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AK: Allow passing an offset to CircularBuffer::next_read_span()
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d12036132e
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sideshowbarker
2024-07-17 01:00:06 +09:00
Author: https://github.com/timschumi Commit: https://github.com/SerenityOS/serenity/commit/d12036132e Pull-request: https://github.com/SerenityOS/serenity/pull/19332 Reviewed-by: https://github.com/linusg ✅
@ -97,9 +97,20 @@ Bytes CircularBuffer::next_write_span()
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return m_buffer.span().slice(m_reading_head + m_used_space, capacity() - (m_reading_head + m_used_space));
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}
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ReadonlyBytes CircularBuffer::next_read_span() const
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ReadonlyBytes CircularBuffer::next_read_span(size_t offset) const
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{
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return m_buffer.span().slice(m_reading_head, min(capacity() - m_reading_head, m_used_space));
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auto reading_head = m_reading_head;
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auto used_space = m_used_space;
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if (offset > 0) {
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if (offset >= used_space)
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return Bytes {};
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reading_head = (reading_head + offset) % capacity();
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used_space -= offset;
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}
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return m_buffer.span().slice(reading_head, min(capacity() - reading_head, used_space));
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}
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ReadonlyBytes CircularBuffer::next_read_span_with_seekback(size_t distance) const
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@ -50,7 +50,7 @@ protected:
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[[nodiscard]] bool is_wrapping_around() const;
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[[nodiscard]] Bytes next_write_span();
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[[nodiscard]] ReadonlyBytes next_read_span() const;
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[[nodiscard]] ReadonlyBytes next_read_span(size_t offset = 0) const;
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[[nodiscard]] ReadonlyBytes next_read_span_with_seekback(size_t distance) const;
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ByteBuffer m_buffer {};
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