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/**************************************************************************
* *
* Regina - A Normal Surface Theory Calculator *
* Computational Engine *
* *
* Copyright (c) 1999-2025, Ben Burton *
* For further details contact Ben Burton (bab@debian.org). *
* *
* This program is free software; you can redistribute it and/or *
* modify it under the terms of the GNU General Public License as *
* published by the Free Software Foundation; either version 2 of the *
* License, or (at your option) any later version. *
* *
* As an exception, when this program is distributed through (i) the *
* App Store by Apple Inc.; (ii) the Mac App Store by Apple Inc.; or *
* (iii) Google Play by Google Inc., then that store may impose any *
* digital rights management, device limits and/or redistribution *
* restrictions that are required by its terms of service. *
* *
* This program is distributed in the hope that it will be useful, but *
* WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
* General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program. If not, see <https://www.gnu.org/licenses/>. *
* *
**************************************************************************/
#include "link/spatiallink.h"
#include "file/xml/xmlspatiallinkreader.h"
#include "utilities/stringutils.h"
#include <sstream>
namespace regina {
XMLSpatialLinkReader::XMLSpatialLinkReader(XMLTreeResolver& res,
std::shared_ptr<Packet> parent, bool anon, std::string label,
std::string id, const regina::xml::XMLPropertyDict& props) :
XMLPacketReader(res, std::move(parent), anon, std::move(label),
std::move(id)),
link_(make_packet<SpatialLink>()) {
double radius;
if (valueOf(props.lookup("radius"), radius))
if (radius > 0)
link_->radius_ = radius;
}
std::shared_ptr<Packet> XMLSpatialLinkReader::packetToCommit() {
return link_;
}
XMLElementReader* XMLSpatialLinkReader::startContentSubElement(
const std::string& subTagName, const regina::xml::XMLPropertyDict&) {
if (! link_)
return new XMLElementReader();
if (subTagName == "component") {
auto& next = link_->components_.emplace_back();
return new XMLSpatialLinkComponentReader(std::addressof(next));
}
return new XMLElementReader();
}
void XMLSpatialLinkReader::endContentSubElement(const std::string& subTagName,
XMLElementReader* reader) {
if (! link_)
return;
if (subTagName == "component") {
if (static_cast<XMLSpatialLinkComponentReader*>(reader)->broken()) {
link_.reset();
return;
}
// Some basic sanity checking: to be embedded, each component must
// have at least three nodes.
if (link_->components_.back().size() < 3) {
link_.reset();
return;
}
}
}
XMLElementReader* XMLSpatialLinkComponentReader::startSubElement(
const std::string& subTagName, const regina::xml::XMLPropertyDict&) {
if (! component_)
return new XMLElementReader();
if (subTagName == "node") {
auto& next = component_->emplace_back();
return new XMLSpatialLinkNodeReader(std::addressof(next));
}
return new XMLElementReader();
}
void XMLSpatialLinkComponentReader::endSubElement(
const std::string& subTagName, XMLElementReader* reader) {
if (! component_)
return;
if (subTagName == "node")
if (static_cast<XMLSpatialLinkNodeReader*>(reader)->broken())
component_ = nullptr;
}
void XMLSpatialLinkNodeReader::initialChars(const std::string& chars) {
if (! node_)
return;
std::istringstream in(chars);
in >> node_->x >> node_->y >> node_->z;
if (! in)
node_ = nullptr;
}
} // namespace regina
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