void populateSettings(const QByteArray &xSettings)
{
if (xSettings.length() < 12)
return;
// we ignore byteorder for now
char byteOrder = xSettings.at(1);
Q_UNUSED(byteOrder);
uint serial = *reinterpret_cast<const uint *>(xSettings.mid(4,4).constData());
serial = serial;
uint number_of_settings = *reinterpret_cast<const uint *>(xSettings.mid(8,4).constData());
const char *data = xSettings.constData() + 12;
size_t offset = 0;
for (uint i = 0; i < number_of_settings; i++) {
int local_offset = 0;
XSettingsType type = static_cast<XSettingsType>(*reinterpret_cast<const quint8 *>(data + offset));
local_offset += 2;
quint16 name_len = *reinterpret_cast<const quint16 *>(data + offset + local_offset);
local_offset += 2;
QByteArray name(data + offset + local_offset, name_len);
local_offset += round_to_nearest_multiple_of_4(name_len);
int last_change_serial = *reinterpret_cast<const int *>(data + offset + local_offset);
Q_UNUSED(last_change_serial);
local_offset += 4;
QVariant value;
if (type == XSettingsTypeString) {
int value_length = *reinterpret_cast<const int *>(data + offset + local_offset);
local_offset+=4;
QByteArray value_string(data + offset + local_offset, value_length);
value.setValue(value_string);
local_offset += round_to_nearest_multiple_of_4(value_length);
} else if (type == XSettingsTypeInteger) {
int value_length = *reinterpret_cast<const int *>(data + offset + local_offset);
local_offset += 4;
value.setValue(value_length);
} else if (type == XSettingsTypeColor) {
quint16 red = *reinterpret_cast<const quint16 *>(data + offset + local_offset);
local_offset += 2;
quint16 green = *reinterpret_cast<const quint16 *>(data + offset + local_offset);
local_offset += 2;
quint16 blue = *reinterpret_cast<const quint16 *>(data + offset + local_offset);
local_offset += 2;
quint16 alpha= *reinterpret_cast<const quint16 *>(data + offset + local_offset);
local_offset += 2;
QColor color_value(red,green,blue,alpha);
value.setValue(color_value);
}
offset += local_offset;
settings[name].updateValue(screen,name,value,last_change_serial);
}
}
void populateSettings(const QByteArray &xSettings)
{
if (xSettings.length() < 12)
return;
char byteOrder = xSettings.at(0);
if (byteOrder != LSBFirst && byteOrder != MSBFirst) {
qWarning("%s ByteOrder byte %d not 0 or 1", Q_FUNC_INFO , byteOrder);
return;
}
#define ADJUST_BO(b, t, x) \
((b == LSBFirst) ? \
qFromLittleEndian<t>((const uchar *)(x)) : \
qFromBigEndian<t>((const uchar *)(x)))
#define VALIDATE_LENGTH(x) \
if ((size_t)xSettings.length() < (offset + local_offset + 12 + x)) { \
qWarning("%s Length %d runs past end of data", Q_FUNC_INFO , x); \
return; \
}
uint number_of_settings = ADJUST_BO(byteOrder, quint32, xSettings.mid(8,4).constData());
const char *data = xSettings.constData() + 12;
size_t offset = 0;
for (uint i = 0; i < number_of_settings; i++) {
int local_offset = 0;
VALIDATE_LENGTH(2);
XSettingsType type = static_cast<XSettingsType>(*reinterpret_cast<const quint8 *>(data + offset));
local_offset += 2;
VALIDATE_LENGTH(2);
quint16 name_len = ADJUST_BO(byteOrder, quint16, data + offset + local_offset);
local_offset += 2;
VALIDATE_LENGTH(name_len);
QByteArray name(data + offset + local_offset, name_len);
local_offset += round_to_nearest_multiple_of_4(name_len);
VALIDATE_LENGTH(4);
int last_change_serial = ADJUST_BO(byteOrder, qint32, data + offset + local_offset);
Q_UNUSED(last_change_serial);
local_offset += 4;
QVariant value;
if (type == XSettingsTypeString) {
VALIDATE_LENGTH(4);
int value_length = ADJUST_BO(byteOrder, qint32, data + offset + local_offset);
local_offset+=4;
VALIDATE_LENGTH(value_length);
QByteArray value_string(data + offset + local_offset, value_length);
value.setValue(value_string);
local_offset += round_to_nearest_multiple_of_4(value_length);
} else if (type == XSettingsTypeInteger) {
VALIDATE_LENGTH(4);
int value_length = ADJUST_BO(byteOrder, qint32, data + offset + local_offset);
local_offset += 4;
value.setValue(value_length);
} else if (type == XSettingsTypeColor) {
VALIDATE_LENGTH(2*4);
quint16 red = ADJUST_BO(byteOrder, quint16, data + offset + local_offset);
local_offset += 2;
quint16 green = ADJUST_BO(byteOrder, quint16, data + offset + local_offset);
local_offset += 2;
quint16 blue = ADJUST_BO(byteOrder, quint16, data + offset + local_offset);
local_offset += 2;
quint16 alpha= ADJUST_BO(byteOrder, quint16, data + offset + local_offset);
local_offset += 2;
QColor color_value(red,green,blue,alpha);
value.setValue(color_value);
}
offset += local_offset;
settings[name].updateValue(screen,name,value,last_change_serial);
}
}
