82 lines
2.4 KiB
Rust
82 lines
2.4 KiB
Rust
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use std::collections::HashMap;
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use crate::ast::{ElementClosingTag, NodeData, ScriptOrStyleLang};
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use crate::cfg::Cfg;
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use crate::gen::codepoints::TAG_NAME_CHAR;
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use crate::minify::attr::minify_attr_val;
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use crate::minify::bang::minify_bang;
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use crate::minify::comment::minify_comment;
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use crate::minify::content::minify_content;
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use crate::minify::css::minify_css;
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use crate::minify::instruction::minify_instruction;
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use crate::minify::js::minify_js;
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use crate::pattern::Replacer;
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use crate::spec::entity::encode::encode_ampersands;
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use crate::spec::tag::EMPTY_TAG_NAME;
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use crate::spec::tag::omission::{can_omit_as_before, can_omit_as_last_node};
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#[derive(Copy, Clone, Eq, PartialEq)]
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enum AttrType {
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None,
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Quoted,
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Unquoted,
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}
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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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// 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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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: &[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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);
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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::None;
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for (name, value) in attributes {
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if !cfg.remove_spaces_between_attributes || last_attr == AttrType::Unquoted {
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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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out.push(b'=');
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out.extend_from_slice(
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&minify_attr_val(
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&encode_ampersands(value, true),
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),
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);
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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(cfg, out, tag_name, children);
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if closing_tag != ElementClosingTag::Present || (cfg.omit_closing_tags && can_omit_closing_tag) {
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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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