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#![doc(html_root_url = "https://docs.rs/topiary/0.0.1")]
#![forbid(unsafe_code)]
#![warn(clippy::pedantic)]
use std::iter::FromIterator;
#[cfg(doctest)]
pub mod readme {
doc_comment::doctest!("../README.md");
}
#[must_use]
pub fn scope_css(input: &str, selector: &str) -> String {
let mut processed = 0usize;
let mut whitespace_start = 0usize;
let mut at_found = false;
let mut result = String::with_capacity(2 * input.len());
let mut i = 0;
for c in input.chars() {
let c_len = String::from_iter(&[c]).len();
match c {
'@' => at_found = true,
w if w.is_whitespace() => (),
'{' | ',' => {
if !at_found {
result = result + &input[processed..whitespace_start] + selector;
processed = whitespace_start;
}
whitespace_start = i + c_len;
at_found = false;
}
'}' => {
whitespace_start = i + c_len;
at_found = false;
}
_ => whitespace_start = i + c_len,
}
i += c_len;
}
result += &input[processed..];
result = result.replace(":scope", &format!(":not({0})>{0}", selector));
result.shrink_to_fit();
result
}