Function toUTF8

snap_drawing/src/snap_drawing/cpp/Text/TextLayoutBuilder.cpp:35–49

using TextLineOffsetVector = Valdi::SmallVector<TextLineOffset, 2>;

static std::string toUTF8(const ShapedGlyph* glyphsBegin, const ShapedGlyph* glyphsEnd) {
    std::vector<Character> unicode;
    unicode.resize(glyphsEnd - glyphsBegin);

    auto* unicodePtr = unicode.data();

    const auto* it = glyphsBegin;
    while (it != glyphsEnd) {
        *unicodePtr = it->character();
        it++;
        unicodePtr++;
    }

    return unicodeToUtf8(unicode.data(), unicode.size());
}

template<typename T>
static void forEachSegmentsLine(TextLayoutBuilderSegment* begin, TextLayoutBuilderSegment* end, T&& cb) {