max / makenotwork

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1	/// HTML-escape a string for safe interpolation into element content or attributes.
2	///
3	/// Escapes all five HTML-significant characters: `& < > " '`.
4	pub(crate) fn html_escape(s: &str) -> String {
5	s.replace('&', "&")
6	.replace('<', "<")
7	.replace('>', ">")
8	.replace('"', """)
9	.replace('\'', "'")
10	}
11
12	#[cfg(test)]
13	mod tests {
14	use super::*;
15
16	#[test]
17	fn escapes_all_five_chars() {
18	assert_eq!(
19	html_escape("A & B < C > D \" E ' F"),
20	"A & B < C > D " E ' F"
21	);
22	}
23
24	#[test]
25	fn no_change_for_safe_string() {
26	assert_eq!(html_escape("hello world"), "hello world");
27	}
28
29	#[test]
30	fn empty_string() {
31	assert_eq!(html_escape(""), "");
32	}
33	}
34