Method validate

src/qt/bitcoinaddressvalidator.cpp:23–81

}

QValidator::State BitcoinAddressEntryValidator::validate(QString &input, int &pos) const
{
    Q_UNUSED(pos);

    // Empty address is "intermediate" input
    if (input.isEmpty())
        return QValidator::Intermediate;

    // Correction
    for (int idx = 0; idx < input.size();)
    {
        bool removeChar = false;
        QChar ch = input.at(idx);
        // Corrections made are very conservative on purpose, to avoid
        // users unexpectedly getting away with typos that would normally
        // be detected, and thus sending to the wrong address.
        switch(ch.unicode())
        {
        // Qt categorizes these as "Other_Format" not "Separator_Space"
        case 0x200B: // ZERO WIDTH SPACE
        case 0xFEFF: // ZERO WIDTH NO-BREAK SPACE
            removeChar = true;
            break;
        default:
            break;
        }

        // Remove whitespace
        if (ch.isSpace())
            removeChar = true;

        // To next character
        if (removeChar)
            input.remove(idx, 1);
        else
            ++idx;
    }

    // Validation
    QValidator::State state = QValidator::Acceptable;
    for (int idx = 0; idx < input.size(); ++idx)
    {
        int ch = input.at(idx).unicode();

        if (((ch >= '0' && ch<='9') ||
            (ch >= 'a' && ch<='z') ||
            (ch >= 'A' && ch<='Z')) &&
            ch != 'I' && ch != 'O') // Characters invalid in both Base58 and Bech32
        {
            // Alphanumeric and not a 'forbidden' character
        }
        else
        {
            state = QValidator::Invalid;
        }
    }

    return state;