void VersionInfoFactory::ParseOffsets(TiXmlElement * parent, VersionInfo* target, bool initial)
{
// we parse the groups iteratively instead of recursively
// breadcrubs acts like a makeshift stack
// first pair entry stores the current element of that level
// second pair entry the group object from OffsetGroup
typedef triple< TiXmlElement *, OffsetGroup *, INVAL_TYPE> groupTriple;
vector< groupTriple > breadcrumbs;
{
TiXmlElement* pEntry;
// we get the <Offsets>, look at the children
pEntry = parent->FirstChildElement();
if(!pEntry)
return;
const char *cstr_invalid = parent->Attribute("valid");
INVAL_TYPE parent_inval = NOT_SET;
if(cstr_invalid)
{
if(strcmp(cstr_invalid,"false") == 0)
parent_inval = IS_INVALID;
else if(strcmp(cstr_invalid,"true") == 0)
parent_inval = IS_VALID;
}
OffsetGroup * currentGroup = reinterpret_cast<OffsetGroup *> (target);
currentGroup->setInvalid(parent_inval);
breadcrumbs.push_back(groupTriple(pEntry,currentGroup, parent_inval));
}
// work variables
OffsetGroup * currentGroup = 0;
TiXmlElement * currentElem = 0;
INVAL_TYPE parent_inval = NOT_SET;
//cerr << "<Offsets>"<< endl;
while(1)
{
// get current work variables
currentElem = breadcrumbs.back().first;
currentGroup = breadcrumbs.back().second;
parent_inval = breadcrumbs.back().third;
// we reached the end of the current group?
if(!currentElem)
{
// go one level up
breadcrumbs.pop_back();
// exit if no more work
if(breadcrumbs.empty())
{
break;
}
else
{
//cerr << "</group>" << endl;
continue;
}
}
if(!currentGroup)
{
groupTriple & gp = breadcrumbs.back();
gp.first = gp.first->NextSiblingElement();
continue;
}
// skip non-elements
if (currentElem->Type() != TiXmlNode::ELEMENT)
{
groupTriple & gp = breadcrumbs.back();
gp.first = gp.first->NextSiblingElement();
continue;
}
// we have a valid current element and current group
// get properties
string type = currentElem->Value();
std::transform(type.begin(), type.end(), type.begin(), ::tolower);
const char *cstr_name = currentElem->Attribute("name");
if(!cstr_name)
{
// ERROR, missing attribute
}
// evaluate elements
const char *cstr_value = currentElem->Attribute("value");
const char *cstr_invalid = currentElem->Attribute("valid");
INVAL_TYPE child_inval = parent_inval;
if(cstr_invalid)
{
if(strcmp(cstr_invalid,"false") == 0)
child_inval = IS_INVALID;
else if(strcmp(cstr_invalid,"true") == 0)
child_inval = IS_VALID;
}
if(type == "group")
{
// create or get group
OffsetGroup * og;
if(initial)
og = currentGroup->createGroup(cstr_name);
else
og = currentGroup->getGroup(cstr_name);
// advance this level to the next element
groupTriple & gp = breadcrumbs.back();
gp.first = currentElem->NextSiblingElement();
if(!og)
{
string fullname = currentGroup->getFullName() + cstr_name;
throw Error::MissingMemoryDefinition("group", fullname);
}
// add a new level that will be processed in the next step
breadcrumbs.push_back(groupTriple(currentElem->FirstChildElement(), og, child_inval));
og->setInvalid(child_inval);
continue;
}
else if(type == "address")
{
if(child_inval == NOT_SET)
child_inval = IS_VALID;
if(initial)
{
currentGroup->createAddress(cstr_name);
}
else if(cstr_value)
{
currentGroup->setAddress(cstr_name, cstr_value, child_inval);
}
else
{
currentGroup->setAddressValidity(cstr_name, child_inval);
}
}
else if(type == "offset")
{
if(child_inval == NOT_SET)
child_inval = IS_VALID;
if(initial)
{
currentGroup->createOffset(cstr_name);
}
else if(cstr_value)
{
currentGroup->setOffset(cstr_name, cstr_value, child_inval);
}
else
{
currentGroup->setOffsetValidity(cstr_name, child_inval);
}
}
else if(type == "string")
{
if(child_inval == NOT_SET)
child_inval = IS_VALID;
if(initial)
{
currentGroup->createString(cstr_name);
}
else if(cstr_value)
{
currentGroup->setString(cstr_name, cstr_value, child_inval);
}
else
{
currentGroup->setStringValidity(cstr_name, child_inval);
}
}
else if(type == "hexvalue")
{
if(child_inval == NOT_SET)
child_inval = IS_VALID;
if(initial)
{
currentGroup->createHexValue(cstr_name);
}
else if(cstr_value)
{
currentGroup->setHexValue(cstr_name, cstr_value, child_inval);
}
else
{
currentGroup->setHexValueValidity(cstr_name, child_inval);
}
}
// advance to next element
groupTriple & gp = breadcrumbs.back();
gp.first = currentElem->NextSiblingElement();
continue;
}
//cerr << "</Offsets>"<< endl;
}
