std::string BaseLink::CreateStringPath(Base* dest, Base* from)
{
if (!dest || dest == from) return std::string("[]");
BaseObject* o = dest->toBaseObject();
BaseObject* f = from->toBaseObject();
BaseContext* ctx = from->toBaseContext();
if (!ctx && f) ctx = f->getContext();
if (o)
{
std::string objectPath = o->getName();
BaseObject* master = o->getMaster();
while (master)
{
objectPath = master->getName() + std::string("/") + objectPath;
master = master->getMaster();
}
BaseNode* n = o->getContext()->toBaseNode();
if (f && o->getContext() == ctx)
return objectPath;
else if (n)
return n->getPathName() + std::string("/") + objectPath; // TODO: compute relative path
else
return objectPath; // we could not determine destination path, specifying simply its name might be enough to find it back
}
else // dest is a context
{
if (f && ctx == dest)
return std::string("./");
BaseNode* n = dest->toBaseNode();
if (n) return n->getPathName(); // TODO: compute relative path
else return dest->getName(); // we could not determine destination path, specifying simply its name might be enough to find it back
}
}
void* Node::findLinkDestClass(const core::objectmodel::BaseClass* destType, const std::string& path, const core::objectmodel::BaseLink* link)
{
std::string pathStr;
if (link)
{
if (!link->parseString(path,&pathStr))
return NULL;
}
else
{
if (!BaseLink::ParseString(path,&pathStr,NULL,this))
return NULL;
}
#ifdef DEBUG_LINK
std::cout << "LINK: Looking for " << destType->className << "<" << destType->templateName << "> " << pathStr << " from Node " << getName() << std::endl;
#endif
std::size_t ppos = 0;
std::size_t psize = pathStr.size();
if (ppos == psize || (ppos == psize-2 && pathStr[ppos] == '[' && pathStr[ppos+1] == ']')) // self-reference
{
#ifdef DEBUG_LINK
std::cout << " self-reference link." << std::endl;
#endif
if (!link || !link->getOwnerBase()) return destType->dynamicCast(this);
return destType->dynamicCast(link->getOwnerBase());
}
Node* node = this;
BaseObject* master = NULL;
bool based = false;
if (ppos < psize && pathStr[ppos] == '[') // relative index in the list of objects
{
if (pathStr[psize-1] != ']')
{
serr << "Invalid index-based path \"" << path << "\"" << sendl;
return NULL;
}
int index = atoi(pathStr.c_str()+ppos+1);
#ifdef DEBUG_LINK
std::cout << " index-based path to " << index << std::endl;
#endif
ObjectReverseIterator it = object.rbegin();
ObjectReverseIterator itend = object.rend();
if (link && link->getOwnerBase())
{
// index from last
Base* b = link->getOwnerBase();
while (it != itend && *it != b)
++it;
}
while (it != itend && index < 0)
{
++it;
++index;
}
if (it == itend)
return NULL;
#ifdef DEBUG_LINK
std::cout << " found " << it->get()->getTypeName() << " " << it->get()->getName() << "." << std::endl;
#endif
return destType->dynamicCast(it->get());
}
else if (ppos < psize && pathStr[ppos] == '/') // absolute path
{
#ifdef DEBUG_LINK
std::cout << " absolute path" << std::endl;
#endif
node = dynamic_cast<Node*>(this->getRoot());
if (!node) return NULL;
++ppos;
based = true;
}
while(ppos < psize)
{
if ((ppos+1 < psize && pathStr.substr(ppos,2) == "./")
|| pathStr.substr(ppos) == ".")
{
// this must be this node
#ifdef DEBUG_LINK
std::cout << " to current node" << std::endl;
#endif
ppos += 2;
based = true;
}
else if ((ppos+2 < psize && pathStr.substr(ppos,3) == "../") // relative
|| pathStr.substr(ppos) == "..")
{
ppos += 3;
if (master)
{
master = master->getMaster();
#ifdef DEBUG_LINK
std::cout << " to master object " << master->getName() << std::endl;
#endif
}
else
{
Parents parents = node->getParents();
if (parents.empty()) return NULL;
node = dynamic_cast<Node*>(parents[0]); // TODO: explore other parents
if (!node) return NULL;
#ifdef DEBUG_LINK
std::cout << " to parent node " << node->getName() << std::endl;
#endif
}
based = true;
}
else if (pathStr[ppos] == '/')
{
// extra /
#ifdef DEBUG_LINK
std::cout << " extra '/'" << std::endl;
#endif
ppos += 1;
}
else
{
std::size_t p2pos = pathStr.find('/',ppos);
if (p2pos == std::string::npos) p2pos = psize;
std::string name = pathStr.substr(ppos,p2pos-ppos);
ppos = p2pos+1;
if (master)
{
#ifdef DEBUG_LINK
std::cout << " to slave object " << name << std::endl;
#endif
master = master->getSlave(name);
if (!master) return NULL;
}
else
{
for (;;)
{
BaseObject* obj = node->getObject(name);
Node* child = node->getChild(name);
if (child)
{
node = child;
#ifdef DEBUG_LINK
std::cout << " to child node " << name << std::endl;
#endif
break;
}
else if (obj)
{
master = obj;
#ifdef DEBUG_LINK
std::cout << " to object " << name << std::endl;
#endif
break;
}
if (based) return NULL;
// this can still be found from an ancestor node
Parents parents = node->getParents();
if (parents.empty()) return NULL;
node = dynamic_cast<Node*>(parents[0]); // TODO: explore other parents
if (!node) return NULL;
#ifdef DEBUG_LINK
std::cout << " looking in ancestor node " << node->getName() << std::endl;
#endif
}
}
based = true;
}
}
if (master)
{
#ifdef DEBUG_LINK
std::cout << " found " << master->getTypeName() << " " << master->getName() << "." << std::endl;
#endif
return destType->dynamicCast(master);
}
else
{
void* r = destType->dynamicCast(node);
if (r)
{
#ifdef DEBUG_LINK
std::cout << " found node " << node->getName() << "." << std::endl;
#endif
return r;
}
for (ObjectIterator it = node->object.begin(), itend = node->object.end(); it != itend; ++it)
{
BaseObject* obj = it->get();
void *o = destType->dynamicCast(obj);
if (!o) continue;
#ifdef DEBUG_LINK
std::cout << " found " << obj->getTypeName() << " " << obj->getName() << "." << std::endl;
#endif
if (!r) r = o;
else return NULL; // several objects are possible, this is an ambiguous path
}
if (r) return r;
// no object found, we look in parent nodes if the searched class is one of the known standard single components (state, topology, ...)
if (destType->hasParent(sofa::core::BaseState::GetClass()))
return destType->dynamicCast(node->getState());
else if (destType->hasParent(core::topology::BaseMeshTopology::GetClass()))
return destType->dynamicCast(node->getMeshTopology());
else if (destType->hasParent(core::topology::Topology::GetClass()))
return destType->dynamicCast(node->getTopology());
else if (destType->hasParent(core::visual::Shader::GetClass()))
return destType->dynamicCast(node->getShader());
else if (destType->hasParent(core::behavior::BaseAnimationLoop::GetClass()))
return destType->dynamicCast(node->getAnimationLoop());
else if (destType->hasParent(core::behavior::OdeSolver::GetClass()))
return destType->dynamicCast(node->getOdeSolver());
else if (destType->hasParent(core::collision::Pipeline::GetClass()))
return destType->dynamicCast(node->getCollisionPipeline());
else if (destType->hasParent(core::visual::VisualLoop::GetClass()))
return destType->dynamicCast(node->getVisualLoop());
return NULL;
}
}
