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LibUnicode: Check property list when deciding if a code point is cased
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c45a014645
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sideshowbarker
2024-07-18 07:57:18 +09:00
Author: https://github.com/trflynn89 Commit: https://github.com/SerenityOS/serenity/commit/c45a0146456 Pull-request: https://github.com/SerenityOS/serenity/pull/9054
@ -110,6 +110,14 @@ TEST_CASE(to_unicode_lowercase_special_casing_sigma)
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result = Unicode::to_unicode_lowercase_full("A\u03A3"sv);
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EXPECT_EQ(result, "a\u03C2");
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// Sigma preceded by FEMININE ORDINAL INDICATOR
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result = Unicode::to_unicode_lowercase_full("\u00AA\u03A3"sv);
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EXPECT_EQ(result, "\u00AA\u03C2");
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// Sigma preceded by ROMAN NUMERAL ONE
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result = Unicode::to_unicode_lowercase_full("\u2160\u03A3"sv);
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EXPECT_EQ(result, "\u2170\u03C2");
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// Sigma preceded by A and MONGOLIAN VOWEL SEPARATOR
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result = Unicode::to_unicode_lowercase_full("A\u180E\u03A3"sv);
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EXPECT_EQ(result, "a\u180E\u03C2");
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@ -23,18 +23,30 @@ namespace Unicode {
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#if ENABLE_UNICODE_DATA
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static bool has_property(UnicodeData const& unicode_data, Property property)
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{
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for (u32 i = 0; i < unicode_data.prop_list_size; ++i) {
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if (unicode_data.prop_list[i] == property)
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return true;
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}
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return false;
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}
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static bool is_cased_letter(UnicodeData const& unicode_data)
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{
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// A character C is defined to be cased if and only if C has the Lowercase or Uppercase property
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// or has a General_Category value of Titlecase_Letter.
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switch (unicode_data.general_category) {
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case GeneralCategory::Ll: // FIXME: Should be Ll + Other_Lowercase (PropList.txt).
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case GeneralCategory::Lu: // FIXME: Should be Lu + Other_Uppercase (PropList.txt).
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case GeneralCategory::Ll:
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case GeneralCategory::Lu:
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case GeneralCategory::Lt:
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return true;
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default:
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return false;
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break;
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}
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return has_property(unicode_data, Property::OtherLowercase) || has_property(unicode_data, Property::OtherUppercase);
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}
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static bool is_case_ignorable(UnicodeData const& unicode_data)
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