函数名
//int转字节数组
static QByteArray intToByte(int i);
static QByteArray intToByteRec(int i);
//字节数组转int
static int byteToInt(const QByteArray &data);
static int byteToIntRec(const QByteArray &data);
static quint32 byteToUInt(const QByteArray &data);
static quint32 byteToUIntRec(const QByteArray &data);
//ushort转字节数组
static QByteArray ushortToByte(ushort i);
static QByteArray ushortToByteRec(ushort i);
//字节数组转ushort
static int byteToUShort(const QByteArray &data);
static int byteToUShortRec(const QByteArray &data);
函数体
QByteArray QUIHelper::intToByte(int i)
{
QByteArray result;
result.resize(4);
result[3] = (uchar)(0x000000ff & i);
result[2] = (uchar)((0x0000ff00 & i) >> 8);
result[1] = (uchar)((0x00ff0000 & i) >> 16);
result[0] = (uchar)((0xff000000 & i) >> 24);
return result;
}
QByteArray QUIHelper::intToByteRec(int i)
{
QByteArray result;
result.resize(4);
result[0] = (uchar)(0x000000ff & i);
result[1] = (uchar)((0x0000ff00 & i) >> 8);
result[2] = (uchar)((0x00ff0000 & i) >> 16);
result[3] = (uchar)((0xff000000 & i) >> 24);
return result;
}
int QUIHelper::byteToInt(const QByteArray &data)
{
int i = data.at(3) & 0x000000ff;
i |= ((data.at(2) << 8) & 0x0000ff00);
i |= ((data.at(1) << 16) & 0x00ff0000);
i |= ((data.at(0) << 24) & 0xff000000);
return i;
}
int QUIHelper::byteToIntRec(const QByteArray &data)
{
int i = data.at(0) & 0x000000ff;
i |= ((data.at(1) << 8) & 0x0000ff00);
i |= ((data.at(2) << 16) & 0x00ff0000);
i |= ((data.at(3) << 24) & 0xff000000);
return i;
}
quint32 QUIHelper::byteToUInt(const QByteArray &data)
{
quint32 i = data.at(3) & 0x000000ff;
i |= ((data.at(2) << 8) & 0x0000ff00);
i |= ((data.at(1) << 16) & 0x00ff0000);
i |= ((data.at(0) << 24) & 0xff000000);
return i;
}
quint32 QUIHelper::byteToUIntRec(const QByteArray &data)
{
quint32 i = data.at(0) & 0x000000ff;
i |= ((data.at(1) << 8) & 0x0000ff00);
i |= ((data.at(2) << 16) & 0x00ff0000);
i |= ((data.at(3) << 24) & 0xff000000);
return i;
}
QByteArray QUIHelper::ushortToByte(ushort i)
{
QByteArray result;
result.resize(2);
result[1] = (uchar)(0x000000ff & i);
result[0] = (uchar)((0x0000ff00 & i) >> 8);
return result;
}
QByteArray QUIHelper::ushortToByteRec(ushort i)
{
QByteArray result;
result.resize(2);
result[0] = (uchar)(0x000000ff & i);
result[1] = (uchar)((0x0000ff00 & i) >> 8);
return result;
}
int QUIHelper::byteToUShort(const QByteArray &data)
{
int i = data.at(1) & 0x000000FF;
i |= ((data.at(0) << 8) & 0x0000FF00);
if (i >= 32768) {
i = i - 65536;
}
return i;
}
int QUIHelper::byteToUShortRec(const QByteArray &data)
{
int i = data.at(0) & 0x000000FF;
i |= ((data.at(1) << 8) & 0x0000FF00);
if (i >= 32768) {
i = i - 65536;
}
return i;
}