bool QIODeviceProto::isTextModeEnabled() const
{
QIODevice *item = qscriptvalue_cast<QIODevice*>(thisObject());
if (item)
return item->isTextModeEnabled();
return false;
}
/*! Read and parse the header block from the given input device stream.
The stream must be random access, binary and positioned to 0.
\retval true the header was read successfully.
\retval false the header failed to read for some reason.
*/
bool BlockHeader::Read(
QIODevice& fIn //! Input stream (binary, random access).
)
{
ASSERT(fIn.isSequential()==false);
ASSERT(fIn.isReadable()==true);
ASSERT(fIn.isTextModeEnabled()==false);
ASSERT(fIn.pos() == 0);
ASSERT(sizeof(float) == 4);
QDataStream in(&fIn);
// Check the magic number
quint32 uiMagic;
in >> uiMagic;
// OK, try to read the rest of the header.
if(uiMagic == MAGIC_NUMBER) {
in >> m_uiVersion;
in >> m_iJulianDay;
in >> m_fOriginLon;
in >> m_fOriginLat;
in >> m_fArcLon;
in >> m_fArcLat;
in >> m_uiRasterPos;
in >> m_uiVectorPos;
// The next 24 bytes are reserved.
// They should be zero, but we do not read them, just skip them.
// Some additional checks are fast and harmless.
if( m_uiVersion >= 1
&& m_iJulianDay > 2454110 // 9.Jan.2007
&& m_fArcLon >= 1.0f
&& m_fArcLat >= 1.0f
&& fIn.size() >= MBH_HEADER_SIZE
) {
fIn.seek(MBH_HEADER_SIZE); // position the file pointer to the 64-th byte.
return true;
}
}
