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AK+LibUnicode: Provide Unicode-aware String titlecase transformation
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d6ddca0c0f
Notes:
sideshowbarker
2024-07-17 01:36:17 +09:00
Author: https://github.com/trflynn89 Commit: https://github.com/SerenityOS/serenity/commit/d6ddca0c0f Pull-request: https://github.com/SerenityOS/serenity/pull/17048 Reviewed-by: https://github.com/linusg ✅
@ -45,10 +45,10 @@ public:
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// Creates a new String from a sequence of UTF-8 encoded code points.
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static ErrorOr<String> from_utf8(StringView);
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// Creates a new String by transforming this String to lower- or uppercase. Using these methods
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// require linking LibUnicode into your application.
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// Creates a new String by case-transforming this String. Using these methods require linking LibUnicode into your application.
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ErrorOr<String> to_lowercase(Optional<StringView> const& locale = {}) const;
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ErrorOr<String> to_uppercase(Optional<StringView> const& locale = {}) const;
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ErrorOr<String> to_titlecase(Optional<StringView> const& locale = {}) const;
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// Creates a substring with a deep copy of the specified data window.
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ErrorOr<String> substring_from_byte_offset(size_t start, size_t byte_count) const;
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@ -163,6 +163,30 @@ TEST_CASE(to_uppercase)
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}
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}
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TEST_CASE(to_titlecase)
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{
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{
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auto string = MUST(String::from_utf8("foo bar baz"sv));
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auto result = MUST(string.to_titlecase());
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EXPECT_EQ(result, "Foo Bar Baz"sv);
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}
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{
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auto string = MUST(String::from_utf8("foo \n \r bar \t baz"sv));
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auto result = MUST(string.to_titlecase());
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EXPECT_EQ(result, "Foo \n \r Bar \t Baz"sv);
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}
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{
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auto string = MUST(String::from_utf8("f\"oo\" b'ar'"sv));
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auto result = MUST(string.to_titlecase());
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EXPECT_EQ(result, "F\"Oo\" B'Ar'"sv);
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}
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{
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auto string = MUST(String::from_utf8("123dollars"sv));
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auto result = MUST(string.to_titlecase());
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EXPECT_EQ(result, "123Dollars"sv);
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}
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}
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TEST_CASE(is_one_of)
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{
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auto foo = MUST(String::from_utf8("foo"sv));
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@ -26,4 +26,11 @@ ErrorOr<String> String::to_uppercase(Optional<StringView> const& locale) const
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return builder.to_string();
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}
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ErrorOr<String> String::to_titlecase(Optional<StringView> const& locale) const
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{
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StringBuilder builder;
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TRY(Unicode::Detail::build_titlecase_string(code_points(), builder, locale));
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return builder.to_string();
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}
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}
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