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Code Issues Projects Releases Packages Wiki Activity Actions 9

AK: Define some UTF-16 helper methods

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* contains
* escape_html_entities
* replace
* to_ascii_lowercase
* to_ascii_uppercase
* to_ascii_titlecase
* trim
* trim_whitespace
This commit is contained in:
Timothy Flynn 2025-06-27 12:30:25 -04:00 • committed by Tim Flynn
commit 6e0290ecaa
Notes: github-actions[bot] 2025-07-18 16:47:12 +00:00
6 changed files with 345 additions and 1 deletions
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129
Tests/AK/TestUtf16View.cpp
View file

@ -10,6 +10,7 @@
#include <AK/String.h>
#include <AK/StringView.h>
#include <AK/Types.h>
#include <AK/Utf16String.h>
#include <AK/Utf16View.h>
TEST_CASE(decode_ascii)
@ -340,6 +341,34 @@ TEST_CASE(is_ascii)
EXPECT(!u"The quick (“brown”) fox can’t jump 32.3 feet, right?"sv.is_ascii());
}
TEST_CASE(to_ascii_lowercase)
{
EXPECT_EQ(u""sv.to_ascii_lowercase(), u""sv);
EXPECT_EQ(u"foobar"sv.to_ascii_lowercase(), u"foobar"sv);
EXPECT_EQ(u"FooBar"sv.to_ascii_lowercase(), u"foobar"sv);
EXPECT_EQ(u"FOOBAR"sv.to_ascii_lowercase(), u"foobar"sv);
EXPECT_EQ(u"FOO 😀 BAR"sv.to_ascii_lowercase(), u"foo 😀 bar"sv);
}
TEST_CASE(to_ascii_uppercase)
{
EXPECT_EQ(u""sv.to_ascii_uppercase(), u""sv);
EXPECT_EQ(u"foobar"sv.to_ascii_uppercase(), u"FOOBAR"sv);
EXPECT_EQ(u"FooBar"sv.to_ascii_uppercase(), u"FOOBAR"sv);
EXPECT_EQ(u"FOOBAR"sv.to_ascii_uppercase(), u"FOOBAR"sv);
EXPECT_EQ(u"foo 😀 bar"sv.to_ascii_uppercase(), u"FOO 😀 BAR"sv);
}
TEST_CASE(to_ascii_titlecase)
{
EXPECT_EQ(u""sv.to_ascii_titlecase(), u""sv);
EXPECT_EQ(u"foobar"sv.to_ascii_titlecase(), u"Foobar"sv);
EXPECT_EQ(u"FooBar"sv.to_ascii_titlecase(), u"Foobar"sv);
EXPECT_EQ(u"foo bar"sv.to_ascii_titlecase(), u"Foo Bar"sv);
EXPECT_EQ(u"FOO BAR"sv.to_ascii_titlecase(), u"Foo Bar"sv);
EXPECT_EQ(u"foo 😀 bar"sv.to_ascii_titlecase(), u"Foo 😀 Bar"sv);
}
TEST_CASE(equals_ignoring_case)
{
auto string1 = MUST(AK::utf8_to_utf16("foobar"sv));
@ -355,6 +384,45 @@ TEST_CASE(equals_ignoring_case)
EXPECT(!Utf16View { string1 }.equals_ignoring_case(Utf16View { string2 }));
}
TEST_CASE(replace)
{
auto result = u""sv.replace({}, {}, ReplaceMode::FirstOnly);
EXPECT_EQ(result, u""sv);
result = u""sv.replace(u"foo"sv, u"bar"sv, ReplaceMode::FirstOnly);
EXPECT_EQ(result, u""sv);
result = u"foo"sv.replace(u"bar"sv, u"baz"sv, ReplaceMode::FirstOnly);
EXPECT_EQ(result, u"foo"sv);
result = u"foo"sv.replace(u"foo"sv, u"bar"sv, ReplaceMode::FirstOnly);
EXPECT_EQ(result, u"bar"sv);
result = u"foo"sv.replace(u"o"sv, u"e"sv, ReplaceMode::FirstOnly);
EXPECT_EQ(result, u"feo"sv);
result = u"foo"sv.replace(u"o"sv, u"e"sv, ReplaceMode::All);
