;
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use crate::spec::entity::encode::encode_ampersands;
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use crate::spec::tag::ns::Namespace;
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use crate::spec::tag::omission::{can_omit_as_before, can_omit_as_last_node};
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pub fn minify_element(
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cfg: &Cfg,
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out: &mut Vec<u8>,
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descendant_of_pre: bool,
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ns: Namespace,
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// Use an empty slice if none.
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parent: &[u8],
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// Use an empty slice if none.
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previous_sibling_element: &[u8],
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// If the last node of the parent is an element and it's this one.
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is_last_child_text_or_element_node: bool,
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tag_name: &[u8],
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attributes: HashMap<Vec<u8>, Vec<u8>>,
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closing_tag: ElementClosingTag,
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children: Vec<NodeData>,
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) -> () {
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let can_omit_closing_tag = cfg.omit_closing_tags
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&& (can_omit_as_before(previous_sibling_element, tag_name)
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|| (is_last_child_text_or_element_node && can_omit_as_last_node(parent, tag_name)));
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out.push(b'<');
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out.extend_from_slice(tag_name);
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let mut last_attr = AttrType::NoValue;
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let mut attrs_sorted = attributes.into_iter().collect::<Vec<_>>();
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attrs_sorted.sort_unstable_by(|a, b| a.0.cmp(&b.0));
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for (name, value) in attrs_sorted {
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if !cfg.remove_spaces_between_attributes || last_attr != AttrType::Quoted {
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out.push(b' ');
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};
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out.extend_from_slice(&name);
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if value.is_empty() {
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last_attr = AttrType::NoValue;
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} else {
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let min = minify_attr_val(&encode_ampersands(&value, true));
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out.push(b'=');
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min.out(out);
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last_attr = min.typ();
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};
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}
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if closing_tag == ElementClosingTag::SelfClosing {
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if last_attr == AttrType::Unquoted {
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out.push(b' ');
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};
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out.push(b'/');
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};
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out.push(b'>');
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if closing_tag == ElementClosingTag::SelfClosing || closing_tag == ElementClosingTag::Void {
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debug_assert!(children.is_empty());
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return;
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};
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minify_content(
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cfg,
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out,
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descendant_of_pre || (ns == Namespace::Html && tag_name == b"pre"),
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tag_name,
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children,
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);
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if closing_tag != ElementClosingTag::Present || (cfg.omit_closing_tags && can_omit_closing_tag)
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{
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return;
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};
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out.extend_from_slice(b"</");
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out.extend_from_slice(tag_name);
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out.push(b'>');
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}
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