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#![cfg_attr(not(test), no_std)]
#![doc(html_root_url = "https://docs.rs/maud_htmlescape/0.17.1")]
extern crate alloc;
use alloc::string::String;
use core::fmt;
pub struct Escaper<'a>(&'a mut String);
impl<'a> Escaper<'a> {
pub fn new(buffer: &'a mut String) -> Escaper<'a> {
Escaper(buffer)
}
}
impl<'a> fmt::Write for Escaper<'a> {
fn write_str(&mut self, s: &str) -> fmt::Result {
for b in s.bytes() {
match b {
b'&' => self.0.push_str("&"),
b'<' => self.0.push_str("<"),
b'>' => self.0.push_str(">"),
b'"' => self.0.push_str("""),
_ => unsafe { self.0.as_mut_vec().push(b) },
}
}
Ok(())
}
}
#[cfg(test)]
mod test {
use crate::Escaper;
use std::fmt::Write;
#[test]
fn it_works() {
let mut s = String::new();
write!(Escaper::new(&mut s), "<script>launchMissiles()</script>").unwrap();
assert_eq!(s, "<script>launchMissiles()</script>");
}
}