qgb18030codec.cpp

qt-x11-opensource-src-4.1.4.tar.gz源码

            if (ch < 0x80) {
                // ASCII
                result += QLatin1Char(ch);
            } else if (IsByteInGb2312(ch)) {
                // GB2312 1st byte?
                buf[0] = ch;
                nbuf = 1;
            } else {
                // Invalid
                result += replacement;
                ++invalid;
            }
            break;
        case 1:
            // GB2312 2nd byte
            if (IsByteInGb2312(ch)) {
                buf[1] = ch;
                int clen = 2;
                uint u = qt_Gb18030ToUnicode(buf, clen);
                if (clen == 2) {
                    result += QValidChar(u);
                } else {
                    result += replacement;
                    ++invalid;
                }
                nbuf = 0;
            } else {
                // Error
                result += replacement;
                ++invalid;
                nbuf = 0;
            }
            break;
        }
    }

    if (state) {
        state->remainingChars = nbuf;
        state->state_data[0] = buf[0];
        state->state_data[1] = buf[1];
        state->invalidChars += invalid;
    }
    return result;
}


QByteArray QGb2312Codec::convertFromUnicode(const QChar *uc, int len, ConverterState *state) const
{
    char replacement = '?';
    if (state) {
        if (state->flags & ConvertInvalidToNull)
            replacement = 0;
    }
    int invalid = 0;

    int rlen = 2*len + 1;
    QByteArray rstr;
    rstr.resize(rlen);
    uchar* cursor = (uchar*)rstr.data();

    //qDebug("QGb2312Codec::fromUnicode(const QString& uc, int& lenInOut = %d) const", lenInOut);
    for (int i = 0; i < len; i++) {
        QChar ch = uc[i];
        uchar buf[2];

        if (ch.row() == 0x00 && ch.cell() < 0x80) {
            // ASCII
            *cursor++ = ch.cell();
        } else if ((qt_UnicodeToGbk(ch.unicode(), buf) == 2) &&
                    (buf[0] >= 0xA1) && (buf[1] >= 0xA1)) {
            *cursor++ = buf[0];
            *cursor++ = buf[1];
        } else {
            // Error
            *cursor++ = replacement;
            ++invalid;
        }
    }
    rstr.resize(cursor - (uchar*)rstr.constData());

    if (state) {
        state->invalidChars += invalid;
    }
    return rstr;
}


#ifdef Q_WS_X11

QFontGb2312Codec::QFontGb2312Codec()
{
}


QByteArray QFontGb2312Codec::_name()
{
    return "gb2312.1980-0";
}


int QFontGb2312Codec::_mibEnum()
{
    return 57;
}


QString QFontGb2312Codec::convertToUnicode(const char* /*chars*/, int /*len*/, ConverterState *) const
{
    return QString();
}

QByteArray QFontGb2312Codec::convertFromUnicode(const QChar *uc, int len, ConverterState *) const
{
    QByteArray result;
    result.resize(len * 2);
    uchar *rdata = (uchar *) result.data();
    const QChar *ucp = uc;

    //qDebug("QFontGb2312Codec::fromUnicode(const QString& uc, int& lenInOut = %d)", lenInOut);
    uchar buf[8];
    for (int i = 0; i < len; i++) {
        QChar ch(*ucp++);

        int len = qt_UnicodeToGbk(ch.unicode(), buf);

        if (len == 2 && buf[0] > 0xa0 && buf[1] > 0xa0) {
            *rdata++ = buf[0] & 0x7f;
            *rdata++ = buf[1] & 0x7f;
        } else {
            *rdata++ = 0;
            *rdata++ = 0;
        }
    }
    return result;
}


QFontGbkCodec::QFontGbkCodec()
{
}


QByteArray QFontGbkCodec::_name()
{
    return "gbk-0";
}


int QFontGbkCodec::_mibEnum()
{
    return -113;
}


QString QFontGbkCodec::convertToUnicode(const char* /*chars*/, int /*len*/, ConverterState *) const
{
    return QString();
}

QByteArray QFontGbkCodec::convertFromUnicode(const QChar *uc, int len, ConverterState *) const
{
    QByteArray result;
    result.resize(len * 2);
    uchar *rdata = (uchar *) result.data();
    const QChar *ucp = uc;

    //qDebug("QFontGbkCodec::fromUnicode(const QString& uc, int& lenInOut = %d)", lenInOut);
    for (int i = 0; i < len; i++) {
        QChar ch(*ucp++);
        uchar buf[8];

        int len = qt_UnicodeToGbk(ch.unicode(), buf);

        if (len == 2) {
            *rdata++ = buf[0];
            *rdata++ = buf[1];
        } else {
            *rdata++ = 0;
            *rdata++ = 0;
        }
    }
    return result;
}


QFontGb18030_0Codec::QFontGb18030_0Codec()
{
    //qDebug("QFontGb18030_0Codec::QFontGb18030_0Codec()");
}


QByteArray QFontGb18030_0Codec::_name()
{
    //qDebug("QFontGb18030_0Codec::name() = \"gb18030-0\"");
    return "gb18030-0";
}


int QFontGb18030_0Codec::_mibEnum()
{
    //qDebug("QFontGb18030_0Codec::mibEnum() = -114");
    return -114;
}


QString QFontGb18030_0Codec::convertToUnicode(const char* /*chars*/, int /*len*/, ConverterState *) const
{
    return QString();
}

QByteArray QFontGb18030_0Codec::convertFromUnicode(const QChar *uc, int len, ConverterState *) const
{
    QByteArray result;
    result.resize(len * 2);
    uchar *rdata = (uchar *) result.data();
    const QChar *ucp = uc;

    //qDebug("QFontGb18030_0Codec::fromUnicode(const QString& uc, int& lenInOut = %d)", lenInOut);
    for (int i = 0; i < len; i++) {
        QChar ch(*ucp++);
        if (ch.row () > 0 && !(ch.row () >= 0xd8 && ch.row () < 0xe0)) {