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AK: Add Utf8View::for_each_split_view() method

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Returns one Utf8View at a time, using a callback function to identify
code points to split on.
This commit is contained in:
Sam Atkins 2024-11-15 15:43:59 +00:00 • committed by Andreas Kling
commit 3f10a5701d
Notes: github-actions[bot] 2024-11-15 22:27:09 +00:00
2 changed files with 70 additions and 0 deletions
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23
Tests/AK/TestUtf8.cpp
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@ -312,3 +312,26 @@ TEST_CASE(trim)
EXPECT_EQ(view.trim(whitespace, TrimMode::Right).as_string(), "\u180E");
}
}
static bool is_period(u32 code_point) { return code_point == '.'; }
TEST_CASE(for_each_split_view)
{
Utf8View view { "...Well..hello.friends!..."sv };
auto gather = [&](auto split_behavior) {
Vector<StringView> results;
view.for_each_split_view(is_period, split_behavior, [&](auto part) {
results.append(part.as_string());
});
return results;
};
EXPECT_EQ(gather(SplitBehavior::Nothing),
Vector({ "Well"sv, "hello"sv, "friends!"sv }));
EXPECT_EQ(gather(SplitBehavior::KeepEmpty),
Vector({ ""sv, ""sv, ""sv, "Well"sv, ""sv, "hello"sv, "friends!"sv, ""sv, ""sv, ""sv }));
EXPECT_EQ(gather(SplitBehavior::KeepTrailingSeparator),
Vector({ "Well."sv, "hello."sv, "friends!."sv }));
EXPECT_EQ(gather(SplitBehavior::KeepEmpty | SplitBehavior::KeepTrailingSeparator),
Vector({ "."sv, "."sv, "."sv, "Well."sv, "."sv, "hello."sv, "friends!."sv, "."sv, "."sv, ""sv }));
}