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LibWeb: Factor out attribute serialization into a separate function

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This commit is contained in:
Andreas Kling 2024-04-09 14:46:21 +02:00 committed by Tim Flynn
parent eefd5edc84
commit 0412e17bac
1 changed files with 30 additions and 29 deletions
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59
Userland/Libraries/LibWeb/HTML/Parser/HTMLParser.cpp
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@ -4244,6 +4244,36 @@ JS::NonnullGCPtr<HTMLParser> HTMLParser::create(DOM::Document& document, StringV
return document.heap().allocate_without_realm<HTMLParser>(document, input, encoding);
}
enum class AttributeMode {
No,
Yes,
};
static String escape_string(StringView string, AttributeMode attribute_mode)
{
// https://html.spec.whatwg.org/multipage/parsing.html#escapingString
StringBuilder builder;
for (auto code_point : Utf8View { string }) {
// 1. Replace any occurrence of the "&" character by the string "&amp;".
if (code_point == '&')
builder.append("&amp;"sv);
// 2. Replace any occurrences of the U+00A0 NO-BREAK SPACE character by the string "&nbsp;".
else if (code_point == 0xA0)
builder.append("&nbsp;"sv);
// 3. If the algorithm was invoked in the attribute mode, replace any occurrences of the """ character by the string "&quot;".
else if (code_point == '"' && attribute_mode == AttributeMode::Yes)
builder.append("&quot;"sv);
// 4. If the algorithm was not invoked in the attribute mode, replace any occurrences of the "<" character by the string "&lt;", and any occurrences of the ">" character by the string "&gt;".
else if (code_point == '<' && attribute_mode == AttributeMode::No)
builder.append("&lt;"sv);
else if (code_point == '>' && attribute_mode == AttributeMode::No)
builder.append("&gt;"sv);
else
builder.append_code_point(code_point);
}
return builder.to_string_without_validation();
}
// https://html.spec.whatwg.org/multipage/parsing.html#html-fragment-serialisation-algorithm
String HTMLParser::serialize_html_fragment(DOM::Node const& node)
{
@ -4265,35 +4295,6 @@ String HTMLParser::serialize_html_fragment(DOM::Node const& node)
actual_node = verify_cast<HTML::HTMLTemplateElement>(element).content();
}
enum class AttributeMode {
No,
Yes,
};
auto escape_string = [](StringView string, AttributeMode attribute_mode) -> String {
// https://html.spec.whatwg.org/multipage/parsing.html#escapingString
StringBuilder builder;
for (auto code_point : Utf8View { string }) {
// 1. Replace any occurrence of the "&" character by the string "&amp;".
if (code_point == '&')
builder.append("&amp;"sv);
// 2. Replace any occurrences of the U+00A0 NO-BREAK SPACE character by the string "&nbsp;".
else if (code_point == 0xA0)
builder.append("&nbsp;"sv);
// 3. If the algorithm was invoked in the attribute mode, replace any occurrences of the """ character by the string "&quot;".
else if (code_point == '"' && attribute_mode == AttributeMode::Yes)
builder.append("&quot;"sv);
// 4. If the algorithm was not invoked in the attribute mode, replace any occurrences of the "<" character by the string "&lt;", and any occurrences of the ">" character by the string "&gt;".
else if (code_point == '<' && attribute_mode == AttributeMode::No)
builder.append("&lt;"sv);
else if (code_point == '>' && attribute_mode == AttributeMode::No)
builder.append("&gt;"sv);
else
builder.append_code_point(code_point);
}
return MUST(builder.to_string());
};
// 2. Let s be a string, and initialize it to the empty string.
StringBuilder builder;