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LibHTML+IRCClient: Add an escape_html_entities() helper

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This simple helper escapes '<', '>' and '&' so they can be used in HTML
text without interfering with the parser.

Use this in IRCClient to prevent incoming messages from messing with
the DOM :^)
This commit is contained in:
Andreas Kling 2019-11-06 22:37:24 +01:00
parent d17930d9e2
commit a377e8d3f5
Notes: sideshowbarker 2024-07-19 11:20:30 +09:00
3 changed files with 19 additions and 2 deletions
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16
Libraries/LibHTML/Parser/HTMLParser.cpp
View file

@ -339,3 +339,19 @@ RefPtr<Document> parse_html_document(const StringView& html, const URL& url)
return document;
}
String escape_html_entities(const StringView& html)
{
StringBuilder builder;
for (int i = 0; i < html.length(); ++i) {
if (html[i] == '<')
builder.append("&lt;");
else if (html[i] == '>')
builder.append("&gt;");
else if (html[i] == '&')
builder.append("&amp;");
else
builder.append(html[i]);
}
return builder.to_string();
}