Function splitCStringList

src/function/cast_from_string_functions.cpp:302–349

template<typename T>
static bool splitCStringList(const char* input, uint64_t len, T& state, const CSVOption* option) {
    auto end = input + len;
    uint64_t lvl = 1;
    bool seenValue = false;

    // locate [
    skipWhitespace(input, end);
    if (input == end || *input != CopyConstants::DEFAULT_CSV_LIST_BEGIN_CHAR) {
        return false;
    }
    skipWhitespace(++input, end);

    bool justFinishedEntry = true; // true at start
    auto startPtr = input;
    while (input < end) {
        auto ch = *input;
        if (ch == CopyConstants::DEFAULT_CSV_LIST_BEGIN_CHAR) {
            if (!skipToClose(input, end, ++lvl, CopyConstants::DEFAULT_CSV_LIST_END_CHAR, option)) {
                return false;
            }
        } else if ((ch == '\'' || ch == '"') && justFinishedEntry) {
            const char* prevInput = input;
            if (!skipToCloseQuotes(input, end)) {
                input = prevInput;
            }
        } else if (ch == '{') {
            uint64_t struct_lvl = 0;
            skipToClose(input, end, struct_lvl, '}', option);
        } else if (ch == ',' || ch == CopyConstants::DEFAULT_CSV_LIST_END_CHAR) { // split
            if (ch != CopyConstants::DEFAULT_CSV_LIST_END_CHAR || startPtr < input || seenValue) {
                state.handleValue(startPtr, input, option);
                seenValue = true;
            }
            if (ch == CopyConstants::DEFAULT_CSV_LIST_END_CHAR) { // last ]
                lvl--;
                break;
            }
            skipWhitespace(++input, end);
            startPtr = input;
            justFinishedEntry = true;
            continue;
        }
        justFinishedEntry = false;
        input++;
    }
    skipWhitespace(++input, end);
    return (input == end && lvl == 0);
}

template<typename T>
static bool splitPossibleUnbracedList(std::string_view input, T& state, const CSVOption* option) {