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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 "regina-config.h" // For key-value store macros
#include <algorithm>
#include <cstdlib>
#include <functional>
#include "census/census-impl.h"
#include "file/globaldirs.h"
#include "triangulation/dim3.h"
namespace regina {
CensusDB* Census::closedOr_ = nullptr;
CensusDB* Census::closedNor_ = nullptr;
CensusDB* Census::closedHyp_ = nullptr;
CensusDB* Census::cuspedHypOr_ = nullptr;
CensusDB* Census::cuspedHypNor_ = nullptr;
CensusDB* Census::christy_ = nullptr;
bool Census::dbInit_ = false;
// Instantiate this template, which we use in the python bindings.
template bool CensusDB::lookup<const std::function<void(CensusHit&&)>&>(
const std::string&, const std::function<void(CensusHit&&)>&) const;
std::list<CensusHit> Census::lookup(const Triangulation<3>& tri) {
return lookup(tri.isoSig());
}
std::list<CensusHit> Census::lookup(const std::string& isoSig) {
if (! dbInit_) {
closedOr_ = standardDB("closed-or-census-11." REGINA_DB_EXT,
"Closed census (orientable)");
closedNor_ = standardDB("closed-nor-census-11." REGINA_DB_EXT,
"Closed census (non-orientable)");
closedHyp_ = standardDB("closed-hyp-census-full." REGINA_DB_EXT,
"Hodgson-Weeks closed hyperbolic census");
cuspedHypOr_ = standardDB("cusped-hyp-or-census-9." REGINA_DB_EXT,
"Cusped hyperbolic census (orientable)");
cuspedHypNor_ = standardDB("cusped-hyp-nor-census-9." REGINA_DB_EXT,
"Cusped hyperbolic census (non-orientable)");
christy_ = standardDB("christy-knots-links." REGINA_DB_EXT,
"Christy's collection of knot/link complements");
dbInit_ = true;
}
std::list<CensusHit> hits;
auto push = [&hits](CensusHit hit) {
hits.push_back(std::move(hit));
};
closedOr_->lookup(isoSig, push);
closedNor_->lookup(isoSig, push);
closedHyp_->lookup(isoSig, push);
cuspedHypOr_->lookup(isoSig, push);
cuspedHypNor_->lookup(isoSig, push);
christy_->lookup(isoSig, push);
return hits;
}
CensusDB* Census::standardDB(const char* filename, const char* desc) {
return new CensusDB(GlobalDirs::census() + "/" + filename, desc);
}
} // namespace regina
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