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AK: Add starts_with to Utf8View

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Unlike String/StringView::starts_with this compares utf8 code points
instead of "characters" (bytes), which is important when handling
aribtary utf-8 input that could include overlong characters.
This commit is contained in:
Idan Horowitz 2021-03-21 22:31:15 +02:00 • committed by Andreas Kling
parent 3f9ac88c6e
commit edecf8f6a3
2 changed files with 20 additions and 0 deletions
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AK/Utf8View.h
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@ -80,6 +80,8 @@ public:
Utf8View substring_view(int byte_offset, int byte_length) const;
bool is_empty() const { return m_string.is_empty(); }
bool starts_with(const Utf8View&) const;
size_t iterator_offset(const Utf8CodepointIterator& it) const
{
return byte_offset_of(it);