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LibWeb: Parse @font-face unicode-range descriptor

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Sam Atkins 2022-03-31 16:39:52 +01:00 • committed by Andreas Kling
parent ef7d80ced2
commit dbbd6d3508
4 changed files with 43 additions and 4 deletions
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30
Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
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@ -4384,6 +4384,7 @@ RefPtr<CSSRule> Parser::parse_font_face_rule(TokenStream<ComponentValue>& tokens
Optional<FlyString> font_family;
Vector<FontFace::Source> src;
Vector<UnicodeRange> unicode_range;
for (auto& declaration_or_at_rule : declarations_and_at_rules) {
if (declaration_or_at_rule.is_at_rule()) {
@ -4460,6 +4461,29 @@ RefPtr<CSSRule> Parser::parse_font_face_rule(TokenStream<ComponentValue>& tokens
if (supported_sources.is_empty())
continue;
src = move(supported_sources);
continue;
}
if (declaration.name().equals_ignoring_case("unicode-range"sv)) {
Vector<UnicodeRange> unicode_ranges;
bool unicode_range_invalid = false;
TokenStream all_tokens { declaration.values() };
auto range_token_lists = parse_a_comma_separated_list_of_component_values(all_tokens);
for (auto& range_tokens : range_token_lists) {
TokenStream range_token_stream { range_tokens };
auto maybe_unicode_range = parse_unicode_range(range_token_stream);
if (!maybe_unicode_range.has_value()) {
dbgln_if(CSS_PARSER_DEBUG, "CSSParser: @font-face unicode-range format invalid; discarding.");
unicode_range_invalid = true;
break;
}
unicode_ranges.append(maybe_unicode_range.release_value());
}
if (unicode_range_invalid || unicode_ranges.is_empty())
continue;
unicode_range = move(unicode_ranges);
continue;
}
dbgln_if(CSS_PARSER_DEBUG, "CSSParser: Unrecognized descriptor '{}' in @font-family; discarding.", declaration.name());
@ -4470,7 +4494,11 @@ RefPtr<CSSRule> Parser::parse_font_face_rule(TokenStream<ComponentValue>& tokens
return {};
}
return CSSFontFaceRule::create(FontFace { font_family.release_value(), move(src) });
if (unicode_range.is_empty()) {
unicode_range.empend(0x0u, 0x10FFFFu);
}
return CSSFontFaceRule::create(FontFace { font_family.release_value(), move(src), move(unicode_range) });
}
RefPtr<StyleValue> Parser::parse_list_style_value(Vector<ComponentValue> const& component_values)