Function UnderscoreCaseToCamelCase

library/cpp/yt/string/string.cpp:16–35

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void UnderscoreCaseToCamelCase(TStringBuilderBase* builder, TStringBuf str)
{
    bool first = true;
    bool upper = true;
    for (char c : str) {
        if (c == '_') {
            upper = true;
        } else {
            if (upper) {
                if (!std::isalpha(c) && !first) {
                    builder->AppendChar('_');
                }
                c = std::toupper(c);
            }
            builder->AppendChar(c);
            upper = false;
        }
        first = false;
    }
}

TString UnderscoreCaseToCamelCase(TStringBuf str)
{