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Fix escape char #957

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Fix escape char #957

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55b059e
Fixed special charcter escaping
Shriyans406 Apr 21, 2026
6749f3b
Fixed special charcter escaping
Shriyans406 Apr 21, 2026
10e9add
Update special character escaping to preserve HTML tags
Shriyans406 Apr 27, 2026
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44 changes: 41 additions & 3 deletions src/util.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -15,6 +15,10 @@ use syn::{
punctuated::Punctuated, token::PathSep, Lit, LitInt, PathArguments, PathSegment, Type, TypePath,
};

use regex::Regex;
use std::sync::OnceLock;


use anyhow::{anyhow, Result};

pub const BITS_PER_BYTE: u32 = 8;
Expand Down Expand Up @@ -177,13 +181,35 @@ pub fn escape_brackets(s: &str) -> String {
})
}

static TAG_RE: OnceLock<Regex> = OnceLock::new();

/// Escape basic html tags and brackets
pub fn escape_special_chars(s: &str) -> Cow<'_, str> {
if s.contains('[') {
escape_brackets(s).into()
let tag_re= TAG_RE.get_or_init(|| Regex::new(r"<[^>]+>|&[a-zA-Z0-9#]+;").unwrap());

if !s.contains('[') && !s.contains('&') && !s.contains('<') && !s.contains('>') {
return s.into();
}

let mut last_end = 0;
let mut escaped = String::new();

for mat in tag_re.find_iter(s) {
let part = &s[last_end..mat.start()];
escaped.push_str(&part.replace('&', "&amp;").replace('<', "&lt;").replace('>', "&gt;"));
escaped.push_str(mat.as_str());
last_end = mat.end();
}
let remaining = &s[last_end..];

escaped.push_str(&remaining.replace('&', "&amp;").replace('<', "&lt;").replace('>', "&gt;"));

if escaped.contains('[') {
escape_brackets(&escaped).into()
} else {
s.into()
escaped.into()
}

}

pub fn name_of<T: FullName>(maybe_array: &MaybeArray<T>, ignore_group: bool) -> String {
Expand Down Expand Up @@ -513,3 +539,15 @@ fn pascalcase() {
assert_eq!(to_pascal_case("FOO_BAR_1_2"), "FooBar1_2");
assert_eq!(to_pascal_case("FOO_BAR_1_2_"), "FooBar1_2_");
}

#[test]
fn test_escape_special_chars() {

assert_eq!(escape_special_chars("Enable & disable"), "Enable &amp; disable");
assert_eq!(escape_special_chars("Wait < 10"), "Wait &lt; 10");
assert_eq!(escape_special_chars("This is <b>bold</b>"), "This is <b>bold</b>");
assert_eq!(escape_special_chars("Use <div class=\"foo\">"), "Use <div class=\"foo\">");
assert_eq!(escape_special_chars("A &amp; B"), "A &amp; B");
assert_eq!(escape_special_chars("Array[0]"), "Array\\[0\\]");
}

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