titan_html_core/
lib.rs

1mod stylerule;
2use std::hash::{DefaultHasher, Hasher};
3
4pub use stylerule::StyleRule;
5
6use cssparser::{Parser, ParserInput};
7use lightningcss::{
8  declaration::DeclarationBlock, printer::PrinterOptions, properties::Property,
9  stylesheet::ParserOptions,
10};
11
12pub fn parse_css_block(string: &str) -> Vec<(String, Property<'_>)> {
13  let mut parser_input = ParserInput::new(string);
14  let mut parser = Parser::new(&mut parser_input);
15  let parsed_styles =
16    DeclarationBlock::parse(&mut parser, &ParserOptions::default())
17      .expect("Invalid css");
18
19  let mut nice = Vec::default();
20
21  for style in parsed_styles.declarations {
22    let mut hasher = DefaultHasher::default();
23    hasher.write(style.property_id().name().as_bytes());
24    let options = PrinterOptions { minify: true, ..Default::default() };
25    hasher.write(style.value_to_css_string(options).unwrap().as_bytes());
26    let hash = encode_base62(hasher.finish());
27    nice.push((format!("r{hash}"), style));
28  }
29  for style in parsed_styles.important_declarations {
30    let mut hasher = DefaultHasher::default();
31    hasher.write(style.property_id().name().as_bytes());
32    let options = PrinterOptions { minify: true, ..Default::default() };
33    hasher.write(style.value_to_css_string(options).unwrap().as_bytes());
34    let hash = encode_base62(hasher.finish());
35    nice.push((hash, style));
36  }
37
38  nice
39}
40
41const BASE62: &[u8] =
42  b"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
43pub fn encode_base62(mut num: u64) -> String {
44  let mut result = String::new();
45  while num > 0 {
46    let remainder = (num % 62) as usize;
47    result.push(BASE62[remainder] as char);
48    num /= 62;
49  }
50  result.chars().rev().collect()
51}
titan_html_core/lib.rs

titan_html_core/
lib.rs
