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AK: Add a method to find the byte offset of a code point

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Timothy Flynn 2023-01-22 09:24:12 -05:00 • committed by Tim Flynn
parent 5e44b93af2
commit d50724956e
3 changed files with 58 additions and 0 deletions
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14
AK/String.cpp
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@ -275,6 +275,20 @@ ErrorOr<Vector<String>> String::split_limit(u32 separator, size_t limit, SplitBe
return result;
}
Optional<size_t> String::find_byte_offset(u32 code_point, size_t from_byte_offset) const
{
auto code_points = this->code_points();
if (from_byte_offset >= code_points.byte_length())
return {};
for (auto it = code_points.iterator_at_byte_offset(from_byte_offset); it != code_points.end(); ++it) {
if (*it == code_point)
return code_points.byte_offset_of(it);
}
return {};
}
bool String::operator==(String const& other) const
{
if (is_short_string())