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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 <vector>
#include "file/xml/xmlsurfacereader.h"
#include "file/xml/xmltreeresolver.h"
#include "triangulation/dim3.h"
#include "utilities/stringutils.h"
namespace regina {
void XMLNormalSurfaceReader::startElement(const std::string&,
const regina::xml::XMLPropertyDict& props,
XMLElementReader*) {
if (! valueOf(props.lookup("len"), vecLen_))
vecLen_ = -1;
if (! valueOf(props.lookup("enc"), vecEnc_))
vecEnc_ = 0;
name_ = props.lookup("name");
}
void XMLNormalSurfaceReader::initialChars(const std::string& chars) {
// If this file was created before Regina 7.0, then it will not include
// a vector encoding. For those earlier versions of Regina, the encoding
// is meant to be deduced from the enclosing list's coordinate system.
if (vecLen_ < 0)
return;
std::vector<std::string> tokens = basicTokenise(chars);
if (tokens.size() % 2 != 0)
return;
// Create a new vector and read all non-zero entries.
Vector<LargeInteger> vec(vecLen_);
long pos;
LargeInteger value;
for (size_t i = 0; i < tokens.size(); i += 2) {
if (! valueOf(tokens[i], pos))
return;
if (pos < 0 || pos >= vecLen_)
return;
try {
vec[pos] = tokens[i + 1];
} catch (const regina::InvalidArgument&) {
return;
}
}
if (vecEnc_ != 0)
surface_ = NormalSurface(tri_, NormalEncoding::fromIntValue(vecEnc_),
std::move(vec));
else
surface_ = NormalSurface(tri_, coords_, std::move(vec));
if (! name_.empty())
surface_->setName(name_);
}
XMLElementReader* XMLNormalSurfaceReader::startSubElement(
const std::string& subTagName,
const regina::xml::XMLPropertyDict& props) {
if (! surface_)
return new XMLElementReader();
if (subTagName == "euler") {
try {
surface_->eulerChar_ = props.lookup("value");
} catch (const regina::InvalidArgument&) {
}
} else if (subTagName == "orbl") {
bool val;
if (valueOf(props.lookup("value"), val))
surface_->orientable_ = val;
} else if (subTagName == "twosided") {
bool val;
if (valueOf(props.lookup("value"), val))
surface_->twoSided_ = val;
} else if (subTagName == "connected") {
bool val;
if (valueOf(props.lookup("value"), val))
surface_->connected_ = val;
} else if (subTagName == "realbdry") {
bool val;
if (valueOf(props.lookup("value"), val))
surface_->realBoundary_ = val;
} else if (subTagName == "compact") {
bool val;
if (valueOf(props.lookup("value"), val))
surface_->compact_ = val;
}
return new XMLElementReader();
}
XMLNormalSurfacesReader::XMLNormalSurfacesReader(
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)),
list_(nullptr), tri_(resolver_.resolveTri3(props.lookup("tri"))) {
if (! tri_)
return;
// Extract the list parameters from the attributes.
int coords, listType, algorithm;
if (valueOf(props.lookup("coords"), coords) &&
valueOf(props.lookup("type"), listType) &&
valueOf(props.lookup("algorithm"), algorithm)) {
// Parameters look sane; create the empty list.
list_ = make_packet<NormalSurfaces>(std::in_place,
static_cast<NormalCoords>(coords),
Flags<NormalList>::fromInt(listType),
Flags<NormalAlg>::fromInt(algorithm),
*tri_);
}
}
XMLElementReader* XMLNormalSurfacesReader::startContentSubElement(
const std::string& subTagName,
const regina::xml::XMLPropertyDict&) {
if (list_ && subTagName == "surface")
return new XMLNormalSurfaceReader(
list_->triangulation_, list_->coords_);
else
return new XMLElementReader();
}
void XMLNormalSurfacesReader::endContentSubElement(
const std::string& subTagName,
XMLElementReader* subReader) {
if (list_ && subTagName == "surface")
if (auto& s = static_cast<XMLNormalSurfaceReader*>(subReader)->
surface())
list_->surfaces_.push_back(std::move(*s));
}
XMLElementReader* XMLLegacyNormalSurfacesReader::startContentSubElement(
const std::string& subTagName,
const regina::xml::XMLPropertyDict& props) {
if (list_) {
// The surface list has already been created.
if (subTagName == "surface")
return new XMLNormalSurfaceReader(
list_->triangulation_, list_->coords_);
} else {
// The surface list has not yet been created.
if (subTagName == "params") {
long coords;
int listType, algorithm;
bool embedded;
if (valueOf(props.lookup("flavourid"), coords)) {
if (valueOf(props.lookup("type"), listType) &&
valueOf(props.lookup("algorithm"), algorithm)) {
// Parameters look sane; create the empty list.
list_ = make_packet<NormalSurfaces>(std::in_place,
static_cast<NormalCoords>(coords),
Flags<NormalList>::fromInt(listType),
Flags<NormalAlg>::fromInt(algorithm),
tri_);
} else if (valueOf(props.lookup("embedded"), embedded)) {
// Parameters look sane but use the old format.
list_ = make_packet<NormalSurfaces>(std::in_place,
static_cast<NormalCoords>(coords),
NormalList::Legacy | (embedded ?
NormalList::EmbeddedOnly :
NormalList::ImmersedSingular),
NormalAlg::Legacy,
tri_);
}
}
}
}
return new XMLElementReader();
}
void XMLLegacyNormalSurfacesReader::endContentSubElement(
const std::string& subTagName,
XMLElementReader* subReader) {
if (list_ && subTagName == "surface")
if (auto& s = static_cast<XMLNormalSurfaceReader*>(subReader)->
surface())
list_->surfaces_.push_back(std::move(*s));
}
} // namespace regina
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