EXPECT_EQ(result, u"fee"sv);
result = u"foo boo"sv.replace(u"o"sv, u"e"sv, ReplaceMode::FirstOnly);
EXPECT_EQ(result, u"feo boo"sv);
result = u"foo boo"sv.replace(u"o"sv, u"e"sv, ReplaceMode::All);
EXPECT_EQ(result, u"fee bee"sv);
result = u"foo 😀 boo 😀"sv.replace(u"o"sv, u"e"sv, ReplaceMode::All);
EXPECT_EQ(result, u"fee 😀 bee 😀"sv);
result = u"foo 😀 boo 😀"sv.replace(u"😀"sv, u"🙃"sv, ReplaceMode::FirstOnly);
EXPECT_EQ(result, u"foo 🙃 boo 😀"sv);
result = u"foo 😀 boo 😀"sv.replace(u"😀"sv, u"🙃"sv, ReplaceMode::All);
EXPECT_EQ(result, u"foo 🙃 boo 🙃"sv);
result = u"foo 😀 boo 😀"sv.replace(u"😀 "sv, u"🙃 "sv, ReplaceMode::All);
EXPECT_EQ(result, u"foo 🙃 boo 😀"sv);
}
TEST_CASE(substring_view)
{
auto string = MUST(AK::utf8_to_utf16("Привет 😀"sv));
@ -375,6 +443,67 @@ TEST_CASE(substring_view)
}
}
TEST_CASE(trim)
{
Utf16View whitespace { u" "sv };
{
Utf16View view { u"word"sv };
EXPECT_EQ(view.trim(whitespace, TrimMode::Both), u"word"sv);
EXPECT_EQ(view.trim(whitespace, TrimMode::Left), u"word"sv);
EXPECT_EQ(view.trim(whitespace, TrimMode::Right), u"word"sv);
}
{
Utf16View view { u" word"sv };
EXPECT_EQ(view.trim(whitespace, TrimMode::Both), u"word"sv);
EXPECT_EQ(view.trim(whitespace, TrimMode::Left), u"word"sv);
EXPECT_EQ(view.trim(whitespace, TrimMode::Right), u" word"sv);
}
{
Utf16View view { u"word "sv };
EXPECT_EQ(view.trim(whitespace, TrimMode::Both), u"word"sv);
EXPECT_EQ(view.trim(whitespace, TrimMode::Left), u"word "sv);
EXPECT_EQ(view.trim(whitespace, TrimMode::Right), u"word"sv);
}
{
Utf16View view { u" word "sv };
EXPECT_EQ(view.trim(whitespace, TrimMode::Both), u"word"sv);
EXPECT_EQ(view.trim(whitespace, TrimMode::Left), u"word "sv);
EXPECT_EQ(view.trim(whitespace, TrimMode::Right), u" word"sv);
}
{
Utf16View view { u" \u180E "sv };
EXPECT_EQ(view.trim(whitespace, TrimMode::Both), u"\u180E"sv);
EXPECT_EQ(view.trim(whitespace, TrimMode::Left), u"\u180E "sv);
EXPECT_EQ(view.trim(whitespace, TrimMode::Right), u" \u180E"sv);
}
{
Utf16View view { u"😀wfh😀"sv };
EXPECT_EQ(view.trim(u"😀"sv, TrimMode::Both), u"wfh"sv);
EXPECT_EQ(view.trim(u"😀"sv, TrimMode::Left), u"wfh😀"sv);
EXPECT_EQ(view.trim(u"😀"sv, TrimMode::Right), u"😀wfh"sv);
}
}
TEST_CASE(contains)
{
EXPECT(!u""sv.contains(u'a'));
EXPECT(u"a"sv.contains(u'a'));
EXPECT(!u"b"sv.contains(u'a'));
EXPECT(u"ab"sv.contains(u'a'));
EXPECT(u"😀"sv.contains(u'\xd83d'));
EXPECT(u"😀"sv.contains(u'\xde00'));
EXPECT(u""sv.contains(u""sv));
EXPECT(!u""sv.contains(u"a"sv));
EXPECT(u"a"sv.contains(u"a"sv));
EXPECT(!u"b"sv.contains(u"a"sv));
EXPECT(u"ab"sv.contains(u"a"sv));
EXPECT(u"😀"sv.contains(u"\xd83d"sv));
EXPECT(u"😀"sv.contains(u"\xde00"sv));
EXPECT(u"😀"sv.contains(u"😀"sv));
EXPECT(u"ab😀"sv.contains(u"😀"sv));
}
TEST_CASE(starts_with)
{
EXPECT(Utf16View {}.starts_with(u""sv));